WO1998015146A2 - Method of controlling an autonomous device, e.g. a repeater, and an autonomous device - Google Patents
Method of controlling an autonomous device, e.g. a repeater, and an autonomous device Download PDFInfo
- Publication number
- WO1998015146A2 WO1998015146A2 PCT/FI1997/000595 FI9700595W WO9815146A2 WO 1998015146 A2 WO1998015146 A2 WO 1998015146A2 FI 9700595 W FI9700595 W FI 9700595W WO 9815146 A2 WO9815146 A2 WO 9815146A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- autonomous device
- autonomous
- spectrum
- remote control
- frequency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
- H04W16/16—Spectrum sharing arrangements between different networks for PBS [Private Base Station] arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
-
- 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
- H04W84/105—PBS [Private Base Station] network
Definitions
- the invention relates to a method of controlling an autonomous de- 5 vice which operates at a spectrum of at least one cellular radio network and which has a bi-directional radio connection to a subscriber terminal and which automatically and dynamicaiiy selects the frequency to be used in a bidirectional radio connection.
- One prior art radio system is the DECT system that has a bidirectional radio connection between a fixed part and a portable part.
- the system operates at frequencies ranging from 1880 to 1900 MHz, and uses 10 carrier waves.
- the channel used on each connection is dynamically selected
- FIG. 20 Figure 1 shows autonomous devices 110, 130.
- An autonomous device can be a home repeater 110 or a home base station 130.
- the home repeater 110 has a bi-directional radio connection 160 with a base station 100 of the cellular radio network, located in the area.
- the home repeater transmits the bidirectional radio connection 160 onwards to the subscriber terminal using a bi-
- connection 162 for instance a normal telephone connection or an ISDN connection, from the home base station to a public switched telephone network 120.
- the home base station 130 transmits the connection 162
- the user 152 can take along the subscriber terminal 142 when moving in the coverage area of his own home base station 130. In both cases the user connection may be less expensive than the use of a normal cellular radio network. However, when the user is beyond the coverage area of his autonomous de-
- the user acquires the desired service as inexpensively as possible and needs only one subscriber terminal.
- the described solution has one major problem that the DECT system does not have.
- the autonomous device must operate at the same frequencies as the subscriber terminal. This causes interference in the radio connections between base stations and subscriber terminals in the area.
- the radio connection that the autonomous device uses can also be interfered with. If the autonomous device is allowed to operate at the whole spectrum of a known cellular radio network, the interference can be characterized as sto- chastic. This makes it very difficult or even impossible to design a good cellular radio network.
- the object of the present invention is to provide a method that solves the problems of prior art solutions.
- the invention also relates to an autonomous device operating at the spectrum of at least one cellular radio network and having a bi-directional radio connection to the subscriber terminal and selecting automatically and dynamically the frequency to be used on the bi-directional radio connection.
- the device is characterized in that it comprises control means for directing the autonomous device to use certain parts of the spectrum of at least one cellular radio network when selecting the frequency.
- the autonomous device then operates without interference and does not cause interference to the radio connections between base stations and subscriber terminals audible in the area. Another important advantage is that the autonomous devices are not dependent on operators; only after performing the control function described in the method do they operate in the network of a certain operator.
- the device of the invention has the same advantages that have above been described for the method. The preferred embodiments of the in- vention and other more detailed implementations emphasize the advantages of the invention.
- Figure 1 shows the autonomous devices described above
- Figure 2 shows the spectrum of a cellular radio network
- Figure 3 shows how carrier waves are positioned at the spectrum of a cellular radio network
- Figure 4 shows the operating principles of the method
- Figure 5 shows the parts of the autonomous device that are essential to the invention.
- Figure 2 illustrates as an example the spectrum of a GSM cellular radio network.
- the spectrum is located between 890 and 960 MHz.
- the uplink uses the frequency range from 890 to 915 MHz 200 and the downlink uses the frequency range from 935 to 960 MHz 202.
- a certain operator has access to only a certain part of the entire spectrum.
- Figure 3 shows how the carrier waves are positioned at the spectrum of the GSM cellular radio network.
- the carrier wave space is 200 KHz.
- the Figure shows some of the first carrier waves 300, 302, 304, 306, 308, 310, 312 of the ascending transmission direction.
- a base station com- prises one or two transceivers per each sector of a cell.
- the transport capacity of one carrier wave is eight traffic channels.
- FIG. 4 illustrates the operating principles of the method.
