SIST EN 300 175-2 V2.8.1:2020
(Main)The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). The present document 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, a privately owned Fixed Part (FP), typically a base station, 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.
The present document includes New Generation DECT, a further development of the DECT standard introducing wideband speech, improved data services, new slot types and other technical enhancements.
Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 2. del: Fizična plast (PHL)
Ta dokument je eden od delov specifikacije skupnega vmesnika (CI) za digitalne izboljšane brezvrvične telekomunikacije (DECT). Dokument določa ureditve fizičnega kanala. Fizični kanali digitalnih izboljšanih brezvrvičnih telekomunikacij so poti radijske komunikacije med dvema radijskima končnima točkama. Radijska končna točka je del fiksne strukture, tj. fiksni del (FP) v zasebni lasti – običajno bazna postaja, ali prenosni del (PP) – običajno slušalka. Dodelitev enega ali več določenih fizičnih kanalov klicu je opravilo, ki ga izvajajo višje plasti. Fizična plast (PHL) je povezana s plastjo krmiljenja dostopa do prenosnega medija (MAC) in entiteto upravljanja nižjih plasti (LLME). Na drugi strani fizične plasti je medij za radijski prenos, ki je namenjen obsežni skupni uporabi več uporabnikov digitalnih izboljšanih brezvrvičnih telekomunikacij in različnim radijskim storitvam. Opravila fizične plasti je mogoče združiti v pet kategorij:
a) modulacija in demodulacija radijskih nosilcev z bitnim pretokom določene stopnje za ustvarjanje radiofrekvenčnega kanala;
b) pridobivanje ter vzdrževanje bitne in režne sinhronizacije med oddajniki ter prejemniki;
c) oddajanje ali prejemanje določenega števila bitov ob zahtevanem času in na določeni frekvenci;
d) dodajanje in odstranjevanje polja sinhronizacije ter polja Z, ki se uporablja za zaznavanje trka v zadnji del vozila;
e) opazovanje radijskega okolja za sporočanje moči signala.
Ta dokument vključuje novo generacijo digitalnih izboljšanih brezvrvičnih telekomunikacij, nadaljnji razvoj standarda za digitalne izboljšane brezvrvične telekomunikacije, ki uvaja širokopasovni govor, izpopolnjene podatkovne storitve, nove tipe rež in druge tehnične izpopolnitve.
General Information
Standards Content (sample)
SLOVENSKI STANDARD
SIST EN 300 175-2 V2.8.1:2020
01-februar-2020
Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 2.
del: Fizična plast (PHL)Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part
2: Physical Layer (PHL)Ta slovenski standard je istoveten z: ETSI EN 300 175-2 V2.8.1 (2019-12)
ICS:
33.070.30 Digitalne izboljšane Digital Enhanced Cordless
brezvrvične telekomunikacije Telecommunications (DECT)
(DECT)
35.100.10 Fizični sloj Physical layer
SIST EN 300 175-2 V2.8.1:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 300 175-2 V2.8.1:2020
ETSI EN 300 175-2 V2.8.1 (2019-12)
EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 2: Physical Layer (PHL)
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SIST EN 300 175-2 V2.8.1:2020
2 ETSI EN 300 175-2 V2.8.1 (2019-12)
Reference
REN/DECT-00322
Keywords
DECT, IMT-2000, mobility, radio, TDD, TDMA
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3 ETSI EN 300 175-2 V2.8.1 (2019-12)
Contents
Intellectual Property Rights ................................................................................................................................ 7
Foreword ............................................................................................................................................................. 7
Modal verbs terminology .................................................................................................................................... 7
1 Scope ........................................................................................................................................................ 8
2 References ................................................................................................................................................ 8
2.1 Normative references ......................................................................................................................................... 8
2.2 Informative references ........................................................................................................................................ 9
3 Definition of terms, symbols and abbreviations ..................................................................................... 10
3.1 Terms ................................................................................................................................................................ 10
3.2 Symbols ............................................................................................................................................................ 11
3.3 Abbreviations ................................................................................................................................................... 11
4 PHL services .......................................................................................................................................... 12
4.0 General ............................................................................................................................................................. 12
4.1 RF channels (access in frequency) ................................................................................................................... 13
4.1.1 Nominal position of RF carriers ................................................................................................................. 13
4.1.2 Accuracy and stability of RF carriers ......................................................................................................... 14
4.2 Time Division Multiple Access (TDMA) structure (access in time) ................................................................ 14
4.2.1 Frame, full-slot, double-slot, half-slot and variable capacity slot structure (including long slot) ............... 14
4.2.2 Reference timer accuracy and stability ....................................................................................................... 16
4.2.3 RFP transmission jitter................................................................................................................................ 16
4.2.4 PP reference timer synchronization ............................................................................................................ 16
4.2.5 System synchronization .............................................................................................................................. 17
4.2.6 Inter-system synchronization ...................................................................................................................... 17
4.2.7 Reference timer adjustment for synchronization ........................................................................................ 17
4.3 Cells (access in space) ...................................................................................................................................... 17
4.4 Physical packets ............................................................................................................................................... 17
4.4.0 General ........................................................................................................................................................ 17
4.4.1 The short physical packet P00 .................................................................................................................... 18
4.4.2 The basic physical packet P32 .................................................................................................................... 18
4.4.3 The variable capacity physical packet P00j ................................................................................................ 18
4.4.4 The high capacity physical packet P80 ....................................................................................................... 19
4.5 Physical channels ............................................................................................................................................. 19
4.5.0 General ........................................................................................................................................................ 19
4.5.1 Ra (K, L, M, N) notation ............................................................................................................................ 20
4.5.2 The short physical channel R00 (K, L, M, N) ............................................................................................. 20
4.5.3 The basic physical channel R32 (K, L, M, N) ............................................................................................ 21
4.5.4 The variable-rate physical channel R00j (K, L, M, N) ............................................................................... 21
4.5.5 The high capacity physical channel R80 (K, L, M, N) ............................................................................... 22
4.6 Synchronization field S .................................................................................................................................... 23
4.7 D-field .............................................................................................................................................................. 23
4.7.1 Physical packet P00 .................................................................................................................................... 23
