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WO2002013559A1 - Procede de gestion d'identificateurs de demande d'acces dans un systeme de communication - Google Patents

Procede de gestion d'identificateurs de demande d'acces dans un systeme de communication Download PDF

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Publication number
WO2002013559A1
WO2002013559A1 PCT/SE2001/001707 SE0101707W WO0213559A1 WO 2002013559 A1 WO2002013559 A1 WO 2002013559A1 SE 0101707 W SE0101707 W SE 0101707W WO 0213559 A1 WO0213559 A1 WO 0213559A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile station
access request
radio network
request identifier
cell
Prior art date
Application number
PCT/SE2001/001707
Other languages
English (en)
Inventor
Susanne Ahlstrand
Anders FURUSKÄR
Joakim Sorelius
Claes Tidestav
Arnaud VÉDRINE
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to AU2001280365A priority Critical patent/AU2001280365A1/en
Publication of WO2002013559A1 publication Critical patent/WO2002013559A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5084—Providing for device mobility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the invention relates to methods in a communication system. More in particular, the invention relates to management of access request identifiers.
  • GPRS General packet radio service
  • ETSI European Telecommunications Standards Institute
  • TIA Telecommunications Industry Association
  • PLMN public land mobile network
  • IP Internet protocol-based
  • GPRS offers air-interface transfer rates up to 115 kbit/s subject to mobile terminal capabilities and carrier interference. Even higher transfer rates are provided by the use of so called EDGE technology, i.e. Enhanced Data Rates for Global Evolution. EDGE technology can increase end user data rates up to 384 kbit/s, and _ potentially higher in high quality radio environments. Moreover, GPRS allows several users to share the same air-interface resources and enables operators to charge customers for wireless services based on the amount of transferred data instead of on connection time.
  • the current specifications of GPRS/EGPRS supports two types of uplink access methods, one-phase access and two-phase access, for providing a mobile station with radio resources in the uplink direction.
  • the proposal is for a mobile station to transmit the ARI on the existing uplink packet random access channel (PRACH) using the current GPRS 11-bit access burst message.
  • PRACH uplink packet random access channel
  • the ARI by definition, would then be unique on this PRACH.
  • the network Based on the ARI and the PRACH on which it was received, the network can uniquely map the received ARI to a communication context defining data received previously from the mobile station. Thus the mobile station does not need to retransmit data defining its access capabilities and the requested uplink resources.
  • the problem dealt with by the present invention is to provide a flexible way of managing access request identifiers.
  • One object of the invention is to provide a flexible way of managing access request identifiers.
  • Another object of the invention is to enable a radio network to control which mobile stations are assigned access request identifiers.
  • Still another object of the invention is to enable a radio network to control for how long access request identifiers remains assigned to mobile stations.
  • Yet another object of the invention is to enable a radio network to control assignment of request identifiers in dependence of the current number of available access request identifiers.
  • An advantage afforded by the invention is that access request identifiers can be managed in a flexible way. Another advantage afforded by the invention is that it enables a radio network to control which mobile stations are assigned access request identifiers and/or for how long access request identifiers remain assigned to mobile stations.
  • Yet another advantage of the invention is that a network operator is afforded the possibility to provide differented services to different subscriber categories.
  • Fig. 1 is a view illustrating an exemplary mobile telecommunications system in which the present invention can be implemented.
  • Fig. 2A is a signalling diagram illustrating one-phase access.
  • Fig. 2B is a signalling diagram illustrating two-phase access.
  • Fig. 3 is a signalling diagram illustrating ARI-based access.
  • Fig. 4 is a flow diagram illustrating an exemplary first method according to the invention.
  • Fig. 5 is a flow diagram illustrating an exemplary second method according to the invention.
  • Fig. 1 illustrates an exemplary mobile telecommunications system 2 in which the present invention can be implemented.
  • the system 2 depicted in the Fig. 1 conforms to the GSM specifications and supports GPRS and Enhanced GPRS (EGPRS) technology.
