[Abstract] | [Download Postscript File]
To provide residential users with multimedia interactive services, a high 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 Fiber Coax) architecture of CATV network and discuss the problems in providing two way communication over HFC. Second, we discuss the important issues in upstream channel protocol design: 1) overlapping the collision resolution and data 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 get the RTC(Round Trip Correction) parameter. Third, we introduce several proposed IEEE 802.14 protocols for upstream channel and compare these protocols.
¡@