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Upstream resource distribution method capable of considering both throughput capacity and fairness in TD-LTE-Advanced (Time Division-Long Term Evolution-Advanced) relay system

A technology of resource allocation and relay system, applied in electrical components, wireless communication and other directions, can solve problems such as adjacent cell interference, and achieve the effects of increased throughput, large throughput, and high fairness index

Inactive Publication Date: 2015-03-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the center of the cell, technologies such as OFDMA, MIMO, and transmit diversity at the base station in LTE can be used, but for the edge of the cell with the same high-throughput service requirements, these technologies cannot solve the problem of interference from neighboring cells

Method used

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  • Upstream resource distribution method capable of considering both throughput capacity and fairness in TD-LTE-Advanced (Time Division-Long Term Evolution-Advanced) relay system
  • Upstream resource distribution method capable of considering both throughput capacity and fairness in TD-LTE-Advanced (Time Division-Long Term Evolution-Advanced) relay system
  • Upstream resource distribution method capable of considering both throughput capacity and fairness in TD-LTE-Advanced (Time Division-Long Term Evolution-Advanced) relay system

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Experimental program
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specific Embodiment approach 1

[0037] Specific implementation mode one: the uplink resource allocation method in the TD-LTE-Advanced relay system described in this implementation mode, which takes into account both throughput and fairness, includes the following steps:

[0038] Step 1. The base station dynamically allocates frequency resources for the relay and direct transmission users according to the service demands of the direct transmission users and the relay users;

[0039] Step 2. The uplink relay in the uplink subframe of the access link allocates resources for the relay users according to the priority of the proportional fairness algorithm, and at the same time, the base station on the direct transmission link adopts the proportional fairness algorithm to allocate resources for the direct transmission users;

[0040] Step 3: In the uplink subframe of the backhaul link, the base station allocates resources for the relay user based on the queue information of the relay user buffered in the relay, and...

specific Embodiment approach 2

[0041] Embodiment 2: This embodiment is a further limitation of the uplink resource allocation method in the TD-LTE-Advanced relay system described in Embodiment 1, which takes into account both throughput and fairness.

[0042] The allocation principle of the initial division of the frequency resources of the direct transmission user and the relay user in the step 1 is:

[0043] The initial division steps are as follows:

[0044] a. Parameter setting. Let A be the set of resource blocks allocated to direct transmission users, ε r is the set of resource blocks allocated to relay r, let c rn for ε r The carrying capacity of resource block n in . The initial setting is A=[1,2,…,M], C r is the sum of the service data buffered in the user queue of the relay user belonging to the relay r at the base station, φ d It is the sum of the service data buffered in the user queue of the direct transmission user at the base station.

[0045] b. Allocate a resource block contiguous ...

specific Embodiment approach 3

[0048] Specific implementation mode three: combination figure 2 This embodiment is described. This embodiment is a further limitation of the uplink resource allocation method in the TD-LTE-Advanced relay system described in the first embodiment, which takes into account both throughput and fairness.

[0049] The idea of ​​resource allocation method for access link and direct link in step 2:

[0050] Select the maximum gain in the priority matrix to complete the correspondence between UE-RB (user-resource block), and then consider the resource blocks continuous with the resource block according to the continuity requirements to meet the needs of the user as much as possible. If the user's needs can be met, the user is considered to end this resource allocation. If the wireless resources allocated to the user have reached the maximum number of resource blocks that can be obtained by each user, even if there is no resource block that can satisfy the user Requirements, it is sti...

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Abstract

The invention discloses an upstream resource distribution method capable of considering both throughput capacity and fairness in a TD-LTE-Advanced relay system, belongs to the technical field of relay in a wireless communication system, and aims to provides a reasonable upstream resource distribution algorithm to solve the problems that the existing resource distribution algorithm in the relay system is high in expense and does not consider both fairness and throughput capacity. The upstream resource distribution method comprises the following steps: a base station dynamically distributes the frequency resource for relay users and direct transmitting users according to service quantity demanded of the direct transmitting users and the relay users; the relay in the uplink subframe accessing to the link adopts the dynamic resource distribution method to invoke the relay users; the base station in the direct transmitting link adopts the dynamic resource distribution method to invoke the direct transmitting users; the base station in the uplink subframe of the return link distributes the resource for the relay users based on the queue information of the relay users cached in the relay, and meanwhile the base station invokes the direct transmitting users by the dynamic resource distribution method. The upstream resource distribution method disclosed by the invention can promote the performance of the relay users better, and can meet the fairness for the users.

Description

technical field [0001] The invention belongs to the field of relay technology in a wireless communication system, and in particular relates to an uplink resource allocation method in a TD-LTE-Advanced relay system that takes both throughput and fairness into account. Background technique [0002] In recent years, people's demand for high data rate, high service quality, and business diversification in mobile communication has been increasing. In order to cope with this trend, the Third Generation Partnership Project (3 rd The Generation Partnership Project, 3GPP) organization proposes an LTE-Advanced system based on LTE (Long Term Evolution). The LTE-Advanced system has strong compatibility with LTE, and proposes performance indicators of a downlink peak rate exceeding 1Gbit / s and an uplink peak rate exceeding 500Mbit / s. In the center of the cell, technologies such as OFDMA, MIMO, and transmit diversity at the base station in LTE can be used. However, for the edge of the c...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/04
Inventor 吴宣利赵婉君李卓明吴玮沙学军
Owner HARBIN INST OF TECH
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