A Defensive Scheduling Scheme to Accommodate Random Selection Devices in 5G NR V2X
- Authors
- Yoon, Youngjoon; Seon, Hyeonji; Kim, Hyogon
- Issue Date
- 6월-2021
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Sensors; Monitoring; Safety; Performance evaluation; Long Term Evolution; Standards; Roads; 5G; NR; V2X; sidelink mode~2; random selection devices; resource allocation; defensive scheduling
- Citation
- IEEE COMMUNICATIONS LETTERS, v.25, no.6, pp.2068 - 2072
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE COMMUNICATIONS LETTERS
- Volume
- 25
- Number
- 6
- Start Page
- 2068
- End Page
- 2072
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/127933
- DOI
- 10.1109/LCOMM.2021.3057451
- ISSN
- 1089-7798
- Abstract
- The newly completed 3GPP Release 16 for 5G New Radio (NR) vehicle-to-everything (V2X) communication assumes that all participating devices can continually sense the channel activities in terms of resource use. However, many non-vehicular devices such as smartphones of vulnerable road users (VRUs) and road-embedded sensors are constrained by battery, and cannot afford such "always-on" sensing. The deficiency will have undesirable impact on the existing resource allocation algorithm in the envisioned NR V2X integrated framework. As we start the efforts towards Release 17, therefore, there is a pressing need to develop a solution to smoothly integrate the limited-sensing devices into the framework. This letter develops a solution based on the new features available in Release 16 NR Sidelink Mode 2, such as resource reservation pointers and resource pre-emption checks. We demonstrate that a defensive transmission strategy employed by the full-sensing devices that jitters their transmissions around the resource double-booked by the limited-sensing devices can significantly mitigate the packet delivery performance degradation for both the full-sensing and the limited-sensing devices.
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