Relay selecting method based on social characteristic in D2D relay network

A technology of relay network and social characteristics, which is applied in the field of D2D relay communication, can solve the problem of denial of service without considering the relay, and achieve the effect of high performance gain

Active Publication Date: 2017-09-26
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] Although the existing social-based D2D relay transmission research considers the impact of some social relationships on users' willingness to cooperate, it does not consider the real situation that the requested relay will deny service, even if there is a strong social relationship between users. relation

Method used

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  • Relay selecting method based on social characteristic in D2D relay network
  • Relay selecting method based on social characteristic in D2D relay network
  • Relay selecting method based on social characteristic in D2D relay network

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Embodiment Construction

[0036] The present invention is described in further detail below in conjunction with accompanying drawing:

[0037] refer to figure 1 The relay selection method based on social characteristics in the D2D relay network of the present invention is characterized in that the D2D relay network includes a cellular user, a D2D user sending end s, a D2D user receiving end d, and several The idle users of , including the following steps: select the optimal idle user as a relay based on the social relationship strength, reputation value and location of each idle user, the D2D user sending end s sends a signal to the relay, and the relay receives the D2D user sending end s The incoming signal is transmitted, and the signal sent by the D2D user sending end s is forwarded to the D2D user receiving end d.

[0038] In the first hop communication, the D2D user sender s sends a signal to the relay through the D2D link, and the D2D link is interfered by the cellular link, then the signal tran...

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Abstract

The invention discloses a relay selecting method based on a social characteristic in a D2D relay network. The method comprises the steps of acquiring position information and a relay selection range radius lmax of an idle user, and obtaining an idle user set in the relay selection range according to the position information and the relay selection range radius lmax of the idle user; when the communication time of a system is longer than or equal with a preset value, calculating an information transmission rate of each idle user in the idle user set according to a social relation strength, a credit value and a position relation of each idle user in the idle user set, and selecting the idle user with highest information transmission rate as a relay; and when the communication time of the system is lower than the preset value, calculating a product between a cooperation probability and an information transmission rate of each idle user in the idle user set according to the social relation strength, the credit value and the position relation in the idle user set, and selecting the idle user with highest product as the relay. The relay selecting method can realizes a fact that relay selection more accords with a true application scene.

Description

technical field [0001] The invention belongs to the technical field of D2D relay communication, and relates to a relay selection method based on social characteristics in a D2D relay network. Background technique [0002] The D2D relay technology can expand the communication range and improve the communication quality, and is an effective enhancement technology for D2D communication. Most current research on D2D relay communication assumes that users participate in the relay transmission altruistically. However, helping to forward data will cause energy consumption, space occupation, and may also bring security risks and many other problems. Considering these factors, selfish users may not be willing to participate in D2D relay transmission. There are also some studies addressing this issue. There are two main types of approaches: incentive mechanisms and socially aware mechanisms. The incentive mechanism is mainly to motivate users to participate in collaboration by rewar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/12H04W40/16H04W40/20H04W40/22
CPCH04W40/12H04W40/16H04W40/20H04W40/22Y02D30/70
Inventor 杜清河朱雪杰任品毅孙黎
Owner XI AN JIAOTONG UNIV
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