Abstract
As the future generations cellular networks become more data-centric due to the pre-domination of TCP/IP oriented services in the Internet, sophisticated and reliable link layer protocols will be required to support end-to-end services over the wireless links and to extend transport layer protocols such as TCP to the mobile hosts. The use of radio link protocols at the link layer to provide an acceptable error performance is now a standard practice. The main function of the RLP is to conceal the channel related losses from TCP by quickly recovering the dropped packets by means of local retransmissions. With the delay requirements of the data services over 3G CDMA networks becoming more stringent, faster and hybrid radio link protocols are being developed. Also, retransmissions at the MAC layer offer added reliability to the radio link protocols and make them more robust to mitigate losses over the wireless link which in turn makes data service provisioning in 3G networks more efficient.
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