查看文章

The onset of network coded cooperation (NCC) and its applications in vehicle-to-everything (V2X) scenarios have allowed vehicular networks to relish both reliability and throughput which are the key factors in an on-road scenario. However, a typical NCC based network uses a time division multiple access (TDMA) based data transmission aided by a relay employing a fixed relaying scheme. This puts a concern on the system's quality-of-service (QoS). We thus propose a dual threshold-based hybrid (DTH) relaying scheme where the relay vehicle dynamically decides the relaying scheme or asks for a re-transmission to improve the QoS. The decision to select a relaying scheme is based on the instantaneous signal-to-noise ratio (SNR). Consequently, an acknowledgement frame structure is proposed to convey the crucial information to the destinations which are required during data extraction. A variable beacon …