WO1997033447A1 - Method and system for testing the condition of a subscriber station in a radio system - Google Patents
Method and system for testing the condition of a subscriber station in a radio system Download PDFInfo
- Publication number
- WO1997033447A1 WO1997033447A1 PCT/FI1997/000151 FI9700151W WO9733447A1 WO 1997033447 A1 WO1997033447 A1 WO 1997033447A1 FI 9700151 W FI9700151 W FI 9700151W WO 9733447 A1 WO9733447 A1 WO 9733447A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- testing
- subscriber
- subscriber station
- message
- test
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/24—Testing correct operation
Definitions
- the present invention relates to a method of testing the condition of a subscriber station in a radio system providing a wireless subscriber interface.
- the invention further relates to a radio system providing a wireless subscriber interface and comprising a subscriber network element in a data transmission connection with a local exchange of a public telephone network, a base station and subscriber stations, the subscriber network element and said base station comprising means for transfer of telecommunication signals between the local exchange and the subscriber stations.
- the invention further relates to a sub- scriber station in a radio system providing a wireless subscriber interface and consisting of terminal equipment having a radio part, and of a user interface linked to the terminal equipment by means of a two-wire line.
- the invention relates to monitoring the operation of a subscriber station used in a WLL system (Wireless subscriber interface), that is, a radio system providing a wireless subscriber interface.
- WLL system Wireless subscriber interface
- a usual two-wire telephone set is linked by means of special terminal equipment via a radio connection to a local exchange in a telephone network, the exchange in turn being linked to the public telephone network via network cabling.
- a subscriber station refers to the equipment available to a sub- scriber for transmitting and receiving telecommunication signals, that is, in the case of the WLL system, the subscriber station comprises WLL terminal equip ⁇ ment consisting of a radio part and a teleadapter (to which a user interface, such as a telephone set, is connected), and a user interface, such as a tele ⁇ phone, a telefax terminal, a computer/modem combination or the like, con- nected to the terminal equipment.
- a method of monitoring the operation of a subscriber station in the WLL system is previously known, wherein a call is transmitted to the sub- scriber station, the call being selected so that the subscriber station answers it automatically. Having answered the call, the subscriber station is diagnosed to be operative. Conversely, if the subscriber station does not answer the call, the call is repeated until the subscriber station has failed to answer a prede ⁇ termined number of calls, and consequently the subscriber station is diag ⁇ nosed to be inoperative.
- the most significant weakness of the above known method is that the only information conveyed on the subscriber station is that the WLL sub ⁇ scriber station answers a call received via the radio path. This information is not sufficient for the operator to, e.g. by maintenance or the like, prevent dis ⁇ turbance, or alternatively, deal with temporary disturbances before the user of the subscriber station detects the disturbance.
- a subscriber station is equipped with testing means for execution of tests indica ⁇ tive of the condition of the subscriber station, a predetermined testing mes ⁇ sage is transmitted via the radio path to the testing means of the subscriber station when no connection is active from the subscriber station, the testing message containing information indicating the test to be carried out, and a message indicative of the results of the test carried out is received from the subscriber station via the radio path.
- the invention is based on the idea that it is significantly easier to test the condition of a subscriber station when subscriber stations are equipped with special test units by means of which the subscriber units can independently carry out given test measurements, and transmit information indicative of the results of the test to the operator as a response to a received testing message. Consequently the operator can, whenever desirable, e.g. daily at a predetermined time of the day, start a test sequence for testing the condition of the subscriber stations in the system.
- the most significant ad ⁇ vantages of the method of the invention are that it offers the operator a chance to monitor the condition of e.g.
- the invention further relates to a system to which the method of the invention can be applied.
- the system of the invention is characterized in that the system comprises a subscriber station with testing means for testing the condition of the subscriber station as a response to a testing message trans ⁇ mitted from the subscriber network element via the radio path, the information in said testing message indicating to the testing means the test to be carried out, and means for transmitting a message indicative of the results of the test to the subscriber network element via the radio path, and that the subscriber network element comprises means for transmitting said testing message at a time specified by the operator, and means for receiving a message indicative of the results of the test from the subscriber station, and for forwarding the in ⁇ formation indicative of said results to the operator.
- the system of the in ⁇ vention provides the operator with a better chance than before to monitor the operation of separate subscriber stations centralized, e.g. from a network management centre.
- the test ⁇ ing means of the subscriber station comprise means for measuring the signal level of a received signal, and for transmitting a message indicative of the measuring result via the subscriber network element further to the operator.
- This embodiment of the invention allows the operator to receive information on the field strength as seen by the subscriber station and to conclude from this information if e.g. problems of a malfunctioning subscriber station are due to a weak field strength, i.e. the fact that the subscriber station is e.g. incorrectly placed.
