Self-adaptation adjustment method of load balancing information interaction periodicity

Abstract

The invention discloses a self-adaptation adjustment method of load information sending periodicity, mainly solving the problems of load information delay caused by adopting a fixed periodicity for load information interaction and unnecessary overhead of signalling in an LTE-Advanced system. The invention proposes that an adjacent base station and a source base station negotiate to self-adaptively adjust resource status update sending periodicity, including the following specific steps: 1, the source base station sends a resource status request to the adjacent base station, and the adjacent base station returns a respond according to self capacity and returns load information in a fixed periodicity; 2, the adjacent base station proposes a periodicity reconfiguration request of resource status update return periodicity according to self load variation rate; 3, the source base station returns a respond according to self condition; 4, the adjacent base station returns resource status update in a new periodicity; 5, the source base station sends a resource status report stop message, and the adjacent base station returns a respond and finishes resource status report. The invention has the advantages of high load balancing successful rate and saved radio resource and is used for load information interaction in load balancing.

Description

technical field [0001] The invention relates to the technical field of mobile communication, and relates to an evolved global continental wireless access network, in particular to an adaptive adjustment mechanism of a load information sending cycle, which is used for the interaction of load information in the process of mobility load balancing. Background technique [0002] In modern cellular mobile communication systems, due to the sharp increase in the number of mobile users, hotspot cells will be generated in some public places. These hotspot cells have large service traffic, high blocking rate of new calls and high drop rate of handover calls, while traffic in non-hotspot cells is relatively small, which will lead to unbalanced load distribution of the entire system and low utilization rate of wireless resources. At this time, a part of the traffic of the hotspot cell can be transferred to the cell with a lighter load, so as to realize the load balance of the system and ...

AI Technical Summary

Problems solved by technology

[0009] If the cycle of returning load information from adjacent base stations is too long, when the load change rate of adjacent base stations is large, the load information will lag behind, and the source base station will use outdated load information to select the target cell, resulting in a decline in load balancing efficiency;

[0010] If the cycle of returning load information from adjacent base stations is too small, when the load change rate of adjacent base stations is small, the overhead of signaling interaction will be increased, wireless resources will be wasted, and the utilization rate of wireless resources will decrease.

[0011] To sum up, if the adjacent base station adopts a fixed sending cycle of resource status update information RESOURCE STATUSUPDATE, it will cause the lag of load information, reduce the efficiency of load balancing or cause waste of wireless resources, resulting in unnecessary signaling overhead

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