CoMP-Based Dynamic Handover for Vehicular VLC Networks

Abstract

Visible light communication (VLC) has emerged as 1 a potential wireless connectivity solution for infrastructure-to-2 vehicle networks where street lights can be configured to serve 3 as access points. In this letter, we propose dynamic soft handover 4 algorithm based on coordinated multipoint (CoMP) transmission. 5 The proposed algorithm takes the rate of change in the received 6 power as an input and accordingly revises the handover margin 7 and time-to-trigger value without explicit information of the vehi-8 cle velocity. Our simulation results demonstrate that the proposed 9 algorithm outperforms conventional CoMP and hard handover 10 and maintains a stable signal quality regardless of vehicle velocity.

Visible Light Communication for Connected Vehicles: How to Achieve the Omnidirectional Coverage?

“…This approach was firstly deployed to model the indoor VLC channels [42]- [44] and experimentally validated in [45], [46]. More recently, it was utilized to model vehicular VLC channels [19], [38], [47]. This approach allows the evaluation of the impulse responses of VLC scenarios with complex geometries and realistic light sources.…”

“…In [31], four PDs are used to prevent outages of a V2V system during lane change in a two-lane straight road. As seen from Table 2, most of the I2V works [32]- [38] assume a single PD. Some of these [32], [35], [36] assume PD location at the front hood of the vehicle which is typically favorable for reception from traffic light while some [34], [37], [38] consider the top of the vehicle which is more suitable for reception from street lights.…”

“…As seen from Table 2, most of the I2V works [32]- [38] assume a single PD. Some of these [32], [35], [36] assume PD location at the front hood of the vehicle which is typically favorable for reception from traffic light while some [34], [37], [38] consider the top of the vehicle which is more suitable for reception from street lights. Such a single PD use can be justified in a single lane road with clear line-of-sight between the vehicle and the road side infrastructure.…”

“…There is already a growing number of works on V2V [15]- [31] and I2V [32]- [38] VLC systems. An overview of existing works on V2V and I2V can be found in Table 1 and Table 2, respectively.…”

Continuous phase modulation with chaotic interleaving for visible light communication systems based on orthogonal frequency division multiplexing

“…It has a wider beam pattern than the Lambertian but with lower modulation bandwidth 7 . The physical layer security of VLC has been extensively addressed in Reference 8, while in Reference 9, the VLC has been adopted to provide Internet services for vehicles where a dynamic soft handover algorithm has been introduced.…”