ETSI ETS 300 175-2 ed.2 (1996-09)

Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 2: Physical Layer (PHL)

RE/RES-03027-2

Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 2. del: Fizična plast (PHL)

General Information

• Status: Published
• Publication Date: 19-Sep-1996
• Technical Committee: RES 3 - DECT
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 28-Sep-2001
• Ref Project: SIST ETS 300 175-2:1999 - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 2: Physical Layer (PHL)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 175-2:1999
01-julij-1999
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH'(&76NXSQLYPHVQLN&,
GHO)L]LþQDSODVW3+/
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 2:
Physical Layer (PHL)
Ta slovenski standard je istoveten z: ETS 300 175-2 Edition 2
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
35.100.10 )L]LþQLVORM Physical layer
SIST ETS 300 175-2:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 175-2:1999

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SIST ETS 300 175-2:1999
EUROPEAN ETS 300 175-2
TELECOMMUNICATION September 1996
STANDARD Second Edition
Source: ETSI TC-RES Reference: RE/RES-03027-2
ICS: 33.060, 33.060.50
Key words: DECT, radio
Radio Equipment and Systems (RES);
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 2: Physical layer (PHL)
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 1996. All rights reserved.

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ETS 300 175-2: September 1996
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.

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Contents
Foreword .7
1 Scope .9
2 Normative references.9
3 Definitions and abbreviations .10
3.1 Definitions .10
3.2 Abbreviations .11
4 PHL services .12
4.1 RF channels (access in frequency) .12
4.1.1 Nominal position of RF carriers.12
4.1.2 Accuracy and stability of RF carriers.13
4.2 Time Division Multiple Access (TDMA) structure (access in time) .13
4.2.1 Frame, full-slot, double-slot, and half-slot structure .13
4.2.2 Reference timer accuracy and stability .14
4.2.3 RFP transmission jitter .14
4.2.4 PP reference timer synchronization .15
4.2.5 System synchronization.15
4.2.6 Inter-system synchronization.15
4.2.7 Reference timer adjustment for synchronization.15
4.3 Cells (access in space).16
4.4 Physical packets .16
4.4.1 The short physical packet P00 .16
4.4.2 The basic physical packet P32.17
4.4.3 The low capacity physical packet P08j.17
4.4.4 The high capacity physical packet P80 .18
4.5 Physical channels .18
4.5.1 Ra(K, L, M, N) notation.18
4.5.2 The short physical channel R00(K,L,M,N).19
4.5.3 The basic physical channel R32(K,L,M,N) .19
4.5.4 The low-rate physical channel R08j(K,L,M,N) .20
4.5.5 The high capacity physical channel R80(K,L,M,N).20
4.6 Synchronization field S.21
4.7 D-field.21
4.7.1 Physical packet P00 .21
4.7.2 Physical packet P32 .22
4.7.3 Physical packet P08j .22
4.7.4 Physical packet P80 .22
4.8 Z-field.22
4.9 Bit pattern during ramping.23
5 Transmission of physical packets .23
5.1 Definitions .23
5.1.1 End of the physical packet .23
5.1.2 Transmitted power.23
5.1.3 Normal Transmitted Power (NTP).23
5.2 Transmission burst .23
5.2.1 Transmitter attack time.23
5.2.2 Transmitter release time .24
5.2.3 Minimum power.24
5.2.4 Maximum power.24
5.2.5 Maintenance of transmission after packet end.24
5.2.6 Transmitter idle power output.24
5.3 Transmitted power .25
5.3.1 Peak power per transceiver.25

