Ultrahigh-speed wireless personal area network high-efficiency wave beam forming method based on historical information

Abstract

The invention provides an ultrahigh-speed wireless personal area network high-efficiency wave beam forming method based on historical information, which mainly settles problems of high control expenditure and long time consumption in an existing ultrahigh-speed wireless personal area network wave beam forming method. The method comprises the steps of by means of historical information in wave beamforming, preferably transmitting a wave beam training frame in a sector with a recorded opposite-side node; and furthermore, calculating the time of turning to a sector with a data frame source nodein a receiving process by a data frame target node according to information such as received wave beam training frame sequence number and frame transmission time by the node. According to the method of the invention, under a precondition that the wave form shaping effect is ensured, the wave beam training frames transmitted by the data frame target node are reduced and furthermore the wave beam training frames transmitted by the data frame source node are integrally reduced, thereby shortening time consumption in a wave beam forming process, reducing control expenditure and shortening data frame transmission delay. The ultrahigh-speed wireless personal area network high-efficiency wave beam forming method can be used for directional accessing of 60GHz and tera-hertz ultrahigh-speed wireless personal area network.

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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