WO2009121663A1 - Dispositif et procédé permettant de fournir un service pour un terminal mobile à deux modes de fonctionnement via une liaison wlan - Google Patents

Dispositif et procédé permettant de fournir un service pour un terminal mobile à deux modes de fonctionnement via une liaison wlan Download PDF

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Publication number
WO2009121663A1
WO2009121663A1 PCT/EP2009/052125 EP2009052125W WO2009121663A1 WO 2009121663 A1 WO2009121663 A1 WO 2009121663A1 EP 2009052125 W EP2009052125 W EP 2009052125W WO 2009121663 A1 WO2009121663 A1 WO 2009121663A1
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WO
WIPO (PCT)
Prior art keywords
mobile terminal
wlan
connection
service
parameters
Prior art date
Application number
PCT/EP2009/052125
Other languages
German (de)
English (en)
Inventor
Rainer Falk
Steffen Fries
Florian Kohlmayer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2009121663A1 publication Critical patent/WO2009121663A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the invention relates to a mobile terminal and a method for providing a service for this mobile terminal via a WLAN connection or via a mobile radio network.
  • Wireless Local Area Networks are wireless local
  • a base station or an access point (access point) serves as an interface between the radio network and a wired computer network.
  • the base station transmits small data packets, so-called "beacons" to all stations or mobile terminals in the reception area at adjustable regular time intervals.
  • the beacons contain a network name of the WLAN network (SSID: Service Set Identifier), a list of supported transmission rates and the type of data encryption. This facilitates the establishment of the connection since the mobile terminal or the client only has to know the network name and optionally some parameters for the encryption.
  • SSID Service Set Identifier
  • This facilitates the establishment of the connection since the mobile terminal or the client only has to know the network name and optionally some parameters for the encryption.
  • the use of the beacon data packets allows the monitoring of the quality of reception, even if no user data or payload are sent or received.
  • a structure of large WLANs with multiple base stations and uninterrupted change of clients or the mobile terminals between various base stations is provided in the standard. If the frequency ranges of the base stations or access points overlap, interference can occur. There is no real hand-over between the base stations, which means that in many cases a mobile terminal only looks for a new base station when the contact to the previous base station has already been aborted.
  • the services provided by a mobile terminal can be divided into services with and without real-time requirements. Services with real-time requirements are, for example, voice communication and video transmission. Services without Real-time requirements include e-mail, instant messaging, and browsers.
  • the configuration of devices with different WLAN profiles is known. These configuration settings or WLAN profiles include the network name, SSID, and security settings, such as the authentication method and encryption used. These configuration settings or WLAN profiles are stored as a list available to the mobile device. In conventional mobile devices currently receivable wireless networks or access points are searched. The first WLAN profile in the list that matches a found network is automatically activated. Conventional mobile devices thus take into account a hand-over of one
  • Mobile network towards a wireless connection does not improve the connection quality that the wi-fi access provides. This is disadvantageous, in particular, in the case of data services with real-time requirements, such as voice-over-IP-based voice communication, for example, since the respective WLAN access must meet sufficient quality criteria, such as a low data packet loss or a low delay, for a satisfactory voice quality to reach.
  • the invention provides a mobile terminal for providing a service, in particular a real-time service, which is provided in a first operating mode of the terminal via a mobile radio network and in a second operating mode of the terminal via a WLAN connection, wherein the mobile terminal of the first operating mode in the second Drive mode changes if a Wi-Fi connection is available that complies with a configurable selection feature.
  • a selection function is calculated for each available WLAN connection.
  • the selection function is calculated as a function of connection parameters.
  • connection parameters comprise parameters of the mobile terminal, parameters of the WLAN access point and parameters of the WLAN connection.
  • the parameters of the WLAN connection indicate a connection quality of a WLAN connection available between two terminals via the WLAN access point.
  • the parameters of the WLAN access point have a connection price for the WLAN connection via the WLAN access point, security parameters of the WLAN connection, connectivity parameters of the WLAN connection, type data for specifying a type of WLAN access point and position data of the wireless LAN access point.
  • the security parameters specify the encryption algorithm used in the WLAN connection.
  • the connectivity parameters indicate whether a NAT
  • Network Address Translation is provided in the WLAN access point, whether the traffic filtered through a firewall and if a VPN (Virtual Private Network) connection is allowed.
  • the type data of the WLAN access point indicates whether the WLAN access point is a public WLAN access point or a private WLAN access point.
