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Full duplex D2D interference management method based on power control

A technology of power control and interference management, which is applied in the field of full-duplex D2D interference management based on power control, and can solve problems such as transmission rate reduction, failure to consider user QoS requirements, failure to consider CU user full-duplex D2D user power coordination issues, etc.

Active Publication Date: 2018-01-19
XI AN JIAOTONG UNIV
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Problems solved by technology

[0005] At present, the current technical solutions have the following disadvantages: In the current D2D communication research, most of the research does not consider the user's QoS requirements, nor does it consider the CU user and As opposed to the power coordination problem between full-duplex D2D users
In the multiplexing mode, although the mutual interference is weakened by reasonable resource allocation, the transmission rate reduction caused by D2D users sharing CU user spectrum resources has not been considered

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  • Full duplex D2D interference management method based on power control
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  • Full duplex D2D interference management method based on power control

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Embodiment Construction

[0066] The present invention will be further explained below in conjunction with specific embodiments and accompanying drawings.

[0067] see figure 1 , the present invention considers a circular single cell, does not consider the interference between cells, N pairs of FD-D2D users and M CU users are randomly distributed in the cell, and assume that they are relatively static, the value N only means that The total number of users who have established the D2D communication mode does not represent the number of D2D pairs connected to the network in the multiplexing mode; the value M represents the total number of CUs that can be multiplexed. It is assumed that the channel bandwidth of each CU is the same, and all are single channels. In the simulation verification, it is considered that CU users and FD-D2D users are randomly distributed in the cell under different variables, and the distance between the two users in the FD-D2D pair is randomly distributed between 20m and 50m, t...

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Abstract

The invention discloses a full duplex D2D interference management method based on power control. In a single honeycomb cell, there is a scene in which a plurality of FD-D2D users and CU users exist, and a single FD-D2D user multiplexes uplink channel resources of a single CU user. Considering the problems of same frequency interference generated by multiplexing and how to select the to-be-multiplexed CU by the FD-D2D users, power control and channel resource allocation are performed in a distributed manner, the transmitting power of the FD-D2D users is managed by the power control to maximizethe transmitting power while achieving the interference limitation of the multiplexed CU users at first; and the channel resource allocation is performed by a greedy search algorithm to find channel resources satisfying the predetermined standard for multiplexing so as to maximize the volume of the system. By adoption of the full duplex D2D interference management method, the anti-interference ability of the full duplex D2D can be improved, and the throughput of the network service required by the QoS is further improved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a resource allocation method based on D2D clustering, in particular to a full-duplex D2D interference management method based on power control. Background technique [0002] With the technical development of mobile terminals and the diversification of service types, users have higher and higher demands on data transmission rates and data traffic. D2D (Device-to-Device, direct-to-device) communication is a key technology that can improve spectrum efficiency, and is suitable for short-distance communication. Full-duplex (FD) communication technology enables users to use the same resources to send and receive data. Both D2D technology and full-duplex technology have the characteristics of short communication distance. Combining these two technologies can further improve spectrum efficiency and system throughput. [0003] In a cell, if there are multiple full-duplex D2D ...

Claims

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Application Information

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IPC IPC(8): H04W52/24H04W52/38H04W72/08H04W52/26
Inventor 曲桦王璐赵季红栾智荣
Owner XI AN JIAOTONG UNIV
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