General Information

Abstract

Technical clarification of text - urgent technical correction Supporting members: Nokia, Hewlett Packard, Symbionics, Apple Computer Europe

Status
Published
Publication Date
30-Apr-1999
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-1999
Due Date
01-May-1999
Completion Date
01-May-1999

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ETSI ETS 300 652/A1 ed.1 (1997-05) - Radio Equipment and Systems (RES); HIgh PErformance Radio Local Area Network (HIPERLAN) Type 1; Functional specification

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Amendment

SIST ETS 300 652:1999/A1:1999

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Overview

SIST ETS 300 652:1999/A1:1999 is a critical standard maintained by the Slovenski inštitut za standardizacijo (SIST) and aligns with ETSI’s reference for the technical specification of High Performance Radio Local Area Network (HIPERLAN) Type 1. This document serves as an urgent technical correction and clarification to earlier versions, ensuring interoperability and compatibility for radio equipment and systems in high-performance wireless local area networks.

HIPERLAN Type 1 defines essential functionalities for advanced wireless LAN technologies, focusing on robust, high-speed data transmission across radio frequencies. These clarifications are vital for equipment manufacturers, network engineers, and system integrators, enabling consistent deployment and operation of wireless LANs that meet European telecommunication requirements.

Key Topics

  • Compatibility with International Models: Ensures alignment with established reference models such as the ISO/IEC OSI model and MAC layer service definitions, driving international interoperability.
  • Functional Enhancements: Clarifies operations for the HIPERLAN MAC protocol and its compatibility with MAC bridges and service definitions.
  • Procedural Updates: Specifies amendments to pattern timing, packet structures, and channel access mechanisms for more reliable wireless communication.
  • Management Information Base (MIB): Lists example MIB objects for HIPERLAN management, supporting advanced operational monitoring and control.
  • Quality and Security: Addresses encryption, authentication, and priority-based data handling for secure and efficient wireless network operations.
  • Performance Parameters: Details parameter ranges for timing, power, and input levels, supporting reliable and scalable wireless LAN performance.
  • OSI Management Integration: Guides the use of OSI management models and protocols such as CMIP and LAN/MAN management (ISO/IEC standards), for end-to-end network administration.

Applications

The clarified and corrected specifications in SIST ETS 300 652:1999/A1:1999 are essential for:

  • Equipment Manufacturers: Ensuring that radios, access points, and wireless adapters for HIPERLAN networks are compliant with European standards, streamlining product development and market entry.
  • Network Architects & Integrators: Enabling design and deployment of interoperable, high-performance radio LANs across public, enterprise, and industrial environments.
  • Standards Compliance Auditors: Providing a definitive reference for verifying equipment and system compatibility with established functional and management specifications.
  • IT Managers & Operators: Supporting efficient wireless network administration through management objects and procedural clarity, ensuring optimal uptime and performance.
  • Cross-Vendor Interoperability: Allowing products from different manufacturers-such as Nokia, HP, Apple, and others involved in supporting the standard-to work seamlessly within the same network infrastructure.

Related Standards

SIST ETS 300 652:1999/A1:1999 references a range of international and European standards, including:

  • CEPT Recommendation T/R 22-06: Frequency bands for HIPERLAN
  • ISO/IEC 7498-1: OSI Basic Reference Model
  • ISO/IEC 10731: OSI services conventions
  • ANSI/IEEE 802.1a: LAN/MAN overview and architecture
  • ISO/IEC 15802-1: LAN/MAN MAC service definition
  • ISO/IEC 10038: Media access control (MAC) bridges
  • ISO/IEC 10646-1: Universal Multiple-Octet Coded Character Set (UCS)
  • ETR 069, ETR 133, ETR 226: HIPERLAN services, system definitions, and time-bounded architecture
  • ISO/IEC 9595, 9596-1, 10164, 10165-1, TR 11802-2, 15802-2: OSI systems and management protocols

By following SIST ETS 300 652:1999/A1:1999, organizations ensure their radio LAN equipment and systems fully support high-performance wireless networking in accordance with leading industry and regulatory standards.

