1、 ANSI/TIA-136-334-2000 APPROVED: MARCH 31, 2000 REAFFIRMED: OCTOBER 20, 2004 REAFFIRMED: AUGUST 14, 2013 WITHDRAWN: JUNE 12, 2015 TIA-136-334 March 2000TDMA Third Generation Wireless- Packet Data Service- Subnetwork Dependent Convergence Protocol NOTICE TIA Engineering Standards and Publications are
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20、A/EIA-136-334 specifies the Subnetwork Dependent ConvergenceProtocol (SNDCP) for packet-data service (GPRS-136). The SNDCPfunctions include multiplexing of several packet-data protocols, com-pression and decompression of user data, compression and decompres-sion of protocol control information, segm
21、entation of a networkprotocol data unit (N-PDU) into logical link control protocol data units(LL-PDUs), and reassembly of LL-PDUs into an N-PDU.TIA/EIA-136-334 was developed by TR-45.3.2, the Data ServicesWorking Group of TR-45.3, the TIA TDMA Wireless Standards Sub-committee.This document reference
22、s publications developed by ETSI (EuropeanTelecommunications Standards Institute). These referenced publicationsare freely available at http:/www.etsi.org .TIA welcomes suggestions for improvement of this standard. Pleasesend suggestions to the following address:Telecommunications Industry Associati
23、on2500 Wilson Boulevard, Suite 300Arlington, VA 22201-3836TIA/EIA-136-334iiRevision HistoryRevisionTIA/EIADescription136-334 First revisionTIA/EIA-136-3341Subnetwork Dependent Convergence ProtocolThis standard specifies Subnetwork Dependent Convergence Protocol(SNDCP) for the packet-data network. Th
24、e user of the services provided by SNDCP is a packet-data protocol(PDP) at the Mobile Station (MS) or the relay at the Serving GPRSSupport Node (SGSN). SNDCP uses the services provided by theLogical Link Control (LLC) layer.The main functions of SNDCP are: Multiplexing of several PDPs. Compression a
25、nd decompression of user data. Compression and decompresseion of protocol control information Segmentation of a network protocol data unit (N-PDU) into Logical Link Control Protocol Data Units (LL-PDUs). Reassembly of LL-PDUs into an N-PDU.The packet-data network SNDCP shall be as specified by GSM 0
26、4.65 -Digital Cellular Telecommunications System(Phase 2+), GeneralPacket Radio Service (GPRS); Mobile Station (MS) - Serving GPRSSupport Node (SGSN); Subnetwork Dependent Convergence Protocol(SNDCP)THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA represents the global information and communications
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