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Relay network system and downlink resource allocation method thereof

A technology of resource allocation and relay network, applied in the field of communication, can solve problems such as insufficient utilization of resources and limitation of relay network performance.

Inactive Publication Date: 2011-07-06
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For relay networks, the traditional single-hop link structure is extended to 2 hops, including direct links, backhaul links and access links, and the existing resource allocation methods do not address the wireless resources between these three links. The allocation and coordination of the network are specially designed, and only based on the user's allocation criteria, which will lead to insufficient utilization of resources and greatly limit the performance of the relay network

Method used

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  • Relay network system and downlink resource allocation method thereof
  • Relay network system and downlink resource allocation method thereof
  • Relay network system and downlink resource allocation method thereof

Examples

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Embodiment 1

[0111] In a relay network with 1 base station eNB, 2 relay stations RN1, RN2, and 3 users UE1, UE2, UE3, user 1 and user 2 are served by RN1 and RN2 respectively, and UE3 is directly served by the base station. The system can allocate resources to 5 RBs, denoted as RB1, RB2, RB3, RB4, RB5, and the average obtained resource quantization value of user i is known as T i . In the submission stage, the quantized value of the channel condition of user i on RBk is SINR2 U i，k , have exceeded the basic threshold THb2; in the delivery phase, the quantized channel status value of user i on RBk is SINR1 U i，k , the channel status quantization value of relay station j on the RBk in the transmission phase is SINR1 R j，k , have exceeded the basic threshold THb1.

[0112] 1. Firstly, the resource allocation in the submission stage is carried out. For RB1, the priorities of the three users are respectively obtained according to the following methods:

[0113] P ...

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Abstract

The invention discloses a relay network system and a downlink resource allocation method thereof. The method comprises the following steps that: a base station calculates a priority of a terminal on an allocable resource according to a channel condition quantized value of the terminal requesting a service on the allocable resource in a submission stage and an average acquired resource quantized value of the terminal; the base station allocates the allocable resource in the submission stage to the terminal having the channel condition quantized value of not less than a pre-set first threshold value and having the highest priority obtained by calculation; and the base station allocates the allocable resource in a transmission stage after the allocable resource in the submission stage is allocated. In the relay network system and the downlink resource allocation method thereof provided by the invention, radio resource allocation among three links, namely a direct link, a backhaul link and an access link in a relay network is designed reasonably, so that the throughput of a cell can be improved, and spectrum efficiency is increased.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a relay network system and a downlink resource allocation method thereof. Background technique [0002] As an emerging technology, relay technology has attracted more and more attention and is regarded as a key technology of B3G / 4G. Through the relay technology, the traditional single-hop link can be divided into multiple multi-hop links. Due to the shortened distance, this will greatly reduce the path loss, help to improve the transmission quality, and expand the communication range, thus providing users with more Faster and better service. [0003] In the relay network, the link between the relay station participating users and the relay station is called the access link (Access Link), the link between the relay station and the base station is called the backhaul link (Backhaul Link), and the base station participates in the service The link between the user and the base st...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W88/08H04B7/26
CPCH04W36/00H04W88/04H04W72/10H04W72/56
Inventor 盛敏姚君梁枫毕峰袁明杨瑾吴栓栓赵楠
Owner ZTE CORP
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