AR025263A1 - Metodo para determinar un grupo de codigos de aleatorizacion para una senal recibida en un sistema de comunicaciones digitales, metodo para comunicar una identidad de un grupo de codigos de aleatorizacion correspondientes a una senal transmitida en un sistema de comunicaciones digitales, sistema de - Google Patents

Metodo para determinar un grupo de codigos de aleatorizacion para una senal recibida en un sistema de comunicaciones digitales, metodo para comunicar una identidad de un grupo de codigos de aleatorizacion correspondientes a una senal transmitida en un sistema de comunicaciones digitales, sistema de

Info

Publication number
AR025263A1
AR025263A1 ARP990104117A ARP990104117A AR025263A1 AR 025263 A1 AR025263 A1 AR 025263A1 AR P990104117 A ARP990104117 A AR P990104117A AR P990104117 A ARP990104117 A AR P990104117A AR 025263 A1 AR025263 A1 AR 025263A1
Authority
AR
Argentina
Prior art keywords
group
random codes
identity
communicating
determining
Prior art date
Application number
ARP990104117A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22467212&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR025263(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR025263A1 publication Critical patent/AR025263A1/es

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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

Métodos y aparatos para sincronizar un transmisor y un receptor se basan en secuencias ortogonales que tienen propiedades de correlacion optimizadas. Eltransmisor puede generar versiones signadas de las secuencias S-Hadamard que se obtienenaleatoriz ando por posicion un conjunto de secuencias Walsh-Hadamardcon una secuencia especial que tiene elementos complejos de magnitud constante. El receptor estima una localizacion temporal e identidad de secuencia de unaversion recibida de lasenal de sin nc ronizacion.
ARP990104117A 1998-08-17 1999-08-17 Metodo para determinar un grupo de codigos de aleatorizacion para una senal recibida en un sistema de comunicaciones digitales, metodo para comunicar una identidad de un grupo de codigos de aleatorizacion correspondientes a una senal transmitida en un sistema de comunicaciones digitales, sistema de AR025263A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/135,247 US6526091B1 (en) 1998-08-17 1998-08-17 Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties

Publications (1)

Publication Number Publication Date
AR025263A1 true AR025263A1 (es) 2002-11-20

Family

ID=22467212

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990104117A AR025263A1 (es) 1998-08-17 1999-08-17 Metodo para determinar un grupo de codigos de aleatorizacion para una senal recibida en un sistema de comunicaciones digitales, metodo para comunicar una identidad de un grupo de codigos de aleatorizacion correspondientes a una senal transmitida en un sistema de comunicaciones digitales, sistema de

Country Status (15)

