Mobile communication

Patent metadata

Field	Value
Publication number	US-9319987-B2
Application number	US-201314101773-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 10, 2012
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

An apparatus for use in a mobile device includes a switch unit configured to switch a common connection of a transmitter and a first receiver from a first antenna to a second antenna and a connection of a respective second receiver from the second antenna to the first antenna; and a processing system configured to detect a switch condition that the transmitter needs to transmit via the second antenna, obtain power-related reception parameters of said first and said second receivers, cause the switch unit to switch the common connection of the transmitter and the first receiver so that the transmitter transmits via the second antenna, and adjust the power of the transmitter in dependence on the power-related reception parameters.

First claim

The invention claimed is:

1. An apparatus for use in a mobile device, the apparatus comprising:
a switch unit configured to switch a common connection of a transmitter and a first receiver between a first antenna and a second antenna and a connection of a respective second receiver between the second antenna and the first antenna; and
at least one processor, and at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus at least to:
obtain a first power-related reception parameter of the first receiver receiving via the second antenna, and a second power-related reception parameter of the second receiver receiving via the first antenna;
cause the switch unit to connect the common connection of the transmitter and the first receiver with the second antenna so that the transmitter transmits via the second antenna; and
calculate a reduction in transmission power for the transmitter to transmit via the second antenna, corresponding to a ratio of the second power-related reception parameter to the first power-related reception parameter, a difference between the second power-related reception parameter and the first power-related reception parameter, or a combination thereof.

2. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
receive at least two reception signals from the first and the second receivers;

in response to receipt of the at least two reception signals, evaluate a communication link via the first and the second antennas; and
detect a switch condition for the transmitter at least on the basis of the evaluation of the communication link.

3. The apparatus according to claim 2 , wherein the evaluated communication link comprises at least one of an uplink and/or a downlink.

4. The apparatus according to claim 2 , wherein the detected switch condition is caused by one or more of:
current consumption information,
sensor information,
running application information,
application status change information,
positioning receiver activity information, or
interoperability information.

5. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to adjust the power of the transmitter according to the calculated reduction in transmission power.

6. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to detect a switch condition that the transmitter is to transmit via the second antenna.

7. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to combine the ratio or the difference with a transmission specific value, and, in response thereto, calculate the reduction in transmission power for the transmitter according to the combination of the ratio or the difference with the transmission specific value.

8. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to at least one of:
adapt at least one of the power-related reception parameters; and
wherein the power-related parameters comprise at least one of an antenna gain, an antenna tuner gain, and an antenna aperture gain difference of at least one of the first and the second antenna.

9. The apparatus according to claim 1 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to at least one of:
provide adjustment of the transmission power of the transmitter during switching of the switch unit; and
wherein the switch unit comprises a double pole double throw switch or a special purpose switch.

10. A device, comprising:
transceiver;
at least two receivers;
at least two antennas; and
an apparatus according to claim 1 .

11. A method for use in a mobile device, the method comprising:
switching a common connection of a transmitter and a first receiver between a first antenna and a second antenna and a connection of a respective second receiver between the second antenna and the first antenna by a switch unit; and
processing comprising:
obtaining a first power-related reception parameter of the first receiver receiving via the second antenna, and a second power-related reception parameter of the second receiver receiving via the first antenna;
causing the switch unit to connect the common connection of the transmitter and the first receiver with the second antenna so that the transmitter transmits via the second antenna; and
calculating a reduction in transmission power for the transmitter to transmit via the second antenna, corresponding to a ratio of the second power-related reception parameter to the first power-related reception parameter, a difference between the second power-related reception parameter and the first power-related reception parameter, or a combination thereof.

12. The method according to claim 11 wherein the processing further comprises:
receiving at least two reception signals from the first and the second receivers;
in response to receipt of the at least two reception signals, evaluating a communication link via the first and the second antennas; and
detecting a switch condition for the transmitter at least on the basis of the evaluation of the communication link.

13. The method according to claim 12 , wherein the evaluated communication link comprises at least one of an uplink and/or a downlink.

14. The method according to claim 12 , wherein the detected switch condition is caused by one or more of:
current consumption information,
sensor information,
running application information,
application status change information,
positioning receiver activity information, or
interoperability information.

15. The method according to claim 11 , wherein the processing comprises adjusting the power of the transmitter according to the calculated reduction in transmission power.

16. The method according to claim 11 , wherein the processing further comprises detecting a switch condition that the transmitter is to transmit via the second antenna.

17. The method according to claim 11 , wherein the processing further comprises combining the ratio or the difference with a transmission specific value, and, in response thereto, calculating the reduction in transmission power for the transmitter according to the combination of the ratio or the difference with the transmission specific value.

18. The method according to claim 11 , wherein the processing further comprises at least one of:
adapting at least one of the power-related reception parameters; and
wherein the power-related parameters comprise at least one of an antenna gain, an antenna tuner gain, and an antenna aperture gain difference of at least one of the first and the second antenna.

19. The method according to claim 11 , wherein the processing comprises providing adjustment of the transmission power of the transmitter during switching of the switch unit.

20. A computer program product comprising a non-transitory computer-readable storage medium h

Assignees

• Broadcom Corp

Inventors

• Rousu Seppo
• Vehkalahti Samuel

Classifications

• H04W52/04 Primary

  Transmission power control [TPC] · CPC title

• H04B7/0608

  Antenna selection according to transmission parameters · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04W52/42 Primary

  in systems with time, space, frequency or polarisation diversity · CPC title

• H04B7/0817

  with multiple receivers and antenna path selection · CPC title