Pilot frequency scheduling method for multi-input multi-output system and synergetic equipment

Abstract

Provided are a pilot frequency scheduling method for a multiple-input-multiple-output system, and a cooperative device. The method comprises: determining an initial user sequence; according to the initial user sequence, conducting tabu search so as to obtain an optimized user sequence; and according to the optimized user sequence, conducting pilot frequency scheduling on UEs in L cells, wherein UEs of the same user combination belonging to the optimized user sequence in the L cells share the same section of pilot sequence. In the embodiments of the present invention, by searching for a plurality of user combinations of the L cells so as to obtain an optimized user sequence of the L cells and conducting pilot frequency scheduling on UEs of the L cells according to the optimized user sequence, a good pilot frequency scheduling effect can be obtained in the case where the algorithm complexity is relatively low, thereby taking account of the calculation overhead and comprehensive pilot frequency effect of a multiple-input-multiple-output system in balance.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a pilot scheduling method and coordination equipment for a multiple input and output system. Background technique [0002] Massive MIMO (Very Large MIMO or Massive MIMO) has gained a lot of attention in the field of wireless communication due to its unique advantages: higher multiple channel capacity, lower energy consumption, very accurate spatial discrimination, relatively cheap hardware implementation, etc. of considerable concern. [0003] In an existing reference signal indication (CSI) feedback mode, the amount of feedback increases linearly with the number of antennas. With a large increase in the number of antennas at the base station, when the number of antennas is large, the time required for feedback will be greatly increased in the channel coherence time. Therefore, channel state information is obtained mainly by exploiting channel rec...

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Problems solved by technology

[0006] If the exhaustive search method is used to traverse all possible user combinations and select the optimal user group that maximizes the system and rate, the search volume is very large, and a slight increase in the number of users and the number of cells will lead to a sharp increase in the search volume. increase, which is not feasible in practical applications

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