Mobile relay node path optimization method and device

Abstract

The invention provides a mobile relay node (RN) path optimization method. The method comprises steps: a target DeNB receives a data path connection establishment request and path optimization instruction information sent by an RN; the target DeNB sends a local PGW address, the data path connection establishment request and path optimization instruction information to an MME accessed by the RN and an X2 interface address and RN identification of an initial DeNB are acquired; the target DeNB acquires context of UE under service of the RN from the initial DeNB via the X2 interface and bears the UE data in the data path between the RN and the target DeNB. According to the above technical scheme of the invention, through optimizing the data transmission path, time delay of UE data transmission under the mobile relay service can be reduced, better service is provided for valuable services, user experience is enhanced, the network throughput and the transmission cost can be reduced, maximum utilization of operator network resources can be realized, and load among DeNBs can be shared.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular, the present invention relates to a method and equipment for optimizing a path of a mobile relay node. Background technique [0002] figure 1 It is a schematic diagram of the existing LTE structure supporting relay or relay node (RN), such as figure 1 As shown, in the wireless access network of the LTE system, the radio resource management entity includes a macro base station (eNB) 101 and an RN102, and the RN102 accesses the core network through another macro base station DeNB103. Among them, the eNB101 is connected through the X2 interface, and each eNB is respectively connected with the Mobility Management Entity (MME) and the serving network management (S-GW) 104 in the core network through the S1 interface; the RN102 is connected to the DeNB103 through the Un interface. DeNB103 provides an X2 proxy (proxy) function between RN102 and other eNBs. DeNB103 p...

AI Technical Summary

Problems solved by technology

This greatly affects the UE's service experience, and when the delay increases to a certain extent, it will also cause service interruption

In addition, the initial Relay GW remains unchanged, and all DeNBs are required to be connected in pairs. The target DeNB accessed by the RN needs to establish a bearer connection with the initial DeNBs that are different from multiple UEs, which occupies a large amount of transmission resources.

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