Country Link
US (1) US6526091B1 (es)
EP (1) EP1105991B1 (es)
JP (1) JP4230111B2 (es)
KR (1) KR100691603B1 (es)
CN (1) CN1143467C (es)
AR (1) AR025263A1 (es)
AU (1) AU772280B2 (es)
BR (1) BR9913041B1 (es)
CA (1) CA2338560C (es)
DE (1) DE69936455C5 (es)
MY (1) MY125162A (es)
RU (1) RU2234196C2 (es)
TW (1) TW435012B (es)
WO (1) WO2000010277A1 (es)
ZA (1) ZA200100769B (es)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19840232C1 (de) * 1998-09-03 1999-10-28 Siemens Ag Verfahren und Funk-Kommunikationssystem zur Synchronisation von Teilnehmerstationen
JP3411836B2 (ja) 1998-10-30 2003-06-03 松下電器産業株式会社 同期捕捉装置及び同期捕捉方法
US6973057B1 (en) * 1999-01-29 2005-12-06 Telefonaktiebolaget L M Ericsson (Publ) Public mobile data communications network
KR100287896B1 (ko) * 1999-02-06 2001-04-16 서평원 이동 통신 시스템에서 셀 탐색 방법
US7643540B2 (en) * 1999-03-15 2010-01-05 Lg Electronics Inc. Pilot signals for synchronization and/or channel estimation
KR100294711B1 (ko) * 1999-03-15 2001-07-12 서평원 최적의 파일럿 심볼을 이용한 프레임 동기 방법
US6891815B1 (en) * 1999-03-15 2005-05-10 Young-Joon Song Pilot signals for synchronization and/or channel estimation
US6721299B1 (en) * 1999-03-15 2004-04-13 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US6987746B1 (en) * 1999-03-15 2006-01-17 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US7496132B2 (en) * 1999-03-15 2009-02-24 Kg Electronics Inc. Pilot signals for synchronization and/or channel estimation
KR100290678B1 (ko) * 1999-04-24 2001-05-15 윤종용 씨디엠에이 이동통신시스템의 셀탐색 장치 및 방법
KR100421142B1 (ko) * 1999-04-28 2004-03-04 삼성전자주식회사 이동통신시스템의 셀탐색 장치 및 방법
US6958989B1 (en) * 1999-05-19 2005-10-25 Interdigital Technology Corporation Uplink scrambling code assignment for a random access channel
CA2637810C (en) * 1999-05-28 2010-02-02 Interdigital Technology Corporation Cell search procedure for time division duplex communication systems using code division multiple access
US6717930B1 (en) * 2000-05-22 2004-04-06 Interdigital Technology Corporation Cell search procedure for time division duplex communication systems using code division multiple access
US7103085B1 (en) 1999-06-18 2006-09-05 Texas Instruments Incorporated Wireless communications system with secondary synchronization code based on values in primary synchronization code
EP1112632B1 (en) * 1999-07-07 2005-04-13 Samsung Electronics Co., Ltd. Apparatus and method for generating scrambling code in umts mobile communication system
CN1132391C (zh) * 1999-08-09 2003-12-24 华为技术有限公司 一种实现移动通信系统的导频同步信道的方法
KR100429545B1 (ko) * 1999-08-17 2004-04-28 삼성전자주식회사 이동통신 시스템의 스크램블링 부호의 식별자 통신방법
US6891882B1 (en) * 1999-08-27 2005-05-10 Texas Instruments Incorporated Receiver algorithm for the length 4 CFC
JP3438669B2 (ja) * 1999-09-14 2003-08-18 日本電気株式会社 移動通信端末装置及びその制御方法並びにその制御プログラムを記録した記録媒体
US6996162B1 (en) * 1999-10-05 2006-02-07 Texas Instruments Incorporated Correlation using only selected chip position samples in a wireless communication system
FR2803467B1 (fr) 1999-12-30 2002-02-08 Mitsubishi Electric Inf Tech Methode d'estimation d'un canal de transmission ou de telecommunication
JP3581072B2 (ja) * 2000-01-24 2004-10-27 株式会社エヌ・ティ・ティ・ドコモ チャネル構成方法及びその方法を利用する基地局
US7069590B1 (en) * 2000-02-17 2006-06-27 Microsoft Corporation System and method for protecting data streams in hardware components
US6661834B1 (en) 2000-04-17 2003-12-09 Rf Micro Devices, Inc. Carrier recovery for spread spectrum communications
US6693954B1 (en) 2000-04-17 2004-02-17 Rf Micro Devices, Inc. Apparatus and method of early-late symbol tracking for a complementary code keying receiver
US6674818B1 (en) * 2000-04-17 2004-01-06 Rf Micro Devices, Inc. Reduced complexity decision circuitry
ATE261231T1 (de) * 2000-05-10 2004-03-15 Mitsubishi Electric Inf Tech Verfahren zur zuweisung von sekundärsynchronisationskodes zu einer basisstation eines mobilkommunikationssystems
US8576754B2 (en) 2000-05-22 2013-11-05 Interdigital Technology Corporation TDD base station for code group synchronization
US7400654B2 (en) * 2000-05-23 2008-07-15 Siemens Aktiengesellschaft Method for synchronizing a receiver with a transmitter
US7103061B1 (en) * 2000-06-26 2006-09-05 Koninklijke Philips Electronics N.V. Synchronization codeword for interference reduction in a CDMA system
US8165246B1 (en) * 2000-08-28 2012-04-24 Alcatel Lucent Training sequence for low latency LMS implementation
US8374218B2 (en) * 2000-12-05 2013-02-12 Google Inc. Combining signals with a shuffled-hadamard function
US8385470B2 (en) * 2000-12-05 2013-02-26 Google Inc. Coding a signal with a shuffled-Hadamard function
US7236508B2 (en) * 2001-02-05 2007-06-26 The Directv Group, Inc. Application of complex codes to maximize feeder link utilization
US20030053622A1 (en) * 2001-09-20 2003-03-20 Aiden Bruen Method for the construction of hash functions based on sylvester matrices, balanced incomplete block designs and error-correcting codes
RU2298876C2 (ru) * 2001-11-15 2007-05-10 Нокиа Корпорейшн Способ компактного представления сигнализации о мультикодах в системах связи
US7075885B2 (en) * 2001-12-03 2006-07-11 Motorola, Inc. Method for assigning variable-length walsh codes for code division multiple access communications systems
US7065064B2 (en) * 2001-12-20 2006-06-20 Interdigital Technology Corporation Cell search using peak quality factors
