1. Cluster-based Handoff Scheme Design for Platoons in Cellular V2X Networks
- Author
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Shuhang Zhang, Haodong Wang, Boya Di, and Lingyang Song
- Subjects
Markov chain ,Computer science ,business.industry ,Markov process ,Base station ,symbols.namesake ,Handover ,Cluster (physics) ,symbols ,Overhead (computing) ,Resource allocation ,Platoon ,business ,Computer network - Abstract
In this paper we propose a cluster-based platoon handoff protocol (CPHP), in which the platoon is divided into clusters to minimize its handoff delay between two adjacent cells. Via the vehicle-to-vehicle (V2V) communications, multiple clusters are constructed within one platoon and only the cluster head (CH) communicates with the base station (BS) via the vehicle-to-infrastructure (V2I) communications. In this way, the number of V2I links can be greatly saved and the signaling overhead is reduced, thereby shortening the handoff delay. Specifically, we formulate a delay minimization problem based on a discrete-time Markov chain and then optimize the number of clusters and spectrum resource allocation. Simulation results demonstrate a significant decrease in the handoff delay of the platoon. The optimal expected delay under a platoon with 50 vehicles by utilizing the proposed CPHP is 15% smaller than that of the traditional handoff scheme. more...
- Published
- 2021
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