Switching diversity in scalable radio frequency communication system

Patent metadata

Field	Value
Publication number	US-2016150591-A1
Application number	US-201514952882-A
Country	US
Kind code	A1
Filing date	Nov 25, 2015
Priority date	Nov 26, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A system implementing switching diversity in a scalable radio frequency communication system includes a primary radio frequency integrated circuit (RFIC), a first secondary RFIC, and a second secondary RFIC. The first secondary RFIC is configured to receive a radio frequency (RF) signal from a device via antenna elements based on a first beam setting, and transmit the RF signal to the primary RFIC. The primary RFIC is configured to receive the RF signal; downconvert the RF signal to an intermediate frequency (IF) signal; transmit the IF signal to a baseband processor; receive, from the baseband processor, a control signal including a second beam setting; and transmit the control signal to the second secondary RFIC. The second secondary RFIC is configured to receive the control signal from the first primary RFIC, and receive the first RF signal from the device via second antenna elements based on the second beam setting.

First claim

What is claimed is:

1 . A system comprising:
a first secondary radio frequency integrated circuit (RFIC) configured to receive a first radio frequency (RF) signal from a device via first antenna elements based at least in part on a first beam setting, and transmit the first RF signal to a first primary RFIC; the first primary RFIC configured to:
receive the first RF signal from the first secondary RFIC;
downconvert the first RF signal to a first intermediate frequency (IF) signal and transmit the first IF signal to a baseband processor;
receive, from the baseband processor, a first control signal comprising a second beam setting for receiving the first RF signal through a second secondary RFIC; and
transmit the first control signal to the second secondary RFIC; and
the second secondary RFIC configured to receive the first control signal from the first primary RFIC, and receive the first RF signal from the device via second antenna elements based at least in part on the second beam setting.

2 . The system of claim 1 , wherein the first primary RFIC is further configured to:
transmit at least a portion of the first control signal to the first secondary RFIC; and the first secondary RFIC is further configured to:
power down a receive path or enter a low power mode in response to receiving the at least the portion of the first control signal.

3 . The system of claim 1 , wherein the first control signal is indicative of one or more phase shifter settings of the second secondary RFIC, and the second secondary RFIC is further configured to:
adjust one or more phase shifters based at least in part on the one or more phase shifter settings.

4 . The system of claim 1 , wherein the first beam setting is provided to the first secondary RFIC by the baseband processor via the first primary RFIC.

5 . The system of claim 1 , wherein:
the first secondary RFIC is further configured to receive a second RF signal from the primary RFIC and transmit the second RF signal to the device via the first antenna elements based at least in part on a third beam setting; the primary RFIC is further configured to receive, from the baseband processor, a second control signal comprising a fourth beam setting for transmitting the second RF signal through the second secondary RFIC, and transmit the second control signal to the second secondary RFICs; and the second secondary RFIC is further configured to receive, from the primary RFIC, the second control signal, receive the second RF signal from the primary RFIC, and transmit the second RF signal via the second antenna elements based at least in part on the fourth beam setting.

6 . The system of claim 5 , wherein the first primary RFIC is further configured to:
transmit at least a portion of the second control signal to the first secondary RFIC; and the first secondary RFIC is further configured to:
power down a transmit path or enter a low power mode in response to receiving the at least the portion of the second control signal.

7 . The system of claim 1 , wherein:
the first primary RFIC is further configured to:
receive a second control signal, the second control signal being indicative of a third beam setting;
receive a second IF signal from the baseband processor;
generate a second RF signal based at least in part on the second IF signal; and
transmit the second RF signal to the second secondary RFIC; and
the second secondary RFIC is further configured to:
generate a third RF signal based at least in part on the second RF signal and the third beam setting; and
transmit the third RF signal to the device.

8 . The system of claim 1 , wherein:
the first beam setting is associated with a first direction, and the second beam setting is associated with a second direction different from the first direction.

9 . The system of claim 1 , wherein the first secondary RFIC is further configured to:
transmit a packet to the device based on a beam switching pattern, the packet comprising at least a first transmission block and a second transmission block, by transmitting the first transmission block using a third beam setting and transmitting the second transmission block using a fourth beam setting.

10 . The system of claim 9 , wherein:
the first secondary RFIC is further configured to:
receive feedback information associated with the packet from the device;
transmit the feedback information to the baseband processor via the first primary RFIC; and
receive information indicative of adjustments to the beam switching pattern from the baseband processor.

11 . The system of claim 1 , wherein:
the first control signal is based on detection of a movement of the device, and the detection is based on the first RF signal received from the device by the first secondary RFIC.

12 . The system of claim 1 , wherein the first control signal is based on a power level associated with the first RF signal received from the device by the first secondary RFIC.

13 . A method comprising:
transmitting, by a first secondary radio frequency integrated circuit (RFIC) via first antenna elements, a first plurality of radio frequency (RF) signals, wherein the first plurality of RF signals is based on a first sequence, and each of the first plurality of RF signals is associated with a different beam setting among a plurality of beam settings; transmitting, by a second secondary RFIC, a second plurality of RF signals via second antenna elements, wherein the second plurality of RF signals is based on a second sequence, and each of the second plurality of RF signals is associated with a different beam setting among the plurality of beam settings; receiving feedback information from a device, wherein the feedback information is associated with the first plurality of RF signals and the second plurality of RF signals; and receiving a control signal from a baseband processor, wherein the control signal is based on the feedback information and indicative of a first beam setting and a second beam setting, the first beam setting is associated with the first secondary RFIC, and the second beam setting is associated with the second secondary RFIC.

14 . The method of claim 13 , further comprising:
generating, by the first secondary RFIC, a third RF signal based on the first beam setting; transmitting, by the first secondary RFIC, the third RF signal; generating, by the second secondary RFIC, a fourth RF signal based on the second beam setting; and transmitting, by the second secondary RFIC, the fourth RF signal.

15 . The method of claim 13 , wherein a time duration associated with transmitting the first plurality of RF signals overlaps with a time duration associated with transmitting the second plurality of RF signals.

16 . The method of claim 13 , further comprising:
receiving, by a primary RFIC, a first intermediate frequency (IF) signal from the baseband processor; generating, by the primary RFIC, a third RF signal based on the first IF signal; and transmitting, by the primary RFIC, the third RF signal to the first secondary RFIC and the second secondary RFIC, the first plurality of RF signals and the second plurality of RF signals being based on the third RF signal.

17 . A computer program product comprising instructions stored in a tangible computer-readable storage medium, the instructions comprising:
instructions to receive a first radio frequency (RF) signal from a first secondary radio frequency integrated circuit (RFIC), the first RF signal having been received by the first secondary RFIC via fi

Assignees

• Broadcom Corp

Inventors

• Tarighat Mehrabani Alireza
• Torab Jahromi Payam
• Ibrahim Brima Babatunde

Classifications

• H04W52/38

  TPC being performed in particular situations · CPC title

• H04W76/046 Primary

  Electricity · mapped topic

• H04W16/28 Primary

  using beam steering · CPC title

• H04B7/063

  Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection · CPC title

• H04L27/18 Primary

  Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) · CPC title