Radio Link Control

Radio link control (RLC) is a layer 2 protocol used in the UMTS 3G cellular systems for error recovery and flow control. It is close to the selective repeat automatic repeat request (SR-ARQ).

Different setups of the RLC parameters such as transmit window size, receiving window size, periodic poll timer, poll timer, and poll prohibit timer can have significant impact to the overall RLC performance. The configuration and optimization of RLC parameters are critical to ensure that precious radio resources are fully utilized. We explore the error rate, the RLC round trip time (RTT), and the TCP flow control impact to the RLC transmit window size selections. Simulation results are presented to demonstrate how the transmit window size impacts the RLC throughput and delay performance.

This article is issued from Wikipedia - version of the Saturday, January 30, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.