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ETS 300 175-2: September 1996
5.3.1.1 PP and RFP with an integral antenna . 25
5.3.1.2 PP and RFP with external connections for all antennas . 25
5.3.2 Maximum EIRP and number of transceivers. 25
5.4 RF carrier modulation.25
5.4.1 Modulation method . 25
5.4.2 Definition of "1" and "0". 25
5.4.3 Deviation limits. 25
5.5 Unwanted RF power radiation. 26
5.5.1 Emissions due to modulation. 26
5.5.2 Emissions due to transmitter transients. 27
5.5.3 Emissions due to intermodulation. 27
5.5.4 Spurious emissions when allocated a transmit channel . 27
6 Reception of physical packets . 28
6.1 Definitions and conditions for clause 6. 28
6.1.1 Power levels and field strength. 28
6.1.2 Test conditions. 28
6.1.3 Reference DECT radio end point. 28
6.2 Radio receiver sensitivity.28
6.3 Radio receiver reference bit error rate . 29
6.4 Radio receiver interference performance. 29
6.5 Radio receiver blocking. 29
6.5.1 Owing to signals occurring at the same time but on other frequencies. 29
6.5.2 Owing to signals occurring at a different time. 30
6.6 Receiver intermodulation performance . 30
6.7 Spurious emissions when not allocated a transmit channel. 30
6.7.1 Out of band. 30
6.7.2 In the DECT band. 30
7 Primitives between physical layer and other entities . 30
7.1 Medium access control layer (D-SAP) . 30
7.1.1 PL_TX {req} . 31
7.1.2 PL_RX {req,cfm}. 31
7.1.3 PL_FREQ_ADJ {req,}. 32
7.2 Management entity (PM-SAP). 32
7.2.1 PL_ME_SYNC {req,cfm}. 32
7.2.2 PL_ME_SIG_STR {req,cfm}. 33
7.2.3 PL_ME_TIME_ADJ {req,cfm}. 33
8 PHL procedures. 33
8.1 Addition of synchronization field and transmission. 33
8.2 Packet reception and removal of synchronization field . 33
8.3 Measurement of signal strength. 34
8.4 Synchronization pulse detection. 34
8.5 Timing adjustment. 34
8.6 Frequency adjustment. 34
9 Management entity procedures related to PHL . 34
9.1 List of quietest physical channels. 35
9.2 Physical channels with greatest field strength (PP only). 35
9.3 Extract timing . 35
Annex A (normative): Safety requirements. 36
A.1 Recommendation . 36
A.2 Safety distances . 36
Annex B (informative): Public Access Profile (PAP): mandatory requirements regarding the physical
layer . 37
B.1 Minimum Normal Transmit Power (NTP) . 37

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B.2 Radio receiver sensitivity.37
B.3 Z-field .37
B.4 Sliding collision detection .37
Annex C (normative): Synchronization Port.38
C.1 Synchronization Ports .38
C.1.1 External synchronization output port .38
C.1.2 External synchronization input port .38
C.2 Synchronization.39
C.2.1 External synchronization signal.40
C.2.2 Envelope synchronization.40
C.3 Interconnection cable.41
C.4 Propagation delay of synchronization signals.41
C.4.1 Calculation of Propagation delay (informative).41
C.4.2 Delay compensation.42
C.5 Synchronization by a GPS receiver. .42
C.5.1 DECT multiframe time synchronization using GPS.42
C.5.2 DECT multiframe-number synchronization using GPS .43
C.5.3 DECT PSCN synchronization using GPS.43
Annex D (normative): Prolonged preamble .44
D.1 Bit pattern .44
D.2 The power-time template .44
D.3 Procedures for implementing a prolonged preamble .44
D.4 Procedures for implementing a switched receiver antenna diversity algorithm relying on a
prolonged preamble .45
Annex E (informative): Bibliography.46
History.47

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Foreword
This second edition European Telecommunication Standard (ETS) has been produced by the Radio
Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards
Institute (ETSI).
This ETS forms part 2 of a series of 9 laying down the arrangements for the Digital Enhanced Cordless
Telecommunications (DECT) Common Interface (CI).
Part 1: "Overview".
Part 2 "Physical layer (PHL)".
Part 3 "Medium Access Control (MAC) layer".
Part 4 "Data Link Control (DLC) layer".
Part 5: "Network (NWK) layer".
Part 6: "Identities and addressing".
Part 7: "Security features".
Part 8: "Speech coding and transmission".
Part 9: "Public Access Profile (PAP)".
Annexes A, C and D to this ETS are normative. Annex B and E to this ETS are informative.
Further details of the DECT system may be found in ETR 015, ETR 043, and ETR 056.
Transposition dates
Date of adoption of this ETS: 6 September 1996
Date of latest announcement of this ETS (doa): 31 December 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 June 1997
Date of withdrawal of any conflicting National Standard (dow): 30 June 1997

