Method and equipment for paging terminal under mobile relay

Abstract

The invention provides a method for paging a terminal under a mobile relay. The method comprises the following steps that a core network node acquires new position information of an RN relay node; andan MME accessed by the UE acquires the location information of the RN from the core network node, determines a paging range for paging the UE, and initiates paging to the UE within the paging range.On the other hand, the embodiment of the invention also provides network side equipment. According to the scheme provided by the invention, the paging range can be reduced, the waste of air interfaceresources is avoided, idle UE under the RN can be ensured to be rapidly and directionally paged, and meanwhile, the paged UE can be ensured to normally access a service. According to the scheme provided by the invention, an existing system is slightly changed, the compatibility of the system is not influenced, and the implementation is simple and efficient.

Description

[0001] This application is a divisional application of an invention patent application with the application number 2012104951562 and the invention title "Method and device for paging terminals under mobile relay". technical field [0002] The present invention relates to the technical field of mobile communication, in particular, the present invention relates to a method and equipment for paging a terminal under a mobile relay. Background technique [0003] figure 1 It is a schematic diagram of the existing LTE structure supporting RN (Relay Node, relay or relay node), such as figure 1 As shown, in the wireless access network of the LTE system, the radio resource management entity includes eNB macro base station 101 and RN102, and 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 to the MME (Mobility Management Entity, mobile management entity) and ...

AI Technical Summary

Problems solved by technology

In the RN system architecture, such as figure 2 As shown, all the control and bearer of the RN are terminated at the IP layer of the DeNB protocol stack, that is, the MME-UE accessed by the idle UE cannot directly find the RN according to the address of the RN, and cannot determine the DeNB accessed by the RN

When an idle UE needs to be paged, since the MME-UE neither knows the current exact location of the UE nor the location of the RN that the UE accesses, it can only send a paging request to all DeNBs that the RN can pass along the line. Some railway lines span multiple cities and provinces, and there are a lot of DeNBs on the backhaul network along the line. All of them are paging, which is a great waste of paging resources, because the RN connected by the UE can only be connected to one DeNB at the same time, and all sending Paging to UE triggered by other DeNBs is a waste of resources

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