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Throughput Optimization in WLAN/Cellular Integrated Network Using Partially Overlapped Channels
- Source :
- IEEE Transactions on Wireless Communications. 17:157-169
- Publication Year :
- 2018
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2018.
-
Abstract
- The wireless network that integrates a heterogeneous cellular network and a WLAN is referred to as a WLAN/cellular integrated network (WCIN). In a fourth generation WCIN, in order to achieve collision-avoidance between the LTE-A and IEEE 802.11 family, some interference-free mechanisms, such as carrier sense adaptive transmission and listen-before-talk, are proposed. However, the interference-free medium access mechanisms leave some unexploited partially overlapped 802.11ac channels, which result in a waste of spectrum. In this paper, we propose an interference-tolerant medium access method to optimize the WCIN throughput by utilizing those partially overlapped channels (POCs). First, we show the feasibility of enhancing WLAN throughput by utilizing 802.11ac POCs in a WCIN. Second, we mathematically model the partial overlap when an 802.11ac channel is partially overlapping with an LTE-A component carrier. Third, we propose an interference-tolerant medium access mechanism to optimize the WCIN throughput. The interference-tolerant one ensures that the interference to LTE-A users is tolerable in a given WCIN. Finally, we construct a hardware-in-the-loop testbed to evaluate and compare our proposed mechanism with three other state-of-the-art mechanisms. The experimental results show that our approach achieves at most 39% more throughput than one of the state-of-the-art collision-avoidance mechanisms regarding the entire WCIN.
- Subjects :
- 0209 industrial biotechnology
Channel allocation schemes
business.industry
Wireless network
Computer science
Applied Mathematics
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS
Testbed
020206 networking & telecommunications
Throughput
02 engineering and technology
Computer Science Applications
020901 industrial engineering & automation
Transmission (telecommunications)
0202 electrical engineering, electronic engineering, information engineering
Cellular network
Electrical and Electronic Engineering
business
Throughput (business)
Computer network
Communication channel
Subjects
Details
- ISSN :
- 15361276
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Wireless Communications
- Accession number :
- edsair.doi...........cf0d0ce3f477046e8818cb754e2a9d4d