- the operator can contact the user of the subscriber station and tell him/her to transfer the subscriber station to another place where the field strength is likely to be better, or alternatively, by reconfiguration, to trans ⁇ fer the subscriber station to an adjacent base station.
- the testing message and the message indicative of the results of the test are transmitted on the control channel of the system, execution of the test speeds up as no traffic channel has to be assigned to the subscriber station during the test, but all information relevant to the test can be transmitted on the control channel between the subscriber network element and the subscriber station by utilizing system call frames.
- signalling be ⁇ tween a subscriber station and a subscriber network element is essentially similar to that defined in NMT-900 specifications, the subscriber network ele- ment being arranged to use frame 1a, 1a', 1a" or 1b defined in NMT-900 specifications point 4.3.2.1 as a testing message, and the subscriber station is arranged to transfer the message indicative of the test results to the subscriber network element by frame 10a or 10d defined in NMT-900 specifications point 4.3.2.2.
- This embodiment of the invention provides a chance to apply the method of the invention to the WLL system based on the NMT-900 mobile communication system, the signalling of the subscriber station and the sub ⁇ scriber network element associated with testing a subscriber station being formed such that subscriber stations of the NMT-900 system can also be util ⁇ ized in the system.
- the invention further relates to a subscriber station for applying the method of the invention, and which can be used in the system of the invention.
- the subscriber station of the invention is characterized in that the terminal equipment comprises testing means for testing the condition of the subscriber station as a response to a testing message transmitted to the testing means, the information in said testing message indicating to the testing means the test to be performed, and means for transmitting a message indicative of the test results via the radio path to other parts of the system.
- the subscriber sta ⁇ tion of the invention allows the operator to monitor its operation via the radio path without the user of the subscriber station having to participate in or be aware of the monitoring.
- the preferred embodiments of the method, system and subscriber station of the invention are disclosed in the attached dependent claims 2 to 3, 5 to 7, and 9.
- Figure 1 shows a block diagram of a first preferred embodiment of the system of the invention
- FIGS 2A and 2B illustrate signalling frames utilized in the method of the invention.
- Figure 1 shows a block diagram of a first preferred embodiment of the radio system of the invention.
- Figure 1 shows the part of the WLL system to which the method of the invention can be applied.
- the WLL system shown in Figure 1 is based on the NMT-900 system (Nordisk Mobil Switzerland), simpli ⁇ fied by irrelevant properties having been omitted.
- Base stations 5 are similar to parts of the NMT-900 cellular radio system. This means that signalling be- tween a subscriber station 1 and the base stations is quite similar to the sig ⁇ nalling between a subscriber station and a base station in the NMT-900 mobile communication system.
- calls to a conventional NMT-900 sys ⁇ tem mobile station 9 can also be forwarded via the base stations 5 and a sub ⁇ scriber network element 6, provided that the operator has programmed the subscriber network element 6 for forwarding calls regarding said telephone.
- the subscriber station 1 shown in Figure 1 consists of a user inter ⁇ face, i.e. a telephone set 2, and terminal equipment 3.
- the telephone set 2 shown in Figure 1 can be a conventional voice-frequency telephone set con- nectable to a fixed telephone network.
- the terminal equip ⁇ ment 3 comprises signal processing means for adapting a speech path to a radio channel.
- Such signal processing means include e.g. a radio part 11 comprising an antenna 8, a radio transmitter and a radio receiver, and a tele- adapter 10 for fitting the radio part to a conventional telephone set 2.
- the subscriber station 1 uses radio frequency signals to communi ⁇ cate via the antenna 8 with the base station 5 (the Figure shows three base stations BS) via which calls are forwarded to the subscriber network element 6 and further to an exchange 7 in a PSTN network (Public Switched Telephone Network), i.e. a fixed telephone network.
- PSTN network Public Switched Telephone Network
- the sub ⁇ scriber network element 6 can be linked to the local exchange of a fixed tele ⁇ phone network via e.g. an open multiplexer interface of type CCITT Q.512 V2 or V5.1 or V5.2 using a 2 Mbit/s PCM system (Pulse Code Modulation).
- the subscriber network element 6 shown in Figure 1 is quite similar to the MTX exchange in the NMT-900 system except that properties irrelevant to the WLL system have been omitted, such as operations associated with handover not needed in the WLL system.
- the terminal equipment 3 of the subscriber station 1 comprises a measuring unit 13 with means for testing the condition of the subscriber station using a plurality of optional tests. Conse- quently the measuring unit 13 is able to monitor the condition of the subscriber station 1 by measuring e.g. the signal level of a signal received via the radio path.
