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WO1998011739A2 - Procede de commande de liaisons d'appels d'urgence avec des systemes de telecommunication sans cordon, en particulier des systemes dect/gap - Google Patents

Procede de commande de liaisons d'appels d'urgence avec des systemes de telecommunication sans cordon, en particulier des systemes dect/gap Download PDF

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Publication number
WO1998011739A2
WO1998011739A2 PCT/DE1997/001962 DE9701962W WO9811739A2 WO 1998011739 A2 WO1998011739 A2 WO 1998011739A2 DE 9701962 W DE9701962 W DE 9701962W WO 9811739 A2 WO9811739 A2 WO 9811739A2
Authority
WO
WIPO (PCT)
Prior art keywords
base station
emergency call
cordless
emergency
telecommunication
Prior art date
Application number
PCT/DE1997/001962
Other languages
German (de)
English (en)
Other versions
WO1998011739A3 (fr
Inventor
Rolf Biedermann
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to AU44504/97A priority Critical patent/AU4450497A/en
Publication of WO1998011739A2 publication Critical patent/WO1998011739A2/fr
Publication of WO1998011739A3 publication Critical patent/WO1998011739A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/08—Details of telephonic subscriber devices home cordless telephone systems using the DECT standard

Definitions

  • transmitters and receivers are used for message processing and transmission, in which 1) the message processing and message transmission in a preferred transmission direction (simplex operation) or in both transmission directions (duplex operation) ) can take place, 2) the message processing is analog or digital, 3) the message transmission over the long distance transmission wirelessly on the basis of various message transmission methods FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access) and / or CDMA (code Multiple Access Division) - e.g. according to radio standards such as DECT, GSM, WACS or PACS, IS-54, PHS, PDC etc. [cf. IEEE Communications Magazine, January 1995, pages 50 to 57; D.D. Falconer et al: "Time Division Multiple Access Methods for Wireless Personal Communications"] and / or wired.
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • CDMA code Multiple Access Division
  • Message is a superordinate term that stands for both the meaning (information) and the physical representation (signal). Despite the same meaning of a message - that is, the same information - different signal forms can occur. For example, a message related to an item
  • the type of transmission according to (1) ... (3) is usually characterized by continuous (analog) signals, while the type of transmission according to (4) usually produces discontinuous signals (e.g. pulses, digital signals).
  • the invention relates to a method for controlling emergency call connections in cordless telecommunication systems, in particular DECT / GAP systems according to the preamble of claim 1.
  • Cordless telecommunication systems of the type defined above are, for example, DECT systems [Digital Enhanced (formerly: European) Cordless Telecommunication; see. (1): Communications Engineering Electronics 42 (1992) Jan./Feb. No. 1, Berlin, DE; U. Pilger "Structure of the DECT standard", pages 23 to 29 in connection with the ETSI publication ETS 300175-1 ... 9, October 1992; (2): Telco Report 16 (1993), No. 1, JH Koch: "Digital convenience for cordless telecommunications - DECT standard opens up new areas of use", pages 26 and 27; (3): tec 2/93 - Asco's technical magazine “Ways to universal mobile telecommunications", pages 35 to 42; (4): Philips Telecommunication Review, Vol. 49, No. 3, Sept.
  • the GAP standard is a subset of the DECT standard which has the task of ensuring the interoperability of the DECT air interface, in particular for public telecommunications applications.
  • DECT / GAP systems are mentioned in the following, this means private and / or public systems.
  • a maximum of 12 connections according to TDMA / FDMA can be established at a DECT / GAP base station BS via a DECT / GAP air interface designed for the frequency range between 1.88 and 1.90 GHz / TDD procedure (Time Division Multiple Access / Frequency Division Multiple Access / Time Division Duplex) can be set up parallel to DECT / GAP handsets MT1 ... MT12.
  • the connections can be internal and / or external.
  • two mobile parts registered at the base station BS can communicate with one another.
  • the base station BS is equipped with a telecommunications network TKN, for example in line-bound form via a telecommunication connection unit TAE or a private branch exchange NStA with a line-bound telecommunication network or in accordance with WO 95/05040 in wireless form as a repeater station with a superordinate telecommunication network , connected.
  • TKN telecommunications network
  • the base station BS has - as in the case of the Gigaset 951 (Siemens cordless telephone, see telcom Report 16, (1993) Issue 1, pages 26 and 27) - only one connection to the telecommunication connection unit TAE or the private branch exchange NStA, only one can external connection can be established.