  • the mobile telecommunications system 2 includes a circuit-switched network 4, a packet-switched network 6, and a radio network 8 that is shared by the circuit-switched and packet-switched networks 4 and 6.
  • the circuit- switched network 4 is primarily used for voice applications, while the packet-switched network 6 is primarily used for data applications.
  • the circuit-switched network 4 can also support data communications, and the packet- switched network 6 can also support voice communications.
  • the circuit-switched network 4 includes a number of mobile services switching cente /visitor location registers (MSC/VLRs) 12. For purposes of simplifying the illustration, however, only one MSC/VLR 12 is shown. Each MSC/VLR 12 serves a particular geographic region and is used for controlling communications in the served region and for routing communications to other MSC/VLRs 12. The VLR portion of the MSC/VLR 12 stores subscriber information relating to mobile stations 10 that are currently located in the served region.
  • the circuit-switched network 4 further includes at least one gateway mobile services switching center (GMSC) 14 that serves to interconnect the circuit-switched network 4 with external networks, such as a public switched telephone network (PSTN) 16.
  • GMSC gateway mobile services switching center
  • the packet-switched network 6 includes a number of serving GPRS support nodes (SGSN) 18, which are used for routing and controlling packet data communications, and a backbone IP network 20.
  • SGSN serving GPRS support nodes
  • GGSN gateway GPRS support node 22 interconnects the packet-switched network 6 with an external IP network 24 or other external data networks.
  • the radio network 8 includes a plurality of cells. Each cell in the mobile telecommunications system 2 is served by a base station 26 that communicates with mobile stations 10 in the cell via an air interface 28.
  • the radio network 8 comprises a plurality of base stations 26 and a base station controller (BSC) 27, alternatively referred to as a Radio Network Controller (RNC) , controlling said plurality of base stations 26.
  • BSC base station controller
  • RNC Radio Network Controller
  • signals are routed from the MSC/VLR 12, to the base station controller 27 via an interface 34, to the base station 26 for the cell in which the target mobile station 10 is currently located, and over the air interface 28 to the mobile station 10.
  • signals are routed from the SGSN 18, to the base station controller 27 via an interface 35, to the base station 26 for the cell in which the target mobile station 10 is currently located, and over the air interface 28 to the mobile station 10.
  • Each mobile station 10 is associated with a home location register (HLR) 30.
  • the HLR 30 stores subscriber data for the mobile station 10 that is used in connection with circuit- switched communications and can be accessed by the MSC/VLRs 12 to retrieve subscriber data relating to circuit-switched services.
  • Each mobile station 10 is also associated with a GPRS register 32.
  • the GPRS register 32 stores subscriber data for the mobile station 10 that is used in connection with packet- switched communications and can be accessed by the SGSNs 18 to retrieve subscriber data relating to packet-switched services.
  • the radio network 8 To send data on the downlink, i.e. from the radio network 8 to mobile stations 10, the radio network 8 knows when new packets need to be transmitted to each user. Accordingly, the base station transmits data destined for a particular user as part of a temporary block flow (TBF) .
  • TBF is a connection used by the base station and the user's mobile station to support the unidirectional transfer of packet data on a packet data physical channel.
  • the radio network assigns each TBF a temporary flow identity (TFI) value, which uniquely identifies the TBF, thereby distinguishing the TBF from other TBFs destined for other mobile stations.
  • TBF temporary block flow
  • each individual mobile station that is multiplexed on a specific packet data physical channel is able to determine which data packets are meant for that mobile station.
  • the base station is able to address data packets to particular mobile stations using the appropriate TFI value.
  • the uplink portion i.e. from the radio network 8 to mobile stations 10, of the communication, however, the situation is more cumbersome because the radio network does not know which mobile stations need to send data packets unless and until the mobile stations notify the base station that they have data to be sent.
  • a mobile station that needs uplink resources informs the base station that it has data packets to send by sending a message on a random access channel (RACH) or a packet RACH (PRACH), which are control channels used only on the uplink to request GPRS resources.
  • RACH random access channel
  • PRACH packet RACH
  • the current specifications of GPRS/EGPRS supports two types of uplink access methods, one-phase access and two-phase access, for providing a mobile station with radio resources in the uplink direction.
