1、 EIA TIA/IS-b58 96 - 3234600 0576086 510 H TIA/EIA INTERIM STANDARD I Data Services Interworking Function Interface for Wideband Spread Spectrum Systems I TIA/EIA/IS-658 JULY 1996 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunicnionr indwtr) in aocia11on mth the Ekctronic Indust
2、ria Association INDUSTRY ASSOCATION EIA TIA/IS-b58 76 3234600 0.576087 457 NOTICE TIA/EIA Engineering Standards and Publications are designed to serve the public interest through elknhthg misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of produ
3、cts, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of TWEIA from manufacturing or selling products not conforming to such Sta
4、ndards and Publications, nor shail the existence of such Standards and Publications preclude their voluntary use by those other than TIA/EIA members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by TIA/EIA in accordance with the Am
5、erican National Standards Institute (ANSI) patent policy. By such action, TIAEIA does not assume any liabiily to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. TIA/EIA INTERIM STANDARDS TIA/EIA Interim Standards contain information deeme
6、d to be of technical value to the industry, and are published at the request of the originating Committee without necessarily following the rigorous public review and resolution of comments which is a procedural part of the development of a TIA/EIA Standard. TIA/EIA Interim Standarcis should be revi
7、ewed on an muai basis by the formulating Committee and a decision made on whether to proceed to develop a TIA/EIA Standard on this subject. TIAEIA Interim Standards must be cancelled by the Committee and removed from the TWEIA Standards Catalog before the end of their third year of existence. Public
8、ation of this TIAIEIA Interim Standard for trial use and comment has been approved by the Telecommunications Industry Association. Distribution of this TIA/EIA Interim Standard for comment shall not continue beyond 36 months from the date of publication. It is expected that following this 36 month p
9、eriod, this TIA/EIA Interim Standard, revised as necessary, will be submitted to the American National Standards Institute for approval as an American National Standard. Suggestions for revision should be directed to: Eric Schimmel, Standards or that (in the negative form) a certain possibiiity or c
10、ourse of action is discouraged but not prohibited. May“ and “need not“ indicate a course of action permissible within the bits of the standard. “Can“ and “cannot“ are used for statements of possibiiity and capability, whether material, physical, or causal. Footnotes appear at various points in this
11、specification to elaborate and further ciarify items discussed in the body of the specification. Unless indicated otherwise, this document presents numbers in decimal form. Binary numbers are distinguished in the text by the use of single quotation marks. In some tables, binary values may appear wit
12、hout single quotation marks if table notation clearly specifies that values are binary. The character x is used to represent a binary bit of unspecified value. For example xxx0010 represents any 8-bit binary value such that the least signifcant five bits equal 00010. Hexadecimal numbers (base 16) ar
13、e distinguished in the text by use of the form Oxh. h where h.h represents a string of hexadecimal digits. For example, Ox2fa1 represents a number whose binary value is O0101 11 110100001 and whose decimal value is 12193. Note that the exact number of bits in the binary representation of a hexadecim
14、al number strictiy depends on the implementation requirements for the variable being represented. 2. 3. - - EIA TIA/IS-b5 76 W 3234600 0576070 T4L W 1 2 3 4 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 n 28 29 30 31 TIA/EIA/IS-658 ANSI/iEEE 802.2-1985 ANSI/IEEE 802.3-1990 ANSI J-STD-008 AN
15、SI T1.602-1989 ANSI T1.607-1990 ANSI T1.617-1991 ANSI T1.61-1991 RFC 1661 RFC 1662 TIA/EIA/IS-95-A TIA/EIA/IS-99 TIA/EIA/IS-657 TSB58 TSB74 Page iii REFERENCES Logical unk Control. Carrier Sense Muliple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specijkations. Persona
16、l Station-Base Station Comgatibility Requirements for 1.8 to 2.0 GHz code Division Multiple Access (CDMA) Personal Communications Systems. Integrated Services Digital Network (ISDM - Data-Link Layer Signalling Spedfiation for Application at the User-Network Interface. Integrated Services Digital Net
17、work (rSDN) - Layer 3 Spea$m.tion for Circuit-Switched Bearer Service for Digitai Subscriber Signding System Number 1 (DSSl). Integrated Services Digital Network (ISDM - Sigrmimg Spain for Rame Relay Bearer Service for Digital Subscriber Sisnalurg System Number 1 (DSSl). Integrated Services Digital