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ETSI ETS 300 652/A1 ed.1 (1997-05) - Radio Equipment and Systems (RES); HIgh PErformance Radio Local Area Network (HIPERLAN) Type 1; Functional specification

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Frequently Asked Questions

SIST ETS 300 652:1999/A1:1999 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Radio Equipment and Systems (RES); HIgh PErformance Radio Local Area Network (HIPERLAN) Type 1; Functional specification". This standard covers: Technical clarification of text - urgent technical correction Supporting members: Nokia, Hewlett Packard, Symbionics, Apple Computer Europe

Technical clarification of text - urgent technical correction Supporting members: Nokia, Hewlett Packard, Symbionics, Apple Computer Europe

SIST ETS 300 652:1999/A1:1999 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 35.110 - Networking. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST ETS 300 652:1999/A1:1999 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)


ETS 300 652
AMENDMENT A1
May 1997
Source: ETSI TC-RES Reference: RE/RES-10-12
ICS: 33.020
Key words: LAN, HIPERLAN, data, transmission
This amendment A1 modifies
the European Telecommunication Standard ETS 300 652 (1996)
Radio Equipment and Systems (RES);
HIgh PErformance Radio Local Area Network (HIPERLAN)
Type 1;
Functional specification
URGENT TECHNICAL CORRECTION
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
Copyright Notification: 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 1997. All rights reserved.

Page 2
ETS 300 652: October 1996 /A1: May 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

Page 3
ETS 300 652: October 1996/A1: May 1997
Foreword
This amendment to ETS 300 652 (1996) has been produced by the Radio Equipment and Systems (RES)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption: 18 April 1997
Date of latest announcement of this ETS (doa): 31 August 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 28 February 1998
Date of withdrawal of any conflicting National Standard (dow): 28 February 1998

Page 4
ETS 300 652: October 1996 /A1: May 1997
Amendments
Page 13, clause 2
Replace clause 2 with the following:
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] CEPT Recommendation T/R 22-06: "Relating to the harmonised radio frequency
bands for HIgh PErformance Radio Local Area Networks (HIPERLANs) in the
5 GHz and 17 GHz frequency range".
[2] ISO/IEC 7 498-1 (1994): "Information technology - Open Systems
Interconnection - Basic Reference Model: The Basic Model".
[3] (not used).
[4] (not used).
[5] ISO/IEC 10 731 (1994): "Information technology - Open Systems
Interconnection - Basic Reference Model - Conventions for the definition of OSI
services".
[6] ANSI/IEEE 802.1a (1990): "Local Area Network and Metropolitan Area Network
- Overview and Architecture".
[7] ISO/IEC 15 802-1 (1995): "Information technology - Telecommunications and
information exchange between systems - Local and metropolitan area networks
- Common specifications - Part 1: Medium Access Control (MAC) service
definition".
[8] ISO/IEC 10 038 (1993): "Information technology - Telecommunications and
information exchange between systems - Local area networks - Media access
control (MAC) bridges".
[9] ISO/IEC 10 646-1 (1993): "Information Technology - Universal Multiple-Octet
Coded Character Set (UCS) - Part 1: Architecture and Basic Multilingual Plane".
Page 14, subclause 3.1.1
Replace the first paragraph with the following:
This ETS is based on the concepts developed in the open system interconnect basic reference model and
makes use of the following terms defined in ISO/IEC 7 498-1 [2]:
Page 14, subclause 3.1.2
Replace the first paragraph with the following:
This ETS makes use of the following terms defined in ISO/IEC 10 731 [5]:
Page 14, subclause 3.1.3
Replace the first paragraph with the following:
This ETS makes use of the following terms defined in ANSI/IEEE 802.1a [6]:

