Downlink CoMP (Coordinated Multi-Point) hybrid collaborative communication method based on LTE-Advanced (Long Term Evolution-Advanced) system

A cooperative communication and comp-cb technology, which is applied in the field of realization of LTE-Advanced system downlink CoMP scheme, can solve the problem of large amount of information interaction

Active Publication Date: 2014-11-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention aims to solve the limitations of the existing LTE-Advanced system downlink CoMP cooperation scheme and the problem of excessive information exchange between cooperative base stations, thereby providing a downlink CoMP hybrid cooperative communication method based on the LTE-Advanced system

Method used

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  • Downlink CoMP (Coordinated Multi-Point) hybrid collaborative communication method based on LTE-Advanced (Long Term Evolution-Advanced) system
  • Downlink CoMP (Coordinated Multi-Point) hybrid collaborative communication method based on LTE-Advanced (Long Term Evolution-Advanced) system
  • Downlink CoMP (Coordinated Multi-Point) hybrid collaborative communication method based on LTE-Advanced (Long Term Evolution-Advanced) system

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specific Embodiment approach 1

[0031] Specific embodiment one, the downlink CoMP hybrid cooperative communication method based on LTE-Advanced system, it is realized by the following steps:

[0032]Step 1. Parameter setting: set the distance between base stations, system transmission bandwidth, base station transmit power, noise power spectral density, antenna offset angle, number of base station transmit antennas, number of terminal receive antennas, number of users in each cell, size of cooperative set and Relevant parameters such as the proportion of CoMP-JP users in the cell α;

[0033] Step 2. Network generation: Generate a cellular network according to the parameters in step 1; grid the cell, calculate the distance from each location point to the base station, and obtain the cell to which each point belongs; sector angle, calculate the sector to which the point belongs;

[0034] Generate users: get the location information of the users, the cell to which they belong, the sector to which they belong, ...

specific Embodiment approach 2

[0050] Embodiment 2. The difference between this embodiment and the downlink CoMP hybrid cooperative communication method based on the LTE-Advanced system described in Embodiment 1 is that in step 4, α=0, that is, all users cooperate in CoMP-CB mode At this time, the specific steps of the downlink CoMP hybrid coordination scheme based on the LTE-Advanced system are:

[0051] Step 1. Parameter setting: set the distance between base stations, system transmission bandwidth, base station transmit power, noise power spectral density, antenna offset angle, number of base station transmit antennas, number of terminal receive antennas, number of users in each cell, size of cooperative set, etc. Related parameters.

[0052] Step 2. Network generation: Generate a cellular network according to the parameters in step 1; grid the cell, calculate the distance from each location point to the base station, and obtain the cell to which each point belongs; sector angle, calculate the sector to...

specific Embodiment approach 3

[0059] Embodiment 3. The difference between this embodiment and the downlink CoMP hybrid cooperative communication method based on the LTE-Advanced system described in Embodiment 1 is that in step 4, α=1, that is, all users cooperate in CoMP-JP mode At this time, the specific steps of the downlink CoMP hybrid coordination scheme based on the LTE-Advanced system are:

[0060] Step 1. Parameter setting: set the distance between base stations, system transmission bandwidth, base station transmit power, noise power spectral density, antenna offset angle, number of base station transmit antennas, number of terminal receive antennas, number of users in each cell, size of cooperative set, etc. Related parameters.

[0061] Step 2. Network generation: Generate a cellular network according to the parameters in step 1; grid the cell, calculate the distance from each location point to the base station, and obtain the cell to which each point belongs; sector angle, calculate the sector to...

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Abstract

The invention discloses a downlink CoMP (Coordinated Multi-Point) hybrid collaborative communication method based on an LTE-Advanced (Long Term Evolution-Advanced) system, relates to the field of communication, and aims to solve the problems of high interference among edge user cells, low throughput of cell edge users and limitation on cell edge coverage due to frequency reuse in the conventional cell of origin. By adopting an LTE-Advanced system downlink CoMP technology, inter-cell interference can be reduced effectively, and cell boundary coverage is improved by interconnecting a plurality of adjacent base stations and combining a plurality of antenna signals. In a hybrid collaborative scheme, the poor communication quality on cell edges is improved by adopting CoMP-JP (CoMP-Joint Processing) for the cell edge users; and moreover, a CoMP-CB (CoMP-Coordinated Beamforming) scheme is adopted for other users to weaken inter-cell interference. The downlink CoMP hybrid collaborative communication method is suitable for the downlink CoMP hybrid collaborative communication occasion of the LTE-Advanced system.

Description

technical field [0001] The present invention relates to the communication field, in particular to the realization of the downlink CoMP scheme of the LTE-Advanced (Long Term Evolution-Advanced) system. Background technique [0002] In order to improve the quality of cell edge links and reduce inter-cell interference, traditional cellular networks have proposed many solutions, such as soft handover, frequency planning, intelligent receiver design, and some resource allocation mechanisms. LTE uses inter-cell interference randomization, inter-cell interference cancellation, and inter-cell interference coordination mechanisms to weaken inter-cell interference. Compared with the traditional solution, other technologies that can effectively improve the average throughput of the cell and the throughput of the cell edge, such as cooperative communication, distributed antenna system, inter-cell cooperation, and network MIMO, have also been proposed. The essence of these technologies i...

Claims

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Application Information

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IPC IPC(8): H04B7/08H04B7/06
Inventor 李卓明刘宇琦田纯阳王鹏沙学军吴玮
Owner HARBIN INST OF TECH
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