WO2003103235A1 - Considering mobile station capability in negotiating quality of service for packet switched services - Google Patents
Considering mobile station capability in negotiating quality of service for packet switched services Download PDFInfo
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- WO2003103235A1 WO2003103235A1 PCT/SE2003/000590 SE0300590W WO03103235A1 WO 2003103235 A1 WO2003103235 A1 WO 2003103235A1 SE 0300590 W SE0300590 W SE 0300590W WO 03103235 A1 WO03103235 A1 WO 03103235A1
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- Prior art keywords
- mobile station
- packet
- mobile
- supported
- capability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/15—Flow control; Congestion control in relation to multipoint traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
- H04L47/762—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/808—User-type aware
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/822—Collecting or measuring resource availability data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/824—Applicable to portable or mobile terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/826—Involving periods of time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Definitions
- the present invention relates to packet data communications in cellular wireless communications.
- GSM Global System for Mobile
- GPRS General Packet Radio Services
- GPRS is a packet switched system that uses the same physical carrier as the GSM cellular communication system and provides the same coverage as GSM.
- the GPRS radio interface is therefore based on a Time Division Multiple Access (TDMA) system with 200 kHz carriers divided into 8 time slots with Gaussan Minimum Shift Keying (GMSK) modulation.
- TDMA Time Division Multiple Access
- GMSK Gaussan Minimum Shift Keying
- Each time slot typically serves a number of users, and one user can also be allocated more than one time slot to increase throughput over the air.
- the GPRS specification includes a number of different coding schemes that may be used depending on the quality of the radio carrier.
- 8-Phase Shift Keying 8-Phase Shift Keying
- EVS Enhanced GPRS
- Additional coding schemes developed for this 8-PSK offer efficient link adaptation, i.e., adapting coding and/or modulation based on present signal quality.
- QoS Quality of Service
- POP Packet Data Protocol
- PFC Packet Flow Context
- a problem with this PFC process is that the BSS is unaware of the mobile station's capabilities when negotiating the quality of service for the packet flow context. Absent mobile station capability information, (i.e., the radio capabilities of the mobile station), the BSS does not know what quality of service the mobile station is capable of supporting. As a result, the quality of service determined by the BSS for the packet flow context for the current cell may not be correct.
- the mobile station must be able to support those particular bit rates. If the BSS accepts too high of a bit rate, that high bit rate may not be supported by the mobile station when the data transmission begins for the packet flow. This may lead to a renegotiation of the quality of service, or the user may perceive an unacceptable quality of service.
- a renegotiation of the quality of service is not acceptable.
- An example is a streaming service where a bit rate coding is selected at the start of the session. The selected bit rate coding is part of the quality of service requested at the PDP context activation. If the GPRS network accepts that quality of service, the streaming application will start running using the accepted bit rate coding. Because the mobile station can not support that bit rate coding, the BSS must renegotiate the quality of service at the actual start of the data transmission over the radio interface. In some situations, the mobile station application may not be able to accommodate the changed bit rate coding, leading possibly to disconnection of the session.
- RAN radio access network
- the RAN uses the mobile station capabilities in evaluating whether a requested quality of service or a packet communication involving the mobile station can be supported.
- the mobile station capabilities may include one or more of the following: one or more types of radio access technology supported by the mobile station, a power capability supported by the mobile station, a time slot class supported by the mobile station, and the type of mobile packet radio service supported by the mobile station.
- the mobile station sends a first message to a packet service node requesting a packet communication including a requested quality of service and the mobile station capability.
- the packet service node sends a second message to the RAN that includes the mobile station capability.
- the RAN uses that mobile station capability in evaluating whether the requested quality of service can be supported for a packet flow, e.g., when creating a packet flow context.
- the RAN may also consider other parameters when creating the packet flow context, e.g., a condition of the cell in which the mobile station is located.
- the base station system allocates radio resources for the packet flow. If there is a subsequent change in radio resources that might warrant or otherwise trigger a change in quality of service for the packet flow, a mobile station capability may also be used in determining whether to change the quality of service for the packet flow.
