A Dynamic Obstacle Avoidance Method for Millimeter Wave Fronthaul Beams Based on Large-Scale Antennas

Abstract

The invention discloses a millimeter wave forward beam dynamic obstacle avoidance method based on a large-scale antenna. The method comprises the following steps: receiving RRU pilot frequency information, and obtaining a corresponding channel matrix and constructing a network topology; using a directed graph to construct a forward network topology, and obtaining a node-link incidence matrix; constructing a native conflict constraint condition, and obtaining an initialization transmission set that satisfies the native conflict constraint condition; calculating the transmission rate of each link, and judging whether all links satisfy a QoS constraint condition of link transmission; eliminating unsatisfied links and solving to obtain a maximum transmission set that satisfies the QoS constraint condition; and when detecting that the current RRU node encounters obstacles, selecting suitable RRU nodes and corresponding links from the maximum transmission set to complete a forward demand in combination with the forward demand and the node capacity surplus situation. The millimeter wave forward beam dynamic obstacle avoidance method based on the large-scale antenna provided by the invention effectively solves the problem of non line of sight transmission and improves the stability and reliability of millimeter wave transmission by taking the RRU as a relay node.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for dynamic obstacle avoidance of a millimeter wave forward beam based on a large-scale antenna. Background technique [0002] With the rapid increase of wireless traffic, the introduction of cloud technology into the radio access network (CloudRAN) has become a key means to effectively deal with large-scale traffic and provide high-quality on-demand services. The wireless fronthaul based on the millimeter wave band has flexible transmission capabilities, supports ultra-high-speed data stream transmission, and can provide variable fronthaul topologies and differentiated delay guarantees. It has become an innovative technology for CloudRAN fronthaul and has attracted widespread attention. In addition, due to the small wavelength of the millimeter wave band, the number of large-scale antennas can be deployed in a compact manner, which can further increase the...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to propose a method for dynamic obstacle avoidance of millimeter-wave forward beams based on large-scale antennas, which can provide a dynamic obstacle avoidance mechanism for millimeter-wave forward beams, so that the blocked beams can dynamically jump, which can effectively Solve the problem of millimeter wave non-line-of-sight transmission, and finally improve the stability and reliability of millimeter wave transmission

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