4.7.2 Physical packet P32 .................................................................................................................................... 23
4.7.3 Physical packet P00j ................................................................................................................................... 24
4.7.4 Physical packet P80 .................................................................................................................................... 24
4.8 Z-field ............................................................................................................................................................... 24
4.9 Bit pattern during ramping ............................................................................................................................... 25
5 Transmission of physical packets ........................................................................................................... 25
5.1 Definitions ........................................................................................................................................................ 25
5.1.1 End of the physical packet .......................................................................................................................... 25
5.1.2 Transmitted power ...................................................................................................................................... 25
5.1.3 Normal Transmitted Power (NTP) .............................................................................................................. 25
5.2 Transmission burst ........................................................................................................................................... 25
5.2.0 General ........................................................................................................................................................ 25
5.2.1 Transmitter attack time ............................................................................................................................... 25
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5.2.2 Transmitter release time .............................................................................................................................. 25
5.2.3 Minimum power ......................................................................................................................................... 26
5.2.4 Maximum power ......................................................................................................................................... 26
5.2.5 Maintenance of transmission after packet end ............................................................................................ 26
5.2.6 Transmitter idle power output ..................................................................................................................... 26
5.3 Transmitted power ............................................................................................................................................ 26
5.3.1 Peak power per transceiver ......................................................................................................................... 26
5.3.1.1 PP and RFP with an integral antenna .................................................................................................... 26
5.3.1.2 PP and RFP with external connections for all antennas ........................................................................ 27
5.3.2 Maximum EIRP and number of transceivers .............................................................................................. 27
5.4 RF carrier modulation ...................................................................................................................................... 27
5.4.1 Modulation method ..................................................................................................................................... 27
5.4.2 Definition of "1" and "0" ............................................................................................................................ 27
5.4.3 Deviation limits .......................................................................................................................................... 27
5.5 Unwanted RF power radiation .......................................................................................................................... 28
5.5.1 Emissions due to modulation ...................................................................................................................... 28
5.5.2 Emissions due to transmitter transients ....................................................................................................... 28
5.5.3 Emissions due to intermodulation ............................................................................................................... 28
5.5.4 Spurious emissions when allocated a transmit channel .............................................................................. 28
6 Reception of physical packets ................................................................................................................ 29
6.1 Definitions and conditions for clause 6 ............................................................................................................ 29
6.1.1 Power levels and field strength ................................................................................................................... 29
6.1.2 Test conditions ............................................................................................................................................ 29
6.1.3 Reference DECT radio end point ................................................................................................................ 30
6.2 Radio receiver sensitivity ................................................................................................................................. 30
6.3 Radio receiver reference bit error rate and frame error ratio ............................................................................ 30
6.4 Radio receiver interference performance.......................................................................................................... 30
6.5 Radio receiver blocking .................................................................................................................................... 31
6.5.1 Owing to signals occurring at the same time but on other frequencies ....................................................... 31
6.5.2 Owing to signals occurring at a different time ............................................................................................ 31
6.6 Receiver intermodulation performance ............................................................................................................ 31
6.7 Spurious emissions when not allocated a transmit channel .............................................................................. 32
6.7.1 Out of band ................................................................................................................................................. 32
6.7.2 In the DECT band ....................................................................................................................................... 32
7 Primitives between physical layer and other entities ............................................................................. 32
7.0 General ............................................................................................................................................................. 32
7.1 Medium access control layer (D-SAP) ............................................................................................................. 32
7.1.0 D-SAP general ............................................................................................................................................ 32
7.1.1 PL_TX {req} .............................................................................................................................................. 33
7.1.2 PL_RX {req, cfm} ...................................................................................................................................... 33
7.1.3 PL_FREQ_ADJ {req} ................................................................................................................................ 33
7.2 Management entity (PM-SAP) ......................................................................................................................... 33
7.2.0 PM-SAP general ......................................................................................................................................... 33
7.2.1 PL_ME_SYNC {req, cfm} ......................................................................................................................... 34
7.2.2 PL_ME_SIG_STR {req, cfm} .................................................................................................................... 34
7.2.3 PL_ME_TIME_ADJ {req, cfm} ................................................................................................................. 34
8 PHL procedures ...................................................................................................................................... 34
8.1 Addition of synchronization field and transmission ......................................................................................... 34
8.2 Packet reception and removal of synchronization field .................................................................................... 34
8.3 Measurement of signal strength ........................................................................................................................ 35
