WO1998031180A1 - Procedure and system for ensuring emergency calls in a wireless local loop - Google Patents
Procedure and system for ensuring emergency calls in a wireless local loop Download PDFInfo
- Publication number
- WO1998031180A1 WO1998031180A1 PCT/FI1998/000010 FI9800010W WO9831180A1 WO 1998031180 A1 WO1998031180 A1 WO 1998031180A1 FI 9800010 W FI9800010 W FI 9800010W WO 9831180 A1 WO9831180 A1 WO 9831180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- call
- procedure
- emergency
- start message
- allowed
- Prior art date
Links
Classifications
-
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
Definitions
- the present invention relates to a procedure for ensuring emergency calls in a wireless local loop, as defined in the preamble of claim 1.
- a terminal device is connected via a wireless link to an access node (AN) or a WLL controller.
- the access node may consist of multiplexers, crossbar switches and various transmitting systems.
- the WLL system may be based e.g. on technology used in mobile telephone systems, such as the GSM/DCS1800 technology (GSM, Global System for Mobile Communications; DCS, Digital Cellular System) .
- GSM Global System for Mobile Communications
- DCS Digital Cellular System
- GSM Global System for Mobile Communications
- DCS Digital Cellular System
- GSM Global System for Mobile Communications
- DCS-1800 is a mobile communication system standardized by ETSI, which is based on the GSM specification and aims at a more effective use of microcells and which works in the frequency range of 1800 MHz.
- the access node or WLL controller can be connected to the telephone exchange using e.g. the V5.2 proto- col consistent with the ETS 300 347-2 standard.
- ensuring an emergency call means that, in the event of overload on a base station in a wireless local loop, the setup of a call initiated by a subscriber's station is ensured while at the same time preventing the setdown of other ongoing emergency calls from other subscriber's stations under the same base station when resources have to be released for the setup of an emergency call by disconnecting other calls.
- a call started with an emergency call start message may initiate forced release of a call of a lower priority.
- the system controlling the radio resources of the base station does not know which one of the ongoing calls is a normal call and which one is an emergency call. This is because only emergency calls made from a so-called non-transparent WLL subscriber's station to a common emergency number, e.g. 112, begin with an emergency call start message (e.g. an EMERGENCY_SETUP message consistent with the GSM specifications) . Calls made to other emergency numbers specified in the subscriber identification unit, such as the SIM card provided in the subscriber s station, begin with a normal call start message, e.g. a SETUP message consistent with the GSM specifications, if free communication channels are available.
- an emergency call start message e.g. an EMERGENCY_SETUP message consistent with the GSM specifications
- the problem is that when the base station is overloaded and a subscriber's station in a wireless local loop under it starts an emergency call (which begins with an emergency call start message, such as EMERGENCY_SETUP) , forced release of resources for the emergency call in accordance with the GSM specifications is impossible because the other call to be disconnected to make room for the emergency call may also be an emergency call although it has been started with a normal call start message (SETUP) . Hand-over of the ongoing call to another base station is also impossible because subscriber mobility is not allowed in the WLL access no- de.
- an emergency call start message such as EMERGENCY_SETUP
- the object of the invention is to present a procedure that makes it possible to ensure the setup of an emergency call in an overload situation in a wireless local loop while at the same time preventing forced disconnection of other ongoing emergency calls.
- a further object of the invention is to present a procedure that allows even an emergency call initiated with a normal call start message to be identified or distinguished from normal calls, so that the wireless network management of the system will know which call is an emergency call and which call is a normal call that can be disconnected to release resources.
- the procedure of the invention is characterized by what is presented in claim 1.
- a call initiated with a normal call start message is assigned top priority and a definition is ma- de that prevents forced disconnection of the call as well as disconnection of another call
- b) the dialled number information of the call is compared with a set of predetermined emergency numbers, and if the call is addressed to a number not included in the set of predetermined emergency numbers, then the priority level of the call is lowered and forced disconnection of the call is allowed.
- the system is always able to decide which one of the ongoing calls is an emergency call and which one is a normal call that can be released in an overload situation.
