LTE-A系统基于协调的上行传输方案

谢亚男; 权威; 苗金华; 张戬; 常永宇

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Coordination-based Uplink Transmission for LTE-A System

首发时间：2015-10-08

Xie Yanan ¹
Xie Yanan(1991-),Female,Student,Wireless Communication
Quan Wei ² Miao Jinhua ² Zhang Jian ² Chang Yongyu ¹
Chang Yongyu(1963-), Female, Professor, Wireless Communication

1、Beijing University of Posts and Telecommunications, 100876
2、Beijing Institute, Huawei Technologies Co., Ltd, 100085

Abstract：The conventional uplink transmission method suffers from high latency which is not enough to guarantee the requirement of latency sensitive applications, such as Voice over Internet Protocol (VoIP) and real time gaming. In order to decrease the delay, in the Long Term Evolution Advanced (LTE-A) system, contention-based (CB) uplink transmission solution is proposed. This method allocates a contention-based Grant (CB Grant) to a group of uplink synchronized users (i.e., a CB user group). However, collision probability increases with the load due to the same uplink resources shared by several users. In this paper, we proposed a coordination-based uplink transmission method to avoid collisions. The eNB configures the coordination resource to a group of users which can listen to each other by using Device-to-Device (D2D) communication, and one shared Physical Uplink Shared Channel (PUSCH) resources. When a user equipment (UE) has data to transmit, it will send a request and listen on the coordination resource, then UE sending on the coordination resource with the highest priority can transmit uplink data on the shared PUSCH resource. The simulation results demonstrate that our proposed method can improve resource utilization and reduce latency.

keywords： coordination-based uplink transmission D2D LTE-A

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LTE-A系统基于协调的上行传输方案

谢亚男 ¹
Xie Yanan(1991-),Female,Student,Wireless Communication
权威 ² 苗金华 ² 张戬 ² 常永宇 ¹
Chang Yongyu(1963-), Female, Professor, Wireless Communication

1、北京邮电大学, 100876
2、华为技术有限公司北京研究所, 100085

摘要：传统的上行传输由于时延高而不能满足延迟敏感业务的需求。为了降低时延，LTE-A系统中提出了基于竞争的上行传输方案。然而，由于多个用户共享相同的上行链路资源，碰撞概率过大。本文中提出了基于协调的上行传输方案，以避免碰撞。基站为一组可以利用D2D相互倾听的用户配置协调资源。当用户设备(UE)发送数据时，它会先在预配置的协调资源上发送请求，并同时监听该资源。在优先级最高的协调资源上发送请求的UE可以发送上行数据。仿真结果表明，我们所提出的方案可以提高资源利用率，同时减少延迟。

关键词：无线通信技术基于协调上行传输

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Xie Yanan,Quan Wei,Miao Jinhua,et al. Coordination-based Uplink Transmission for LTE-A System[EB/OL]. Beijing:Sciencepaper Online[2015-10-08]. https://www.paper.edu.cn/releasepaper/content/201510-1.

No.4656222109575214****

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论文编号	201510-1
论文题目	LTE-A系统基于协调的上行传输方案
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