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Mode selection and resource allocation method of device-to-device (D2D) users in cellular system

A technology of resource allocation and cellular system, which is applied in the field of mode selection and resource allocation of direct communication between terminals and users in cellular systems

Active Publication Date: 2015-06-17
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in all the current literature, there is no such a method that jointly considers power control, spectrum or channel allocation, mode selection

Method used

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  • Mode selection and resource allocation method of device-to-device (D2D) users in cellular system
  • Mode selection and resource allocation method of device-to-device (D2D) users in cellular system
  • Mode selection and resource allocation method of device-to-device (D2D) users in cellular system

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Embodiment Construction

[0057] The mode selection and resource allocation method of the device-to-device (D2D) user in the cellular system designed by the method of the present invention is applicable to occasions such as figure 1 shown. Specifically include:

[0058] Cell 110:

[0059] In the cell 110, there is a base station 111, and M uplink cellular users 112 (UE 1 ,UE 2 ,...,UE m ,…,UE M ), K to D2D users (D2D 1 ,D2D 2 ,...,D2D k ,...,D2D K ), each pair of D2D k 113 all include a sending terminal S k 114 and a receiving terminal R k 115. There are N in the system u Uplink idle channels, N d Downlink idle channels are available for D2D users, and these K pairs of D2D users have undergone admission control and can be accessed.

[0060] In the specific embodiment of the present invention, it is assumed that K<M, each uplink and each downlink can use at most one channel resource, and each cellular user can only be multiplexed by a pair of D2D users at most. The specific implementatio...

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Abstract

The invention discloses a mode selection and resource allocation method for device-to-device (D2D) users in a cellular system, which reduces the algorithm complexity of the mode selection and resource allocation for the D2D users, and the obtained mode selection and resource allocation for the D2D users can reduce the transmission power needed by the D2D users. The method comprises two steps of mode and resource demand calculation and analysis and relevant algorithm for the resource demand and supply relation. The mode and resource demand calculation step comprises the following steps of calculating the minimal transmission power needed by each pair of D2D users under a cellular mode, a special channel mode and a multiplying channel mode; calculating the power difference of the D2D users under the three different modes; calculating the mode demand and the resource demand of each pair of D2D users; and counting the sum of the resource demand of the system. The analysis and relevant algorithm step for the resource demand and supply relation comprises the steps of further obtaining a mode selection and resource allocation algorithm under each situation according to the resource demand and supply relation of the system.

Description

technical field [0001] The present invention relates to the communication field, and in particular to a method for mode selection and resource allocation of a device-to-device (D2D) user in a cellular system. Background technique [0002] Device-to-Device (D2D) communication is a new technology that allows terminals to communicate directly by reusing cell resources under the control of the system. It can increase the spectrum utilization efficiency of the cellular system and reduce the The load of the base station, the reduction of the terminal transmission power, and the improvement of the overall system throughput solve the problem of the lack of spectrum resources in the wireless communication system to a certain extent. [0003] Mode selection is a very important issue in D2D communication. Through appropriate mode selection, the spectral efficiency of cellular networks can be greatly improved. D2D users can use three modes for communication: [0004] (1) Cellular mode....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04W72/04H04W72/12
Inventor 余官定徐燕芳殷锐钟财军鲍鹏程
Owner ZHEJIANG UNIV
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