QoS guaranteed resource block allocation algorithm for LTE systems

Na Guan*, Yiqing Zhou, Lin Tian, Gang Sun, Jinglin Shi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

32 Citations (Scopus)

Abstract

Using conventional resource allocation algorithms in OFDM systems, each user can employ different Modulation and Coding Scheme (MCS) on allocated subcarriers to achieve good throughput. However, in the downlink transmission of LTE systems, the minimum allocation unit for one user is Scheduling Block (SB) and all SB assigned to one user must adopt the same MCS. Therefore, the application of conventional resource allocation algorithms in LTE results in degraded performance since MCS must be chosen according to the worst SB. To solve this problem, a QoS guaranteed resource block allocation algorithm is proposed for LTE systems, which takes into account both the constraint on MCS and the requirement of Quality of Services (QoS). The proposed algorithm firstly estimates the number of SB required by each user and then allocates SBs to users according to their priorities. Simulation results show that compared to conventional schemes, the proposed algorithm can achieve high throughput as well as significant improvement in guaranteeing users' QoS requirements.

Original languageEnglish
Title of host publication2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
Pages307-312
Number of pages6
DOIs
Publication statusPublished - 2011
Event2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011 - Shanghai, China
Duration: 10 Oct 201112 Oct 2011

Other

Other2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
CountryChina
CityShanghai
Period10/10/1112/10/11

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