  • the type data of the WLAN access point indicates whether a private WLAN access point is a private WLAN access point within a business or a private WLAN access point within a home.
  • the position data of the WLAN access point have coordinates of the installation location of the WLAN access point.
  • the parameters of the mobile terminal comprise a position of the mobile terminal, a speed of the mobile terminal, a direction of the mobile terminal, a type of the mobile terminal and a transmission power of the mobile terminal.
  • the position, the speed and the direction of the mobile terminal are determined by one in the mobile
  • Terminal integrated GPS receiver or detected by triangulation.
  • a change from the first operating mode to the second operating mode takes place only if a connection quality of the available WLAN connection is sufficient and if the available WLAN connection corresponds to a configured WLAN profile of the mobile terminal.
  • connection quality is calculated as a function of connection quality parameters that can be measured.
  • the measurable connection quality parameters comprise a data transmission rate, a latency, a jitter and a data packet loss rate.
  • connection quality parameters are measured by the mobile terminal or by a server belonging to the mobile terminal.
  • the mobile radio network is a GSM network.
  • the mobile terminal is a mobile telephone, a laptop or a PDA.
  • the service provided is a service without real-time requirements or a service with real-time requirements.
  • the service provided with real-time request comprises a voice communication service or a video data transmission service.
  • the voice communication service is a Voice over IP voice service.
  • the service provided without a real-time request is an e-mail service, an instant messaging service, a browser service or an FTP service.
  • service parameters of the service provided can be set as a function of the connection parameters of the WLAN connection used.
  • the adjustable service parameters of the service provided include a voice codec, a security parameter of the service, an error correction method and an address of a server.
  • an overlapping period is adjustable for a change between the two operating modes, during which both a connection via the mobile radio network and a connection via a WLAN connection exist.
  • the selection function for the available WLAN connections is calculated by a calculation unit of the mobile terminal or by a calculation unit of a server belonging to the mobile terminal.
  • the WLAN access points each emit a broadcast message which indicates that the respective WLAN access point is available.
  • a configurable WLAN profile has a network name of the WLAN connection and security parameters of the WLAN connection.
  • the broadcast message has a network name.
  • the network name is formed by an SSID of the WLAN connection.
  • the WLAN access point is connected via a data network to a server belonging to the mobile terminal.
  • the data network is the Internet.
  • the mobile radio network is connected via a telephone network to the server belonging to the mobile terminal.
  • the invention further provides a method for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network, wherein when switching from a mobile network to an available WLAN connection that WLAN connection is selected, which is a configurable selection function Fulfills.
  • the selection function for each available WLAN connection is calculated as a function of connection parameters.
  • connection parameters have a connection quality which is determined as a function of measured connection quality parameters.
  • a change from the mobile radio network to an available WLAN connection takes place only if the determined connection quality of the WLAN connection is sufficiently high and if the WLAN connection corresponds to a configured WLAN profile of the mobile terminal.
  • the invention further provides a computer program for carrying out a method for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network, wherein when changing from a mobile network to an available WLAN connection that WLAN connection is selected, which is a configurable selection function fulfilled.
  • the invention further provides a data carrier for storing such a program.
  • the computer program is executed in one possible embodiment by a data processing unit of the mobile terminal.
  • the computer program is executed by a data processing unit of a server associated with the mobile terminal.
  • the invention further provides a server for providing a service for a mobile terminal, wherein at a
  • the server selects that WLAN connection which fulfills a configurable selection function.
  • the server is connected via a data network to WLAN access points of the available WLAN connections.
  • the server is connected to the mobile network via a telephone network.
  • preferred embodiments of the mobile terminal according to the invention and of the method according to the invention for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network with reference to the attached figures for explaining features essential to the invention are described.
  • FIG. 1 is a diagram for explaining the operation of the method according to the invention for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network;
  • FIG. 2 shows a block diagram for explaining a possible embodiment of the method according to the invention for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network;
  • FIG. 3 shows a further diagram for explaining a possible embodiment of a system according to the invention for providing a service for a mobile terminal via a WLAN connection or via a mobile radio network;
  • FIG. 4 shows a flow chart for explaining a possible embodiment of the method according to the invention for providing a service for a mobile terminal via a WLAN connection or via a WLAN connection
  • FIG. 5 shows a diagram for the representation of different connection parameters, as used in the method according to the invention for calculating a selection function.
  • Fig. 1 shows schematically a system according to the invention for providing a service.
