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WCDMA RAN
ATM Transport Feature Parameter
Description
Issue 01
Date 2013-04-28
HUAWEI TECHNOLOGIES CO., LTD.
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Copyright Huawei Technologies Co., Ltd. 2013. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,
and recommendations in this document are provided "AS IS" without warranties, guarantees or representations
of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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Contents
1 Introduction....................................................................................................................................1
1.1 Scope..............................................................................................................................................................................1
1.2 Intended Audience..........................................................................................................................................................1
1.3 Change History...............................................................................................................................................................1
2 Overview of ATM Transport.......................................................................................................3
3 Protocol Stacks...............................................................................................................................4
3.1 Iub Over ATM................................................................................................................................................................4
3.1.1 ProtocolStack..............................................................................................................................................................4
3.1.2 Links onthe Iub Interface............................................................................................................................................5
3.1.3 OM IPoA Data Configuration on the Iub Interface.....................................................................................................5
3.2 Iu-CS over ATM.............................................................................................................................................................6
3.2.1 ProtocolStack..............................................................................................................................................................6
3.2.2 Links onthe Iu-CS Interface.......................................................................................................................................7
3.2.3 Differences of the Iu-CS Interface Between R99 and R4/R5/R6/R7/R8....................................................................8
3.3 Iu-PS over ATM...........................................................................................................................................................10
3.3.1 ProtocolStack............................................................................................................................................................10
3.3.2 Links onthe Iu-PS Interface......................................................................................................................................11
3.3.3 IPoA Data Configuration on the Iu-PS User Plane...................................................................................................11
3.4 Iur over ATM................................................................................................................................................................13
3.4.1 ProtocolStack............................................................................................................................................................13
3.4.2 Links onthe Iur Interface..........................................................................................................................................13
3.4.3 Configuration Principles for Static Relocation Routes over Iur................................................................................143.5 ATM Transport Modes.................................................................................................................................................15
3.5.1 UNI Mode..................................................................................................................................................................15
3.5.2 Fractional Mode.........................................................................................................................................................17
3.5.3 IMA Mode.................................................................................................................................................................20
3.6 Timeslot Cross Connection..........................................................................................................................................21
3.6.1 Principles of Timeslot Cross Connection..................................................................................................................22
3.6.2 Function of Timeslot Cross Connection....................................................................................................................22
3.7 PVC Parameters of the ATM Layer.............................................................................................................................23
3.7.1 VPI and VCI..............................................................................................................................................................23
3.7.2 Service Type..............................................................................................................................................................23
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3.7.3 ATM Traffic Records................................................................................................................................................25
3.8 AAL5............................................................................................................................................................................27
3.9 AAL2 Path....................................................................................................................................................................27
3.9.1 AAL2 Connections and AAL2 Path..........................................................................................................................28
3.9.2 AAL2 Route..............................................................................................................................................................29
3.10 MTP3..........................................................................................................................................................................29
3.10.1 MTP3 Links.............................................................................................................................................................29
3.10.2 Types of MTP3 DSPs..............................................................................................................................................30
3.10.3 Signaling Route Mask and Signaling Link Mask....................................................................................................31
3.11 IPOA PVC..................................................................................................................................................................31
3.12 F5................................................................................................................................................................................32
4 ATM Transmission Resources..................................................................................................33
5 ATM Transmission Resource Management...........................................................................34
6 Engineering Guidelines.............................................................................................................35
6.1 WRFD-05030104 Dynamic AAL2 Connections in Iub/IuCS/Iur Interface.................................................................35
6.1.1 Requirements.............................................................................................................................................................35
6.1.2 Procedure...................................................................................................................................................................35
6.1.3 MML Command Examples.......................................................................................................................................37
6.2 WRFD-05030105 Permanent AAL5 Connections for Control Plane Traffic..............................................................37
6.2.1 Requirements.............................................................................................................................................................37
6.2.2 Procedure...................................................................................................................................................................37
6.2.3 MML Command Examples.......................................................................................................................................38
6.3 WRFD-05030106 Call Admission Based on Used AAL2 Path Bandwidth................................................................39
6.3.1 Requirements.............................................................................................................................................................39
6.3.2 Procedure...................................................................................................................................................................39
6.3.3 MML Command Examples.......................................................................................................................................40
6.4 WRFD-05030107 CBR, rt-VBR, nrt-VBR, UBR ATM QoS Classes.........................................................................40
6.4.1 Requirements.............................................................................................................................................................40
6.4.2 Procedure...................................................................................................................................................................40
6.4.3 MML Command Examples.......................................................................................................................................41
6.5 WRFD-05030110 F5....................................................................................................................................................416.5.1 Requirements.............................................................................................................................................................41
6.5.2 Procedure...................................................................................................................................................................42
6.5.3 MML Command Examples.......................................................................................................................................42
6.6 WRFD-050305 UBR+ ATM QoS Class......................................................................................................................43
6.6.1 Requirements.............................................................................................................................................................43
6.6.2 Procedure...................................................................................................................................................................43
6.6.3 MML Command Examples.......................................................................................................................................43
7 Parameters.....................................................................................................................................44
8 Counters........................................................................................................................................95
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9 Glossary.......................................................................................................................................178
10 Reference Documents.............................................................................................................179
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1Introduction
1.1 Scope
This document merges the basic ATM transport principle. It describes protocol stacks,
transmission resources, transmission resource management (TRM), and associated parameters.
1.2 Intended Audience
This document is intended for personnel who:
l Need to understand the features described herein
l Work with Huawei products
1.3 Change History
This section provides information about the changes in different document versions. There are
two types of changes, which are defined as follows:
l Feature change
Changes in features of a specific product version
l Editorial change
Changes in wording or addition of information that was not described in the earlier version
01 (2013-04-28)
This issue does not include any changes.
Draft A (2013-01-30)
Compared with issue 01 (2012-07-20) of RAN14.0, Draft A (2013-07-30) of RAN15.0 includes
the following changes.
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Change Type Change Description Parameter Change
Feature change None None
Editorial change Added the differences
between the BSC6900 and
BSC6910 to the following
chapters and sections: 2
Overview of ATM
Transport, 3.1 Iub Over
ATM,3.2 Iu-CS over ATM,
3.4 Iur over ATM, 3.5.2
Fractional Modeand 3.6.2
Function of Timeslot Cross
Connection.
None
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2Overview of ATM TransportHuawei radio access network (RAN) provides ATM-based Iub/Iu(Iu-CS and Iu-PS)/Iur
interfaces and ATM TRM, such as admission control based on AAL2 path bandwidth;
transmission resource mapping based on ATM QoS classes, and Iub overbooking.
NOTE
The Iu-PS interfaces of BSC6910 do not support ATM Transport.
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ATM Transport Feature Parameter Description 2 Overview of ATM Transport
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3Protocol Stacks
3.1 Iub Over ATM
3.1.1 Protocol Stack
Figure 3-1shows the protocol stack for the ATM-based Iub interface.
Figure 3-1Protocol stack for the ATM-based Iub interface
The transport network layer of the Iub interface consists of the transport network layer control
plane (area A), transport network layer control plane (area B), and transport network layer user
plane (area C).
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l Areas A, B, and C share the physical layer and ATM layer. Therefore, all links in the three
areas can be carried on common physical links.
l Links in areas A and B are carried on SAAL links. Based on the type of carried information,
the upper layer of area A is classified into the NodeB Control Port (NCP) and the
Communication Control Port (CCP). Only Q.AAL2 links are carried in area B.l In area C, the user plane data is carried on AAL2 paths. The bearer at the lower layer is the
ATM PVC. Under the control of Q.AAL2, AAL2 connections can be dynamically set up
or released for upper-layer services. Therefore, each AAL2 path must have its
corresponding controlling Q.AAL2.
3.1.2 Links on the Iub Interface
The links on the ATM-based Iub interface are of three types: SAAL link of User-Network
Interface (UNI) type, AAL2 path, and IPoA PVC. The SAAL link of UNI type is used to carry
NCP, CCP, and ALCAP, as shown in Figure 3-2.