  • the base station BS has two connections to the telecommunications network TKN, as in the case of the Gigaset 952 (Siemens cordless telephone; see telcom Report 16, (1993), number 1, pages 26 and 27), then in addition to the external connection to the Mobile part MTl a further external connection possible from a line-bound telecommunication terminal TKE connected to the base station BS.
  • a second handset for example the MT12 handset, uses the second connection for an external connection instead of the telecommunications terminal TKE.
  • the base station BS which is designed as a cordless small switching system, is connected to a voltage network SPN via a network connection device NAG.
  • FIGURE 2 shows, starting from the publication Components 31 (1993), issue 6, pages 215 to 218; S. Althammer, D. Brückmann: "Highly optimized ICs for DECT cordless phones" the basic circuit structure of the base station BS and the handset MT.
  • the base station BS and the mobile part MT then have a radio part FKT with an antenna ANT assigned for transmitting and receiving radio signals, a signal processing device SVE and a central control ZST, which are connected to one another in the manner shown.
  • the radio part FKT essentially contains the known devices such as transmitter SE, receiver EM and synthesizer SYN.
  • a coding / decoding device CODEC is included in the signal processing device SVE.
  • the central control ZST has a microprocessor ⁇ p for the base station BS as well as for the mobile part MT with an OSI / ISO layer model [cf. (1): Struktursability - Irish Mathematics, Jg. 48, 2/1995, pages 102 to 111; (2): ETSI publication ETS 300175-1 ... 9, October 1992] built program module PGM, a signal control part SST and a digital signal processor DSP, which are interconnected in the manner shown. Of the layers defined in the layer model, only the first four layers that are essential for the base station BS and the mobile part MT are shown.
  • the signal control ball SST is bilteil in the Ba sisstati 'on BS as a time switch controller TSC and Mo in the MT as a burst mode controller BMC formed.
  • the main difference between the two signal control parts TSC, BMC is that the base station-specific see signal control part TSC, in addition to the handset-specific signal control part BMC, also performs switching functions (switch functions).
  • FIGURE 2 The circuit structure described in FIGURE 2 is supplemented by additional functional units in the base station BS and the mobile part MT in accordance with their function in the DECT / GAP system in FIGURE 1.
  • the base station BS is connected to the telecommunications network TKN via the signal processing device SVE and the telecommunications connection unit TAE or the private branch exchange NStA.
  • the base station BS can also have a user interface (functional units shown in dashed lines in FIGURE 2), which, for example, consists of an input device EE in the form of a keyboard, a display device AE in the form of a display, a speech / hearing device SHE in the form of a handset with a microphone MIF and a hearing capsule HK and a ringing bell TRK.
  • the mobile part MT has the user interface which is possible as an option with the base station BS, with the control elements described above belonging to this user interface.
  • FIGURE 3 shows, starting from the DECT system according to FIGURE 1, a cellular DECT / GAP multisystem CMI (Cordless Multicell Integration), in which several of the DECT / GAP systems TKS described above, each with a base station BS and one / several mobile parts MT to any geographical location, for example in an administration building with large floor offices, concentrated - in the sense of a "hot spo" arrangement - instead of a "closed” geographical see place, like the administration building, but is also an "open” geographical place with strategic telecommunication meaning, for example places in big cities with a high traffic volume, a large accumulation of commercial units and a large movement of people, for the installation of a cellular DECT / GAP multisystems CMI possible ..
  • CMI Cordless Multicell Integration
  • some of the base stations BS arranged in the open-plan office are designed as antenna diversity base stations in accordance with WO 94/10764.
  • the concentration of the DECT / GAP Systems TKS is so distinctive (complete coverage of the geographical location) that individual DECT / GAP systems TKS work in the same environment due to the overlapping cellular DECT / GAP radio areas FB.
  • the same environment can mean that a) a first base station BS1 of a first telecommunication system TKS1 in a first radio area FBI and a second base station BS2 of a second telecommunication system TKS2 are arranged in a second radio area FB2 and telecommunication connections to at least one handset MT ⁇ , 2 , b) a third base station BS3 of a third telecommunication system TKS3 and a fourth base station BS4 of a fourth telecommunication system TKS4 are arranged in a common third radio area FB3 and can set up telecommunication connections to at least one handset MT 3 , 4 .
  • FIGURE 4 shows, starting from FIGURES 1 to 3 and based on the publication “Message Technology Electronics 42 (1992) Jan./Feb., No. 1, Berlin, DE; U. Pilger: "Structure of the DECT standard", pages 23 to 29 in connection with ETS 300 175-1 ... 9, October 1992 "the TDMA structure of the DECT / GAP
