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A D2D communication mode selection method based on social perception

A technology of communication mode and calculation method, applied in the field of cellular network communication, to achieve the effect of improving spectrum utilization, reducing interference between users, and improving user utility

Active Publication Date: 2020-11-03
NANJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many problems in user pairing and mode selection between content provider users and content demand provider users in D2D communication in cellular networks at present.

Method used

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  • A D2D communication mode selection method based on social perception
  • A D2D communication mode selection method based on social perception
  • A D2D communication mode selection method based on social perception

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 , figure 2 As shown, the described method for selecting a D2D communication mode based on social perception includes the following steps:

[0027] Step 1: First calculate the social connection strength between content providing users and content demanding users;

[0028] Wherein, the specific calculation method of the social connection strength between the content providing user and the content demanding user includes the following steps:

[0029] Step (1): Mark user preferences according to keywords, such as: sports, technology, entertainment, etc., identify user preferences by designing keywords, obtain the preference vector of content-providing users and the preference vector of content-demanding users, and provide user preferences through content The cosine similarity between the vector and the preference vector ...

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Abstract

The invention discloses a D2D communication mode selecting method based on social sensing. The method comprises the steps that step one, the social connecting strength between a content providing userand a content demanding user is firstly calculated; step two, the theoretical transmission rate between the content providing user and the content demanding user is calculated; step three, a user utility matrix is calculated according to the social connecting strength and the theoretical transmission rate; step four, user matching is conducted taking user total utility maximization as the goal according to the user utility matrix obtained in step three, and if the content demanding user is matched with a base station, contents are obtained from the base station by the content demanding user through a cellular mode; if the content demanding user is matched with the content providing user, the content demanding user uses a D2D mode to obtain the contents from the content providing user. Themethod has the advantage that problems of user matching and mode selecting between multiple content providing users and content demanding users can be effectively solved.

Description

technical field [0001] The present invention relates to the technical field of cellular network communication, in particular to a method for selecting a D2D communication mode based on social awareness. Background technique [0002] With the rapid development of wireless communication technology, the traffic volume of cellular systems has exploded, and the contradiction between the increasing user demand and the scarcity of spectrum resources has become increasingly fierce. Therefore, it is crucial to improve the utilization of available spectrum resources. The 3rd Generation Partnership Project (3GPP) has made proposals to develop device-to-device (D2D) communication in Long Term Evolution-Advanced (LTE-A) systems. D2D communication allows two user equipments in close proximity to perform direct data transfer with the assistance of a base station. This can not only improve the spectral efficiency of the entire system, but also reduce the data load of the core network, sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W72/04H04W16/14H04J11/00
CPCH04J11/0026H04W4/70H04W16/14H04W72/0453
Inventor 鲁蔚锋林伟军
Owner NANJING UNIV OF POSTS & TELECOMM
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