  • Fig. 2A illustrates the one-phase access method.
  • the mobile station 10 requiring uplink radio resources initiates an uplink packet transfer, i.e. a TBF, by transmitting a Packet Channel Request message S31 to the radio network 8 on a packet random access channel (PRACH) of the cell in which the mobile station 10 is located.
  • the Packet Channel Request message S31 which is only a very short access burst of 8 or 11 bits, includes a random number for identification purposes.
  • the radio network 8 grants the one-phase access, the radio network 8 responds by transmitting a Packet Uplink Assignment message S32 to the mobile station 10 on a packet access grant channel (PAGCH) associated with the packet random access channel.
  • PAGCH packet access grant channel
  • the Packet Uplink Assignment message S32 includes either a Dynamic Allocation Struct or a Fixed Allocation Struct. Parameters in these structures describe the resources the mobile station 10 has been allocated for uplink transfer of RLC data blocks.
  • the Packet Uplink Assignment message S32 also includes the random number the mobile station 10 included in its Packet Channel Request message S31.
  • the mobile station 10 When the mobile station 10 receives a Packet Uplink Assignment message S32 in which its random number is included, the mobile station 10 switches to the assigned packet data channel (PDCH) . In case of Dynamic or Extended Dynamic Allocation, the mobile station 10 waits for its Uplink State Flag (USF) value to appear in the corresponding downlink transmissions, and then starts transmitting. For Fixed Allocation, the mobile station 10 switches to the assigned packet data channel at the first frame in the allocation bitmap, and starts transmitting.
  • the so called Temporary Logical Link Identifier (TLLI) used to provide unique identification of the mobile station 10 within the SGSN 18, is not transmitted during TBF setup. Therefore, the mobile station 10 is required to include its TLLI in all transmissions of RLC data blocks S33, until it receives a Packet Uplink Ack/Nack message S34 that confirms reception of its TLLI. When the mobile station 10 receives the Packet Uplink Ack/Nack that contains the TLLI of the mobile station 10, the mobile station 10 may continue to send RLC data blocks S33 without the TLLI.
  • TLLI Temporary Logical Link Identifier
  • Fig. 2B illustrates the so called two-phase access method.
  • the mobile station 10 requiring uplink radio resources initiates an uplink packet transfer, i.e. a TBF, by transmitting a Packet Channel Request message (burst) S31 to the radio network 8 on a PRACH of the cell in which the mobile station 10 is located.
  • a Packet Channel Request message burst
  • the radio network 8 grants the two-phase access by transmitting a first Packet Uplink Assignment message S32 to the mobile station 10 on the PAGCH associated with the PRACH.
  • the first Packet Uplink Assignment message S32 includes allocation of a single radio block on a PDCH.
  • the mobile station 10 then transmits a Packet Resource Request message S35 in the allocated single radio block.
  • this message includes the TLLI to identify the mobile station 10.
  • the radio network 8 responds to the Packet Resource Request message S35 by sending a second Packet Uplink Assignment message S32 in a packet associated control channel (PACCH) on the packet data channel on which the mobile station 10 sent the Packet Resource Request message S35.
  • PACCH packet associated control channel
  • the second Packet Uplink Assignment message S32 includes either a Dynamic Allocation Struct or a Fixed Allocation Struct, thus providing physical resources for the mobile station 10 to transmit RLC data blocks. Also, the second Packet Uplink Assignment message S32 includes the TLLI of the mobile station 10. When the mobile station 10 receives its TLLI in a Packet Uplink Assignment message S32, it acts on the assignment and switches to the assigned PDCH.
  • EGPRS EGPRS standard release 00
  • real time applications e.g., voice-over- IP (VoIP) will be supported.
  • VoIP voice-over- IP
  • QoS Quality of Service
  • Certain users e.g., those utilizing real time voice applications will have a very high demand for the availability of transmission resources, whereas users who transmit short messages or electronic mail will be satisfied with a lower availability of transmission resources.