- the priority level reduced at stage b) is updated in the interface defining the signalling between the radio line of a wireless local loop and a wired telephone network, in par- ticular in a so-called Abis interface, and information regarding the new lowered priority is given to the resource management system of the wireless network, thus letting it know which ones of the calls initiated with a normal call start message are subject to forced discon- nection when an emergency call is received in an overload situation.
- the call start messages are messages consistent with a mobile communication specification. In an embodiment of the procedure, the call start messages are messages consistent with the GSM specification.
- the normal call start message is a SETUP call start message.
- the call start message for an emergency call is an EMERGENCY_SETUP call start message.
- the highest priority assigned at stage a) is priority level 1 accor- ding to the GSM specification.
- the lowered priority assigned at stage b) is a priority level other than 1 according to the GSM specification.
- the compari- son at stage b) is carried out in the access node.
- the predetermined emergency number is an emergency number stored in a subscriber identification unit, such as a SIM card, in the subscriber's station.
- a subscriber identification unit such as a SIM card
- the emergency number prede- fined in a subscriber identification unit, such as a SIM card, is naturally also defined in the parameters of the access node concerned to allow comparison.
- the figure shows a diagram representing a wireless local loop system WLL. in a wireless local loop, in which subscriber's stations MS are connected over a radio link via a base station BS to an access node AN and from the access node to a local exchange LE in a wired network.
- top priority 1 call is not subject to forced disconnection (vulnerability disabled) call is not allowed to cause forced disconnection of another call.
- top priority 1 call is not subject to forced disconnection (vulnerability disabled) call is allowed to cause forced disconnection of another ongoing call having a lower priority.
- the access node AN makes the appropriate connections to the local exchange LE as required for a call started with a SETUP message.
- the number dialled by the subscriber is available to the access node AN for interpretation, it is compared with the predefined emergency numbers. If the call is addressed to the common emergency number 112 or some other emergency number spe- cified in the SIM, the priority of the call will not be changed during the call, in other words, its priority level 1 is preserved.
- a call started with a SETUP message is addressed to a number other than the common emergency num- ber 112 or some other emergency number specified in the SIM, then the process comparing the dialling will send data indicating a lowered priority of the call along the signalling chain towards the wireless network.
- the parameters of the call are set so that the priority of the call is lowered (to a value other than 1) vulnerability of the call is allowed.
- the signalling process of the Abis inter- face which defines the signalling between the transmission path of the wireless local loop and the wired telephone network
- said signalling process updates the lowered priority for itself and also informs the wireless network resource management of the cell in question about the new priority level.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9807059-2A BR9807059A (en) | 1997-01-10 | 1998-01-02 | Procedure for securing emergency calls on a wireless local loop. |
CN98801727A CN1243648A (en) | 1997-01-10 | 1998-01-02 | Procedure and system for ensuring emergency clals in wireless local loop |
CA002277066A CA2277066A1 (en) | 1997-01-10 | 1998-01-02 | Procedure and system for ensuring emergency calls in a wireless local loop |
EP98900089A EP1013123A1 (en) | 1997-01-10 | 1998-01-02 | Procedure and system for ensuring emergency calls in a wireless local loop |
AU53253/98A AU722240B2 (en) | 1997-01-10 | 1998-01-02 | Procedure and system for ensuring emergency calls in a wireless local loop |
