Abstract

To provide update with regard to known problems, changes in other standards and new ideas.

Status
Published
Publication Date
30-Jun-2005
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-2005
Due Date
01-Jul-2005
Completion Date
01-Jul-2005

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SIST EN 301 649 V1.3.1:2005

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SIST EN 301 649 V1.3.1:2005 is the Slovenian adoption of ETSI EN 301 649 Version 1.3.1, published by SIST. It specifies Digital Enhanced Cordless Telecommunications (DECT) Packet Radio Service (DPRS), the packet-data service set for DECT systems conforming to EN 300 175 parts 1 to 7. The standard is for implementers of DECT terminals and fixed infrastructure that need packet data, interworking and mobility support.

What does SIST EN 301 649 V1.3.1:2005 specify?

SIST EN 301 649 V1.3.1:2005 specifies how packet-data services are carried over the DECT air interface. It gives minimum requirements that all conforming implementations have to support, plus optional features that can be fixed for service class 1 or negotiated at call setup for service class 2.

The document is organized from general service description down to protocol-layer requirements and procedures. It then ends with normative annexes for operating parameters, interworking conventions and optional double-slot support.

AnnexWhat it covers
Annex AOperating parameters, including management entity parameters and configuration capabilities
Annex BInterworking conventions for the Frame Relay (FREL) service
Annex CWireless V.24 [15] service conventions and character-oriented service interworking
Annex DDouble slot support

What are the key requirements of SIST EN 301 649 V1.3.1:2005?

Service model and radio support

Clause 4 defines DPRS as the packet-data service framework on top of DECT. SIST EN 301 649 V1.3.1:2005 states that some options are preconfigured for service class 1, while service class 2 allows negotiation at setup. In practice, that means a product either follows a fixed profile or negotiates service and user parameters when the connection is created.

Clause 4.2 sets performance objectives for supported service behavior, including supported SDU size, delay target and throughput objective. For a reader, this is the part that tells you whether the profile is aimed at low-latency, higher-throughput packet data or at narrower services such as framed or character-oriented interworking.

Clause 5 requires PHL support in line with EN 300 444 [8], clause 11, and defines the allowed modulation combinations from EN 300 175-2 [2], annex D. That matters because radio design and conformance testing depend on which modulation schemes are declared as supported.

MAC, DLC and NWK behavior

Clause 6 lists the MAC services that DPRS uses, including general service, continuous broadcast, paging broadcast, advanced connections and the I_error_detect service. Optional services include non-continuous broadcast, I_error_correct, U-plane point-to-multipoint service and double slot support. In practice, an implementation must clearly support and signal the services it claims, because the peer side uses that information when setting up bearers and paging.

Clause 7 defines the DLC-layer services used by DPRS, including LU10 Enhanced Frame RELay service (EFREL), FU10a, FU10b, FU10c, class A and class U data link services, Lc frame delimiting and sequencing service, and broadcast Lb service. Clause 11 then turns those service definitions into procedures. This is the section that governs how packets are framed, segmented, sequenced and moved between MAC and NWK.

Clause 8 defines the NWK-layer entities for DPRS: Call Control (CC), Mobility Management (MM), Link Control Entity (LCE) and Connectionless Message Service (CLMS). The standard says that only mobility class 2 equipment requires a NWK layer, while mobility class 1 uses configuration parameters from Annex A. It also covers outgoing and incoming call handling, service negotiation, bandwidth change, temporary identity assignment, fast paging, direct and indirect link establishment, broadcast attributes, U-plane handling and NWK message length.

Management entity and connection control

Clause 9 gives the Management Entity (ME) rules for resource control, physical connection management and logical connection management. It includes resumption, suspension, bandwidth modification and the handshake, or stay alive, procedure. For implementation work, this is where the connection state machine is constrained, including when the FP or PP may ask to resume, suspend or change a connection.

Clause 9.3 uses LCE-resume paging when a previous setup fails, and it distinguishes fast paging from normal paging. Clause 9.4 requires the handshake to keep a suspended logical connection from remaining suspended beyond the defined timer behavior. Annex A provides the operating parameters behind these rules, including the waiting-time parameters used by the FP and PP. That matters because timer settings and state handling determine whether the connection continues or is released.

