BRPI0811965A2 - método e equipamento para derivação de nova chave por handoff em redes sem fio - Google Patents

método e equipamento para derivação de nova chave por handoff em redes sem fio

Info

Publication number
BRPI0811965A2
BRPI0811965A2 BRPI0811965A BRPI0811965A BRPI0811965A2 BR PI0811965 A2 BRPI0811965 A2 BR PI0811965A2 BR PI0811965 A BRPI0811965 A BR PI0811965A BR PI0811965 A BRPI0811965 A BR PI0811965A BR PI0811965 A2 BRPI0811965 A2 BR PI0811965A2
Authority
BR
Brazil
Prior art keywords
equipment
wireless networks
key derivation
new handoff
handoff key
Prior art date
Application number
BRPI0811965A
Other languages
English (en)
Inventor
Michaela Vanderveen
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Priority to BR122019024787-0A priority Critical patent/BR122019024787B1/pt
Publication of BRPI0811965A2 publication Critical patent/BRPI0811965A2/pt
Publication of BRPI0811965B1 publication Critical patent/BRPI0811965B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/041—Key generation or derivation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
    • H04W12/0431—Key distribution or pre-distribution; Key agreement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
    • H04W12/0433—Key management protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/80—Wireless
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
    • H04L2463/061—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying further key derivation, e.g. deriving traffic keys from a pair-wise master key
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H04L9/0841—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving Diffie-Hellman or related key agreement protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
BRPI0811965-1A 2007-04-26 2008-04-25 Método e equipamento para derivação de nova chave por handoff em redes sem fio BRPI0811965B1 (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR122019024787-0A BR122019024787B1 (pt) 2007-04-26 2008-04-25 Método e equipamento para derivação de nova chave por handoff em redes sem fio

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US91403307P 2007-04-26 2007-04-26
US60/914,033 2007-04-26
US12/109,082 2008-04-24
US12/109,082 US10091648B2 (en) 2007-04-26 2008-04-24 Method and apparatus for new key derivation upon handoff in wireless networks
PCT/US2008/061645 WO2008134564A1 (en) 2007-04-26 2008-04-25 A method and apparatus for new key derivation upon handoff in wireless networks

Publications (2)

Publication Number Publication Date
BRPI0811965A2 true BRPI0811965A2 (pt) 2016-10-04
BRPI0811965B1 BRPI0811965B1 (pt) 2020-02-18

Family

ID=39886999

Family Applications (2)

Application Number Title Priority Date Filing Date
BR122019024787-0A BR122019024787B1 (pt) 2007-04-26 2008-04-25 Método e equipamento para derivação de nova chave por handoff em redes sem fio
BRPI0811965-1A BRPI0811965B1 (pt) 2007-04-26 2008-04-25 Método e equipamento para derivação de nova chave por handoff em redes sem fio

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BR122019024787-0A BR122019024787B1 (pt) 2007-04-26 2008-04-25 Método e equipamento para derivação de nova chave por handoff em redes sem fio

Country Status (15)

