Telecom Tutorials by Samir Amberkar: Standard Reference

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3GPP Modem
Simulator

Standard Reference

List of all specifications referred in tutorials (updated regularly).

ITU IETF/RFCs SS7 WiMAX ETSI

3GPP GSM(R99) GPRS(R99) GSM(R4+) UMTS(R5) UMTS/HSPA LTE(R8) 5G(R15) SCF O-RAN

ITU Recommendations (main page)
Location: http://www.itu.int/rec/T-REC-/en/
Example for X.690: http://www.itu.int/rec/T-REC-X.690/en/

X.690	ASN.1
X.227	OSI protocol
Q.21XX	SAAL (Signaling ATM Adaptation Layer), SSCF, SSCOP
Q.2150.1	Layer bridging gap between MTP/MTP3b transport and Q.2630.2
Q.2630.2	Signaling protocol for AAL2

RFCs
Location: http://datatracker.ietf.org/doc/rfc/
Example for 2719: http://datatracker.ietf.org/doc/rfc2719/

RFCs can also be searched at IETF web site.

2719	Adaptation architecture for IP signaling transport for SS7
3331	M3UA (MTP3 User Adaptation layer)
3309/4166	SCTP (Stream Control Transmission Protocol)
3095	RoHC profiles: RTP, UDP
3267	RTP payload format for AMR and AMR-WB

SS7
Location: http://www.itu.int/rec/T-REC-/en/
Example for Q.700: http://www.itu.int/rec/T-REC-Q.700/en/

Q.700	SS7 umbrella specification
Q.701 - 709	MTP
Q.711	Functions/Services of SCCP
Q.714	SCCP procedures
Q.713	SCCP messages
Q.771	Functions of TCAP
Q.772	Information elements of TCAP
Q.773	TCAP message formats
Q.774	TCAP procedures
Q.761	ISUP description
Q.762	ISUP message functions
Q.763	ISUP message formats
Q.764	ISUP signaling procedures
Q.730	ISUP supplementary services
Q.721 - 725	TUP

3GPP

Releases

Individual release feature documents are available here.
You may also refer 3GPP Features and Study Items page to check features under various releases.
For more detailed list of specifications under a release, go to 3GPP Portal and click on Releases tab.

Specification series

Specification numbering page gives top level view of various specification series.

Specification

3gpp specifications are marked either TR or TS.
TR are "Study" documentations whereas TS are "Specifications".
TR documents are very useful to understand "why?".
TS documents cover details related to architecture, procedures, interfaces, and so on.

To download specification, you may use 3GPP FTP site or below form (e.g. type 36.300 and click on 'locate').

Use below form to go to CR page of the specification (e.g. type 36.300 and click on 'CR Page').

Use search link at below page to get 3gpp specification in PDF format.

etsi.org >> standards

CR/Meeting documents

Use following form to search documents (e.g. CP-100354) in 3gpp site.

GSM (R99)
Location: http://www.3gpp.org/ftp/Specs/latest/R1999/ or 3gpp R99 status report
For all 3GPP specs, check out 3gpp release version matrix

23.002	Network architecture
23.003	Numbering, Addressing, Identification

5.01/2/3	Radio Physical layer
4.05/6	Data link layer (Air interface) - LAPDm
4.18	RR
5.08	Cell selection/reselection
24.007	Layer 3 (overall)
24.008	MM/CC
24.011	SMS
24.010	SS
24.08x, .09x	Various SS

27.001	TAF
27.007	AT commands
27.005	SMS AT commands

11.11	SIM-ME interface
11.14	Sim Application Toolkit

8.51,0.52	A-bis interface
8.54	Layer 1 of A-bis
8.56	Layer 2 of A-bis (LAPD)
8.58	Layer 3 of A-bis

8.06	A interface (use of SCCP/MTP)
8.08	A interface (BSSAP procedures)
29.002	MAP specification
29.010	Information Mapping between MS-BSS and BSS-MSC

51.010-1/2/3/4	Conformance tests
34.123-1/2/3	Conformance tests

GPRS (R99) (in addition to GSM specifications)
Location: http://www.3gpp.org/ftp/Specs/latest/R1999/ or 3gpp R99 status report
For all 3GPP specs, check out 3gpp release version matrix

23.060	GPRS description

04.60	RLC/MAC procedures
04.64	LLC procedures
04.65	SNDCP procedures

24.007/8	SM/GMM procedures

8.18	BSS-SGSN; BSSGP
8.16	BSS-SGSN; Network Service
29.060	GTP
29.016	SGSN-MSC/VLR, Gs interface

GSM/GPRS/EDGE (Rel 4 onwards)

23.002	Network architecture
23.003	Numbering, Addressing, Identification
23.060	GPRS description
22.060	GPRS UE classes etc.

