CN1487752A - 同步服务gprs支持节点和网关gprs支持节点的系统和方法 - Google Patents
同步服务gprs支持节点和网关gprs支持节点的系统和方法 Download PDFInfo
- Publication number
- CN1487752A CN1487752A CNA031543286A CN03154328A CN1487752A CN 1487752 A CN1487752 A CN 1487752A CN A031543286 A CNA031543286 A CN A031543286A CN 03154328 A CN03154328 A CN 03154328A CN 1487752 A CN1487752 A CN 1487752A
- Authority
- CN
- China
- Prior art keywords
- ntp server
- ntp
- ggsn
- sgsn
- change
- 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.)
- Granted
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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
- 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
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
-
- 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
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2002-0048382A KR100431700B1 (ko) | 2002-08-16 | 2002-08-16 | 에스지에스엔과 지지에스엔간의 시각 동기화 시스템 및 방법 |
KR48382/2002 | 2002-08-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1487752A true CN1487752A (zh) | 2004-04-07 |
CN1248517C CN1248517C (zh) | 2006-03-29 |
Family
ID=32866823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN03154328.6A Expired - Fee Related CN1248517C (zh) | 2002-08-16 | 2003-08-15 | 同步服务gprs支持节点和网关gprs支持节点的系统和方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7339886B2 (zh) |
KR (1) | KR100431700B1 (zh) |
CN (1) | CN1248517C (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100397945C (zh) * | 2004-11-19 | 2008-06-25 | 华为技术有限公司 | 空闲模式下防止消息重放攻击的方法 |
CN101449520B (zh) * | 2006-05-19 | 2012-05-30 | 讯腾有限公司 | 网络时间协议精确时间戳标记服务 |
CN106453560A (zh) * | 2016-10-14 | 2017-02-22 | 北京小米移动软件有限公司 | 时间获取方法及装置 |
CN110336636A (zh) * | 2019-07-26 | 2019-10-15 | 新华三技术有限公司成都分公司 | 时间同步方法、装置及基板管理控制器 |
CN111811835A (zh) * | 2020-07-14 | 2020-10-23 | 中国第一汽车股份有限公司 | 智能网联汽车公开道路试验场景故障数据自动化处理方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005222368A (ja) * | 2004-02-06 | 2005-08-18 | Hitachi Ltd | ストレージシステム |
KR101043135B1 (ko) * | 2004-03-06 | 2011-06-20 | 엘지에릭슨 주식회사 | 소프트스위치의 프로세서간 시각관리 방법 |
US8930579B2 (en) * | 2004-09-13 | 2015-01-06 | Keysight Technologies, Inc. | System and method for synchronizing operations of a plurality of devices via messages over a communication network |
WO2016205455A1 (en) * | 2015-06-17 | 2016-12-22 | Thomson Licensing | System and method for setting time and date in a device without access to network time protocol |
CN107181555B (zh) * | 2017-07-17 | 2019-03-19 | 潍坊安盾软件科技有限公司 | 利用扩展的ntp协议代替ddns实现互联网与局域网内设备交互的方法 |
US10868828B2 (en) * | 2018-03-19 | 2020-12-15 | Fortinet, Inc. | Mitigation of NTP amplification and reflection based DDoS attacks |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07231475A (ja) * | 1994-02-17 | 1995-08-29 | Fujitsu Ltd | プロセッサ間の立ち上がり同期方法及びその同期装置 |
FI113223B (fi) * | 1995-10-23 | 2004-03-15 | Nokia Corp | Menetelmä, laite ja televerkko törmäysten välttämiseksi radioliikenteessä |
FI106831B (fi) * | 1998-01-14 | 2001-04-12 | Nokia Networks Oy | Pääsyn kontrollointimenetelmä matkaviestinjärjestelmää varten |
US6195705B1 (en) * | 1998-06-30 | 2001-02-27 | Cisco Technology, Inc. | Mobile IP mobility agent standby protocol |
FI109321B (fi) * | 1999-06-10 | 2002-06-28 | Nokia Corp | Menetelmä ja järjestely nopean solunvaihdon toteuttamiseksi pakettikytkentäisessä solukkoradiojärjestelmässä |
US6466556B1 (en) * | 1999-07-23 | 2002-10-15 | Nortel Networks Limited | Method of accomplishing handover of packet data flows in a wireless telecommunications system |
US7290063B2 (en) * | 2001-01-10 | 2007-10-30 | Nokia Corporation | Relocating context information in header compression |
KR100440717B1 (ko) * | 2001-11-01 | 2004-07-15 | 유티스타콤코리아 유한회사 | 무선통신망에서 제어 메시지와 사용자 패킷간의 동기화 방법 |
KR100428720B1 (ko) * | 2001-12-14 | 2004-04-28 | 삼성전자주식회사 | 무선통신 시스템에서 에스지에스엔의 로컬 타이머 메시지처리 장치 및 그 방법 |
-
2002
- 2002-08-16 KR KR10-2002-0048382A patent/KR100431700B1/ko not_active IP Right Cessation
-
2003
- 2003-08-15 US US10/641,298 patent/US7339886B2/en not_active Expired - Fee Related
- 2003-08-15 CN CN03154328.6A patent/CN1248517C/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100397945C (zh) * | 2004-11-19 | 2008-06-25 | 华为技术有限公司 | 空闲模式下防止消息重放攻击的方法 |
CN101449520B (zh) * | 2006-05-19 | 2012-05-30 | 讯腾有限公司 | 网络时间协议精确时间戳标记服务 |
CN106453560A (zh) * | 2016-10-14 | 2017-02-22 | 北京小米移动软件有限公司 | 时间获取方法及装置 |
CN110336636A (zh) * | 2019-07-26 | 2019-10-15 | 新华三技术有限公司成都分公司 | 时间同步方法、装置及基板管理控制器 |
CN110336636B (zh) * | 2019-07-26 | 2021-05-07 | 新华三技术有限公司成都分公司 | 时间同步方法、装置及基板管理控制器 |
CN111811835A (zh) * | 2020-07-14 | 2020-10-23 | 中国第一汽车股份有限公司 | 智能网联汽车公开道路试验场景故障数据自动化处理方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20040016137A (ko) | 2004-02-21 |
US20040190530A1 (en) | 2004-09-30 |
CN1248517C (zh) | 2006-03-29 |
US7339886B2 (en) | 2008-03-04 |
KR100431700B1 (ko) | 2004-05-17 |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: LG- NORTEL CO., LTD. Free format text: FORMER OWNER: LG ELECTRONIC CO., LTD. Effective date: 20061124 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20061124 Address after: Seoul, South Kerean Patentee after: LG Nortel Co., Ltd. Address before: Seoul, South Kerean Patentee before: LG Electronics Inc. |
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C56 | Change in the name or address of the patentee |
Owner name: LG-ERICSSON CO., LTD. Free format text: FORMER NAME: LG-NORTEL CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: Seoul, South Kerean Patentee after: Novera Optics Korea Co., Ltd. Address before: Seoul, South Kerean Patentee before: LG Nortel Co., Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060329 Termination date: 20160815 |
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CF01 | Termination of patent right due to non-payment of annual fee |