Performance Without RLP
1500 byte IP/PPP packet, IS-95 Rate Set 1:
- 1500 bytes/22 bytes/frame = 68+ frames
- For FER=.01, probability of packet success is (1-.01)68 = 0.505 (pretty bad)
- For FER=.02, probability of packet success is (1-.02)68 = 0.253 (even worse)
TCP can only recover by resending entire packet
- selective link-level retransmission clearly needed