Procedures that testers usually verify

Clauses 10 to 12 are the procedural core of the standard. They define MAC paging, bearer setup and release, connection modification, encryption, quality control, bearer replacement and bearer handover, then move on to NWK procedures such as call requests, service change, dynamic parameters allocation, cipher-switching, temporary identity assignment and fast paging. This is the part most conformance tests focus on, because it tells the device what to send, accept and process.

Clause 12 also limits the length of NWK-layer messages and defines how identities are handled. In practice, that means implementers have to size buffers and message segmentation correctly, and they have to accept the identity types required by the profile.

Annex-driven interworking and optional modes

Annex B defines Frame Relay interworking conventions, including support for ISO/IEC 8802-3/Ethernet, ISO/IEC 8802-5 (Token Ring), Internet protocol and Point-to-Point Protocol. Annex C does the same for wireless V.24 [15] service conventions, including encapsulation, circuit mapping and user control information elements. Annex D covers double slot support and the related frame, modulation, connection and call-establishment requirements. These annexes matter when DPRS has to connect to real external networks or emulate data-terminal interfaces.

What terms does SIST EN 301 649 V1.3.1:2005 define?

  • Digital Enhanced Cordless Telecommunications (DECT) - the cordless telecommunications framework on which DPRS is built.
  • DECT Packet Radio Service (DPRS) - the packet-data service set defined by this standard for DECT systems.
  • Fixed Part (FP) - the fixed side of the DECT system that manages resources, paging and connections.
  • Portable Part (PP) - the portable side of the system that participates in paging, connection setup and service negotiation.
  • Portable radio Termination (PT) - the radio termination used in the DECT procedures and mappings in the standard.
  • Management Entity (ME) - the entity responsible for managing physical resources and logical associations across the protocol layers.
  • Network (NWK) - the layer that covers Call Control, Mobility Management, Link Control Entity and Connectionless Message Service.
  • Data Link Control (DLC) - the layer that carries EFREL, FU10 and class A/U data link services.

Who uses SIST EN 301 649 V1.3.1:2005?

SIST EN 301 649 V1.3.1:2005 is used by DECT terminal vendors, fixed-part and base-station designers, chipset and protocol-stack developers, and system integrators. It is also used by test labs and quality teams that need to check which services are mandatory, optional or conditional for class 1 and class 2 equipment.

It is particularly relevant where packet-data terminals have to connect to fixed infrastructure, both private and public. Interworking gateway designers use it when DECT has to carry Frame Relay, Ethernet, Token Ring, IP or PPP traffic, or when a wireless V.24-style service is needed.

Which standards are used with SIST EN 301 649 V1.3.1:2005?

  • EN 300 175 parts 1 to 7 - the base DECT air-interface standard family that DPRS builds on.
  • EN 300 175-2 - provides the modulation schemes used in the PHL requirements.
  • EN 300 175-3 - provides MAC-layer procedures and message formats used throughout the DPRS MAC clauses.
  • EN 300 175-4 - provides DLC-layer procedures and primitives used by the DPRS DLC clauses.
  • EN 300 175-5 - provides NWK-layer procedures, service negotiation and information elements used by DPRS.
  • EN 300 175-6 - provides identity structures and related identity handling.
  • EN 300 175-7 - provides the encryption switching procedures referenced by DPRS.
  • EN 300 444 - provides call control and mobility management procedures that DPRS modifies or reuses.
  • EN 300 824 - is cited for some NWK procedures that DPRS references and adapts.
  • ISO/IEC 8802-3 - supports Annex B interworking to Ethernet.
  • ISO/IEC 8802-5 - supports Annex B interworking to Token Ring.
  • RFC 791 - supports Annex B interworking to IP.
  • RFC 1661 - supports Annex B interworking to PPP.
  • ITU-T Recommendation V.24 - supports Annex C wireless V.24 service conventions.

What does the SIST EN 301 649 V1.3.1:2005 document contain?

The standard contains service definitions, service support tables, protocol-layer requirements and detailed procedures for MAC, DLC and NWK operation. It also includes message-format tables, parameter codings, state and flow diagrams, and example exchange sequences for setup, bandwidth change, paging and bearer handling.

Annex B and Annex C contain the most interworking detail, including codings for IWU-ATTRIBUTES, encapsulation rules, circuit mappings and user control information elements. Annex A gives the operating parameters that control resumption, congestion and suspension timing, and Annex D adds the extra requirements for double slot support.

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SIST EN 301 649 V1.3.1:2005

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Frequently Asked Questions

SIST EN 301 649 V1.3.1:2005 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS)". This standard covers: To provide update with regard to known problems, changes in other standards and new ideas.

