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Cooperative type conversion technique of multi-sector cooperative communication

A cooperative communication, multi-sector technology, applied in content conversion, wireless communication, information format, etc., to achieve the effect of improving throughput and system performance, reducing delay, and improving cooperative gain

Active Publication Date: 2014-01-01
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current base station or base station equipment is limited to fixedly providing network-based multi-cell (multi-sector) cooperative communication such as network MIMO for mobile terminals at the edge of the cell or sector, or fixedly providing cooperation-based communication such as Co-MIMO. Multi-cell (multi-sector) cooperative communication

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  • Cooperative type conversion technique of multi-sector cooperative communication
  • Cooperative type conversion technique of multi-sector cooperative communication
  • Cooperative type conversion technique of multi-sector cooperative communication

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Embodiment Construction

[0027] Refer to the attached Figure 3 to Figure 6 , the specific embodiment of the present invention is described in detail from the angle of method:

[0028] like image 3 As shown, the sectors in the cellular system can be divided into three parts according to the interference effect of the adjacent sectors received by the mobile terminal in the sector: the center part of the sector, the sector edge of the same cell, and the sector edge of a different cell. Generally speaking, due to radio signal fading, the radio channel in the central part of the sector will not be interfered by the signals of adjacent sectors; however, the radio channels at the sector edge of the same cell and the sector edge of different cells may be interfered by the signals of adjacent sectors interference. However, the inter-sector interference received by the sector edge of the same cell is different from the interference received by the sector edge of different cells: the inter-sector interferenc...

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Abstract

The current multi-base station cooperative communication technology could only provide one type of cooperative communication fixedly, and this results in that either the amount of data exchange between the base stations is huge and the latency is increased, or the optimum gain can not be obtained. To address this problem, the invention proposes a switching technology for collaboration type in multi-sector cooperative communication. The base station equipment dominating the sector determines one or more cooperating sectors of the mobile terminal, determines the type of the multi-sector cooperative communication provided cooperatively with said one or more cooperating sectors, based on information of said one or more cooperating sectors according to predefined rules, and cooperates with said one or more cooperating sectors and provides, for the mobile terminal, the multi-sector cooperative communication of the corresponding determined type. According to the invention, high speed exchange of the complete channel information and data are conducted between the same-cell sectors, and the cooperative gain is increased; none or few of data backhaul is conducted between the different-cell sectors, which results in decreased backhaul latency of the cooperating information , and increased throughput of the user at sector edge and system performance.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to multi-sector cooperative communication technology. Background technique [0002] With the evolution of standards such as IEEE 802.16e and 3GPP LTE to IMT-advanced, IEEE802.16m and 3GPP LTE+, there are higher requirements for sector throughput and sector and cell edge user throughput. Due to the low frequency reusability of current wireless communication networks, there is a certain amount of Inter-Cell Interference (ICI) at the sector and cell edge, which makes it very difficult to improve the user throughput of the sector and cell edge. Therefore, in IEEE 802.16e and 3GPP LTE, many technologies aimed at solving ICI problems have emerged, such as ICI-aware power control, flexible frequency reuse, and macro diversity. ICI randomization with interference cancellation at receiver, etc. Most of these solutions can effectively improve the throughput of sector and cell edg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/18H04W88/02H04W88/08
CPCH04W4/18H04W88/08H04B7/0413H04B7/0491H04B7/0632H04L1/0026
Inventor 杨红卫李栋
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD