Multiuser scheduling method, base station and user receiving device

Abstract

The invention provides a multiuser scheduling method, a base station and a user receiving device; wherein, the method comprises the following steps: determining the number of basic transmitting antennae required by each user for normal communication so as to determine the number of first configurable antennae of cyclic delay diversity transmitting antennae; obtaining an average signal-to-interference-and-noise-ratio of currently active users; comparing the average signal-to-interference-and-noise-ratio with a preset first abrupt change threshold, and classifying users with the average signal-to-interference-and-noise-ratio less than the first abrupt change threshold as a low signal-to-interference-and-noise-ratio user set; allocating low set cyclic delay samples and low set cyclic delay antennae for users in the low signal-to-interference-and-noise-ratio user set; and carrying out cyclic delay transmission diversity processing on the users in the low signal-to-interference-and-noise-ratio user set by the low set cyclic delay samples and the low set cyclic delay antennae. The technical proposal helps realize multiuser scheduling based on cyclic delay diversity technology, and is beneficial to improving communication quality by signal-to-interference-and-noise-ratio and fairness of multiuser scheduling.

Description

technical field [0001] The present invention relates to the technical field of multi-user communication, in particular to a method and device for multi-user scheduling. Background technique [0002] In a multi-user MIMO (Multiple Input Multiple Output) communication system, in addition to signal and noise, the signal received by the user will also be interfered by other user signals, and the interference of other user signals will greatly affect the quality of the received signal. The adverse effects will eventually lead to the reduction of system capacity. The multi-user MIMO scheduling strategy is to avoid interference among users as much as possible, maximize system capacity, and ensure user fairness as much as possible. [0003] Cyclic delay transmit diversity technology refers to the use of cyclic delay between different transmit antennas to transmit the same signal to obtain a certain transmit diversity gain, and the cyclic delay diversity reception technology is used...

AI Technical Summary

Problems solved by technology

Moreover, multi-user scheduling will inevitably involve user information feedback. However, the amount of information feedback in a multi-user environment is quite large. Therefore, how to reduce the amount of uplink feedback while ensuring the effectiveness of cyclic delay diversity scheduling remains to be solved technical problem

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