CN1201608C - 分组数据系统中提高性能的装置和方法 - Google Patents

分组数据系统中提高性能的装置和方法 Download PDF

Info

Publication number
CN1201608C
CN1201608C CNB021248052A CN02124805A CN1201608C CN 1201608 C CN1201608 C CN 1201608C CN B021248052 A CNB021248052 A CN B021248052A CN 02124805 A CN02124805 A CN 02124805A CN 1201608 C CN1201608 C CN 1201608C
Authority
CN
China
Prior art keywords
packet
buffer
source point
packets
grouping
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 - Lifetime
Application number
CNB021248052A
Other languages
English (en)
Other versions
CN1392740A (zh
Inventor
塞巴斯蒂安·塔拉那尼
阿乔伊·辛格
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.)
Google Technology Holdings LLC
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of CN1392740A publication Critical patent/CN1392740A/zh
Application granted granted Critical
Publication of CN1201608C publication Critical patent/CN1201608C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/12Avoiding congestion; Recovering from congestion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/26Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
    • H04L47/266Stopping or restarting the source, e.g. X-on or X-off
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/30Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/32Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/50Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

一种用于控制系统中的数据分组丢失的装置和方法,其中分组从源点(110)经分组转发器(106)通过具有不同带宽的多个链路(108,102)发送到目的点(100)。分组转发器有效地监视第一缓冲器(116)中分组的平均数量,并且当平均数升高到预定的阈值时,分组转发器向源点发信令,停止发送数据分组。然后源点压缩从网络(112)接收到的分组并将它存储到第二缓冲器(118)中,直至源点能够再次将压缩的分组发送到分组转发器。当源点的缓冲器已满时,它将在执行压缩前丢弃它从网络收到的任何分组。当第一缓冲器中的分组平均数量低于阈值时,分组转发器向源点发信令以继续向目地点发送压缩分组。