  • a mobile terminal 1 which may be, for example, a mobile phone, a laptop or a PDA, provides a user with services. These services are on the one hand
  • Services without real-time requirements and services with real-time requirements are voice communication services or video data transmission services.
  • voice communication service is a voice over IP
  • Voice service Deployed services without real-time requirements include, for example, an e-mail service, an instant messaging service, a browser service, or an FTP service.
  • the service provided is provided in a first operating mode of the terminal 1 via a mobile network 2, for example a GSM network, or in a second operating mode of the terminal 1 via a WLAN connection.
  • a mobile network for example a GSM network
  • WLAN connection There may be various WLAN connections or WLAN profiles A, B, C.
  • the mobile terminal 1 has, for example, a home WLAN connection (Home) A, a hot-spot WLAN profile B, and an office or office WLAN connection C.
  • a data network 3 for example the Internet or a local network of the company, you can connect to a company server.
  • the mobile terminal device 1 uses the available WLAN connection or the available WLAN profile which fulfills a configurable selection function AF when changing from the first operating mode to the second operating mode.
  • a calculation unit of the mobile terminal 1 calculates the selection function AF (P) for each available WLAN connection.
  • the selection function (AF) is calculated as a function of connection parameters P.
  • These connection parameters P have parameters of the mobile terminal 1, parameters of a WLAN Access point 2 and parameters of the wireless connection itself.
  • the mobile terminal 1 is within the range of various WLAN access points 2.
  • the mobile is located Terminal 1 within the range of N WLAN access points 2.
  • a predetermined selection function AF is calculated by a calculation unit of the mobile terminal 1 for each of the available WLAN connections 1 to N.
  • the calculation of the selection function AF (P) is performed by one to the mobile terminal
  • the WLAN access points 2 are connected via a data network 3 to the server 4.
  • the data network 3 may be a connected network.
  • the service provided is provided via a mobile radio network with a base station 5.
  • the mobile radio network is, for example, a cellular mobile radio network, in particular a GSM network.
  • the base station 5 is connected to the server 4 via a telephone network, for example a public telephone network 6, and a PSTN gateway 7.
  • the calculation of the selection function AF takes place as a function of various connection parameters, namely parameters of the mobile terminal 1, parameters of the WLAN access point
  • the parameters of the WLAN connection are, for example, a connection quality of a connection available between two terminals via the WLAN point 2.
  • the parameters of the WLAN access point 2 have, for example, a connection price for the WLAN connection via the WLAN access point 2, security parameters of the WLAN connection, connectivity parameters of the WLAN connection, type data for specifying a type of the WLAN access point 2 as well as position data of the WLAN access point 2.
  • the security parameters of the WLAN access point 2 indicate the encryption algorithm used in the WLAN connection.
  • the connectivity parameters of the WLAN connection indicate whether a NAT (Network Address Translation) is provided in the WLAN access point 2. Furthermore, the connectivity parameters can indicate whether traffic is filtered through a firewall. In one possible embodiment, the connectivity parameters indicate whether a Virtual Private Network (VPN) connection is allowed or not.
  • VPN Virtual Private Network
  • the type data of the WLAN access point 2 indicates whether the WLAN access point 2 is a public WLAN access point or a private WLAN access point.
  • the type data of the WLAN access point 2 may indicate whether a private WLAN access point is a private WLAN access point within a business or a private WLAN access point within a home office.
  • the position data of the WLAN access point 2 has the coordinates X, Y, Z of the installation location of the WLAN access point 2.
  • the parameters of the mobile terminal 1 in one possible embodiment include a speed of the mobile terminal 1, the direction of movement of the mobile terminal 1, the type of the mobile terminal 1 and the transmission power of the mobile terminal 1.
  • the positions of the mobile terminal 1 are determined in a possible embodiment by means of a GPS receiver contained in the mobile terminal 1. In an alternative embodiment, the position, the speed and the direction of movement of the mobile terminal 1 are determined by triangulation.
  • FIG. 5 shows an overview of the various connection parameters P, on the basis of which the selection function AF (P) can be calculated.
  • the connection parameters P include parameters of the mobile terminal 1, the WLAN access point 2 and the WLAN connection itself.
  • a change from the first operating mode, in which the service is provided via the mobile radio network, to the second operating mode, that is, into the operating mode in which the service is provided via a WLAN connection takes place. only if a connection quality of the available WLAN connection is sufficient and if the available WLAN connection corresponds to a configured WLAN profile of the mobile terminal 1.
