Densely distributedwireless communication method and system

A wireless communication and distributed technology, applied in the field of multi-user space division multiple access wireless communication, can solve the problems of high transmission power and low spectrum efficiency at the edge of the cell, and achieve the goal of resisting large-scale fading, improving throughput and reducing complexity Effect

Active Publication Date: 2013-08-14
HUAWEI TECH CO LTD
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Problems solved by technology

In order to further improve the spectral efficiency and cell edge performance, multi-user MIMO and coordinated multi-point transmission technolog...

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  • Densely distributedwireless communication method and system
  • Densely distributedwireless communication method and system
  • Densely distributedwireless communication method and system

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Embodiment Construction

[0025] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0026] 1. Wireless Communication System Network Architecture

[0027] The network architecture of the dense distributed wireless communication system in this embodiment is as follows figure 1 As shown, the illustrated scene consists of three adjacent cells, each cell has L RAUs, and the set of RAUs is {1,2,...,L}, which are connected to the central processing unit through optical fiber (or other high-speed links) , each RAU has N antennas, each cell has K users, the user set is {1,2,...,K}, each...

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Abstract

The invention discloses a densely distributedwireless communication method and system. Distributed remote access units (RAUs) are densely distributed in each cell in wireless communication, users in the same cell can send detection signals by using different time-frequency resources, and a center processing unit of each cell acquires statistic channel information of the users in the cell and statistic channel information of users in marginal areas of an adjacent cell according to the received detection signals; each cell determines the users in the marginal areas of the cell and RAU sets and interacts with the statistic channel information of the users in the marginal areas of the adjacent cell; with the adoption of the obtained statistic channel information, the adjacent cell firstly schedules the users in the marginal areas and the RAUs of the users in the marginal areas, then schedules the users in respective cells and the RAUs of the users in the respective cells and sets the unscheduled RAUs to be in a sleep mode; and finally, the users perform wireless communication of the same time-frequency resource on the selected RAU sets. The densely distributed wireless communication method and system have the advantages of low processing complexity, high handling capacity and low required energy consumption about system signals.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a multi-user space division multiple access wireless communication method using densely distributed nodes. Background technique [0002] In the case of increasingly scarce spectrum resources and explosive growth of wireless data traffic, the wireless communication system after 4G needs new changes. Traditional MIMO technology can effectively improve spectrum efficiency without increasing power and bandwidth resources. At present, this technology has become a key technology of 4G mobile communication standards. In order to further improve the spectral efficiency and cell edge performance, multi-user MIMO and coordinated multipoint transmission technologies are adopted, but the spectral efficiency and cell edge spectral efficiency that can be achieved are still low, and the required transmit power is high. Contents of the invention [0003] Technical problem: In o...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04W72/12
CPCY02B60/50H04W52/0216H04W52/0219Y02D30/70
Inventor 高西奇孙强金石张源孙晨
Owner HUAWEI TECH CO LTD
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