  • UMTS Universal Mobile Telecommunications System
  • Conversational class traffic is intended for traffic which is very delay sensitive while background class traffic is the most delay insensitive traffic class.
  • Conversational and streaming classes are intended for real time traffic flows and interactive and background classes are intended for Internet applications (e.g., WWW, E-mail, Telnet, FTP, etc.).
  • the proposal is for a mobile station to transmit the ARI on the existing PRACH using the current GPRS 11-bit access burst message.
  • the ARI by definition, would then be unique on this PRACH.
  • the network can uniquely map the received ARI to a communication context defining data received previously from the mobile station. Thus the mobile station does not need to retransmit data defining its access capabilities and the requested uplink resources .
  • Fig. 3 illustrates how the proposed ARI based resource request procedure is applied.
  • the radio network 8 When the mobile station 10 initially accesses the radio network 8 to transfer data, the radio network 8 has no ARI assigned to the mobile station 10, and a two-phase access as illustrated in Fig. 2B is necessary (alternatively a one-phase access as described above in connection with Fig. 2A may also be used) .
  • the mobile station 10 transmits a Packet Channel Request message S31 to the radio network 8
  • the radio network 8 responds by transmitting a first Packet Uplink Assignment message S32 including a single radio block allocation to the mobile station 10 and the mobile station proceeds by sending a Packet Resource Request message S35 to the radio network 8 in the allocated single radio block.
  • the radio network 8 assigns an ARI to the mobile station 10 that uniquely (together with the assigned PRACH) identifies the communication context being established.
  • the radio network 8 informs the mobile station 10 of the assigned ARI by including said ARI in a second Packet Uplink Assignment message S32.
  • the Packet Uplink Assignment message format is modified to include an optional ARI.
  • the mobile station 10 After the mobile station 10 has completed its first uplink TBF and while the mobile station 10 is assigned an ARI, it might use the assigned ARI to perform fast access procedures as illustrated in Fig. 3 in order to initiate additional uplink TBFs .
  • the mobile station 10 transmits a Packet Channel Request message S31 including the assigned ARI on the PRACH.
  • the radio network 8 Upon receiving the ARI included in the Packet Channel Request message S31, the radio network 8 has complete knowledge of the context (quality of service requirements, multi slot capabilities etc) in which the bearer shall operate. The radio network 8 can then immediately assign the necessary resources to the mobile station 10.
  • the radio network 8 transmits a Packet Uplink Assignment message S32 to the mobile station 10 including information on the assigned resources and the ARI received from the mobile station 10 in the Packet Channel Request message S31.
  • the mobile station 10 receives the Packet Uplink Assignment message S32 and recognizes from the included ARI that the message S32 is a response to the previously sent Packet Channel Request message S31. Thus, the mobile station 10 starts transmitting data in the uplink using the assigned resources.
  • the ARI is 8-bits long implying that 256 unique identites can simultaneously be assigned on one PRACH.
  • the applicant recognizes that the ARI may become a scarce resource, in particular in future packet data systems where each mobile station can be allocated many TBFs simultaneously (and thus many ARIs) .
  • it is important to manage allocation of ARIs in a proper way.
  • the present invention provides a way of managing access request identifiers in a communication system comprising a radio network, such as the communication system 2 illustrated in Fig.
  • Fig. 4 illustrates an exemplary first method according to the invention for managing access request identifiers associated with a first packet random access channel used by mobile stations in a first cell of a radio network to request allocation of uplink transmision resources in the first cell.
  • a first access request identifier is assigned to a first mobile station operating in the first cell by associating the first access request identifier with data defining a communication context for the first mobile station.
  • the data defining the communication context may e.g. be data defining a so called Radio Access Bearer.
  • a downlink signal including the assigned first access request identifier is sent from the radio network to the first mobile station informing the first mobile station of the assignment of the first access request identifier.
  • the first access request identifier is released from the first mobile station by disassociating the first access request identifier and the data defining the communication context.
  • the moment in time when the first access request identifier is released is selected by the radio network according to a predetermined rule.
