关键词: OTN，突发业务，阻塞率，时延

Abstract: When short-term and unconventional frequency services(i.e. burst services) are issued in OTN, it will be difficult to ensure that the blockage rate and transmission latency of services will be guaranteed due to insufficient bandwidth resources. In response to the above issue, an burst services problem model in OTN was established. This model can increase bandwidth resources by reducing the maximum bandwidth occupation rate to reduce the blocking rate of burst services.According to this model, a joint optimization algorithm based on latency and maximum bandwidth occupancy was proposed, which reduces the average latency of services while reducing the blocking rate of burst services.The experimental results also indicate that compared with other reserved bandwidth based algorithms, the joint optimization algorithm has the lowest service blocking rate (the highest blocking rate is 62.10% lower than the reserved bandwidth based multiplexing algorithm), and the average service latency has always remained low (the highest service average latency is 0.36ms lower than the reserved bandwidth based multiplexing algorithm, and the maximum value does not exceed 5.66ms).

Key words: OTN, burst services, blockage rate, latency