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To provide residential users with multimedia interactive
services, ahigh bandwidth access network solution is required.
In this work, we focus on using existing CATV networks to
provide high bandwidth interactive services. We first introduce
the HFC(Hybrid FiberCoax) architecture of CATV network adnd
idscuss the problems in providingtwo way communication over HFC.
Second, we discuss the important issues in upstream channel
protcol design: 1) overlapping the collision resolution anddata
transmission to archive best usage of bandwidth, in which we
examine how to arrange the request mini-slots and data
transmission; 2) resolving collision, in which we discuss
several traditional collision algorithms; 3)resolving the
synchronization problem, in which we propose our solution to
getthe RTC(Round Trip Correction) parameter. Third, we introduce
several proposed IEEE 802.14 protocols for upstream channel and
compar these protocols.
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