Data link control protocols for wireless ATM access channels
作者： H. Xie , P. Narasimhan , R. Yuan , D. Raychaudhuri
DOI: 10.1109/ICUPC.1995.497110
关键词: Asynchronous Transfer Mode 、 Wireless network 、 Network layer 、 Data Link Control 、 Computer network 、 Virtual circuit 、 Time division multiple access 、 Computer science 、 ATM adaptation layer 、 Retransmission
摘要: Describes data link control procedures for wireless ATM access channels based on a dynamic TDMA/TDD frame-work. The system provides integrated services including available bit-rate (ABR) and constant/variable (CBR/VBR) voice or video through the addition of wireless-specific medium (MAC) (DLC) protocol layers between physical network layers. purpose DLC layer is to insulate from channel impairments by selective retransmission erroneous lost cells before they are released layer. methods described exploit on-demand ABR burst transmission capability TDMA retransmit unacknowledged in slots not allocated service data. Specific error recovery outlined both (asynchronous) (isochronous) CBR services. For ABR, operation follows group ACK/NACK reject (SREJ) procedure burst-burst basis, without time limits completion. CBR, constrained complete within specified interval, so that isochronous delivery can be maintained. proposed protocols have been validated using software emulator which incorporates choice radio models, MAC, DLC. Numerical results show under consideration significantly improve quality over impaired packer stream type virtual circuits.
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