45.001	Radio Physical layer (General description, Timing structure)
45.002	Phy Channels, Bursts, Mapping to slots
45.003	Phy Channel coding
45.004	Modulation
45.005	Bands, ARFCN
45.008	Cell selection/reselection criteria, Power control
45.010	Timing Advance
46.010/20/60	FR/HR/EFR Speech Transcoding
46.031/41/81	Discontinuous Transmission (DTX) for FR/HR/EFR Speech
44.004	Phy layer interface, procedures, protocol headers (both GSM and GPRS)
43.064	GPRS Um interface overall
44.005/6	LAPDm (Data Link for Signaling)
24.007	Layer 3 (includes RR) overall
44.018	RR
44.060	GPRS RLC/MAC
44.064	GPRS LLC
44.065	GPRS SNDCP

26.103	Speech Codec list for GSM - FR, HR, AMR etc.
45.009	AMR control and link Adaptation
26.071, 26.171	AMR codec (NB and WB) general description
26.101, 26.201	AMR (NB and WB) frame structure
26.901 v4	AMR NB Versus AMR WB

24.008	GSM CC/MM, GPRS GMM, and GPRS SM
23.122	NAS Idle-mode Procedures
23.009	Handover Procedures
24.011, 24.040	SMS
23.041, 44.012	Cell Broadcast Service, SMSCB

27.060	TE-MT communication

48.051/52	A-bis interface
48.054	Layer 1 of A-bis
48.056	Layer 2 of A-bis (LAPD, ITU-T Q.920 and Q.921)
48.058	Layer 3 of A-bis
52.021	Network Management on Abis

48.002	A interface, division between BSS and MSC
48.006	A interface - use of SS7/MTP/SCCP and IP/M3UA/SCTP
48.008	A interface - BSSAP
48.018	Gb (BSS-SGSN) interface - BSSGP
48.016	Gb (BSS-SGSN) interface - Network Service

48.054	Abis interface - Layer 1 (ITU-T G.70xx)
48.004	A interface - Layer 1 (ITU-T E1 or ANSI T1)
44.021, 48.020, 48.060/61	Transcoding and Rate Adaptation

51.010-1	MS Conformance test (both GSM and GPRS)
51.021	BS Conformance test (Radio aspects)

23.216	SRVCC (LTE to GSM) Single Radio Voice Call Continuity
29.280	Sv interface (MME-MSC) for SRVCC
23.272	CSFB

UMTS (Rel 5)
Location: http://www.3gpp.org/ftp/Specs/latest/Rel-5/ or 3gpp Rel 5 status report
For all 3GPP specs, check out 3gpp release version matrix.

23.002	Network architecture
23.107	QoS architecture
23.205	Bearer Independent CS Core Network
23.228	IMS
23.205	SS7 over IP or ATM
25.301	Radio interface layer
25.302	Phy layer services
24.007/8	NAS protocols
25.401	UTRAN description
25.410	UTRAN Iu interface
22.105	UMTS services/capabilities
25.420	Iur interface
25.430	Iub interface
25.321	MAC
25.322	RLC
25.323	PDCP
25.324	BMC
25.331	RRC
25.211	Phy channels and their mapping on transport channels (FDD)
25.214	Phy procedures (FDD)
25.221	Phy channels and their mapping on transport channels (TDD)
25.224	Phy procedures (TDD)
31.102	USIM (also check out ETSI TS 102 221)
31.111	USAT (also check out ETSI TS 102 223)
25.213	Phy - Spreading and Modulation (FDD)
25.223	Phy - Spreading and Modulation (TDD)
25.304	UE idle mode procedures and cell re-selection procedures in connected mode
25.212	Multiplexing and Channel coding (FDD)
25.222	Multiplexing and Channel coding (TDD)
25.101	UE radio transmission and reception (FDD)
25.102	UE radio transmission and reception (TDD)
26.071	AMR speech codec general description
25.215	Phy measurements (FDD)
25.225	Phy measurements (TDD)
25.308	HSDPA overall description

UMTS (HSPA & HSPA+)
For all 3GPP specs, check out 3gpp release version matrix.

25.308 (R6)	HSDPA overall description
25.309 (R6)	HSUPA overall description
25.211 (R6)	Phy channels and their mapping mapping on transport channels
25.321 (R6)	MAC
22.146 (R6)	MBMS stage 1
23.246 (R6)	MBMS architecture
25.346 (R6)	MBMS in RAN
26.346 (R6)	MBMS protocols and codecs
25.903 (R7)	Continuous connectivity for packet data
25.211 (R7)	Physical channels and mapping onto transport channels
25.331 (R7)	RRC
25.321 (R7)	MAC
25.876 (R7)	MIMO in UTRA

LTE (Rel 8)
Location: http://www.3gpp.org/ftp/Specs/latest/Rel-8/ or 3gpp Rel 8 status report
For all 3GPP specs, check out 3gpp release version matrix.

