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WO2017068356A3 - Method and apparatus for controlling equivalent isotropic radiated power - Google Patents

Method and apparatus for controlling equivalent isotropic radiated power Download PDF

Info

Publication number
WO2017068356A3
WO2017068356A3 PCT/GB2016/053285 GB2016053285W WO2017068356A3 WO 2017068356 A3 WO2017068356 A3 WO 2017068356A3 GB 2016053285 W GB2016053285 W GB 2016053285W WO 2017068356 A3 WO2017068356 A3 WO 2017068356A3
Authority
WO
WIPO (PCT)
Prior art keywords
eirp
radiated power
isotropic radiated
equivalent isotropic
weightset
Prior art date
Application number
PCT/GB2016/053285
Other languages
French (fr)
Other versions
WO2017068356A2 (en
Inventor
Peter Strong
Original Assignee
Cambium Networks Ltd
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
Priority claimed from GB1518778.4A external-priority patent/GB2543563B/en
Application filed by Cambium Networks Ltd filed Critical Cambium Networks Ltd
Priority to CN202111055962.3A priority Critical patent/CN113747560B/en
Priority to EP20212518.3A priority patent/EP3873000B1/en
Priority to CA3002909A priority patent/CA3002909A1/en
Priority to CN201680076078.9A priority patent/CN108432153B/en
Priority to EP16801278.9A priority patent/EP3365985B1/en
Publication of WO2017068356A2 publication Critical patent/WO2017068356A2/en
Publication of WO2017068356A3 publication Critical patent/WO2017068356A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)

Abstract

The Equivalent Isotropic Radiated Power EIRP emitted from an array of antenna elements at an access point (1) of a wireless communication network is controlled. The access point (1) is configured to form one or more beams (3, 5) by applying a weightset for a beamforming weighting matrix (12) to one or more signal streams in a first mode of operation. The EIRP is controlled by calibrating transmission phase and gain of a respective transmit chain (13a - 13n) for each antenna element (14a - 14n), providing a polar radiation model for an antenna element of the array, and determining a weightset for the weighting matrix (12) subject to a constraint that a maximum total EIRP for the one or more beams in combination in any azimuth direction is maintained within a predetermined EIRP limit. The determination is based at least on a spatial separation of the antenna elements, the polar radiation model and the calibrated transmission phase and gain of each respective transmit chain.
PCT/GB2016/053285 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent isotropic radiated power WO2017068356A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202111055962.3A CN113747560B (en) 2015-10-23 2016-10-21 Method for controlling EIRP and access point of wireless communication network
EP20212518.3A EP3873000B1 (en) 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent isotropic radiated power
CA3002909A CA3002909A1 (en) 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent isotropic radiated power
CN201680076078.9A CN108432153B (en) 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent omni-directional radiated power
EP16801278.9A EP3365985B1 (en) 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent isotropic radiated power

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1518778.4A GB2543563B (en) 2015-10-23 2015-10-23 Method and Apparatus for Controlling Equivalent Isotropic Radiated Power
GB1518778.4 2015-10-23
US15/074,767 2016-03-18
US15/074,767 US9787386B2 (en) 2015-10-23 2016-03-18 Method and apparatus for controlling equivalent isotropic radiated power

Publications (2)

Publication Number Publication Date
WO2017068356A2 WO2017068356A2 (en) 2017-04-27
WO2017068356A3 true WO2017068356A3 (en) 2017-05-26

Family

ID=57394609

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2016/053285 WO2017068356A2 (en) 2015-10-23 2016-10-21 Method and apparatus for controlling equivalent isotropic radiated power

Country Status (1)

Country Link
WO (1) WO2017068356A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10903919B2 (en) 2017-11-07 2021-01-26 Telefonaktiebolaget Lm Ericsson (Publ) Massive MIMO AAS supervision
WO2020153881A1 (en) * 2019-01-22 2020-07-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and devices for communication utilizing beamforming
EP4098031A4 (en) * 2020-04-24 2023-11-22 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for power control
EP4218150A1 (en) * 2020-09-23 2023-08-02 Telefonaktiebolaget LM Ericsson (publ) System and methods for configurable eirp restriction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2498462A1 (en) * 2009-11-04 2012-09-12 Alcatel Lucent Method and apparatus for antenna calibration in tdd wireless communication system based on coordinated multi-point (comp)
WO2015085510A1 (en) * 2013-12-11 2015-06-18 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for antenna calibration

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2498462A1 (en) * 2009-11-04 2012-09-12 Alcatel Lucent Method and apparatus for antenna calibration in tdd wireless communication system based on coordinated multi-point (comp)
WO2015085510A1 (en) * 2013-12-11 2015-06-18 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for antenna calibration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KUZMINSKIY ET AL: "Downlink beamforming subject to the equivalent isotropic radiated power constraint in WLAN OFDM systems", SIGNAL PROCESSING, ELSEVIER SCIENCE PUBLISHERS B.V. AMSTERDAM, NL, vol. 87, no. 5, 3 February 2007 (2007-02-03), pages 991 - 1002, XP005872006, ISSN: 0165-1684, DOI: 10.1016/J.SIGPRO.2006.09.009 *

Also Published As

Publication number Publication date
WO2017068356A2 (en) 2017-04-27

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