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Hybrid duplex relay assisted D2D communication method

A communication method and relay technology, which are applied in the directions of duplex signal operation, sub-channel allocation of transmission paths, and digital transmission systems, and can solve problems such as loop interference at the relay end.

Inactive Publication Date: 2020-02-07
深圳市白麓嵩天科技有限责任公司
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Problems solved by technology

But this mode will generate loop interference from the transmitting antenna to the receiving antenna at the relay end

Method used

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  • Hybrid duplex relay assisted D2D communication method
  • Hybrid duplex relay assisted D2D communication method
  • Hybrid duplex relay assisted D2D communication method

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Embodiment Construction

[0019] This embodiment provides a hybrid duplex relay-assisted D2D communication mode and power control method, the flow chart of which is as follows figure 1 As shown, it specifically includes the following steps:

[0020] Step 1: Establishment of the system model. Such as figure 2 As shown, the hybrid duplex relay-assisted D2D communication system includes a base station B, a cellular user C and a pair of D2D users, wherein the D2D users include a D2D transmitting user R and a receiving user D. The D2D transmitting user also serves as an auxiliary relay to help the cellular user to perform signal transmission. It is equipped with a transmitting antenna and a receiving antenna, which can realize simultaneous signal transmission and reception. Assuming that the system works on the downlink, the system bandwidth is W, and the cellular users are in the cell edge or deep fading state, the transmission rate of the direct link from the base station to the cellular users is lower...

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Abstract

The invention provides a hybrid duplex relay assisted D2D communication method. The method comprises the following five steps: a system model is established; and the transmission sub-frame is cut. Inthe time slot 1, the D2D auxiliary relay receives a cellular user signal sent by the base station and sends the D2D user signal to a D2D receiving user at the same time, and full duplex communicationmode transmission is achieved; in the time slot 2, the D2D relay stops receiving the signal from the base station, and only the transmitting antenna decodes and forwards the cellular user signal received in the time slot 1 to realize half-duplex communication mode transmission; and power control is performed on the base station and the D2D relay respectively in the time slot 1 and the time slot 2to ensure that the base station and the D2D relay perform signal transmission at the optimal transmitting power. The method has wide application value in the field of mobile cellular communication technology resource management.

Description

technical field [0001] The invention relates to the field of resource management of mobile cellular communication technology, in particular to a hybrid duplex relay-assisted D2D communication mode and a power control method. Background technique [0002] With the rapid development of Internet services, the amount of mobile data has shown explosive growth. In order to meet people's demand for faster transmission rates and more throughput in mobile communication systems in the next 10 to 15 years, D2D (device -to-device, data pass-through) technology. D2D communication is a technology that realizes direct communication between mobile devices that are relatively close by multiplexing channel resources of cellular users under the control of a base station. Different from traditional mobile cellular communication, the data transmission of D2D users is no longer forwarded by the base station. Compared with the transmission distance from the user to the base station, the transmis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L5/14H04L5/16
CPCH04L5/0064H04L5/0078H04L5/1438H04L5/16
Inventor 叶方顿辉田园焦淑红苏春霞从善亚白萍李一兵
Owner 深圳市白麓嵩天科技有限责任公司
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