- the home repeater 110 has a bi-directional radio connection (ascending transmission direction 902,2 MHz and descending transmission direction 947,2 MHz) 160 with the base station 100 of the cell 420 in the area. Furthermore the cells 400 (ascending transmission direction 890,2 MHz and descending transmission direction 935,2 MHz), 402 (ascending transmission direction 892,2 MHz and descending transmission direction 937,2 MHz), 404 (ascending transmission direction 894,2 MHz and descending transmission direction 939,2 MHz), 406 (ascending transmission direction 896,2 MHz and descending transmission direction 941 ,2 MHz), 408 (ascending transmission direction 898,2 MHz and descending transmission direction 943,2 MHz), 410 (ascending transmission direction 900,2 MHz and descending transmission direction 945,2 MHz) are audible in the area.
- the home repeater 110 automatically and dynamically selects the frequency to be used in a bi-directional radio connection 170.
- the home repeater 110 is directed to use certain parts 210, 220 of the spectrum 200, 202 of at least one cellular radio network when selecting the frequency.
- the home repeater 110 is directed to search for the carrier frequency which is best audible to the subscriber terminal 140 for its bi-directional radio connection 170 within the limits ranging from 910 to 914 MHz for the ascending transmission direction and ranging from 950 to 954 MHz for the descending transmission direction.
- Possible interference is thus minimized as the autonomous device 110, 130 is able to search for the frequencies it uses only in such a part 210, 220 of the spectrum 200, 202 of the cellular radio network that is not in use in the coverage area of the autonomous device 110.
- Certain parts of the spectrum are defined by giving each part 210, 220 of the spectrum a lower limit 212, 222 and an upper limit 214, 224.
- Figure 1 shows that the control is carried out by means of remote control; control information is transmitted from the base station 100 or from a part of the public telephone network 120 to the autonomous device 110, 130 using either bi-directional radio connections 160 or a cable 162.
- the remote control 160, 162 is carried out in real time.
- bi-directional radio connections 160 the remote control is carried out by means of the air interface.
- An authentication procedure is used to check that the remote control 160, 162 is permis- sible. The authentication complies with prior art and is consequently not described in detail here.
- the information received by the remote control 160, 162 is recorded in the memory 550 of the autonomous device 110, 130.
- Another way to carry out the control is to program the memory 550 of the autonomous device 110, 130 before it is taken into use.
- the memory 550 of the autonomous device 110, 130 is arranged in a separate device, for instance in a SIM card.
- the operator or the vendor sets into the memory the frequency range limits 212, 214, 222, 224 that the autonomous device can use when searching for the frequency to be used for its bi-directional radio connection 170, 172 in the subscriber terminal 140, 142.
- Figure 5 shows the parts of the autonomous device 110, 130 that are essential to the invention. In operation, the autonomous device 110, 130 uses the control method described above.
- the autonomous device comprises an antenna 500, a duplex filter 510, a receiver 530, a transmitter 520, a user interface 560 and control means 540 to direct the autonomous device 110, 130 to use certain parts 210, 220 of a spectrum 200, 202 of at least one cel- lular radio network when selecting the frequency.
- the control is carried out in such a way that the control means 540 are adapted to receive remote control 160, 162.
- the autonomous device 110, 130 comprises memory means 550 for storing the information received by remote control 160, 162. Before the device is taken into use, these memory means 550 may be pro- grammed in order to carry out the control.
- An example of the memory means 550 is the SIM card.
- the simplest way to implement the invention is that the steps of the method of the invention, which are carried out in the means described above, can be converted into executable software.
- the software is then stored in the memory means 550 and carried out in the control means 540, the software thus controlling the operation of the means 500, 510, 520, 530, 550 and 560.