Description

分组数据系统中提高性能的装置和方法
发明领域
本发明一般涉及通信系统领域,尤其是涉及码分多址(CDMA)通信系统。
发明背景
在现有的第三代合作工程2(3GPP2)结构中,“接入服务网络”(APN)包含基于无线接入网络(RAN)的CDMA IS-2000和其他一些包括“分组数据服务节点”(PDSN)的网络元件。APN中的PDSN通过路由网络与RAN中的“分组控制功能”(PCF)相连。PDSN和PCF之间的逻辑接口被称之为RAN-PDSN(RP)接口。RP接口还被称之为A10-A11接口或Aquarter接口。移动台使用点到点协议(PPP)作为接入协议与RAN和PDSN通信。PPP帧通过RAN传输到PDSN。
PPP支持例如头部压缩、有效载荷压缩和加密的功能机制。PPP帧终止于MS和PDSN。使用通用路由封装(GRE)协议并通过RP接口,在PCF和PDSN之间发射PPP帧。通过空中接口,PPP帧在RAN和MS之间发射。
RAN通过容易导致信号衰落的低频带无线链路与MS接口。RAN通过稳定的较高频带有线链路与PDSN接口。频带的不同容易导致PDSN和MS之间分组的丢失,因为PDSN能以比RAN向MS发送分组的更高的速率向RAN发送分组。丢失单个从PDSN发送到PCF的GRE分组在MS处会转化为丢失多个PPP帧。在压缩分组的情况下,GRE分组丢失能导致发往MS的分组的更为显著的丢失。举例来说,当使用delta压缩算法压缩分组头部,或采用基于有效载荷压缩的Lempel,Ziv和Welch(LZW)时,发往MS的分组的GRE分组丢失所带来的影响被放大了。进一步地,除非压缩状态在MS和PDSN之间被重新协定,RAN中在GRE分组丢失之后到达MS的压缩分组将不能在MS那里被正确解压缩。以这种方式丢失的多个分组对于在MS上运行的应用程序以及有限带宽的无线链路的有效利用都有不利影响。当包含帧边界的字节流在PCF或PCF和MS之间的一些中间节点发生丢失时,还可能发生发往MS的非压缩分组的更加显著的分组丢失。
因此,需要一种设备和方法来控制系统中的分组丢失,其中分组从源点通过多个具有不同带宽的链路发送到目的点。
附图简要说明
图1为方框图,示出根据本发明支持用于控制分组丢失的装置和方法的网络组成部分之间的关系。
图2为流程图,示出根据本发明控制分组丢失的优选实施例的PCF中的逻辑流程;
图3为流程图,示出根据本发明优选实施例,PDSN中用于停止向PCF发送分组的逻辑流程。
图4为流程图,示出根据本发明优选实施例,PDSN中用于向PCF发送分组的逻辑流程;
具体实施方式
本发明是一种用于控制系统中的分组丢失的装置和方法,其中数据分组通过多个具有不同带宽的链路从源点发送到目的点。在优选实施例中,本发明在“用于CDMA2000接入网络接口的互操作规范(IOS)”,TIA/EIA/IS-2001-A,Ballot Version December 2000(后文中被称之为“IOS”)中定义的CDMA2000系统中运行。然而,在可替换实施例中,本发明能够在时分多址(TDMA)系统,频分多址(FDMA)系统或OFDM中运行。
图1为方框图,在有关部分示出本发明的实施例能够实施的3GPP2cdma2000系统100的结构。该系统包括用于通过以太网或广域网(WAN)接口114接收互连协议(IP)分组的源点,优选的是与“分组交换网”(PSN)112相连的PDSN110。PDSN110优选地能将分组转换为封装在GRE分组中的PPP帧,并通过较高带宽的RP接口108将它们发射到分组转发器(任何将分组从一处发往另一处的设备)。
在优选实施例中,分组转发器是RAN104中的PCF106。本领域的普通技术人员将能认识到,RAN104可以包括图1中未示出的其它设备。PCF106含有缓冲器116,用于暂时存储随后通过较低带宽的RF链路102发送给目的点(优选的是MS100)的分组。当RAN104不能为发往MS100的分组安排无线资源时,PCF将从PDSN110收到的分组存储在缓冲器116中。如果PCF缓冲器116已满并且RAN104仍然无法为发送分组安排无线资源,分组将会丢失。PCF106还存储从PDSN110接收的数据分组,因为PCF106将分组发送给MS100不能象它从PDSN110接收分组那么快。本发明可使用的PDSN110和PCF106(位于RAN104中)在IOS的2.14节有更为详尽的描述。本领域的普通技术人员将认识到,任何用于向PDSN发送数据分组的网络和任何用于从PCF接收数据分组的MS都可以在本发明中使用。
优选实施例中,当检测到在RAN104中发生了阻塞事件时,本发明的装置和方法使用控制方案以提高分组数据从PDSN100向MS100传送的性能。阻塞事件可以包括但不限于无线链路恶化、系统过载、和发信令(即不能及时地交换信令消息)。本发明的优选实施例提高相关应用的性能。此外,优选实施例通过尽量减少经空中接口传输的将会在MS处被错误解压缩的压缩帧来改善较低带宽的无线链路的利用。
PCF106有效地监视与分组数据会话相关的缓冲器116的状态。分组数据会话定义为MS100和PSN112之间的共享状态。缓冲器115的状态表明在缓冲器116中分组的平均个数是高于还是低于预定阈值。如果状态表明分组的平均数量已经超出阈值,则已经发生了潜在阻塞事件,并且PCF106指示PDSN110停止向PCF106发送分组。(该操作用以减少PCF106丢弃分组的发生)。PDSN110也维持缓冲器118,用于存储从PSN112接收的分组。在优选实施例中,如果PDSN缓冲器118未满,PDSN110将压缩从PSN112接收到的分组并且将压缩的分组存储在缓冲器118中。然而,如果PDSN缓冲器118已满,PDSN106将在执行压缩前丢弃从PSN112接收的分组。当PCF106发现缓冲器中分组的平均数量已降低到阈值以下时,PCF106指示PDSN110继续传送分组。
