WO1990004293A1 - Location-based adaptive radio control - Google Patents

Location-based adaptive radio control Download PDF

Info

Publication number
WO1990004293A1
WO1990004293A1 PCT/US1989/003452 US8903452W WO9004293A1 WO 1990004293 A1 WO1990004293 A1 WO 1990004293A1 US 8903452 W US8903452 W US 8903452W WO 9004293 A1 WO9004293 A1 WO 9004293A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio
location
adjusting
determining
channel
Prior art date
Application number
PCT/US1989/003452
Other languages
French (fr)
Inventor
Richard Cameron Sagers
William Dennis Werner
Scott Maurice Hall
Original Assignee
Motorola, Inc.
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 Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1990004293A1 publication Critical patent/WO1990004293A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/283—Power depending on the position of the mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities

Definitions

  • This invention pertains to radios.
  • Two-way radios have a number of operating parameters including, but not limited to, transmitting power, operating frequencies (channel), operating band, modulation type, modulation index, frequency deviation, squelch setting, channel spacing, control channel (for trunked communications), noise blanker characteristic, and receive bandwidth.
  • operating parameters including, but not limited to, transmitting power, operating frequencies (channel), operating band, modulation type, modulation index, frequency deviation, squelch setting, channel spacing, control channel (for trunked communications), noise blanker characteristic, and receive bandwidth.
  • modulation type such as FM or AM
  • a parameter which is usually, but not always, variable is the operating frequency or
  • a significant factor in determining the current optimum operating parameters is the geographic location of the radio.
  • a particular radio As an example, a particular radio
  • radios For radios whose location is not fixed (that is, mobile), on the other hand, it is desirable for operating parameters to be adjusted whenever a change in the location of the radio causes the operating environment to change. For example, using our above example, if a mobile radio initially selects an operating frequency band and transmit power while it is located in downtown Los Angeles, the radio may need to periodically adjust (change) these frequency band and power settings as its location constantly changes during the course of its journey from the downtown area to a final destination of Death Valley. Moreover, it also may be advantageous to change other operating parameters during the course of such a journey.
  • a common control station uses a control channel to allocate the shared channels amongst the subscriber units.
  • a subscriber wishes to place a call, it first tunes to the control channel and transmits a channel request message to the control station.
  • the control station reserves, or assigns, an idle channel for the call.
  • the control station transmits the channel assignment information to the requesting subscriber via the control channel.
  • the requesting subscriber unit tunes to the assigned channel and proceeds to place its call.
  • trunked system A A possible scenario which might arise in such trunked systems is a mobile subscriber unit which travels in geographic region A served by trunked system A with associated control channel A, and which mobile subscriber unit also travels in region B served by trunked system B with associated control channel B.
  • trunked radio systems no convenient mechanism exists to allow the subscriber unit to easily and readily change from one trunked system to another when travelling in this way.
  • a method is provided, and an apparatus described, whereby one or more operating parameters of a mobile radio may be varied automatically, and without human intervention, based on the location of the radio.
  • Fig. 1 depicts the location-based adaptive radio control arrangement.
  • Fig. 2 depicts a flow diagram illustrating the steps of the invention.
  • the invention may be used with any location determining device or system (101), such as LORAN, satellite global positioning systems, or dead reckoning, and with any mobile radio having adjustable operating parameters.
  • location determining systems are well understood and need not be described here in any further detail.
  • mobile refers to a non-fixed location radio, and includes both vehicle mounted and personally carried radios.
  • the invention (100) is shown in Fig. 1.
  • Switch 1 (102) is arranged to select the operating frequency band of the radio. When switch 1 is in position designated “A”, the radio operates on the 800 MHz band (103). When switch 1 is in the position designated “B”, the radio operates on the 30 MHz band (104).
  • Switch 2 (105) is arranged to select the output power level of the transmitter. When switch 2 is in the position designated "A”, the output power is 10 Watts
  • Switch 3 (108) is arranged to select the control channel of the radio. When switch 3 is in the position designated "A", the control channel selected is channel A
  • the mobile radio (120) is equipped with a location determining device (101) which, in turn, is arranged to control the position of switch 1 (102), switch 2 (105), and switch 3 (108).
  • the location determining device (101) is capable of determining whether the radio is located in location A (the urban area) or location B (the rural area).
  • the location determining device (101) determines the radio is located in location A, it causes switch 1 (102) to reside in position "A", thereby causing the radio to operate on the 800 MHz band. Also when the location determining device (101) determines the radio is located in location A, it causes switch 2 (105) to reside in position "A", thereby causing the radio to transmit at 10 Watts power output. Finally, when the location determining device (101) determines the radio is located in location A, it causes switch 3 (108) to also reside in position "A", thereby causing the radio to use channel A as a control channel.
  • the location determining device (101) determines the radio is located in location B, it causes switch 1 (102) to reside in position "B", thereby causing the radio to operate on the 30 MHz band. Also when the location determining device (101) determines the radio is located in location B, it causes switch 2 (105) to reside in position "B”, thereby causing the radio to transmit at 100 Watts power output. Finally, when the location determining device (101) determines the radio is located in location B, it causes switch 3 (108) to reside in position "B", thereby causing the radio to use channel B as a oontrol channel.
  • Fig. 2 shows the flow diagram (200) of the steps of the invention.
  • the process starts with the radio determining its location (201). ⁇ f the radio determines it is located in a first predetermined location, such as location A (the urban area), the radio operates on the 800 MHz band
  • the radio determines it is located in location B (the rural area). If the radio determines it is located in location B (the rural area), the radio
  • the radio then returns (220) to its initial determining step (201), and makes a new determination of its location.