JP53057898A JP2001508255A (en) | 1997-01-10 | 1998-01-02 | Procedure and system for securing an emergency call in a wireless local loop |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI970118 | 1997-01-10 | ||
FI970118A FI103557B1 (en) | 1997-01-10 | 1997-01-10 | Procedure for securing an emergency call in a wireless subscriber network |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998031180A1 true WO1998031180A1 (en) | 1998-07-16 |
Family
ID=8547543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1998/000010 WO1998031180A1 (en) | 1997-01-10 | 1998-01-02 | Procedure and system for ensuring emergency calls in a wireless local loop |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1013123A1 (en) |
JP (1) | JP2001508255A (en) |
CN (1) | CN1243648A (en) |
AR (1) | AR012029A1 (en) |
AU (1) | AU722240B2 (en) |
BR (1) | BR9807059A (en) |
CA (1) | CA2277066A1 (en) |
FI (1) | FI103557B1 (en) |
WO (1) | WO1998031180A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002011483A1 (en) * | 2000-08-02 | 2002-02-07 | Siemens Aktiengesellschaft | Method for transmitting emergency messages in a radio communications system |
WO2004107793A1 (en) * | 2003-05-28 | 2004-12-09 | Huawei Technologies Co., Ltd. | A method of priority accessing for the priority access and channel assignment user |
WO2005055629A1 (en) * | 2003-12-08 | 2005-06-16 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call centre |
US7020454B2 (en) | 2001-06-14 | 2006-03-28 | Lg Electronics Inc. | Method for making communication in wireless local loop system |
EP1747687A2 (en) * | 2004-05-07 | 2007-01-31 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
WO2007112056A1 (en) * | 2006-03-24 | 2007-10-04 | Kyocera Corporation | Method, wireless network controller and wireless network for priority call management |
JP2009153141A (en) * | 2008-12-24 | 2009-07-09 | Kyocera Corp | Wireless subscriber system, line connection controller for wireless subscriber system and recording medium |
WO2011069679A1 (en) * | 2009-12-11 | 2011-06-16 | Telegärtner Elektronik GmbH | Sim card and emergency call module |
US8145182B2 (en) | 2004-05-07 | 2012-03-27 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US8160543B2 (en) | 2007-06-08 | 2012-04-17 | Research In Motion Limited | Methods and apparatus for use in processing disconnected emergency calls and other communications involving mobile communication devices and the remote monitoring thereof |
US8682279B2 (en) | 2004-05-07 | 2014-03-25 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1104978A1 (en) * | 1999-11-30 | 2001-06-06 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Method and device for selecting services |
US7499411B2 (en) * | 2005-05-26 | 2009-03-03 | Symbol Technologies, Inc. | System and method for providing automatic load balancing and redundancy in access port adoption |
JP4438703B2 (en) * | 2005-06-27 | 2010-03-24 | 株式会社デンソー | In-vehicle wireless communication device |
CN100426924C (en) * | 2005-09-04 | 2008-10-15 | 华为技术有限公司 | Radio local loop system, device and method for processing urgent call |
JP4893182B2 (en) * | 2006-09-20 | 2012-03-07 | 沖電気工業株式会社 | IP phone system using wireless LAN |
DE102007060377A1 (en) * | 2007-12-12 | 2009-07-02 | T-Mobile Internationale Ag | Method for establishing prioritized incoming calls in overload situations in a mobile radio network |
CN101500041A (en) * | 2008-01-30 | 2009-08-05 | 中兴通讯股份有限公司 | Call control method and apparatus |
CN111092998A (en) * | 2020-02-21 | 2020-05-01 | 深圳震有科技股份有限公司 | Telephone emergency calling method, system and storage medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0304955A2 (en) * | 1987-08-27 | 1989-03-01 | Nec Corporation | Radio concentrator system capable of completing calls under congested traffic |
WO1997016931A1 (en) * | 1995-11-01 | 1997-05-09 | Motorola Inc. | Method and apparatus for allocating a communication channel in a communication system |
-
1997
- 1997-01-10 FI FI970118A patent/FI103557B1/en active
-
1998
- 1998-01-02 BR BR9807059-2A patent/BR9807059A/en not_active IP Right Cessation
- 1998-01-02 EP EP98900089A patent/EP1013123A1/en not_active Withdrawn
- 1998-01-02 CA CA002277066A patent/CA2277066A1/en not_active Abandoned
- 1998-01-02 AU AU53253/98A patent/AU722240B2/en not_active Ceased
