Source: http://www.google.com/patents/US7016678?dq=autodesk
Timestamp: 2014-11-24 00:40:10
Document Index: 620047688

Matched Legal Cases: ['art 301', 'art 303', 'art 302', 'art 301', 'art 303', 'art 302', 'art 302']

Patent US7016678 - Method and arrangement for avoiding loss of error-critical non real time ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA method is disclosed for a mobile station for performing a handover from a first network connection to a second network connection. A mobile telecommunication system provides for non-real time telecommunication connections over a radio interface between mobile stations and the fixed parts of the mobile...http://www.google.com/patents/US7016678?utm_source=gb-gplus-sharePatent US7016678 - Method and arrangement for avoiding loss of error-critical non real time data during certain handoversAdvanced Patent SearchPublication numberUS7016678 B1Publication typeGrantApplication numberUS 09/443,262Publication dateMar 21, 2006Filing dateNov 22, 1999Priority dateNov 23, 1998Fee statusPaidPublication number09443262, 443262, US 7016678 B1, US 7016678B1, US-B1-7016678, US7016678 B1, US7016678B1InventorsJuha Kalliokulju, Matti Turunen, Jan Suum�kiOriginal AssigneeNokia Mobile Phones, Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (14), Non-Patent Citations (2), Referenced by (6), Classifications (9), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetMethod and arrangement for avoiding loss of error-critical non real time data during certain handoversUS 7016678 B1Abstract A method is disclosed for a mobile station for performing a handover from a first network connection to a second network connection. A mobile telecommunication system provides for non-real time telecommunication connections over a radio interface between mobile stations and the fixed parts of the mobile telecommunication system. At least one active non-real time telecommunication connection is between a mobile station and the fixed parts of the mobile telecommunication system is suspended (704) before performing a handover (702′) from the first network connection to the second network connection. After the new connection has been established the suspended non-real time telecommunication connection are resumed (705).
TECHNOLOGICAL FIELD The invention concerns generally the protocol structures that are used to arrange the communication between a mobile terminal and a packet-switched network. Especially the invention concerns the optimal composition of such structures from the point of view of minimized risk of losing certain types of data in certain handover situations on one hand and reduced complexity on the other.
DETAILED DESCRIPTION OF THE INVENTION We will illustrate the applicability of the invention in connection with the known GPRS system. However, the presented examplary embodiments do not limit the applicability of the invention to any specific system. As a background to the invention we will first consider some known characteristics of the GPRS system.
FIG. 3 illustrates an arrangement according to the invention where the LLC layer has been completely omitted. The upper layers comprise a MM/RR part 301 for known mobility and radio resource management, an SMS part 303 for processing data related to short messages, as well as a part 302′ for processing the received data and data to be transmitted according to other functionalities. �Local� multiplexing/-demultiplexing is performed at the upper layers in blocks 304 to 308 so that there is only one transmission pipe for control information between the MM/R part 301 and the lower layers, one transmission pipe for SMS-related information between the SMS part 303 and the lower layers, and one transmission pipe for each quality of service class between the other functionalities part 302 and the lower layers. Multiplexing is shown in FIG. 3 as taking place in separate functional blocks; however, it may be an inherent part of for example one or several functionalities in the other functionalities part 302.
Next we will describe some handover situations where a mobile station and the network will apply the principle of temporarily suspending error-critical communications according to the invention. FIG. 5 a illustrates a situation where the mobile station 501 has a macrodiversity connection with two RNCs (Radio Network Controllers) network so that the first RNC 502 is the so-called serving RNC and the second RNC 503 is the so-called drifting RNC. The interface between the two RNCs is called the Iur interface. From the serving RNC 502 there is a connection to a SGSN 504 over a so-called Iu interface, and from the SGSN there is a connection to a GGSN 505. A generalisation of the arrangement of FIG. 5 a is the case where the second RNC is just a �new� serving RNC regardless of whether it was firstly a drifting RNC or not. Drifting RNCs relate only to macrodiversity; if no macro-diversity is applied there will be an �old� serving RNC and a �new� serving RNC (or, in second generation systems, an �old� BSS and a �new� BSS) with little simultaneous service from both of them to the mobile station.
In FIG. 5 b either the mobile station 501 or some network device in the radio access network (not shown) where the serving RNC 502 is located notices that the direct connection between the mobile station and the serving RNC is critically weakening or has been severed, so a handover to the second RNC 503 is inevitable. According to the invention, the handover is started by requesting all such active services to be suspended which require a high level of correctness and tolerate long delays. In a GPRS type arrangement the suspension of services would require suspending whole PDP contexts, because the PDP context can only have one QoS. In a UMTS type arrangement it suffices to suspends those QoS flows for which the QoS allows for (delay tolerance) and even requires (correctness) the suspension. To retain generality we will use the word �service� for the entities that will be suspended. It will be most advantageous to define beforehand, in a standardised specification, a threshold value either for required correctness or for allowed delays or for both so that only those active services will be suspended for which the required correctness or allowed delay or both exceed the threshold value(s).