EP1590974A4 (en) * 2003-01-23 2006-09-13 Interdigital Tech Corp EXCLUSION OF INAPPROPRIATE CELLS IN WIRELESS COMMUNICATION SYSTEMS
US8682386B2 (en) * 2003-04-07 2014-03-25 Fujitsu Limited Dual-mode system and dual-mode wireless terminal
KR101022066B1 (ko) 2003-05-17 2011-03-17 엘지전자 주식회사 이동통신 시스템에서의 하향링크 제어채널 구조 및 이를이용한 시간-코드 할당방법
US7394801B2 (en) * 2003-06-17 2008-07-01 Qisda Corporation Cell search method suitable for initial cell search and target cell search
US7684472B2 (en) * 2003-07-02 2010-03-23 Thomson Licensing Method and apparatus for frequency-robust detection of a wideband code division multiple access secondary synchronization channel
US7463618B2 (en) * 2003-08-04 2008-12-09 Thomson Licensing Frame synchronization in a universal mobile telephone system receiver
TWM246707U (en) * 2003-08-26 2004-10-11 Behavior Tech Computer Corp Wireless man machine interface device
RU2376717C2 (ru) * 2005-02-17 2009-12-20 Самсунг Электроникс Ко., Лтд. Блок корреляции для использования в определенных программным обеспечением системах радиосвязи и способ для его осуществления
US7587660B2 (en) * 2005-04-22 2009-09-08 Kansas State University Research Foundation Multiple-access code generation
RU2290758C1 (ru) * 2005-04-25 2006-12-27 Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" Способ передачи дискретной информации в радиолинии со скачкообразной перестройкой рабочей частоты
US8064424B2 (en) 2005-07-22 2011-11-22 Qualcomm Incorporated SDMA for WCDMA
CN101218845B (zh) * 2005-07-29 2013-02-27 松下电器产业株式会社 多载波通信中的无线通信基站装置、无线通信移动台装置和导频信号序列分配方法
US7599444B2 (en) 2005-09-02 2009-10-06 Alcatel-Lucent Usa Inc. Coding in a MIMO communication system
US8102900B2 (en) * 2006-04-07 2012-01-24 Broadcom Corporation Method and apparatus for efficient gold code generation and management in WCDMA systems
RU2396714C1 (ru) * 2006-04-12 2010-08-10 Эл Джи Электроникс Инк. Способ распределения опорных сигналов в системе с многими входами и многими выходами (mimo)
WO2008037114A1 (en) 2006-09-25 2008-04-03 Huawei Technologies Co., Ltd. Information carrying synchronization code and method for frame timing synchronization
WO2008038790A1 (en) * 2006-09-29 2008-04-03 Panasonic Corporation Sequence allocating method and sequence allocating apparatus
EP2087605B1 (en) * 2006-10-03 2012-03-21 QUALCOMM Incorporated Method and apparatus for processing primary and secondary synchronization signals for wireless communication
US8144731B2 (en) * 2006-10-24 2012-03-27 Qualcomm Incorporated Control channel signaling in wireless communications
DE102007018032B4 (de) * 2007-04-17 2010-11-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Erzeugung dekorrelierter Signale
BRPI0810797B1 (pt) 2007-04-30 2020-10-13 Nokia Solutions And Networks Oy método para comunicação sem fio e aparelho para comunicação sem fio
PL2892170T3 (pl) 2007-06-15 2019-10-31 Optis Wireless Technology Llc Urządzenie do komunikacji bezprzewodowej i sposób rozprzestrzeniania sygnału odpowiedzi
US7801231B2 (en) * 2007-09-27 2010-09-21 Intel Corporation Preamble techniques for communications networks
ATE524978T1 (de) * 2008-07-30 2011-10-15 Symrise Ag Zusammensetzung zur reduzierung des nacl-gehaltes in lebensmitteln
JP2010041652A (ja) * 2008-08-08 2010-02-18 Fujitsu Ltd 端末装置、基地局装置検出方法、無線通信システム、及び基地局装置
RU2480933C2 (ru) 2008-08-20 2013-04-27 Квэлкомм Инкорпорейтед Muros-модуляция с использованием линейных комбинаций в основной полосе частот с линейным формированием гауссовых импульсов для двух пользователей в одном временном интервале, используемая удаленными станциями без поддержки функции darp и с поддержкой функции darp
WO2010021635A1 (en) 2008-08-20 2010-02-25 Qualcomm Incorporated Power control method for a geran system to increase geran network capacity
US7948332B2 (en) * 2008-09-30 2011-05-24 Raytheon Company N-channel multiplexer
RU2510133C2 (ru) * 2008-10-30 2014-03-20 Панасоник Корпорэйшн Устройство радиосвязи и способ радиосвязи
EP2401847B1 (en) * 2009-02-27 2019-09-25 Nokia Solutions and Networks Oy Apparatus and method for single user multiple input multiple output communication employing cyclic shifts
JP5300073B2 (ja) * 2009-08-28 2013-09-25 国立大学法人山口大学 近似同期ｃｄｍａ通信方式
CN102025390B (zh) * 2010-12-16 2013-03-20 大唐移动通信设备有限公司 一种扩频通信控制方法、装置及系统
RU2485592C1 (ru) * 2012-03-07 2013-06-20 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" Способ формирования целочисленных неортогональных декоррелирующих матриц заданных размеров и устройство для его осуществления
RU2509437C1 (ru) * 2012-07-17 2014-03-10 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" Способ формирования целочисленных ортогональных декоррелирующих матриц заданных размеров для прямого и обратного декоррелирующего преобразования видеоизображений и устройство для его осуществления
DK178764B1 (en) * 2015-06-19 2017-01-09 Itu Business Dev As Computer-implemented method for conducting a search without the use of signatures
CN107947892B (zh) * 2017-12-27 2019-08-06 西安科锐盛创新科技有限公司 一种基于semi-bent函数的正交序列集构造方法
US11728918B2 (en) * 2020-04-10 2023-08-15 Qualcomm Incorporated Multi-bit payload transmission with orthogonal sequences
WO2025184233A1 (en) * 2024-02-26 2025-09-04 Apple Inc. Complementary sequence overlay for ook-based low-power wake-up signal