18、Network (ISDM - Core Aspects of Rame Protocol for Use with Rame Relay Bearer Service. Ihe Point-to-point pratocol (PPP). PPP in mLc I;t.aming. Mobile Station-Base Station Compatiby Standard for Dual- Mode Wideband Spread Spectrum CeUW System May 1995. Data Services Option Standard for Wideband Sprea
19、d Spectrum Digital Cellular System, July 1995. Packet Data Services Option for Wideband Spread Specbum Cellular System Administration of Parameter Value Assignments for TIA/EIA Wideband Spread Spectrum Standards. Telecommunrc ations Systems Bdietix Support for 14.4 kbps Data Rate and PCS Interaction
20、 for Wideband Spread Specum Cellular Systems. 1 2 Page iv No text. EIA TIA/IS-658 96 323i.1600 0576093 988 TIA/EIA/IS-658 EIA TIA/IS-b58 96 3234b00 0576092 814 TIA/EIA/IS-658 Page v CONTENTS i 1 INIRODUCTION 1-1 1.1 General Description . 1-1 2 3 1.2 Terms 1-1 1.3 Overview of L interface . 1-2 1.4 Ne
21、twork Reference Points . 1-3 4 5 6 2 MOBILE DATA PATH . 2-1 7 2.1 Protocol Overview . 2-1 B 2.2 BS/MSC Relay Function 2-2 s IO 11 2.3 Adaptation Layer 2-2 2.4 Frame Relay Switched Virtual Circuit . 2-2 2.5 Physical Layer 2-3 12 3 PSTN PATH 3-1 13 3.1 Overview 3-1 14 3.2 Physical Layer 3-1 15 4 SIGNA
22、LING PATH 4-1 16 4.1 Overview 4-1 17 4.2 Signaling for the Mobile Data Path . 4-1 18 4.2.1 BS/MSC Initiated FR SVC Establlshment . 4-2 19 4.2.2 BS/MSC Initiated Dormant Link Layer Connection Closure 4-2 20 . 4.2.3 IWF Initiated FR SVC Establlshment 4-3 21 4.2.4 IWF Initiated Dormant Link Layer Conne
23、ction Closure . 4-3 22 4.2.5 FR SVC Clearing 4-3 23 4.2.6 Optional interface Status Exchange 4-4 24 4.2.7 Initiakation . 4-4 25 4.2.8 Optional Packet Data Service Mobility Function . 4-4 26 4.2.9 Use of the User-User Information Element 4-4 27 4.2.10 Physical Layer for Mobile Data Path Signaling 4-8
24、 28 4.3 Signaling for the PSTN Path . 4-8 29 4.3.1 PSTN Connection Establishment for Mobile Originated Calls 4-9 r) 4.3.2 PSTN Connection Establishment for Mobile-Terminated Calls . 4-9 . 31 4.3.3 Connection Clearing . 4-9 32 4.3.4 Initialization . 4-9 33 4.3.5 Physical Layer for PSI“ Path Signaling
25、 4-9 Page vi 1 1.3-1 2 1.3-2 3 2.1-1 4 2.4-1 5 2.5-1 6 4.2.9-1 7 4.2.9-2 4.2.9-3 Q 4.2.9-4 IO 4.2.9-5 11 4.2.9-6 12 4.2.9-7 EIA TIA/IS-658 76 3234600 0576073 750 TIA/EIA/IS-658 FIGURES L Interface Reference Diagram for Packet-Mode Data 1-2 L Interface Reference Diagram for Circuit-Mode Data 1-2 Prot
26、ocol Architecture 2-1 UI-kame Format 2.3 ANSI/IEEE 802.3 MAC Frame Format 2-4 SETup_INFO Segment Format 4-5 C“NEL-INF0 Segment Format . 4-6 REASON Segment Format . 4-6 ACCOUNTING Segment Format 4-6 INTEFWACE-STATUS Segment Format 4-7 ESCAPE Segment Format . 4-7 MOBILITY-INFO Segment Format . 4.8 - E
27、IA TIA/IS-b5B 7b 3234b00 0576074 697 TIA/EIA/IS-658 Page 1-1 i 1INTRODUCTION 2 1.1 General Description 3 4 5 6 7 8 s lo This standard defines procedures on the L Interface for support of circuit-mode and packet- mode data transmission on TIA/EiA/IS-95 and ANSI J-STD-O08 based wideband spread spectru
28、m systems. This standard references many of the procedures defined in TiA/EIA/IS-99 in support of async and fax circuit-mode data services and in TIA/EiA/IS- 657 in support of packet-mode data semices. This standard specifies generic procedures unique to the L interface and does not describe all the
29、 internai element procedures needed to completely specify a data service. Service- specific documents wili include those additional procedures. 12 13 or more network connections. Bearer Channel. A physical layer channel that provides bidirectional data transfer for one 14 15 16 17 ia entity. i9 DLCI
30、. Data Link Connection Identifier. 20 21 FR. Frame Relay. ZL FR SVC. Frame Relay Switched Virtual Circuit. 23 24 25 26 n LAN. LocalAreaNetwork. BS. Base Station. A station used for communicating with mobile stations. Depending upon the context, the term base station may refer to a cell, a sector wit
31、hin a cell, or other part of the cellular system. BS/MSC. The base station and mobile switching center considered as a singie functionai DS1. A 1.544 Mbps synchronous channel on a T1 facility. IWF. interworking Function. An IWF provides the functions needed for terminai equipment connected to a mobi
32、le termination to interface with other networks, such as the PSTN or the CDPD network. A physical implementation could include a pool of modems. SSDN. Integrated Services Digital Network. 28 LAPD. Link Access Procedure on the D-Channel. MAC. Medium Access Control. MS. Mobile Station. A station used
33、for communicating with base stations, intended to be used while in motion or during halts at unspecified points. Mobile stations include portable units (e.g., hand-held personal units) and units installed in vehicles. 31 32 33 MSC. Mobile Switching Center. 34 PPDN. Public Packet Data Network. 35 PPP
34、. Point-to-Point Protocol. EIA TIA/IS-658 96 W 3234600 0576095 523 1 2 3 1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 P 23 24 25 28 27 28 Page 1-2 TIA/EIA/IS-658 PRL ISDN Primary Rate Interface. PSTN. Public Switched Telephone Network. RFC. Request for Comments. The generic name of a document dev
