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Method for multiplexing cellular user resources of device-to-device (D2D) user pairs based on base station positioning

A technology for cellular users and users, applied in electrical components, wireless communication and other directions, can solve the problem of interference at the receiving end of cellular links, and achieve the effect of simplifying complexity, reducing complexity, and enhancing practical operability

Active Publication Date: 2011-07-13
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
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AI Technical Summary

Problems solved by technology

If D2D communication is allocated to non-orthogonal channel resources, D2D communication will cause interference to the receiver in the cellular link

Method used

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  • Method for multiplexing cellular user resources of device-to-device (D2D) user pairs based on base station positioning
  • Method for multiplexing cellular user resources of device-to-device (D2D) user pairs based on base station positioning
  • Method for multiplexing cellular user resources of device-to-device (D2D) user pairs based on base station positioning

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Embodiment Construction

[0023] For ease of understanding, the present invention takes a D2D communication network under the LTE-A system as an example to illustrate that D2D technology is applied to a cellular network, and the base station determines the cellular network users who share resources for D2D user pairs through a positioning method. Suppose the system has a bandwidth of 10MHz and works at 2GHz. Suppose there are 10 cellular users in the system, U 1 , U 2 ,...,U 10 ; There are two pairs of D2D users, (D 1 ,D 2 ) and (D 3 ,D 4 ). Here, the number of cellular users and the number of D2D user pairs may be different. The present invention is generally applicable to all network structure models having the basic features in this example. These D2D users can directly communicate under the coordination of the base station, and the D2D user pairs share network resources with the macro cell communication during communication.

[0024] The specific process of determining the resource sharing...

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Abstract

The invention provides a technical scheme applied in a cellular network of mobile communication, which applies a device-to-device (D2D) technology in the cellular network, and allows D2D user pairs to multiplex resources of cellular network users for communication. The invention provides a method based on base station positioning to select the cellular users for the D2D user pairs for multiplexing resources and selects the cellular user having the farthest distance away from each pair of D2D users to carry out resource multiplexing. In the scheme provided by the invention, the complexity of an algorithm through which a base station end selects the cellular users for resource multiplexing is simplified, and the interference between the D2D user pairs for multiplexing resources and the cellular users is reduced to be lowest, so that the whole frequency spectrum efficiency of the system is improved. In addition, for the method, the practical operability is very strong, the implementation is easy in practice, and the application modes are more flexible.

Description

technical field [0001] The present invention applies end-to-end (Device-to-Device, D2D) technology to a cellular network, and a D2D user communicates with user resources in a multiplexed cellular network. Or other communication networks that have similar architectural characteristics to the application of the D2D technology in the cellular network. The present invention proposes a method for multiplexing cellular user resources for D2D user pairs based on base station positioning, which can effectively simplify the complexity of resource multiplexing algorithms in cellular networks with D2D communication. And under the condition of ensuring the minimum communication rate of cellular users, the spectral efficiency of the overall system (including cellular communication and D2D communication) is improved. The method proposed by the invention has strong practical operability. Background technique [0002] Device-to-Device (D2D) communication is a new type of technology that a...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W72/06
Inventor 陈力陈晓航王彬张欣常永宇杨大成
Owner BEIJING UNIV OF POSTS & TELECOMM
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