Beam allocation method, device and system for multi-user millimeter wave communication system

Abstract

The invention discloses a beam allocation method, device and system for a multi-user millimeter wave communication system, and belongs to the technical field of wireless communication. The beam allocation device includes a beam search module, an initialization selection module, a path number determination module, a single path priority determination module, a beam allocation module, a single path user beam allocation module, an adjustment update module, and a circulation termination determination module. The method makes full use of multipath information when different users communicate with a base station and performs beam allocation to users through the base station so that a maximum number of users can be served simultaneously when the base station can allocate mutually different transmission codewords to all service users, and the user rate is greatly increased.

Description

technical field [0001] The invention relates to a beam allocation method of a multi-user millimeter wave communication system, a device and a system thereof, and belongs to the technical field of wireless communication. Background technique [0002] With the popularization of mobile smart terminal devices, the existing wireless communication in frequency bands below 6 GHz can no longer meet the rapidly growing demand for data traffic. The millimeter wave frequency band (30GHz-300GHz) has become a key frequency band for indoor wireless local area networks and fifth-generation mobile communications (5G) to achieve 10Gbps throughput due to its large frequency band resource advantages, and has received extensive attention and research from experts and scholars in the industry. . In order to further improve the system throughput and support multi-stream transmission, millimeter wave communication will adopt Massive Input Massive Output (MIMO) technology. Time Division Duplexing...

AI Technical Summary

Problems solved by technology

Although this scheme takes multi-user interference into consideration, it ignores the problem that the downlink equivalent channel matrix is ​​not of rank due to the fact that the base station allocates the same codewords to different users, which in turn affects the interference cancellation effect of the digital precoding matrix.

There are also technologies that propose that by selecting users with high AoD discrimination to serve, the interference between users can be reduced, but this method limits the number of users that can be served at the same time, and the sum rate of users is greatly reduced.

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