Research and Implementation of Uplink Synchronization in TD-LTE

Author:

Zhang De Ming1,Yao Sheng1,Li Xiao Wen1

Affiliation:

1. Chongqing University of Posts and Telecommunications

Abstract

To make sure a good communication between the terminal and the base station, synchronization is needed between them. The Uplink Time Alignment has been provided in the long term evolution system (TD-LTE), by which uplink synchronization can be maintained in terminals. In this letter, the concrete implementation of the Uplink Time Alignment in MAC sub-layer of terminals and independently adjustment of uplink timing were designed with research of the Uplink Time Alignment and detailed analysis of the specific applications of Timing Advance Command in the terminal. The proposed implementation can be applied for the development of test instrumentation and TD-LTE ratio frequency conformance.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference7 articles.

1. 3GPP TS 36. 211 V9. 2. 0-2010, Evolved Universal Terrestrial Radio Access(E-UTRA); Physical Channels and Modulation[S].

2. 3GPP TS 36. 213 V9. 2. 0-2010, Evolved Universal Terrestrial Radio Access(E-UTRA); Physical layer procedures[S].

3. 3GPP TS 36. 321 V9. 2. 0-2010, Evolved Universal Terrestrial Radio Access(E-UTRA); Medium Access Control (MAC) protocol specification[S].

4. 3GPP TS 36. 331 V9. 2. 0-2010, Evolved Universal Terrestrial Radio Access(E-UTRA); Radio Resource Control(RRC)[S].

5. 3GPP TS 36. 133 V9. 2. 0-2010, Evolved Universal Terrestrial Radio Access(E-UTRA); Requirements for support if radio resource management[S].

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