Architecture for IP-Based Next Generation Radio Access Network

Background

Since IP-based RANs is an emerging technology, the literature on flexible and reconfigurable next generation RAN architectures based on versatile wireless routers is rather sparse. An interesting paper in this direction, Ghosh, Basu & Das (2005) provides an insight into a flexible, reliable, and cost effective IP-based RAN architecture with BSs connected to form a mesh. Bu, Chan & Ramjee (2006) discuss connectivity, performance and resiliency of IP-based CDMA RANs focusing on a star topology between the BSs and RNC (Radio Network Controller). Vassiliou et al (2002) propose a RAN for next generation wireless networks based on multi-protocol label switching (MPLS) and hierarchical mobile IP. Kempf & Yegani (2002) propose a new architecture called open-RAN for mobile wireless IP RANs. Yasukawa, Nishikido, & Hisashi (2001) propose an IPV6-based wireless routing architecture with scalable mobility and quality of service (QOS) support. Chen & Hamalainen (2003) present a method for handovers in IP RANs.

The proposed wireless router (WR) architecture, its mechanisms for efficacious traffic and bandwidth management, and dynamic self-configuration are based on our earlier patented research work (Dantu, 2005; Dantu et al., 2006; Patel et al., 2006).