Figure 3-2Links on the Iub interface
NOTE
The RINT shown in Figure 3-2 refers to ATM interface boards UOIa/UOIc, AOUa/AOUc, and AEUa for
BSC6900, UOIc/AOUc for BSC6910.
3.1.3 OM IPoA Data Configuration on the Iub Interface
On the ATM-based Iub interface, the IPoA PVC functions as the Operation and Maintenance
(OM) channel.
OM IPoA PVC on the Iub Interface
Figure 3-3shows the IPoA PVCs from the RNC to NodeBs.
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Figure 3-3IPoA PVCs from the RNC to NodeBs
NOTE
The RINT shown in Figure 3-3refers to ATM interface boards UOIa/UOIc, AOUa/AOUc, and AEUa for
BSC6900, UOIc/AOUc for BSC6910.
Network Segments
Iub OM channel travels through the following network segments before reaching the NodeB:
l The 80.168.3.0 segment (with network mask of 255.0.0.0) between the OM board and the
ATM interface board. This network segment is set before delivery of the BSC6900.
l The 12.13.1.0 segment (with network mask of 255.255.255.0) between the ATM interface
board and the NodeBs. When setting this network segment, you need to take field conditionsinto consideration.
3.2 Iu-CS over ATM
3.2.1 Protocol Stack
Figure 3-4shows the protocol stack for the Iu-CS interface.
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Figure 3-4Protocol stack for the ATM-based Iu-CS interface
The transport network layer of the Iu-CS interface consists of the following areas:
l Transport network layer control plane (area A)
l Transport network layer control plane (area B)
l Transport network layer user plane (area C)
Areas A, B, and C share the physical layer and ATM layer. Therefore, all links in the three areas
can be carried on common physical links.
The MSC in an R99 network implements the functions in areas A, B, and C of the protocol stack.
The MSC server and MGW in an R4/R5/R6/R7/R8 network implement their functions as
follows:
l The MSC server implements the functions in area A.
l The MGW implements the functions in areas B and C.
3.2.2 Links on the Iu-CS Interface
The Iu-CS links on the CN side are of two types: MTP3 link and AAL2 path.Figure 3-5shows
the links on the ATM-based Iu-CS interface.
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Figure 3-5Links on the Iu-CS Interface
NOTE
The RINT shown in Figure 3-5refers to ATM interface boards UOIa/UOIc for BSC6900, UOIc for
BSC6910.
3.2.3 Differences of the Iu-CS Interface Between R99 and R4/R5/R6/R7/R8
In the 3GPP R99, the MSC connects to the RNC as one entity. In the 3GPP R4/R5/R6/R7/R8,
the MSC connects to the RNC after being split into two entities, namely, MSC server and MGW.
Iu-CS Interface Defined in the 3GPP R4/R5/R6/R7/R8
Figure 3-6shows the Iu-CS interface in the 3GPP R4/R5/R6/R7/R8.
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Figure 3-6Iu-CS interface in the 3GPP R4/R5/R6/R7/R8
The network may require multiple MGWs depending on the traffic volume.
In practice, the MSC server is often not directly connected to the RNC. Data is forwarded
between the MSC server and the RNC through the routes configured on the MGW. Figure
3-7shows an example of the network structure on the Iu-CS interface in the 3GPP R4/R5/R6/
R7/R8.
Figure 3-7Example of the network structure on the Iu-CS interface in the 3GPP R4/R5/R6/R7/R8
Data Configuration on the RNC
In the 3GPP R99, the RNC needs to be configured with only one type of Iu-CS signaling point,
that is, the MSC.
In the 3GPP R4/R5/R6/R7/R8, the RNC needs to be configured with the following two types of
Iu-CS signaling point:
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l MSC server (also called Iu-CS RANAP signaling point)
l MGW (also called Iu-CS ALCAP signaling point)
Table 3-1describes the differences between signaling point configuration in R99 and that in
R4/R5/R6/R7/R8.
Table 3-1Differences between signaling point configuration in R99 and that in R4/R5/R6/R7/
R8
Item R4/R5/R6/R7/R8 R99
Type Iu-CS RANAP signaling
point and Iu-CS ALCAP
signaling point
Iu-CS signaling point
Quantity More than one One
3.3 Iu-PS over ATM
3.3.1 Protocol Stack
Figure 3-8shows the protocol stack for the Iu-PS interface.
Figure 3-8Protocol stack for the ATM-based Iu-PS interface
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The transport network layer of the Iu-PS interface consists of the transport network layer control
plane (area A) and the transport network layer user plane (area C).
Areas A and C share the physical layer and ATM layer. Therefore, all links in the two areas can
be carried on common physical links.
3.3.2 Links on the Iu-PS Interface
The Iu-PS links on the CN side are of two types: MTP3 link and IPoA PVC. Figure 3-9shows
the links on the ATM-based Iu-PS interface.
Figure 3-9Links on the ATM-based Iu-PS interface
NOTE
The RINT shown in Figure 3-9refers to the UOIa/UOIc board.
3.3.3 IPoA Data Configuration on the Iu-PS User Plane
On the ATM-based Iu-PS interface, the IPoA PVC is implemented on the user plane.
IPoA PVC on the Iu-PS User Plane
Figure 3-10shows the IPoA PVC on the Iu-PS user plane.
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Figure 3-10IPoA PVC on the Iu-PS interface
NOTE
The RINT shown in Figure 3-10 refers to ATM interface boards UOIa/UOIc.
IPoA Data on the Iu-PS User Plane
Table 3-2describes the IPoA data to be configured on the user plane of the ATM-based Iu-PS
interface.
Table 3-2IPoA data on the user plane of the ATM-based Iu-PS interface
Item Description
Local IP address of the IPoA PVC (IPADDR(BSC6900,BSC6910))
Device IP address on the ATM interfaceboard of the RNC
Peer IP address of the IPoA PVC
(PEERIPADDR(BSC6900,BSC6910))
IP address of the gateway on the SGSN side
PVC between the interface board carrying the
IPoA data and the gateway on the SGSN side
-
Route between the interface board carrying
the IPoA data and the network segment of the
peer SGSN
If the IP address of the interface board
carrying the IPoA data and the IP address of
the peer SGSN are located on different
subnets, routes to the destination IP addressneed to be configured at the RNC. DSTIP
(BSC6900,BSC6910)is the IP address of the
SGSN, and NEXTHOP
(BSC6900,BSC6910)is the IP address of the
gateway on the SGSN side.
NOTE
On the Iu-PS interface, the SGSN must be configured with routes to the network segment to which the IP
address of the RNC interface board belongs. The next hop is the gateway on the RNC side. Otherwise, PSservices cannot be provided.
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3.4 Iur over ATM
3.4.1 Protocol Stack
Figure 3-11shows the protocol stack for the Iur interface.
Figure 3-11Protocol stack for the ATM-based Iur interface
The transport network layer of the ATM-based Iur interface consists of the following areas:
l Transport network layer control plane (area A)
l Transport network layer control plane (area B)
l Transport network layer user plane (area C)
3.4.2 Links on the Iur Interface
The Iur links are of two types: MTP3 link and AAL2 path. Figure 3-12shows the links on the
ATM-based Iur interface.
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Figure 3-12Links on the Iur interface
NOTE
The RINT shown in Figure 3-12refers to ATM interface boards UOIa/UOIc for BSC6900, UOIc for
BSC6910.
3.4.3 Configuration Principles for Static Relocation Routes over Iur
The IP routes on the Iur interface are used to forward the PS data during Serving Radio Network
Subsystem (SRNS) relocation. During the SRNS relocation, the PS data is transferred from the
local RNC to the SGSN and then tothe neighboring RNC. Therefore, the prerequisites for
configuring IP routes on the Iur interface are that the IP paths between the local RNC and the
SGSN, between the neighboring RNC and the SGSN, and between the serving RNC and the
drift RNC are configured.
