D2D communication resource allocation method in relay cooperative heterogeneous cellular network

A communication resource allocation and cellular network technology, which is applied in the field of D2D communication resource allocation in relay collaborative heterogeneous cellular networks, can solve the problems of not being able to guarantee the QoS of cellular users and D2D users at the same time, not satisfying green communication, and waste of spectrum resources.

Inactive Publication Date: 2015-09-16
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Obviously, this cannot guarantee the QoS of cellular users and D2D users at the same time, and does not meet the requirements of green communication
[0006] Some traditional cellular networks only consider the situation where a pair of D2D communication and a cellular user share spectrum resources
However, in the actual environment, the number of cellular user

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  • D2D communication resource allocation method in relay cooperative heterogeneous cellular network
  • D2D communication resource allocation method in relay cooperative heterogeneous cellular network
  • D2D communication resource allocation method in relay cooperative heterogeneous cellular network

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Embodiment Construction

[0049] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0050] This embodiment is a D2D resource allocation scheme based on relay coordination and power control. The system noise is zero-mean additive white Gaussian noise with a spectral density of -174dBm / Hz. The distance from the relay to the base station is 400 meters, and the channel model is considered simple. The path loss model of : g=d -α . Wherein, g represents the channel gain, d represents the distance, and α represents the path fading index, where α=3 is selected.

[0051] This embodiment includes the following steps:

[0052] Step 1: Get in Indicates th...

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Abstract

The invention discloses a D2D communication resource allocation method in a relay cooperative heterogeneous cellular network, comprising the following steps: solving the maximum achievable rate threshold R<Q(n),n><dmax>of D2D communication in a frequency band n when each cellular user n adopts a communication mode Q(n); judging whether spectrum resources selected for D2D communication can meet the requirement of the quality of service of a system according to R<Q(n),n><dmax>; jointly allocating the achievable rate target R<Q(n),n><d> allocated for D2D communication in the frequency band n when the cellular user n adopts the communication mode Q(n), and determining the communication mode Q(n) of each cellular user n; and solving the total transmitting power Ptotal of the system. By adopting the method, the transmitting power of cellular users and D2D users and the optimal achievable rate target of D2D users in each frequency band can be optimized at the same time, and the communication mode of each cellular user in the system can be determined. Compared with a traditional resource allocation method, the method can reduce the total power consumption of the system while ensuring the achievable rate of cellular users and D2D users, and is more in line with the requirement of green communication.

Description

technical field [0001] The present invention relates to a method in the technical field of wireless communication, in particular to a method for allocating D2D (Device-to-Device) communication resources in a relay cooperative heterogeneous cellular network. Background technique [0002] In order to meet the rapidly increasing demands on spectrum resources and data rates of multimedia devices and services, wireless networks are evolving toward heterogeneous networks. With the rapid development of mobile communications, the rapid increase of multimedia devices and services has led to an exponential increase in the mobile traffic load of cell base stations, which not only makes the mobile network congested, but also increases the energy consumption of equipment. In reality, spectrum resources are limited and equipment energy consumption is limited. How to effectively increase spectrum utilization and reduce energy consumption will be a research focus. [0003] The traditional ...

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Application Information

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IPC IPC(8): H04W16/10H04W52/02
CPCH04W16/10H04W52/0219H04W52/0235Y02D30/70
Inventor 郑东何晨蒋铃鸽
Owner SHANGHAI JIAO TONG UNIV
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