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Multi-channel multi-address access method

An access method and multi-channel technology, which is applied in the field of multi-channel and multiple-access access using resource reservation methods, can solve the problems that channels cannot be fully utilized, cannot completely solve exposed terminals, hidden terminals and intrusive terminals, and channel waste. , achieve good communication quality and flexibility, great potential and application value, and increase the effect of bandwidth utilization

Inactive Publication Date: 2008-02-06
BEIHANG UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-channel multiple access method for the defects that the existing multiple access methods cannot completely solve the problems of exposed terminals, hidden terminals and intrusive terminals, and the channels cannot be fully utilized, and there are different degrees of channel waste. method

Method used

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Embodiment Construction

[0040] In order to solve the existing problems of hidden terminals and exposed terminals, as well as the problem of intruding terminals caused by the movement of nodes, and further reduce the transmission collision time between the sender and hidden terminals, the following embodiments provide a multi-channel multiple access method for describing For your convenience, the following provisions:

[0041] t PKT The sending time of the business packet;

[0042] t TR is the transmission time of the transmission reservation (TR) packet;

[0043] t RR is the sending time of the Reservation Response (RR) packet;

[0044] t ACK is the sending time of the acknowledgment (ACK) packet;

[0045] t p is the signal propagation delay;

[0046] t pmax is the longest signal propagation delay between any two nodes in the network;

[0047] t rt is the conversion time for sending and receiving;

[0048] t obs is the shortest channel idle observation time between when a node detects that...

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Abstract

The present invention discloses a multi-channel and multi-address access method through a plurality of embodiments, including: a node monitoring public channel, obtaining the channel occupation mode of the neighboring node according to the monitoring result; according to the channel occupation node of the neighboring node, selecting a channel which is occupied by one neighboring node as the send channel of the aforesaid node; checking or monitoring the state of the aforesaid send channel, and appointing a corresponding send channel to conduct the service packet transmission according to the check or monitor result. The multi-channel and multi-address access method provided by the embodiments in the present invention can effectively solve the problems that the prior multi-address access method can not completely solve the channel waste caused by exposing the terminal and the packet collision caused by hiding the terminal and intruding the terminal, effectively improving the channel utilization rate in the network.

Description

technical field [0001] The invention relates to a multi-channel multiple access method, in particular to a resource reservation method to implement [0002] The present invention relates to a method for adaptive multi-channel multiple access, which belongs to the field of mobile wireless communication. Background technique [0003] The multiple access (or media access control) method solves the problem of how multiple nodes or users share channel resources quickly, efficiently, fairly and reliably. At present, the channel allocation methods directly applied in mobile wireless communication networks generally adopt random access and on-demand access methods. [0004] In the multiple access method of random access, when each node shares the wireless broadcast channel in a multi-hop network structure based on carrier sensing, the problem of hidden terminals and exposed terminals appears, which greatly reduces the performance of multiple access, especially when sending When th...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04L12/56H04W48/16H04W74/00
Inventor 刘凯张军刘云
Owner BEIHANG UNIV
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