Performance analysis of ARQ schemes for UTRA TDD ad hoc mode

Inter-vehicle communication (IVC) has become a research challenge of major importance during the last few years. Within the FIeetNet Project a novel inter-vehicle mobile ad hoc network is developed to interconnect vehicles and roadside gateways via a mobile Internet. The FIeetNet system is based on UMTS terrestrial radio access time division duplex (UTRA TDD). Among others, FIeetNet supports major services in road traffic telematics and mission critical services, like emergency notifications and services for cooperative driver assistance. This services put very high requirements on the constrained air interface and the used protocols. Within this work we provided an outlook of the proposed automatic repeat request (ARQ) method standardized for UTRA TDD. We calculate both the analysis and simulation of usability in terms of performance overhead of two basic ARQ schemes: SR and GBN, for the UTRA TDD ad hoc mode in the FIeetNet Project.