Bonded Satellite Channels
Publication Date: 2010-Aug-05
The IP.com Prior Art Database
B O N D E D S A T E L L I T E C H A N N E L S
Author: Chuck Wester
Satellite delivery of multiple one way data streams on a satellite transponder is not efficient. Current technology requires statistical multiplexing of multiple data services at the transmit site for the most efficient transfer of data possible. Satellite transponder data rates of 40 to 65 Mbps are not sufficient for efficient transport of multiple, large bit rate data channels packaged in one format to suit all customers. For example, multi-program transport stream (MPTS) video service delivery over relatively small satellite data pipes inherently assumes that all the services in the stream are desired at the receiver end. Consequently, service providers may groom out unwanted channels from these multiplexes and groom in others. The result is often deteriorated quality of experience (QOE) of all channels in the multiplex.
Channel bonding is a method of grouping two or more QAM channels together in an adjacent frequency range in a manner wherein they share the same upconversion. This type of grouping allows for the use of devices which can simultaneously transport digital video and internet protocol (IP) traffic, thereby enabling service providers to bundle multimedia services using common access devices.1 Channel bonding is a cost-saving and efficient way to increase downstream bandwidth in hybrid fiber/coax (HFC) networks. For example, Figure 1 depicts how channel bonding is done in a DOCSIS 3.0 system.2
The Data over Cable Service Interface Specification (DOCSIS) provides a platform wherein the cable modem termination system (CMTS) bonds quadrature amplitude modulation (QAM) channels.
FIGURE 1: DOCSIS 3.0 CHANNEL BONDING
P a g e | 1 1701 John F. Kennedy Blvd., Philadelphia, PA 19103
The proposed solution addresses the problem of deteriorated QOE by bonding satellite channels together in a similar fashion as a CMTS bondsQAMs for data deliv...