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D2D mode selection and resource allocation method in LTE-A network

1. LTE-A, mode selection technology, applied in the field of wireless communication, can solve problems such as lowering user service quality and cellular user communication quality interference

Active Publication Date: 2020-07-14
JILIN UNIV
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Problems solved by technology

The introduction of D2D communication technology not only improves the system performance, but also interferes with the communication quality of the original cellular users in the system, reducing the service quality of users, especially considering that the data transmission rate is difficult to meet the future large-scale terminal access requirements How to allocate the optimal communication resources for D2D communication and choose the most reasonable communication method is the key to obtain the potential advantages of D2D communication

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  • D2D mode selection and resource allocation method in LTE-A network
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  • D2D mode selection and resource allocation method in LTE-A network

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] The idea of ​​the present invention is: step S1, in consideration of the minimum SINR (signal to interference plus noise ratio) requirements of the original CUE in the LTE-A network, first convert the DUE communication mode selection, channel resource allocation and power control problems into mixed integers Non-linear programming problem, and split it into two sub-problems of DUE power control, DUE mode selection and channel resource allocation to solve...

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Abstract

The invention discloses a D2D mode selection and resource allocation method in an LTE-A network. First, a system model is established, and the D2D mode selection and resource allocation problems are converted into mixed integers in consideration of the minimum SINR requirement of the original CUE in the LTE-A network. Non-linear programming problem, and split it into two sub-problems of DUE power control and DUE mode selection and channel resource allocation to solve; then calculate the optimal transmit power of DUE in cellular mode and multiplexing mode respectively; finally adopt the interference-based Restricted DUE mode selection and channel resource allocation method to maximize network throughput and improve network spectrum utilization. It solves the problems of mode selection, channel allocation and power control of D2D communication, and realizes the maximization of system throughput.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a D2D mode selection and resource allocation method in an LTE-A network. Background technique [0002] As one of the key technologies in the evolution of the fourth-generation and fifth-generation mobile network architecture, D2D communication can improve system throughput and spectrum utilization, expand system capacity and coverage, reduce the traffic load of the core network, and improve user service experience. It also reduces the network operating costs of telecom operators due to capacity expansion, and opens up a new way to realize safe, reliable, large-capacity, high-quality, and personalized communication services in the next-generation communication system. [0003] D2D communication includes three communication modes: reuse mode (reuse mode), cellular mode (cellular mode) and dedicated mode (dedicated mode). The multiplexing mode means that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W72/04H04W72/08
CPCH04W4/70H04W72/0473H04W72/541Y02D30/70
Inventor 钱志鸿田春生王雪
Owner JILIN UNIV
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