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Method for solving heterogeneous point AdHoc network concealed terminal

A network, heterogeneous technology, applied in data exchange networks, devices that provide special services in branch offices, and error prevention/detection using return channels, which can solve problems such as CTS/ACK cannot be returned.

Inactive Publication Date: 2010-11-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the DATA is received correctly, the ACK is returned through the route, thereby completely solving the problem of hidden terminals of heterogeneous points and the problem that CTS / ACK cannot be returned, and improving the throughput of the MAC layer

Method used

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  • Method for solving heterogeneous point AdHoc network concealed terminal
  • Method for solving heterogeneous point AdHoc network concealed terminal
  • Method for solving heterogeneous point AdHoc network concealed terminal

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Abstract

The invention discloses a method of solving heterogeneous point AdHoc network hidden terminal. The invention allocates two transmitting interfaces at the network layer for each node, works on two non-interfering channels and by using the advantages of high performance node to cause each node to form a larger perception area; on the MAC layer, the invention adopts the method of cross-layer design and applies the topology information of the surround nodes perceived by the network layer and uses the shortest path algorithm to solve route of multihop returning CTS and ACK and multicast CTS to thehidden terminal to prevent from accessing to the channel. The invention designs the strict program to finally solve the problem of hidden terminal of the heterogeneous point and no return of CTS / ACK.

Description

A Method to Solve the Hidden Terminal of Heterogeneous Point AdHoc Network technical field The invention belongs to heterogeneous point wireless mobile self-organizing network (AdHoc network), in particular to a cross-layer (routing layer and MAC layer) solution to the problem of MAC layer hidden terminal and CTS / ACK unable to return problem in heterogeneous point AdHoc network. Background technique The heterogeneous point hidden terminal problem refers to that in the heterogeneous point AdHoc network, due to the different transmission power, when the high-power node sends RTS (Request to Send) at the MAC layer (media access layer) to reserve a channel for the low-power node, the CTS (CleartoSend) of the low-power node ) cannot block some B nodes that can interfere with this communication and cause data packet conflicts. The problem of hidden terminals at heterogeneous points will lead to a large number of retransmissions and discards of MAC layer frames, which reduces the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L1/16H04L12/28H04L12/18H04L45/02
Inventor 杨新宇杨树森杨慧杰赵鹏黄钺峰
Owner XI AN JIAOTONG UNIV
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