尽管实施了上述行为,PCF106可能由于链路层的异常而丢弃压缩的分组或检测到在其它RAN104中的设备丢弃分组。当发生丢弃时,PCF106向PDSN110发送“压缩控制协议”(CCP)复位请求消息或头部压缩CONTEXT-STATE消息(取决于采用的压缩类型)。这些消息在PDSN110启动CCP或头部压缩再同步过程。在可选实施例中,可以从PCF106将带外控制信号发送到PDSN110来启动压缩状态再同步过程。在这种情况下,PDSN110将从PCF106接收带外信号,并且启动压缩再同步过程。头部和有效载荷压缩再同步过程在以下文献中有定义:(1)Network Working Group;Request for Comments:2507(网络工作组;请求备注:2507);M.Degermark et al,Lulea University ofTechnology,February 1999,(2)network Working Group;Request forComments:2508(网络工作组;请求备注:2508);S.Casner et al.,CiscoSystems,February 1999,(3)Network Working Group;Request forComments:1962(网络工作组;请求备注:1962);D Rand;Novel;June 1996,(4)Network Working Group;Request for Comments:1144(网络工作组;请求备注:1144);V.Jacobson;LBL;February 1990,和(5)Network WorkingGroup;Request for Comments:3095(网络工作组;请求备注:3095)其基于draft-ietf-rohc-rtp-09.txt(by Carsten Burmeister;February 26,2001)。再同步过程在PDSN110和MS100处都复位与压缩相关的状态信息。因为与压缩相关的状态消息仍未初始化,故而在完成CCP再同步之前,所有MS100接收的PPP帧被拒绝。
参见图2至4的流程框图,详细描述了本发明的方法的优选实施例。图2中,在步骤202中,该方法检测到PCF106中发生阻塞事件并向PDSN110发送“关闭”信号,指示PDSN110停止发送数据分组(步骤204)。在优选实施例中,该阻塞事件是充满PCF的缓冲事件。当PCF106检测到阻塞事件已清除(步骤206)时,它向PDSN110发送“开启”信号,指示PDSN110恢复发送数据分组(步骤208)。在步骤210,PCF106将从PDSN110接收的数据分组存储到PCF缓冲器116中用于随后向MS100发送。
图3流程图详细说明了当PDSN110从PCF106接收“关闭”信号(步骤302)时的优选方法。在步骤304,PDSN110停止向PCF106发送分组。在步骤306,PDSN204确定它当前是否从PSN112接收分组。如果PDSN110当前不是从PSN112接收分组,则该方法在步骤318结束。如果PDSN110当前在接收分组,它将确定它的缓冲器118是否已满(步骤308)。在优选实施例中,如果缓冲器118未满,PDSN110压缩收到的分组(步骤310),将压缩后的分组存储在它的缓冲器118(步骤312)中,并结束方法(步骤318)。如果PDSN缓冲器118已满,PDSN110丢弃从PSN112接收到的分组(步骤314),该方法结束(步骤318)。
图4流程图详细描述当PDSN110从PCF106(步骤402)接收到“开启”信号时的优选方法。在步骤404,该方法确定PDSN缓冲器118中是否有压缩分组。如果没有存储的分组,该方法在步骤410结束。如果有压缩分组,该方法从缓冲器118中检索压缩的分组(步骤406),将压缩的分组发送到PCF106(步骤408),该方法结束(步骤410)。
本发明的装置和方法提高发往100的分组的分组数据会话性能。该方法扩充PDSN110和PCF106之间的已知信令消息。此外,本发明通过消除经空中接口102发送的将会被MS100错误地解压缩的压缩分组来提高无线资源的利用。PDSN110使用从PCF106接收的“关闭”信号缓存或丢弃发往MS100的分组。因为分组在压缩之前被PDSN110丢弃,就避免了在MS100处的多个PPP帧的丢失,因而提高其性能。
在本发明的优选实施例中,当包含压缩PPP帧的分组在PCF106被丢弃时,PCF106向PDSN110分别发送CCP复位请求消息和/或头部压缩CONTEXT-STATE消息以启动CCP再同步过程,和头部压缩再同步过程。如果PCF106从其它RAN设备接收到丢失指示,也会发送这些消息。可能由于缓冲器溢出或链路层异常而发生分组丢失。在可选实施例中,PCF106可以向PDSN110发送带外控制信号以启动压缩状态再同步。
在没有本发明的方法情况下,在PCF106或其他任何PCF106和MS100之间的中间节点被丢弃的包含被压缩PPP帧的分组可能导致在MS100处的PPP帧丢失。MS100在从PDSN110接收到随后的PPP帧后,检测缺少的PPP帧。MS100检测丢失的PPP帧,和MS100启动CPP和头部压缩再同步过程导致更多的等待时间,并消耗无线资源。
那些本领域的技术人员将认识到,可以在不背离本发明范围或精神的情况下,对本发明的设备和该设备的结构进行改进和变化。例如该方法中,PDSN可以存储从PSN112接收的分组并在将其发送到PCF106之前压缩分组。同样,PDSN110也可以将从PSN112接收到的分组进行加密,以此作为对发往MS100的分组的压缩处理的取代或补充。

