Estimation of Storage using Jitter incorporated Channelization

Abstract

In video applications the storage requirement is considerably large among all the multimedia objects and thus they require large amount of network resources especially storage space and bandwidth. Here, we discuss a mathematical model to estimate the buffer space required to provide the video data to users without break and hiccups. For doing this, we divide the given physical channel (PC) into logical channels (LCs) using time-division multiplexing (TDM) approach. The data rate, also known as bandwidth, can be allocated to the LCs uniformly or non-uniformly. In [14], it is reported that allocating bandwidth non-uniformly to the LCs needs less buffer space. Therefore, the bandwidth is allocated non-uniformly to the logical channels, which in turn reduces system cost; thus, making the video services cheaper. The proposed work estimates the buffer storage by incorporating the jitter delay. The buffer storage is modeled as a random variable (rv) and its probability density function (PDF) is developed. The simulation results are obtained by dividing a physical channel into three, five, eight, and ten logical channels. This study may be used in several applications for example, cable TV, news-on-demand, video-on-demand.

Keywords:

• Central limit theorem
• jitter delay
• uniform distribution
• video channelization