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
RU2014738C1 (ru) * 1991-02-18 1994-06-15 Военная академия связи Способ передачи и приема информации с кодовым уплотнением сигналов
US5357454A (en) 1991-07-25 1994-10-18 Ericsson Ge Mobile Communications Holding, Inc. Fast walsh transform processor
US5159608A (en) * 1991-08-28 1992-10-27 Falconer David D Method and apparatus for using orthogonal coding in a communication system
US5353352A (en) 1992-04-10 1994-10-04 Ericsson Ge Mobile Communications Inc. Multiple access coding for radio communications
US5550809A (en) 1992-04-10 1996-08-27 Ericsson Ge Mobile Communications, Inc. Multiple access coding using bent sequences for mobile radio communications
US5353332A (en) 1992-09-16 1994-10-04 Ericsson Ge Mobile Communications Inc. Method and apparatus for communication control in a radiotelephone system
US5631929A (en) 1995-05-09 1997-05-20 Unisys Corporation Electronic transmitter having a digital combiner circuit for transmitting multiple digital input signals simultaneously
FI955113L (fi) 1995-10-26 1997-04-27 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä, lähetin ja vastaanotin
JP3409628B2 (ja) 1996-06-19 2003-05-26 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａ通信方法およびグループ拡散変調器
US5768307A (en) 1996-09-13 1998-06-16 Telefonaktiebolaget Lm Ericsson Coherent demodulation with decision-directed channel estimation for digital communication
WO1998020639A1 (en) 1996-11-07 1998-05-14 Matsushita Electric Industrial Co., Ltd. Code generating method and code selecting method
SE9700212L (sv) * 1997-01-24 1998-07-25 Ericsson Telefon Ab L M Förfarande och arrangemang i ett kommunikationssystem
FI970772A7 (fi) 1997-02-24 1998-08-25 Nokia Corp Kanava-allokointi radiokaistalla
US6215762B1 (en) * 1997-07-22 2001-04-10 Ericsson Inc. Communication system and method with orthogonal block encoding