Country Link
US (3) US10091648B2 (pt)
EP (2) EP2143236B1 (pt)
JP (1) JP5209703B2 (pt)
KR (1) KR101124190B1 (pt)
CN (1) CN101669379B (pt)
AU (1) AU2008245604B2 (pt)
BR (2) BR122019024787B1 (pt)
CA (1) CA2682813C (pt)
IL (1) IL201413A0 (pt)
MX (1) MX2009011374A (pt)
MY (1) MY157777A (pt)
RU (1) RU2443063C2 (pt)
TW (1) TWI390893B (pt)
UA (1) UA93791C2 (pt)
WO (1) WO2008134564A1 (pt)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10091648B2 (en) 2007-04-26 2018-10-02 Qualcomm Incorporated Method and apparatus for new key derivation upon handoff in wireless networks
CN101400059B (zh) * 2007-09-28 2010-12-08 华为技术有限公司 一种active状态下的密钥更新方法和设备
JP5513482B2 (ja) * 2008-04-14 2014-06-04 コーニンクレッカ フィリップス エヌ ヴェ ネットワーク内のステーション分散識別方法
US8474023B2 (en) * 2008-05-30 2013-06-25 Juniper Networks, Inc. Proactive credential caching
AU2011226982B2 (en) * 2008-06-20 2012-03-15 Ntt Docomo, Inc. Mobile communication method and mobile station
JP4465015B2 (ja) * 2008-06-20 2010-05-19 株式会社エヌ・ティ・ティ・ドコモ 移動通信方法
CN101616408B (zh) * 2008-06-23 2012-04-18 华为技术有限公司 密钥衍生方法、设备及系统
US8131296B2 (en) * 2008-08-21 2012-03-06 Industrial Technology Research Institute Method and system for handover authentication
TWI410105B (zh) * 2008-12-01 2013-09-21 Inst Information Industry 無線網路架構之行動台、存取台、閘道裝置、基地台及其握手方法
US8990569B2 (en) * 2008-12-03 2015-03-24 Verizon Patent And Licensing Inc. Secure communication session setup
US8826376B2 (en) * 2009-03-10 2014-09-02 Alcatel Lucent Communication of session-specific information to user equipment from an access network
CN101902735A (zh) * 2009-05-25 2010-12-01 中兴通讯股份有限公司 基于电力线的WiMax系统的网络密钥发送方法及装置
US8861737B2 (en) * 2009-05-28 2014-10-14 Qualcomm Incorporated Trust establishment from forward link only to non-forward link only devices
US8774411B2 (en) 2009-05-29 2014-07-08 Alcatel Lucent Session key generation and distribution with multiple security associations per protocol instance
US8351451B2 (en) * 2009-08-04 2013-01-08 Sony Corporation System, apparatus and method for managing AP selection and signal quality
US8345609B2 (en) * 2009-08-04 2013-01-01 Sony Corporation System, apparatus and method for proactively re-assessing the availability and quality of surrounding channels for infrastructure operation in wireless mesh nodes
US8300578B2 (en) * 2009-08-04 2012-10-30 Sony Corporation System, apparatus and method for seamless roaming through the use of routing update messages
US8555063B2 (en) 2009-09-30 2013-10-08 Qualcomm Incorporated Method for establishing a wireless link key between a remote device and a group device
KR101700448B1 (ko) 2009-10-27 2017-01-26 삼성전자주식회사 이동 통신 시스템에서 보안 관리 시스템 및 방법
US8630416B2 (en) 2009-12-21 2014-01-14 Intel Corporation Wireless device and method for rekeying with reduced packet loss for high-throughput wireless communications
US8751803B2 (en) * 2010-05-25 2014-06-10 Ralink Technology Corporation Auto provisioning method in wireless communication network
US8737354B2 (en) * 2011-01-10 2014-05-27 Alcatel Lucent Method of data path switching during inter-radio access technology handover
US9439067B2 (en) * 2011-09-12 2016-09-06 George Cherian Systems and methods of performing link setup and authentication
KR101931601B1 (ko) * 2011-11-17 2019-03-13 삼성전자주식회사 무선 통신 시스템에서 단말과의 통신 인증을 위한 보안키 관리하는 방법 및 장치
KR101901448B1 (ko) * 2012-02-07 2018-09-21 엘지전자 주식회사 스테이션과 엑세스 포인트의 결합 방법 및 장치
JP2014033282A (ja) * 2012-08-01 2014-02-20 Ricoh Co Ltd 通信方法、無線通信装置及びプログラム
CN104584678B (zh) * 2012-08-31 2018-08-07 索尼公司 通信控制装置、终端装置、通信控制方法、程序及通信控制系统
KR101964142B1 (ko) * 2012-10-25 2019-08-07 삼성전자주식회사 무선 통신 시스템에서 다중 기지국 협력 통신에 사용하는 단말의 통신 인증을 위한 보안키를 관리하는 방법 및 장치
JP2016506152A (ja) * 2012-12-19 2016-02-25 テレフオンアクチーボラゲット エル エム エリクソン（パブル） タグ付けによるデバイスの認証
US9326144B2 (en) * 2013-02-21 2016-04-26 Fortinet, Inc. Restricting broadcast and multicast traffic in a wireless network to a VLAN
US9520939B2 (en) * 2013-03-06 2016-12-13 Qualcomm Incorporated Methods and apparatus for using visible light communications for controlling access to an area
US9712324B2 (en) * 2013-03-19 2017-07-18 Forcepoint Federal Llc Methods and apparatuses for reducing or eliminating unauthorized access to tethered data
US9426649B2 (en) * 2014-01-30 2016-08-23 Intel IP Corporation Apparatus, system and method of securing communications of a user equipment (UE) in a wireless local area network
US20160366707A1 (en) * 2014-03-24 2016-12-15 Intel IP Corporation Apparatus, system and method of securing communications of a user equipment (ue) in a wireless local area network
CN103987042A (zh) * 2014-05-08 2014-08-13 中国联合网络通信集团有限公司 一种终端的接入认证方法及接入网关
US9667625B2 (en) * 2014-07-10 2017-05-30 Ricoh Company, Ltd. Access control method, authentication method, and authentication device
US9585013B2 (en) * 2014-10-29 2017-02-28 Alcatel Lucent Generation of multiple shared keys by user equipment and base station using key expansion multiplier
US9843928B2 (en) * 2014-10-30 2017-12-12 Motorola Solutions, Inc. Method and apparatus for connecting a communication device to a deployable network without compromising authentication keys
US10045261B2 (en) 2014-12-10 2018-08-07 Intel Corporation Methods, systems, and devices for handover in multi-cell integrated networks
CN104540133B (zh) * 2015-01-16 2018-10-26 北京智谷睿拓技术服务有限公司 接入控制方法及接入控制装置
US9769661B2 (en) * 2015-04-06 2017-09-19 Qualcomm, Incorporated Wireless network fast authentication / association using re-association object
US11172415B2 (en) * 2015-11-30 2021-11-09 Time Warner Cable Enterprises Llc Wireless communication management and handoffs
US10004014B2 (en) * 2015-11-30 2018-06-19 Telefonaktiebolaget Lm Ericsson (Publ) Wireless communication device as context forwarding entity
US10681541B2 (en) * 2016-04-29 2020-06-09 Nokia Technologies Oy Security key usage across handover that keeps the same wireless termination
CN107040922B (zh) * 2016-05-05 2019-11-26 腾讯科技（深圳）有限公司 无线网络连接方法、装置及系统
US10630659B2 (en) * 2016-09-30 2020-04-21 Nicira, Inc. Scalable security key architecture for network encryption
US10587401B2 (en) * 2017-04-03 2020-03-10 Salesforce.Com, Inc. Secure handling of customer-supplied encryption secrets
FR3077175A1 (fr) * 2018-01-19 2019-07-26 Orange Technique de determination d'une cle destinee a securiser une communication entre un equipement utilisateur et un serveur applicatif
CN109462875B (zh) * 2019-01-16 2020-10-27 展讯通信（上海）有限公司 无线漫游方法、接入点装置以及移动台
CN112399412B (zh) 2019-08-19 2023-03-21 阿里巴巴集团控股有限公司 会话建立的方法及装置、通信系统
US11979376B2 (en) * 2020-06-30 2024-05-07 Microsoft Technology Licensing, Llc Method and system of securing VPN communications
KR20220084601A (ko) * 2020-12-14 2022-06-21 삼성전자주식회사 차세대 이동 통신 시스템에서 ho를 고려한 pki기반 as 인증 방법
CN114915964B (zh) * 2021-01-29 2025-09-16 华为技术有限公司 一种密钥协商方法及电子设备
CN116709307A (zh) * 2023-06-27 2023-09-05 立讯电子科技（昆山）有限公司 一种通话加密方法及装置

