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Topic: PDP Context

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	[No title]
		PDP Packet Data Protocol PDP Context A PDP connection between the UE and the GGSN.
		A PDP Context is a connection between the UE and the GGSN, over which the packets are transferred.
		Once activated, all PDP contexts have equal status, meaning that a primary PDP context can be deleted while keeping the link between the UE and the GGSN, as long as there are other (secondary) PDP contexts active for the same IP address.
	www.ietf.org /rfc/rfc3314.txt (5396 words)

	Internet Access over GPRS -TechArena- Guides & Tutorials
		The PDP context multiplexing is a function that (1) routes each data unit received on a particular PDP context to the appropriate upper layer and (2) routes each data unit arriving from an upper layer to the appropriate PDP context.
		The GPRS bearer is a key characteristic of a PDP context because it specifies QoS properties such as the reliability, delay, throughput, and precedence of the packets transmitted on the PDP context.
		When the GGSN identifies the PDP context that has a stored TI that matches the TI in the envelope of the received packet, it discovers the APN associated with this packet and effectively knows the external PDN that the payload (i.e., the original IP packet transmitted by the MS) should be forwarded to.
	www.techarena.in /forums/printthread.php?t=4573 (6827 words)

	Supporting Packet-Data QoS in Next-Generation Cellular Networks
		A successful PDP context activation leads to the establishment of a packet data session and mobility management states in the MS as well as in the network.
		This "secondary" PDP context is a lightweight approach that inherits the majority of its attributes from the "primary" context, and results in the establishment of a separate radio access bearer as a GTP tunnel.
		Multiplexing the new application packets onto an existing PDP context may, however, require that the existing QoS profile of the PDP context be modified to accommodate the additional bit-rate requirement of the new flow in addition to the existing ones.
	www.comsoc.org /ci/private/2001/feb/koodli.html (5300 words)

	Mandragor & Apinc - Free Documentation Base
		Context events are ordered by time since every message must first be processed as Incoming, then as Resource allocation and only then as Outgoing.
		Each decision is bound to a context object, which determines which portion of the request context it applies to.
		When individual decisions apply to different sub-groups of the context, the PDP should send each group of decision objects encapsulated by the context flags object with the context flags applicable to these objects set (see the examples in Section 5).
	docs.mandragor.org /files/RFCs/27xx/2749 (3251 words)

	Hemant Chaskar Rajeev Koodli Nokia Research Center Nokia Research Center
		It is required to program appropriate packet classification contexts in the edge nodes of the CN (SGSN and GGSN) at the time of PDP context activation or modification.
		The semantics of PDP messaging with respect to MPLS and DiffServ in the CN is given in the next section.
		PDP is the signaling protocol used to establish (contexts for) different communication bearers in UMTS network.
	www.isoc.org /isoc/conferences/inet/01/CD_proceedings/T56/MPLSDiff.htm (3436 words)

	IP.com's Prior Art Database
		A PDP context in the SGSN comprises all the information required to transport data packets from the Iu-interface to the Gn-interface and vice versa.
		The loss of such a big number of contexts implicates a high risk for the SGSN to run into an overload situation when a great portion of the mobile stations thus affected immediately tries to re-establish the PDP contexts that have just been lost.
		The PDP contexts are saved by defining pairs (A,B) of GTMs, such that B takes over the work of A in case of a recovery or outage of A and A takes over the work of B in case of a recovery or outage of B. Every GTM stores the "shadow contexts" of its partner.
	www.priorartdatabase.com /IPCOM/000012287 (675 words)

	EP1247409 (Site not responding. Last check: 2007-11-05)
		It is possible that the failed PDP contexts are left to hang until the mobile station MS releases them upon detecting that the communication fails.
		It is also possible that the 3G-SGSN releases the failed PDP context by sending a reteasePDPcontext message to the mobile station MS in accordance with the GPRS specifications.
		In case of a failure in the ATM-PVC connection, the PDP context of the failed ATM-PVC may be moved (rerouted) to another ATM-PVC; the 3G-SGSN sends a modify RAB request (i.
	swpat.ffii.org /pikta/txt/ep/1247/409 (2740 words)

