Batch Grooming in Elastic Optical Networks with Space-Division Multiplexing

This paper introduces a batch grooming algorithm for establishing connections with different deadlines to be torn down for Elastic Optical Networks with Space-Division Multiplexing (EON-SDM). The proposed algorithm creates batches of requests for lightpath establishment and postpones their establishment to groom the highest possible number of lightpaths. Each batch comprises a set of requests that can be allocated as a single request without guard bands separating their lightpaths and using only one transponder per batch, which leads to higher spectrum efficiency and lower energy consumption. Results show that the algorithm produces lower blocking and higher energy efficiency than the existing algorithms.