8.4 Synchronization pulse detection ....................................................................................................................... 35
8.5 Timing adjustment ............................................................................................................................................ 35
8.6 Frequency adjustment ....................................................................................................................................... 35
9 Management entity procedures related to PHL ...................................................................................... 36
9.1 List of quietest physical channels ..................................................................................................................... 36
9.2 Physical channels with greatest field strength (PP only) .................................................................................. 36
9.3 Extract timing ................................................................................................................................................... 36
Annex A (informative): RF exposure requirements ............................................................................ 37
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A.0 General ................................................................................................................................................... 37
A.1 Recommendation .................................................................................................................................... 37
A.2 Compliance distances ............................................................................................................................. 37
Annex B (normative): Synchronization port ..................................................................................... 39
B.1 General requirements ............................................................................................................................. 39
B.2 Wired synchronization ports .................................................................................................................. 39
B.2.0 Wired synchronization general ......................................................................................................................... 39
B.2.1 Synchronization signal ..................................................................................................................................... 40
B.3 GPS synchronization .............................................................................................................................. 41
B.3.0 GPS synchronization general ........................................................................................................................... 41
B.3.1 Synchronization signal ..................................................................................................................................... 42
B.3.2 DECT timings derivation from the GPS time................................................................................................... 42
B.3.2.0 Timings derivation general ......................................................................................................................... 42
B.3.2.1 DECT multiframe number synchronization using GPS .............................................................................. 43
B.3.2.2 DECT PSCN synchronization using GPS ................................................................................................... 43
B.4 Guidance for installation ........................................................................................................................ 44
B.4.1 Interconnection cable ....................................................................................................................................... 44
B.4.2 Propagation delay of synchronization signals .................................................................................................. 44
B.4.2.1 Calculation of Propagation delay (informative) .......................................................................................... 44
B.4.2.2 Delay compensation .................................................................................................................................... 45
B.4.3 GPS receiver stability ....................................................................................................................................... 45
Annex C (informative): Prolonged preamble ....................................................................................... 46
C.0 General ................................................................................................................................................... 46
C.1 Bit pattern ............................................................................................................................................... 46
C.2 The power-time template........................................................................................................................ 46
Annex D (normative): 4-level/8-level/16-level/64-level modulation option ..................................... 47
D.0 General ................................................................................................................................................... 47
D.1 The π/2-DBPSK modulation scheme ..................................................................................................... 48
D.1.1 RF carrier modulation ...................................................................................................................................... 48
D.1.1.0 Filter and phase change ............................................................................................................................... 48
D.1.1.1 Modulation accuracy................................................................................................................................... 49
D.1.2 Transmission of physical packets ..................................................................................................................... 49
D.2 The π/4-DQPSK modulation scheme ..................................................................................................... 49
D.2.1 RF carrier modulation ...................................................................................................................................... 49
D.2.1.0 Filter and phase change ............................................................................................................................... 49
D.2.1.1 Modulation accuracy................................................................................................................................... 49
D.2.2 Transmission of physical packets ..................................................................................................................... 49
D.3 The π/8-D8PSK modulation scheme ...................................................................................................... 50
D.3.1 RF carrier modulation ...................................................................................................................................... 50
D.3.1.0 Filter and phase change ............................................................................................................................... 50
D.3.1.1 Modulation accuracy................................................................................................................................... 50
D.3.2 Transmission of physical packets ..................................................................................................................... 50
D.4 The 16 QAM modulation scheme .......................................................................................................... 50
D.4.1 RF carrier modulation ...................................................................................................................................... 50
D.4.1.0 Filter and constellation symbols ................................................................................................................. 50
D.4.1.1 Modulation accuracy................................................................................................................................... 51
D.4.2 Transmission of physical packets ..................................................................................................................... 51
D.5 The 64 QAM modulation scheme .......................................................................................................... 51
D.5.1 RF carrier modulation ...................................................................................................................................... 51
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D.5.1.0 Filter and constellation symbols ................................................................................................................. 51
D.5.1.1 Modulation accuracy................................................................................................................................... 52
D.5.2 Transmission of physical packets ..................................................................................................................... 53
D.6 Transmission of physical packets ........................................................................................................... 53
D.6.1 Error vector magnitude definition .................................................................................................................... 53
D.6...
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