Figure 3-13shows the configuration of IP routes on the Iur interface. The IP routes configured
in multiple subsystems are similar.
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Figure 3-13IP route configuration on the Iur interface
NOTE
The RINT shown in Figure 3-13refers to Iu-PS IP interface boards GOUa/GOUc, FG2a/FG2c, and UOIa
(UOIa_IP) for BSC6900, GOUc/FG2c/EXOUa for BSC6910.
3.5 ATM Transport Modes
ATM transport has the following three modes:
l Fractional and IMA: They apply to an AEUa, AOUa, or AOUc.
l UNI: It applies to an AEUa, AOUa, AOUc, or UOIc.
3.5.1 UNI Mode
Principles of UNI Mode
The UNI mode is a transport mode at the Transmission Convergence (TC) sublayer of the
physical layer.
In UNI mode, an ATM cell is directly carried on an E1/T1 frame and the bits of the ATM cell
are sequentially mapped to the valid timeslots on the E1/T1 frame. Figure 3-14shows the
mapping between the ATM cell and the E1 timeslots in UNI mode. The 53 bytes of the ATM
cell are sequentially carried on E1 timeslots. Each E1 frame provides 31 timeslots (with slot 0
unavailable) for carrying the ATM cell.
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Figure 3-14Mapping between the ATM cell and the E1 timeslots in UNI mode
The UNI mode has the characteristics of scrambling, line coding, 16-timeslot enabling, and clockmode. The related parameters are as follows:
l Scrambling switch: specifies whether to enable scrambling.
l Line coding method: specifies the line coding method.
l 16-timeslot switch: specifies whether to use timeslot 16 or not.
The settings of scrambling switch, line coding method, and 16-timeslot switch at both ends of
E1/T1 must be identical.
The parameters corresponding to UNI mode are shown in Table 3-3.
Table 3-3Parameters correspond to UNI mode
NE Scrambling Switch
Line CodingMethod
16-TimeslotSwitch
RNC SCRAMBLESW
(BSC6900,BSC6910
)
PTCODE TS16ENABLE
NodeB SCRAM LNCODE TS16
Note:
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Only AEUa support the parameterPTCODEand TS16ENABLE.
Clock Mode
There are two clock modes on the RNC side:l Common Transmit Clock (CTC): In CTC clock mode, all links in an IMA group share one
clock source. The clock source may be extracted from the same external clock or from a
link.
l Independent Transmit Clock (ITC): In ITC mode, the clocks used by the links within an
IMA group are derived from at least two clock sources. The loopback clock mode is a
special case of the ITC mode.
The clock mode on the RNC is not configurable, and the default clock mode on the RNC side
is CTC.
The clock mode on the NodeB side is specified by the parameter CLKM(UNI mode/fractional
mode)/CLKM(IMA mode). The clock mode settings at both ends of E1/T1 must be identical.
Line Coding Method
There are four line coding methods:
l HDB3 (for E1 port)
l AMI (for E1/T1 port)
l AMI_ZCS (for E1/T1 port)
l B8ZS (for T1 port)
The coding methods of E1 port are HDB3 and AMI, and the HDB3 is recommended. HDB3represents high-density bipolar code. It is not easy to be interfered, and the transmission distance
is several kilometers.
The coding methods of T1 port are B8ZS and AMI, and B8ZS is recommended. It helps prevent
clock signals from being lost, while AMI cannot perform this function.
3.5.2 Fractional Mode
Fractional mode (WRFD-050302 Fractional ATM Function on Iub Interface) is applicable to
the Transmission Convergence (TC) sublayer of the physical layer. This section describes the
principles and functions of fractional ATM, introduces the two implementation modes (that is,
fractional IMA and fractional ATM), and provides the principles for configuring fractional IMAlinks and fractional ATM links.
Principles of Fractional ATM
In the case of fractional ATM, multiple timeslots out of the 32 timeslots on an E1 (or 24 timeslots
on a T1) are used to transmit an ATM cell. At the transmission end, an ATM cell is mapped to
multiple timeslots among the 31 timeslots on an E1 (or 24 timeslots on a T1). At the reception
end, the ATM cell is restored from the associated timeslots on the E1/T1. Figure 3-15shows
the fractional ATM mode. An E1 frame has timeslots numbered from 0 to 31. All the timeslots
except timeslot 0 are available for service data transmission. A T1 frame has timeslots numbered
from 1 to 24. All the timeslots are available for service data transmission. The timeslots to which
the ATM cell is not mapped can transmit other data.
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Figure 3-15Fractional ATM mode
If multiple E1/T1 trunks exist between the transmission end and the reception end and work in
IMA mode, such an IMA mode is called fractional IMA.In fractionalIMA mode, an IMA group
contains multiple fractional ATM links.
The fractional ATM mode has the characteristics of scrambling, line coding, and clock mode.
For details about clock mode, see Clock Mode. The related parameters are as follows:
l Scrambling switch: specifies whether to enable scrambling.
l Line coding method: specifies the line coding method.
l E1/T1 timeslot: specifies the timeslot used to transmit the ATM cell.
The settings of scrambling switch, line coding method, and E1/T1 timeslot at both ends of E1/
T1 must be identical.
The parameters corresponding to fractional mode are shown in Table 3-4.
Table 3-4Parameters correspond to fractional mode
NE Scrambling Switch
Line CodingMethod
E1/T1 Timeslot
RNC SCRAMBLESW
(BSC6900,BSC6910
)
PTCODE TSBITMAP
(BSC6900,BSC6910
)
NodeB SCRAM LNCODE TSN
NOTE
Only AEUa support the parameter PTCODE.
Function of Fractional ATM
After the fractional ATM function is enabled, the ATM cells of a 3G network can be transmitted
over an existing 2G network, as shown in Figure 3-16.
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Figure 3-16Fractional ATM function
Two Modes of the Fractional ATM Function
There are two implementation modes of the fractional ATM function on the Iub interface:
l Fractional ATM
In fractional ATM mode, multiple idle timeslots can be used for transmission.
l Fractional IMA
In fractional IMA mode, multiple fractional IMA links are logically gathered into a group
with each fractional IMA link occupying the same number of idle timeslots.
The parameter FRALNKTis used to specify the fractional link mode on the RNC side.
Table 3-5shows the boards that support the fractional mode.
Table 3-5Fractional mode of BSC6900/BSC6910
Modes of the FractionalATM Function
BSC6900 BSC6910
Fractional ATM The fractional ATM/IMA
mode are applicable only to
the AEUa/AOUc board.
The fractional ATM mode
are applicable only to the
AOUc board.
Fractional IMA Not support
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3.5.3 IMA Mode
Overview
IMA mode (WRFD-050304 IMA Transmission for E1T1 or Channelized STM-1/OC-3 on Iub
Interface) is applicable to the Transmission Convergence (TC) sublayer of the physical layer.
The IMA function is implemented by the IMA group, which is composed of either IMA links
or fractional IMA links.
All IMA links within an IMA group must be of the same type, either common IMA link or
fractional IMA link. If an IMA group is composed of fractional IMA links, the quantity of
timeslots carrying each fractional IMA link must be identical.
Principles of IMA Mode
Figure 3-17shows the principles of the IMA mode based on the assumption that each IMAgroup contains three E1/T1 links.
l At the transmission end, the IMA group receives the ATM cell stream from the ATM layer
and distributes the cells among the E1/T1 links.
l At the reception end, the IMA group reassembles the cells to restore the original ATM cell
stream, and then transfers the cell stream to the ATM layer.
The physical layer provides high-speed transport channels for ATM cells from the perspective
of the ATM layer.
Figure 3-17Principles of the IMA mode
In IMA mode, ATM cells, IMA Control Protocol (ICP) cells, and filler cells form an IMA frame
to implement necessary controlling functions.
