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Dual-Scheduler Design for C/U-Plane Decoupled Railway Wireless Networks
- Source :
- IEEE Transactions on Mobile Computing. 16:1842-1855
- Publication Year :
- 2017
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2017.
-
Abstract
- Previously, we have proposed a C/U-plane (Control/User plane) decoupled railway wireless network in which higher frequency bands are adopted by small cells to provide wider available spectra for the U-plane of passengers’ services. In order to guarantee reliable connectivity to wayside eNodeBs (eNBs), an onboard mobile relay (MR), consisting of two components, namely, MR-UE (User Equipment) and MR-AP (Access Point), is employed to forward passengers’ services over backhaul links between MR-UE and wayside eNBs. The remaining problem here is how to utilize spectra effectively and efficiently under this new configuration. Since a given wayside eNB hosts only one single accessed user most of the time, we design an additional uplink scheduler for the MR-UE to self-manage the usage of uplink resources, avoiding the complicated uplink grant procedure commonly used in the conventional cellular systems. Moreover, we develop eNB schedulers to coordinate the spectra in small cells. To deal with occasional multi-user scenarios, we propose an uplink scheduler switcher for the macro cell to judge which uplink scheduler should be activated. Furthermore, an uplink resource allocation scheme with high spectrum efficiency is deliberately designed for the new dual-scheduler configuration. Finally, we carry out theoretical analysis and numerical simulations to demonstrate the effectiveness of our proposed scheme.
- Subjects :
- Computer Networks and Communications
Wireless network
Computer science
business.industry
Macro cell
05 social sciences
Real-time computing
050801 communication & media studies
020206 networking & telecommunications
02 engineering and technology
Spectral efficiency
Radio spectrum
Scheduling (computing)
Backhaul (telecommunications)
0508 media and communications
User equipment
Telecommunications link
0202 electrical engineering, electronic engineering, information engineering
Resource allocation
Mobile telephony
Electrical and Electronic Engineering
business
Software
Computer network
Subjects
Details
- ISSN :
- 15361233
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Mobile Computing
- Accession number :
- edsair.doi...........7204d513340eecd7ba069d3298b8f48e