An Improved Approach of Sending BSR and SR Based on MAC Layer in LTE System

Author

Duan, Xiuwen ; Zhang, Demin ; Li, Xiaowen

Author_Institution

Chongqing Key Lab. of Mobile Commun., ChongQing Univ. of Posts & Telecommun., Chongqing, China

fYear

2011

fDate

29-31 July 2011

Firstpage

520

Lastpage

523

Abstract

The Buffer Status Report (BSR) and Scheduling Request (SR) are important procedures based on Medium Access Control (MAC) layer in Long Term Evolution (LTE) system. First, we study the BSR, SR and Semi-Persistent Scheduling (SPS) separately, then illustrate the priority of BSR and other data when sending MAC PDUs. The issue about the priority has been definitely defined by 3GPP, but it doesn´t explain the reason, the article made a detailed analysis of it. The UE will send BSR and SR for gaining radio resources, the resources may be wasted if they exist at the same time. Finally we proposed a solution of deciding whether triggering BSR and SR in SPS and a solution of conflicts between padding BSR and other kinds of BSR.

Keywords

3G mobile communication; Long Term Evolution; access protocols; mobile computing; 3GPP; BSR triggering; LTE system; MAC-PDU; SPS; SR triggering; buffer status report; long term evolution system; medium access control layer; radio resource; scheduling request; semipersistent scheduling; 3G mobile communication; Dynamic scheduling; Protocols; Radio access networks; Strontium; BSR; LTE; MAC; SPS; SR;

fLanguage

English

Publisher

ieee

Conference_Titel

Business Computing and Global Informatization (BCGIN), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4577-0788-9

Electronic_ISBN

978-0-7695-4464-9

Type

conf

DOI

10.1109/BCGIn.2011.137

Filename

6003964