Paging

Paging Message Type 1

"Or"

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Paging includes CN orignated paging and UTRAN originated paging

The CN originated paging precedure: is used to establish a signaling connection. It is divided into co-ordination paging and non co-ordination paging. The CN indicates in the RANAP paging message whether the RNC shall perform the UTRAN co-ordination paging-Co-ordination paging, the RNC shall check whether the UE has other CN domain signaling connections besides the paging domain connection. If so and the UE is in Cell_DCH or Cell_FACH state, the paging message shall be transmitted on the already connected DCCH on the radio interface. if so and the UE is in Cell_PCH or URA_PCH state,the paging message shall be transmitted on the PCCH on the radio interface. If no, the paging message shall be transmitted on the PCCH.-Non-co-ordinating paging, the RNC need not check whether the UE has other CN domain signaling connectionsbesides the paging domain connection but directly transmit the paging message on the PCCH in the CN specified paging area.

The UTRAN orignated paing : The UTRAN may initiate paging for a UE in Cell_PCH or URA_PCH state to trgiger a cell update procedure to enable the transition to Cell_FACH state. In additon,the UTRAN may initiate paging fora UE to trigger reading of updated system information.

For a UE in idle mode or in CELL_PCH or URA_PCH state, the RNC initiates the paging procedure by transmittinga PAGING TYPE 1 message on the PCCH. For a UE in CELL_FACH or CELL_DCH state, the RNC initiates the paging procedure by transmitting a PAGING TYPE 2 message on the DCCH

In UTRAN, we distinguish two different types of paging, depending on the existence of a RL connection between UE and UTRAN.

Paging Type 1 -The RRC message Paging Type 1 is used, when a paging message has to be transmitted to a UE, which is either in the RRC idle mode, or in the RRC connected mode sub-states CELL_PCH or URA_PCH. There are several reasons, why this paging message type is initiated.

-Upper layers request the setup of an RRC signalling connection. This may be the cause, when a paging message from the CN has to be forwarded to the UE. . In this case, the UE adds the IE Paging Cause to the the paging message. Higher layers may also initiate paging, when user data has to be transmitted on an existing ps connection (PMM-IDLE or PMM-CONNECTED). UTRAN has to page theUEs in the CELL_PCH and URA_PCH sub-states to establish a connection before forwarding the user data.

-UTRAN wants to trigger a cell update for UEs in the CELL_PCH or URA_PCH sub-state. -UTRAN wants to notify UEs in the RRC idle mode and in the RRC connected mode CELL_PCH and URA_PCH about system information changes.

The UE monitors the paging channels (S-CCPCHs carrying PCCH) on all paging occasions. If the UE receives a paging message, it reads the UE identity to check, whether it is the receiver of the message. If so, it returns a paging response. The UTRAN may repeat the transmission of a PAGING TYPE 1 message to a UE on several paging occasions message on an appropriate paging occasion on the to increase the probability of proper reception of a page

Paging Type 2- This RRC message is used, when the UE is in the CELL_DCH or CELL_FACH state, i.e., when at least dedicated control channel resources were allocated to the UE. One example: The user is serving in the Internet, and due to the high download, the RNC has allocated one DDCH and one DCCH to the user. Consequently, a connection between the UE and the 3G-SGSN exists, and between the two network elements, dedicated transmission resources are available for the user. While the subscriber is serving, he receives a call. The 3G-MSC is sending a paging message to all RNCs, which participate in the LA where the UE is registered. This paging message is received by a RNC, which is currently serving the UE. It then uses the existing DCCH to forward thepaging request to the UE. Therefore, Paging Type 2 is often called dedicated paging.

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Paging Message Type 2 Click to return to main page

Paging Paging includes CN orignated paging and UTRAN originated paging

The CN originated paging precedure: is used to establish a signaling connection. It is divided into co-ordination paging and non co-ordination paging. The CN indicates in the RANAP paging message whether the RNC shall perform the UTRAN co-ordination paging-Co-ordination paging, the RNC shall check whether the UE has other CN domain signaling connections besides the paging domain connection. If so and the UE is in Cell_DCH or Cell_FACH state, the paging message shall be transmitted on the already connected DCCH on the radio interface. if so and the UE is in Cell_PCH or URA_PCH state,the paging message shall be transmitted on the PCCH on the radio interface. If no, the paging message shall be transmitted on the PCCH.-Non-co-ordinating paging, the RNC need not check whether the UE has other CN domain signaling connectionsbesides the paging domain connection but directly transmit the paging message on the PCCH in the CN specified paging area.

The UTRAN orignated paing : The UTRAN may initiate paging for a UE in Cell_PCH or URA_PCH state to trgiger a cell update procedure to enable the transition to Cell_FACH state. In additon,the UTRAN may initiate paging fora UE to trigger reading of updated system information.

For a UE in idle mode or in CELL_PCH or URA_PCH state, the RNC initiates the paging procedure by transmittinga PAGING TYPE 1 message on the PCCH. For a UE in CELL_FACH or CELL_DCH state, the RNC initiates the paging procedure by transmitting a PAGING TYPE 2 message on the DCCH

In UTRAN, we distinguish two different types of paging, depending on the existence of a RL connection between UE and UTRAN.

-The RRC message Paging Type 1 is used, when a paging message has to be transmitted to a UE, which is either in the RRC idle mode, or in the RRC connected mode sub-states . There are several reasons, why this paging message type is initiated.

-Upper layers request the setup of an RRC signalling connection. This may be the cause, when a paging message from the CN has to be forwarded to the UE. . In this case, the UE adds the IE Paging Cause to the the paging message. Higher layers may also initiate paging, when user data has to be transmitted on an existing ps connection (PMM-IDLE or PMM-CONNECTED). UTRAN has to page theUEs in the CELL_PCH and URA_PCH sub-states to establish a connection before forwarding the user data.

-UTRAN wants to notify UEs in the RRC idle mode and in the RRC connected mode CELL_PCH and URA_PCH about system information changes.

The UE monitors the paging channels (S-CCPCHs carrying PCCH) on all paging occasions. If the UE receives a paging message, it reads the UE identity to check, whether it is the receiver of the The UTRAN may repeat the transmission of a PAGING TYPE 1 message to a UE on several paging occasions message on an appropriate paging

CELL_DCH or CELL_FACH state, i.e., when at least dedicated control channel resources were allocated to the UE. One example: The user is serving in the Internet, and due to the high download, the RNC has allocated one DDCH and one DCCH to the user. Consequently, a connection between the UE and the 3G-SGSN exists, and between the two network elements, dedicated transmission resources are available for the user. While the subscriber is serving, he receives a call. The 3G-MSC is sending a paging message to all RNCs, which participate in the LA where the UE is registered. This paging message is received by a RNC, which is currently serving the UE. It then uses the existing DCCH to forward the

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