Method for achieving collaborative multipoint transmission dispatch and power distribution

Abstract

The invention discloses a method for achieving collaborative multipoint transmission dispatch and power distribution. Aiming at each PRB, the method adopts the algorithm of transmission dispatch for determining a user of a collaborative cluster and dispatch, namely, RSRP values are counted, SINR is calculated according to the RSRP values and a current condition, edge users which are served in each cell of each base station are found out, the collaborative cluster and the edge users which are served by the collaborative cluster are determined in an iterating mode, and an idle base station selects central users of the cell to conduct serving; power pre-distribution is conducted through a water-filling algorithm on each base station; a non-cooperative game is adopted in each PRB to conduct interference coordination and optimum allocation of power is achieved. The method has the advantages that a collaboration method is adjusted according to real-time dynamic conditions of the system parameters of each PRB, dispatch is flexible and adaptability is strong; by the adoption of the centralized transmission dispatch scheme, expenditure of algorithm time delay is low and real time performance is strong; due to the fact that the non-cooperative game is adopted to achieve interference coordination in CoMP, power distribution is reasonable and handling capacity of the edge users is improved.

Description

technical field [0001] The invention belongs to wireless communication transmission technology, relates to a method for realizing multi-user transmission technology, in particular to a method for realizing coordinated multi-point transmission scheduling and power allocation. Background technique [0002] In the LTE-Advanced system, although the OFDM technology effectively eliminates intra-cell interference through the orthogonality of subcarriers, in a multi-cell system with a frequency reuse factor of 1, inter-cell interference (ICI, Inter-Cell Interference) It still exists, and becomes one of the main obstacles to the further improvement of cell throughput and edge user throughput. The coordinated multipoint transmission (CoMP) scheme introduces cooperation between multiple base stations, and effectively suppresses inter-cell interference by sharing necessary information, such as channel state information, scheduling information, and data information, among coordinated bas...

AI Technical Summary

Problems solved by technology

Although this kind of cooperation is simple and easy to implement, all users in the same base station have the same corresponding cooperation cluster, so for users in different geographic locations, it may not be possible to eliminate the strongest inter-cell interference, fairness It is not guaranteed; and as the user moves, its strongest interference source will also change, and static collaboration cannot adapt to this dynamic change

In addition, the traditional method of power allocation is realized by using the water filling algorithm, which not only ignores the interference coordination between cells, but can only maximize the throughput of a single cell, and cannot guarantee the optimal throughput of the entire system

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