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Optimal ALOHA-like random access with heterogeneous QoS guarantees for multi-packet reception aided visible light communications

Optimal ALOHA-like random access with heterogeneous QoS guarantees for multi-packet reception aided visible light communications
Optimal ALOHA-like random access with heterogeneous QoS guarantees for multi-packet reception aided visible light communications
There is a paucity of random access protocols designed for alleviating collisions in visible light communication (VLC) systems where carrier sensing is hard to be achieved due to the directionality of light. To resolve the problem of collisions, we adopt the successive interference cancellation (SIC) algorithm to enable the coordinator to simultaneously communicate with multiple devices, which is referred to as the multi-packet reception (MPR) capability. However, the MPR capability could be fully utilized only when random access algorithms are accordingly designed. Considering the characteristics of the random access VLC system with SIC, we propose a novel effective capacity (EC)-based ALOHA-like random access algorithm for MPR-aided uplink VLC systems having heterogeneous quality-of-service (QoS) guarantees. Firstly, we model the VLC network as a conflict graph and derive the EC for each device. Then, we formulate the VLC QoS-driven random access problem as a saturation throughput maximization problem subject to multiple statistical QoS constraints. Finally, the resultant non-concave optimization problem (OP) is solved by a memetic search algorithm relying on invasive weed optimization and differential evolution (IWO-DE). We demonstrate that our derived EC expression matches the Monte Carlo simulation results accurately, and the performance of our proposed algorithm is competitive.
Visible light communication (VLC), multi-packet reception (MPR), random access, heterogeneous QoS, effective capacity (EC), saturation throughput maximization.
Zhao, Linlin
2670a62b-278d-4ecc-b9ea-5f5979b80961
Chi, Xuefen
d242a2e9-9f91-4291-8cfc-028ccd7e7628
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Zhao, Linlin
2670a62b-278d-4ecc-b9ea-5f5979b80961
Chi, Xuefen
d242a2e9-9f91-4291-8cfc-028ccd7e7628
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60

Zhao, Linlin, Chi, Xuefen and Yang, Shaoshi (2016) Optimal ALOHA-like random access with heterogeneous QoS guarantees for multi-packet reception aided visible light communications. IEEE Transactions on Wireless Communications. (doi:10.1109/TWC.2016.2608956). (In Press)

Record type: Article

Abstract

There is a paucity of random access protocols designed for alleviating collisions in visible light communication (VLC) systems where carrier sensing is hard to be achieved due to the directionality of light. To resolve the problem of collisions, we adopt the successive interference cancellation (SIC) algorithm to enable the coordinator to simultaneously communicate with multiple devices, which is referred to as the multi-packet reception (MPR) capability. However, the MPR capability could be fully utilized only when random access algorithms are accordingly designed. Considering the characteristics of the random access VLC system with SIC, we propose a novel effective capacity (EC)-based ALOHA-like random access algorithm for MPR-aided uplink VLC systems having heterogeneous quality-of-service (QoS) guarantees. Firstly, we model the VLC network as a conflict graph and derive the EC for each device. Then, we formulate the VLC QoS-driven random access problem as a saturation throughput maximization problem subject to multiple statistical QoS constraints. Finally, the resultant non-concave optimization problem (OP) is solved by a memetic search algorithm relying on invasive weed optimization and differential evolution (IWO-DE). We demonstrate that our derived EC expression matches the Monte Carlo simulation results accurately, and the performance of our proposed algorithm is competitive.

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1609.02227v1.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 10 September 2016
Keywords: Visible light communication (VLC), multi-packet reception (MPR), random access, heterogeneous QoS, effective capacity (EC), saturation throughput maximization.
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 396510
URI: http://eprints.soton.ac.uk/id/eprint/396510
PURE UUID: 3b663875-f5a9-4a05-8424-d18e322bed8b

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Date deposited: 10 Jun 2016 08:58
Last modified: 15 Mar 2024 00:54

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Contributors

Author: Linlin Zhao
Author: Xuefen Chi
Author: Shaoshi Yang

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