- the means required by the method of the invention may also be implemented by means of general or signal processors or separate logic.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Amplifiers (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10516266A JP2001501410A (en) | 1996-10-03 | 1997-10-02 | Control method of autonomous device such as repeater and autonomous device |
AU44622/97A AU727299B2 (en) | 1996-10-03 | 1997-10-02 | Method of controlling an autonomous device, e.g. a repeater, and an autonomous device |
EP97942981A EP0932998A2 (en) | 1996-10-03 | 1997-10-02 | Method of controlling an autonomous device, e.g. a repeater, and an autonomous device |
NO991592A NO991592L (en) | 1996-10-03 | 1999-03-31 | A method of controlling an autonomous device, such as an amplifier, and an autonomous device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI963973A FI103630B1 (en) | 1996-10-03 | 1996-10-03 | Autonomous device control method and autonomous device |
FI963973 | 1996-10-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998015146A2 true WO1998015146A2 (en) | 1998-04-09 |
WO1998015146A3 WO1998015146A3 (en) | 1998-06-04 |
Family
ID=8546803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1997/000595 WO1998015146A2 (en) | 1996-10-03 | 1997-10-02 | Method of controlling an autonomous device, e.g. a repeater, and an autonomous device |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0932998A2 (en) |
JP (1) | JP2001501410A (en) |
CN (1) | CN1235742A (en) |
AU (1) | AU727299B2 (en) |
FI (1) | FI103630B1 (en) |
NO (1) | NO991592L (en) |
WO (1) | WO1998015146A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1111947A1 (en) * | 1999-12-22 | 2001-06-27 | Telefonaktiebolaget L M Ericsson (Publ) | Cordless telephone system |
EP1122963A1 (en) * | 2000-02-04 | 2001-08-08 | Alcatel | Private telephone network |
US6647244B1 (en) * | 1999-11-16 | 2003-11-11 | The Whitaker Corporation | Wireless vehicular repeater system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5040238A (en) * | 1990-06-29 | 1991-08-13 | Motorola, Inc. | Trunking system communication resource reuse method |
WO1993016534A1 (en) * | 1992-02-06 | 1993-08-19 | Motorola Inc. | Frequency sharing in multiple radiotelephone systems |
WO1993017529A1 (en) * | 1992-02-24 | 1993-09-02 | Nokia Telecommunications Oy | Telecommunication system and subscriber authentication method |
WO1995012957A1 (en) * | 1993-11-04 | 1995-05-11 | Ericsson Inc. | Radio personal communications system |
US5603080A (en) * | 1992-11-23 | 1997-02-11 | Telefonaktiebolaget Lm Ericsson | Radio coverage in closed environments |
-
1996
- 1996-10-03 FI FI963973A patent/FI103630B1/en active
-
1997
- 1997-10-02 AU AU44622/97A patent/AU727299B2/en not_active Ceased
- 1997-10-02 CN CN 97199436 patent/CN1235742A/en active Pending
- 1997-10-02 EP EP97942981A patent/EP0932998A2/en not_active Withdrawn
- 1997-10-02 WO PCT/FI1997/000595 patent/WO1998015146A2/en not_active Application Discontinuation
- 1997-10-02 JP JP10516266A patent/JP2001501410A/en active Pending
-
1999
- 1999-03-31 NO NO991592A patent/NO991592L/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5040238A (en) * | 1990-06-29 | 1991-08-13 | Motorola, Inc. | Trunking system communication resource reuse method |
WO1993016534A1 (en) * | 1992-02-06 | 1993-08-19 | Motorola Inc. | Frequency sharing in multiple radiotelephone systems |
WO1993017529A1 (en) * | 1992-02-24 | 1993-09-02 | Nokia Telecommunications Oy | Telecommunication system and subscriber authentication method |
US5603080A (en) * | 1992-11-23 | 1997-02-11 | Telefonaktiebolaget Lm Ericsson | Radio coverage in closed environments |
WO1995012957A1 (en) * | 1993-11-04 | 1995-05-11 | Ericsson Inc. | Radio personal communications system |
Non-Patent Citations (1)
Title |
---|
See also references of EP0932998A2 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6647244B1 (en) * | 1999-11-16 | 2003-11-11 | The Whitaker Corporation | Wireless vehicular repeater system |
EP1111947A1 (en) * | 1999-12-22 | 2001-06-27 | Telefonaktiebolaget L M Ericsson (Publ) | Cordless telephone system |
WO2001047306A1 (en) * | 1999-12-22 | 2001-06-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Cordless telephone system |
US6804213B2 (en) | 1999-12-22 | 2004-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Cordless telephone system |
EP1122963A1 (en) * | 2000-02-04 | 2001-08-08 | Alcatel | Private telephone network |
Also Published As
Publication number | Publication date |
---|---|
AU727299B2 (en) | 2000-12-07 |
NO991592D0 (en) | 1999-03-31 |
JP2001501410A (en) | 2001-01-30 |
WO1998015146A3 (en) | 1998-06-04 |
AU4462297A (en) | 1998-04-24 |
FI103630B (en) | 1999-07-30 |
NO991592L (en) | 1999-05-19 |
FI963973A0 (en) | 1996-10-03 |
FI103630B1 (en) | 1999-07-30 |
FI963973A (en) | 1998-04-04 |
EP0932998A2 (en) | 1999-08-04 |
CN1235742A (en) | 1999-11-17 |
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