Claims (5)

1.一种用于在具有连接到分组转发器(110)的源点(112)的通信系统中、控制数据分组丢失的方法,其中,所述分组转发器向目的点发射数据分组,所述方法包括步骤:
从所述源点接收未压缩的数据分组;
确定(308)在缓冲器(118)中的未压缩的数据分组数量是否高于一阈值;
如果所述数量高于所述阈值,丢弃(314)从所述源点接收到的未压缩的数据分组。
2.根据权利要求1的方法,进一步包括步骤:
如果所述数量低于所述阈值,则压缩(310)从所述源点(112)接收的未压缩的数据分组;和
在缓冲器(118)中存储所述已压缩的数据分组。
3.根据权利要求1的方法,进一步包括步骤:
在所述分组转发器中检测分组丢失;和
向所述源点发送消息以启动压缩状态再同步。
4.一种用于在通信系统中减少数据分组丢失的装置,其包括:
源点(112)
与所述源点可操作地相连的分组转发器(110),所述源点用于接收未压缩的数据分组;
其中,所述转发器确定在第一缓冲器中的压缩数据分组的数量是否高于一阈值,如果所述数量高于所述阈值,则丢弃从所述源点接收到的未压缩的数据分组。
5.根据权利要求4的装置,其中,当所述数量不高于所述阈值时,所述分组转发器对从所述源点接收到的未压缩的数据分组进行压缩、并且将压缩的数据分组存储在缓冲器中。
CNB021248052A 2001-06-20 2002-06-20 分组数据系统中提高性能的装置和方法 Expired - Lifetime CN1201608C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US29970401P 2001-06-20 2001-06-20
US60/299,704 2001-06-20
US10/158,722 US20020196743A1 (en) 2001-06-20 2002-05-30 Apparatus and method for enhancing performance in a packet data system
US10/158,722 2002-05-30

Publications (2)

Publication Number Publication Date
CN1392740A CN1392740A (zh) 2003-01-22
CN1201608C true CN1201608C (zh) 2005-05-11

Family

ID=26855317

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB021248052A Expired - Lifetime CN1201608C (zh) 2001-06-20 2002-06-20 分组数据系统中提高性能的装置和方法

Country Status (4)

Country Link
US (1) US20020196743A1 (zh)
JP (1) JP2003060677A (zh)
KR (1) KR100580141B1 (zh)
CN (1) CN1201608C (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1859318B (zh) * 2005-12-30 2012-01-25 华为技术有限公司 消息传输系统及其消息缓冲装置及方法