- the packet service node is part of a General Packet Radio Services (GPRS) network and is a Serving GPRS Support Node (SGSN).
- the RAN is a Base Station System (BSS) which is part of a Global System for Mobile communications (GSM).
- BSS Base Station System
- the first message is an Activate Packet Data Protocol (PDP) Context Request message
- the second message is a Create Base Station System (BSS) Packet Flow Context message sent from the SGSN to the BSS.
- the first message could be a routing area update message.
- Fig. 1 is a diagram for a mobile communication system that supports both circuit-switched and packet-switched communications
- Fig. 2 is a flowchart diagram entitled Mobile Station Capability and Packet- Switched Service
- Fig. 3 is a diagram of a GSM/GPRS-based mobile communication system
- Fig. 4 illustrates various data communication protocols employed between different nodes in the GPRS data communications network shown in Fig. 3;
- Fig. 5 is an example signaling diagram showing messages communicated between nodes in Fig. 3 for activating a PDP context for a packet communication involving a mobile station.
- Fig. 1 illustrates a mobile communication system that includes both circuit-switched and packet-switched mobile services.
- a Mobile Station (MS) 2 communicates over a radio interface with a Base Station (BS) 3.
- BS Base Station
- One or more base stations are coupled to a Radio Access Network (RAN) that includes a RAN control node 4.
- the RAN control node 4 is coupled to a circuit-switched services node 5 and a packet-switched services node 7.
- the circuit-switched services 5 is coupled to a circuit-switched network 6, and the packet-switched services node 7 is coupled to a packet-switched network 8.
- a Packet Data Protocol (PDP) context When the mobile station 2 requests a packet-switched service, a Packet Data Protocol (PDP) context must be established between the mobile station 2 and the packet-switched services node 7.
- PDP context is not meant to be limiting but rather encompasses any initialization procedure which permits a mobile station to conduct packet data communications.
- PDP Packet Data Protocol
- a first step SI the mobile station requests a PDP context activation from the packet-switched process service node.
- the mobile station includes one or more of its capabilities along with the requested quality of service.
- the packet-switched service node informs the Radio Access Network (RAN) control node of the mobile station capabilities (step S2).
- the RAN control node stores the mobile station capabilities and determines whether attributes in the requested quality of service are supported by the mobile station capabilities. Based on this information, the RAN control node 4 creates a Packet Flow Context (PFC) for this packet flow (step S3).
- PFC Packet Flow Context
- the RAN control node 4 uses the mobile station capabilities to set up appropriate radio resources for the packet flow (step S4). After PFC creation, if there is a change in resources, the RAN control node 4 may send a message to the packet-switched services node to modify the quality of service and the mobile station's packet flow context (step S5).
- the packet flow context for each packet flow is stored in the RAN control node 4 in accordance with a pre-defined timer. If the timer elapses and the mobile station wants to start a new session, the above-described procedure repeats.
- a mobile station 12 including a computer terminal 14 and a mobile radio 16, communicates over a radio interface with a base station 32.
- Each base station 32 is located in a corresponding cell 30.
- Multiple base stations 32 are connected to a Base Station Controller (BSC) 34 which manages allocation/deallocation of radio resources and controls handovers of mobile stations from one base station to another.
- BSC Base Station Controller
- a base station controller and its associated base stations are referred to as a base station system (BSS).
- the BSC 34 is connected to a Mobile Switching Center (MSC) 36 through which circuit-switched conne ⁇ ions are set up with other networks such as the Public-Switched Telephone Network (PSTN), Integrated Services Digital Network (ISDN), etc.
- MSC Mobile Switching Center
- PSTN Public-Switched Telephone Network
- ISDN Integrated Services Digital Network
- the MSC 36 is also connected via a Signalling System 7 (SS7) network 40 to a Home Location Register (HLR) 42, a Visitor Location Register (VLR) 44, and an Authentication Center (AUC) 46.
- HLR Home Location Register
- VLR Visitor Location Register
- AUC Authentication Center
- Each BSC 34 connects to a GPRS network 51 including a Serving GPRS
- a Gateway GPRS Support Node (GGSN) 54 acts as a logical interface to external data packet networks, such as the IP data network 56.