Page 5
ETS 300 652: October 1996/A1: May 1997
Page 14, subclause 3.1.4
Replace the whole subclause with the following:
This ETS makes use of the following terms defined in ISO/IEC 15 802-1 [7]:
- group-MSAP-address;
- MAC service data unit (MSDU).
Page 17, clause 4
Replace the first two bullet points with the following:
- it provides a service that is compatible with the ISO MAC service definition in ISO/IEC 15 802-1 [7];
- its operations are compatible with the ISO MAC bridges specification in ISO/IEC 10 038 [8] for
interconnection with other LANs;
Page 19, clause 4
Replace the third bullet point under "HIPERLAN MAC protocol:" with the following:
- is compatible with the ISO MAC bridges specification in ISO/IEC 10 038 [8]; and
Page 23, clause 5
Replace the first paragraph with the following:
The HIPERLAN MAC service definition uses the descriptive conventions given in ISO/IEC 10 731 [5].
Page 23, clause 5
Replace the third paragraph with the following:
The HIPERLAN MAC service definition is based on the ISO MAC service specification in
ISO/IEC 15 802-1 [7].
Page 30, subclause 6.1.1
Replace the subclause with the following:
The HIPERLAN name identifies a HIPERLAN and is a fixed-length string of 32 16-bit characters encoded
in UCS-2 with implementation level 3 according to ISO/IEC 10 646-1 [9].
Page 37, table 16
Replace table 16 with the following table:
Table 16: Valid values for the timing elements of a recurring pattern
All values are integer, in milliseconds
Timing elements Valid range of value
pattern offset 0 - 10 000
pattern period 500 - 10 000
practice interval 500 - 10 000

Page 6
ETS 300 652: October 1996 /A1: May 1997
Page 37, subclause 6.3.1
Replace the whole subclause with the following:
This procedure shall be executed by a p-saver to declare its individual-attention pattern to its neighbouring
th
HM-entities, at the start of its individual-attention interval of every n individual-attention pattern period,
where n shall be an integer with a minimum value of 1 and a maximum value of:
Int( t / ( 2 × individual-attention pattern period ) )
IP
From the moment of its individual-attention pattern declaration, the p-saver shall be ready to receive
during its declared recurring individual-attention intervals.
Page 37, subclause 6.3.2
Replace the whole subclause with the following:
This procedure shall be executed by a p-supporter to declare its group-attendance pattern to its
th
neighbouring HM-entities, at the start of its group-attendance interval of every n group-attendance
pattern period, where n shall be an integer with a minimum value of 1 and a maximum value of:
Int( t / ( 2 × group-attendance pattern period ) )
GP
Page 46, subclause 6.5.5.1
Replace all the text from the paragraph "A new hello entry is recorded in ." till the end of the subclause
with the following:
If, after the completion of the above procedures, N of the neighbour entry in the local neighbour
Status
information base whose N identifies the neighbouring HM-entity is N_Sym or N_MultiRelay:
Nbour
- a new hello entry is recorded in the local hello information base for a holding time of t , where:
HO
-H and H are set to the source address parameter of the HC-UNITDATA indication
Dest Next
primitive; and
-H is set to H_NeighbourF if the value of the RTI of the received HO-HMPDU is
Status
R_Forwarder, or H_NeighbourNF if the value of the RTI is R_NonForwarder;
While recording this new hello entry, an earlier hello entry with the same H , if it exists, is
Dest
considered outdated and is replaced. If necessary, an earlier hello entry is removed to provide
sufficient space to record the new hello entry.

Page 7
ETS 300 652: October 1996/A1: May 1997
- for each { NA, NS } pair conveyed in the received HO-HMPDU, if:
- the value of the NA does not identify the local HM-entity;
- the value of the NA does not correspond to H of any hello entry in the local hello
Dest
information base whose H is H_NeighbourF or H_NeighbourNF;
Status
- the value of the RTI of the HO-HMPDU is R_Forwarder; and
- the value of the NS is N_Sym or N_MultiRelay;
a new hello entry is recorded in the local hello information base for a holding time of t , where:
HO
-H is set to the value of the NA;
Dest
-H is set to H_TwoHop; and
Status
-H is set to the source address parameter of the HC-UNITDATA indication primitive.
Next
While recording such a new hello entry, an earlier hello entry with the same H and the same
Dest
H , if it exists, is considered outdated and is replaced. If necessary, an earlier hello entry is
Next
removed to provide sufficient space to record a new hello entry.
Page 50, subclause 6.6.3
Replace the title with:
"HMPDU transmission and retransmission".
Replace the first paragraph with the following:
This procedure is executed to transmit or retransmit the most important HMPDU awaiting transmission:
Page 50, subclause 6.6.3.1
Replace the second paragraph with the following:
If the selected HMPDU is a TC-HMPDU or a DT-HMPDU which is generated (not forwarded) by the local
HM-entity and has not previously been transmitted (successfully or unsuccessfully):
Page 53, figure 12
Replace figure 12 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) 3
...
4 - n
Figure 12: The general structure of a HMPDU

