Virtual Soft Hand-off in IP-Centric Wireless CDMA Networks
Faramak Vakil, D. Famolari, Shinichi Baba, Tadashi Maeda · 2001
We present a novel method, Virtual Soft Hand-off, for wireless IP-centric CDMA networks whose routers, hosts and mobile stations have small group multicast (SGM) capability. The underlying ideas of the virtual soft hand-off method are that it • views soft hand-off support as setting up an explicit synchronous multicast session among a small group of participants with dynamic group membership, and • recovers multiple packet flows from the multiple received signals concurrently, and combines them to create a single packet flow at higher layers. The virtual soft hand-off approach uses the Session