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Double-bounce balance distributed scheduling algorithm based on relay cache in relay enhanced cellular system

A scheduling algorithm and cellular system technology, applied in electrical components, wireless communication, etc., can solve the problems of not considering the balance of throughput, increase of relay UE latency, waste of backhaul link resources, etc.

Inactive Publication Date: 2014-07-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This solution will increase the waiting delay of the relay UE, and will waste backhaul subframe resources when the quality of the backhaul link is poor. Similarly, when the quality of the access link is poor, it will cause a large backlog of data at the relay, which is also wasted Valuable backhaul link resource
At the same time, since the solution does not consider the balance of backhaul and access link throughput, when the channel quality of any hop in the two-hop link is poor, it is easy to cause resource waste

Method used

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  • Double-bounce balance distributed scheduling algorithm based on relay cache in relay enhanced cellular system
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  • Double-bounce balance distributed scheduling algorithm based on relay cache in relay enhanced cellular system

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Embodiment Construction

[0064] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0065] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0066] according to figure 2 It can be seen that the core idea of ​​the two-hop balanced distributed scheduling algorithm TBDRC based on relay cache information is to adaptively adjust the throughput of the first hop backhaul link and the second hop access link according to the cache information at the relay, so that the two The throughput of hops is balanced to achieve efficient resource utilization and improve the throughput of the entire ...

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Abstract

The invention provides a double-bounce balance distributed scheduling algorithm TBDRC based on a relay cache to achieve balance between the first bounce backhaul link throughput between a base station eNB and a relay and a second bound access link throughput between the relay and relay UE, so that the resource utilization rate and cell throughput of a relay enhanced cellular system are increased. According to the algorithm, the data volume in the relay cache is updated according to the ACK feedback information of the relay UE, normal transmission of data is guaranteed, repeated correct transmission of the same data is avoided, resource waste of a backhaul link can be reduced, and the throughput of an access link is further increased.

Description

technical field [0001] The invention relates to the technical field of wireless mobile communication, in particular to a two-hop balanced distributed scheduling algorithm based on relay cache information in a relay-enhanced cellular system. Background technique [0002] With the advent of the post-3G era, wireless communication systems have put forward higher requirements for network throughput, spectrum efficiency, and cell coverage. If only relying on the traditional cellular network architecture, the goal can only be achieved by deploying base stations (eNBs) more densely. However, the high cost of equipment makes the cost performance unsatisfactory. However, by adopting a simple-function and low-cost relay station (relay), the signal from the base station or user (UE) is forwarded to a distant destination after enhanced processing, which can greatly save costs and effectively improve system capacity and The purpose of improving cellular coverage. [0003] like figure ...

Claims

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Application Information

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IPC IPC(8): H04W72/12
Inventor 何春崔海霞冯钢
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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