Uplink Heavy Data Service Requirement in 802.16n for surveillance, PPDR, and other Applications

Document Number:IEEE S802.16n-10/0074

Date Submitted:2011-01-12

Source:Ming-Tuo Zhou, Masayuki Oodo E-mail: mingtuo@nict.com.sg; moodo@nict.go.jp(Alina) Liru Lu, Xin Zhang liru@nict.com.sg; zhangxin@nict.com.sgHiroshi Harada harada@nict.go.jpNICT*<http://standards.ieee.org/faqs/affiliationFAQ.html>

Re:CfC: IEEE P802.16n SRD in GRIDMAN TG

Base Contribution:IEEE 802.16gman-10/0066r2

Purpose:To be discussed by TG802.16n

Notice:This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein.

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Abstract

• This presentation provides supporting materials to a new requirement of uplink heavy data service proposed for IEEE 802.16n in IEEE C80216_10/0066r2

Motivation

• As stated in 802.16n PAR [1], “Furthermore the target applications are associated with a wide range

of users such as public safety agencies (e.g.Police, firefighters and Emergency Medical Services), industrial and construction companies, utilities and transport (e.g. bus, rail, airport, harbor) providers and government organizations. ”

• Uplink video streaming is required in PPDR/PBB applications, e.g., to transmit disaster/accident field video to command centre.

• It is required the uplink is capable of using more bandwidth than downlink when necessary.

Video streaming is needed in PPDR and PBB Application

Calculation of Video Data Rate

• Video types– Standard DV: 720×480

– HDV 720p: 1280×720

– HDV 1080i: 1440 ×1080

• Video data rate calculation method– Data rate = W×H ×BPP ×FPS

– W is width, H is height, BPP is bit per pixel after compression, FPS is frame per second

– BPP = CD/CF, CD is color depth, e.g., 8 bit/pixel, CF is compress factor, e.g., 32:1, then BPP = 8/32 = 0.25

DV & HDV Data Rate

• DV resolution: 720×480

• HDV resolution: HDV 720p (1280×720), HDV 1080i (1440×1080)

• Codec: MPEG-4 (BPP = 0.25)

• Frames per second: 30

• Data rate:– Standard DV: 720 ×480 ×0.25 ×30 /1024 /1024 = 2.472 Mbps

– HDV 720p: 1280×720×0.25×30 /1024/1024 = 6.6 Mbps

– HDV 1080i: 1440×1080×0.25×30/1024/1024 = 11.2 Mbps

DL/UL Ratio in 802.16 standards

• 802.16-2009– Not specified

– In WiMAX, it is specified: 26:21 to 35:12

• 802.16m– The DL/UL ratio is specified: 3:5, 4:4, 5:3, 6:2, 8:0

S5S4S3S2S1S0

TDD Frame: 5ms

DLSF0(6)

ULSF3(6)

DLSF1(6)

DLSF2(5)

ULSF4(6)

ULSF5(6)

ULSF6(6)

ULSF7(6)

Superframe: 20ms

SU0 SU1 SU2 SU3

F0 F1 F2 F3

Fig. 1 Frame structure of 802.16m

802.16-2009 Uplink Data Rate – A Comparison

26:21(WiMAX)

9:38(Japanese PBB system)

Channel bandwidth

5 MHz 5 MHz

FFT size 512 1024

Frame duration 5 ms 10 ms

Modulation/coding scheme (uplink)

16QAM-CC3/4 16QAM-CC3/4

PHY OFDMA OFDMA (tile=3×4) OFDMA (modified tile=4×7)

Uplink data rate 2.9 Mbps 5.7 Mbps 7.4 Mbps

802.16m Uplink Data Rate

• Uplink data rate of 16m with DL/UL 3:5 = 6.12 Mbit/s, with other parameters:- Channel Bandwidth: 5 MHz (Japanese PBB system in 200MHz

band)

- FFT size: 512 (Frame length = 5ms)

- number of effective sub-carriers: 408

- Cyclic Prefix : 1/8 (to cover up to 10 usec-delayed wave)

– Modulation and Coding Scheme: 16QAM-CTC3/4

– Pilot Pattern (UL): left figure below (pilot occupancy: 1/6)

Uplink Rate with Modified DL/UL Ratio in 802.16m

• Same parameters used as DL/UL of 3:5, if we use lower DL/UL ratio, we can have higher uplink data rate in 802.16m (if other parameters do not change)– If DL/UL=3:5, the uplink data rate is 6.12 Mbit/s

– If DL/UL=2:6, the uplink data rate becomes 7.344 Mbit/s

– DL/UL=1:7, the uplink data rate becomes 8.568 Mbit/s

Number of uplink video streaming supported by 802.16-2009/802.16m – A Comparison (Channel is 5 MHz)

technology Standard DV (2.472Mbps)

HDV 720p (6.6Mbps)

HDV 1080i (11.2Mbps)

802.16-2009 with DL/UL of 26:21 (2.9Mbps)

1 0 0

802.16-2009 with DL/UL of 9:38 (5.7Mbps)

2 0 0

802.16-2009 with DL/UL of 9:38 and modified tile (7.4Mbps)

3 1 0

802.16m with DL/UL of 3:5 (6.12Mbps)

2 0 0

802.16m with DL/UL of 2:6 (7.34Mbps)

2 1 0

802.16m with DL/UL of 1:7 (8.57Mbps)

3 1 0

Options for Chip Manufactures

Options Advantage Disadvantage

802.16-2009 with DL/UL of 26:21 (2.9Mbps)

No change of chip design

Loss market of HDV UL support; very limited DV support

802.16-2009 with DL/UL of 9:38 (5.7Mbps)

More UL DV transmission is supported

Change of chip design may need.Loss market of HDV UL support

802.16-2009 with DL/UL of 9:38 and modified tile (7.4Mbps)

Even more UL DV support; HDV UL supported

Change of chip design is required

802.16m with DL/UL of 3:5 (6.12Mbps) UL DV transmission is supported; no need to change chip design

Loss of HV market

802.16m with DL/UL of 2:6 (7.34Mbps) Both DV and HDV are supported

May need to change IC design

802.16m with DL/UL of 1:7 (8.57Mbps)

Text proposal for 16n SRD

6.2.4 Uplink Heavy Data ServiceThe HR-Network MAC shall be able to support uplink heavy data

service for supporting uplink video steaming for surveillance, PPDR and other applications. To support this service, low downlink to uplink (DL/UL) ratio is required. For example, when channel bandwidth is 5 MHz, at least 9:38 (DL/UL ratio) in WirelessMAN-OFDMA based system or 2:6 (DL/UL ratio) in WirelessMAN-Advanced Air Interface based system is required.

Reference

• [1] IEEE 802.16gman-10/0018r2, Draft PAR and Five Criteria from Greater Reliability In Disrupted Metropolitan Area Networks (GRIDMAN) Study Group