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Resource allocation method in wireless communication system and system

A wireless communication system and wireless resource technology, applied in the field of resource allocation, can solve problems such as inability to effectively respond to group call requests, inability to adopt some kind of interference suppression, etc., to achieve the effect of avoiding collisions and ensuring QoS

Inactive Publication Date: 2010-07-07
BEIJING XINWEI TELECOM TECH
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Problems solved by technology

In the case of the same-frequency networking, when the resource blocks configured by the group call resources of adjacent base stations on the same frequency completely or partially overlap with the group call resource blocks configured by this base station, then for one of the cells that are close to two cells If a certain group call member at the boundary cannot effectively use the group call signal of the adjacent base station by using some useful signal combination method, and at the same time cannot use some interference suppression algorithm to eliminate this effect, the adjacent base station The group call signal may cause strong interference to the useful group call signal of the current user
[0004] In addition, if the base station does not reserve enough channels and power resources for possible incoming group call requests, it may not be able to respond quickly and effectively to new incoming group call requests

Method used

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  • Resource allocation method in wireless communication system and system
  • Resource allocation method in wireless communication system and system
  • Resource allocation method in wireless communication system and system

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Taking an OFDMA system as an example, its time-frequency resources are as figure 1 As shown, a smallest rectangular unit represents a subcarrier (vertical) within a symbol time interval (horizontal), we call it a time-frequency grid, or a resource unit, which represents the system The smallest unit of time-frequency resources. Generally, a time-frequency resource with a fixed size is regarded as a subchannel and used as the smallest unit of resource allocation. When allocating resources for call requests, the base station allocates appropriate time-frequency resources and appropriate power according to the characteristics of different call services to meet the QoS of call services, and at the same time avoid wasting bandwidth and power resources as much as possible. The service can be a single call service or a group cal...

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Abstract

The invention provides a resource allocation method in wireless communication system, comprising the following steps: a, a base station sends group call resource information to all adjacent base stations with the same frequency; b, the base station receives group call resource information from all the adjacent base stations; c, the base station allocates wireless resource for the current call request according to the group call resource information of the base station and the adjacent base stations with the same frequency, the current wireless resources state and the current call request. The invention also provides a wireless communication system which correspondingly realizes the resource allocation. After adopting the invention, through interacting the group call resource information within the base station between base stations, the collision of the wireless resource can be avoided when reservation and allocation of the call resources are conducted; meanwhile, through reserving the group call resources, the needed resources can be rapidly allocated for new-arrival group request of the base station.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for resource allocation in a wireless communication system with same-frequency networking. Background technique [0002] In a wireless communication system, a central resource allocation module allocates resources for wireless terminals in the network. In this invention, the general term "resource" should be understood as "wireless resource". For OFDMA system, it refers to the frequency and / or time resource reserved or allocated for the wireless terminal to communicate with the base station. In a CDMA (Code Division Multiple Access) system, wireless resources also include orthogonalized spreading code resources, and in an SDMA (Space Division Multiple Access) system, wireless resources also include space resources. Taking the OFDMA system as an example, the smallest unit of wireless resources can be called a resource unit, which is composed of a ...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W28/26
Inventor 黄其华李航
Owner BEIJING XINWEI TELECOM TECH
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