A user scheduling method and system

Abstract

The invention discloses a user scheduling method, comprising: dividing the users to be scheduled into two categories, wherein the channel quality of the base station to the first category of users is higher than the channel quality of the second category of users, and determining the scheduling period The scheduling type of each subframe in the subframe, for subframes used for uplink transmission, users are scheduled from uplink users for uplink transmission; for subframes used for downlink transmission, users are scheduled from downlink users for downlink transmission; In the subframe of duplex transmission, users of the first type of users are scheduled for downlink transmission, or users of the second type of users are scheduled for uplink transmission. The invention also correspondingly discloses a user scheduling system. The present invention realizes the same-frequency full-duplex transmission in the TDD system by improving the existing user scheduling mechanism, thereby improving the communication efficiency of the TDD system, and the present invention has lower requirements on the interference elimination ability of the base station.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a user scheduling method and system. Background technique [0002] Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) communication system and Time Division Long Term Evolution (TD-LTE) communication system adopt Time Division Duplexing (TDD ) mode, and divide a wireless frame into 10 subframes, which are used as downlink subframes or uplink subframes, and match asymmetric uplink and downlink services by configuring different numbers of downlink subframes and uplink subframes. [0003] With the rapid growth of mobile Internet traffic, the capacity and coverage problems of TDD systems (especially hotspots and indoors) are becoming more and more prominent. Not only does it need to design a more flexible uplink and downlink subframe configuration mechanism to match the dynamic characteristics of business uplink and downlink, but also needs to be further im...

AI Technical Summary

Problems solved by technology

[0007] 1. For two users with full-duplex transmission at the same frequency as the base station, one sends an uplink signal and the other receives a downlink signal. In this way, the uplink signal will interfere with the downlink signal received by the other user, and the existing multi-user scheduling mechanism cannot Estimate the interference between two users, resulting in the interference cannot be avoided or eliminated, which will cause another user to fail to receive downlink data, unable to achieve full-duplex transmission on the same frequency, and affect the communication efficiency of the TDD system;

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