- the measuring unit 13 further comprises means for e.g. testing the con ⁇ dition of the user interface 2 by means of current, voltage and insulation re ⁇ sistance measurements performed on the two-wire line 4. By means of these tests the terminal equipment also finds out if a user interface 2 is at all linked to it, or if the user has unplugged the telephone from the terminal equipment 3.
- the measuring unit 13 preferably also comprises a memory for re ⁇ cording data regarding disturbances in the operation of the terminal equip ⁇ ment.
- the data is stored in the memory until a testing message is forwarded to the subscriber station from the subscriber network element 6, leading to re ⁇ lease of the data for the use of the operator.
- the operator may activate, e.g. from a network management centre by remote control, a test sequence in which the subscriber network element 6 goes through every system subscriber station one at a time, and performs one or more tests on them.
- a test sequence may start e.g. automatically daily at a given time.
- the testing time is preferably chosen so that during the testing the system loading level is low (a small number of calls in progress).
- FIGS 2A and 2B illustrate the signalling frames utilized in the method of the invention and in the system of Figure 1.
- the sub ⁇ scriber network element 6 transmits a testing message S1 via a base station to the subscriber station 1 on a control channel.
- a frame 1 a, 1a', 1a" or 1b de ⁇ fined in the NMT-900 specifications point 4.3.2.1 (NMT Doc 900-1 , January 29, 1985) is preferably used as the testing message.
- Figure 2A illustrates frame 1a (Calling Channel Indication, General).
- variable Z is always assigned the value 0, whereas the test desired is denoted by values of the variables A1 to A3.
- the subscriber station After performing the desired test, the subscriber station forwards information on the measuring result to the subscriber network element by us ⁇ ing message S2, preferably frame 10a or 10d defined in the NMT-900 specifi- cations point 4.3.2.2.
- Figure 2B illustrates frame 10a (Call acknowledgement from MS on calling channel, and access on access channel). In accordance with this embodiment (and as distinct from the NMT-900 specifications) said frame is transmitted in full.
- the information indicative of the test results is for- warded via variables A1 to A4.
- a testing message S1 in which variable A1 has been as ⁇ signed the value 1 , is forwarded to the testing means 13, the measuring unit performs a test to see if a user interface is linked to the terminal equipment and if malfunction has occurred in the subscriber station. After the tests, infor- mation on the results is forwarded via the subscriber network element to the operator by message S2, i.e.
- a testing message S1 i.e. the frame of Figure 2A, in which variable A1 has been assigned the value 2
- the measuring unit 13 measures the signal level of the received signal.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9531498A JP2000506337A (en) | 1996-03-07 | 1997-03-06 | Method and system for testing the status of a subscriber station in a wireless system |
EP97906206A EP0878107A1 (en) | 1996-03-07 | 1997-03-06 | Method and system for testing the condition of a subscriber station in a radio system |
AU20977/97A AU718830B2 (en) | 1996-03-07 | 1997-03-06 | Method and system for testing the condition of a subscriber station in a radio system |
BR9707847A BR9707847A (en) | 1996-03-07 | 1997-03-06 | Process for testing the condition of a subscriber station in a radio system and a subscriber station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI961074A FI103167B (en) | 1996-03-07 | 1996-03-07 | A method for determining the condition of a subscriber unit |
FI961074 | 1996-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997033447A1 true WO1997033447A1 (en) | 1997-09-12 |
Family
ID=8545603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1997/000151 WO1997033447A1 (en) | 1996-03-07 | 1997-03-06 | Method and system for testing the condition of a subscriber station in a radio system |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0878107A1 (en) |
JP (1) | JP2000506337A (en) |
CN (1) | CN1212817A (en) |
AU (1) | AU718830B2 (en) |
BR (1) | BR9707847A (en) |
CA (1) | CA2248151A1 (en) |
FI (1) | FI103167B (en) |
WO (1) | WO1997033447A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045601A1 (en) * | 1999-04-14 | 2000-10-18 | Ascom AG | Measuring the service quality in communication networks |
EP1071299A1 (en) * | 1999-07-21 | 2001-01-24 | Alstom | System for monitoring the state of a link between a master station and a slave station |
