Two-Stage Resource Allocation to Improve Utilization of Synchronous OFDM-PON Supporting Service Differentiation

作者：Doo Kyeong Hwan; Bang Junseong; Han Man Soo^*; Lee Jonghyun; Lee Sangsoo

来源：ETRI Journal, 2015, 37(4): 657-666.

DOI：10.4218/etrij.15.0114.0922

• OFDM-PON
• resource allocation
• service differentiation
• synchronous frame
• utilization

We propose a two-stage resource allocation algorithm for the high link utilization of an orthogonal frequency-division multiplexing passive optical network (OFDM-PON). An OFDM-PON is assumed to use a synchronous frame structure in supporting service differentiation. In distributing resources, the proposed algorithm first allocates a time window for each optical network unit (ONU), and then it arranges a subchannel, which is a group of subcarriers. This algorithm needs to satisfy two constraints. First, computations for the resource allocation should be done using a frame unit. Second, an ONU has to use a single subchannel to send upstream data for multiple services within a frame duration. We show through a computer simulation that the proposed algorithm improves the link utilization.

• 出版日期2015-8