	Overview of Symbian OS 7.0s (Site not responding. Last check: 2007-11-05)
		PDP contexts can be further broken down into two types – primary and secondary.
		A primary PDP context is a connection from the mobile phone to the network with one IP address allocated to it.
		A secondary PDP context is one that shares an IP address with a primary PDP context, but that represents another connection to the network.
	www.forum.nokia.com /Overview_of_Symbian_OS (1912 words)

	RFC2748
		Communication between the PEP and remote PDP is mainly in the form of a stateful request/decision exchange, though the remote PDP may occasionally send unsolicited decisions to the PEP to force changes in previously approved request states.
		The context object is used to determine the context within which all the other objects are to be interpreted.
		PDP to increment during subsequent communication after the initial Client-Open/Client-Accept exchange and the Key ID identifying the algorithm and key used to compute the digest.
	www.scit.wlv.ac.uk /rfc/rfc27xx/RFC2748.html (9626 words)

	PDP Context Activation and Deactivation (Site not responding. Last check: 2007-11-05)
		The PDP context activation makes the MS known in the concerned GGSN and communication to external networks is made possible.
		The PDP context activation corresponds from the end users perspective to "Logging On" to an external network.
		The difference from using a dial-up connection over circuit switched is that in GPRS the end user can have several PDP contexts activated simultaneously if the terminal supports several IP addresses.
	www.blueadmiral.com /Communications/html/EDGE12.html (92 words)

	美国专利申请公开说明书 20040100940 - Enhanced PDP context management using radio parameter information ... (Site not responding. Last check: 2007-11-05)
		In this case the PDP Context-related messages comprise one of an Activate PDP Context request, an Activate Secondary PDP Context request and a Modify PDP Context request.
		The method further includes, when terminating the PDP Context, requesting a modification of the paging parameters values so as to have the default or other parameters values.
		Preferably, when terminating the PDP Context the mobile station sends a Deactivate PDP Context request message with the information element that specifies the default values for the parameters of the DRX mode.
	cxp.paterra.com /uspregrant20040100940cn.html (248 words)

	User of RSIP within GPRS Networks
		PDP (Packet Data Protocol) is a term that is used within GPRS networks to refer to IP addresses, X.25 addresses etc. Since we are concerned about IPv4 addresses, the term PDP is synonymous with IPv4 address for this discussion.
		As seen in Figure 4, during PDP context activation (which is the procedure for IPv4 address assignment for the MS), one of the fields in the Activate PDP Context Request message sent from the MS to the SGSN is the Access Point Name (APN) field.
		The Create PDP Context Request message sent from the SGSN to the GGSN transparently contains the APN field that was used within the Activate PDP Context Request message sent from the MS to the SGSN.
	www.isoc.org /inet2001/CD_proceedings/T78/INET-T78-GPRSAddr.htm (1951 words)

	* PDP - (Computing): Definition
		It looms large in hacker folklore because of its adoption in the mid-1970s by many university computing facilities and research labs, including the,, and...
		IP is an example of a PDP supported by GPRS...
		The original aim was to make the first small computers for engineering and departmental use, and the PDP (Programmed Data Processor) range became known as minicomputers to contrast them with giant mainframes...
	en.mimi.hu /computing/pdp.html (295 words)

	OpenGGSN - Open Source GPRS Core Network. Home of the Linux GGSN (Site not responding. Last check: 2007-11-05)
		PDP stands for "Packet Data Protocol", and refers to the packet protocol which is tunneled by the GPRS network.
		PDP Type PPP is attractive to service providers because they can interface to the GPRS network using the Layer 2 Tunneling Protocol (L2TP), and effectively be in charge of IP address allocation, DNS settings and billing of the end-user.
		A Create PDP Context request is forwarded to the ggsn which allocates an IP address for the context.
	www.openggsn.org /FAQ.html (1998 words)