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4654867 *Aug 11, 1986Mar 31, 1987Motorola, Inc.Cellular voice and data radiotelephone systemUS5513380 *Feb 14, 1994Apr 30, 1996Siemens AktiengesellschaftMobile speed dependent handover techniques in hierarchical mobile radio networksUS5530693Jun 6, 1995Jun 25, 1996Averbuch; RodMethod and apparatus for performing handoff in a packet data communication systemUS5561844 *Nov 21, 1995Oct 1, 1996Motorola, Inc.Minimization of facsimile data loss during cellular handoverUS5809422 *Mar 8, 1996Sep 15, 1998Watkins Johnson CompanyDistributed microcellular communications systemUS5943333 *Jul 27, 1995Aug 24, 1999MotorolaRadio communications device and methodUS6052385 *Dec 17, 1996Apr 18, 2000Nokia Telecommunications OyMultichannel high-speed data transferUS6073032 *May 23, 1996Jun 6, 2000Nokia Telecommunications OyReception method and a receiverUS6094424 *Feb 10, 1998Jul 25, 2000At&T Corp.Mobile host roaming ATM virtual circuit rerouting method and apparatusUS6108539 *Oct 29, 1997Aug 22, 2000Aircell, IncorporatedNon-terrestrial cellular mobile telecommunication stationUS6122293 *Feb 13, 1998Sep 19, 2000Telefonaktiebolaget Lm EricssonMethod and system for link adaptation having a variable update intervalUS6192039 *Mar 19, 1997Feb 20, 2001Yrp Mobile Telecommunications Key Technology Research Laboratories Co., Ltd.Method for flow control, node and communication network employing the flow controlUS6307867 *May 14, 1998Oct 23, 2001Telefonaktiebolaget Lm Ericsson (Publ)Data transmission over a communications link with variable transmission ratesWO1998053576A2May 15, 1998Nov 26, 1998Ericsson Telefon Ab L MMethod related to gprs (general packet radio service) system providing packet switched connections* Cited by examinerNon-Patent CitationsReference1"Handover In A High-Speed Wireless ATM Based Lan", Meulenhof et al., IEEE 1999, Eindhoven University Of Technology, no month listed.2ETSI 301344, "Digital Cellular Telecommunication System, (Phase 2+), General Packet Radio Service (GPRS)", Service Description Stage 2, GSM 03.60, Version 6.3.2., 1997, p. 72, no month listed.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7369564 *Jun 29, 2001May 6, 2008Cisco Technology, Inc.Method and system for service flow mobility in a wireless networkUS8223711Oct 27, 2009Jul 17, 2012Sprint Communications Company L.P.Efficient message delivery to wireless communication devicesUS8543080 *Mar 24, 2008Sep 24, 2013Siemens AktiengesellschaftMethod of downloading data in a radio communications systemUS8605680 *Aug 6, 2008Dec 10, 2013Nokia Siemens Networks OyMethod and apparatus for temporarily suspending a network connectionUS20100128694 *Nov 24, 2008May 27, 2010At&T Mobility Ii LlcSelection of packet data protocol context for handover from cellular network to femto cellUS20110116471 *Aug 6, 2008May 19, 2011Nokia Siemens Networks OyMethod and apparatus for temporarily suspending a network connection* Cited by examinerClassifications U.S. Classification455/436, 370/331, 455/525International ClassificationH04W36/12, H04W36/10Cooperative ClassificationH04W36/12, H04W36/10European ClassificationH04W36/10, H04W36/12Legal EventsDateCodeEventDescriptionAug 26, 2013FPAYFee paymentYear of fee payment: 8Aug 21, 2009FPAYFee paymentYear of fee payment: 4Dec 23, 2008ASAssignmentOwner name: NOKIA CORPORATION, FINLANDFree format text: MERGER;ASSIGNOR:NOKIA MOBILE PHONES LTD.;REEL/FRAME:022012/0882Effective date: 20011001Dec 19, 2008ASAssignmentOwner name: QUALCOMM INCORPORATED, CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NOKIA CORPORATION;REEL/FRAME:021998/0842Effective date: 20081028Nov 22, 1999ASAssignmentOwner name: NOKIA MOBILE PHONES LIMITED, FINLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KALLIOKULJU, JUHA;TURUNEN, MATTI;SUUMAKI, JAN;REEL/FRAME:010419/0697Effective date: 19991022RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google