  • the first mobile station continues to operate in a "ready state" within the first cell after release of the first access request identifier, i.e. the release of the first access request identifier is not triggered by the mobile station changing cell or entering a "standby" state.
  • ready state means a state in which the first mobile station informs the communication system when it performs a cell update
  • standby state means a state in which the first mobile station does not report to the network each time it changes cell.
  • the radio network may, upon termination of said assignment, transmit a downlink signal to the first mobile station informing the first mobile station ' that the assignment of the first access request identifier is terminated.
  • the radio network could transmit a downlink signal to the first mobile station including information defining a time period during which the first access request identifier remains assigned to the mobile station. This signal could e.g. be sent simultaneous with or immediately after the downlink signal informing the first mobile station of the assignement of the first access request identifier.
  • Fig. 5 illustrates an exemplary second method according to the invention for managing access request identifiers associated with a first packet random access channel used by mobile stations in a first cell of a radio network to request allocation of uplink transmision resources in the first cell.
  • step 51 it is decided, according to a predetermined rule, whether an access request identifier should be assigned to a first mobile station operating in the first cell.
  • a first access request identifier is assigned to the first mobile station at step 52 by associating the first access request identifier with data defining a communication context, e.g. data defining a Radio Access Bearer, for the first mobile station.
  • the radio network informs the first mobile station of the assignment of the first radio access identifier at step 53 by transmitting a downlink signal including the assigned first access request identifier from the radio network to the first mobile station.
  • the radio network decides whether an access request identifier should be assigned to the first mobile station and, provided an access request identifier is assigned to the first mobile station, the radio network selects when the assigned access request identifier should be released.
  • the predetermined rule for deciding whether an access request identifier should be assigned and the predetermined rule for selecting when to release an assigned access request identifier may both be based on at least one of the following factors:
  • the radio network may assign access request identifiers to all active mobile stations within the first cell and the mobile stations may be allowed to retain the assigned request identifiers for relatively long periods of time, while in a situation where the current number of unassigned request indentifiers is small, the radio network may decide only to assign access request identifiers to mobile stations operated by subscribers having premium subscriptions and/or select only to allow access request identifiers remain assigned to mobile stations for short periods of time .
  • the radio network may decide only to assign access request identifiers to mobile stations associated with quality of service profiles indicating that said mobile stations are operated by premium service subscribers and/or the radio network may select to allow access request identifiers remain assigned to said mobile stations longer than for mobile stations operated by ordinary service subscribers.
  • the radio network may assess the amount of data a mobile station has transmitted recently and decide to assign an access request identifier and/or select to allow the access request identifier remain assigned to the mobile station for a long period of time if the mobile station has transmitted a lot of data, and hence is likely to continue transmitting more data, while the radio network may decide not to assign any access request identifier if the mobile station has only transmitted a small amount of data.
  • the radio network may assess the mobility characteristics of a mobile station, i.e. whether the mobile station exhibits a stationary or roaming behaviour, when deciding whether to assign an access request identifier and/or selecting for how long an access request identifier may remain assigned to the mobile station.
  • the radio network may decide to assign an access request identifier for a long period of time to a mobile station exhibiting a stationary behaviour while deciding not to assign any access request identifier or selecting to allow an access request identifier remain assigned only for a short period of time if a mobile station exhibits a roaming behaviour.
  • the radio network may assess the equipment characteristics of a mobile station when deciding whether to assign an access request identifier and/or select for how long an access request identifier may remain assigned to the mobile station.
  • the radio network may e.g. assign access request identifiers for long periods of time to mobile stations in the form of network cards attached to computers which are expected to be stationary and transmit and receive data in an interactive manner over a long period of time.
  • deciding whether access request identifier should be assigned to mobile station and selecting for how long access request identifier should remain assigned to mobile stations are handled by a base station controller/radio network controller node in the radio network. However, these tasks may also be handled by base stations in the radio network.