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933971A (en) 1989-03-14 1990-06-12 Tandem Computers Incorporated Method for encrypting transmitted data using a unique key
US7257836B1 (en) 2000-04-24 2007-08-14 Microsoft Corporation Security link management in dynamic networks
WO2003092218A1 (en) 2002-04-26 2003-11-06 Thomson Licensing S.A. Transitive authentication authorization accounting in interworking between access networks
US7529933B2 (en) * 2002-05-30 2009-05-05 Microsoft Corporation TLS tunneling
GB0226661D0 (en) 2002-11-15 2002-12-24 Koninkl Philips Electronics Nv Asynchronous communication system
US7350077B2 (en) 2002-11-26 2008-03-25 Cisco Technology, Inc. 802.11 using a compressed reassociation exchange to facilitate fast handoff
US7624270B2 (en) * 2002-11-26 2009-11-24 Cisco Technology, Inc. Inter subnet roaming system and method
US7263357B2 (en) 2003-01-14 2007-08-28 Samsung Electronics Co., Ltd. Method for fast roaming in a wireless network
US20040236939A1 (en) * 2003-02-20 2004-11-25 Docomo Communications Laboratories Usa, Inc. Wireless network handoff key
CN1262126C (zh) * 2003-07-01 2006-06-28 株式会社日立制作所 无线局域网的越区切换方法
EP1531645A1 (en) * 2003-11-12 2005-05-18 Matsushita Electric Industrial Co., Ltd. Context transfer in a communication network comprising plural heterogeneous access networks
WO2006016260A2 (en) * 2004-08-11 2006-02-16 Nokia Corporation Apparatus, and associated method, for facilitating secure, make-before-break hand-off in a radio communication system
US7236477B2 (en) * 2004-10-15 2007-06-26 Motorola, Inc. Method for performing authenticated handover in a wireless local area network
US8281132B2 (en) 2004-11-29 2012-10-02 Broadcom Corporation Method and apparatus for security over multiple interfaces
MX2007009063A (es) 2005-01-27 2007-10-02 Interdigital Tech Corp Metodo y sistema para derivar una clave de encriptacion usando aleatoriedad de union no compartida por otros.
FI20050393A0 (fi) * 2005-04-15 2005-04-15 Nokia Corp Avainmateriaalin vaihto
US7873352B2 (en) * 2005-05-10 2011-01-18 Hewlett-Packard Company Fast roaming in a wireless network using per-STA pairwise master keys shared across participating access points
US8621201B2 (en) * 2005-06-29 2013-12-31 Telecom Italia S.P.A. Short authentication procedure in wireless data communications networks
US7602918B2 (en) * 2005-06-30 2009-10-13 Alcatel-Lucent Usa Inc. Method for distributing security keys during hand-off in a wireless communication system
CN101243719B (zh) * 2005-07-06 2012-10-17 诺基亚公司 安全的会话密钥上下文
US7483409B2 (en) * 2005-12-30 2009-01-27 Motorola, Inc. Wireless router assisted security handoff (WRASH) in a multi-hop wireless network
US8023478B2 (en) * 2006-03-06 2011-09-20 Cisco Technology, Inc. System and method for securing mesh access points in a wireless mesh network, including rapid roaming
US8948395B2 (en) * 2006-08-24 2015-02-03 Qualcomm Incorporated Systems and methods for key management for wireless communications systems
US10091648B2 (en) 2007-04-26 2018-10-02 Qualcomm Incorporated Method and apparatus for new key derivation upon handoff in wireless networks