The length of an IMA frame, m, is defined during the setup of an IMA group. The parameter
FRMLEN(BSC6900,BSC6910)(at the RNC)/FRMLEN(at the NodeB) is used to specify the
length of an IMA frame.
Figure 3-18shows an IMA frame. The mapping between the ATM cell and the physical link
(that is, the E1/T1 link) is similar to that in UNI mode.
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Figure 3-18IMA frame
The IMA mode has the characteristics of scrambling, line coding, 16-timeslot enabling, and
clock mode. The clock mode of an IMA group is defined from the perspective of an IMA group
rather than a single link. For details about clock mode, see Clock Mode. The related parameters
are as follows:
l Scrambling switch: specifies whether to enable scrambling.
l Line coding method: specifies the line coding method.
l 16-timeslot switch: specifies whether to use timeslot 16 or not.
The setting of scrambling switch, line coding method, and 16-timeslot switch at both ends of
E1/T1 must be identical.
The parameters corresponding to IMA mode are shown in Table 3-6.
Table 3-6Parameters correspond to IMA mode
NE Scrambling Switch Line Coding Method
16-TimeslotSwitch
RNC SCRAMBLESW
(BSC6900,BSC6910)
PTCODE TS16ENABLE
NodeB SCRAM LNCODE TS16
NOTE
Only AEUa support the parameter PTCODEand TS16ENABLE.
3.6 Timeslot Cross Connection
The timeslot cross connection function implements cross connections between timeslots on two
E1/T1s at the physical medium (PM) sublayer of the physical layer.
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3.6.1 Principles of Timeslot Cross Connection
Figure 3-19shows an example of timeslot cross connection. The timeslot cross connection
device cross-connects the timeslots on one E1/T1 to the timeslots on the other E1/T1. In the
example shown in the following figure, the device cross-connects slots 2 and 3 on one E1/T1 toslots 4 and 8 on another E1/T1 respectively.
Figure 3-19Example of timeslot cross connection
3.6.2 Function of Timeslot Cross Connection
The AEUa/PEUa/POUc board of BSC6900 supports timeslot cross connection. The BSC6910
does not support timeslot cross connection. Through the configured timeslot cross connection,the E1 data in TS A of the source port is transmitted to TS B of the destination port. Therefore,
the timeslot cross connection helps provide a transparent data transmission channel for the 2G
equipment or NodeB monitoring equipment.
Figure 3-20shows implementation of timeslot cross connection.
Figure 3-20Implementation of timeslot cross connection
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NOTE
Neither the source timeslot nor the target timeslot of a timeslot cross connection can be used by other
applications, such as fractional ATM, IMA, and UNI.
If an E1 link is configured with a timeslot cross connection, the E1 link cannot carry any IMA or UNI link.
The other timeslots on this E1 link can carry fractional ATM or fractional IMA links.
The related parameters of the timeslot-cross connection function are as follows:
l SRCPORTNO: specifies the source port to perform the timeslot-cross connection function.
l SRCTSMASK: specifies the timeslots occupied by the source port.
l DSTPORTNO: specifies the destination port to perform the timeslot-cross connection
function.
l DSTTSMASK: specifies the timeslots occupied by the destination port.
Note:
The BSC6910 does not support timeslot cross connection.
3.7 PVC Parameters of the ATM LayerFor configuring the IPoA PVCs, AAL2 paths, SAAL links, or VPCLCX links, the PVC
parameters need to be set.
3.7.1 VPI and VCI
The main characteristics of the ATM technology are multiplexing, switching, and transmitting
of ATM cells. All these operations are performed over Virtual Channels (VCs). A VC and a
Virtual Path (VP) are identified by Virtual Channel Identifier (VCI) and Virtual Path Identifier(VPI) respectively.
Figure 3-21shows the relationship between VC and VP.
l A VC is identified by a VCI. It is a logical connection between ATM nodes and is the
channel for transmitting ATM cells between two or more nodes. The VC is used for the
data transmission between mobile terminals, between networks, or between mobile
terminal and network.
l A VP is a group of VCs at a given reference point. The VCs in the group have the same
VPI.
Figure 3-21Relationship between VC and VP
3.7.2 Service Type
The ATM services are of five types (WRFD-05030107 CBR, RT-VBR, NRT-VBR, UBR ATM
QoS Classes, WRFD-050305 UBR+ ATM QoS Class): Constant Bit Rate (CBR), Real-Time
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Variable Bit Rate (RT-VBR), Non-Real-Time Variable Bit Rate (NRT-VBR), Unspecified Bit
Rate (UBR), and UBR_PLUS (UBR+).
Table 3-7describes the types of service.
Table 3-7Types of service
Type ofService
Description
CBR No error check, flow control, or other processing
RT-VBR Rate of a service with variable-rate data streams and strict real-time
requirements, for example, interactive compressed video (video
telephony).
NRT-VBR Rate of a service that is applicable to timing transmission. A service of
this type, for example, e-mail, is relatively insensitive to delivery time ordelay.
UBR Rate of a service with no commitment to transmission and no feedback
on congestion. This type of service is ideal for the transmission of IP
datagrams. In congestion, UBR cells are discarded, and no feedback or
request for slowing down the data rate is delivered to the transmission
end.
UBR+ UBR+ is an enhancement of UBR with minimum desired cell rate
(MDCR) indication. UBR+ is the most suitable for Iub OAM channel.
The MCR of UBR+ ensures the connectivity of OAM connection in the
case of Iub transmission resource congestion, and the best effort serviceof UBR+ uses the transmission bandwidth completely.
Table 3-8describes the characteristics of different ATM services.
Table 3-8Characteristics of different ATM services
Characteris
tic
CBR RT-VBR NRT-VBR UBR UBR+
Bandwidth
guarantee
Yes Yes Yes No Yes
Applicabilit
y to real-time
communicati
on
Yes Yes No No No
Applicabilit
y to bursts of
communicati
on
No Yes Yes No No
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Characteristic
CBR RT-VBR NRT-VBR UBR UBR+
Feedback on
congestion
No No No No No
The ATM service type is also called ATM QoS class. The CBR, RT-VBR, NRT-VBR, or UBR
ATM QoS classes can be configured for AAL2 path, and the UBR+ ATM QoS class is generally
used for Iub OAM connection.
The service types carried on the AAL2 paths can be determined by running the ADD
ATMTRFcommand, and then the mapping between the service types and the transmission
resources for the adjacent node can be configured by running the ADD TRMMAPcommand.
3.7.3 ATM Traffic Records
The ATM traffic records are public resources, which can be used by the IPoA PVCs, AAL2
paths, SAAL links, and VPCLCX links. You need to add the traffic record at the RNC based on
the traffic model of the link on the Iub/Iu-CS/Iu-PS/Iur interface. The ATM traffic records can
be configured by the ADD ATMTRFcommand.
Traffic Parameters
Traffic parameters refer to the parameters used by each PVC for flow control.
Table 3-9describes the ATM traffic parameters.
Table 3-9ATM traffic parameters
Parameter ID Description
TRFX
(BSC6900,BSC6910)
Identifies a traffic record.
ST
(BSC6900,BSC6910)
Indicates the type of service carried over ATM. CBR and RT-VBR
indicate real-time services, which are usually carried on the user
planes of the Iur, Iub, and Iu-CS interfaces. NRT-VBR and UBR
indicate non-real-time services, which are usually carried on the
user plane of the Iu-PS interface.
UT
(BSC6900,BSC6910)
Indicates the unit of PCR(BSC6900,BSC6910), SCR
(BSC6900,BSC6910), and MCR(BSC6900,BSC6910).
PCR
(BSC6900,BSC6910)
Indicates the maximum rate of transmitting ATM cells. The value
of PCR(BSC6900,BSC6910)must be greater than that of SCR
(BSC6900,BSC6910).
SCR
(BSC6900,BSC6910)
Indicates the average rate of transmitting ATM cells over a long
time.
