Reconfigurable and modular active repeater device

Patent metadata

Field	Value
Publication number	US-10484078-B2
Application number	US-201816031007-A
Country	US
Kind code	B2
Filing date	Jul 10, 2018
Priority date	Jul 11, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

An active repeater device includes a primary sector and one or more secondary sectors, receives a first beam of input RF signals. A first set of analog baseband signals, are generated based on received first beam of input RF signals. The first set of analog baseband signals are converted to a first set of coded data signals and control information is extracted from the first set of coded data signals by decoding only a header portion of the first set of coded data signals without demodulation of data portion of the first set of coded data signals. Based on the extracted control information, the first set of coded data signals are transmitted as beams of output RF signals to remote user equipment. The transmission is independent of demodulation of the data portion within the active repeater device to reduce latency for transmission of the first set of coded data signals.

First claim

What is claimed is:

1. An active repeater device, comprising:
a primary sector that includes a baseband signal processor and a first radio head (RH) unit, wherein
a first antenna array in the first RH unit is configured to receive a first beam of input RF signals, wherein the first beam of input RF signals is received from at least one of one or more remote user equipment (UEs) or a base station;
a first circuitry in the first RH unit is configured to generate a first set of analog baseband signals based on the received first beam of input RF signals;
a second circuitry in the baseband signal processor is configured to convert the first set of analog baseband signals received from the first RH unit to a first set of coded data signals; and
a digital modem circuitry in the baseband signal processor is configured to extract control information from the first set of coded data signals by decoding only a header portion of the first set of coded data signals without demodulation of data portion of the first set of coded data signals; and

one or more secondary sectors, wherein each of the one or more secondary sectors are communicatively coupled to the primary sector and includes a second RH unit, wherein
the second RH unit is configured to transmit the first set of coded data signals as one or more beams of output RF signals by one or more second antenna arrays of the one or more secondary sectors to the one or more remote UEs or a base station, based on the extracted control information from the first set of coded data signals, wherein the one or more beams of output RF signals are transmitted without demodulation of the data portion of the first set of coded data signals within the active repeater device to reduce latency for transmission of the first set of coded data signals.

2. The active repeater device of claim 1 , wherein the digital modem circuitry supports at least multi-band millimeter wave (mmWave) spectrum.

3. The active repeater device of claim 1 , wherein the primary sector and each of the one or more secondary sectors are configured to cover a portion of a 360-degree scan range for communication among the base station, the one or more remote user equipment (UEs), or another repeater device.

4. The active repeater device of claim 1 , further comprising a Received Signal Strength Indicator (RSSI) circuitry in the primary sector configured to measure RSSI of each input RF signal received from the one or more remote UEs in digital domain, wherein an accuracy of the measurement of the RSSI in the digital domain is increased based on suppression of adjacent channel signals in the digital domain.

5. The active repeater device of claim 4 , further comprising a controller in the primary sector configured to adjust gain distribution within a cascading receiver chain based on the measured RSSI.

6. The active repeater device of claim 5 , wherein the controller is further configured to adjust transmit power of a cascading transmitter chain based on the measured RSSI.

7. The active repeater device of claim 5 , wherein the controller is further configured to adjust, based on the measured RSSI, relative power of input RF signals received from different UEs in uplink communication to the base station.

8. The active repeater device of claim 1 , further comprising a Transmit Signal Strength Indicator (TSSI) circuitry in the primary sector configured to measure TSSI across a plurality of power amplifiers in a cascading transmitter chain.

9. The active repeater device of claim 8 , further comprising a controller in the primary sector configured to calibrate absolute transmission power levels in the cascading transmitter chain based on the measured TSSI.

10. The active repeater device of claim 1 , wherein the one or more second antenna arrays of the one or more secondary sectors are further configured to receive different input RF signals from the one or more remote UEs through different beam patterns and distances, wherein the received different input RF signals from the one or more remote UEs are superimposed by the primary sector and transmitted to the base station in uplink communication as a single stream, wherein the single stream includes full frequency channel that corresponds to the different input RF signals received from the one or more remote UEs.

11. The active repeater device of claim 1 , wherein a second antenna of the one or more second antenna arrays of the one or more secondary sectors is further configured to communicate a second beam of output RF signals to a first UE of the one or more remote UEs via a set of other active repeater devices in a non-line-of-sight (NLOS) transmission path, wherein the first UE is located at a distance greater than a transmission range of the active repeater device.

12. The active repeater device of claim 1 , wherein the first antenna array in the first RH unit of the primary sector and the one or more second antenna arrays of the one or more secondary sectors are configured to receive the first beam of input RF signals and transmit the one or more beams of output RF signals in accordance with multiple-input multiple-output (MIMO) reception and transmission.

13. The active repeater device of claim 1 , wherein the control information includes Time Division Duplex (TDD) time slot information and beamforming information.

14. The active repeater device of claim 13 , wherein the control information further includes frame structure and frame length information of the first set of coded data signals accessed from the header portion of the first set of coded data signals.

15. The active repeater device of claim 1 , wherein the controller is further configured to:
estimate, in a digital baseband domain, a digital echo signal in at least one current digital baseband signal received from at least the first RH unit or the second RH unit; and
remove, at a receiver side of the active repeater device, an estimate of the digital echo signal from the at least one current digital baseband signal, received as RF signals via at least the first RH unit or the second RH unit.

16. An active repeater device, comprising:
one or more secondary sectors, wherein each of the one or more secondary sectors include a baseband signal processor and a second RH unit, wherein
a second antenna array in the second RH unit is configured to receive a first beam of input RF signals, wherein the first beam of input RF signals is received from at least one of one or more remote user equipment (UEs) or a base station;
a circuitry in the second RH unit is configured to generate a first set of analog baseband signals based on the received first beam of input RF signals;
a second circuitry in the baseband signal processor is configured to convert the first set of analog baseband signals received from the second RH unit to a first set of coded data signals; and
a digital modem circuitry in the baseband signal processor is configured to extract control information from the first set of coded data signals by decoding only a header portion of the first set of coded data signals without demodulation of data portion of the first set of coded data signals; and

a primary sector, communicatively coupled to the one or more secondary sectors, includes a first radio head (RH) unit, wherein
the first RH unit is configured to transmit the first set of coded data signals as a beam of output RF signals, by a first antenna array of the primary sector, to at least the one or more remote UEs or a base station, based on the extracted control information from the first set of coded data signals, wherein the beam of outp

Assignees

• Movandi Corp

Inventors

• Gharavi Sam
• Rofougaran Ahmadreza
• Boers Michael
• Yoon Seunghwan
• Sridharan Kartik
• Shin Donghyup
• Shirinfar Farid
• Wu Stephen
• Rofougaran Maryam

Classifications

• H04B7/15528 Primary

  Control of operation parameters of a relay station to exploit the physical medium · CPC title

• H04L5/0023

  Time-frequency-space · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04B7/1555

  Selecting relay station antenna mode, e.g. selecting omnidirectional -, directional beams, selecting polarizations · CPC title