- SGSN 50 and GGSN 54 are connected by an ttu-PLMN IP backbone 52.
- packets are encapsulated at an originating GPRS support node and decapsulated at the destination GPRS support node. This encapsulation/decapsulation at the IP level between the SGSN 50 and the GGSN 54 is called "tunneling" in GPRS.
- the GGSN 54 maintains routing information used to tunnel data packets to the SGSN 50 currently serving the mobile station.
- Tunnel Protocol enables different packet data protocols to be employed even when those protocols are not supported by all the SGSNs. All GPRS user related data needed by the SGSN to perform the routing and data transfer functionality is accessed by the HLR 42 via the SS7 network 40.
- the HLR stores routing information and maps the mobile stations identifier to one or more Packet Data Protocol (PDP) addresses as well as mapping each PDP address to one ore more GGSN.
- PDP Packet Data Protocol
- the mobile host 12 Before a mobile host can send packet data to a corresponding external host, like the Internet service provider (ISP) 58, the mobile host 12 has to connect to the GPRS network 51 to mak its presence known. It does this by first performing an "attach" procedure and then creating a Packet Data Protocol (PDP) context, which establishes a relationship with a gateway GGSN 54 towards the external network that the mobile host is accessing. The attach procedure is carried out between the mobile host 12 and the SGSN 50 to establish a logical link. As a result, a temporary logical link identity is assigned to the mobile host 12. A PDP context is established between the mobile host and the GGSN 54. The selection of GGSN 54 is based on the name of the external network to be reached. If a mobile station is already attached to the network, the PDP context activation procedure may be initiated by the system.
- PDP Packet Data Protocol
- One or more application flows may be established for a single PDP context through negotiations with the GGSN 54.
- An application flow corresponds to a stream of data packets distinguishable as being associated with a parti ilar host application.
- An example application flow is an electronic mail message from the mobile host to a fixed terminal.
- Another example application flow is a link to a particular Internet Service Provider (ISP) to download a graphics file from a web site. Both of these appHcation flows are associated with the same mobile host and the same PDP context.
- ISP Internet Service Provider
- Packet-switched data communications are based on specific protocol procedures, which are typically separated into different layers.
- Fig. 4 shows a GPRS "transmission plane" that is modeled with multi-layer protocol stacks. Between the
- the GPRS tunneling protocol tunnels the PDUs through the GPRS backbone network 52 by adding routing information.
- the GTP header contains a tunnel end point identifier for point-to-point and multicast packets as well as a group identity for point-to-multipoint packets. Additionally, a type field that specifies the PDU type and a quality of service profile associated with a PDP context session are included.
- TCP/UDP Transmission Control Protocol/User Diagram Protocol
- IP Internet Protocol
- Ethernet, frame relay (FR), or asynchronous transfer mode (ATM)-based protocols may be used for the link and physical layers depending on the operator's network architecture.
- a SubNetwork Dependent Convergence Protocol maps network level protocol characteristics onto the underlying logical link control (LLC) and provides functionalities like multiplexing of network layer messages onto a single virtual logical connection, ciphering, segmentation, and compression.
- a Base Station System GPRS Protocol (BSSGP) is a flow control protocol, which allows the base station system to start and stop PDUs sent by the SGSN. This ensures that the BSS is not flooded by packets in case the radio link capacity is reduced, e.g., because of fading and other adverse conditions. Routing and quality of service information are also conveyed. Quality of Service information is conveyed using Packet Flow Context (PFC) procedures.
- PFC Packet Flow Context
- the PFC procedure may be initiated by the SGSN or the BSS.
- the SGSN initiates the procedure by sending a Create BSS PFC message to the BSS.
- the BSS initiates the procedure by sending a Download BSS PFC message to the SGSN.
- the BSS may request a modification of an existing PFC by sending a Modify BSS PFC message to the SGSN.
- Frame relay and ATM may be used to relay frames of PDUs over the physical layer.
- Radio communication between the mobile station and the GPRS network covers physical and data link layer functionality.
- the physical layer is split up into a physical link sublayer (PLL) and a physical RF sublayer (RFL).