Abstract

A method (200) and apparatus (100) is provided for a radio having adjustable operating parameters to adjust at least one such adjustable operating parameter based on the current location of the radio. Operating parameters which may be so adjusted include, but are not limited to, the following: transmitting power (106, 107), operating channel, operating band (103, 104), modulation type, modulation index, frequency deviation, squelch setting, channel spacing, control channel (109, 110) (for trunked communications), noise blanker characteristic, and receive bandwidth. The location is determined by the radio (101).

Description

LOCATION-BASED ADAPTIVE RADIO CONTROL
Background of the Invention
This invention pertains to radios.
Two-way radios have a number of operating parameters including, but not limited to, transmitting power, operating frequencies (channel), operating band, modulation type, modulation index, frequency deviation, squelch setting, channel spacing, control channel (for trunked communications), noise blanker characteristic, and receive bandwidth. Of these parameters, some are fixed, while others may be, to some degree, variable. One example of a parameter which is usually, but not always, fixed is the modulation type, such as FM or AM. One example of a parameter which is usually, but not always, variable is the operating frequency or
frequencies (channel).
At a given time, it may be desirable to adjust the operating parameters in response to the current operating environment to obtain optimum performance. For example, it may be desirable to minimize interference to other users.
A significant factor in determining the current optimum operating parameters is the geographic location of the radio. As an example, a particular radio
operating in a densely-populated area, such as downtown Los Angeles, California must contend with, among other factors, a relatively large number of other radios using the same, frequency spectrum. As a result, the available frequencies (channels) may be limited. Also, the radio must limit its transmitting power to avoid interfering with neighboring users. On the other hand, if this identical radio were located in the middle of a
sparsely-populated area, such as Death Valley,
California, it would contend with few (if any) other radios using the same frequency spectrum. As a result, more channels are available and the transmitting power may be increased to achieve greater range without
interfering with neighboring users.
For radios which are fixed in location, that is, non-mobile, usually there are few parameters, if any, which need to be varied during day-to-day operation. This is because the operating environment is relatively constant for the radio which is due, to a large extent, to the fact that the location of the radio is fixed.
For radios whose location is not fixed (that is, mobile), on the other hand, it is desirable for operating parameters to be adjusted whenever a change in the location of the radio causes the operating environment to change. For example, using our above example, if a mobile radio initially selects an operating frequency band and transmit power while it is located in downtown Los Angeles, the radio may need to periodically adjust (change) these frequency band and power settings as its location constantly changes during the course of its journey from the downtown area to a final destination of Death Valley. Moreover, it also may be advantageous to change other operating parameters during the course of such a journey.
Another situation where a mobile radio might need to adjust operating parameters based on its location arises in trunked radio systems. In such systems, many subscriber units share a fixed (and typically smaller) number of communication channels. In such systems, a common control station uses a control channel to allocate the shared channels amongst the subscriber units. When a subscriber wishes to place a call, it first tunes to the control channel and transmits a channel request message to the control station. Upon receipt of this message (and assuming an idle channel is available) the control station reserves, or assigns, an idle channel for the call. The control station then transmits the channel assignment information to the requesting subscriber via the control channel. Upon receipt of this channel assignment message, the requesting subscriber unit tunes to the assigned channel and proceeds to place its call.
A possible scenario which might arise in such trunked systems is a mobile subscriber unit which travels in geographic region A served by trunked system A with associated control channel A, and which mobile subscriber unit also travels in region B served by trunked system B with associated control channel B. With present trunked radio systems, no convenient mechanism exists to allow the subscriber unit to easily and readily change from one trunked system to another when travelling in this way.
