Radio Link Protocols for Cellular Data
compatibility with existing land-line standards and systems,
cellular physical layer standards optimized for voice,
market demands for quick solutions.
In this paper we focus on radio link layer design and discuss how these constraints helped determine the protocols that have been standardized. We summarize the design, architecture and requirements for cellular circuit-mode and packet-mode data. We describe several design tradeoffs including a comparison of one level versus two level recovery mechanisms and provide performance comparisons. We also discuss the performance impact of several design choices.
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