25.913	E-UTRA and EUTRAN requirements
36.201	E-UTRA, general description
22.278	Service requirements for Evolved Packet System
23.002	Network architecture
36.300	E-UTRA and E-UTRAN overall description
36.211	E-UTRA; Physical Channels and Modulation
23.401	E-UTRAN access
24.301	EMM and ESM
29.274	GTPv2 - C
36.413	S1AP
24.007/8	NAS overall
36.331	RRC
23.003	Numbering
33.401	SAE security architecture
33.102	3G security
31.102	USIM application
36.321	MAC
36.322	RLC
36.323	PDCP
29.281	GTPv1-U
23.203	Policy & Charging architecture
36.212	E-UTRA; Multiplexing and Channel Coding
36.213	E-UTRA; Physical Layer Procedures
36.523-1	UE Conformance tests
23.221	LTE Architectural requirements
23.272	CSFB in EPS
24.341	SMS over IP
23.204	Support of SMS over generic 3GPP IP access
27.007	AT commands
27.005	SMS AT commands
36.423	X2AP
36.842	Rel 12 Dual Connectivity study

5G (Rel 15)
Location: http://www.3gpp.org/ftp/Specs/latest/Rel-15/ or use above 3GPP search box.

38.913	Scenarios/Requirements for next generation access technologies

23.501	5G System Architecture

38.300	NR and NG-RAN Overall Description
38.304	UE procedures in idle mode and in RRC Inactive state
38.801	Radio access architecture and interfaces
38.401	NG-RAN architecture
38.331	RRC
37.324	SDAP
38.323	PDCP
38.322	RLC
38.321	MAC
38.201	Physical layer; General description
38.202	Services provided by the physical layer
38.211	Physical channels and modulation
38.212	Multiplexing, Channel coding, DCI formats
38.213	Physical layer procedures for control
38.214	Physical layer procedures for data
38.215	Physical layer measurements
38.306	User Equipment (UE) radio access capabilities

38.470/473/425	F1 (CU-DU) interface
38.460/463	E1 (CU CP-UP) interface
38.420/423/425/415	Xn (ng-eNB,gNB-ng-eNB,gNB) interface
38.410/413/415	NG (ng-eNB,gNB-NGC) interface
36.420/423/424	X2 (eNB,gNB-eNB,gNB) interface
37.340	LTE-5G NR Multi-connectivity (EN-DC)

38.101-1	User Equipment (UE) radio transmission and reception (FR1)
38.101-2	User Equipment (UE) radio transmission and reception (FR2)
38.104	Base Station (BS) radio transmission and reception
38.523-1	UE conformance
38.508-1	Common test environment for UE conformance
38.141-1 & 2	Base station (gNB) conformance

23.502	5G NAS overall
24.501	5G NAS protocol
23.122	NAS functions in idle mode (MS related)
27.007	AT commands
23.003	Numbering, Addressing, and Identification

29.500	Technical realisation of service based architecture
29.502	Session Management Services (N11 interface)
29.503	UDM services (N8 interface)
29.509	Authentication server services (N12 interface)

31.102	USIM Application

WiMAX

802.16-2009	MAC/PHY specification for both fixed and mobile WiMAX
Network	Network architecture

ETSI
Location: search at ETSI.org

102 221 (R5)	Smart Cards; UICC-Terminal interface; Physical and logical characteristics
102 223 (R5)	Smart Cards; Card Application Toolkit

SCF (Small Cell Forum)
Location: All documents at SCF

SCF082	FAPI and nFAPI specification (LTE)
SCF222	5G FAPI: PHY API

O-RAN
Location: Whitepapers, Specifications (WG wise)

Whitepapers
1) O-RAN: Towards an Open and Smart RAN
2) O-RAN Use Cases and Deployment Scenarios
3) O-RAN Minimum Viable Plan and Acceleration towards Commercialization

O-RAN.WG1.O-RAN-Architecture-Description	Architecture
O-RAN.WG4.CUS	Fronthaul Control, User, and Synchronisation planes
O-RAN.WG4.MP	Fronthaul Management plane
O-RAN.WG3.E2GAP	Near RT RIC Architecture and E2 interface
O-RAN.WG5.O-DU	O1 interface
O-RAN.WG6.CAD	Cloud Architecture and Deployment
O-RAN.WG10.OAM	Operations and Maintenance Architecture