- RFL performs modulation and demodulation of the physical waveforms and specifies carrier frequencies, radio channel structures, and raw channel data rates.
- PLL provides services for information transfer over the physical radio channel and includes data unit framing, data coding, and detection/correction of physical medium transmission areas.
- the data link layer is separated into two distinct sublayers.
- the radio link control/medium access control (RLC/MAC) sublayer arbitrates access to the shared physical radio medium between multiple mobile stations and the GPRS network. RLC/MAC multiplexes data and signaling information, performs contention resolution, quality service control, and error handling.
- the logical link control (LLC) layer operates above the MAC layer and provides a logical link between the mobile host and the SGSN.
- Ctoality of service corresponds to the goodness (quality) with which a certain operation (service) is performed.
- Certain services like multimedia applications or a simple phone call need guarantees about accuracy, dependability, and speed of transmission.
- “best efforts" are employed, and no special attention is paid to delay or throughput guarantees.
- quality of service parameters can be characterized qualitatively in three services classes including deterministic (used for hard, real-time application), statistical (used for soft real-time applications), and best effort (everything else where no guarantees are made).
- Quantitative parameters may include throughput (such as the average data rate or peak data rate), reliability, delay, and jitter corresponding to the variation delay between a minimum and maximum delay time that a message experiences.
- Fig. 5 illustrates an example PDP context activation signaling flow where the mobile station capabilities are taken into account when the Base Station System (BSS) creates a packet flow context.
- the Activate PDP Context Request message from the mobile station to the SGSN includes both a requested quality of service and Radio Access Capabilities (RAC) of the mobile station.
- the mobile station may have already sent the mobile station capabilities in a routing area update message to the SGSN.
- An example mobile station capability is which access type technologies are supported by the mobile station. For example, different access type technologies might operate in different frequency ranges.
- RACs may include: the RF power capability of the mobile station, whether the mobile station supports a GPRS or an EGPRS multi-slot class, whether the mobile station supports a GPRS or an EGPRS extended dynamic allocation capability, whether the mobile station supports a Dual Transfer Mode (DTM) GPRS or Dual Transfer Mode EGPRS multi-slot sub-class, whether the mobile station supports 8PSK power capability, and whether the mobile station supports a GERAN (GSM EDGE Radio Access Network) feature package 1 including functionality for Extended Uplink Temporary Block Flow (TBF) Mode and Network-Assisted Cell Change.
- DTM Dual Transfer Mode
- EGPRS multi-slot sub-class whether the mobile station supports 8PSK power capability
- GERAN GSM EDGE Radio Access Network
- TBF Extended Uplink Temporary Block Flow
- a CS service e.g., speech
- PS service e.g., web-browsing.
- the Temporary Block Flow is the packet connection between the mobile station and the Radio Access Network.
- the Extended Uplink TBF mode maintains the Uplink TBF during inactive periods (no packets to send) in order to be prepared if more data is to be sent. That way, the TBF need not be set up again which saves set up time, e.g., roughly 200ms.
- other mobile station RACs may be used.
- the SGSN stores the one or more mobile station RACs and sends a Create PDP Context message to the GGSN along with the requested Quality of Service (QoS).
- the GGSN returns a Create PDP Context Response message along with the granted quality of service.
- the SGSN sends a Create BSS Packet Flow Context (PFC) message to the BSS and includes an Aggregate BSS Quality of Service Profile (ABQP) as well as a mobile station RAC.
- the message contains one element called MS RAC that includes all different RACs of the mobile station.
- the BSS may perform a call admission control algorithm.
- the BSS must check whether this guaranteed bit rate can be ensured. More specifically, the BSS determines the cell in which the PFC is created. That cell is known because the Create BSS PFC message is associated with the cell in which the mobile station is currently located. The BSS also must know the cell capabilities (e.g., GPRS or EGPRS, etc.) and the cell load conditions, which are available in the BSS because the BSS controls the radio resources for all mobile stations in a cell. Finally, the BSS must know the mobile station RAC, (e.g., GPRS or EGPRS, multi- slot class, etc.), to determine what throughput (and/or other functions) can be supported by the mobile station.