Also Published As

Publication number Publication date
IL201413A0 (en) 2010-05-31
BR122019024787B1 (pt) 2020-06-16
EP2184933B1 (en) 2018-07-25
RU2009143679A (ru) 2011-06-10
KR101124190B1 (ko) 2012-05-23
US10085148B2 (en) 2018-09-25
EP2143236B1 (en) 2017-02-15
MY157777A (en) 2016-07-29
CN101669379B (zh) 2014-06-25
US10412583B2 (en) 2019-09-10
US10091648B2 (en) 2018-10-02
EP2184933A3 (en) 2013-10-09
UA93791C2 (ru) 2011-03-10
US20190028889A1 (en) 2019-01-24
MX2009011374A (es) 2009-11-09
TW200910826A (en) 2009-03-01
US20170339558A1 (en) 2017-11-23
AU2008245604B2 (en) 2011-02-10
RU2443063C2 (ru) 2012-02-20
HK1140353A1 (en) 2010-10-08
BRPI0811965B1 (pt) 2020-02-18
WO2008134564A1 (en) 2008-11-06
AU2008245604A1 (en) 2008-11-06
EP2143236A1 (en) 2010-01-13
CN101669379A (zh) 2010-03-10
KR20100007913A (ko) 2010-01-22
EP2184933A2 (en) 2010-05-12
JP2010525764A (ja) 2010-07-22
CA2682813A1 (en) 2008-11-06
US20080267407A1 (en) 2008-10-30
JP5209703B2 (ja) 2013-06-12
CA2682813C (en) 2014-03-11
TWI390893B (zh) 2013-03-21

