Interference Steering Method in Wireless Local Area Network

Abstract

The invention discloses an interference guiding method in a wireless local area network, mainly used for solving the problem that in existing interference management technologies, a system is low in spectrum efficiency as an interference communication transmitter is large in power overhead for sending an interference management signal. The scheme of the method comprises the following steps: 1) each access point detects and shares channel state information and data information; 2) a target communication transmitter and the interference communication transmitter respectively compute pre-coding vector and a filtering vector for sending desired signals; 3) a control center computes the pre-coding vector and the power overhead of an interference guiding signal according to the pre-coding vector and the filtering vector; and 4) the access point sends the interference guiding signal according to the pre-coding vector and the power overhead acquired in the step 3), thus achieving interference guiding. According to the method provided by the invention, interference can be eliminated, power overhead of the target communication transmitter for sending the interference guiding signal can be reduced, spectrum efficiency of the system can be improved, and thus the method can be applied to wireless communication network systems.

Description

technical field [0001] The invention belongs to the technical field of communication, and further mainly relates to an interference guiding method, which can be used in wireless communication network systems such as wireless local area networks and hybrid cellular networks. Background technique [0002] The next generation wireless mobile communication network is characterized by high data transmission rate, high system capacity and interconnection of a large number of devices. The capacity of wireless networks is expected to increase 1,000-fold by 2020, with 100 billion connected devices. To meet this demand, new frequency bands exceeding 1000 MHz need to be developed to fill the gap in spectrum resources. Therefore, there is an urgent need for efficient spectrum utilization technologies, so that a large number of distributed base stations or access points can provide more diverse wireless services for ever-increasing users. [0003] However, with the increase of spectrum...

AI Technical Summary

Problems solved by technology

For IN, the transmitter achieves neutralization by sending a replica of the interference, and the generation of the neutralization signal will cause additional power overhead

In the case of power limitation, the more power IN consumes, the less power is used to transmit the desired signal, especially when the interference is strong, there will not be enough power to generate a neutralizing signal, and IN is unavailable at this time

ZFBF and ZF need to configure multiple antennas on the transmitter and receiver, in order to distinguish the desired signal and interference in the airspace, it needs to consume degrees of freedom

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