  • the DECT / GAP system is a hybrid system with regard to multiple access methods, in which according to the FDMA Principle on ten frequencies in the frequency band between 1.88 and 1.90 GHz radio messages according to the TDMA principle according to FIGURE 4 in a predetermined time sequence from the base station BS to the mobile part MT and from the mobile part MT to the base station BS (time division duplex operation) can be sent.
  • the time sequence is a Mul ; ti time frame MZR determined, which occurs every 160 ms and which has 16 time frames ZR, each with a duration of 10 ms.
  • time frame ZR information relating to a C, M, N, P, Q channel defined in the DECT standard is transmitted separately to base station BS and mobile unit MT. If information for several of these channels is transmitted in a time frame ZR, the transmission takes place according to a priority list with M>C> N and P> N.
  • Each of the 16 time frames ZR of the multi-time frame MZR is in turn divided into 24
  • Time slots ZS each with a duration of 417 ⁇ s, of which 12 time slots ZS (time slots 0 ... 11) for the transmission direction "base station BS ⁇ mobile part MT" and a further 12 time slots ZS (time slots 12 ... 23) for the transmission direction " Handset MT ⁇ base station BS "are determined.
  • Information with a bit length of 480 bits is transmitted in each of these time slots ZS according to the DECT standard. Of these 480 bits, 32 bits are transmitted as synchronization information in a SYNC field and 388 bits as useful information in a D field. The remaining 60 bits are transmitted as additional information in a Z field and as protective information in a “guard time” field.
  • the 388 bits of the D field transmitted as useful information are in turn divided into a 64 bit long A field, a 320 bit long B field and a 4 bit long "X-CRC" word.
  • the 64-bit A field consists of an 8-bit data header, a 40-bit data record with data for the C, Q, M, N, P channels and a 16-bit "A -CRC "word together.
  • the base station BS (Radio Fixed Part RFP) according to FIGURES 1 to 4 sends broadcast information via the DECT air interface at regular intervals on simplex transmission paths, the so-called dummy bearer, which is transmitted by the mobile part MT (Radio Portable Part RPP) are received according to FIGURES 1 to 4 and serve this for the synchronization and the establishment of a connection with the base station.
  • the broadcast information does not necessarily have to be sent on a dummy transmission path (dummy bearer).
  • the base station already maintains at least one telecommunication connection, a so-called traffic transmission path (traffic bearer), to another handset and on which it then sends the necessary broadcaster information .
  • the handset that wants to have a telecommunication connection to the base station can receive the broadcast information, as when transmitting the broadcast information on the dummy transmission path.
  • the broadcast information contains information about access rights, system information and paging information.
  • the system information also contains additional information that informs the handset whether the base station is a base station via which emergency calls can be made (matter publicly discussed in the ETSI-RES03R committee and ETSI-RES03N committee in the first half of 1996).
  • the handset has received this additional information and the relevant handset also has access rights to the base station sending the additional information (for example if the handset is registered and registered with the base station in accordance with WO 94/10785 - patent claims in connection with the description of FIG. 4) is carried out according to a special user interface procedure (eg dialing the emergency number 112, pressing an emergency call button, selecting menu information "EMERGENCY CALL” etc.) on the handset in accordance with the GAP standard (cf. ETSI publication prETS 300444, April 1995) based on a setup procedure (SETUP procedure) for normal (ordinary) outgoing telecommunication connections via a direct call connection [cf. ETSI publication prETS 300444, April 1995, chapter 8.10 (“CC_INFO ⁇ MULTI KEYPAD >>)] a preconfigured emergency number is automatically dialed and an emergency call connection is made Emergency service parts manufactured.
  • a special user interface procedure eg dialing the emergency number 112, pressing an emergency call button, selecting menu information "EMERGENCY
  • the procedure described above for transmitting emergency calls in a DECT / GAP system may be sufficient for private systems in which it can be assumed that the handsets have access authorization to base stations, but for public systems in which the access authorization may only be is still given in individual cases, the specified procedure is insufficient.
  • the procedure described above for transmitting emergency calls in a DECT / GAP system does not always ensure that the handsets with access authorization to a base station can always make emergency calls.
