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Resource allocation under delay guarantee constraints for heterogeneous visible light and RF femtocells

Resource allocation under delay guarantee constraints for heterogeneous visible light and RF femtocells
Resource allocation under delay guarantee constraints for heterogeneous visible light and RF femtocells
The resource-allocation (RA) problems of mobile terminals (MTs) are investigated in a heterogeneous wireless network, where both a visible light communication system and an RF femtocell system are deployed in a room. We consider diverse quality-of-service requirements in terms of the data rate, fairness, and statistical delay requirements. Inspired by the concept of effective capacity, we formulate our optimization problems applying ?-proportional fairness while satisfying specific statistical delay constraints. Two types of MTs, namely, multihoming MTs and multimode MTs, are considered, where multihoming MTs have the capability of aggregating resources from different networks, whereas the multimode MTs always select a single network for their connection. Our optimization procedure solves the RA probability problem for multihoming MTs with the aid of a decentralized algorithm. By contrast, our optimization problem involves both network selection and RA probability optimization for multimode MTs, which may be regarded as a mixed-integer nonlinear problem. Since this problem is computationally intractable, a suboptimal decentralized method is proposed for solving it. Simulation results are also presented for clarifying the performance of the proposed algorithm. It is shown that the multimode MTs are capable of achieving similar performance to that of the multihoming MTs when the statistical delay requirements are loose. However, as expected, the multihoming MTs attain a better performance when we tighten the delay requirements.
1-30
Jin, Fan
2494e7f1-0077-4ee7-a274-65cb7a8a5fbd
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Jin, Fan
2494e7f1-0077-4ee7-a274-65cb7a8a5fbd
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Jin, Fan, Zhang, Rong and Hanzo, Lajos (2015) Resource allocation under delay guarantee constraints for heterogeneous visible light and RF femtocells. IEEE Transactions on Wireless Communications, 14 (2), 1-30. (doi:10.1109/TWC.2014.2363451).

Record type: Article

Abstract

The resource-allocation (RA) problems of mobile terminals (MTs) are investigated in a heterogeneous wireless network, where both a visible light communication system and an RF femtocell system are deployed in a room. We consider diverse quality-of-service requirements in terms of the data rate, fairness, and statistical delay requirements. Inspired by the concept of effective capacity, we formulate our optimization problems applying ?-proportional fairness while satisfying specific statistical delay constraints. Two types of MTs, namely, multihoming MTs and multimode MTs, are considered, where multihoming MTs have the capability of aggregating resources from different networks, whereas the multimode MTs always select a single network for their connection. Our optimization procedure solves the RA probability problem for multihoming MTs with the aid of a decentralized algorithm. By contrast, our optimization problem involves both network selection and RA probability optimization for multimode MTs, which may be regarded as a mixed-integer nonlinear problem. Since this problem is computationally intractable, a suboptimal decentralized method is proposed for solving it. Simulation results are also presented for clarifying the performance of the proposed algorithm. It is shown that the multimode MTs are capable of achieving similar performance to that of the multihoming MTs when the statistical delay requirements are loose. However, as expected, the multihoming MTs attain a better performance when we tighten the delay requirements.

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More information

Accepted/In Press date: 10 October 2014
e-pub ahead of print date: 22 October 2014
Published date: 6 February 2015
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 365518
URI: https://eprints.soton.ac.uk/id/eprint/365518
PURE UUID: b3a2787b-953d-4ddc-b8a0-206322753664
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 09 Jun 2014 09:12
Last modified: 06 Jun 2018 13:15

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Contributors

Author: Fan Jin
Author: Rong Zhang
Author: Lajos Hanzo ORCID iD

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