Method for efficiently selecting user communication base stations in relay cellular network

A cellular network and communication base station technology, applied in wireless communication, network traffic/resource management, advanced technology, etc., can solve complex problems

Active Publication Date: 2015-11-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the selection of user base stations is a process of trade-offs,

Method used

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  • Method for efficiently selecting user communication base stations in relay cellular network
  • Method for efficiently selecting user communication base stations in relay cellular network
  • Method for efficiently selecting user communication base stations in relay cellular network

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[0056] Such as figure 1 As shown, taking the cellular network as an example, the system has a main base station, a half-duplex, decoding and forwarding relay, and users are evenly distributed in the cellular network. The coverage ranges of the main base station and the relay are 1000 meters and 300 meters respectively, and the distance between the two base stations is 700 meters. If the user is within the coverage of the relay, the user can communicate with the relay or directly with the main base station; otherwise, the user can only communicate with the main base station. The size of a time-frequency resource block is set to be 180KHz*1ms, and the frequency bandwidth that can be used by the main base station and the relay is both 6MHz, that is, there are 30,000 time-frequency resource blocks. Set the number of users in the cellular network as 2 to 20, and their requirements for transmission rate are randomly distributed between 128 and 512 kbps. The noise power is the powe...

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Abstract

The invention discloses a method for efficiently selecting user communication base stations in a relay cellular network. In a cellular network comprising a central base station and half-duplex and a decode-and-forward relay, the method comprises the following steps of: aiming at all the users, selecting one user which can realize minimization of the power consumption of the system after the serving central base station of the user is adjusted to the relay; under the condition where the central base station and the relay both are not overloaded, adjusting the user to corresponding relay, and keeping the user unchanged, performing the same operation to the rest of users, comparing the power consumption of connection before adjustment with the power consumption of connection after adjustment, and adopting the connection mode of which the power consumption is minimum. The method provided by the invention is suitable for minimizing the power consumption of the whole system under the condition where load of each base station is not high and rate requirement of each user is guaranteed, can efficiently select the communication base stations of the users, and also can reduce total power consumption of the system.

Description

technical field [0001] The invention relates to a method for efficiently selecting a base station for communicating with a user and reducing the total power consumption of the system in a cellular network using half-duplex, decoding and forwarding relay, considering that the load of the base station is not high, and belongs to mobile communication technology field. Background technique [0002] In recent years, more and more serious environmental problems have been faced by human beings. Energy saving, consumption reduction and emission reduction have become the general trend. As a service industry, communication relies on a large number of industrial products, such as base stations, terminal equipment, transmission lines, etc. These will double with the large-scale expansion of the network market, and consume a lot of energy. Therefore, the concept of "green communication" was born. Green Communications (Green Communications) refers to a new generation of communication ...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/22H04W52/02H04W52/24H04W52/34H04W52/36
CPCH04W28/08H04W40/02H04W40/22H04W48/20H04W52/0203H04W52/243H04W52/346H04W52/367Y02D30/70
Inventor 刘楠黎杰
Owner SOUTHEAST UNIV
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