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Distribution method of D2D communication system resource under cellular network with incomplete channel information

A technology of cellular network and communication system, which is applied in the resource allocation of D2D communication system under the cellular network, and in the field of joint resource allocation, which can solve the problem of incomplete knowledge of channel state information

Active Publication Date: 2016-05-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the fact that channel state information is often not completely known in practical applications, the present invention provides a method for allocating D2D communication system resources in a cellular network with incomplete channel information

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  • Distribution method of D2D communication system resource under cellular network with incomplete channel information
  • Distribution method of D2D communication system resource under cellular network with incomplete channel information
  • Distribution method of D2D communication system resource under cellular network with incomplete channel information

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Embodiment

[0070] Examples of the present invention figure 1 As shown, a method for allocating resources of a D2D communication system under a cellular network with incomplete channel information is realized by a D2D communication system under a cellular network: the system includes two parts: a cellular system and a D2D system, and the cellular system includes a base station BS and a C cellular users; the D2D system includes L pairs of D2D users, the first pair of D2D users includes a D2D transmitter TXl and a D2D receiver RXl, where l∈{1,2,...,L} is set under the cellular network The D2D communication system of D2D has a total of C resource blocks, each cellular user occupies a corresponding resource block, and the symbol y l，c ∈{0, 1} represents the resource block reuse factor, that is, when the lth D2D user pair reuses the cth resource block, y l，c = 1; otherwise y l，c = 0; Since each resource block is reused by at most one pair of D2D users, so where c∈Λ represents the cth cellu...

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Abstract

The invention provides a distribution method of a D2D communication system resource under a cellular network with incomplete channel information, belonging to the technical field of wireless communication. In the D2D communication system under a cellular network, a D2D user can reuse the resource block of a cellular user to realize the direct communication without a base station. According to the method, in the condition that interference channel state information is not fully known, the power distribution of the D2D user and the cellular user and resource block distribution are subjected to joint optimization, while the cellular user QoS (Quality of Service) requirement is ensured, the sum rate of a D2D sub system is maximized, and the compromise between optimality and robustness of the system is realized. Compared with the condition that channel state information is fully known, the method has a significant advantage in ensuring the stability of the whole system.

Description

technical field [0001] The present invention relates to a joint resource allocation method when interference channel state information is incompletely known in a D2D communication system under a cellular network, specifically a method for allocating resources of a D2D communication system under a cellular network with incomplete channel information. It belongs to the technical field of wireless communication. Background technique [0002] D2D (Device-to-Device) communication is a new type of technology that allows terminals to communicate directly through multiplexing cell resources without going through a base station under the control of the system. It can increase the spectrum efficiency of the cellular communication system and reduce the The transmit power of the terminal allows the network to accommodate more users, and solves the problem of scarcity of wireless communication spectrum resources to a certain extent. In the D2D communication system under the cellular net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W72/04H04W72/08H04W72/54
CPCH04W4/70H04W72/0453H04W72/0473H04W72/543
Inventor 马丕明李孟琪马艳波
Owner SHANDONG UNIV