Page 8
ETS 300 652: October 1996 /A1: May 1997
Page 53, figure 13
Replace figure 13 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 1 3
Residual HMPDU Lifetime field
(RL) 4 - 5
HMPDU Sequence Number field
(PSN) 6 - 7
Destination MSAP-Address field
(DA) 8 - 13
Source MSAP-Address field
(SA) 14 - 19
Alias Destination MSAP-Address field
(ADA) 20 - 25
Alias Source MSAP-Address field
(ASA) 26 - 31
User Priority field
(UP) [bit 8] MSDU Lifetime field 32
(ML)
Key IDentifier field
(KID) [bit 8-7] Initialisation Vector field 34
(IV)
35 - 37
User Data field
(UD) 38 - (n-2)
Sanity Check field
(SC) (n-1) - n
Figure 13: The structure of a DT-HMPDU
Page 54, subclause 6.7.3.12
Replace the subclause with the following:
The SC, a 2-octet field, contains the sanity check for the unencrypted MSDU. If the value of the KID is
No_Key its value shall be 0.
Page 55, figure 14
Replace figure 14 with the following:
Octet
HMPDU Length Indicator field
(LI) = 3 1 - 2
HMPDU Type Indicator field
(TI) = 2 3
Figure 14: The structure of a LR-HMPDU

Page 9
ETS 300 652: October 1996/A1: May 1997
Page 55, figure 15
Replace figure 15 with the following:
Octet
HMPDU length Indicator field
(LI) = 71 1 - 2
HMPDU Type Indicator field
(TI) = 3 3
HIPERLAN IDentifier field
(HID) 4 - 7
HIPERLAN Name field
(HN) 8 - 71
Figure 15: The structure of a LC-HMPDU
Page 55, subclause 6.7.4.2
Replace the subclause with the following:
The HN, a 64-octet field, contains the HIPERLAN name, which is a fixed-length string of 32 16-bit
characters encoded in UCS-2 with implementation level 3 according to ISO/IEC 10 646-1 [9]. The
character string starts and ends respectively at the lowest and the highest numbered octets of the HN.
Page 55, figure 16
Replace figure 16 with the following:
Octet
HMPDU Length Indicator field
(LI) = 9 1 - 2
HMPDU Type Indicator field
(TI) = 4 3
Pattern Offset field
(PO) 4 - 5
Pattern Period field
(PP) 6 - 7
Practice Interval field
(PI) 8 - 9
Figure 16: The structure of a IP-HMPDU
Page 56, figure 17
Replace figure 17 with the following:
Octet
HMPDU Length Indicator field
(LI) = 9 1 - 2
HMPDU Type Indicator field
(TI) = 5 3
Pattern Offset field
(PO) 4 - 5
Pattern Period field
(PP) 6 - 7
Practice Interval field
(PI) 8 - 9
Figure 17: The structure of a GP-HMPDU