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Parameter ID Description
MCR
(BSC6900,BSC6910)
Indicates the minimum rate of transmitting ATM cells.
MBS
(BSC6900,BSC6910)
Indicates the maximum number of continuous ATM cells.
Generally, the value of MBS(BSC6900,BSC6910)cannot be
greater than PCR(BSC6900,BSC6910)x CDVT
(BSC6900,BSC6910). The value of CDVT(BSC6900,BSC6910)
can be set as large as possible within the permission of the delay
and delay variation.
CDVT
(BSC6900,BSC6910)
Indicates the maximum tolerable variation in the unit of 0.1 s.
NOTE
It is recommended that the cell delay variation tolerance (CDVT) of a device
connected to the NodeB be set to twice the CDVTof the NodeB, thereby
preventing packets from the NodeB being lost. The CDVTof the NodeB is
set to 10240 by default.
REMARK
(BSC6900,BSC6910)
Describes the usage of the ATM traffic record.
The traffic rate is indicated in the following ways:
l PCR(BSC6900,BSC6910): applicable when ST(BSC6900,BSC6910)is set to CBRand
the traffic rate is a constant value.
l Combination of PCR(BSC6900,BSC6910)and SCR(BSC6900,BSC6910): applicable
when ST(BSC6900,BSC6910)is set to RTVBRor NRTVBR.
l MCR(BSC6900,BSC6910): applicable when ST(BSC6900,BSC6910)is set to
UBR_PLUS.
ATM Traffic Record Configuration Principles
Table 3-10provides suggestions for configuring service types during configuration of ATM
traffic records for links.
Table 3-10Recommended service types for links
Link Preferred Service Type (In Descending Order)
NCP/CCP CBR, RTVBR
AAL2 path RTVBR, NRTVBR, CBR, UBR
IPoA PVC (user plane) UBR
IPoA PVC (management plane) UBR_PLUS, RTVBR, NRTVBR, CBR,
UBR
MTP3 link RTVBR, NRTVBR, CBR
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NOTE
l In practice, ATM traffic records should be negotiated between the local and the peer equipment.
l The ATM traffic parameters, such as PCR(BSC6900,BSC6910)and SCR(BSC6900,BSC6910),
should be configured depending on the traffic model in use.
l When configuring ATM traffic records for links, you need to consider the traffic on the interface boards
of the RNC.
3.8 AAL5
In ATM transport mode, AAL5 connections are used to carry the signaling on the Iub/Iur/Iu
interface (WRFD-05030105 permanent AAL5 connections for control plane traffic). As defined
in 3GPP specifications, UNI-SAAL is used for control plane connections on the Iub interface,
and NNI-SAAL is used for control plane connections on the Iur and Iu interfaces. The AAL5
connections for Iub/Iu-CS/Iur are set up by configuring the SAAL links.
You can run the ADD SAALLNKcommand to configure the AAL5 connections on the Iub/
Iur/Iu interface. On the RNC side, when an AAL5 connection is configured, the TXTRFX
(BSC6900,BSC6910)and RXTRFX(BSC6900,BSC6910)parameters need to be set. The
TXTRFX(BSC6900,BSC6910) and RXTRFX(BSC6900,BSC6910)parameters record the
ATM traffic, and they can be configured through the ADD ATMTRFcommand.
An SAAL link is carried on an ATM PVC. The parameters CARRYVPI(BSC6900,BSC6910)
and CARRYVCI(BSC6900,BSC6910) are used to identify the PVCs on the RNC side, and the
parameters VPIand VCIare used to identify the PVCs on the NodeB side. The PVC identifier
and other PVC attributes must be negotiated between the RNC and the peer end.
The signaling messages carried on the UNI-SAAL links are classified into NCP, CCP, and
ALCAP, and the signaling messages carried on the NNI-SAAL links are MTP3, as described in
Table 3-11.
Table 3-11Data carried on SAAL links
Data Type Description
NCP The NCP carries common process messages of NBAP over the Iub interface.
An Iub interface has only one NCP.
CCP A CCP carries dedicated process messages of NBAP over the Iub interface.
An Iub interface may have multiple CCPs. The number of CCPs depends on
network planning.
ALCAP ALCAP is also called Q.AAL2. Typically, an Iub interface has one ALCAP.
MTP3 MTP3 links are contained in an MTP3 link set. MTP3 links are carried on the
SAAL links of Network-to-Network Interface (NNI) type.
3.9 AAL2 Path
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3.9.1 AAL2 Connections and AAL2 Path
The Q.AAL2 module is responsible for dynamically setting up and releasing AAL2 connections
between the RNC and the peer end. The peer end can be a NodeB, a CS CN node, or a neighboring
RNC. PATHID(BSC6900,BSC6910)specifies the ID of an AAL2 path, and the PATHID(BSC6900,BSC6910)of the same AAL2 path configured between two AAL2 nodes must be the
same. An AAL2 path contains multiple AAl2 connections. CID specifies the ID of an AAL2
connection on the path. The CID state can be Busy or Idle. If the CID is in the busy state, the
CID carries traffic; if the CID is in the idle state, no traffic is carried on it.
The AAL2 paths can be configured for the Iub/Iu-CS/Iur interface (WRFD-05030104 Dynamic
AAL2 Connections on Iub/IuCS/Iur Interface).
Figure 3-22shows the relationship between an AAL2 path and AAL2 connections on the Iub
interface.
Figure 3-22Relationship between an AAL2 path and AAL2 connections
According to different traffic classes (conversational, streaming, interactive, and background),the following types of AAL2 path can be configured:
l CBR
l RT-VBR
l NRT-VBR
l UBR
According to different types of service (R99, HSDPA, and HDUPA), the following types of
AAL2 path can be configured:
l R99
l HSPA
l SHARE
The AAL2 path can be configured through the ADD AAL2PATH command. On the RNC side,
when an AAL2 path is configured, the TXTRFX(BSC6900,BSC6910) and RXTRFX
(BSC6900,BSC6910)parameters need to be set. They determine the type of path. The TXTRFX
(BSC6900,BSC6910)andRXTRFX(BSC6900,BSC6910)parameters record the ATM traffic,
and they can be configured through the ADD ATMTRFcommand. For details, see section 3.7.3
ATM Traffic Records.
An AAL2 path is carried on a PVC. The parameters VPI(BSC6900,BSC6910)and VCI
(BSC6900,BSC6910)are used to identify the PVCs. The PVC identifier and other PVC attributes
must be negotiated between the RNC and the peer end.
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3.9.2 AAL2 Route
An AAL2 path may reach not the destination node but an adjacent node. In this case, AAL2
routes can be configured to reach the destination node. The AAL2 route to an ATM node can
be configured through the ADD AAL2RT command.
Figure 3-23shows an example of the AAL2 route.
Figure 3-23Example of the AAL2 route
NOTE
l Even if the destination node and the adjacent node are the same, an AAL2 route needs to be configured.
l The AAL2 route cannot be configured for the adjacent node of the IUPS type.
3.10 MTP3
3.10.1 MTP3 Links
MTP3 links are contained in an MTP3 link set. MTP3 links are carried on the SAAL links of
Network-to-Network Interface (NNI) type. You can run the command ADD MTP3LKSto
specify an MTP3 link set, and then run the command ADD MTP3LNKto add the MTP3 links
by using the parameterSIGLKSX(BSC6900,BSC6910).
MTP3 Links for Iu-CS Interface
The configuration of MTP3 links between the RNC and the MSC server depends on the
networking between the MSC server and the RNC:
l If the MSC server is directly connected to the RNC, at least one MTP3 link is required for
the MSC server (IUCS_RANAP signaling point). It is recommended that more than one
MTP3 link be configured.
l If the MSC server is connected to the RNC through the MGW, the MSC server
(IUCS_RANAP signaling point) does not require any MTP3 link.
l If the MSC server is connected to the RNC not only directly but also through the MGW,
as shown in Figure 3-24, the MSC server (IUCS-RANAP) requires at least one MTP3 link.
