SIST ETS 300 652:1999/A1:1999

• Abstract:

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

• Status: Published
• Publication Date: 30-Apr-1999
• ICS: 33.060.99 - Other equipment for radiocommunications
• ICS: 35.110 - Networking
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-May-1999
• Due Date: 01-May-1999
• Completion Date: 01-May-1999
• Ref Project: 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

SIST ETS 300 652:1999/A1:1999 is the SIST publication of ETSI Amendment A1 to ETS 300 652 (1996), the functional specification for Radio Equipment and Systems (RES) HIgh PErformance Radio Local Area Network (HIPERLAN) Type 1. It gives urgent technical corrections to the HIPERLAN Type 1 service definitions, protocol procedures, HMPDU and HCPDU structures, timing values, management objects, and radio-related parameters used by implementers and testers.

What does SIST ETS 300 652:1999/A1:1999 specify?

SIST ETS 300 652:1999/A1:1999 specifies changes to the functional specification for HIPERLAN Type 1. The amendment updates the way the MAC and CAC parts are described, how key protocol data units are formed and processed, and how management information is represented.

The amendment is organized as a set of replacements to specific clauses and annexes in ETS 300 652 (1996). The main changes touch clause 2 on references, clause 3 on terminology, clauses 4 to 9 on services, protocol behavior, channel access, and radio characteristics, plus informative annexes A, B, and C.

Annex	What it covers
A	Example Management Information Base (MIB) entries that HIPERLAN devices should support
B	OSI management principles and how HIPERLAN managed objects fit the management framework
C	Related ETSI, ISO/IEC, and industry documents used as background for the management material

What are the key requirements of SIST ETS 300 652:1999/A1:1999?

SIST ETS 300 652:1999/A1:1999 keeps HIPERLAN Type 1 aligned with the ISO service model and then tightens the protocol details that equipment has to implement. The practical effect is that device designers must match the amended service, timing, addressing, and frame-format rules exactly if they want interoperable behavior.

Service model and naming

• Clause 4 states that the HIPERLAN MAC service is compatible with the ISO MAC service definition, and that its operations are compatible with ISO MAC bridges for interconnection with other LANs. In practice, this is what lets HIPERLAN equipment fit into wider LAN/MAN environments.
• Clause 5 bases the HIPERLAN MAC service definition on the ISO MAC service specification and uses the descriptive conventions from ISO/IEC 10731. That matters because service primitives, parameters, and behavior are described in a way that implementers can map into software and test cases.
• Subclause 6.1.1 defines the HIPERLAN name as a fixed-length UCS-2 string of 32 16-bit characters. This gives a precise identifier format for configuration, discovery, and management.

Power-saving and neighbour handling

• Subclauses 6.3.1 and 6.3.2 define how a p-saver and a p-supporter declare recurring individual-attention and group-attendance patterns to neighbouring HM-entities. In practice, a device must announce these patterns on time and then stay ready to receive during the declared intervals.
• Table 16 sets valid ranges for the timing elements of recurring patterns, and clause 6.8 says the predefined time values used by the protocol are subject to ±5 % tolerance. That gives implementers and test labs the limits for timer configuration and conformance checking.
• Subclause 6.5.5.1 updates hello-entry processing from received HO-HMPDUs. The amendment makes the update logic depend on neighbour status and relay type, so software has to replace outdated entries and manage table space correctly.

HMPDU and HCPDU handling

• Subclause 6.6.3 is titled HMPDU transmission and retransmission and says the procedure transmits or retransmits the most important HMPDU waiting for transmission. That means scheduling and priority handling are part of protocol correctness, not just an implementation choice.
• Subclause 6.7.3.12 states that the sanity check field applies to the unencrypted MSDU, and that the field value is zero when the Key IDentifier indicates No_Key. This is a concrete parsing rule for DT-HMPDUs.
• Figures 13 to 19 and 29 to 33 define the structure of the main HMPDU and HCPDU formats, including DT-, LR-, LC-, IP-, GP-, TC-, and HO- message types. These figures are the field maps engineers use when building encoders, decoders, analyzers, and protocol tests.

