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Out-degree computing method and device, and method and system for selecting new relay

A computing method and computing device technology, applied in the field of communications, can solve the problems of increasing relays and increasing hidden dangers of communication network security, and achieve the effect of improving security connectivity

Active Publication Date: 2016-09-07
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention provides an out-degree calculation method and its device, a new relay selection method and its system, which at least partially solve the problem of increasing the security risks of the communication network caused by the addition of relays in the prior art

Method used

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  • Out-degree computing method and device, and method and system for selecting new relay
  • Out-degree computing method and device, and method and system for selecting new relay
  • Out-degree computing method and device, and method and system for selecting new relay

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Embodiment 1

[0047] figure 1 It is a flowchart of an out-degree calculation method provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the out-degree calculation method includes:

[0048] Step 1001. Calculate the first normalized probability of each user within the preset first area.

[0049] Step 1002, calculate the first eavesdropping probability of all eavesdroppers within the first circle, the center of the first circle is the first user, and the radius of the first circle is the distance between the first user and the first relay .

[0050] Step 1003: Calculate the out-degree of the first user corresponding to the first relay according to the first normalized probability and the first eavesdropping probability.

[0051] In this embodiment, the step of calculating the first normalized probability of each user within the preset first area includes: calculating the first distribution probability of the user according to a two-dimensional Gaussian function; ...

Embodiment 2

[0071] This embodiment provides a method for selecting a new relay, including: calculating the out-degrees of all relays according to the out-degree calculation method provided in Embodiment 1; selecting the interrupt with the largest absolute value of the out-degree as the new relay. For the out-degree calculation method, refer to the description of Embodiment 1 for specific content, and details are not repeated here.

[0072] see figure 2 , this embodiment calculates user R 2 Corresponding to the newly added relay R 4 out degree E 24 and user R 3 Corresponding to the newly added relay R 4 out degree E 34 . According to out degree E 24 and out degree E 34 Calculate the new relay R 4 out degree E 4 , where E 4 =E 14 +E 24 +E 34 . Then, this embodiment uses the above method to calculate the newly added relay R 5 , add relay R 6 out degree E 5 and out degree E 6 . Finally, compare E 4 ,E 5 and E 6 The size of the absolute value of , and finally select the...

Embodiment 3

[0075] image 3 It is a schematic structural diagram of an out-degree calculation device provided by Embodiment 3 of the present invention. Such as image 3 As shown, the out-degree calculation device includes a first calculation unit 101 , a second calculation unit 102 and a third calculation unit 103 . The first calculation unit 101 calculates a first normalized probability of each user within a preset first area. The second calculation unit 102 calculates the first eavesdropping probability of all eavesdroppers within the first circle, the center of the first circle is the first user, and the radius of the first circle is the distance between the first user and the first relay. distance. The third calculation unit 103 calculates the out-degree of the first user corresponding to the first relay according to the first normalized probability and the first eavesdropping probability.

[0076] In this embodiment, the first calculation unit includes a first calculation module,...

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Abstract

The invention discloses an out-degree computing method and device, and a method and a system for selecting a new relay. The out-degree computing method comprises the following steps of computing a first normalization probability of each user in a preset first area; computing a first eavesdropping probability of all eavesdroppers in a first circle, wherein the center of the first circle is a first user and the radius of the first circle is a distance between the first user and a first relay; and computing out-degree of the first user, which is corresponding to the first relay, according to the first normalization probability and the first eavesdropping probability. According to the technical scheme provided by the invention, the new relay is selected according to a security figure, so that the secure connectivity of the new relay about the user can be guaranteed. In addition, the technical scheme provided by the invention not only considers the secure connectivity of the user and the new relay, but considers that the emergency of the user needs to conform to probability distribution, so that the secure connectivity of the user is further improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an out-degree calculation method and its device, a new relay selection method and its system. Background technique [0002] The development direction of the future access network is globalization, integration and personalization, so how to improve the speed and coverage of the access network is a problem that must be solved. In order to solve the above problems, the prior art introduces a relay-assisted communication system. However, after the relay is added, the channels of the communication network increase, resulting in more opportunities for eavesdroppers, which increases the security risks of the communication network. Contents of the invention [0003] In order to solve the above problems, the present invention provides an out-degree calculation method and its device, a new relay selection method and its system, which at least partially solve the problem o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06
CPCH04L41/14H04L41/147H04L63/1441
Inventor 程刚陈广泉
Owner CHINA UNITED NETWORK COMM GRP CO LTD