	RFC 3314 - Recommendations for IPv6 in Third Generation Partnership Project (3GPP) Standards
		Together, a primary PDP Context and zero or more secondary PDP Contexts define, in IETF terms, a link.
		There are three basic actions that can be performed on a PDP Context: PDP Context Activation, Modification, and Deactivation.
		Specify that multiple prefixes may be assigned to each primary PDP context, 2.
	www.packetizer.com /rfc/rfc.cgi?num=3314 (5442 words)

	RFC 3314
		PDP Context A PDP connection between the UE and the GGSN.
		Instead of using the full IPv6 address to identify a PDP context, the IPv6 WG recommends that the SGSN be informed of each prefix that is currently assigned to a PDP context.
		In order to allow for the configuration and use of multiple IPv6 addresses per primary PDP Context having different interface identifiers, some modifications to the current 3GPP specifications would be required.
	asg.web.cmu.edu /rfc/rfc3314.html (4991 words)

	Dialog on Superposition
		PDP networks are capable of computational operations only in so far as their activation landscapes are (after being shaped through the application of learning rules) structurally isomorphic with their target domains.
		The content of the 10 unit subpart of layer 2, which is directly fed by the input layer, is the word in no grammatical context, while the content of the 70 unit subpart of layer 2, which is fed back from layer 3, is a different word in its own particular grammatical context.
		But far more obviously, a word in a grammatical context has a different content from a different word in its own grammatical context (something that is marked in this case by the fact that the latter occupies a quite different point in the activation space of the third layer).
	psy.uq.edu.au /CogPsych/Noetica/OpenForumIssue10 (10887 words)

	C:\BELLBO~1\COMPUT~1\HTMFILES\00000445.HTM (Site not responding. Last check: 2007-11-05)
		process is executing, the process context can be considered to reside in processor registers.
		To switch from one process to another, it is necessary that the process context from the previously executing process be saved in its PCB in memory, and that the process context for the process about to be executed be loaded from its PCB in memory.
		The "save process context" instruction saves the complete process context in memory while the "load process context" instruction loads the complete process context from memory.
	research.microsoft.com /users/gbell/Computer_Engineering/00000445.htm (510 words)

	(WO 01/69950) METHOD AND SYSTEM FOR ACTIVATING A PACKET DATA SUBSCRIBER CONTEXT FOR PACKET DATA (Site not responding. Last check: 2007-11-05)
		Initially, an application protocol such as H.323, H.248 or SIP is set up using a signaling or default context within the first network.
		Based on a message of the application protocol transmitted from the second network, a capability information is determined and used to activate the context.
		Thereby, the capabilities can be agreed in advance and the context can be activated e.g.
	wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/69950.010920&... (224 words)

	RFC 3314 (rfc3314) - Recommendations for IPv6 in Third Generation Partners (Site not responding. Last check: 2007-11-05)
		It is assumed that 3GPP nodes will not generate any addresses, except for the single identifier/prefix combination assigned by the GGSN.
		Because multiple IPv6 hosts may attach through a 3GPP handset, the IPv6 WG recommends that one or more /64 prefixes should be assigned to each primary PDP context.
		Given that mobile devices may generate multiple addresses using more than one interface identifier, this would require DAD for the newly generated addresses over the air interface, and a proxy DAD, function which would increase the complexity and the amount of state to be kept in the GGSN.
	www.incywincy.com /default?catid=1167099&cached=www.faqs.org/rfcs/rfc3314.html (5236 words)

	Learning Recursive Phrase Structure: Combining the Strengths of PDP and X-Bar Syntax - Berg (ResearchIndex)
		Abstract: this paper, we introduce the XERIC Parser, a connectionist syntactic analyzer with a fixed network architecture which places no prior limit on the extent of the structure of a sentence.
		Learning Recursive Phrase Structure: Combining the Strengths of PDP and X-Bar Syntax.
		8 A PDP architecture for processing sentences with relative cl..
	citeseer.ist.psu.edu /berg91learning.html (524 words)

