TIA-895-A-2002 CDMA Tandem Free Operation《CDMA无二次编解码操作》.pdf

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1、 TIA STANDARD ANSI/TIA-895-A-2002 Approved: October 29, 2002 CDMA Tandem Free Operation TIA-895-A (Revision of TIA/EIA-895) OCTOBER 2002 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance Copyright Electronic In

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20、 LIMITATIONS. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CDMA Tandem Free Operation TIA-895-AiTable of Contents 1 Foreword . vi 2 1 Introduction. 1 3 2 Documentation Conventions . 1

21、 4 3 References. 1 5 3.1 TIA / EIA 1 6 3.2 3GPP2. 2 7 3.3 Other . 2 8 4 Terminology 3 9 4.1 Definitions. 3 10 4.2 Acronyms 3 11 5 General Approach . 4 12 5.1 Background. 4 13 5.2 Principle of Tandem Free Operation. 5 14 5.3 CDMA TFO Version Identification 6 15 6 TFO Frame Structure 7 16 6.1 TFO Fram

22、e Structure for 16 kbps Sub-Multiplexing 7 17 6.1.1 Requirements/Assumptions for TFO Frame Structure Definitions . 7 18 6.1.2 Coding of TFO Frames for 16 kbps Sub-Multiplexing . 7 19 6.1.2.1 Coding of System Identification Bits (S1 S8) 7 20 6.1.2.2 Coding of Speech Codec Type (C1 C4). 8 21 6.1.2.3 E

23、mbedded TFO Message Indicator Bit (C5) 8 22 6.1.2.4 Packet Type Information for CDMA Variable Rate Codecs (D1.D9) 8 23 6.1.2.5 Coding of Time Alignment Bits (T1.T4) 10 24 6.1.2.6 Coding of Data Bits for Q8, EVRC and SMV (D-Bits) 10 25 6.1.2.7 Coding of Data Bits for Q13 (D-Bits). 10 26 6.1.2.8 Rate

24、Reduction Parameters for CDMA Variable Rate Codecs . 11 27 6.1.2.9 Dim-And-Burst with CDMA Variable Rate Codecs . 11 28 6.1.2.10 Rate Reduction Mismatch with CDMA Variable Rate Codecs. 11 29 6.1.3 TFO Frames for 16 kbps Sub-Multiplexing 11 30 6.1.3.1 TFO Frame Structure for CDMA Q8 12 31 6.1.3.2 TFO

25、 Frame Structure for CDMA EVRC 15 32 6.1.3.3 TFO Frame Structure for CDMA SMV 18 33 6.1.3.4 TFO Frame Structure for CDMA Q13 21 34 7 TFO Message Structure 24 35 7.1 Definition of the TFO_REQ Messages . 25 36 7.1.1 Definition of the TFO_Req_Extension_Block 26 37 7.1.2 Cyclic Redundancy Check 26 38 7.

26、1.3 Definition of the Codec_List_Extension_Block . 26 39 7.2 Definition of the TFO_ACK Messages. 27 40 7.2.1 Definition of the TFO_Ack_Extension_Block 27 41 7.3 Definition of the TFO_TRANS Messages 28 42 7.4 Definition of the TFO_NORMAL Message 28 43 7.5 Definition of the TFO_FILL Message 28 44 7.6

27、Definition of the TFO_DUP Message (Not for CDMA-CDMA calls) . 28 45 7.7 Definition of the TFO_SYL Message (Not for CDMA-CDMA calls) 29 46 7.8 Definition of the TFO_DTMF and TFO_DTMF_ACK messages 29 47 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo rep

28、roduction or networking permitted without license from IHS-,-,-TIA-895-A CDMA Tandem Free Operationii7.8.1 Message structure of TFO_DTMF and TFO_DTMF_ACK . 30 1 8 Time Alignment of TFO Frames and TFO Messages . 32 2 8.1 Time Alignment of TFO Messages . 32 3 8.2 Time Alignment of TFO Frames. 32 4 8.3

29、 Time Alignment of TFO Frames to Downlink TRAU Frames 33 5 9 Processes for Tandem Free Operation 34 6 9.1 Rx_TRAU Process 35 7 9.2 Tx_TRAU Process 35 8 9.2.1 Downlink Speech Transmission if TFO is ON 35 9 9.2.2 Synchronization and Bit Errors in Received TFO Frames 36 10 9.3 Tx_TFO Process . 36 11 9.

30、4 Rx_TFO Process. 37 12 9.4.1 Search for and Monitoring of TFO Synchronization. 37 13 9.4.2 Errors in TFO Messages and TFO Frames 37 14 9.5 TFO_Protocol Process 39 15 9.5.1 Messages from Rx_TRAU or local MSC 39 16 9.5.2 Messages to Tx_TRAU. 39 17 9.5.3 Messages to and from Tx_TFO. 39 18 9.5.4 Messag

31、es from Rx_TFO . 39 19 9.5.5 Messages from a higher level system 40 20 10 State Machine of the TFO_Protocol Process for CDMA 41 21 10.1 Initialization 42 22 10.1.1 Not_Active State. 42 23 10.1.2 Wakeup State 42 24 10.2 Establishment 42 25 10.2.1 First_Try State 42 26 10.2.2 Continuous_Retry State 42

32、 27 10.2.3 Periodic_Retry State . 43 28 10.2.4 Monitor State 43 29 10.2.5 Mismatch State 43 30 10.3 Contact State . 43 31 10.4 Connect State 43 32 10.5 Operation State . 43 33 10.6 Tandem . 43 34 11 Detailed Description of TFO_Protocol for CDMA. 44 35 12 CDMA TFO Codec Negotiations 56 36 12.1 Codec