It is recommended that more than one MTP3 link be configured.
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Figure 3-24Example of connections between the MSC server and the RNC
MTP3 Links for Iu-PS Interface
An Iu-PS interface requires at least one MTP3 link. It is recommended that more than one MTP3
link be configured.
MTP3 Links for Iur Interface
The configuration of MTP3 links depends on the networking between the RNC and the
neighboring RNC:
l If the RNC is directly connected to the neighboring RNC, the Iur interface requires at least
one MTP3 link. It is recommended that more than one MTP3 link be configured.
l If the RNC is connected to the neighboring RNC through a Signaling Transfer Point (STP),
no MTP3 link is required.
It is recommended that the SAAL links of NNI type be evenly distributed to the CPUS
subsystems in the MPS/EPS so that the signaling exchange can be reduced between the CPUS
subsystems.
3.10.2 Types of MTP3 DSPs
The RNC supports seven types of Destination Signaling Point (DSP): IUCS, IUCS_ALCAP,
IUCS_RANAP, IUPS, IUR, STP, and AAL2SWITCH. DSPs of different types have differentmeanings.
Table 3-12describes the types of DSP.
Table 3-12Types of DSP
DSP Type Description
IUCS R99 MSC DSP. The IUCS DSP has the control plane functions of both
radio network layer and transport network layer on the Iu-CS interface.
IUCS_ALCAP R4 MGW DSP. The IUCS_ALCAP DSP has the control plane
functions of the transport network layer on the Iu-CS interface.
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DSP Type Description
IUCS_RANAP R4 MSC server DSP. The IUCS_RANAP DSP has the control plane
functions of the radio network layer on the Iu-CS interface.
IUPS Signaling point in the Iu-PS control plane
IUR Other RNC signaling points
STP Signaling transfer point
AAL2SWITCH AAL2 transfer point
3.10.3 Signaling Route Mask and Signaling Link Mask
The number (represented by n) of 1s in a signaling route mask determines the maximum number
of routes (2n). For example, B0000 indicates that there is at most one route. B0001 or B1000
indicates that there are at most two routes.
The number (represented by n) of 1s in a signaling link mask determines the maximum number
of links (2n). For example, B0000 indicates that there is at most one link. B0001 or B1000
indicates that there are at most two links.
The result of the logical AND operation on the signaling link mask and the signaling route mask
must be 0, as shown in Figure 3-25.
Figure 3-25Relationship between signaling link mask and signaling route mask
3.11 IPOA PVC
IPOA is a technology in which IP packets are transmitted over the ATM transport network.
Essentially, the ATM links over each interface are carried over PVCs. The IPoA PVCs on the
Iub interface are used to transmit the OM information of a NodeB. In this case, the IPoA PVC
is called the management plane IPoA PVC. The IPoA PVC on the Iu-PS interface is a PVC to
the SGSN gateway.
The IPOA PVC can be configured through the ADD IPOAPVCcommand. If the parameter
PEERT(BSC6900,BSC6910)is set to IUB, the IPOA link can only be used as an OM channel.
The parameters CARRYVPI(BSC6900,BSC6910) and CARRYVCI(BSC6900,BSC6910) are
used to identify the PVCs.
When an IPOA PVC is configured, the TXTRFX(BSC6900,BSC6910) and RXTRFX
(BSC6900,BSC6910)parameters need to be set. The TXTRFX(BSC6900,BSC6910) and
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RXTRFX(BSC6900,BSC6910)parameters record the ATM traffic, and they can be configured
through the ADD ATMTRFcommand.
3.12 F5Huawei supports operations on ATM OAM F5 end-to-end flows specified in ITU I.610
(WRFD-05030110 F5):
l Fault management
AIS: alarm indication signal
RDI: remote defect indication
CC: continuity check and loopback
l Performance management
Forward monitoring
Backward reporting
l Activation and deactivation
The CC can be activated to monitor the end-to-end AAL2 path virtual connect link (VCL) and
Iu-PS user plane VCL. When one VCL for AAL2 path or Iu-PS GTPU is loss of continuity
(LOC), AIS, or RDI, this VCL is blocked. Then the service is established on other alternative
VCLs to prevent the failure of the call. You can run the ACT VCLCCcommand to activate the
CC function and the DEA VCLCCcommand to deactivate the CC function. When the parameter
VCLTYPEis set to CC, the CC function is activated.
Huawei also supports proprietary delay detection function. When an NE receives a detection
start command from the NMS, it starts detecting delay on the current AAL2 link or AAL5 linkand periodically reports the delay to the NMS. The 8-byte reserved IE (LB IE) in the loopback
message is used to store the message transmission time. When an NE receives the loopback
message, it calculates the delay based on the time difference between transmission and reception.
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4ATM Transmission ResourcesATM transmission resources can be classified into physical resources, logical ports, resource
groups, and paths. The transmission resources for Iub/Iu/Iur interfaces vary according to
different networking. Huawei supports the following types of ATM transmission:
l ATM over E1T1 on Iub interface (WRFD-05030101 ATM over E1T1 on Iub interface)
The BSC6910 does not support this feature.
l ATM over channelized STM-1/OC-3 on Iub interface (WRFD-05030102 ATM over
channelized STM-1/OC-3 on Iub interface)
l ATM over non-channelized STM-1/OC-3c on Iub/Iu/Iur interface (WRFD-05030103
ATM over non-channelized STM-1/OC-3c on Iub/Iu/Iur interface)
For details about the ATM transmission resources, see "Transmission Resources" in the
Transmission Resource Management Feature Parameter Description.
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5ATM Transmission Resource ManagementFor ATM transport, Huawei provides the following transmission resource management:
l Admission control (WRFD-05030106 Call Admission Based on Used AAL2 Path
Bandwidth), which is used to allow more users to be admitted with the QoS guaranteed.
l Transmission resource mapping, in which the CBR, RT-VBR, NRT-VBR, and UBR ATM
QoS classes are used to implement differentiated services.
l Iub overbooking (WRFD-050405 Overbooking on ATM Transmission, WRFD-050406
ATM QoS Introduction on Hub Node B (Overbooking on Hub Node B Transmission)),
which is used to improve the usage efficiency on ATM transport scenario
For details about admission control, transmission resource mapping, and Iub overbooking, see
the Transmission Resource Management Feature Parameter Description.
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6Engineering Guidelines
6.1 WRFD-05030104 Dynamic AAL2 Connections in Iub/IuCS/Iur Interface
This section describes how to activate, verify, and deactivate the basic feature WRFD-05030104
Dynamic AAL2 Connections in Iub/IuCS/Iur Interface.
6.1.1 Requirements
l Dependencies on Hardware
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
None
l License
This feature is not under license control.
l Other Prerequisites
The RAN is based on ATM transmission.
6.1.2 Procedure
Activation
l On the RNC side
1. Run the RNC MML command ADD ADJNODE(CME single configuration: NodeB
Configuration Express > IUB_RNC > ATM Transport > Adjacent Node, IUR
Configuration Express > ATM Transport > Adjacent Node, IUCS Configuration
Express > ATM Transport > Adjacent Node; CME batch modification center: not
supported) to add an adjacent node. Set the parameter Adjacent Node Typeto IUB,
IUR, or IUCS, and the parameter Transport Typeto ATM. If the node is the lowest
leaf node of the switching network, set the parameter Is Root Nodeto YES; otherwise,
set the parameter Is Root Nodeto NO.
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NOTE
For an adjacent node on the Iur or Iu-CS interface, the parameter Adjacent Node Typeof its upper-
level hub node must be NNI_AAL2SWITCH; for an adjacent node on the Iub interface, the
parameter Adjacent Node Typeof its upper-level hub node must be UNI_AAL2SWITCH.
