Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
  • H04W52/02—Power saving arrangements
  • H04W52/0209—Power saving arrangements in terminal devices
  • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

• the power controller of the present invention can thus be used in a radiotelephone to provide the regulated power output to a transceiver during active transceiver operations, and to provide the unregulated power output to the transceiver during stand-by transceiver operations. Accordingly, current consumed by the switching controller during stand-by operations can be reduced without significantly increasing the current consumed by the transceiver.
• the power controller can include a disable switch coupled between the power supply input and the switching controller. This disable switch can be maintained closed during active load operations so that power is provided to the switching controller, and the disable switch can be maintained open during stand-by load operations so that power is not provided to the switching controller during stand-by operations. Accordingly, current consumed by the switching controller is reduced during stand-by operations.
• Power to operate the transceiver 21 , the processor 25, and the user interface 27 can be provided by the power source 31 through the power controller 33. Accordingly, a regulated voltage lower than that provided by the battery can be provided during active transceiver operations thereby reducing current consumption and resulting battery drain. During stand-by operations, the power source can be coupled through the power controller to provide the full unregulated battery voltage.
• a linear regulator 32 can be provided between the power controller 33 and each of the transceiver 21, the processor 25, and the user interface 27.
• the linear regulator can be a single linear regulator providing power to each of the transceiver 21 , the processor 25, and the user interface 27.
• the linear regulator 32 can include a plurality of linear regulators with each of the plurality of linear regulators providing power to one or more of the transceiver, the processor, and the user interface.
• a separate linear regulator can be provided for each of the transceiver, the processor, and the user interface.
• a regulated voltage can thus be provided during stand-by operations when the full unregulated battery voltage is provided by the power controller 33.
• each of the transceiver, the processor, and/or the user interface can be defined to include a linear regulator.
• a schematic diagram of a first power controller according to the present invention is illustrated in Figure 2.
• the power source 31 may include a battery 41
• the power controller 33 may include a switch 51 (such as a p-channel MOSFET) coupled between the battery 41 and the load, and a switch 53 (such as an n-channel MOSFET) coupled between the load and a reference voltage such as the system ground.
• the switch 51 When the switch 51 is on and the switch 53 is off, current from the battery 41 flows through the switch 51 through the inductor 57 to the output node 61.
• the switch 51 When the switch 51 is off and the switch 53 is on, the current is drawn from the reference voltage (such as ground) through the switch 53 and the inductor 57 to the output node 61.
• the optional freewheeling diode 63 can be included to provide current from the reference voltage any time both switches 51 and 53 are off.
• the switching controller 55 Based on feedback from the output node 61 , the switching controller 55 can use pulse width modulation techniques such as ripple modulation or duty-cycle modulation to maintain a desired voltage at the output node 61.
• a second power controller 33' according to the present invention is illustrated in Figure 3.
• the operations of the power controller 33' are the same as those discussed above with reference to Figure 2 with the exception that the n-channel MOSFET switch 53 is eliminated.
• the use of the freewheeling diode 63' may reduce the complexity of the switching controller 55' in that a control signal from the switching controller 55' is only needed for the switch 51.
• the losses of the power controller 33' may be increased as a result of the forward voltage drop across the freewheeling diode 63'.
• the switch 51 is turned on and off to switch power from the battery 41 to the output node 61 during active transceiver operations.
• current consumption during stand-by transceiver operations can be reduced by opening a disable switch between the switching controller and the battery thereby reducing current consumed by the switching controller during stand-by operations.
• the switching controller outputs go to a low state when the disable switch is opened and the low state of the switching controller outputs causes the power source to be coupled to the output node.
• a separate bypass switch can be provided to couple the power source to the node. Power is thus switched to the transceiver during active transceiver operations so that a regulated voltage lower than that of the battery is provided, and power is coupled to the transceiver without switching during stand-by transceiver operations so that an unregulated battery voltage is provided.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Transceivers (AREA)
• Circuits Of Receivers In General (AREA)
• Telephone Function (AREA)
• Mobile Radio Communication Systems (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)
• Stand-By Power Supply Arrangements (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=23121766

Family Applications (1)

Country Status (9)

Families Citing this family (8)

Citations (1)

Family Cites Families (1)

• 1999
  • 1999-04-14 US US09/291,773 patent/US6343222B1/en not_active Expired - Lifetime
• 2000
  • 2000-03-28 AT AT00923095T patent/ATE265108T1/de not_active IP Right Cessation
  • 2000-03-28 EP EP00923095A patent/EP1173928B1/en not_active Expired - Lifetime
  • 2000-03-28 CN CN00806241A patent/CN1347595A/zh active Pending
  • 2000-03-28 AU AU43275/00A patent/AU4327500A/en not_active Abandoned
  • 2000-03-28 DE DE60010067T patent/DE60010067D1/de not_active Expired - Lifetime
  • 2000-03-28 WO PCT/US2000/008278 patent/WO2000062430A1/en not_active Ceased
  • 2000-03-28 JP JP2000611389A patent/JP2002542647A/ja active Pending
  • 2000-04-07 MY MYPI20001439A patent/MY122603A/en unknown

Patent Citations (1)

Non-Patent Citations (1)

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