Method for leading access point to be mapped to district, device and system

Abstract

The embodiment of the invention discloses a method for leading an access point to be mapped to a district, comprising the following steps: one access point is determined for providing service for different terminals, and the different terminals are positioned at the same area or different areas; multiple carrier waves are distributed for the access point; the mapping relation of the carrier waves and the district of the access point is built, and the access point is mapped to the same district or different districts by multiple carrier waves. The embodiment of the invention can lead the access points which are based on the same carrier wave at different districts to provide service for the same terminal, and the coordination among the districts is converted into the coordination in the district, thereby reducing the signaling expenses and reducing the complexity for coordinating the transmission and receiving of the multiple points.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and system for mapping an access point to a cell in a mobile communication system. Background technique [0002] As a substitute for the third-generation mobile communication system (such as WCDMA system) and the third-generation mobile communication system (such as LTE R8 system, UMB system), the fourth-generation mobile communication system can provide higher peak user throughput and average user throughput. rate and edge user throughput, giving users a better data transmission experience. As one of the important key enabling technologies of the fourth-generation mobile communication system, coordinated multi-point transmission technology plays an irreplaceable role in greatly improving spectrum efficiency. [0003] Coordinated multipoint transmission technology means that multiple access points (APs, AccessPoints) geographically separat...

AI Technical Summary

Problems solved by technology

[0005] However, if multiple access points serving the same or multiple users at the same time belong to different base stations, for example, access point 5 serving terminal 3 belongs to base station 2, and access point 5 serving terminal 3 7 and access point 9 belong to base station 3. Due to the limitation of the interface between base stations (generally speaking, there are only interfaces with large delay and low capacity between base stations, such as X2 interface, figure 1 Indicated by double solid lines in ), real-time data sharing between base stations cannot be realized. In this case, dynamic coordination is difficult to achieve, but static or semi-static coordinated scheduling and interference management are still feasible, such as coordinated beam Forming plan, etc.

[0006] In the related coordinated multipoint transmission technology, because the signal of the user at the edge of the cell suffers from large-scale fading, the useful signal fades seriously, and at the same time suffers from strong inter-cell interference, the data rate of the user at the edge of the cell is relatively low. Low, to solve this problem, a terminal-centric access point selection method is adopted, which requires multi-cell scheduling coordination and / or joint data transmission

[0007] In the process of implementing the present invention, the inventors found that there are at least the following problems in related technologies: when scheduling coordination involving multiple cells, scheduling coordination between cells requires more signaling overhead than intra-cell scheduling coordination for support; Multi-point joint reception is also more complicated than multi-point joint reception in the uplink cell, resulting in higher complexity of transmission / reception processing, resulting in increased power consumption and increased costs

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