In general, then, it is desirable for a mobile radio to have the ability to change operating parameters based on its current location. Given this fact, the question arises of how to effect the desired changes in the operating parameters. While it is obvious the human operator could manually adjust the operating parameters to obtain optimum performance, this could also prove to be risky. This is because, due to human error, the operator may be mistaken as to either the present location of the radio, or the current optimum operating parameters for the present location of the radio, or both. Summary of the Invention
Therefore, it is an object of the present invention to vary one or more operating parameters of a mobile radio automatically, and without human
intervention, based on the location of the radio.
According to the invention, a method is provided, and an apparatus described, whereby one or more operating parameters of a mobile radio may be varied automatically, and without human intervention, based on the location of the radio.
Brief Description of the Drawings
Fig. 1 depicts the location-based adaptive radio control arrangement.
Fig. 2 depicts a flow diagram illustrating the steps of the invention.
Detailed Description of the Invention
The invention may be used with any location determining device or system (101), such as LORAN, satellite global positioning systems, or dead reckoning, and with any mobile radio having adjustable operating parameters. Such location determining systems are well understood and need not be described here in any further detail. (In the context of this invention, "mobile" refers to a non-fixed location radio, and includes both vehicle mounted and personally carried radios.)
The invention (100) is shown in Fig. 1.
Switch 1 (102) is arranged to select the operating frequency band of the radio. When switch 1 is in position designated "A", the radio operates on the 800 MHz band (103). When switch 1 is in the position designated "B", the radio operates on the 30 MHz band (104). Switch 2 (105) is arranged to select the output power level of the transmitter. When switch 2 is in the position designated "A", the output power is 10 Watts
(106). When switch 2 is in the position designated "B", the output power is 100 Watts (107).
Switch 3 (108) is arranged to select the control channel of the radio. When switch 3 is in the position designated "A", the control channel selected is channel A
(109). When switch 3 is in position designated "B", the control channel selected is channel B (110).
The mobile radio (120) is equipped with a location determining device (101) which, in turn, is arranged to control the position of switch 1 (102), switch 2 (105), and switch 3 (108). In this embodiment, the location determining device (101) is capable of determining whether the radio is located in location A (the urban area) or location B (the rural area).
When the location determining device (101) determines the radio is located in location A, it causes switch 1 (102) to reside in position "A", thereby causing the radio to operate on the 800 MHz band. Also when the location determining device (101) determines the radio is located in location A, it causes switch 2 (105) to reside in position "A", thereby causing the radio to transmit at 10 Watts power output. Finally, when the location determining device (101) determines the radio is located in location A, it causes switch 3 (108) to also reside in position "A", thereby causing the radio to use channel A as a control channel.
When the location determining device (101) determines the radio is located in location B, it causes switch 1 (102) to reside in position "B", thereby causing the radio to operate on the 30 MHz band. Also when the location determining device (101) determines the radio is located in location B, it causes switch 2 (105) to reside in position "B", thereby causing the radio to transmit at 100 Watts power output. Finally, when the location determining device (101) determines the radio is located in location B, it causes switch 3 (108) to reside in position "B", thereby causing the radio to use channel B as a oontrol channel.
Fig. 2 shows the flow diagram (200) of the steps of the invention.
The process starts with the radio determining its location (201). ϊf the radio determines it is located in a first predetermined location, such as location A (the urban area), the radio operates on the 800 MHz band
(202), adjusts the transmitter to 10 Watts of output power (203), and uses channel A as a control channel (204). The radio then returns (220) to its initial determining step (201), and makes a new determination of its location.
In this embodiment, if the radio determines it is located in location B (the rural area), the radio
operates on the 30 MHz band (212), adjusts its
transmitter to 100 Watts of output power (213), and uses channel B as a control channel (214). The radio then returns (220) to its initial determining step (201), and makes a new determination of its location.
What is claimed is:

Claims

CLAIMS:
1. A method for adjusting a radio comprising the steps of: in said radio:
(a) determining said radio's location; and,
(b) responsive to said determination, automatically adjusting at least one variable operating parameter.
2. A method for adjusting a radio, comprising the steps of: in said radio:
(a) determining when said radio is located within a predetermined region; and,
(b) responsive to said determination, automatically adjusting at least one variable operating parameter.
3. A method for adjusting a radio, comprising the steps of: in said radio:
(a) determining which of several predetermined regions said radio is located within; and,
(b) responsive to said determination, automatically adjusting at least one variable operating parameter.
4. A method for adjusting a radio, comprising the steps of:
(a) determining said radio's distance from at least one predetermined fixed point; and,
(b) responsive to said determination, automatically adjusting at least one variable operating parameter.
5. A radio having adjusting means, said adjusting means comprising:
means for determining said radio's location; and, means responsive to said determining means for automatically adjusting at least one variable operating parameter.
6. A radio having adjusting means, said adjusting means comprising:
means for determining when said radio is located within a predetermined region; and,
means responsive to said determining means for automatically adjusting at least one variable operating parameter.
7. A radio having adjusting means, said adjusting means comprising:
means for determining which of several predetermined regions said mobile radio is located within; and,
means responsive to said determining means for automatically adjusting at least one variable operating parameter.
8. A radio having adjusting means, said adjusting means comprising:
means for determining said radio's distance from at least one predetermined fixed point; and,
means responsive to said determining means for automatically adjusting at least one variable operating parameter.
PCT/US1989/003452 1988-10-05 1989-08-14 Location-based adaptive radio control WO1990004293A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25352988A 1988-10-05 1988-10-05
US253,529 1988-10-05

Publications (1)

Publication Number Publication Date
WO1990004293A1 true WO1990004293A1 (en) 1990-04-19

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Application Number Title Priority Date Filing Date
PCT/US1989/003452 WO1990004293A1 (en) 1988-10-05 1989-08-14 Location-based adaptive radio control

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CN (1) CN1041676A (en)
AU (1) AU4187789A (en)
CA (1) CA1317348C (en)
IL (1) IL91148A0 (en)
WO (1) WO1990004293A1 (en)