Page 10
ETS 300 652: October 1996 /A1: May 1997
Page 56, figure 18
Replace figure 18 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 6 3
Residual HMPDU lifetime field
(RL) 4 - 5
HMPDU Sequence Number field
(PSN) 6 - 7
Originator HCSAP-Address field
(OA) 8 - 13
Multipoint relay set Sequence Number field
(MSN) (note) 14 - 15
Source Multipoint relay HCSAP-Address field
(SMA) (note) 16 - 21
{ MSN, SMA } pairs
22 - (n-8)
Multipoint relay set Sequence Number field
(MSN) (note) (n-7) - (n-6)
Source Multipoint relay HCSAP-Address field
(SMA) (note) (n-5) - n
NOTE: The MSN and the SMA exist in pairs in a TC-HMPDU. There may be 0 up to any number of
{ MSN, SMA } pairs in a TC-HMPDU, subject to the maximum size of the TC-HMPDU.
Figure 18: The structure of a TC-HMPDU
Page 57, figure 19
Replace figure 19 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 7 3
Relay Type Indicator field
(RTI) 4
Multipoint relay set Sequence Number field
(MSN) 5 - 6
Neighbour HCSAP-Address field
(NA) (note) 7 - 12
Neighbour Status field
(NS) (note) 13
{ NA, NS } pairs
14 - (n-7)
Neighbour HCSAP-Address field
(NA) (note) (n-6) - (n-1)
Neighbour Status field
(NS) (note) n
NOTE: The NA and the NS exist in pairs in a HO-HMPDU. There may be 0 up to any number of
{ NA, NS } pairs in a HO-HMPDU, subject to the maximum size of the HO-HMPDU.
Figure 19: The structure of a HO-HMPDU

Page 11
ETS 300 652: October 1996/A1: May 1997
Page 58, subclause 6.8
Replace the first paragraph with the following:
The predefined values used by the HIPERLAN MAC protocol are shown in table 18. All time values in
table 18 shall be subject to ±5 % tolerance.
Page 58, table 18
Replace table 18 with the following:
Table 18: Predefined values
Symbol Use Predefined value
t holding time for the individual-attention pattern 30 000 ms
IP
t holding time for the group-attendance pattern 30 000 ms
GP
t holding time for the information from the received TC-HMPDU 40 000 ms
TC
t holding time for the information from the received HO-HMPDU 20 000 ms
HO
t holding time for an alias entry 30 000 ms
A
l HMPDU lifetime of the LR-HMPDU 500 ms
LR
l HMPDU lifetime of the LC-HMPDU 500 ms
LC
l HMPDU lifetime of the IP-HMPDU 500 ms
IP
l HMPDU lifetime of the GP-HMPDU 500 ms
GP
l HMPDU lifetime of the TC-HMPDU 500 ms
TC
l HMPDU lifetime of the HO-HMPDU 500 ms
HO
p HMPDU priority of the IP-HMPDU 1
IP
p HMPDU priority of the GP-HMPDU 1
GP
p
...


SLOVENSKI STANDARD
01-maj-1999
5DGLMVNDRSUHPDLQVLVWHPL 5(6 =HOR]PRJOMLYRUDGLMVNRORNDOQRRPUHåMH
+,3(5/$1 WLS6SHFLILNDFLMDIXQNFLM1XMQLWHKQLþQLSRSUDYNL
Radio Equipment and Systems (RES); HIgh PErformance Radio Local Area Network
(HIPERLAN) Type 1; Functional specification
Ta slovenski standard je istoveten z: ETS 300 652/A1 Edition 1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETS 300 652
AMENDMENT A1
May 1997
Source: ETSI TC-RES Reference: RE/RES-10-12
ICS: 33.020
Key words: LAN, HIPERLAN, data, transmission
This amendment A1 modifies
the European Telecommunication Standard ETS 300 652 (1996)
Radio Equipment and Systems (RES);
HIgh PErformance Radio Local Area Network (HIPERLAN)
Type 1;
Functional specification
URGENT TECHNICAL CORRECTION
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
Copyright Notification: 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 1997. All rights reserved.

