Resource allocation method of d2d communication system under cellular network with incomplete channel information
A technology of cellular network and communication system, which is applied in the field of joint resource allocation and resource allocation of D2D communication system under cellular network, and can solve the problem of incomplete knowledge of channel state information, etc.
Active Publication Date: 2018-10-26
SHANDONG UNIV
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[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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[0072] 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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A method for allocating D2D communication system resources in a cellular network with incomplete channel information belongs to the technical field of wireless communication. In the D2D communication system under the cellular network, the D2D users can reuse the resource blocks of the cellular users to realize direct communication without going through the base station. The resource allocation method jointly optimizes the power allocation and resource block allocation of D2D users and cellular users when the interference channel state information is not completely known, so as to ensure the QoS (Quality of Service) requirements of cellular users and maximize the D2D subsystem. The sum rate enables the system to achieve a compromise between optimality and robustness. Compared with the case where the channel state information is completely known, this method has a significant advantage in ensuring the stability of the entire 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...
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IPC IPC(8): H04W4/70H04W72/04H04W72/08H04W72/54
CPCH04W4/70H04W72/0453H04W72/0473H04W72/543
Inventor 马丕明李孟琪马艳波
Owner SHANDONG UNIV