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1 Scope
This second edition European Telecommunication Standard (ETS) gives an introduction and overview of
the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI).
This part of the DECT CI specifies the physical channel arrangements. DECT physical channels are radio
communication paths between two radio end points. A radio end point is either part of the fixed
infrastructure or a Portable Part (PP), typically a handset. The assignment of one or more particular
physical channels to a call is the task of higher layers.
The Physical Layer (PHL) interfaces with the Medium Access Control (MAC) layer, and with the Lower
Layer Management Entity (LLME). On the other side of the PHL is the radio transmission medium which
has to be shared extensively with other DECT users and a wide variety of other radio services. The tasks
of the PHL can be grouped into five categories:
a) to modulate and demodulate radio carriers with a bit stream of a defined rate to create a radio
frequency channel;
b) to acquire and maintain bit and slot synchronization between transmitters and receivers;
c) to transmit or receive a defined number of bits at a requested time and on a particular frequency;
d) to add and remove the synchronization field and the Z-field used for rear end collision detection;
e) to observe the radio environment to report signal strengths.
2 Normative references
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] ETS 300 175-1 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 1: Overview".
[2] ETS 300 175-3 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 3: Medium Access Control (MAC) layer".
[3] ETS 300 175-4 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 4: Data Link Control (DLC) layer".
[4] ETS 300 175-5 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 5: Network (NWK) layer".
[5] ETS 300 175-6 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 6: Identities and addressing".
[6] ETS 300 175-7 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 7: Security features".
[7] ETS 300 175-8 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 8: Speech coding and transmission".

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[8] ETS 300 175-9 (1996): "Radio Equipment and Systems (RES); Digital
Enhanced Cordless Telecommunications (DECT); Common Interface (CI);
Part 9: Public Access Profile (PAP)".
[9] ETS 300 444: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Generic Access Profile (GAP)”.
[10] I-ETS 300 176: "Radio Equipment and Systems (RES); Digital European
Cordless Telecommunications (DECT); Approval test specification".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS the following definitions apply:
antenna diversity: See ETS 300 175-1 [1].
cell: See ETS 300 175-1 [1].
Central Control Fixed Part (CCFP): See ETS 300 175-1 [1].
channel: See ETS 300 175-1 [1].
cluster: See ETS 300 175-1 [1].
Connection Oriented mode (C/O): See ETS 300 175-1 [1].
Cordless Radio Fixed Part (CRFP): See ETS 300 175-1 [1].
coverage area: See ETS 300 175-1 [1].
Dect Network (DNW): See ETS 300 175-1 [1].
double duplex bearer: See ETS 300 175-1 [1].
double simplex bearer: See ETS 300 175-1 [1].
double slot: One 12th of a TDMA frame which is used to support one high capacity physical channel.
down-link: See ETS 300 175-1 [1].
duplex bearer: See ETS 300 175-1 [1].
Fixed Part (DECT Fixed Part) (FP): See ETS 300 175-1 [1].
Fixed Radio Termination (FT): See ETS 300 175-1 [1].
frame: See ETS 300 175-1 [1].
full slot (slot): See ETS 300 175-1 [1].
guard space: See ETS 300 175-1 [1].
half slot: See ETS 300 175-1 [1].
handover: See ETS 300 175-1 [1].
intercell handover: See ETS 300 175-1 [1].
intracell handover: See ETS 300 175-1 [1].

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Lower Layer Management Entity (LLME): See ETS 300 175-1 [1].
multiframe: See ETS 300 175-1 [1].
physical channel (channel): See ETS 300 175-1 [1].
Portable Part (DECT Portable Part) (PP): See ETS 300 175-1 [1].
Portable radio Termination (PT): See ETS 300 175-1 [1].
public access service: See ETS 300 175-1 [1].
radio channel: No defined meaning. See RF channel or physical channel.
radio end point: See ETS 300 175-1 [1].
Radio Fixed Part (RFP): See ETS 300 175-1 [1].
Repeater Part (REP): See ETS 300 175-1 [1].
RF carrier (carrier): See ETS 300 175-1 [1].
RF channel: See ETS 300 175-1 [1].
simplex bearer: See ETS 300 175-1 [1].
Single Radio Fixed Part (SRFP): See ETS 300 175-1 [1].
TDMA frame: See ETS 300 175-1 [1].
Wireless Relay Station (WRS): See ETS 300 175-1 [1].
3.2 Abbreviations
For the purposes of this ETS the following abbreviations apply:
ACP Adjacent Channel Power
ACK Acknowledgement
CCFP Central Control Fixed Part
CI Common Interface (standard)
CRFP Cordless Radio Fixed Part
dBc dB relative to the peak power of an unmodulated carrier
dBm dB relative to 1 milliwatt
DECT Digital Enhanced Cordless Telecommunications
DLC Data Link Control layer
EIRP Effective Isotropic Radiated Power
ERP Effective Radiated Power
FP Fixed Part
FT Fixed radio Termination
GFSK Gaussian Frequency Shift Keying
GMSK Gaussian Minimum Shift Keying
LLME Lower Layer Management Entity
MAC Medium Access Control layer
PHL Physical Layer
PHS Portable HandSet
PP Portable Part
ppm parts per million
PT Portable radio Termination
REP Repeater Part
RF Radio Frequency
RFP Radio Fixed Part
RSSI Radio Signal Strength Indicator

