BR0007520A - In-band signaling for synchronization over a voice communications network - Google Patents

In-band signaling for synchronization over a voice communications network

Info

Publication number
BR0007520A
BR0007520A BR0007520-5A BR0007520A BR0007520A BR 0007520 A BR0007520 A BR 0007520A BR 0007520 A BR0007520 A BR 0007520A BR 0007520 A BR0007520 A BR 0007520A
Authority
BR
Brazil
Prior art keywords
voice communications
communications network
synchronizing
call path
remote unit
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.)
Pending
Application number
BR0007520-5A
Other languages
Portuguese (pt)
Inventor
Dan A Preston
Joseph Preston
Rod L Proctor
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.)
Airbiquity Inc
Original Assignee
Airbiquity Inc
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 Airbiquity Inc filed Critical Airbiquity Inc
Publication of BR0007520A publication Critical patent/BR0007520A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/009—Closed loop measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

"SINALIZAçãO EM BANDA PARA SINCRONIZAçãO EM UMAREDE DE COMUNICAçõES DE VOZ". Métodos de determinaçãode uma latência de sistema de um caminho de chamada de áudiode uma rede de comunicações de voz, e para sincronizar umaunidade remota (108) com um oscilador de referência de umaestação de referência (102) envolvem a transmissão de um sinal dereferência (106) através do caminho de chamada de áudio a partirda estação de referência (102) para a unidade remota (108), ondeum sinal de resposta (112) é gerado e transmitido de volta para aestação de referência (102) através do caminho de chamada apósum intervalo de retardo de resposta pré selecionado (t~ del~). Umadiferença de tempo de ida e volta (t~ RT~) é utilizada paradeterminar a latência total do sistema, que é então levada emconsideração na sincronização da unidade remota (108) com ooscilador de referência. os sinais de referência e resposta (106,112) são gerados como sinais de freq³ência de áudio que lembramos sons da voz humana para evitar a atenuação destrutora pelarede de comunicações de voz. Uma modalidade inclui umaunidade de telefone gem fio possuindo um receptor SPS embutido.O receptor SPS inclui um oscilador que pode ser sincronizadoutilizando-se o método para aperfeiçoar o desempenho do receptorSPS. Métodos convenientes e eficientes de sincronização elocalização de dados dentro de infra-estruturas de rede decomunicação sem fio existentes são descritos."BAND SIGNALING FOR SYNCHRONIZATION IN A VOICE COMMUNICATIONS UMAREDE". Methods for determining a system latency of an audio call path of a voice communications network, and for synchronizing a remote unit (108) with a reference oscillator from a reference station (102) involve the transmission of a reference signal (106) ) via the audio call path from the reference station (102) to the remote unit (108), where a response signal (112) is generated and transmitted back to the reference station (102) via the call path after one pre-selected response delay interval (t ~ del ~). A round trip time difference (t ~ RT ~) is used to determine the total system latency, which is then taken into account in synchronizing the remote unit (108) with the reference oscillator. the reference and response signals (106,112) are generated as audio frequency signals that resemble human voice sounds to avoid the destructive attenuation by the voice communications network. One modality includes a wireless phone unit with a built-in SPS receiver. The SPS receiver includes an oscillator that can be synchronized using the method to improve the performance of the SPS receiver. Convenient and efficient methods of synchronizing and locating data within existing wireless network infrastructures are described.

BR0007520-5A 1999-01-15 2000-01-18 In-band signaling for synchronization over a voice communications network Pending BR0007520A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11609399P 1999-01-15 1999-01-15
PCT/US2000/001157 WO2001003344A1 (en) 1999-01-15 2000-01-18 In-band signalling for synchronization in a voice communications network

Publications (1)

Publication Number Publication Date
BR0007520A true BR0007520A (en) 2001-10-30

Family

ID=22365192

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007520-5A Pending BR0007520A (en) 1999-01-15 2000-01-18 In-band signaling for synchronization over a voice communications network

Country Status (10)

Country Link
EP (1) EP1145468A1 (en)
JP (1) JP4482258B2 (en)
CN (1) CN1340254A (en)
AU (1) AU761918B2 (en)
BR (1) BR0007520A (en)
CA (1) CA2360973A1 (en)
HK (1) HK1042389A1 (en)
MX (1) MXPA01007086A (en)
TR (1) TR200102405T2 (en)
WO (1) WO2001003344A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0011797D0 (en) 2000-05-16 2000-07-05 Yeoman Group Plc Improved vehicle routeing
DE10048335A1 (en) * 2000-09-29 2002-04-25 Siemens Ag Method for measuring delay times between a clock generator and a communication subscriber in a communication network with chaining topology, delay time compensation based thereon and corresponding communication network
GB0319206D0 (en) * 2003-08-15 2003-09-17 Microwave Designs Ltd Protocol for timing measurement or synchronisation
US7961717B2 (en) * 2005-05-12 2011-06-14 Iposi, Inc. System and methods for IP and VoIP device location determination
JP2010263489A (en) * 2009-05-08 2010-11-18 Sony Corp Communication device and communication method, computer program, and communication system
US8385333B2 (en) * 2009-06-30 2013-02-26 Intel Corporation Mechanism for clock synchronization
US9160519B1 (en) * 2014-08-25 2015-10-13 Nxp B.V. Communications with synchronization
JP2016082402A (en) * 2014-10-16 2016-05-16 富士通株式会社 Baseband processing device, radio device and radio communication system
US10082579B2 (en) 2016-04-14 2018-09-25 Qualcomm Incorporated Network aware satellite positioning system assistance information transfer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310722A (en) * 1978-11-09 1982-01-12 Bell Telephone Laboratories, Incorporated Mobile radiotelephone station two-way ranging system
US5014344A (en) * 1990-03-19 1991-05-07 Motorola, Inc. Method for synchronizing the transmissions in a simulcast transmission system
US5245634A (en) * 1992-03-23 1993-09-14 Motorola, Inc. Base-site synchronization in a communication system
US5509035A (en) * 1993-04-14 1996-04-16 Qualcomm Incorporated Mobile station operating in an analog mode and for subsequent handoff to another system

Also Published As

Publication number Publication date
WO2001003344A1 (en) 2001-01-11
JP2003503942A (en) 2003-01-28
HK1042389A1 (en) 2002-08-09
JP4482258B2 (en) 2010-06-16
AU761918B2 (en) 2003-06-12
MXPA01007086A (en) 2005-09-08
AU2509600A (en) 2001-01-22
CA2360973A1 (en) 2001-01-11
EP1145468A1 (en) 2001-10-17
TR200102405T2 (en) 2002-01-21
CN1340254A (en) 2002-03-13

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Legal Events

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B08F Application fees: dismissal - article 86 of industrial property law

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B08G Application fees: restoration
B08F Application fees: dismissal - article 86 of industrial property law

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B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2343 DE 01-12-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.

B15K Others concerning applications: alteration of classification

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: H04J 3/06; H04B 7/26; H04Q 7/38.

Ipc: H04W 56/00 (2009.01), H04B 7/26 (2006.01), H04J 3/

Ipc: H04W 56/00 (2009.01), H04B 7/26 (2006.01), H04J 3/