2. Run the RNC MML command ADD AAL2PATH(CME single configuration: NodeB
Configuration Express > IUB_RNC > ATM Transport > AAL2 Path, IUCS
Configuration Express > ATM Transport > AAL2 Path, IUR Configuration Express
> ATM Transport > AAL2 Path; CME batch modification center: not supported) to
add an AAL2 path. The parameters CARRYVPIand CARRYVCImust be consistent
with those of the AAL2 path configured on the peer end.
l On the NodeB side
For details about configuration on the NodeB side, obtain the documentation 3900 Series
Base Station Product Documentation and navigate in the following sequence: 3900 Series
Base Station Initial Configuration (CME-based) > Creating Base Stations > Creating
NodeBs > Creating a Single NodeB > Configuring NodeB Transport Data > ConfiguringATM Transport Data on the NodeB Side.
Verification
Step 1 Run the RNC MML command DSP AAL2PATHto query the status of the AAL2 path on theIub interface.
Expected result: The value of Operation stateis Available.
Step 2 Run the NodeB MML command DSP AAL2PATHto query the status of the AAL2 path on theIub.
Expected result: The value of AAL2 Path Statusis Normal.
Step 3 In the Iub/Iu-CS ATM transmission scenario, a UE in idle state camps on CELL1 and the controlplane is correctly configured. Originate the speech and data services. If the service access is
normal, the AAL2 path on the Iub/Iu-CS interface is set up successfully.
Step 4 Optional: In the ATM transmission scenario on the Iur interface, a UE in idle state camps onCELL1 and the control plane is correctly configured. Originate a cross-Iur handover. If the
handover is successful, the AAL2 path on the Iur interface is set up successfully.
----End
Deactivation
Step 1 Run the RNC MML command RMV AAL2PATH(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > AAL2 Path, IUCS Configuration
Express > ATM Transport > AAL2 Path, IUR Configuration Express > ATM Transport > AAL2
Path; CME batch modification center: not supported) to delete an AAL2 path.
Step 2 Run the RNC MML command RMV ADJNODE(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > Adjacent Node, IUR Configuration
Express > ATM Transport > Adjacent Node, IUCS Configuration Express > ATM Transport >
Adjacent Node; CME batch modification center: not supported) to delete an ATM adjacent node.
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Step 3 Run the NodeB MML command RMV AAL2PATH(CME single configuration: ATMTransport Layer > AAL2path) to delete an AAL2 path on the NodeB side.
----End
6.1.3 MML Command Examples//Activating Dynamic AAL2 Connections in Iub/IuCS/Iur Interface
//Adding an adjacent node
ADD ADJNODE: ANI=2, NAME="MSC1", NODET=IUCS, TRANST=ATM, IsROOTNODE=YES, DPX=1;
//Adding an AAL2 path
ADD AAL2PATH: ANI=2, PATHID=1, CARRYT=UNI, CARRYF=1, CARRYSN=14, CARRYUNILNKN=0,
RSCGRPFLAG=NO, VPI=12, VCI=126, TXTRFX=111, RXTRFX=111, AAL2PATHT=R99;
//Verifying Dynamic AAL2 Connections in Iub/IuCS/Iur Interface
DSP AAL2PATH: ANI=2, PATHID=1;
//Deactivating Dynamic AAL2 Connections in Iub/IuCS/Iur Interface
//On the RNC side
//Deleting an AAL2 pathRMV AAL2PATH: ANI=2, PATHID=1;
//Deleting an ATM adjacent node
RMV ADJNODE: ANI=2;
//On the NodeB side
RMV AAL2PATH: NT=LOCAL, PATHID=1;
6.2 WRFD-05030105 Permanent AAL5 Connections for
Control Plane Traffic
This section describes how to activate, verify, and deactivate the basic feature WRFD-05030105
Permanent AAL5 Connections for Control Plane Traffic.
6.2.1 Requirements
l Dependencies on Hardware
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
This feature does not depend on other features.
l License
This feature is not under license control.
l Other Prerequisites
The equipment data has been configured for the ATM transmission on the Iub/Iu/Iur
interface. For details, see section Configuring the Equipment Dataof theBSC6900 UMTS
Initial Configuration Guide orBSC6910 UMTS Initial Configuration Guide.
6.2.2 Procedure
Activation Procedure
Step 1 Run the RNC MML command ADD SAALLNK(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > SAAL Signaling Link, IUCS
Configuration Express > ATM Transport > SAAL Signaling Link, IUR Configuration Express
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> ATM Transport > SAAL Signaling Link; CME batch modification center: not supported) to
add an SAAL link. If the interface is Iub, set the parameter Interface typeto UNI. If the interface
is Iu or Iur, set Interface typeto NNI.
Step 2 Optional: Run the RNC MML command ADD UNCP(CME single configuration: NodeB
Configuration Express > IUB_RNC > ATM Transport > NCP Link; CME batch modificationcenter: not supported) to add a NodeB Control Port (NCP) link.
Step 3 Optional: Run the RNC MML command ADD UCCP(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > CCP Link; CME batch modification
center: not supported) to add a Communication Control Port (CCP) link.
----End
NOTE:
An SAAL link can carry only one NCP or CCP link. Therefore, choose to perform step 2 or step
3 based on the actual situation.
Verification Procedure
Run the RNC MML command DSP SAALLNKto query the status of the SAAL link.
Expected result: The value of SAAL link stateis AVAILABLE.
Deactivation Procedure
NOTE:
An SAAL link can carry only one NCP or CCP link. Therefore, choose to remove the NCP or
CCP link carried by the SAAL link, based on the actual situation.
Step 1 Optional: Run the RNC MML command RMV UNCP(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > NCP Link; CME batch modification
center: not supported) to remove the NCP link carried by the SAAL link.
Step 2 Optional: Run the RNC MML command RMV UCCP(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > CCP Link; CME batch modification
center: not supported) to remove the CCP link carried by the SAAL link.
Step 3 Run the RNC MML command RMV SAALLNK(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > SAAL Signaling Link, IUCS
Configuration Express > ATM Transport > SAAL Signaling Link, IUR Configuration Express
> ATM Transport > SAAL Signaling Link; CME batch modification center: not supported) to
remove the SAAL link.
----End
6.2.3 MML Command Examples//Activating Permanent AAL5 Connections for Control Plane Traffic
ADD SAALLNK: SRN=1, SN=2, SAALLNKN=10, CARRYT=UNI, CARRYSRN=0, CARRYSN=14,
CARRYUNILNKN=2, CARRYVPI=10, CARRYVCI=55, TXTRFX=100, RXTRFX=100, SAALLNKT=UNI;
ADD UCCP: NODEBNAME="NodeB1", PN=0, CARRYLNKT=SAAL, SAALLNKN=10;
//Verifying Permanent AAL5 Connections for Control Plane Traffic
DSP SAALLNK: SRN=1, SN=2, SAALLNKN=10;
//Deactivating Permanent AAL5 Connections for Control Plane TrafficRMV UCCP: NODEBNAME="NodeB1", PN=0; RMV SAALLNK: SRN=1, SN=2, SAALLNKN=10;
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6.3 WRFD-05030106 Call Admission Based on Used AAL2
Path BandwidthThis section describes how to activate, verify, and deactivate the basic feature WRFD-05030106
Call Admission Based on Used AAL2 Path Bandwidth.
6.3.1 Requirements
l Dependencies on Hardware
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
This feature does not depend on other features.
l License
This feature is not under license control.
6.3.2 Procedure
Activation
Step 1 Run the RNC MML command ADD ATMTRF(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > ATM Traffic Record; CME batch
modification center: not supported) to set parameters to appropriate values. For example, set
Service typeto NRTVBR, Peak cell rateto 100, and Sustainable cell rateto 80.
Step 2 Run the RNC MML command ADD AAL2PATH(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > AAL2 Path; CME batch modification
center: not supported) to add an ATM Adaptation Layer type 2 (AAL2) path. In this step, set
TXTRFXand RXTRFXin accordance with the settings in step 1.
