Mobility management method, gateway node and core network

A management method and gateway node technology, applied in mobility management methods, gateway nodes and core network fields, can solve problems such as waste of transmission resources, longer delay, and circuitous routes

Active Publication Date: 2012-08-01
射阳县兴桥红星纺织工业园管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once moved to a far away place, it is impossible to access the external network nearby
U

Method used

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  • Mobility management method, gateway node and core network
  • Mobility management method, gateway node and core network
  • Mobility management method, gateway node and core network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0272] This embodiment is based on Figure 5 The described WCDMA core network architecture describes the relocation process of the serving SRNS without an anchor GGSN. There is no data loss during the handover process. After the handover is completed, the data packets of the MS are routed through the new GGSN to reduce routing detours.

[0273] like Figure 7 As shown, the flow of the service SRNS relocation process in this embodiment includes:

[0274] Steps 701-711: Same as steps 301-311 of the existing serving SRNS relocation process.

[0275] Step 712. The new SGSN signals the original SGSN that the SRNS relocation process has been completed by sending a Forward Relocation Complete message. Step 712 and step 713 can occur simultaneously. Step 712 is consistent with step 312 of the existing process.

[0276] Step 713a The new SGSN sends an update PDP context request message (new SGSN address, SGSN TEID (tunnel endpoint identifier), negotiated QoS, etc.) to the original ...

Embodiment 2

[0306] This embodiment is based on Figure 5 Describe the WCDMA core network architecture, and describe the joint hard handover and SRNS relocation process. After the joint hard handover and SRNS relocation process is completed, the MS associates to the new SGSN and new GGSN.

[0307] Step 801: The source RNC initiates joint hard handover and SRNS relocation of the PS domain. Same as the existing joint hard handover and SRNS relocation process.

[0308] Step 802: the source RNC initiates a relocation preparation process by sending a relocation request (Relocation Required) message to the original SGSN (Old SGSN); the relocation type, reason, source cell ID, target cell ID, Source RNC to target RNC transparent container and other content. Different from step 702, here the relocation type is set to "involving UE". Same as the existing joint hard handover and SRNS relocation process.

[0309] Steps 803-807: similar to steps 703-707, same as the existing joint hard handover an...

Embodiment 3

[0328] This embodiment is based on Figure 5 The described WCDMA core network architecture describes the joint cell / URA and SRNS relocation process. After the joint cell / URA and SRNS relocation process is completed, the MS associates with the new SGSN and new GGSN.

[0329] Step 901: the terminal sends a cell update (Cell Update) message to the source RNC, or sends URA Update or Cell Update or GRA Update. Same as the existing joint cell / URA and SRNS relocation process.

[0330] Steps 902-909: similar to steps 702-709 in Embodiment 1. Same as the existing joint cell / URA and SRNS relocation process.

[0331] Step 910: The target RNC sends a cell update confirmation (Cell Update Confirm) message to the terminal, or sends a URA Update Confirm or Cell Update Confirm or GRA Update Confirm; the terminal sends a RAN Mobility Information Confirm message (RAN Mobility Information Confirm) to the target RNC . Same as the existing joint cell / URA and SRNS relocation process.

[0332] ...

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Abstract

The invention discloses a mobility management method, a gateway node and a core network. During a relocation process between serving general packet radio service (GPRS) support nodes (SGSN), when an original gateway GPRS support node (GGSN) accessed to a terminal determines that it is needed to switch a GGSN according to an update packet data protocol (PDP) context request sent by a new SGSN of the terminal, the PDP context of the terminal is pushed to a new GGSN and first address information of the new GGSN is notified to the new SGSN; the new GGSN sends downlink data sent to the terminal to the new SGSN according to the address of the new SGSN contained in the PDP context of the terminal and tunnel endpoint identifier (TEID); and the new SGSN sends uplink data of the terminal to the new GGSN according to the first address information of the new GGSN. According to the invention, a location management function is realized; subscriber identifier and locator separation of the terminal is supported; and a routing circularity problem can be solved. Moreover, consistency of an existing relocation flow will not be influenced, thereby realizing good feasibility.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobility management method, a gateway node and a core network. Background technique [0002] The existing Wideband Code Division Multiple Access (WCDMA for short) system is an important system and method for realizing service access based on the wireless WCDMA technology at present. The core network architecture of WCDMA is as follows: figure 1 As shown, it includes serving GPRS (General Packet Radio Service, general wireless packet service) node (Serving GPRS Support Node, referred to as SGSN), gateway GPRS node (Gateway GPRS Support Node, referred to as GGSN) and home user subscription register and other network elements In this paper, the Home Location Register (HLR) in 2G (second generation mobile communication technology) and the Home Subscriber Server (HSS) in 3G are collectively referred to as the Home Subscriber Register, Indicated by HLR / HSS. Since the ...

Claims

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Application Information

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IPC IPC(8): H04W40/20H04W40/24H04W40/36
CPCH04W36/0033
Inventor 沈炯骆文孙默
Owner 射阳县兴桥红星纺织工业园管理有限公司
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