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030099257A1 (en) * 2001-11-28 2003-05-29 Freter Karl E. Pre-delivery notification of user data for wireless packet data systems
US7031736B2 (en) * 2001-12-03 2006-04-18 Nokia Corporation Method and apparatus of header compression for broadcast services in radio telecommunication system
US20030134651A1 (en) * 2002-01-16 2003-07-17 Hsu Raymond T. Method and apparatus for flow treatment and mapping on multicast/broadcast services
US8959230B2 (en) * 2002-01-28 2015-02-17 Qualcomm Incorporated Method and apparatus for negotiation of transmission parameters for broadcast/multicast services
US8046404B1 (en) * 2002-03-29 2011-10-25 Graphics Properties Holdings, Inc. System and method for discarding frames of an image during transport across a network link
KR100546002B1 (ko) * 2003-11-25 2006-01-25 한국과학기술원 무선이동통신시스템의 자원 할당방법 및 패킷 그루핑 기능을 갖는 기지국 시스템과 단말 시스템
US7586922B2 (en) * 2004-03-12 2009-09-08 Telefonaktiebolaget Lm Ericsson (Publ) Providing higher layer packet/frame boundary information in GRE frames
US7668141B2 (en) * 2004-07-06 2010-02-23 Motorola, Inc. Method and apparatus for managing packet data loss in a wireless network
US7911945B2 (en) * 2004-08-12 2011-03-22 Nokia Corporation Apparatus and method for efficiently supporting VoIP in a wireless communication system
JP4554298B2 (ja) 2004-08-20 2010-09-29 富士通株式会社 波長分割多重光伝送システム
US20060291384A1 (en) * 2005-06-28 2006-12-28 Harris John M System and method for discarding packets
WO2007021943A2 (en) * 2005-08-11 2007-02-22 Starent Networks Corporation System and method for congestion control signaling
US20070060135A1 (en) * 2005-08-22 2007-03-15 Jeng-Tay Lin Method and device for streaming wireless digital content
JP4715521B2 (ja) * 2006-01-10 2011-07-06 株式会社日立製作所 通信システム,及び呼制御サーバ
US8488553B2 (en) * 2008-06-05 2013-07-16 Alcatel Lucent Method for providing seamless transition between networks following different protocols
KR101682508B1 (ko) * 2010-10-13 2016-12-07 삼성전자주식회사 라우팅 장치 및 네트워크 장치
US8811281B2 (en) 2011-04-01 2014-08-19 Cisco Technology, Inc. Soft retention for call admission control in communication networks
US20140281034A1 (en) * 2013-03-13 2014-09-18 Futurewei Technologies, Inc. System and Method for Compressing Data Associated with a Buffer
WO2016039900A1 (en) 2014-09-12 2016-03-17 Exxonmobil Upstream Research Comapny Discrete wellbore devices, hydrocarbon wells including a downhole communication network and the discrete wellbore devices and systems and methods including the same
EP3104563B1 (en) * 2015-06-10 2019-10-16 Nokia Solutions and Networks GmbH & Co. KG Sdn security
US10526888B2 (en) 2016-08-30 2020-01-07 Exxonmobil Upstream Research Company Downhole multiphase flow sensing methods
US10837276B2 (en) 2017-10-13 2020-11-17 Exxonmobil Upstream Research Company Method and system for performing wireless ultrasonic communications along a drilling string
US10724363B2 (en) 2017-10-13 2020-07-28 Exxonmobil Upstream Research Company Method and system for performing hydrocarbon operations with mixed communication networks
US10844708B2 (en) 2017-12-20 2020-11-24 Exxonmobil Upstream Research Company Energy efficient method of retrieving wireless networked sensor data
US11156081B2 (en) 2017-12-29 2021-10-26 Exxonmobil Upstream Research Company Methods and systems for operating and maintaining a downhole wireless network
CA3086529C (en) 2017-12-29 2022-11-29 Exxonmobil Upstream Research Company Methods and systems for monitoring and optimizing reservoir stimulation operations
US11293280B2 (en) 2018-12-19 2022-04-05 Exxonmobil Upstream Research Company Method and system for monitoring post-stimulation operations through acoustic wireless sensor network
US11952886B2 (en) 2018-12-19 2024-04-09 ExxonMobil Technology and Engineering Company Method and system for monitoring sand production through acoustic wireless sensor network
CN114128240A (zh) * 2019-02-28 2022-03-01 华为技术有限公司 实现内部网关协议的网络中的压缩数据传输
US11816110B2 (en) 2021-06-22 2023-11-14 International Business Machines Corporation Processing large query results in a database accelerator environment
DE102021206494B3 (de) * 2021-06-23 2022-10-27 Siemens Healthcare Gmbh Verfahren zur Überwachung einer Datenübertragung, Vorrichtung, insbesondere zur medizinischen Bildgebung, und Computerprogramm

