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

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