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Optimizing Availability in CoMP and CA-enabled HetNets

Research output: Chapter in Book/Report/Conference proceedingConference paper

Jie Jia, Yansha Deng, Jian Chen, Abdol-Hamid Aghvami, Arumugam Nallanathan, Xingwei Wang

Original languageEnglish
Title of host publicationIEEE Proceeding of ICC'2017
Publication statusPublished - 8 Mar 2017

King's Authors


Traditional cellular networks are moving towards heterogenous cellular networks (HetNets) to satisfy the stringent demand for data rates and capacity. To enable the new applications in 5G, such as haptic communications, we face new challenges of achieving high availability with low latency in HetNets. In this paper, we introduce coordinated multi-point (CoMP) and carrier aggregation (CA) techniques in HetNets to guarantee the availability of all UEs, where CoMP improves the single-path availability, and CA enhances availability via multi carrier gain combining. To characterize the availability, we first derive an exact closed-form expression for the availability of a random UE in a CoMP&CA-enabled HetNets. To achieve the maximum UE availability, we formulate a max-min optimization problem. To solve it, we then propose a joint two-step optimization algorithm (JTOA), and our results showcase the effective of our proposed JTOA, and the effective of CoMP in availability improvement in HetNets.

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