Selection method of mobile management entity in relay system

Abstract

The invention discloses a selection method of a mobile management entity in a relay system, mainly solving the problem that the relay in the prior art can not correctly select a mobile management entity. The method comprises the following steps: 1) a relay or a common user sends a wireless resource control connection request signalling to a base station; 2) the base station sends a wireless resource control connection building signalling to the relay or the common user; 3) the relay or the common user sends a wireless resource control building-finishing signalling to the base station to confirm that the connection is built; 4) the mobile management entity sends an RelayNodeSupport signalling to the base station to indicate whether the base station supports the relay or not; and 5) the base station accesses the selection of the mobile management entity by the relay or the common user. The invention not only can cause the equipment of different operators to mutually adapt, the selectionof the mobile management entity is more flexible, and the invention can be used for relay access process in the third-generation mobile communication technology.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a method for selecting a mobility management entity in a relay system. Background technique [0002] Due to the impact of terrain and emergencies in modern communication, users in a certain area of ​​the cell often cannot have good communication services. For this reason, relays are introduced to solve this problem. The deployment of relays increases the system capacity of the coverage area, and can cover areas that cannot receive base station signals due to terrain restrictions, improving call quality. Since the relay can be used not only as an ordinary user but also as a base station, the introduction of the relay also brings about many problems, among which the selection of the mobility management entity is a more prominent one. [0003] The relay has its specific mobile management entity (Mobile Management Entity, MME) to serve it. This kind of mobile management entity ...

AI Technical Summary

Problems solved by technology

[0008] The biggest disadvantage of this relay pre-configuration method is that it does not have the adaptability between different operators' equipment and the flexibility of the base station to select the mobility management entity

The relay and the core network in the actual network do not belong to the same operator. Since the relay cannot obtain the configuration information about the core network in advance, it cannot automatically configure a suitable mobility management entity for the relay, resulting in The entry process cannot proceed

In addition, because the mobility management entity to be accessed is selected before the relay accesses the system, the flexibility of the base station to select the mobility management entity is lost

When the MME pre-configured by the relay is already in an overloaded state, the relay has already selected the overloaded MME to serve it, so the base station cannot re-select a new one for the accessed relay according to the actual situation. It is served by mobility management entities, and load balancing among mobility management entities cannot be achieved

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