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Method for supporting relocation of relay node service gateway

A technology that supports relays and service gateways, applied in electrical components, wireless communications, etc., can solve the problems of restricting TAI configuration, DNS server configuration and operating burden, increasing air interface and network signaling overhead, etc., to reduce configuration and operating burden Effect

Inactive Publication Date: 2013-04-03
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Question 1: If the RN MME determines to relocate the RN S-GW by querying the DNS server with the TAI of the target cell, it is necessary to configure different TAIs for cells under the control of different DeNBs, which limits the configuration of TAIs and causes Frequent Tracking Area Update (TAU, Tracking Area Update) of RNs moving within the coverage area of ​​these DeNBs or UEs accessing DeNBs, thus increasing the signaling overhead of the air interface and the network
[0019] Question 2: If the RN MME determines the RN S-GW_T address by querying the DNS server with the TAI of the target cell, it is necessary to configure different S-GW addresses in the DNS server for the TAIs of cells controlled by different DeNBs. Due to the number of DeNBs It is relatively large and may add new operating DeNBs or reduce existing operating DeNBs, which will bring a considerable burden to the configuration and operation of the DNS server

Method used

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  • Method for supporting relocation of relay node service gateway
  • Method for supporting relocation of relay node service gateway
  • Method for supporting relocation of relay node service gateway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: RN S-GW relocation process in the case of RN X2 handover

[0074] Assuming that the RN initially accesses the network at the source DeNB (S-DeNB), the process is as follows figure 2 As shown, including the following steps:

[0075] Step 301: When the RN initially accesses, the S-DeNB sends an Initial UE Message (Initial UE Message) to the RN MME. The message includes the Relay Node Indicator IE, which is used to indicate the type of the access site is RN.

[0076] Step 302: After the RN MME receives the Initial UE Message, the RNIndicator in the message determines that the type of the accessed site is RN, and assigns the MME UE S1AP ID that can uniquely identify the RN on the S1 interface of the RN. At the same time, the RN MME records the allocated MMEUE S1AP ID and the site type corresponding to the ID as RN.

[0077] Step 303: The RN MME sends an Intial Context Setup Request (Intial Context Setup Request) message to the S-DeNB, and the message includes the al...

Embodiment 2

[0088] The second embodiment: the relocation process of the RN S-GW when the S1 handover occurs in the RN.

[0089] Assuming that the RN initially accesses the network at the S-DeNB, the process is as follows Figure 4 As shown, including the following steps:

[0090] Step 401: When the RN initially accesses, the S-DeNB sends an Initial UE Message to the RN source MME (MME_S). The message includes the Relay Node Indicator IE, which is used to indicate that the type of the access site is RN.

[0091] Step 402: After the RN MME_S receives the Initial UE Message, the RN Indicator in the message determines that the type of the accessed site is RN, and assigns the MME UE S1AP ID that can uniquely identify the RN on the S1 interface of the RN. At the same time, the RN MME_S records the allocated MME UE S1AP ID and the site type (ie RN) corresponding to the ID.

[0092] Step 403: RN MME_S sends an Intial Context Setup Request message to S-DeNB, the message includes the allocated MME UE S1AP...

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Abstract

The invention provides a method for supporting relocation of an RN (relay node) S-GW (servicing gateway). The method comprises the following steps that: A. an S-DeNB (source donor evolved node base station) sends a handover request message with an MME (mobility management entity) UE (user experience) S1 AP ID (S1 application protocol identifier) distributed for RN by an RN MME to a T-DeNB (target donor evolved node base station); B. the T-DeNB returns a handover request acknowledge message with a C-RNTI (cell radio network temporary identifier) distributed for the RN by the T-DeNB to the S-DeNB after the T-DeNB receives the handover request message; C. the S-DeNB sends the C-RNTI from the T-DeNB to the RN by using a radio resource control connection reconfiguration message; D. the RN sends a radio resource control connection reconfiguration completion message to the T-DeNB by using the C-RNTI; E. the T-DeNB determines the MME UE S1 AP ID distributed by the RN MME for the RN based on the C-RNTI and sends a path switch request message to the RN MME; and F. the RN MME determines the type of a site in switching to be the RN according to source MME UE S1 AP ID element of the message so as to determine the relocation of the RN S-GW after receiving the path switch request message.

Description

Technical field [0001] The present invention relates to the field of mobile communication technology, in particular to LTE-A technology, and in particular to a method for supporting relocation of a relay node service gateway. Background technique [0002] In the LTE-A relay network based on 3GPP Release 10, the relay node (RN, Relay Node) provided by the prior art access to the network is as follows: figure 1 As shown, including the following steps: [0003] Step 101: RN accesses the network through the base station (eNB) and accesses the RN operation and maintenance system (OAM, Operation and Maintenance) just like the user equipment (UE) accesses the external network; [0004] Step 102: RN OAM configures a donor cell list (donor cell list) for the RN; [0005] Step 103: The RN accesses the network in a certain donor cell (donor cell) in the donor cell list, and accesses it through the Packet Data Network Gateway (P-GW) function in the donor base station (DeNB) to which the donor cel...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W64/00H04W88/16
Inventor 李婷张欢陈喆潘瑜
Owner POTEVIO INFORMATION TECH