Frequency planning method based on synergic multi-point single-user multi-input multi-output

Abstract

The invention provides a frequency layout method based on cooperating with multi-point single user multi-input and multi-output which includes steps as follows: averaging a frequency segment occupied by the subdistrict by using CoMP transmitting into three equal parts: three sectors occupy one third of the subdistrict frequency segment orderly; then dividing each sector frequence band into a CoMPSector Zone frequency band for providing service to CoMP user, and residual frequency band services the non-CoMP user by a method of using a frequency reuse factor; selecting CoMP mode participated by a virtual subdistrict according with a user transmitting ratio requirement, then distributing CoMP sector Zone frequency band size according with the transmitting requirement ratio of CoMP user and non-CoMP user, finally deciding whether adjusting or transfering to CoMP Sector Zone frequency band size or CoMP mode real time according with the measurement and feedback of the user chunnel quality. The method can reduce calculating complex degree and information alternation amount to the network carried by CoMP, ensure frequency spectrum of the whole edge user and the whole system, and increase system chunnel capacity.

Description

technical field [0001] The present invention relates to a problem of how to use network resources by using Coordinated Multipoint technology. Specifically, it relates to a method based on CoMP SU-MIMO (Coordinated Multipoint; The frequency planning method of the output) technology is used to solve the problem that the sending end of the CoMP SU-MIMO transmission needs to use the same frequency resources. This constraint makes it impossible to directly adopt the traditional planning and scheduling method. It belongs to the technical field of mobile communication. Background technique [0002] In the 3GPP RAN1#53 meeting, the coordinated multi-point transmission technology has been incorporated into the LTE-A standard. The coordinated multipoint transmission technology can bring great benefits to the center users and edge users of the cell, and can meet the requirements of LTE-A in communication capacity, coverage and spectrum efficiency. [0003] Downlink coordinated multi-...

AI Technical Summary

Problems solved by technology

[0010] (3) Different CoMP clusters use the same frequency resources, resulting in excessive inter-cluster interference, so the SINR of edge users cannot be effectively improved

[0011] (4) The resource allocation based on the existing scheme needs to exchange information between multiple cells in the cluster, and more information requires that the capability of the X2 interface must be improved to a greater extent

[0012] (5) The fixed frequency planning method cannot effectively improve the spectrum utilization efficiency: the load conditions of the central user and the edge user of each cell in the cluster are different, which will cause the existing scheme to not effectively improve the spectrum utilization efficiency

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