33、Mismatch Resolution . 56 37 12.2 Codec Optimization 56 38 12.3 Rules for Resolving Codec Mismatch that a certain course of action is preferred but not 13 necessarily required; or (in the negative form) that a certain possibility or course of action is discouraged but not 14 prohibited. May and need

34、not indicate a course of action permissible within the limits of the standard. Can and 15 cannot are used for statements of possibility and capability, whether material, physical, or causal. 16 3 References 17 The following documents contain provisions which, through reference in this text, constitu

35、te provisions of the 18 present document. 19 3.1 TIA / EIA 20 For ease of cross referencing, the Telecommunications Industry Association (TIA) / Electronics Industry Association 21 (EIA) references provided this section are aligned with the 3GPP2 references, provided in section 3.2. 22 1. TIA/EIA-96

36、C, Speech Service Option Standard for Wideband Spread Spectrum System, 1998. 23 2. TIA/EIA/IS-127-1, Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spec-24 trum Digital Systems, 1998. 25 3. TIA/EIA/IS-733-1, High Rate Speech Service Option 17 for Wideband Spread Spectrum C

37、ommunication 26 Systems, 1999. 27 4. TIA/EIA-829, Interoperability Specification for Tandem Free Operation, June 2000. 28 5. TIA/EIA/IS-893 Selectable Mode Vocoder Service Option for Wideband Spread Spectrum Communication 29 Systems, in ballot, 2002. 30 6. cdma2000 Standards for Spread Spectrum Syst

38、ems Release B: 31 TIA/EIA/IS-2000.1-B, Introduction to cdma2000 Standards for Spread Spectrum Systems, May 2002. 32 TIA/EIA/IS-2000.2-B, Physical Layer Standard for cdma2000 Spread Spectrum Systems, May 2002. 33 TIA/EIA/IS-2000.3-B, Medium Access Control (MAC) Standard for cdma2000 Spread Spectrum S

39、ystems, 34 May 2002. 35 TIA/EIA/IS-2000.4-B, Signaling Link Access Control (LAC) Standard for cdma2000 Spread Spectrum Sys-36 tems, May 2002. 37 TIA/EIA/IS-2000.5-B, Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems, 38 May 2002. 39 TIA/EIA/IS-2000.6-B, Analog Signaling S

40、tandard for cdma2000 Spread Spectrum Systems, May 2002. 40 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-895-A CDMA Tandem Free Operation 2 7. TIA/EIA-2001.4-B, Interoperability Sp

41、ecification (IOS) for cdma2000 Access Network Interfaces Part 4 1 (A1, A2, and A5 Interfaces), May 2002. 2 3 3.2 3GPP2 4 The 3GPP2 references are aligned with the TIA/EIA references of section 3.1 and are provided here for information 5 and cross reference purposes. 6 1. 3GPP2 C.S0009-0, Speech Serv

42、ice Option Standard for Wideband Spread Spectrum Systems, December 7 1999. 8 2. 3GPP2 C.S0014-0-1, Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spec-9 trum Systems - Addendum 1, December 1999. 10 3. 3GPP2 C.S0020-0-1, High Rate Speech Service Option 17 for Wideband Sprea

43、d Spectrum Communicat-11 ions Systems Addendum 1, December 1999. 12 4. 3GPP2 A.S0004-0.1, 3GPP2 Tandem Free Operation Specification Release A, August 2000. 13 5. 3GPP2 C.S0030-0 v2.0, Selectable Mode Vocoder Service Option for Wideband Spread Spectrum 14 Communication Systems, December 2001. 15 6. c

44、dma2000 Standards for Spread Spectrum Systems Release B: 16 3GPP2 C.S0001-B, Introduction to cdma2000 Standards for Spread Spectrum Systems, May 2002. 17 3GPP2 C.S0002-B, Physical Layer Standard for cdma2000 Spread Spectrum Systems, May 2002. 18 3GPP2 C.S0003-B, Medium Access Control (MAC) Standard

45、for cdma2000 Spread Spectrum Systems, 19 May 2002. 20 3GPP2 C.S0004-B, Signaling Link Access Control (LAC) Standard for cdma2000 Spread Spectrum Sys-21 tems, May 2002. 22 3GPP2 C.S0005-B, Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems, 23 May 2002. 24 3GPP2 C.S0006-B,

46、Analog Signaling Standard for cdma2000 Spread Spectrum Systems, May 2002. 25 7. 3GPP2 A.S0014-0, Interoperability Specification (IOS) for cdma2000 Access Network Interfaces Part 4 26 (A1, A2, and A5 Interfaces), May 2002. 27 3.3 Other 28 8. 3GPP TS 28.062: In-band Tandem Free Operation (TFO) of Spee

47、ch Codecs; Version 4.2.0 29 9. GSM 08.62: Digital cellular telecommunication system (Phase 2+); Inband Tandem Free Operation (TFO) 30 of Speech Codecs; Version 7.0.0. 31 32 33 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking p

48、ermitted without license from IHS-,-,-CDMA Tandem Free Operation TIA-895-A 3 4 Terminology 1 4.1 Definitions 2 For the purposes of the present document, the following definitions apply. 3 2G is a 2ndgeneration wireless systems. 4 3G is a 3rdgeneration wireless systems. 5 Decoder provides reconstruction of a speech signal from a compressed format according to an appropriate algor-6 ithm. 7 Encoder provides compression of a speech signal into a new format for bandwidth efficiency according to an 8 ap