  • the base station in question no longer has free channels due to limited channel resources or other (abnormal) paint) must reject a request or a request to make an emergency call (cf. see ETSI publication prETS 300444, April 1995, chap. 8.2.2.3 or chap. 8.8).
  • the handset in question can then search for other base stations via which emergency calls can still be made, but there is no guarantee that this search will be successful.
  • the object on which the invention is based is to control the clearing down of emergency call connections in cordless telecommunication systems, in particular DECT / GAP systems.
  • FIG. 5 shows an emergency call transmission procedure based on an incentive state diagram, which ensures efficient and reliable placing of emergency calls in DECT / GAP systems according to FIGS. 1 to 4.
  • the mobile part MT (portable part) starts the procedure shown with the base station BS (fixed part), it should either - as already mentioned at the beginning - have access authorization to this base station BS or, if this is missing, be precautionary to put it down have at least temporarily synchronized emergency calls to the base stations BS for telecommunications limited to making emergency calls. Due to this premature synchronization, the setup time of an emergency call is significantly reduced in an emergency.
  • the synchronization to a base station is made possible by the fact that the base station transmits the additional information mentioned at the beginning within the framework of the broadcast information sent.
  • the handset When searching for a base station to which the handset has no access authorization, it is advantageous if the handset is first searched for public base stations because these are more likely to send the additional information to private base stations and only after an unsuccessful search for private ones Base stations searches.
  • a criterion for distinguishing between a public base station and a private base station there is the identifier ARC (ACCESS RIGHTS CLASS) which is used only by the public base stations and which is transmitted much more frequently than the additional information. If the mobile part MT has found a base station BS according to the above criteria, then, as already mentioned, an emergency call is initiated on the mobile part MT if necessary by a manual user interface procedure.
  • the mobile part MT then transmits a first MAC message “BEARER_REQUEST” to the base station BS as part of a connection setup procedure (bearer setup procedure; see ETSI publication ETS 300175-3, October 1992, section 10.5.1.1) (see ETSI publication ETS 300175-3, October 1992, chap.
  • the base station BS can distinguish between an emergency call and a normal call request from the mobile unit.
  • the base station BS sends a second MAC message "BEARER_CONFIRM" (cf. ETSI publication ETS 300175-3, October 1992, chapter 7.3.3.3) to the mobile part MT.
  • the base station BS (the MAC protocol layer) has recognized an emergency call, then higher protocol layers and the protocol layer control (Lower Layer Management Entity LLME) are instructed to set up a free telecommunication channel.
  • the device can look such that either - if all the telecommunication channels available in the base station BS are occupied - a free channel is created by opening an existing telecommunication connection or a free channel is reserved from the start. If in the present case there is talk of a telecommunication channel, this means both the network-side voice and data channels as well as the radio channels or time slots.
  • the mobile part MT transmits a first NWK message “CC-SETUP” (cf. ETSI publication ETS 300175-5, October 1992, chapter 6.3.2.1)
  • the base station BS should accept this NWK message from the mobile part MT without checking the “FIXED_IDENTITY” and the “PORTABLE_IDENTITY” and with the NWK protocol layer procedure in accordance with the GAP standard (cf. ETSI publication prETS 300444, April 1995, chap 8.2) Continue without checking NWK protocol layer identifiers.
  • the base station BS After the emergency call is recognized in accordance with the GAP standard, the base station BS establishes the emergency call connection to the emergency call center and transmits a second NWK message "CC-CONNECT" (cf. ETSI publication ETS 300175-5, October 1992, chap. 6.3.2.6) to the mobile part MT.
  • the emergency call connection is preferably established automatically by a public base station and preferably by a private base station by automatically dialing an emergency number.
  • the actual emergency call message can now be entered directly or indirectly on the mobile part MT.
  • This emergency call message arrives at the emergency service center via the base station BS. Furthermore, it is advantageous that if the emergency call connection exists and the emergency call message has been transmitted, the existing emergency call connection is cleared down again by the base station. This makes it possible that in an emergency, such as an accident, the emergency call connection cannot be broken down due to unintended user interface procedures on the handset.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Alarm Systems (AREA)