Channel access and radio behavior

• Clause 8.3 says non-default channel access is communicated by CP-HCPDUs and that permissions are valid only for the configured validity time. For portable and mobile devices, this is the rule that controls when a device may use additional channels.
• Clause 9.4.1 sets the default defer threshold rule and limits any adaptive value by the Maximum Adaptive Defer Threshold (MADT). That gives a clear upper bound for implementations that use adaptive defer control.
• Clause 9.6.2.7 and clause 9.7.1 revise the synchronisation/training sequence and the modulation description, including the HIPERLAN BT setting. These are the rules that matter in physical-layer implementation and RF verification.
• Table 40 sets emission limits due to modulation and switching, and table 43 gives the minimum isotropic input levels for receiver classes A, B, and C. Those tables are used in radio compliance and sensitivity testing.

What terms does SIST ETS 300 652:1999/A1:1999 define?

• HIPERLAN name - A fixed-length identifier string for a HIPERLAN, encoded in UCS-2 as 32 16-bit characters.
• HMPDU - The HIPERLAN MAC protocol data unit used to carry HIPERLAN control and data information.
• HCPDU - The HIPERLAN control protocol data unit used in the access-control and channel-permission procedures.
• MAC service data unit (MSDU) - The data unit passed across the MAC service boundary, as referenced from ISO/IEC 15802-1.
• group-MSAP-address - A group address used at the MAC service access point level for group communication.
• Management Information Base (MIB) - The collection of managed objects and counters that HIPERLAN devices expose for management.

Who uses SIST ETS 300 652:1999/A1:1999?

SIST ETS 300 652:1999/A1:1999 is used by HIPERLAN device manufacturers, chipset and firmware developers, interoperability test labs, and compliance teams. It is also relevant to quality managers and buyers who need to check that a product supports the amended Type 1 behavior, especially for MAC procedures, management objects, and radio performance.

Network and systems engineers use it when they configure channel use, power-saving behavior, and management reporting for HIPERLAN equipment. Test and certification teams use it to verify frame formats, timing behavior, emission limits, and receiver sensitivity classes.

What changed in SIST ETS 300 652:1999/A1:1999 from the previous edition?

SIST ETS 300 652:1999/A1:1999 is an amendment to ETS 300 652 (1996), and it applies an urgent technical correction across the standard. The amendment replaces text in clause 2, updates terminology references in clause 3, revises service compatibility statements in clause 4 and clause 5, and changes the detailed behavior in clauses 6 to 9.

It also replaces or revises several protocol figures and tables, including the HMPDU and HCPDU structures, the predefined values table, the EY-NPMA activity diagram, the emission-limit table, and the receiver sensitivity table. Annex A is rewritten as an example MIB annex, annex B is rewritten as an OSI management guide, and annex C is updated with related documents.

Which standards are used with SIST ETS 300 652:1999/A1:1999?

Clause 2 names the normative references that HIPERLAN Type 1 depends on. CEPT Recommendation T/R 22-06 supplies the harmonised radio frequency bands for HIPERLANs, ISO/IEC 7498-1 supplies the OSI basic reference model, ISO/IEC 10731 supplies the OSI service description conventions, ISO/IEC 15802-1 supplies the MAC service definition, and ISO/IEC 10038 supplies the MAC bridges specification.

The same clause also points to ANSI/IEEE 802.1a and ISO/IEC 10646-1 for networking architecture terms and UCS encoding. Annex B and Annex C additionally use ISO/IEC 9595, ISO/IEC 9596-1, ISO/IEC 10164, ISO/IEC 10165-1, ISO/IEC TR 11802-2, ISO/IEC 15802-2, and ETSI documents ETR 069, ETR 133, and ETR 226 as management and background references.

What does the SIST ETS 300 652:1999/A1:1999 document contain?

SIST ETS 300 652:1999/A1:1999 contains amended protocol figures for the main HMPDU and HCPDU types, including the data, relay, hello, access, acknowledgement, control, and transmission formats. It also contains revised timing tables, predefined values, modulation notes, emission limits, and receiver input-level information used for implementation and verification.

The document includes procedures for pattern declaration, hello-entry recording, HMPDU transmission and retransmission, and channel permission handling. Annex A provides example MIB entries, annex B explains how HIPERLAN managed objects fit into OSI management, and annex C lists related standards and ETSI documents that support the management material.

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: [e-mail]
Tel.: [phone] - Fax: [phone]
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
5DGLMVNDRSUHPDLQVLVWHPL5(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: [e-mail]
Tel.: [phone] - Fax: [phone]
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

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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

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

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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

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
...