User scheduling method and system

Abstract

Disclosed is a user scheduling method, comprising: dividing users to be scheduled into two types, wherein the quality of a channel from a base station to users of the first type is higher than the quality of a channel from the base station to users of the second type, determining the scheduling types of various subframes in a scheduling cycle, and for a subframe used for uplink transmission, scheduling a user from uplink users for uplink transmission; for a subframe used for downlink transmission, scheduling a user from downlink users for downlink transmission; and for a subframe used for full-duplex transmission, scheduling a user from the users of the first type for downlink transmission, or scheduling a user from the users of the second type for uplink transmission. Also correspondingly disclosed is a user scheduling system. According to the present invention, by improving the existing user scheduling mechanism, same-frequency full-duplex transmission is achieved in a TDD system, thereby increasing the communication efficiency of the TDD system. Moreover, the present invention has low requirements for the interference elimination capability 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) In this way, a wireless frame is divided into 10 subframes, which are used as downlink subframes or uplink subframes, and asymmetric uplink and downlink services are matched 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 b...

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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