IEEE802.14数据传输的MAC

MAC of IEEE802.14 Data Communication

混合光纤 /同轴电缆 (HFC)网络由于原CATV接入的广普性和可用传输带宽高达 1GHz,使其成为仅次于光纤到户的数据接入方式。由于HFC网络的一些固有特性 ,决定了数据通信中的特殊要求。IEEE80 2 .14是用于协调HFC网络的前端和用户站点间数据通信的协议 ,具体包括物理层上实现通信的方式和媒体接入控制层 (MAC)上通信规程的协调。深入研究 80 2 .14数据传输的MAC ,对于开发出性能价格比优秀的前端控制器和用户电缆调制解调器都有着巨大的现实意义 。

Hybrid fiber/coaxial (HFC) networks is the best access method except fiber to the home(FTTH), for its popularity and good characteristic(bandwidth≈1 GHz). The special requirement is determined by the intrinsic properity of HFC. IEEE802.14 is the communication protocol between the Head end and stations, including the communication method applied to the PHY sublayer and data communication protocol to the MAC sublayer. Therefore, it is very important to investigate the MAC protocol to develop Head end Controller and Cable Modem, and it is one of the key techniques to realize the HFC full service networks.