A joint resource allocation scheme for OFDMA–based wireless pervasive networks with carrier aggregation. (30th May 2013)

• Record Type: Journal Article
• Authors: Wu, Fan; Leng, Supeng; Mao, Yuming; Huang, Xiaoyan
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 13:Number 2(2013)
• Page Start: 109
• Page End: 119
• Publication Date: 2013-05-30
• Subjects: carrier aggregation capability -- OFDMA -- network utility -- WSTM -- dynamic spectrum resources assignment -- adaptive power allocation -- component carrier switch -- resource allocation -- wireless pervasive networks -- wireless networks -- WPNs -- average throughput -- transmission fairness; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

The mixture of users with different capabilities of Carrier Aggregation (CA) presents new challenges to optimise the performance of the next generation wireless pervasive networks. This paper focuses on the joint resources allocation for OFDMA–based multi–carrier system, with the objective of maximising the network utility. Distinguished from many existing methods, our approach combines dynamic spectrum resources assignment and adaptive power allocation technologies for the CA networks. We propose a novel scheme with Joint Component Carrier (CC), Resource Block (RB) and Power Allocation (JCRPA), where the Minimising System Utility Loss (MSUL) algorithm is developed to allocate both CCs and RBs for different users with various CA capabilities. Furthermore, with the cooperation of the JCRPA scheme, a CC–switch control mechanism is devised to reduce the overhead due to frequent CC switching. Simulation results demonstrate that JCRPA is able to significantly improve the system performance in terms of network utility, average throughput and transmission fairness.