- 1998-01-02 WO PCT/FI1998/000010 patent/WO1998031180A1/en not_active Application Discontinuation
- 1998-01-02 JP JP53057898A patent/JP2001508255A/en active Pending
- 1998-01-02 CN CN98801727A patent/CN1243648A/en active Pending
- 1998-01-07 AR ARP980100079A patent/AR012029A1/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0304955A2 (en) * | 1987-08-27 | 1989-03-01 | Nec Corporation | Radio concentrator system capable of completing calls under congested traffic |
WO1997016931A1 (en) * | 1995-11-01 | 1997-05-09 | Motorola Inc. | Method and apparatus for allocating a communication channel in a communication system |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002011483A1 (en) * | 2000-08-02 | 2002-02-07 | Siemens Aktiengesellschaft | Method for transmitting emergency messages in a radio communications system |
US6990329B2 (en) | 2000-08-02 | 2006-01-24 | Siemens Aktiengesellschaft | Method for transmitting emergency call messages in a radio communications system |
US7020454B2 (en) | 2001-06-14 | 2006-03-28 | Lg Electronics Inc. | Method for making communication in wireless local loop system |
WO2004107793A1 (en) * | 2003-05-28 | 2004-12-09 | Huawei Technologies Co., Ltd. | A method of priority accessing for the priority access and channel assignment user |
US7412225B2 (en) | 2003-12-08 | 2008-08-12 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call centre |
US7050785B2 (en) | 2003-12-08 | 2006-05-23 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call centre |
US7139549B2 (en) | 2003-12-08 | 2006-11-21 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call center |
US7991383B2 (en) | 2003-12-08 | 2011-08-02 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call centre |
WO2005055629A1 (en) * | 2003-12-08 | 2005-06-16 | Research In Motion Limited | Apparatus and method of explicit indication of call from emergency call centre |
EP1747687A4 (en) * | 2004-05-07 | 2008-08-06 | Interdigital Tech Corp | Supporting emergency calls on a wireless local area network |
EP1747687A2 (en) * | 2004-05-07 | 2007-01-31 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US8145182B2 (en) | 2004-05-07 | 2012-03-27 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US8682279B2 (en) | 2004-05-07 | 2014-03-25 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US8849283B2 (en) | 2004-05-07 | 2014-09-30 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US9258690B2 (en) | 2004-05-07 | 2016-02-09 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
US9826376B2 (en) | 2004-05-07 | 2017-11-21 | Interdigital Technology Corporation | Supporting emergency calls on a wireless local area network |
WO2007112056A1 (en) * | 2006-03-24 | 2007-10-04 | Kyocera Corporation | Method, wireless network controller and wireless network for priority call management |
US8126468B2 (en) | 2006-03-24 | 2012-02-28 | Kyocera Corporation | Apparatus, system and method for priority call management |
US8160543B2 (en) | 2007-06-08 | 2012-04-17 | Research In Motion Limited | Methods and apparatus for use in processing disconnected emergency calls and other communications involving mobile communication devices and the remote monitoring thereof |
US8483655B2 (en) | 2007-06-08 | 2013-07-09 | Research In Motion Limited | Methods and apparatus for use in processing disconnected emergency calls and other communications involving mobile communication devices and the remote monitoring thereof |
JP2009153141A (en) * | 2008-12-24 | 2009-07-09 | Kyocera Corp | Wireless subscriber system, line connection controller for wireless subscriber system and recording medium |
WO2011069679A1 (en) * | 2009-12-11 | 2011-06-16 | Telegärtner Elektronik GmbH | Sim card and emergency call module |
Also Published As
Publication number | Publication date |
---|---|
AU722240B2 (en) | 2000-07-27 |
FI970118A (en) | 1998-07-11 |
BR9807059A (en) | 2000-05-02 |
AR012029A1 (en) | 2000-09-27 |
EP1013123A1 (en) | 2000-06-28 |
JP2001508255A (en) | 2001-06-19 |
FI103557B (en) | 1999-07-15 |
CA2277066A1 (en) | 1998-07-16 |
CN1243648A (en) | 2000-02-02 |
AU5325398A (en) | 1998-08-03 |
FI970118A0 (en) | 1997-01-10 |
FI103557B1 (en) | 1999-07-15 |
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