Service area expansion using IP-VPN and wireless LAN for wireless over IP networks and experimental evaluation of its signal quality

摘要

WoIP (Wireless over IP) network is constructed with integration of IP backbone network and wireless access system, where wireless access points are directly equipped with IP network and distributed ubiquitously. WoIP enables us to realize the open operation of various types of wireless service by using private radio frequency like ISM band. This paper experimentally demonstrates the service area expansion of WoIP network. According with users demand, IP-VPN techniques can expand IP address for the WoIP network, and wireless LAN techniques can geographically expand WoIP service area to anywhere which has no IP access point. This paper also shows some experimental results of MOS for voice quality and RTT in expanding WoIP by use of best effort type LAN expansion without any QoS guarantee.