HFC网中的信道共享控制技术  

Controlling Techniques of Channel Sharing in HFC Network

作　　者：石进[1] 曾喜华[2] 

机构地区：[1]重庆大学计算机学院,重庆400044 [2]第三军医大学,重庆400038

出　　处：《重庆大学学报（自然科学版）》2002年第3期30-34,共5页Journal of Chongqing University

摘　　要：HFC网中的信道共享控制技术和以太网及令牌环相比有其独到之处 ,本文从MAP管理帧入手 ,重点分析上行带宽控制方法和冲突解决技术以及三者之间的关系。MAP帧是内容复杂的帧 ,帧中包括了CM初始接入所需的测距机会信息 ,竞争带宽分配的信息 ,带宽分配信息 ,冲突检测信息等。论文在说明MAP帧的格式、作用的基础上说明用户具体的接入方式。最后探讨带宽的分配方法、冲突的产生原因、解决冲突的算法和流程等。The techniques of sharing a channel in HFC are original with regard to those of Ethernet and Ring. In this paper, the analysis is stressed on the method of the upstream bandwidth allocation, the collision resolving, and the relationship among them, beginning with MAP management message. The MAP is a complex frame, in which the messages of ranging opportunity needed by the CM at the access beginning, bandwidth allocation contention, bandwidth allocation and collision detection are included. The access way for a user is explained after the frame format and functions of a MAP are illustrated. Finally, upstream bandwidth allocation, the cause of collision, algorithm and the process to solve the collision and so on are studied.

关 键 词：HFC网 信道共享 控制技术 宽带网络 冲突 光纤同轴电缆网 MAP帧 

分 类 号：TN915.62[电子电信—通信与信息系统] TN915.42[电子电信—信息与通信工程]