35、eloped by the internet Engineering Task Force 0. A document in this series may be on essentially any topic related to computer communication. RLP. Radio Link mtoCo1. SAPI. Service Access Point Identffer. UI. Unnumbered information. A frame type defined in ANSI T1.602. 1.3 Overdew of L Interface This
36、 standard specifies generic procedures at the L reference point for circuit-mode and packet-mode data services. Figures 1.3-1 and 1.3-2 show three separate paths associated with the L interface: the Mobile Data Path, the Signahg Path, and the PSTN Path. The Mobile Data Path applies to both circuit-m
37、ode and packet-mode data services. and provides a mechanism to transport end-user data between the MS and the WF. The Signaling Path also applies to both circuit-mode and packet-mode services, and provides control procedures for both the Mobile Data Path and the PSTN Path, as needed. The PSTN Path o
38、nly applies to circuit-mode data services, and provides a mechanism for the IWF to access the PSTN via the BS/MSC to originate and terminate PSTN voice-band modem calls on behalf of mobile users. This standard does not describe the PPDN interface to the WF for packet-mode data services. Sections 2,
39、3, and 4 describe, respectively, the Mobile Data Path, the PSTN Path, and the Signahg Path. U U Figure 1.3-1. L Interface Reference Diagram for Packet-Mode Data Figure 1.3-2. L Interface Reference Diagram for Circuit-Mode Data - EIA TIA/IS-658 96 323YbOO 0576096 46T TIA/EIA/IS-658 Page 1-3 1 2 3 1.4
40、 Network Reference Points Some of the reference points pertaining to data services are: Reference Point Ai. A physical interface connecting a BS/MSC to the PSTN. Reference Point L. A physical Interface connecting a BS/MSC to an IWF. Reference Point Pi. A physical interface connecting an WF to a PPDN
41、. Reference Point Um. A physical interface connecting an MS to a BS/MSC. Page 1-4 1 2 Not or To request that the WF open a Link Layer connection between an MS and the IWF for mobile originated or mobile terminated circuit-mode service. The BS/MSC initiates FR SVC clearing in the following cases (see
42、 4.2.5): To inform the IWF of the deactivation of a Link Layer connection between an MS and the IWF for packet-mode service: To request that the WF close a Link Layer connection between an MS and the IWF To request that the IWF close a Link Layer connection between an MS and the WF for mobile origin
43、ated or mobile terminated circuit-mode service. The BS/MSC can also request that the IWF close a dormant Link Layer connection between an MS and the IWF for packet-mode service (see 4.2.2). The WF initiates FR SVC establishment in the following case (see 4.2.3): EIA TIA/IS-b58 96 3234600 0576305 2T2
44、 1 2 3 4 5 6 7 8 Q 10 11 12 13 14 15 16 17 18 19 20 21 22 23 38 Page 4-2 TIA/EIA/IS-658 To request that the BS/MSC reactivate a Link Layer connection between an MS and the IWF for packet-mode service. The IWF initiates FR SVC clearing in the following cases (see 4.2.5): To inform the BS/MSC of the c
45、losure of a Link Layer connection between an MS and the WF for packet-mode service: or To inform the BS/MSC of the closure of a Link Layer connection between an MS and the IWF for mobile originated or mobile terminated circuit-mode service. The IWF can inform the BS/MSC of the closure of a dormant L
46、ink Layer connection between an MS and the WF for packet-mode service (see 4.2.41. Either the BS/MSC or the IWF can initiate an exchange of interface status information (see 4.2.7). The BS/MSC can inform the IWF of a change in packet data service mobility information (see 4.2.8). 4.2.1 BS/MSC Initia
47、ted FR SVC Establishment For the BS/MSC to initiate FR SVC estabiishment, it shall send a SETUP message in accordance with ANSI T1.6 17. The SETUP message shall include the user-user information element with the SETUP-INFO and CHANNELJNFO segments. as defned in 4.2.9. The SETUP message from the BS/M
48、SC may include the MOBILITY-INFO segment and may include one or more INTERFACE-STATUS segments, as defed in 4.2.9. If the BS/MSC is initiating FR SVC estabiishment to support a circuit-mode data service. the SETUP message shail also include the calling party number information element containing the
49、 Directory Number (DN) of the MS. The mandatory information elements should contain FR SVC- specific information. Under normal conditions, the IWF should respond to the SETUP message with the CONNECT message. If the IWF supports the optlonai interface status exchange function (see 4.2.6) and the SETUP message included a user-user information element with one or more INT%RFACE-SATUS segments, the CONNECT message shall include a user-user information element with the same number of INTERFACE-STATS segments. If the IWF