Abstract

Afin de commander, dans des systèmes de télécommunication sans cordon, en particulier des systèmes DECT/GAP, la libération de liaisons d'appels d'urgence, la liaison d'appels d'urgence est libérée par la station de base sans cordon.
PCT/DE1997/001962 1996-09-11 1997-09-05 Procede de commande de liaisons d'appels d'urgence avec des systemes de telecommunication sans cordon, en particulier des systemes dect/gap WO1998011739A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44504/97A AU4450497A (en) 1996-09-11 1997-09-05 Process for controlling emergency call connections in cordless telecommunication systems, in particular dect/gap systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638112A DE19638112C2 (de) 1996-09-11 1996-09-11 Verfahren zum Steuern von Notrufverbindungen in Schnurlos-Telekommunikationssystemen, insbesondere DECT/GAP-Systemen
DE19638112.6 1996-09-11

Publications (2)

Publication Number Publication Date
WO1998011739A2 true WO1998011739A2 (fr) 1998-03-19
WO1998011739A3 WO1998011739A3 (fr) 1998-06-18

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PCT/DE1997/001962 WO1998011739A2 (fr) 1996-09-11 1997-09-05 Procede de commande de liaisons d'appels d'urgence avec des systemes de telecommunication sans cordon, en particulier des systemes dect/gap

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AR (1) AR009751A1 (fr)
AU (1) AU4450497A (fr)
DE (1) DE19638112C2 (fr)
WO (1) WO1998011739A2 (fr)
ZA (1) ZA978182B (fr)

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JP4545436B2 (ja) 2001-04-27 2010-09-15 ノキア コーポレイション ネットワーク識別される非常セッションを取り扱う方法及びシステム

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324517A1 (de) * 1983-07-07 1985-01-17 ANT Nachrichtentechnik GmbH, 7150 Backnang Notrufsystem
CA1299706C (fr) * 1987-08-27 1992-04-28 Yasutaka Sasaki Systeme concentrateur pouvant etablir une communication d'urgence en cas d'encombrement des voies de communication
DE4130647A1 (de) * 1991-09-14 1993-03-18 Bosch Gmbh Robert Notrufeinrichtung
AU3743993A (en) * 1992-04-09 1993-11-18 Siemens Aktiengesellschaft Method of structuring a B-field format in a DECT-standard system
DK0666002T3 (da) * 1992-10-26 1996-08-26 Siemens Ag Fremgangsmåde og indretning til antenneudvælgelses-diversitet i en modtager til et trådløst telefonapparat
DE4236778A1 (de) * 1992-10-30 1994-05-05 Siemens Ag Verfahren zum Zusammenschluß von Sende-/Empfangseinrichtungen eines Schnurlos-Kommunikationssystems zu einer kommunikationsfähigen Einheit
US5465388A (en) * 1993-02-19 1995-11-07 Zicker; Robert G. Emergency cellular radiotelephone and method therefor
DE4318441A1 (de) * 1993-06-03 1994-12-08 Sel Alcatel Ag Notruf-System
DE4326523A1 (de) * 1993-08-06 1995-02-09 Siemens Ag Universelles Mobil-Telekommunikationssystem
JPH07254933A (ja) * 1994-03-15 1995-10-03 Fujitsu Ltd 緊急呼の処理方式
DE4413974C2 (de) * 1994-04-21 1996-07-18 Siemens Ag Notrufsystem
EP0734562A1 (fr) * 1994-10-13 1996-10-02 Koninklijke Philips Electronics N.V. Systeme radiophonique de localisation d'objets, station centrale et appareil d'alarme radiophonique

Also Published As

Publication number Publication date
DE19638112C2 (de) 1998-09-10
AR009751A1 (es) 2000-05-03
WO1998011739A3 (fr) 1998-06-18
DE19638112A1 (de) 1998-04-23
AU4450497A (en) 1998-04-02
ZA978182B (en) 1998-03-11

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