Resource distribution method in LTE uplink multi-user virtual MIMO system and base station

Abstract

The present invention provides a resource distribution method in an LTE uplink multi-user virtual MIMO (Multiple-Input Multiple-Output) system and a base station. The method comprises the steps of: determining whether current utilization rates of uplink physical resource blocks of a cell which has accessed new user equipment (UE) are located in a preset range or not; if yes, estimating a first uplink rate obtained by the UE after allocation of residual physical resource blocks of the cell according to TBS (Transmission Block Size) indexes of the UE and the number of the residual physical resource blocks of the cell; estimating uplink rates of the UE after the UE and different user equipments use identical physical resource blocks according TBS indexes of the UE obtained after the UE and the different user equipments with allocated physical resource blocks use identical physical resource blocks and the number of the residual physical resource blocks of the cell; selecting a user equipment matched with the UE according to the uplink rates and the physical resource occupancy rates of the user equipments after the UE and the different user equipments use identical physical resource blocks; and distributing physical resource blocks for the UE according to a comparison result of the uplink rates corresponding to the selected user equipment and the first uplink rate for data transmission.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a resource allocation method and a base station in an LTE uplink multi-user virtual MIMO system. Background technique [0002] The existing multi-user virtual MIMO (Multiple-Input Multiple-Output) technology refers to that the base station uses multiple receiving antennas to perform weighted and combined operations on the signals on each receiving antenna with different weights to obtain different user The multi-user detection is performed on the user equipment multiplexed with the same time-frequency resource by multiple estimated values ​​of the signal of the equipment, and the effect that multiple user equipment transmits data on the same time-frequency resource is realized. Multi-user virtual MIMO not only obtains diversity gain and array gain like uplink receive diversity, but also obtains multiplexing gain brought by multi-user equipment using the sam...

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Problems solved by technology

[0003] Existing multi-user virtual MIMO technology solutions do not fully consider the efficient use of limited air interface Physical Resource Blocks (PRBs) when multiplexing the same time-frequency resources, making the multi-user virtual MIMO technology The application effect of the solution in the TD-LTE network with limited uplink air interface is limited

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