Page 2
ETS 300 652: October 1996 /A1: May 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

Page 3
ETS 300 652: October 1996/A1: May 1997
Foreword
This amendment to ETS 300 652 (1996) has been produced by the Radio Equipment and Systems (RES)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption: 18 April 1997
Date of latest announcement of this ETS (doa): 31 August 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 28 February 1998
Date of withdrawal of any conflicting National Standard (dow): 28 February 1998

Page 4
ETS 300 652: October 1996 /A1: May 1997
Amendments
Page 13, clause 2
Replace clause 2 with the following:
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] CEPT Recommendation T/R 22-06: "Relating to the harmonised radio frequency
bands for HIgh PErformance Radio Local Area Networks (HIPERLANs) in the
5 GHz and 17 GHz frequency range".
[2] ISO/IEC 7 498-1 (1994): "Information technology - Open Systems
Interconnection - Basic Reference Model: The Basic Model".
[3] (not used).
[4] (not used).
[5] ISO/IEC 10 731 (1994): "Information technology - Open Systems
Interconnection - Basic Reference Model - Conventions for the definition of OSI
services".
[6] ANSI/IEEE 802.1a (1990): "Local Area Network and Metropolitan Area Network
- Overview and Architecture".
[7] ISO/IEC 15 802-1 (1995): "Information technology - Telecommunications and
information exchange between systems - Local and metropolitan area networks
- Common specifications - Part 1: Medium Access Control (MAC) service
definition".
[8] ISO/IEC 10 038 (1993): "Information technology - Telecommunications and
information exchange between systems - Local area networks - Media access
control (MAC) bridges".
[9] ISO/IEC 10 646-1 (1993): "Information Technology - Universal Multiple-Octet
Coded Character Set (UCS) - Part 1: Architecture and Basic Multilingual Plane".
Page 14, subclause 3.1.1
Replace the first paragraph with the following:
This ETS is based on the concepts developed in the open system interconnect basic reference model and
makes use of the following terms defined in ISO/IEC 7 498-1 [2]:
Page 14, subclause 3.1.2
Replace the first paragraph with the following:
This ETS makes use of the following terms defined in ISO/IEC 10 731 [5]:
Page 14, subclause 3.1.3
Replace the first paragraph with the following:
This ETS makes use of the following terms defined in ANSI/IEEE 802.1a [6]:

Page 5
ETS 300 652: October 1996/A1: May 1997
Page 14, subclause 3.1.4
Replace the whole subclause with the following:
This ETS makes use of the following terms defined in ISO/IEC 15 802-1 [7]:
- group-MSAP-address;
- MAC service data unit (MSDU).
Page 17, clause 4
Replace the first two bullet points with the following:
- it provides a service that is compatible with the ISO MAC service definition in ISO/IEC 15 802-1 [7];
- its operations are compatible with the ISO MAC bridges specification in ISO/IEC 10 038 [8] for
interconnection with other LANs;
Page 19, clause 4
Replace the third bullet point under "HIPERLAN MAC protocol:" with the following:
- is compatible with the ISO MAC bridges specification in ISO/IEC 10 038 [8]; and
Page 23, clause 5
Replace the first paragraph with the following:
The HIPERLAN MAC service definition uses the descriptive conventions given in ISO/IEC 10 731 [5].
Page 23, clause 5
Replace the third paragraph with the following:
The HIPERLAN MAC service definition is based on the ISO MAC service specification in
ISO/IEC 15 802-1 [7].
Page 30, subclause 6.1.1
Replace the subclause with the following:
The HIPERLAN name identifies a HIPERLAN and is a fixed-length string of 32 16-bit characters encoded
in UCS-2 with implementation level 3 according to ISO/IEC 10 646-1 [9].
Page 37, table 16
Replace table 16 with the following table:
Table 16: Valid values for the timing elements of a recurring pattern
All values are integer, in milliseconds
Timing elements Valid range of value
pattern offset 0 - 10 000
pattern period 500 - 10 000
practice interval 500 - 10 000