  • access request identifiers assigned to mobile stations are not only released in accordance with the invention but also whenever the mobile stations changes cell in ready state or enters a standby state.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de gestion des identificateurs de demande d'accès d'un système de communication comprenant un réseau radio. Ces identificateurs de demande d'accès sont associés à un premier canal d'accès aléatoire de paquets utilisé par les stations mobiles d'une première cellule pour demander l'affectation de ressources de transmission liaison montante lors de la première opération. Le réseau radio commande les stations mobiles qui se voient affecter des identificateurs de demande d'accès et/ou le temps d'affectation des identificateurs de demande d'accès aux stations mobiles individuelles.
PCT/SE2001/001707 2000-08-07 2001-08-03 Procede de gestion d'identificateurs de demande d'acces dans un systeme de communication WO2002013559A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001280365A AU2001280365A1 (en) 2000-08-07 2001-08-03 A method of managing access request identifiers in a communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0002852A SE0002852L (sv) 2000-08-07 2000-08-07 Förfarande i ett kommunikationssystem
SE0002852-2 2000-08-07

Publications (1)

Publication Number Publication Date
WO2002013559A1 true WO2002013559A1 (fr) 2002-02-14

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AU (1) AU2001280365A1 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783963A1 (fr) * 2005-11-02 2007-05-09 Siemens S.p.A. Méthode pour l'établisement rapide TBFs dans la liaison montante
US7904088B2 (en) 2003-08-26 2011-03-08 Vlora Rexhepi Identifying network resources for packet-switched services

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305081A (en) * 1995-09-01 1997-03-26 Motorola Inc Reducing messaging in a TDMA communications system
WO1999044379A1 (fr) * 1998-02-27 1999-09-02 Telefonaktiebolaget Lm Ericsson (Publ) Categorisation d'acces multiple destinee a une station mobile
WO1999052307A1 (fr) * 1998-04-03 1999-10-14 Telefonaktiebolaget Lm Ericsson (Publ) Acces et allocation de ressources radio flexibles dans un systeme universel de telecommunications mobiles (sutm)
WO2000079808A2 (fr) * 1999-06-21 2000-12-28 Telefonaktiebolaget Lm Ericsson (Publ) Procede de transfert de stations mobiles dans un reseau de radiotelecommunication a service de radio paquet general (gprs)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305081A (en) * 1995-09-01 1997-03-26 Motorola Inc Reducing messaging in a TDMA communications system
WO1999044379A1 (fr) * 1998-02-27 1999-09-02 Telefonaktiebolaget Lm Ericsson (Publ) Categorisation d'acces multiple destinee a une station mobile
WO1999052307A1 (fr) * 1998-04-03 1999-10-14 Telefonaktiebolaget Lm Ericsson (Publ) Acces et allocation de ressources radio flexibles dans un systeme universel de telecommunications mobiles (sutm)
WO2000079808A2 (fr) * 1999-06-21 2000-12-28 Telefonaktiebolaget Lm Ericsson (Publ) Procede de transfert de stations mobiles dans un reseau de radiotelecommunication a service de radio paquet general (gprs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7904088B2 (en) 2003-08-26 2011-03-08 Vlora Rexhepi Identifying network resources for packet-switched services
EP1783963A1 (fr) * 2005-11-02 2007-05-09 Siemens S.p.A. Méthode pour l'établisement rapide TBFs dans la liaison montante
WO2007051578A1 (fr) * 2005-11-02 2007-05-10 Nokia Siemens Networks Gmbh & Co. Kg Procede d'etablissement anticipe de tbf sur la liaison montante
KR101298178B1 (ko) 2005-11-02 2013-09-16 노키아 지멘스 네트웍스 게엠베하 운트 코. 카게 업링크 ｔｂｆ들의 얼리 설정을 위한 방법
US8804629B2 (en) 2005-11-02 2014-08-12 Cellular Communications Equipment Llc Method for the early establishment of uplink TBFs
US9078168B2 (en) 2005-11-02 2015-07-07 Cellular Communications Equipment Llc Method for the early establishment of uplink TBFs

Also Published As

Publication number Publication date
AU2001280365A1 (en) 2002-02-18
SE0002852L (sv) 2002-02-08
SE0002852D0 (sv) 2000-08-07

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