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SAR Specific Absorbtion Rate
TDD Time Division Duplex
TDMA Time Division Multiple Access
WRS Wireless Relay Station
4 PHL services
A physical channel provides a simplex bit-pipe between two radio end points. To establish, for example, a
duplex telephone connection, two physical channels have to be established between the endpoints.
Radio spectrum is needed to create a physical channel. The radio spectrum space has three dimensions:
- geometric (geographic) space;
- frequency; and
- time.
Spectrum is assigned to physical channels by sharing it in these three dimensions.
DECT provides a mechanism called "handover", to release a physical channel and to establish another
one in any or all of the three dimensions without releasing the end to end connection.
The requirements of this part should be read in conjunction with I-ETS 300 176 [10].
The requirements specified apply for nominal conditions unless extreme conditions are stated. Tests at
extreme conditions may include combinations of limit values of extreme temperature and of power supply
variation, defined for each case in I-ETS 300 176 [10].
Nominal and extreme temperature ranges are defined below:
- Nominal temperature: PP, FP, RFP, CCFP + 15 °C to + 35 °C
- Extreme temperature: PP   0 °C to + 40 °C
FP, RFP, CCFP, class E1 + 10 °C to + 40 °C
FP, RFP, CCFP, class E2 - 10 °C to + 55 °C
The environmental class E1 refers to installation in indoor heated and/or cooled areas allowing for
personal comfort, e.g. homes, offices, laboratories or workshops. The environmental class E2 refers to all
other installations.
For nominal temperature, each measurement is made at the temperature of the test site, which shall be
within + 15 °C to + 35 °C. For extreme temperatures, additional measurements are made, at each limit
value of the extreme temperature.
4.1 RF channels (access in frequency)
4.1.1 Nominal position of RF carriers
Ten RF carriers shall be placed into the frequency band 1 880-1 900 MHz with centre frequencies F
C
given by:
Fc = F0 - c x 1,728 MHz
where: F0 = 1897.344 MHz; and
c = 0,1, ., 9.
Above this band, additional carriers are defined with centre frequencies Fc given by:
Fc = F9 + c x 1,728 MHz
and c ≥ 10 and RF band = 00001 (See ETS 300 175-3 [2], subclause 7.2.3.3.1).

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The frequency band between Fc - 1,728/2 MHz and Fc + 1,728/2 MHz shall be designated RF channel c.
NOTE: A nominal DECT RF carrier is one whose centre frequency is generated by the
formula:
Fg = F0 - g x 1,728 MHz ,
where g is any integer.
All DECT equipment shall be capable of working on all 10 RF channels, c= 0,1, ., 9.
4.1.2 Accuracy and stability of RF carriers
At an RFP the transmitted RF carrier frequency corresponding to RF channel c shall be in the range
Fc ± 50 kHz at extreme conditions.
At a PP the centre frequency accuracy shall be within ± 50 kHz at extreme conditions either relative to an
absolute frequency reference or relative to the received carrier, except that during the first 1 s after the
transition from the idle-locked state to the active-locked state the centre frequency accuracy shall be
within ± 100 kHz at extreme conditions relative to the received carrier.
NOTE: The above state transition is defined in ETS 300 175-3 [2].
The maximum rate of change of the centre frequency at both the RFP and the PP while transmitting, shall
not exceed 15 kHz per slot.
4.2 Time Divisio
...