	Citations: Identifying the trigger feature for hidden units in a PDP model of the early visual pathway - Dawson, ... (Site not responding. Last check: 2007-11-05)
		Citations: Identifying the trigger feature for hidden units in a PDP model of the early visual pathway - Dawson, Kremer, Gannon (SMEALSearch) - Pal,Rangaswamy,Giles,Debnath
		Identifying the trigger feature for hidden units in a PDP model of the early visual pathway.
		Definition 1 The trigger feature with respect to a given unit s weight vector, # w, is the pattern constructed such that the maximum input appears where the corresponding connection weight is positive, and the minimum possible input appears where the weight is negative.
	smealsearch.psu.edu /context/28193/0 (194 words)

	GPRS: How to open and close PDP Context ?
		This PDP Context Identifier is a numeric parameter
		If any PDP context is already in the requested state, the state
		PDP Context Identifier is a numeric parameter which specifies
	www.experts-exchange.com /Programming/Wireless_Programming/GPRS/Q_20653264.html (431 words)

	Zvon - RFC 3314 [Recommendations for IPv6 in Third Generation Partnership Project (3GPP) Standards] - Introduction
		The 3GPP address allocation information in this document is based on the 3GPP document TS 23.060 version 4.1.0 [OLD-TS23060].
		More information about the GPRS system can be found in [OLD-TS23060].
		The most important 3GPP concept in this context is a PDP Context.
	www.zvon.org /tmRFC/RFC3314/Output/chapter1.html (2704 words)

	(WO 01/28160) ESTABLISHING A COMMUNICATIONS SESSION HAVING A QUALITY OF SERVICE IN A COMMUNICATIONS SYSTEM (Site not responding. Last check: 2007-11-05)
		A primary Packet Data Protocol (PDP) context is established with call setup that contains the default quality of service (QoS) profile of the call session.
		However, to support multiple flows with different QoS profiles, secondary PDP contexts with different QoS profiles may be activated in the call session.
		The secondary PDP context activation may be performed using messaging according to a protocol for reserving resources, such as the Resource Reservation Protocol (RSVP).
	wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/28160.010419&... (234 words)

	m-memo, asetuksia jne. (Site not responding. Last check: 2007-11-05)
		: a string parameter that identifies the MT in the address space applicable to the PDP.
		If the value is null or omitted, then a value may be provided by the TE during the PDP startup procedure or, failing that, a dynamic address will be requested.
		The read form of the command will continue to return the null string even if an address has been allocated during the PDP startup procedure.
	www.vlk.as /m-memo/?lng=0&yid=82&ryh=0&ots=972 (208 words)

	BOOK ANNOUNCEMENT
		The impasse and its consequences -- and steps away from that impasse -- are explored in a large number of projects and approaches.
		These include SOAR, CYC, PDP, situated cognition, subsumption architecture robotics, and the frame problems -- a general survey of the current research in AI and Cognitive Science emerges.
		The book characterizes and demonstrates this impasse, discusses a number of partial recognitions of and movements away from it, and then traces its consequences in a large number of projects and approaches within the fields.
	www.lehigh.edu /~mhb0/aiannounce.html (1219 words)

	UMTS, GPRS and CDMA
		Each PDP context is associated with a Network Service Access Point Identifier (NSAPI), and each NSAPI at most maps to one primary or secondary PDP Context.
		The purpose of this procedure is to establish an additional PDP context between the MS and the network for a specific Traffic Flow Template (TFT) and QoS profile on a specific NSAPI, when one or more PDP contexts has/have already been established for the particular PDP address.
		So during the automatic PDP context activation just discussed, the GGSN will have to register the users name and associate it with the temporary IP address just assigned.
	www.awardsolutions.com /research/faq.shtm (1564 words)

	Robert M. French homepage
		Our ability to see a particular object or situation in one context as being “the same as” another object or situation in another context is the essence of analogy-making.
		PDP models have been used to model a broad range of social psychological topics such as person perception, illusory correlations, cognitive dissonance, social categorization and stereotypes.
		In particular, the development of stereotypes within the context of this model will be discussed.
	www.ulg.ac.be /cogsci/rfrench.html (10238 words)

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