ts in Core Networks are Packet Data Serving Node (PDSN) which is required to support packet data services and AAA (Authentication Authorization Accounting) server that handles subscribers' requests for access to the mobile network. EV-DOEV-DO also uses home agent and foreign agent core network components to support Mobile IP. The Home Agent (HA) is a server (stand-alone router) in the subscriber's home network. The HA is responsible for keeping track of where the subscriber is located at all times. The Foreign Agent (FA) is responsible for providing temporary address (care-of address) INTERNET EVDO BTS Agent Figure 5.10 EV-DOEV-DO architecture 3GPP2 CDMA2000 1xEV-DO Table 5.2 Comparison of EV-DO revisions Attribute 1xEV-DO Rev. 0 1xEV-DO Rev. A EV-DO Rev. B (expected) Duplex Scheme Multiple Access Multicarrier Operation Channel Bandwidth 1.25 MHz 1.25 MHz, shared by Multiple 1.25 MHz voice and data carriers, shared by voice and data Peak Data Rates 2.4 Mbps (downlink) 3.1 Mbps (downlink) 4.9 Mbps (downlink) 153.6 kbps (uplink) 1.8 Mbps (uplink) 1.8 Mbps (uplink) Average Data Rates 300-500 kbps (downlink) 400-900 kbps (downlink) 800-1000 kbps (downlink) 60-90 kbps (uplink) 300-500 kbps (uplink) 400-700 kbps (uplink) Downlink Sector Throughput 700 kbps 1000 kbps 1200 kbps Uplink Sector Throughput 200 kbps 600 kbps 700 kbps Average Data Call Setup Time < 3 seconds 1 second < 1 second Average One way Latency 150 ms 50 ms 40 ms Fast Call Setup (<1 second) Simultaneous Voice and Data Yes with VoIP Yes with VoIP Spectral Efficiency 0.56 b/s/Hz (downlink) 0.8 b/s/Hz (downlink) 0.96 b/s/Hz (downlink) 0.16 b/s/Hz (uplink) 0.5 b/s/Hz (uplink) 0.56 b/s/Hz (uplink) Voice Supports VoIP Supports VoIP Quality of Services Broadcast Multicast Support for cdma2000 1X Yes with hybrid terminals Yes with hybrid terminals to the visiting subscriber and for routing his/her packets to the new location. The FA is a router in the visited network and its functionality is provided by PDSNs in the 3GPP2 architecture. The details of EV-DO arch