----End
Verification
Step 1 Assume that the verification is based on the preceding parameter settings and the peer end is
configured with the corresponding AAL2 path link. Originate a PS interactive service. If thesubscribed rate is 64 kbit/s, the UE successfully accesses the network.
Step 2 Run the RNC MML command DSP AAL2PATHto view that the used bandwidth of the pathis about 30 kbit/s, which is the admission bandwidth of the control plane.
Step 3 Originate consecutive multiple PS interactive services when the service established in step 1 isnot released. If the subscribed rate is 64 kbit/s, the third PS interactive service fails to be set up.
----End
Deactivation
This feature does not need to be deactivated.
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6.3.3 MML Command Examples
//Activation procedure
ADD ATMTRF: TRFX=100, ST=NRTVBR, UT=CELL/S, PCR=100, SCR=80;
ADD AAL2PATH: ANI=0, PATHID=10, CARRYT=UNI, CARRYF=1, CARRYSN=14, CARRYUNILNKN=0,
RSCGRPFLAG=NO, VPI=12, VCI=126, TXTRFX=100, RXTRFX=100, AAL2PATHT=R99;
6.4 WRFD-05030107 CBR, rt-VBR, nrt-VBR, UBR ATM QoSClasses
This section describes how to activate, verify, and deactivate the basic feature
"WRFD-05030107 CBR, rt-VBR, nrt-VBR, UBR ATM QoS Classes".
6.4.1 Requirements
l Dependencies on Hardware
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
This feature does not depend on other features.
l License
This feature is not under license control.
6.4.2 Procedure
Activation Procedure
Run the RNC MML command ADD ATMTRF(CME single configuration: NodeB
Configuration Express > IUB_RNC > ATM Transport > ATM Traffic Record; CME batch
modification center: not supported) to add an ATM traffic record. To add more ATM traffic
records, run this command repeatedly.
Verification Procedure
Ensure that an AAL2 path using the ATM traffic record added in the activation procedure and
TRMMAP of the AAL2 path have been set before the verification.
Step 1 Set up a service.
Step 2 Start the Iub interface tracing task on the LMT.
Step 3 Check TXTRFXof the AAL2 path corresponding to the path ID in the QAAL2 Establish requestmessage.
The expected result is that the value of TXTRFXis consistent with that in the ADD
ATMTRFcommand.
----End
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Deactivation Procedure
Step 1 Run the RNC MML command RMV AAL2PATH(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > AAL2 Path, IUCS Configuration
Express > ATM Transport > AAL2 Path, IUR Configuration Express > ATM Transport > AAL2Path; CME batch modification center: not supported) to delete an AAL2 path using an ATM
traffic record. To delete more AAL2 paths, run this command repeatedly.
Step 2 Run the RNC MML command RMV ATMTRF(CME single configuration: NodeBConfiguration Express > IUB_RNC > ATM Transport > ATM Traffic Record; CME batch
modification center: not supported) to delete an ATM traffic record. To delete more ATM traffic
records, run this command repeatedly.
----End
6.4.3 MML Command Examples
//Activating CBR, rt-VBR, nrt-VBR, UBR ATM QoS Classes
ADD ATMTRF: TRFX=105, ST=CBR, UT=CELL/S, PCR=1000;
//Verifying CBR, rt-VBR, nrt-VBR, UBR ATM QoS Classes
LST ATMTRF: TRFX=105;
//Deactivating CBR, rt-VBR, nrt-VBR, UBR ATM QoS Classes
RMV AAL2PATH: ANI=2, PATHID=1;
RMV ATMTRF: TRFX=105;
6.5 WRFD-05030110 F5
This section describes how to activate, verify, and deactivate the basic feature WRFD-05030110
F5. (This feature cannot be configured using the CME.)
6.5.1 Requirements
l Dependencies on Hardware
Dependencies on the RNC side
None.
Dependencies on the NodeB side
Only 3900 series Base Station supports the passive detection based on IE LB.
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
This feature does not depend on other features.
l License
This feature is not under license control.
l Other Prerequisites
The basic information about the RNC is configured. For details, see the Configuring
the Basic Data.
The SAALLNK, AAL2PATH, or IPOAPVC link exists.
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6.5.2 Procedure
Activation Procedure
Step 1 Run the RNC MML command ACT VCLCCto activate the VCL CC or loopback function fora link. To activate the function for multiple links, run this command repeatedly. There are three
types of links, that is, SAALLNK, AAL2PATH, and IPOAPVC.
Step 2 Run the RNC MML command ACT VCLPMto activate the VCL PM function for a link. Toactivate the function for multiple links, run this command repeatedly. There are three types of
links, that is, SAALLNK, AAL2PATH, and IPOAPVC.
----End
Verification Procedure
Step 1 Run the RNC MML command DSP VCLCCto query the CC result of a VCL.
l If the VCL CC is activated and the PVC is functional, the SINK activated stateand
SOURCE activated stateare UP, and LOC, AIS, and RDIalarm state is normal.
l If the loopback is activated and the PVC is functional, the loopbackquery result is UP, and
LOC, AIS, and RDIalarm state is normal.
Step 2 Run the RNC MML command DSP VCLPMto query the PM result of a VCL.
l If the VCL PM is activated, the SINK activated stateand SOURCE activated stateare
PM_UP, and PM Active Fail Alarmis Normal.
----End
Deactivation Procedure
Step 1 Run the RNC MML command DEA VCLCCto deactivate the VCL CC or loopback functionfor a link. To deactivate the function for multiple links, run this command repeatedly. There are
three types of links, that is, SAALLNK, AAL2PATH, and IPOAPVC.
Step 2 Run the RNC MML command DEA VCLPMto deactivate the VCL PM for a link. To deactivatethe function for multiple links, run this command repeatedly. There are three types of links, that
is, SAALLNK, AAL2PATH, and IPOAPVC.
----End
6.5.3 MML Command Examples
//Activating F5
ACT VCLCC: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0, VCLTYPE=CC;
ACT VCLPM: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0;
//Verifying F5
DSP VCLCC: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0;
DSP VCLPM: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0;
//Deactivating F5
DEA VCLCC: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0;
DEA VCLPM: LNKT=SAALLNK, SRN=3, SN=2, SAALLNKN=0;
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6.6 WRFD-050305 UBR+ ATM QoS Class
This section describes how to activate, verify, and deactivate the basic feature "WRFD-050305UBR+ ATM QoS Class".
6.6.1 Requirements
l Dependencies on Hardware
BTS3902E and BTS3803E does not support this feature.
l Dependencies on Other Features
This feature does not depend on other features.
l License
This feature is not under license control.
l Other Prerequisites
The basic information about the RNC is configured. For details, see the Configuring the
Basic Data.
6.6.2 Procedure
Activation Procedure
Run the MML command ADD ATMTRF(CME single configuration: NodeB Configuration
Express > IUB_RNC > ATM Transport > ATM Traffic Record; CME batch modification center:not supported) to add an ATM traffic record of the UBR+ class. To add more ATM traffic
records, run this command repeatedly.
Verification Procedure
Run the MML command LST ATMTRFto query the ATM traffic configuration.
Expected result: The query result is consistent with the configuration information.
Deactivation Procedure
Run the MML command RMV ATMTRF(CME single configuration: NodeB Configuration
Express > IUB_RNC > ATM Transport > ATM Traffic Record; CME batch modification center:
not supported) to delete an ATM traffic record of the UBR+ class. To delete more ATM traffic
records, run this command repeatedly.
6.6.3 MML Command Examples
//Adding UBR+ ATM QoS Class
ADD ATMTRF: TRFX=105, ST=UBR_PLUS, UT=CELL/S, MCR=100;
//Verifying UBR+ ATM QoS Class
LST ATMTRF: TRFX=105;
//Deactivating UBR+ ATM QoS Class
RMV ATMTRF: TRFX=105;
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7ParametersTable 7-1Parameter description
Parameter ID NE MMLCommand
Feature ID Feature Name Description
IPADDR BSC6900 ADD IPOAPVC
MOD