Logical Macro-Cells of Mobile Multimedia Metropolitan Area Network

摘要

This paper presents a Logical Macro-Cell configuration in a micro-cellular network in which the capacity is larger than a conventional macro-cellular network. And the network provides high-bit-rate communications to fast-terminals with smooth soft-handover. The application used in the network is Mobile Multimedia Metropolitan Area Network (MM-MAN) which offers high-bit-rate IP communications for high-mobility terminals in metropolitan areas. We present a combination of wireless and wired network technologies to implement MM-MAN. Secure Virtual Private Network (VPN) tunnel and seamless continuous services in micro-cellular network are basic requirements of MM-MAN. Passive Optical Network (PON) is adopted as the access network to support a great deal of Optical Network Units (ONU) which controls each micro-cell, To reduce packet loss of high-mobility terminal caused by frequent handovers in the micro-cells, we configure Logical Macro-Cell (LMC). The LMC also makes use of IP packet multicast to support micro-mobility of the VPN tunnels. Through replacing the traditional macro-cells with both micro-cells and LMCs which aims at fast-moving terminals, we increase the available spectral capacity which can be used to provide up to 80 times increase in bandwidth compared to macro-cells, even if 30 % of the users are fast movers.