Source: http://www.google.com/patents/US6615269?dq=5,241,671
Timestamp: 2015-01-25 21:42:55
Document Index: 416901538

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

Patent US6615269 - Method and arrangement for implementing certain negotiations in a packet ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA method is disclosed for a mobile station (MS) for negotiating a set of Layer 3 parameters with a network device (NW) in association with the setup of a new Packet Data Protocol context. A request message (511) is created for requesting the setup of a new Packet Data Protocol context, and a set of suggested...http://www.google.com/patents/US6615269?utm_source=gb-gplus-sharePatent US6615269 - Method and arrangement for implementing certain negotiations in a packet data networkAdvanced Patent SearchPublication numberUS6615269 B1Publication typeGrantApplication numberUS 09/502,271Publication dateSep 2, 2003Filing dateFeb 11, 2000Priority dateFeb 16, 1999Fee statusLapsedAlso published asWO2000049784A1Publication number09502271, 502271, US 6615269 B1, US 6615269B1, US-B1-6615269, US6615269 B1, US6615269B1InventorsJan Suum�ki, Tuomas Niemel�Original AssigneeNokia Mobile Phones Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (12), Referenced by (22), Classifications (17), Legal Events (10) External Links: USPTO, USPTO Assignment, EspacenetMethod and arrangement for implementing certain negotiations in a packet data networkUS 6615269 B1Abstract A method is disclosed for a mobile station (MS) for negotiating a set of Layer 3 parameters with a network device (NW) in association with the setup of a new Packet Data Protocol context. A request message (511) is created for requesting the setup of a new Packet Data Protocol context, and a set of suggested Layer 3 parameters (510) is inserted into the created request message. The request message is transmitted to the network device. After receiving from the network device a set of agreed Layer 3 parameters (514), they are employed within the new Packet Data Protocol context the setup of which was requested.
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 and the arrangement of negotiations where the protocol-determined parameters relating to the communication are agreed upon.
BACKGROUND OF THE INVENTION FIG. 1 illustrates the known data protocol stacks that are applied in a packet-switched communication connection where one end is a Mobile Station (MS) and the communication takes place over a GPRS network (General Packet Radio Service) through a Base Station Subsystem (BSS), a Serving GPRS Support Node (SGSN) and a Gateway GPRS Support Node (GGSN). The protocol layers where the peer entities are in the MS and the BSS are the physical layer 101 that employs the GSM cellular radio system (Global System for Mobile telecommunications), the Media Access Control (MAC) layer 102 and the Radio Link Control layer 103 which sometimes is regarded as only a part of the MAC layer 102�hence the dashed line between them. The protocol layers where the peer entities are in the BSS and the SGSN are the L1bis layer 104, the Network Service layer 105 and the BSS GPRS Protocol (BSSGP) layer 106.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and arrangement that would accomplish the tasks of known communication protocol arrangements but with a simpler protocol structure.
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, and indeed the invention is very advantageously applicable for example to the future third generation digital cellular networks. As additional background to the invention we will first consider some known characteristics of the GPRS system.
Above the LLC layer there are the known GPRS Mobility Management functions 204 (also known as the Layer 3 Mobility Management functions or L3MM), SNDCP functions 205 and Short Messages Services functions 206. Each one of these blocks has one or more interfaces with the LLC layer 201, connecting to its different parts. The Logical Link Management Entity 207 has an LLGMM control interface (Logical Link�GPRS Mobility Management) with block 204. Mobility management data is routed through a LLGMM data interface between block 204 and the first Logical Link Entity 208 of the LLC layer. The second 209, third 210, fourth 211 and fifth 212 Logical Link Entities connect to block 205 through the corresponding interfaces; according to the QoS levels handled by each of the Logical Link Entities the interfaces are known as QoS 1, QoS 2, QoS 3 and QoS 4. The sixth Logical Link Entity 213 of the LLC layer connects to block 206 via an LLSMS interface (Logical Link�Short Messages Services). The Service Access Point Identifiers or SAPIs of the first 208, second 209, third 210, fourth 211, fifth 212 and sixth 213 Logical Link Entities are respectively 1, 3, 5, 9, 11 and 7. Each one of them is connected inside the LLC layer to a multiplexing block 214, which handles the connections through the RR interface to block 202 and further towards the mobile station as well as the connections through the BSSGP interface to block 203 and further towards the SGSN. The connection between the multiplexing block 214 and the lower layer block 202 in the direction of the MS may be described as a �transmission pipe�.
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/RR 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 the use of PDP context messages as vehicles of the XID negotiation according to an advantageous embodiment of the invention. FIG. 5 is a simplified schematic illustrating the protocol entities in a Mobile Station (MS) and a NetWork (NW) that have an active role in the activation of a new PDP context. At step 510 the L3CE entity 501 of the MS asks the local Session Management (SM) entity 502 to set up a new PDP context having certain QoS parameters. According to the invention the same request will contain the L3CE parameters which the L3CE entity of the MS would like to be used in association with the new PDP context. At step 511 the SM entity of the MS will transmit to the network a request for creating a new PDP context; if the notation of GPRS is used, step 511 corresponds to the transmission of an �Activate PDP context request� message. It will contain the L3CE parameters which the L3CE entity gave to the SM entity in the MS.
When the PDP context activation request reaches the network element where the peer entity to the MS's L3CE entity 504 is operative, the local SM entity 503 will extract the L3CE parameters and forward them to the L3CE entity according to step 512. According to the known principle of negotiation the network side L3CE will answer with a set of acceptable L3CE parameters at step 513; the parameters in the answer may have the same values or there may be one or more different values than what the L3CE entity received. At step 514 the network side SM entity will transmit the negotiation result to the MS; again if the notation of GPRS is used, step 514 corresponds to the transmission of an �Activate PDP context accept� message. At step 515 the SM entity 502 of the MS forwards the negotiation result to the local L3CE entity 501.
The local information transfer between the protocol entities of a single device takes place through so-called primitives. The primitives referred to in the description above in association with steps 510, 512, 513 and 515 could be called for example the �Create_New_PDP_Context_req( )�, �XID_ind( )�, �XID_rsp( )� and �Create_New_PDP_Context_cnf( )� primitives respectively.
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ClassificationH04L29/06, H04L, G06F15/16Cooperative ClassificationH04L69/24, H04W28/04, H04W28/18, H04W76/02, H04W36/00European ClassificationH04L29/06P, H04W28/18Legal EventsDateCodeEventDescriptionOct 25, 2011FPExpired due to failure to pay maintenance feeEffective date: 20110902Sep 2, 2011LAPSLapse for failure to pay maintenance feesApr 11, 2011REMIMaintenance fee reminder mailedSep 16, 2008SULPSurcharge for late paymentSep 16, 2008FPAYFee paymentYear of fee payment: 4Sep 15, 2008PRDPPatent reinstated due to the acceptance of a late maintenance feeEffective date: 20080916Oct 23, 2007FPExpired due to failure to pay maintenance feeEffective date: 20070902Sep 2, 2007REINReinstatement after maintenance fee payment confirmedMar 21, 2007REMIMaintenance fee reminder mailedFeb 11, 2000ASAssignmentOwner name: NOKIA MOBILE PHONES LTD., FINLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SUUMAKI, JAN;NIEMELA, TUOMAS;REEL/FRAME:010560/0702Effective date: 19991102RotateOriginal 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