In this paper, we propose a scheme named “Adaptive Clustering and Scheduling for Dynamic Region-based Resource Allocation” (ACSR) to solve the problems in 3GPP’s fixed zone resource allocation schemes for 3GPP’s infrastructure-aided Vehicle-to-Vehicle (V2V) communication technology:Cellular V2V or C-V2V communications. In 3GPP’s fixed-zone resource allocation schemes, the radio channels are separated into groups each of which is reused amid pre-determined geographical zones with a fixed area and locations regardless of the number of vehicles sharing the group of channels assigned to a zone. On the other hand, in the proposed ACSR scheme, vehicles are dynamically and adaptively clustered by their geographical locations and banks of radio channels are reused amid clusters. This flexibility of vehicle clustering in which the number of vehicles in a cluster could fit the number of channels in a re-usable group of channels largely reduces the chance of co-channel interference and hence improve the transmission performance. A vehicle in a cluster is elected to be the cluster head for assigning radio channels to those which in its cluster are about to transmit so that both the overhead of signaling transmissions and computation complexity at eNB/gNB are reduced. The performance of ACSR are compared with several other typical resource allocation schemes by extensive simulations under the simulation scenario setting defined by 3GPP specifications. The performance metrics are (1) the average computation offloading ratio (COR) in reference to the centralized brute-force optimization scheme at eNB/gNB and (2) the average successful packet reception ratio (PRR) defined in 3GPP specification. The average COR for ACSR is 30.9%. The ACSR’s average PRR improvements over a typical fixed zone resource allocation scheme, the FZRA scheme, are greater than 5%, 10% and 21.8% when the transmission distance is 120 meters, 180 meters, and 320 meters, respectively. Simulation results shown that in general the ACSR scheme significantly improves the performance as compared to 3GPP’s fixed zone resource allocation schemes.

在本文中，我们提出了一种名为“基于动态区域的资源分配的自适应群集和调度”（ACSR）的方案，以解决3GPP的基础设施辅助车对车（V2V）通信中3GPP固定区域资源分配方案中的问题。技术：蜂窝V2V或C-V2V通信。在3GPP的固定区域资源分配方案中，将无线电信道分为多个组，每个组在具有固定区域和位置的预定地理区域中重用，而与共享分配给一个区域的信道组的车辆数量无关。另一方面，在所提出的ACSR方案中，车辆通过其地理位置而动态地和自适应地集群化，并且无线电信道的组在集群中被重用。车辆群集的这种灵活性（其中群集中的车辆数量可以适合可重用通道组中的通道数量）大大减少了同频道干扰的机会，从而提高了传输性能。集群中的车辆被选为集群头，用于为其集群中将要发射的信道分配无线电信道，从而降低了信令传输的开销和eNB / gNB处的计算复杂度。在3GPP规范定义的模拟场景设置下，通过广泛的模拟，将ACSR的性能与其他几种典型的资源分配方案进行了比较。性能指标是（1）参考eNB / gNB上的集中式蛮力优化方案的平均计算分流比（COR）和（2）3GPP规范中定义的平均成功分组接收比（PRR）。ACSR的平均COR为30.9％。当传输距离分别为120米，180米和320米时，ACSR在典型的固定区域资源分配方案（即FZRA方案）上的平均PRR改进分别大于5％，10％和21.8％。仿真结果表明，与3GPP的固定区域资源分配方案相比，ACSR方案通常可以显着提高性能。当传输距离分别为120米，180米和320米时，FZRA方案分别大于5％，10％和21.8％。仿真结果表明，与3GPP的固定区域资源分配方案相比，ACSR方案通常可以显着提高性能。当传输距离分别为120米，180米和320米时，FZRA方案分别大于5％，10％和21.8％。仿真结果表明，与3GPP的固定区域资源分配方案相比，ACSR方案通常可以显着提高性能。