Page 6
ETS 300 652: October 1996 /A1: May 1997
Page 37, subclause 6.3.1
Replace the whole subclause with the following:
This procedure shall be executed by a p-saver to declare its individual-attention pattern to its neighbouring
th
HM-entities, at the start of its individual-attention interval of every n individual-attention pattern period,
where n shall be an integer with a minimum value of 1 and a maximum value of:
Int( t / ( 2 × individual-attention pattern period ) )
IP
From the moment of its individual-attention pattern declaration, the p-saver shall be ready to receive
during its declared recurring individual-attention intervals.
Page 37, subclause 6.3.2
Replace the whole subclause with the following:
This procedure shall be executed by a p-supporter to declare its group-attendance pattern to its
th
neighbouring HM-entities, at the start of its group-attendance interval of every n group-attendance
pattern period, where n shall be an integer with a minimum value of 1 and a maximum value of:
Int( t / ( 2 × group-attendance pattern period ) )
GP
Page 46, subclause 6.5.5.1
Replace all the text from the paragraph "A new hello entry is recorded in ." till the end of the subclause
with the following:
If, after the completion of the above procedures, N of the neighbour entry in the local neighbour
Status
information base whose N identifies the neighbouring HM-entity is N_Sym or N_MultiRelay:
Nbour
- a new hello entry is recorded in the local hello information base for a holding time of t , where:
HO
-H and H are set to the source address parameter of the HC-UNITDATA indication
Dest Next
primitive; and
-H is set to H_NeighbourF if the value of the RTI of the received HO-HMPDU is
Status
R_Forwarder, or H_NeighbourNF if the value of the RTI is R_NonForwarder;
While recording this new hello entry, an earlier hello entry with the same H , if it exists, is
Dest
considered outdated and is replaced. If necessary, an earlier hello entry is removed to provide
sufficient space to record the new hello entry.

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ETS 300 652: October 1996/A1: May 1997
- for each { NA, NS } pair conveyed in the received HO-HMPDU, if:
- the value of the NA does not identify the local HM-entity;
- the value of the NA does not correspond to H of any hello entry in the local hello
Dest
information base whose H is H_NeighbourF or H_NeighbourNF;
Status
- the value of the RTI of the HO-HMPDU is R_Forwarder; and
- the value of the NS is N_Sym or N_MultiRelay;
a new hello entry is recorded in the local hello information base for a holding time of t , where:
HO
-H is set to the value of the NA;
Dest
-H is set to H_TwoHop; and
Status
-H is set to the source address parameter of the HC-UNITDATA indication primitive.
Next
While recording such a new hello entry, an earlier hello entry with the same H and the same
Dest
H , if it exists, is considered outdated and is replaced. If necessary, an earlier hello entry is
Next
removed to provide sufficient space to record a new hello entry.
Page 50, subclause 6.6.3
Replace the title with:
"HMPDU transmission and retransmission".
Replace the first paragraph with the following:
This procedure is executed to transmit or retransmit the most important HMPDU awaiting transmission:
Page 50, subclause 6.6.3.1
Replace the second paragraph with the following:
If the selected HMPDU is a TC-HMPDU or a DT-HMPDU which is generated (not forwarded) by the local
HM-entity and has not previously been transmitted (successfully or unsuccessfully):
Page 53, figure 12
Replace figure 12 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) 3
...
4 - n
Figure 12: The general structure of a HMPDU

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ETS 300 652: October 1996 /A1: May 1997
Page 53, figure 13
Replace figure 13 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 1 3
Residual HMPDU Lifetime field
(RL) 4 - 5
HMPDU Sequence Number field
(PSN) 6 - 7
Destination MSAP-Address field
(DA) 8 - 13
Source MSAP-Address field
(SA) 14 - 19
Alias Destination MSAP-Address field
(ADA) 20 - 25
Alias Source MSAP-Address field
(ASA) 26 - 31
User Priority field
(UP) [bit 8] MSDU Lifetime field 32
(ML)
Key IDentifier field
(KID) [bit 8-7] Initialisation Vector field 34
(IV)
35 - 37
User Data field
(UD) 38 - (n-2)
Sanity Check field
(SC) (n-1) - n
Figure 13: The structure of a DT-HMPDU
Page 54, subclause 6.7.3.12
Replace the subclause with the following:
The SC, a 2-octet field, contains the sanity check for the unencrypted MSDU. If the value of the KID is
No_Key its value shall be 0.
Page 55, figure 14
Replace figure 14 with the following:
Octet
HMPDU Length Indicator field
(LI) = 3 1 - 2
HMPDU Type Indicator field
(TI) = 2 3
Figure 14: The structure of a LR-HMPDU

