An Optimized Wireless Channel Negotiation Method

Abstract

The invention discloses an optimized wireless channel negotiation method. The data transmission of wireless communication nodes does not need to compete for the channel every time, and the allocated data channel resources can be fully utilized, the number of times of negotiation is reduced, and the control information on the negotiation channel is reduced. Overhead, to prevent the negotiation channel from becoming a performance bottleneck due to the large amount of control information and the high probability of collision when the network load is large. In addition, during the negotiation of the data transmission process, the data transmission requirements and data priorities of the opposite end are considered, so that the high-priority data transmission requirements of the target communication node can be met in time.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an optimized wireless channel negotiation method. Background technique [0002] Compared with traditional wireless communication networks, wireless ad hoc networks have the characteristics of fast networking, low requirements for infrastructure, and strong resistance to destruction. They are widely used in military communications, rescue and disaster relief, and intelligent transportation. [0003] Similar to the OSI model of the TCP / IP protocol stack, the underlying protocol stack of the wireless ad hoc network can also be divided into a physical layer (PHY), a medium access control layer (MAC) and a network layer (NET), among which the MAC layer is responsible for access control and wireless resource allocation. The mainstream of the MAC layer of the existing wireless ad hoc network mostly adopts the CSMA / CA competition mechanism, but under the standard CSMA / CA mechanism,...

AI Technical Summary

Problems solved by technology

The mainstream of the MAC layer of the existing wireless ad hoc network mostly adopts the CSMA / CA competition mechanism, but under the standard CSMA / CA mechanism, nodes need to re-compete for the channel every time they have data to send. When there are multiple data packets, the data of each node is sent randomly in bursts, the probability of collisions and retransmissions increases rapidly, and the effective transmission efficiency of the channel decreases

[0004] Synchronous TDD mode in the prior art: Based on the pre-divided time slot structure, communication nodes in the wireless communication network can only conduct resource negotiation in their designated exclusive time slots, and other nodes are not allowed to send during this period.

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