Similar Documents

Publication Publication Date Title
BRPI0812554A2 (pt) métodos e equipamento para fornecer hierarquia de chave pmip em redes de comunicação sem fio
IL201413A0 (en) A method and apparatus for new key derivation upon handoff in wireless networks
BRPI0821989A2 (pt) método e equipamento para sincronização e detecção em sistemas de comunicação sem fio
BRPI0917436A2 (pt) método e equipamento para tratar intervalos de medição em redes sem fio
BRPI0916980A2 (pt) método e aparelho para iniciar procedimento de acesso aleatório em redes sem fio
BRPI1011591A2 (pt) métodos e aparelho para registro com redes externas em ambientes em rede sem fio
BRPI0909231A2 (pt) método e equipamento para gerenciamento de recursos em um sistema de comunicação sem fio
BRPI0919784A2 (pt) método e equipamento para realimentação de canal por múltipla codificação de descrição em um sistema de comunicação sem fio
BRPI0822820A2 (pt) Método e aparelhagem para identificação e retransmissão de dados multidifundidos em redes de trabalho sem fio em área local
BRPI0815082A2 (pt) Equipamento e método para reserva de canal em sistemas de comunicação sem fio.
BRPI1010605A2 (pt) sistemas, equipamentos e métodos para gerenciamento de interferência em canais de downlink em sistemas de comunicação sem fio
BRPI1009895A2 (pt) sistemas, aparelho e métodos para gerenciamento interferência em redes sem fio
BRPI0822834A2 (pt) Aparelhagem para solicitação de reconhecimento e transmissão de reconhecimento de dados de multidifusão em redes de trabalho sem fio em área local
BRPI0912737A2 (pt) método e aparelho para utilização de figura de ruido virtual em uma rede de comunicação sem fio
BRPI1013140A2 (pt) método e aparelho para procedimento de acesso em um sistema de comunicação sem fio
BRPI0822996A2 (pt) Método e aparelho para controle de potência de transmissão em redes sem fio
BRPI0816602A2 (pt) método e aparelho de seleção de combinação de formatos de transporte aprimorada em comunicações sem fio.
BRPI0822831A2 (pt) Aparelho para transmissões multicast em redes de área local sem fio
BRPI0920389A2 (pt) métodos e equipamento para seleção de sistema em aparelho sem fio multimodo
BRPI1013725A2 (pt) métodos e aparelhos para descobrir informações de autenticação em um ambiente de rede sem fio
BRPI0907891A2 (pt) Métodos e aparelhos para suportar múltiplas versões de protocolo de posicionamento em redes de comunicação sem fio
BRPI0906756A2 (pt) Método e equipamento para identificação de canal em um sistema de comunicação sem fio
BRPI0908125A2 (pt) Método e aparelho para operar um equipamento de usuário em um sistema de comunicações móvel.
BRPI1013912A2 (pt) sistemas, equipamentos e métodos para facilitar serviço de chamada de emergência em sistemas de comunicação sem fio
PT2209272E (pt) Dispositivos e métodos para o aumento de capacidade em comunicações sem fios

Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04L 12/22 , H04W 12/04 , H04W 92/10

Ipc: H04L 9/08 (1990.01), H04W 12/04 (2009.01), H04W 8/

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 18/02/2020, OBSERVADAS AS CONDICOES LEGAIS.