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Study on Uplink Throughput of Radio Resource Sub-granting and Shortening TTI Schemes for Overlay D2D

机译：覆盖D2D的无线电资源授权和缩短TTI方案的上行链路吞吐量的研究

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Capacity, reliability and latency act as major requirements of new applications in future cellular networks. Device to device (D2D) communication is seen as a promising solution to achieve these requirements. However, the reliability and latency requirements can be achieved through resource reservation for D2D communication (overlay D2D) at the cost of high resources wastage. This is especially true for applications with small payload and massive number of devices expected for D2D communication. Two schemes have been proposed to minimize the impact on resource wastage while maintaining the required latency: Resource allocation in a finer granularity, i.e. shortening transmission time interval (sTTI) and fast delegation of already allocated, but unused resources, i.e. sub-granting. In this paper, we numerically evaluate the uplink cell throughput for both schemes. The results indicate a better uplink cell throughput for the sub-granting scheme compared to the sTTI schemes, which improves radio resource utilization for the small payload applications.
机译：容量，可靠性和延迟是未来蜂窝网络中新应用的主要要求。设备（D2D）通信的设备被视为实现这些要求的有希望的解决方案。然而，可以通过以高资源浪费的成本进行D2D通信（覆盖D2D）的资源预留来实现可靠性和延迟要求。对于具有小额有效载荷和预期的D2D通信的设备的应用尤其如此。已经提出了两种方案来最小化资源浪费的影响，同时保持所需的延迟：更精细的粒度中的资源分配，即缩短传输时间间隔（STTI）和已经分配的快速委派，但未使用的资源，即解压缩。在本文中，我们对两个方案进行了数值评估了上行链路单元吞吐量。结果表明与STTI方案相比，对子授权方案的更好的上行链接小区吞吐量，这提高了小有效载荷应用程序的无线电资源利用率。

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