Also Published As

Publication number Publication date
EP1105991B1 (en) 2007-07-04
DE69936455T2 (de) 2008-03-06
TW435012B (en) 2001-05-16
KR100691603B1 (ko) 2007-03-09
US6526091B1 (en) 2003-02-25
AU5662399A (en) 2000-03-06
DE69936455D1 (de) 2007-08-16
CN1143467C (zh) 2004-03-24
ZA200100769B (en) 2001-08-08
EP1105991A1 (en) 2001-06-13
BR9913041A (pt) 2001-05-08
AU772280B2 (en) 2004-04-22
BR9913041B1 (pt) 2013-05-28
MY125162A (en) 2006-07-31
RU2234196C2 (ru) 2004-08-10
WO2000010277A1 (en) 2000-02-24
JP2002523922A (ja) 2002-07-30
CA2338560C (en) 2008-03-25
DE69936455C5 (de) 2021-07-29
KR20010072762A (ko) 2001-07-31
JP4230111B2 (ja) 2009-02-25
CA2338560A1 (en) 2000-02-24
CN1323474A (zh) 2001-11-21

Similar Documents

Publication Publication Date Title
AR025263A1 (es) Metodo para determinar un grupo de codigos de aleatorizacion para una senal recibida en un sistema de comunicaciones digitales, metodo para comunicar una identidad de un grupo de codigos de aleatorizacion correspondientes a una senal transmitida en un sistema de comunicaciones digitales, sistema de
EP4546675A3 (en) Physical channel and method for transmitting and receiving signals in wireless communication system, and apparatus using same
BRPI0408757A (pt) método e sistema para sincronização em um receptor de chaveamento de deslocamento de freqüência
DK1362452T3 (da) Metode og apparat til tilvejebringelse af autentificering i et kommunikationssystem
RU2009111226A (ru) Способ и устройство для передачи сетевых идентификаторов в системе связи
AR033339A2 (es) Un aparato de sincronizacion rapida para ser utilizado en un sistema de comunicacion de banda ancha
EP0954124A3 (en) CDMA cellular communication system and method of detecting spreading code
SE9702891L (sv) Kommunikationssystem med spritt spektrum
BG64661B1 (bg) Метод за синхронизиране на несинхронизирана базова станция с помощта на сигнали, предавани от подвижна станция, която е в съобщителна връзка със синхронизирана базова станция
ATE440295T1 (de) Vereinfachter empfänger mit rotator zur positionsbestimmung
MY123539A (en) Method and apparatus for efficient synchronization in spread spectrum communications
BR9812033B1 (pt) processo para transmissão de código de sincronização, sistema de comunicação de acesso múltiplo por divisão de código, transmissor de estação base, e, receptor de estação móvel.
DK1006691T3 (da) Fremgangsmåde og apparatur til tilpasning af bus-opererende aggregater og den af en sendende station anvendte dataoverförselsprotokol
ITMI20030225A1 (it) Apparecchiatura e procedimento per trasmettere/ricevere informazione di gruppo hs-scch di servizio in un sistema di comunicazione hsdpa.
KR970701464A (ko) 씨디엠에이 전송 시스템의 확산 스펙트럼 코드를 초기 동기시키기 위한 장치 및 방법(device and method for initially synchronizing spread-spectrum code of cdma transmission system)
RU2008132421A (ru) Мобильная станция, базовая станция, система и способ связи
ATE531022T1 (de) Drahtloses aktivierungssystem, verfahren und einrichtung
DK1513366T3 (da) Fremgangsmåde og system til lokalisering af en mobilabonnent i et CDMA-kommunikationssystem
DK1112510T3 (da) Modtager til udförelse af positionslokalisering med en effektiv rotator
PE20000588A1 (es) Sistemas y metodos para adquirir un canal de control
ATE468674T1 (de) Empfangsvorrichtung und synchronisationsverfahren für ein digitales nachrichtenübertragungssystem
MX2021009650A (es) Dispositivo terminal, dispositivo de red y metodos en los mismos.
ES2154617T1 (es) Dispositivo y metodo para la comunicacion entre la estacion base y la unidad de abonado en un sistema de comunicacion cdma.
AR037088A1 (es) Un sistema de telefono inalambrico de uno o muchos, un metodo para permitir la comunicacion de uno o muchos entre por lo menos un telefono inalambrico transmisor y por lo menos dos telefonos inalambricos receptores y un sistema de telefono para utilizar en una sesion de comunicacion.
BR0006151A (pt) Aparelho e método para geração de uma palavra sync e transmissão e recepção da palavra sync em um sistema de comunicação w-cdma

Legal Events

Date Code Title Description
FG Grant, registration