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Heuristic D2D resource allocation method based on proportional-fair algorithm

A proportional fair algorithm and resource allocation technology, which is applied in the field of heuristic D2D resource allocation based on proportional fair algorithm, can solve the problems of D2D number limitation, good performance of the resource allocation scheme, etc. , taking into account the effect of system performance

Active Publication Date: 2017-04-19
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, since a cellular user channel can only be multiplexed by one D2D pair, the number of D2D pairs accessing the network is limited, and it is not known whether the resource allocation scheme can maintain good performance when user service requirements change.

Method used

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  • Heuristic D2D resource allocation method based on proportional-fair algorithm
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  • Heuristic D2D resource allocation method based on proportional-fair algorithm

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Embodiment Construction

[0017] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0018] like figure 1 As shown, in a single cell environment, there is one base station, M cellular users, and N D2D pairs, and all users are evenly distributed in the cell. Assuming that all D2D pairs have completed the device discovery and pairing process, the base station can detect all D2D pairs. Related Channel State Information (CSI). In the LTE system, the system bandwidth is divided into resource blocks of equal size, ...

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Abstract

The invention relates to a heuristic D2D resource allocation method based on the proportional-fair algorithm. The method comprises the steps of calculating the priorities of N D2D pairs in multiplexing different cellular user channels; on the premise that the SINR threshold constraint conditions of cellular users and D2D pairs are ensured, ranking the above priorities from high to low, selecting one D2D pair for each resource block according to the ranked sequence of the priorities by a scheduler, and judging whether the data rate requirement of the D2D pairs is met or not; if the data rate requirement of the D2D pairs is met, reducing the priority of the D2D pair, and preferentially allocating a resource block for each unsatisfied D2D pair. According to the technical scheme of the invention, the requirements of D2D pairs on data rate are ensured, and both the fairness and the system performance are considered at the same time.

Description

technical field [0001] The present invention relates to a user resource allocation technology under a cellular network in the field of wireless communication technology, in particular to a heuristic D2D resource allocation method based on a proportional fairness algorithm. Background technique [0002] With the continuous evolution of mobile communication systems, such as LTE-Advanced and WiMAX (802.16), the demand for bandwidth is gradually increasing, wireless spectrum resources are becoming increasingly scarce, and the frequency bands of commercial mobile communication are gradually developing to high frequencies. However, high frequency will also bring many problems, such as increased space loss and path loss, low diffraction ability, and relatively small coverage. According to relevant data from the Ministry of Industry and Information Technology, a total of 162MHz of spectrum is used for 2G systems, 335MHz of spectrum is used for 3G systems, and TD-LTE systems occupy 2...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W72/08H04W72/54
CPCH04W28/0215H04W28/0231H04W72/542
Inventor 王俊涛李慧卜智勇
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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