WO2001095651A1 (en) * | 2000-06-08 | 2001-12-13 | Willtek Communications Gmbh | Method for testing the transmission of text messages by radio devices |
EP1239688A1 (en) * | 2001-03-08 | 2002-09-11 | Sony International (Europe) GmbH | Mobile telecommunication means comprising means for detecting and reporting errors |
EP1304895A2 (en) * | 2001-10-17 | 2003-04-23 | Motorola, Inc. | Transceivers and method for use in radio communications |
WO2004064431A2 (en) * | 2003-01-09 | 2004-07-29 | Mverify Corporation | Method and system for evaluating wireless applications |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102072176B1 (en) * | 2013-08-26 | 2020-01-31 | 에스케이플래닛 주식회사 | Service providing device for transferring push/target message, push/target message transfer system comprising the same, control method thereof and computer readable medium having computer program recorded therefor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449246A (en) * | 1980-05-02 | 1984-05-15 | Harris Corporation | Orderwire communication system |
EP0543161A2 (en) * | 1991-10-23 | 1993-05-26 | STMicroelectronics S.r.l. | Method and circuit device for measuring operation paramaters of an interface circuit and a telephone subscriber line connected thereto |
WO1995009512A1 (en) * | 1993-09-27 | 1995-04-06 | Nokia Telecommunications Oy | Radio system and a subscriber terminal for a radio system |
EP0720407A2 (en) * | 1994-12-28 | 1996-07-03 | Ntt Mobile Communications Network Inc. | Method for monitoring the state of interference by a base station of a mobile radio communication system |
-
1996
- 1996-03-07 FI FI961074A patent/FI103167B/en active
-
1997
- 1997-03-06 WO PCT/FI1997/000151 patent/WO1997033447A1/en not_active Application Discontinuation
- 1997-03-06 JP JP9531498A patent/JP2000506337A/en active Pending
- 1997-03-06 CN CN 97192829 patent/CN1212817A/en active Pending
- 1997-03-06 CA CA002248151A patent/CA2248151A1/en not_active Abandoned
- 1997-03-06 BR BR9707847A patent/BR9707847A/en not_active Application Discontinuation
- 1997-03-06 AU AU20977/97A patent/AU718830B2/en not_active Ceased
- 1997-03-06 EP EP97906206A patent/EP0878107A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449246A (en) * | 1980-05-02 | 1984-05-15 | Harris Corporation | Orderwire communication system |
EP0543161A2 (en) * | 1991-10-23 | 1993-05-26 | STMicroelectronics S.r.l. | Method and circuit device for measuring operation paramaters of an interface circuit and a telephone subscriber line connected thereto |
WO1995009512A1 (en) * | 1993-09-27 | 1995-04-06 | Nokia Telecommunications Oy | Radio system and a subscriber terminal for a radio system |
EP0720407A2 (en) * | 1994-12-28 | 1996-07-03 | Ntt Mobile Communications Network Inc. | Method for monitoring the state of interference by a base station of a mobile radio communication system |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045601A1 (en) * | 1999-04-14 | 2000-10-18 | Ascom AG | Measuring the service quality in communication networks |
WO2000062567A1 (en) * | 1999-04-14 | 2000-10-19 | Ascom Ag | Measurement of service quality in communications networks |
EP1071299A1 (en) * | 1999-07-21 | 2001-01-24 | Alstom | System for monitoring the state of a link between a master station and a slave station |
FR2796787A1 (en) * | 1999-07-21 | 2001-01-26 | Alstom | INFORMATION EXCHANGE SYSTEM BETWEEN A MASTER STATION AND DIFFERENT SLAVE STATIONS CONNECTED BY A RADIO-ELECTRIC INFORMATION TRANSMISSION NETWORK |
WO2001095651A1 (en) * | 2000-06-08 | 2001-12-13 | Willtek Communications Gmbh | Method for testing the transmission of text messages by radio devices |
EP1239688A1 (en) * | 2001-03-08 | 2002-09-11 | Sony International (Europe) GmbH | Mobile telecommunication means comprising means for detecting and reporting errors |
EP1304895A2 (en) * | 2001-10-17 | 2003-04-23 | Motorola, Inc. | Transceivers and method for use in radio communications |
EP1304895A3 (en) * | 2001-10-17 | 2003-11-26 | Motorola, Inc. | Transceivers and method for use in radio communications |
WO2004064431A2 (en) * | 2003-01-09 | 2004-07-29 | Mverify Corporation | Method and system for evaluating wireless applications |
WO2004064431A3 (en) * | 2003-01-09 | 2004-10-07 | Mverify Corp | Method and system for evaluating wireless applications |
Also Published As
Publication number | Publication date |
---|---|
EP0878107A1 (en) | 1998-11-18 |
FI103167B1 (en) | 1999-04-30 |
FI103167B (en) | 1999-04-30 |
AU718830B2 (en) | 2000-04-20 |
AU2097797A (en) | 1997-09-22 |
CA2248151A1 (en) | 1997-09-12 |
JP2000506337A (en) | 2000-05-23 |
FI961074A (en) | 1997-09-08 |
CN1212817A (en) | 1999-03-31 |
FI961074A0 (en) | 1996-03-07 |
BR9707847A (en) | 1999-07-27 |
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