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Address allocation method and host base station

An allocation method and address technology, applied in wireless communication, network data management, transmission system, etc., can solve address allocation problems, do not support PGW relocation and other problems

Inactive Publication Date: 2012-12-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing standard process does not yet support the relocation of the PGW during the handover process. One of the key issues is the address allocation of the MRN when the PGW of the MRN is relocated.

Method used

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  • Address allocation method and host base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] This embodiment describes a method in which the source DeNB sends the first IP address allocation auxiliary information to the target DeNB through an X2 interface message, and the target DeNB allocates an IP address during the handover preparation process. Figure 4 The flow of this embodiment is described. In this embodiment, the source S-GW and the source P-GW of the MRN may be built in the source DeNB, or may not be located in the source DeNB, but built in the initial DeNB (initial DeNB).

[0128] Step 401: The MRN detects the signal of the target DeNB cell during the measurement process, and triggers a measurement report event to send a measurement report to the source DeNB. After the source DeNB determines that the MRN needs to be handed over to the target DeNB, it determines that there is an X2 interface with the target DeNB, And after the handover, the MRN does not need to replace the MME, the source DeNB initiates an X2 handover for the MRN, and the source DeNB ...

Embodiment 2

[0147] This embodiment describes a method in which the target DeNB obtains auxiliary IP address allocation information from the source DeNB and MME through X2 interface messages and S11 interface messages, and the target DeNB allocates IP addresses during session creation. Figure 5 The flow of this embodiment is described. In this embodiment, the source SGW and the source PGW of the MRN may be built in the source DeNB, or may not be located in the source DeNB, but built in the initial DeNB (initial DeNB).

[0148] Step 501: The MRN detects the signal of the target DeNB cell during the measurement process, and triggers a measurement report event to send a measurement report to the source DeNB. After the source DeNB determines that the MRN needs to be handed over to the target DeNB, it determines that there is an X2 interface with the target DeNB. And after the handover, the MRN does not need to replace the MME, then the source DeNB initiates an X2 handover for the MRN, and the...

Embodiment 3

[0165] This embodiment describes the method for the target DeNB to allocate an IP address during the handover preparation process in the S1 handover. Figure 6 The procedure described in this example is described. In this embodiment, the source SGW and the source PGW of the MRN may be built in the source DeNB, or may not be located in the source DeNB, but built in the initial DeNB (initial DeNB).

[0166] Step 601: The MRN detects the signal of the target DeNB cell during the measurement process, and triggers a measurement report event to send a measurement report to the source DeNB. After the source DeNB determines that the MRN needs to be handed over to the target DeNB, it determines that there is no X2 interface with the target DeNB , or the MRN needs to replace the MME after the handover, the source DeNB initiates an S1 handover for the MRN, and the source DeNB sends an S1 interface handover request (handover required) message to the source MME of the MRN, the handover req...

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Abstract

The invention discloses an address allocation method and a host base station. The method comprises the following steps that a target host base station (DeNB) of an MRN (mobile relay node) receives first IP (Internet protocol) address allocation auxiliary information sent by the source DeNB of the MRN, and the IP address is allocated for the MRN according to the first IP address allocation auxiliary information. The address allocation method and the host base station have the advantages that the address allocation problem for MRN in the switching process is solved under the re-positioning condition of a PGW(Payment Gateway) serving the MRN in the MRN switching process, and further, the service continuity of a terminal is ensured.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an address allocation method and a host base station. Background technique [0002] In the wireless relay (Wireless Relay) technology in the LTE-Advanced standard introduced by the 3GPP standard organization, the relay node (Relay Node, RN for short) provides UEs accessing its cell with functions and services similar to ordinary eNBs. Access to an eNB serving it (DeNB for short, donor base station) through a wireless interface in a manner similar to that of a common UE. With the large-scale construction and operation of high-speed railways, the demand for communication on trains continues to increase. However, because high-speed trains are affected by Doppler frequency shift, frequent cell switching, and high penetration loss of high-speed train carriages, it is difficult for the coverage of existing network base stations to meet the communication quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/06H04W36/00
CPCH04W8/26H04L61/5007
Inventor 黄莹谢峰梁爽
Owner ZTE CORP
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