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Spectrum multiplexing method of D2D communication system in cellular network

A communication system and cellular network technology, applied in wireless communication, sustainable communication technology, advanced technology, etc., can solve problems such as uplink co-channel interference of cellular network users, improve spectrum utilization, improve system coverage probability, and suppress interference Effect

Active Publication Date: 2020-11-13
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this way of sharing spectrum causes a variety of interference problems between inter-layer users and intra-layer users, especially when D2D user pairs are very dense, it will cause serious uplink co-channel interference to cellular network users

Method used

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  • Spectrum multiplexing method of D2D communication system in cellular network
  • Spectrum multiplexing method of D2D communication system in cellular network
  • Spectrum multiplexing method of D2D communication system in cellular network

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Embodiment 1

[0035] A spectrum multiplexing method for a D2D communication system in a cellular network of the present invention will be described below with reference to the accompanying drawings and in combination with preferred embodiments of the present invention.

[0036] see figure 1 , in the present invention, a method for multiplexing frequency resources in a single-cell cellular network D2D communication system is used to suppress the problem of co-channel interference caused by frequency multiplexing. The wireless resource allocation of multi-cell users can be designed according to the method proposed by the present invention, so as to solve the problem of multi-cell interference suppression.

[0037] Step 1. If the D2D user satisfies the following conditions, the uplink spectrum resource of the cellular user can be reused, that is,

[0038] d 0 >f -1 (β); formula (1)

[0039]

[0040]

[0041] where: d 0 is the distance between the D2D user and the serving base station ...

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Abstract

The invention discloses a spectrum multiplexing method of a D2D communication system in a cellular network, and belongs to the technical field of communication. The method comprises the following steps that in step 1, if the distance between a D2D user and a serving base station of a cellular user meets a certain condition, the D2D user can reuse uplink spectrum resources of the cellular user; instep 2, if the jth pair of D2D users Dj meeting the condition in the step 1 has uplink spectrum resources of a plurality of cellular users which can be multiplexed, the cellular users with the minimuminterference metric value are selected to multiplex the spectrum resources according to the interference metric value of the cellular users Ci; in step 3, if the distance between the kth pair of D2Dusers Dk and the jth pair of D2D users Dj meets the condition of a formula (5), the D2D users Dk and the D2D users Dj can share the spectrum resources of the same cellular user. The inter-layer interference between the cellular users and the D2D users and the intra-layer interference between the D2D users can be effectively suppressed, and the spectrum utilization rate and the system energy efficiency are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a spectrum multiplexing method for a D2D communication system in a cellular network, so as to suppress interference caused by spectrum multiplexing. The multiple access technology may be frequency division multiple access (Frequency Division Multiple Access: FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access: OFDMA) and other multiple access technologies. Background technique [0002] In recent years, the mobile communication industry has experienced a period of significant development and reform, and the fifth generation (5G) mobile communication technology has been put into commercial use one after another. According to the industry's demand for 5G, 5G networks will have ultra-high transmission rates, higher spectral efficiency, lower transmission delays, and connections that support higher-density devices. In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04W72/54
CPCH04W72/0453H04W72/53H04W72/541Y02D30/70
Inventor 许方敏邹鹏凯吕梦文王海泉
Owner HANGZHOU DIANZI UNIV
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