Abstract
The Society of Automotive Engineers (SAE) J2945 standard prescribes a wireless channel congestion control algorithm for Basic Safety Messages (BSMs) in vehicular safety communication. The algorithm utilizes transmit (Tx) power and rate controls, but we find that the Tx power control hardly engages in most practical vehicular traffic densities. We explain the cause, and propose an alternative way to utilize both control mechanisms. Specifically, we suggest that the Tx power control be first exerted to its limit, followed by the Tx rate control coping with further congestion. We show that the proposed alternative not only addresses the inadequate power control issue, but also leads to better information age performance for vehicles in the most safety-critical distances.
| Original language | English |
|---|---|
| Journal | IEEE Communications Letters |
| DOIs | |
| Publication status | Accepted/In press - 2018 Jan 1 |
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Keywords
- BSM
- congestion control
- Heuristic algorithms
- information age
- Kinematics
- Meters
- Power control
- SAE J2945
- Safety
- Schedules
- Standards
- Tx power control
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering
Cite this
Improving Information Age in SAE J2945 Congestion-Controlled Beaconing. / Lim, Sungheon; Kim, Hyogon.
In: IEEE Communications Letters, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improving Information Age in SAE J2945 Congestion-Controlled Beaconing
AU - Lim, Sungheon
AU - Kim, Hyogon
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The Society of Automotive Engineers (SAE) J2945 standard prescribes a wireless channel congestion control algorithm for Basic Safety Messages (BSMs) in vehicular safety communication. The algorithm utilizes transmit (Tx) power and rate controls, but we find that the Tx power control hardly engages in most practical vehicular traffic densities. We explain the cause, and propose an alternative way to utilize both control mechanisms. Specifically, we suggest that the Tx power control be first exerted to its limit, followed by the Tx rate control coping with further congestion. We show that the proposed alternative not only addresses the inadequate power control issue, but also leads to better information age performance for vehicles in the most safety-critical distances.
AB - The Society of Automotive Engineers (SAE) J2945 standard prescribes a wireless channel congestion control algorithm for Basic Safety Messages (BSMs) in vehicular safety communication. The algorithm utilizes transmit (Tx) power and rate controls, but we find that the Tx power control hardly engages in most practical vehicular traffic densities. We explain the cause, and propose an alternative way to utilize both control mechanisms. Specifically, we suggest that the Tx power control be first exerted to its limit, followed by the Tx rate control coping with further congestion. We show that the proposed alternative not only addresses the inadequate power control issue, but also leads to better information age performance for vehicles in the most safety-critical distances.
KW - BSM
KW - congestion control
KW - Heuristic algorithms
KW - information age
KW - Kinematics
KW - Meters
KW - Power control
KW - SAE J2945
KW - Safety
KW - Schedules
KW - Standards
KW - Tx power control
UR - http://www.scopus.com/inward/record.url?scp=85059274279&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059274279&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2018.2889666
DO - 10.1109/LCOMM.2018.2889666
M3 - Article
JO - IEEE Communications Letters
JF - IEEE Communications Letters
SN - 1089-7798
ER -