In the competitive broadband access environment, providing access to"triple play"services(voice, video, and high-speed data) is an important way for both telephone and CATV network providers to increase thei...In the competitive broadband access environment, providing access to"triple play"services(voice, video, and high-speed data) is an important way for both telephone and CATV network providers to increase their revenue.Passive Optical Networks(PONs) are a cost-effective, flexible, and future-proof medium for providing triple play services.The 1 Gbit/s IEEE 802.3ah Ethernet PON(EPON) and ITU-T G.984 2.5 Gbit/ s PON(GPON) are currently being deployed for triple play service access.However, high definition switched digital video service such as IPTV will require more bandwidth.This paper provides a tutorial overview of the IEEE 802.3av 10Gbit/s Ethernet PON(10G EPON) standard, including the ways in which it differs from EPON.展开更多
A new medium access control method is proposed over the predominant Ethernet broadcast channel. Taking advantages of intrinsic variable length characteristic of standard Ethernet frame, message-oriented dynamic priori...A new medium access control method is proposed over the predominant Ethernet broadcast channel. Taking advantages of intrinsic variable length characteristic of standard Ethernet frame, message-oriented dynamic priority mechanism is established. Prioritized medium access control operates under a so-called block mode in event of collisions. High priority messages have a chance to preempt block status incurred by low priority ones. By this means, the new MAC provides a conditional deterministic real time performance beyond a statistical one. Experiments demonstrate effectiveness and attractiveness of the proposed scheme. Moreover, this new MAC is completely compatible with IEEE802.3.展开更多
文摘In the competitive broadband access environment, providing access to"triple play"services(voice, video, and high-speed data) is an important way for both telephone and CATV network providers to increase their revenue.Passive Optical Networks(PONs) are a cost-effective, flexible, and future-proof medium for providing triple play services.The 1 Gbit/s IEEE 802.3ah Ethernet PON(EPON) and ITU-T G.984 2.5 Gbit/ s PON(GPON) are currently being deployed for triple play service access.However, high definition switched digital video service such as IPTV will require more bandwidth.This paper provides a tutorial overview of the IEEE 802.3av 10Gbit/s Ethernet PON(10G EPON) standard, including the ways in which it differs from EPON.
基金This workis partly supported by national 863 project under grant 2002 AA412010 08
文摘A new medium access control method is proposed over the predominant Ethernet broadcast channel. Taking advantages of intrinsic variable length characteristic of standard Ethernet frame, message-oriented dynamic priority mechanism is established. Prioritized medium access control operates under a so-called block mode in event of collisions. High priority messages have a chance to preempt block status incurred by low priority ones. By this means, the new MAC provides a conditional deterministic real time performance beyond a statistical one. Experiments demonstrate effectiveness and attractiveness of the proposed scheme. Moreover, this new MAC is completely compatible with IEEE802.3.