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125096A (en) * 1988-10-31 1992-06-23 International Business Machines Corporation System for implementing to a packet switch protocol for a multinode data communications network utilizing separate data and control paths
DE69434727C5 (de) * 1994-01-21 2021-06-02 Koninklijke Kpn N.V. Verfahren und Vorrichtung zur Transformation einer Serie von Datenpaketten mit Hilfe von Datenkompression
KR20000001676A (ko) * 1998-06-12 2000-01-15 윤종용 중재 장치와 네트웍 소자간 인터페이스 방법
JP2001320372A (ja) * 2000-03-13 2001-11-16 Hyundai Electronics Ind Co Ltd 統合インターネットプロトコル網で統合加入者サーバの機能的モデリングを通した統合加入者管理装置及びその方法
KR100365788B1 (ko) * 2000-09-14 2002-12-26 삼성전자 주식회사 무선 패킷 데이터시스템의 수신 트래픽 양 결정방법 및 장치
US7096261B2 (en) * 2001-03-12 2006-08-22 Qualcomm Incorporated Method and apparatus for providing multiple quality of service levels in a wireless packet data services connection
US20020160812A1 (en) * 2001-04-26 2002-10-31 Ramin Moshiri-Tafreshi Channel supervision in a radio network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1859318B (zh) * 2005-12-30 2012-01-25 华为技术有限公司 消息传输系统及其消息缓冲装置及方法

Also Published As

Publication number Publication date
JP2003060677A (ja) 2003-02-28
CN1392740A (zh) 2003-01-22
KR100580141B1 (ko) 2006-05-16
US20020196743A1 (en) 2002-12-26
KR20020097029A (ko) 2002-12-31

Similar Documents

Publication Publication Date Title
CN1201608C (zh) 分组数据系统中提高性能的装置和方法
JP3751823B2 (ja) 実時間サービスにおけるヘッダ圧縮
EP1362446B1 (en) Transfer of ip data in communications system, using several logical connections for compressed fields on the basis of different contexts
US7391736B2 (en) Method and apparatus for transmitting packet data having compressed header
US5446736A (en) Method and apparatus for connecting a node to a wireless network using a standard protocol
JP5976277B2 (ja) 伝送制御方法
JP4560213B2 (ja) データネットワーク内の多重受信確認管理システム
US20030179720A1 (en) Congestion control in wireless telecommunication networks
JP2003229925A (ja) 通信システムのパケットデータ伝送方法
US8654858B2 (en) Methods and apparatus for differential encoding
JP2003516041A (ja) スケジューリングおよびヘッダ圧縮を利用しパケット遅延を軽減させるための方法と装置
CN110943933A (zh) 一种实现数据传输的方法、装置和系统
AU2004258114B2 (en) Performing compression of user datagram protocol packets
CN110868359B (zh) 一种网络拥塞控制方法
US7065087B2 (en) Performing compression of user datagram protocol packets
CA2373923C (en) Communication system and method in an ip network
KR101162374B1 (ko) 무선 접속 통신 시스템에서 패킷 헤더 송수신 장치 및 방법
KR100765122B1 (ko) 패킷의 헤더압축을 지원하는 통신 시스템에서전체헤더패킷과 압축헤더패킷의 전송 제어 장치와 방법
Degermark et al. Soft state header compression for wireless networks
CN117676697A (zh) 一种物联网设备的数据传输方法和系统

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
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: MOTOROLA MOBILE CO., LTD

Free format text: FORMER OWNER: MOTOROLA INC.

Effective date: 20110120

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20110120

Address after: Illinois State

Patentee after: MOTOROLA MOBILITY, Inc.

Address before: Illinois, USA

Patentee before: Motorola, Inc.

C41 Transfer of patent application or patent right or utility model
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: Illinois State

Patentee after: MOTOROLA MOBILITY LLC

Address before: Illinois State

Patentee before: MOTOROLA MOBILITY, Inc.

TR01 Transfer of patent right

Effective date of registration: 20160303

Address after: California, USA

Patentee after: Google Technology Holdings LLC

Address before: Illinois State

Patentee before: MOTOROLA MOBILITY LLC

CX01 Expiry of patent term

Granted publication date: 20050511

CX01 Expiry of patent term