A high-efficiency beamforming method for ultra-high-speed wireless personal area network based on historical information

Abstract

The present invention proposes an efficient beam forming method for ultra-high-speed wireless personal area network based on historical information, which mainly solves the problems of high control overhead and long time consumption of the existing ultra-high-speed wireless personal area network beam forming method. The implementation scheme is: with the help of the beamforming historical information, the beam training frame is preferentially sent or monitored in the sector where the recorded opposite node is located; at the same time, the destination node of the data frame sends the frame according to the sequence number of the received beam training frame and the node. Using information such as time, calculate the moment when the source node of the data frame transfers to its own sector during the receiving process and sends a beam training frame to it at this moment. On the premise of ensuring the beam forming effect, the present invention can make the destination node of the data frame send less beam training frames and reduce the beam training frames sent by the source node of the data frame as a whole, shorten the time of the beam forming process, thereby reducing the control overhead and It is beneficial to shorten the transmission delay of data frames, and can be used for directional access of 60GHz and terahertz ultra-high-speed wireless personal area networks.

Description

technical field [0001] The present invention belongs to the field of using 60GHz ultra-high-speed wireless personal area network and terahertz ultra-high-speed wireless personal area network (terahertz wireless personal area networks) technology, and in particular relates to the data communication using directional antennas and beam-forming methods for sending and receiving nodes Ultra-high-speed wireless personal area network occasions. Background technique [0002] Ultra-high-speed wireless personal area network (the topological diagram is attached to the instruction manual figure 1 ) is a wireless personal area network whose highest data transmission rate can reach the Gbps level. This network can make full use of the advantages of ultra-high data rates to provide rate support for emerging high-load services. As a wireless ad hoc network, ultra-high-speed personal area networks are usually composed of dynamic links of nodes and do not depend on the existing network infra...

AI Technical Summary

Problems solved by technology

[0012] 1. According to the existing ultra-high-speed wireless personal area network-related beamforming method, each node to send a data frame (ie, the source node of the data frame) must perform a full-range (360-degree) sector scan. Sectors send beam training frames; and in the case that the node has been beamformed before and the relative direction has not changed, it is not necessary to scan each sector, so the existing full-range sector scanning operation brings redundancy. Additional control overhead and time consumption

[0013] 2. In the beam training process of the existing ultra-high-speed wireless personal area network related beamforming method, the node receiving the data frame (i.e. the data frame destination node) needs to perform the training after receiving the beam training frame sent by the data frame source node. In the subsequent period of time, multiple beam training frames are sent to the sector where the source node of the data frame is located, so that the source node of the data frame can successfully receive one of them; and in the case that the sector where the source node of the data frame is received can be accurately calculated, the data The frame destination node only needs to send a beam training frame to the data frame source node at the corresponding time, and the frame can be successfully received by the data frame source node; in this way, there is redundant control in the existing operation of sending multiple beam training frames overhead and time consumption

[0014] The above problems lead to redundancy in the control overhead and time consumption of the existing ultra-high-speed ZigBee beamforming methods, thus affecting the performance of ultra-high-speed ZigBee beamforming

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