To provide update with regard to known problems, changes in other standards and new ideas.

SIST EN 301 649 V1.3.1:2005 is classified under the following ICS (International Classification for Standards) categories: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT). The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 301 649 V1.3.1:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-julij-2005
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH '(&7 3DNHWQDUDGLMVND
VWRULWHY'(&7 '356
Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service
(DPRS)
Ta slovenski standard je istoveten z: EN 301 649 Version 1.3.1
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Digital Enhanced Cordless Telecommunications (DECT);
DECT Packet Radio Service (DPRS)

2 ETSI EN 301 649 V1.3.1 (2003-03)

Reference
REN/DECT-A0190
Keywords
data, DECT, DPRS, layer 2, mobility, profile,
radio
ETSI
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Users of the present document should be aware that the document may be subject to revision or change of status.
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No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2003.
All rights reserved.
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ETSI
3 ETSI EN 301 649 V1.3.1 (2003-03)
Contents
Intellectual Property Rights.10
Foreword.10
1 Scope.11
2 References.11
3 Definitions, symbols and abbreviations .12
3.1 Definitions.12
3.2 Symbols.13
3.3 Abbreviations.14
4 Description of services.15
4.1 Data services structure.15
4.2 Service objectives.17
4.3 Service definitions.17
4.3.1 PHL service definitions .17
4.3.2 MAC service definitions.17
4.3.3 DLC service definitions .19
4.3.4 NWK feature definitions.20
4.3.5 Application service definitions.21
4.3.6 Distributed Communication.22
4.3.7 Management Entity.22
4.4 General Class/Service/Interworking support.22
5 PHL requirements.23
5.1 General requirements.23
5.2 Modulation schemes.23
6 MAC layer requirements.23
6.1 MAC services.23
6.2 MAC service to procedure mapping.24
7 DLC-layer requirements.26
7.1 DLC services.26
7.2 DLC feature to procedure mapping.26
8 NWK layer requirements.27
8.1 NWK features.28
8.2 NWK feature to procedure mapping .29
8.3 Application features.31
8.4 Application feature to procedure mapping .32
8.5 Distributed Communications.32
9 Management Entity Requirements .33
9.1 Introduction.33
9.2 Description of the DPRS operation principles.33
9.2.1 General.33
9.2.2 Service class 1.33
9.2.3 Service class 2.34
9.3 Resource and physical connection management .34
9.3.1 Requirements applicable to the Fixed Part (FP) .34
9.3.1.1 Conditions for resumption and management procedures .34
9.3.1.1.1 General.34
9.3.1.1.2 ME procedures for FT initiated connection resumption.34
9.3.1.2 Connection Suspension conditions.35
9.3.1.2.1 General.35
9.3.1.2.2 Connection suspension due to no data activity.36
9.3.1.2.3 Connection suspension due to violation of the minimum number of bearers (MAC Bandwidth
command).36
ETSI
4 ETSI EN 301 649 V1.3.1 (2003-03)
9.3.1.2.4 Connection suspension by loss of all received bearers.36
9.3.1.2.5 Activation of Fast Scan mode after Connection suspension.36
9.3.1.3 Conditions for Bandwidth modification.36
9.3.1.3.1 General.36
9.3.2 Requirements applicable to the Portable Part (PP) .36
9.3.2.1 Conditions for connection resumption .36
9.3.2.1.1 Procedure for PT initiated Connection resumption .37
9.3.2.1.2 "RFP-busy-for-data" flag.37
9.3.2.1.3 Waiting time for collision avoidance after deactivation of "RFP-busy-for-data" flag.37
9.3.2.1.4 Bandwidth after resumption .37
9.3.2.1.5 Resumption rejection by the FP.37
9.3.2.2 Conditions for Connection Suspension .37
9.3.2.2.1 General.37
9.3.2.2.2 Connection suspension due to no data activity.38
