In literature sundry algorithms have been interpreted by numerous researchers such as interleaved-poling algorithm [
8], multi-threaded scheduling algorithm [
9], wavelength-scheduling-polling algorithm in the finish time with void filling (EFT-VF) [
10], single tread scheduling algorithm for grant sizing [
11], elementary grant sizing scheme [
12], online-interleaved-polling and offline multi-thread polling algorithms [
13] of long reach passive optical networks (LR-PONs), modified-latency sync (LS)-bandwidth allotment scheme for multi-OLTs [
14]. The multi-threaded scheduling algorithm is appropriate for fusion of hybrid wavelength divison multiplexed−time divison multiplexed−passive optical network (WDM-TDM-PON) where multiple wavelengths are used to transfer multiple signals at the same instance. The system reduces the transmission delay by interleaved polling algorithm. Further, the EFT-VF reduces the packet transmission time with less complexity as compared to the wavelength scheduling technique. The analysis for single thread scheduling algorithm with grant sizing has been presented in Ref. [
11], where bandwidth demand is determined by OLT without discriminating the diverse service suppliers. Further, an analytical analysis published in Ref. [
13] shows a comparison for multi-thread offline algorithm and online interleaved polling scheme. The results reveal that multi-thread polling scheme is better than the online interleaved polling in terms of communication delay and throughput for LR-PON. Further, an analytical model for interleaved polling with adaptive cycle time (IPACT) is demonstrated in Ref. [
15] for fixed packet length with Poisson distribution which makes it a further sophisticated system.