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Hidden node concurrent receiving method based on busy tone for removing ACK (acknowledgement character) frame interference

A technology of hidden nodes and busy tone, applied in the direction of network traffic/resource management, electrical components, wireless communication, etc., can solve the problem that hidden nodes cannot receive concurrently, and achieve the effect of improving spatial reuse and network throughput

Inactive Publication Date: 2012-06-13
XIDIAN UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to solve the shortcoming that hidden nodes cannot receive concurrently in the wireless Ad hoc network, on the basis of the existing IEEE802. Reusability and throughput of network space

Method used

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  • Hidden node concurrent receiving method based on busy tone for removing ACK (acknowledgement character) frame interference
  • Hidden node concurrent receiving method based on busy tone for removing ACK (acknowledgement character) frame interference
  • Hidden node concurrent receiving method based on busy tone for removing ACK (acknowledgement character) frame interference

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Embodiment Construction

[0056] In order to make the purpose and technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] refer to figure 1 , the technical principle of the present invention is as follows:

[0058] Suppose the communication between A and B is the main link process, and the communication between C and D is the secondary link process. After the RTS / CTS handshake between node A and node B succeeds, node C and node F receive the CTS of node C, determine that it is a hidden node, at this time, node C receives the RTS frame of node D, node C replies a continuous out-of-band busy tone signal to node D, node D receives the busy tone signal of node C, and knows that node C is able to receive The hidden node of the data frame, node D sends a data frame to node C, and after receiving the data frame, node C continues to reply to node D with a continuous out-of-band busy tone signal. ...

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Abstract

The invention discloses a hidden node concurrent receiving method based on a busy tone for removing an ACK (acknowledgement character) frame interference, and mainly solves the problem that a hidden node cannot be used for concurrent communication in the prior art. During a communication process of a primary link, a neighbor node per se can be determined to be the hidden node when a CTS (clear to send) frame is received by the neighbor node; if an RTS (ready to send) frame is sent to the hidden node at the moment, a busy tone sending / receiving module in a starting system sends a continuous busy tone signal to a sending node of the hidden node for noticing the sending node to send a data frame, and the continuous busy tone signal can be replied to the sending node after the data frame is completely received by the hidden node; and whether the hidden node is interfered by an ACK frame or not during a data receiving process can be determined by the hidden node according to the ACK frame obtained from the CTS frame information, the removing for the ACK frame can be processed if the hidden node is interfered by the ACK frame, and the removing for the ACK frame is not needed to be processed if not. According to the invention, since the receiving for the data frame of the hidden node is realized, the concurrent degree of a network is increased, thus the throughput of the network is increased, and the hidden node concurrent receiving method can be used for a wireless Ad hoc network.

Description

technical field [0001] The invention relates to the field of wireless communication networks, in particular to a problem of realizing concurrent reception of data frames by hidden nodes by using busy tone and ACK frame interference elimination, which is used to solve the problem of hidden nodes in wireless Ad hoc networks and improve the concurrency of communication. Background technique [0002] With the development of wireless communication technology and the popularization of wireless communication applications, wireless Ad hoc networks are more and more widely used due to the characteristics of no center, temporary self-organization, and distributed control. In wireless Ad hoc networks, the medium interface The quality of the ingress control protocol directly affects performance indicators such as network throughput and delay. How to solve the problem of hidden nodes and exposed nodes has become a key issue to improve network performance. [0003] A hidden node is a node...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W24/02
Inventor 姚明旿赵孟磊邱智亮王磊张海英刘吉龙
Owner XIDIAN UNIV
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