9.3.2.2.3 Connection suspension due to violation of the minimum number of bearers (MAC Bandwidth
command).38
9.3.2.2.4 Connection suspension by loss of all received bearers.38
9.3.2.2.5 Activation of fast scan mode after Connection suspension .38
9.3.2.3 Conditions for Bandwidth modification.38
9.3.2.3.1 General.38
9.4 Logical Connection management.38
9.4.1 Requirements for class 1 devices.39
9.4.2 Requirements for class 2 devices.39
9.4.2.1 General Description.39
9.4.2.2 Normal procedures of virtual call set-up and release .39
9.4.2.3 Abnormal release of Virtual Calls.39
9.4.2.4 Release of Logical Connection .39
9.4.3 The handshake (stay alive) procedure.39
10 MAC layer procedures .40
10.1 General.40
10.1.1 Frame and multiframe structure.40
10.1.2 Bit mappings.40
10.1.3 Time multiplexers.41
10.1.4 Scrambling.41
10.1.5 Error control.41
10.1.6 A-tail identifications.41
10.1.7 B-field identifications.41
10.1.8 RFP idle receiver scan sequence.41
10.1.9 PT receiver scan sequence .42
10.1.10 PP states and state transitions .42
10.1.11 Identities.42
10.2 Non continuous broadcast .42
10.2.1 Request for specific Q channel information.42
10.2.2 Request for a new dummy .42
10.3 Downlink broadcast.43
10.3.1 N messages.43
T
10.3.2 Q messages.43
T
10.3.2.1 Q - static system information.43
T
10.3.2.2 Q - FP capabilities .44
T
10.3.2.2.1 Standard FP Capabilities .44
10.3.2.2.2 Extended FP Capabilities.45
10.3.2.3 Q - SARI list contents.45
T
10.3.2.4 Multiframe number.45
10.4 Paging broadcast.46
10.4.1 Paging message formats.46
10.4.1.1 Long or full page message format.46
10.4.1.2 Short page message format .46
10.4.1.3 Zero length page message format.47
10.4.1.4 MAC resume page message format .47
10.4.1.5 MAC layer information in zero and short length paging messages.48
10.4.1.5.1 RFP status.48
ETSI
5 ETSI EN 301 649 V1.3.1 (2003-03)
10.4.2 MAC layer information messages procedures .49
10.4.2.1 Blind slot information for circuit mode service .49
10.4.2.2 Bearer handover/replacement information.49
10.4.2.3 Other bearer position.49
10.4.2.4 Recommended other bearer position.49
10.4.2.5 Dummy or C/L bearer position .49
10.4.2.6 C/L bearer position.49
10.4.2.7 RFP-status and Modulation Types .50
10.4.2.8 Blind slot information for packet mode service .50
10.4.3 Normal paging.50
10.4.4 Fast paging.50
10.4.5 Low duty cycle paging.50
10.4.6 MAC paging.50
10.5 Logical Connection Setup .50
10.6 Logical Connection Release.50
10.7 Connection Modification.51
10.7.1 Connection Modification to change bandwidth .51
10.7.1.1 Bandwidth negotiation.51
10.7.1.2 Bandwidth modification.53
10.7.1.3 Suspend.53
10.7.1.4 Resume.55
10.7.1.5 Bandwidth modification rejection.55
10.7.2 Connection modification to change service type .56
10.7.3 Connection modification to change the modulation scheme .56
10.7.4 ATTRIBUTES_T.req/cfm.57
10.8 Physical Connection Setup.57
10.8.1 Single bearer physical connection setup .57
10.8.2 Multibearer Physical Connection setup .57
10.9 Physical Connection Release.58
10.10 Bearer Setup.58
10.10.1 Single duplex bearer setup.58
10.10.1.1 PT initiated Single duplex bearer setup.59
10.10.1.2 FT initiated Single duplex bearer setup.59
10.10.1.3 Usage of channel list messages for single duplex bearer setup.60
10.10.2 Double simplex bearer setup.60
10.11 Bearer Release.62
10.11.1 Unacknowledged release.62
10.11.2 Acknowledged release.62
10.11.3 Fast release.63
10.12 Advanced connection handover.63
10.13 I channel operation .63
10.13.1 Protected I channel error_detect mode.63
10.13.2 Protected I channel error_correct mode.64
10.13.2.1 Unilateral jump.64
10.13.2.2 Bearer reset.64
10.13.3 Connectionless SI mode .64
P
10.14 C channel operation.64
10.14.1 C channel.64
S
10.14.2 C channel.65
F
10.15 Encryption.65
10.15.1 Encryption process - initialization and synchronization .65