- the mobile station RAC e.g., GPRS or EGPRS, multi- slot class, etc.
- the BSS checks the radio resources to see whether the guaranteed bit rate may be fulfilled with the indicated GPRS or EGPRS multi- slot class. If there are sufficient available radio resources, the BSS accepts the requested quality of service. If there are not enough radio resources, the BSS may accept the PFC but with a modified lower quality of service, or may not accept the PFC at all.
- the BSS sends a BSS PFC Acknowledgement (ACK) or Negative ACK (NACK) to the SGSN.
- ACK BSS PFC Acknowledgement
- NACK Negative ACK
- the SGSN completes the PDP context messaging process by sending an Activate PDP Context Accept message to the mobile station with the determined quality of service profile.
- the BSS may send a modified BSS PFC to the SGSN to upgrade/downgrade the quality of service.
- the mobile station radio access capability may be used to determine the appropriateness of such an upgrade or down-grade quality of service.
- an accurate PFC can be created from the beginning of a session because all the facts needed such as mobile station radio access capabilities, cell capabilities, current cell load condition, and the requested Quality of Service are known by the BSS.
- the response message to the SGSN and the mobile station includes the level of Quality of Service that it is possible to achieve in view of the mobile station capabilities. This gives the rest of the system, (e.g., applications), a chance to adapt so that the end-user receives a service in accordance with the achievable Quality of Service. Since an accurate PFC is created from the start, there is less renegotiation, and hence, a lower signaling load on the interface between the SGSN and the BSS. By storing the mobile station radio access capabilities in the BSS, any re-negotiation of the Quality of Service during an ongoing session can be made in a correct way.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03721191A EP1497959B1 (en) | 2002-04-15 | 2003-04-11 | Considering mobile station capability in negotiating quality of service for packet switched services |
DE60314860T DE60314860T2 (en) | 2002-04-15 | 2003-04-11 | CONSIDERATION OF MOBILITY CAPABILITY IN PUBLIC SERVICE QUALIFICATION |
US10/510,470 US8274963B2 (en) | 2002-04-15 | 2003-04-11 | Considering mobile station capability in negotiating quality of service for packet switched services |
AU2003224533A AU2003224533A1 (en) | 2002-04-15 | 2003-04-11 | Considering mobile station capability in negotiating quality of service for packet switched services |
US13/584,482 US8588218B2 (en) | 2002-04-15 | 2012-08-13 | Considering mobile station capability in negotiating quality of service for packet switched services |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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SE0201143A SE0201143D0 (en) | 2002-04-15 | 2002-04-15 | Packet switched Services |
SE0201143-5 | 2002-04-15 |
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US10510470 A-371-Of-International | 2003-04-11 | ||
US13/584,482 Continuation US8588218B2 (en) | 2002-04-15 | 2012-08-13 | Considering mobile station capability in negotiating quality of service for packet switched services |
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WO2003103235A1 true WO2003103235A1 (en) | 2003-12-11 |
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PCT/SE2003/000590 WO2003103235A1 (en) | 2002-04-15 | 2003-04-11 | Considering mobile station capability in negotiating quality of service for packet switched services |
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EP (1) | EP1497959B1 (en) |
AT (1) | ATE367035T1 (en) |
AU (1) | AU2003224533A1 (en) |
DE (1) | DE60314860T2 (en) |
ES (1) | ES2290453T3 (en) |
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WO (1) | WO2003103235A1 (en) |
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Also Published As
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ES2290453T3 (en) | 2008-02-16 |
EP1497959B1 (en) | 2007-07-11 |
DE60314860D1 (en) | 2007-08-23 |
DE60314860T2 (en) | 2008-03-13 |
AU2003224533A1 (en) | 2003-12-19 |
US8588218B2 (en) | 2013-11-19 |
US8274963B2 (en) | 2012-09-25 |
US20120307784A1 (en) | 2012-12-06 |
US20060165027A1 (en) | 2006-07-27 |
SE0201143D0 (en) | 2002-04-15 |
ATE367035T1 (en) | 2007-08-15 |
EP1497959A1 (en) | 2005-01-19 |
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