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oai:recercat.cat:2072/5315952025-01-03T10:40:25Zcom_2072_355069com_2072_4427col_2072_355136

Understanding the impact of the PC5 Resource Grid design on the capacity and efficiency of LTE-V2X in vehicular networks Camps, Daniel Casademont, Jordi Lopez, Leandro Mendoza, Charmae Mobile Wireless Internet 621.3 Vehicular communications will foster mobility services and enable mass adoption of future autonomous vehicles, interchanging huge amount of data acquired from vehicles' sensors. 3GPP Release 14 presents the first standard for supporting V2X in LTE. Several enhancements are introduced, including a new arrangement of the physical resource grid, where subchannels are the minimum resource unit instead of Resource Blocks. The resource grid is defined by several design parameters, some of them with constraints imposed by 3GPP specifications, that affect the maximum message transmission rate and efficiency of the system. Moreover, the optimum choice of these parameters is closely linked to message length, which is another variable parameter. This paper provides an analysis of the relationship between these design parameters (Resource Block per Subchannel, Transport Block Size Index and Coding rate), message size and system's maximum capacity and efficiency. In doing so, we do not consider channel reuse or radio transmission characteristics because the focus of this paper is trying to find the resource grid design parameters that optimize system capacity, which is a very important aspect to consider by V2X operators. 2020-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/2072/531595 10.1155/2020/8156908 eng Hindawi. Wireless Communications and Mobile Computing Volume 2020;8156908 Copyright © 2020 Leandro Miguel Lopez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly. info:eu-repo/semantics/openAccess 13 p. application/pdf RECERCAT (Dipòsit de la Recerca de Catalunya)