10.15.2 Encryption mode control.66
10.15.2.1 M message.67
T
10.15.2.2 PT procedure for enabling encryption.67
10.15.2.3 PT procedure for disabling encryption.67
10.15.3 Handover encryption process.67
10.16 Quality control.67
10.16.1 RFPI handshake.67
10.16.2 PT frequency correction.67
10.16.3 Bearer quality report .68
10.16.4 Bearer and connection control .68
10.16.5 A-CRC handshake.69
ETSI
6 ETSI EN 301 649 V1.3.1 (2003-03)
10.17 Physical channel selection.69
10.18 Bearer replacement.69
10.19 Bearer handover request.69
10.20 G channel .70
F
10.20.1 G channel data.70
F
11 DLC layer procedures .70
11.1 LU10 Enhanced Frame RELay service (EFREL) .70
11.1.1 Window size.70
11.1.2 U-plane transmission class 2.71
11.1.2.1 Sending side procedures.71
11.1.2.2 Receiving side procedure .71
11.2 FU 10 framing (FU10a, FU10b, FU10c).71
11.2.1 FU10a.71
11.2.2 FU10b.71
11.2.3 FU10c.72
11.3 Class A operation.72
11.3.1 Class A link establishment.72
11.3.1.1 Lower Layer Management Entity (LLME) establishment of a MAC connection.72
11.3.2 Class A acknowledged information transfer.74
11.3.3 Class A link release.74
11.3.4 Class A link re-establishment .74
11.4 Class U operation .74
11.4.1 Class U use of LLN for unacknowledged information transfer .75
11.4.2 Class U link establishment.75
11.4.3 Class U unacknowledged information transfer.75
11.4.4 Class U unacknowledged release.75
11.5 Lc frame delimiting and sequencing service .75
11.5.1 C channel fragmentation and recombination.75
S
11.5.2 C channel fragmentation and recombination.75
F
11.5.3 Selection of logical channels (C and C ).75
S F
11.6 Broadcast Lb service .75
11.6.1 Normal broadcast.75
11.6.2 Expedited broadcast.77
11.7 Connection handover.77
11.7.1 Class A connection handover.77
11.7.1.1 Voluntary handover.78
11.7.1.2 Associated procedure.78
11.7.1.2.1 LLME connection handover management.78
11.7.1.3 Exceptional case.78
11.7.1.3.1 Receipt of a request for link release .78
11.8 Connection modification.78
11.9 Encryption switching.80
11.9.1 Associated procedure.80
11.9.1.1 Providing Encryption key to the MAC layer.80
11.9.2 Exceptional cases.80
11.9.2.1 Encryption fails.80
11.9.2.2 Connection handover of ciphered connections.80
11.10 Connectionless point-to-multipoint transmission.80
12 NWK layer procedures.81
12.1 Outgoing call request.81
12.2 Incoming call request .81
12.3 Terminal capability indication.82
12.4 Internal call keypad.83
12.5 Call Resources/Parameters negotiation .83
12.5.1 Default values.90
12.5.2 Exceptional cases.92
12.6 Bandwidth Change.92
12.6.1 Associated procedures.95
12.6.1.1 Timer F/P < CC_service > management .95
12.6.2 Exceptional cases.95
ETSI
7 ETSI EN 301 649 V1.3.1 (2003-03)
12.6.2.1 Service change request is rejected.95
12.6.3 Examples.96
12.7 IWU-attributes change.96
12.8 Dynamic Parameters Allocation.97
12.8.1 Default Dynamic Parameters Allocation .101
12.9 Cipher-switching initiated by PT.101
12.10 Temporary Identity Assign.102
12.10.1 Associated procedures.102
12.10.1.1 Timer F-< MM_ident.1 > management.102
12.10.2 Exceptional cases.103
12.10.2.1 PT rejects the identity assignment.103
12.11 Indirect FT initiated link establishment.103
12.12 Fast paging.104
12.13 Collective and Group Ringing.104
12.14 Direct FT initiated link establishment .104
12.14.1 Exceptional case.106
12.14.1.1 Link establishment failure.106
12.15 LCE Resume Paging.106
12.16 Broadcast attributes management.107
12.17 U-plane handling.108
12.18 Management of MM procedures .109
12.19 Management - PMID.109
12.20 Length of NWK layer messages.109
12.21 Identities.109
13 Distributed Communications.109
13.1 Void.109
13.2 General Requirements.109
13.2.1 DCDL-net.109
13.2.2 Subscription.110
13.2.3 Communication.110
13.3 Procedure description.110
13.3.1 HyP Identities.
...