GB2492516B - Method and apparatus for time division duplex communication - Google Patents

Method and apparatus for time division duplex communication

Info

Publication number
GB2492516B
GB2492516B GB201219203A GB201219203A GB2492516B GB 2492516 B GB2492516 B GB 2492516B GB 201219203 A GB201219203 A GB 201219203A GB 201219203 A GB201219203 A GB 201219203A GB 2492516 B GB2492516 B GB 2492516B
Authority
GB
United Kingdom
Prior art keywords
signal
filter component
time division
division duplex
vco
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB201219203A
Other versions
GB201219203D0 (en
GB2492516A (en
Inventor
Lauri Niskanen
Seppo Rousu
Juha Valtanen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile Corp
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
Application filed by Renesas Mobile Corp filed Critical Renesas Mobile Corp
Priority to GB201219203A priority Critical patent/GB2492516B/en
Publication of GB201219203D0 publication Critical patent/GB201219203D0/en
Publication of GB2492516A publication Critical patent/GB2492516A/en
Priority to PCT/IB2013/050157 priority patent/WO2013105020A1/en
Priority to US13/851,244 priority patent/US20130208636A1/en
Application granted granted Critical
Publication of GB2492516B publication Critical patent/GB2492516B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

Apparatus and method for Time Division Duplex (TDD) communication comprising a first circuit pathway for transmission of a first Radio Frequency (RF) signal, the first RF signal being generated based on a signal from a Voltage controlled oscillator (VCO) 610, the first circuit pathway comprising a filter component 614, a second pathway for reception of a second RF signal, and control circuitry, wherein said filter component is arranged to receive, during at least a portion of a reception mode, local signal leakage resulting from at least the signal from the VCO, wherein the second RF signal and the signal from the VCO comprise a common frequency component, and wherein the control circuitry is arranged to control, during at least a portion of a reception mode, said filter component to modify a frequency response of the filter component to attenuate at least said common frequency component.
GB201219203A 2012-01-09 2012-01-09 Method and apparatus for time division duplex communication Expired - Fee Related GB2492516B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB201219203A GB2492516B (en) 2012-01-09 2012-01-09 Method and apparatus for time division duplex communication
PCT/IB2013/050157 WO2013105020A1 (en) 2012-01-09 2013-01-08 Method and apparatus for time division duplex communication
US13/851,244 US20130208636A1 (en) 2012-01-09 2013-03-27 Method and apparatus for time division duplex communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201219203A GB2492516B (en) 2012-01-09 2012-01-09 Method and apparatus for time division duplex communication

Publications (3)

Publication Number Publication Date
GB201219203D0 GB201219203D0 (en) 2012-12-12
GB2492516A GB2492516A (en) 2013-01-02
GB2492516B true GB2492516B (en) 2013-12-04

Family

ID=47291856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201219203A Expired - Fee Related GB2492516B (en) 2012-01-09 2012-01-09 Method and apparatus for time division duplex communication

Country Status (1)

Country Link
GB (1) GB2492516B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5444864A (en) * 1992-12-22 1995-08-22 E-Systems, Inc. Method and apparatus for cancelling in-band energy leakage from transmitter to receiver
GB2317760A (en) * 1996-09-27 1998-04-01 Nec Technologies Mobile telephone apparatus
WO2005104390A1 (en) * 2004-03-29 2005-11-03 Qualcomm Incorporated Adaptive interference filtering
US20070082617A1 (en) * 2005-10-11 2007-04-12 Crestcom, Inc. Transceiver with isolation-filter compensation and method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5444864A (en) * 1992-12-22 1995-08-22 E-Systems, Inc. Method and apparatus for cancelling in-band energy leakage from transmitter to receiver
GB2317760A (en) * 1996-09-27 1998-04-01 Nec Technologies Mobile telephone apparatus
WO2005104390A1 (en) * 2004-03-29 2005-11-03 Qualcomm Incorporated Adaptive interference filtering
US20070082617A1 (en) * 2005-10-11 2007-04-12 Crestcom, Inc. Transceiver with isolation-filter compensation and method therefor

Also Published As

Publication number Publication date
GB201219203D0 (en) 2012-12-12
GB2492516A (en) 2013-01-02

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140102 AND 20140108

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140109 AND 20140115

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170109