WIN with OSI, the sequel: A Case Study of TETRA Digital Private Mobile Radio.
The increasing deployment of computer-networking services in fixed networks motivates the provision of similar services in wireless networks. In the case of PMR systems there are already several types of data communications service (MOBITEX, MPT1327, Motorola RD-LAP for example).
The first digital generation of PMR systems aspires to provide “open”, internationally standardised protocols to support data-communications. The implementation of these protocols in the wireless environment must interconnect with comparable protocols in fixed networks and give comparable performance, while optimising data transfer within the constraints of wireless media.
The objective of this paper is to examine how this could be attained in practice using the TETRA “Packet Data Optimised” (PDO) standard being developed by ETSI RES 6 specifically for this purpose.
A detailed performance analysis has been conducted of the proposed protocols and the physical channel under a range of variation of key operational parameters. The results are used as the basis for assessing the prospects of TETRA PDO for achieving its design targets in terms of performance and also in terms of compatibility of the TETRA network services with their equivalents in external networks.
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