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WO1999008399A2 (en) * 1997-08-12 1999-02-18 Qualcomm Incorporated A method of and apparatus for controlling transmission signal power of communication signals in a communication system
EP0963125A2 (en) * 1998-06-01 1999-12-08 Motorola, Inc. Subscriber unit and method for updating a function value
FR2782866A1 (en) * 1998-08-31 2000-03-03 Canon Europa Nv Local radio link parameter adaptation device for office equipment communication, modifies link parameters in response to sensed proximity of equipment user
EP0994578A2 (en) * 1998-08-31 2000-04-19 Canon Europa N.V. Adaptation of radio transmission parameters and optimisation of positioning of a cordless communication system
US6091954A (en) * 1994-09-01 2000-07-18 Telefonaktiebolaget Lm Ericsson Channel assignment in enhanced fixed-plan mobile communications systems
WO2002021478A2 (en) * 2000-09-07 2002-03-14 Ericsson Inc. Method to control the update frequency of a positioning device by a mobile terminal
WO2002005571A3 (en) * 2000-07-07 2002-04-25 Microcom Gmbh Method for automatic frequency switching in mobile radio
WO2003003591A2 (en) * 2001-06-27 2003-01-09 Harris Corporation Transmitter circuit architecture for reducing in-band noise in point to multipoint communication
KR100376582B1 (en) * 2000-11-27 2003-03-17 에스케이 텔레콤주식회사 Channel switching method for packet transmission in IMT-2000 system
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FR2687874A1 (en) * 1992-02-06 1993-08-27 Motorola Inc RADIOTELEPHONE APPARATUS OPERATING IN A DUAL, CORDLESS AND CELLULAR SYSTEM, AND ITS OPERATING METHOD.
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KR970703660A (en) * 1994-07-23 1997-07-03 랄프 홀거 베렌스; 게오르그 뮐러 Single point: multi-points radio link system
EP0725489A4 (en) * 1994-08-19 1998-09-16 Seiko Epson Corp Broadcasting station data detecting apparatus for a mobile body and broadcast receiving apparatus for mobile bodies
EP0725489A1 (en) * 1994-08-19 1996-08-07 Seiko Epson Corporation Broadcasting station data detecting apparatus for a mobile body and broadcast receiving apparatus for mobile bodies
US6181921B1 (en) 1994-08-19 2001-01-30 Seiko Epson Corporation Broadcasting station data detector and broadcast receiver for moving body that search a channel map based on location
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US5579306A (en) * 1994-09-01 1996-11-26 Ericsson Inc. Time and frequency slot allocation system and method
US6091954A (en) * 1994-09-01 2000-07-18 Telefonaktiebolaget Lm Ericsson Channel assignment in enhanced fixed-plan mobile communications systems
EP0865188A2 (en) * 1997-03-14 1998-09-16 Nokia Mobile Phones Ltd. Portable telephone with automatic selection of the operational mode
EP0865188A3 (en) * 1997-03-14 2005-10-05 Nokia Corporation Portable telephone with automatic selection of the operational mode
US6463278B2 (en) 1997-03-14 2002-10-08 Nokia Mobile Phones Ltd. Telephone automatic mode selection
US6594500B2 (en) 1997-08-12 2003-07-15 Qualcomm Incorporated Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers
WO1999008399A3 (en) * 1997-08-12 1999-06-10 Qualcomm Inc A method of and apparatus for controlling transmission signal power of communication signals in a communication system
US6269250B1 (en) 1997-08-12 2001-07-31 Qualcomm, Inc. Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers
US6070085A (en) * 1997-08-12 2000-05-30 Qualcomm Inc. Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers
WO1999008399A2 (en) * 1997-08-12 1999-02-18 Qualcomm Incorporated A method of and apparatus for controlling transmission signal power of communication signals in a communication system
EP0963125A3 (en) * 1998-06-01 2000-12-20 Motorola, Inc. Subscriber unit and method for updating a function value
EP0963125A2 (en) * 1998-06-01 1999-12-08 Motorola, Inc. Subscriber unit and method for updating a function value
EP0994578A3 (en) * 1998-08-31 2000-07-12 Canon Europa N.V. Adaptation of radio transmission parameters and optimisation of positioning of a cordless communication system
EP0994578A2 (en) * 1998-08-31 2000-04-19 Canon Europa N.V. Adaptation of radio transmission parameters and optimisation of positioning of a cordless communication system
FR2782866A1 (en) * 1998-08-31 2000-03-03 Canon Europa Nv Local radio link parameter adaptation device for office equipment communication, modifies link parameters in response to sensed proximity of equipment user
WO2002005571A3 (en) * 2000-07-07 2002-04-25 Microcom Gmbh Method for automatic frequency switching in mobile radio
WO2002021478A2 (en) * 2000-09-07 2002-03-14 Ericsson Inc. Method to control the update frequency of a positioning device by a mobile terminal
US6856807B1 (en) 2000-09-07 2005-02-15 Ericsson Inc. Method to control the update frequency of a positioning device by a mobile terminal
US7209753B2 (en) 2000-09-07 2007-04-24 Ericsson Inc. Method to control the update frequency of a positioning device by a mobile terminal
WO2002021478A3 (en) * 2000-09-07 2002-10-03 Ericsson Inc Method to control the update frequency of a positioning device by a mobile terminal
KR100376582B1 (en) * 2000-11-27 2003-03-17 에스케이 텔레콤주식회사 Channel switching method for packet transmission in IMT-2000 system
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IL91148A0 (en) 1990-03-19
CN1041676A (en) 1990-04-25
AU4187789A (en) 1990-05-01
CA1317348C (en) 1993-05-04

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