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Method for selecting optimal distributed type interference source in mobile collaborative network

A mobile collaboration, optimal technology, applied in the direction of communication interference, advanced technology, security devices, etc., can solve the problems of simple form, single target of eavesdropping interference method, etc.

Inactive Publication Date: 2012-05-02
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the shortcomings of the prior art, the present invention proposes an optimal distributed interference source selection method in the mobile cooperative network in order to solve the problem of single target and simple forms of eavesdropping interference in the mobile cooperative network in the prior art, comprehensively considering the system The safety and reliability of the system, and ensure the important indicators in the system

Method used

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  • Method for selecting optimal distributed type interference source in mobile collaborative network
  • Method for selecting optimal distributed type interference source in mobile collaborative network
  • Method for selecting optimal distributed type interference source in mobile collaborative network

Examples

Experimental program
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Embodiment 1

[0071] The scene of Embodiment 1 of the present invention is as follows image 3 As shown, there are one source node S, one destination node D and one eavesdropping node E in the network, and several candidate coordinating nodes C, and each candidate coordinating node only considers the case of interfering node J (shown as C / J in the figure) . Each node is equipped with a single antenna, and the channels between nodes are all Rayleigh fading channels with equal bandwidth and independent of each other. The transmission power of the source node is P S , the transmit power of each interfering node is P J . The scenario of Embodiment 1 can be applied to a certain hop or several hops of data transmission in a multi-hop network. In particular, when the main channel (SD channel) environment is inferior to the wiretapping channel (SE channel), the traditional method cannot realize S to D The safe communication between nodes can only rely on the introduction of relay nodes to forwar...

Embodiment 2

[0173] The scene of embodiment 2 of the present invention is as follows Figure 4 As shown, there are one source node S, one destination node D and one eavesdropping node E in the network, several candidate coordinating nodes C, and candidate coordinating nodes C have two cooperating modes at the same time: relay mode (that is, as a relay node R Cooperate) and interference mode (ie cooperate as interfering node J). Each node is equipped with a single antenna, and the channels between nodes are all Rayleigh fading channels with equal bandwidth and independent of each other. The sending power of the source node is P S , the transmit power of each coordinating node working in the interference mode is P J , the transmission power when working in relay mode is P R .

[0174] Compared with Embodiment 1, the situation considered in the scenario of Embodiment 2 is: when the source node S and the destination node D cannot communicate directly due to obstacles or the channel is in a...

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Abstract

The invention relates to the technical field of mobile communications and provides a method for selecting an optimal distributed type interference source in a mobile collaborative network. In the method, the possible states and the state transition probability of candidate collaborative nodes are obtained through periodically transmitting a training sequence and feedback information; whether a channel source node can be in direct communication with a destination node is judged, if the direct communication is available, the selection of the optimal interference node is carried out, or else, the selection of an optimal relay-interference pair is carried out; and a corresponding priority symbol value of each possible state of the collaborative nodes is calculated, and a suitable node is selected to collaborate data transmission. With the adoption of the method provided by the invention, the optimal interference source can be selected according the specific states of a channel, so as to respond to the interception of illegal nodes in the mobile collaborative network, the power consumption and the transmission error rate of the collaborative nodes are sufficiently considered at the same time that the secure communication is guaranteed, and the quality of communication is ensured.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for selecting an optimal distributed interference source in a mobile cooperative network. Background technique [0002] In recent years, wireless communication technology has developed rapidly and has gradually penetrated into all aspects of people's daily life. Massive information needs to be transmitted through wireless channels. To solve the problem of limited wireless communication spectrum resources, the industry has proposed the concept of cooperative relay network. In a cooperative relay network, multiple mobile terminals with a single antenna share the antenna to form a virtual antenna array to obtain the diversity gain effect of the MIMO (Multiple-Input Multiple-Output) system and improve the system spectrum utilization and reliability. In the cooperative relay network, the optimal one or more relay nodes are selected from multiple candidate relay nodes to u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04W40/12H04K3/00H04W12/122
CPCY02D30/70
Inventor 王莉宋梅魏翼飞满毅滕颖蕾柯腾辉张勇马跃俎云霄戴超王英赫王萍
Owner BEIJING UNIV OF POSTS & TELECOMM
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