Smoothing the Drive: Critical Access for Intelligent Transportation Systems

Ruki Harwahyu, Jonathan Loo, Ray Guang Cheng, Yu Yi Chu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Long-term evolution (LTE)-based vehicular-to-everything (V2X) service is one of the promising technologies for supporting intelligent transportation systems (ITSs). LTE adopts a request-grant approach for allocating wireless resources. Each user follows a contention-based random access (RA) procedure to transmit its request. However, this procedure may result in unbounded delay if too many users compete for limited RA resources. Therefore, prioritized critical access in the LTE RA procedure is required to differentiate critical V2X services from noncritical ones.

Original languageEnglish
Article number7907251
Pages (from-to)60-68
Number of pages9
JournalIEEE Vehicular Technology Magazine
Issue number2
Publication statusPublished - Jun 2017


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