Considerations on Network Performance of 64 kbit/s-Based Services in an ATM Network

概要

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This paper deals with network performance of 64 kbit/s-based services supported in an ATM network and an ATM interworking network with 64 kbit/s-based networks. It first clarifies network performance issues giving a model and objectives of study and experiment. A result of computational analysis is then presented, where a cell loss ratio of an order of 10^lt-4gtor 10lt-5gt is obtained to give a performance equivalent to that currently used as objective values in existing networks for a 64 kbit/s digital level. In order to capture the impact of cell loss and associated performance for application levels, an experimental test has been carried out using typical applications. Test results show that the cell loss ratio needs to be approximately ten times better than the bit error ratio for comparable performance for application levels. A cell loss ratio of better than l0^lt-5gt, or an order of l0^lt-6gt considering an interworking situation, seems to be necessary according to the test results. It is further clarified by the test that a single cell is more valuable than a multiplexed cell for providing better cell loss resilience characteristics. Although not all applications of 64 kbit/s networks have been tested, it is expected that the test results can be used as guidance for considering the support of 64 kbit/s services in an ATM and interworking networks.
社団法人電子情報通信学会の論文
1995-03-25