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Multi-mode multi-pair D2D communication method and system

A communication method and communication pair technology, which is applied in transmission systems, wireless communication, machine-to-machine/machine-type communication services, etc., and can solve the problem that D2D communication does not consider multi-mode and multi-pair scenarios at the same time

Active Publication Date: 2019-04-05
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] None of the existing optimization techniques for mode selection in D2D communication considers multi-mode and multi-pair scenarios at the same time.

Method used

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  • Multi-mode multi-pair D2D communication method and system
  • Multi-mode multi-pair D2D communication method and system
  • Multi-mode multi-pair D2D communication method and system

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0062] This embodiment is based on such a communication scenario: there are common mobile phone user terminals (Cellular User E q uipment, CUE) and D2D user terminal (Device-to-Device User Equipment, DUE), and there is a potential relay user terminal (Relay User Equipment, RUE) around each D2D communication pair to serve the pair of D2D communication pairs. In a cell, it is assumed that there are M CUEs and K D2D communication pairs, and the number of D2D communication pairs is smaller than the number of CUEs, that is, K<M. When there is no idle channel in the cell, in other words, when all the channels in the cell are occupied by CUEs, the D2D communication pair will reuse the uplink channel in the cellular mobile communication.

[0063] From the perspective of the cooperation form of the two ...

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Abstract

The invention provides a multi-mode multi-pair D2D communication method and system which can obtain an optimal D2D mode selection scheme and optimize the sum capacity of cells, and belongs to the technical field of wireless communication. The multi-mode multi-pair D2D communication method of the invention includes the following steps: a base station detects the channel capacity of each user terminal in real time in a cellular cell; with the sum capacity as an objective function, the base station makes D2D communication pairs occupy dedicated channels or multiplex the uplinks of cellular user equipment according to the condition of channels in the cell and makes the D2D communication pairs select a direct connection mode or a relay mode or a local routing mode for communication. An optimalmode selection scheme is provided for the D2D communication pairs in the cell according to the residual channel condition and the three modes of D2D communication to enable the D2D communication pairsto multiplex the uplinks of cellular network user equipment in an optimal manner, so that the sum capacity of the system is maximized.

Description

technical field [0001] The present invention relates to a D2D communication method, in particular to a multi-mode multi-pair D2D communication method and system, belonging to the technical field of wireless communication. Background technique [0002] With the increasing demand for wireless communication applications, the mobile communication network will face in the next few years: 1000 times the data capacity increase, 10 to 100 times the wireless device connection, 10 to 100 times the user speed requirements, 10 times Long battery life requirements and more. Obviously, the current communication network cannot meet these needs, so 5G technology has emerged, and the exploration of B5G has also been put on the agenda. Faced with the extremely differentiated performance requirements of diverse scenarios, it is difficult to form a universal solution for all scenarios based on a single technology as in the past. [0003] Device-to-Device (D2D) technology is an important techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/14H04W4/70H04B17/382
CPCH04B17/382H04W4/70H04W76/14
Inventor 陈晓华刘喜庆
Owner HARBIN INST OF TECH