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ETS 300 652: October 1996/A1: May 1997
Page 55, figure 15
Replace figure 15 with the following:
Octet
HMPDU length Indicator field
(LI) = 71 1 - 2
HMPDU Type Indicator field
(TI) = 3 3
HIPERLAN IDentifier field
(HID) 4 - 7
HIPERLAN Name field
(HN) 8 - 71
Figure 15: The structure of a LC-HMPDU
Page 55, subclause 6.7.4.2
Replace the subclause with the following:
The HN, a 64-octet field, contains the HIPERLAN name, which is a fixed-length string of 32 16-bit
characters encoded in UCS-2 with implementation level 3 according to ISO/IEC 10 646-1 [9]. The
character string starts and ends respectively at the lowest and the highest numbered octets of the HN.
Page 55, figure 16
Replace figure 16 with the following:
Octet
HMPDU Length Indicator field
(LI) = 9 1 - 2
HMPDU Type Indicator field
(TI) = 4 3
Pattern Offset field
(PO) 4 - 5
Pattern Period field
(PP) 6 - 7
Practice Interval field
(PI) 8 - 9
Figure 16: The structure of a IP-HMPDU
Page 56, figure 17
Replace figure 17 with the following:
Octet
HMPDU Length Indicator field
(LI) = 9 1 - 2
HMPDU Type Indicator field
(TI) = 5 3
Pattern Offset field
(PO) 4 - 5
Pattern Period field
(PP) 6 - 7
Practice Interval field
(PI) 8 - 9
Figure 17: The structure of a GP-HMPDU

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ETS 300 652: October 1996 /A1: May 1997
Page 56, figure 18
Replace figure 18 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 6 3
Residual HMPDU lifetime field
(RL) 4 - 5
HMPDU Sequence Number field
(PSN) 6 - 7
Originator HCSAP-Address field
(OA) 8 - 13
Multipoint relay set Sequence Number field
(MSN) (note) 14 - 15
Source Multipoint relay HCSAP-Address field
(SMA) (note) 16 - 21
{ MSN, SMA } pairs
22 - (n-8)
Multipoint relay set Sequence Number field
(MSN) (note) (n-7) - (n-6)
Source Multipoint relay HCSAP-Address field
(SMA) (note) (n-5) - n
NOTE: The MSN and the SMA exist in pairs in a TC-HMPDU. There may be 0 up to any number of
{ MSN, SMA } pairs in a TC-HMPDU, subject to the maximum size of the TC-HMPDU.
Figure 18: The structure of a TC-HMPDU
Page 57, figure 19
Replace figure 19 with the following:
Octet
HMPDU Length Indicator field
(LI) = n 1 - 2
HMPDU Type Indicator field
(TI) = 7 3
Relay Type Indicator field
(RTI) 4
Multipoint relay set Sequence Number field
(MSN) 5 - 6
Neighbour HCSAP-Address field
(NA) (note) 7 - 12
Neighbour Status field
(NS) (note) 13
{ NA, NS } pairs
14 - (n-7)
Neighbour HCSAP-Address field
(NA) (note) (n-6) - (n-1)
Neighbour Status field
(NS) (note) n
NOTE: The NA and the NS exist in pairs in a HO-HMPDU. There may be 0 up to any number of
{ NA, NS } pairs in a HO-HMPDU, subject to the maximum size of the HO-HMPDU.
Figure 19: The structure of a HO-HMPDU

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Page 58, subclause 6.8
Replace the first paragraph with the following:
The predefined values used by the HIPERLAN MAC protocol are shown in table 18. All time values in
table 18 shall be subject to ±5 % tolerance.
Page 58, table 18
Replace table 18 with the following:
Table 18: Predefined values
Symbol Use Predefined value
t holding time for the individual-attention pattern 30 000 ms
IP
t holding time for the group-attendance pattern 30 000 ms
GP
t holding time for the information from the received TC-HMPDU 40 000 ms
TC
t holding time for the information from
...