  • the quality of the connection can be calculated as a function of connection quality parameters that can be measured.
  • the measurement of the connection quality parameters can be carried out by the mobile terminal 1 or by a server 4 belonging to the mobile terminal 1.
  • Measurable connection quality parameters P are, for example, a data transmission rate, a latency, a jitter and a data packet loss rate.
  • the selection function AF is calculated as a function of the connection parameters shown in FIG.
  • the selection function AF is calculated by a calculation unit within the mobile terminal 1 in a first embodiment.
  • the selection function AF is calculated by a calculation unit of a server 4 belonging to the mobile terminal 1.
  • the selection function AF is configurable in a preferred embodiment. This configuration may be in, for example, Depend on the service to be provided.
  • the mobile terminal 1 is a dual terminal, for example a dual mode phone (DMP).
  • DMP dual mode phone
  • This mobile telephone 1 enables voice telephony on the one hand via a GSM mobile radio network 5 and on the other hand via a WLAN network.
  • the WLAN access point 2 is connected to an HPMC Appliance Server 4 via the Internet 3.
  • the HPMC Appliance Server 4 is located in a corporate network of a company and supports one on the network side
  • a HiPath 8K 8 can be provided within the company network.
  • the mobile terminal 1 has two options for establishing a voice connection, namely either via the public mobile network or via a WLAN connection. If there is a WLAN connection, the mobile terminal 1 notifies the HPMC client server 4 via a SIP signaling message. In this way, the HPMC client server 4 is informed that the dual-mode terminal 1 is now reachable via a WLAN connection.
  • the mobile terminal 1 After a start step SO, the mobile terminal 1 checks in step S1 whether a WLAN connection is available.
  • the WLAN access points 2 each broadcast a broadcast message indicating that the respective WLAN access point 2 is available. Based on these broadcast messages, the mobile terminal 1 can determine whether a WLAN connection is available or not.
  • the broadcast messages have a network name of the wireless LAN connection. This network name can For example, be formed by an SSID of the wireless connection.
  • a further step S2 it is checked whether the available WLAN connection corresponds to a WLAN profile of the mobile terminal 1.
  • These WLAN profiles are configured in the mobile terminal 1, for example.
  • the mobile terminal 1 contains three different WLAN profiles, namely a home profile A, a hot spot profile B and an office profile C. If the available WLAN connection corresponds to one of the configured WLAN profiles WLAN profiles, in step S3, the calculation of the predetermined selection function AF for the available WLAN connections. For example, two WLAN connections are available that correspond to configured WLAN profiles, such as a Home Profile A and a Hot Spot Profile B.
  • step S4 that WLAN connection is selected which best fulfills the selection function AF (P), that is to say z. B. has a highest function value of the selection function.
  • step S5 a change takes place to the selected WLAN connection in step S5.
  • step S6 ends in step S6.
  • the service parameters of the service provided can be set as a function of the connection parameters P of the WLAN connection used.
  • These adjustable service parameters of the service provided include, for example, a voice codec, a security parameter of the service, an applied error correction method and an address of a server.
  • the functionality of WLAN profiles is supplemented by special functions for supporting HiPath Mobile Connect extended.
  • the decision is made as to whether a currently available WLAN connection is used for a specific service, for example for a voice-over-IP voice communication service. This will allow HPMC's behavior to enable the currently enabled Wi-Fi network.
  • geographical data and movement data may be provided by the mobile terminal 1.
  • these data are obtained by a GPS receiver integrated in the mobile terminal 1 or determined by triangulation. This geographic data can be used to define location-dependent preferences and, on the other hand, this data can be used to determine the speed of the mobile terminal 1. The location and speed of the mobile terminal 1 may be included in deciding whether to handover from the mobile network to the WLAN connection or vice versa.
  • the WLAN profile is extended by further data, which are evaluated by the HPMC server 4 server. This is done, for example, by extending the WLAN profiles managed by an operating system or by managing the HPMC server 4's own data, the associated with an operating system WLAN profile. In this case, the HPMC server 4 asks the operating system which WLAN profile is currently activated and uses its own data associated with this WLAN profile. It depends on this data whether a WLAN profile, for example for Voice over IP voice communication, is used over the WLAN interface.
  • the connecting means are detected in a possible embodiment to a voice gateway.
  • This voice gateway is formed, for example, by a voice over IP server, a SIP server or an HPMC appliance server 4.
  • the connection means can be assigned to the currently active WLAN profile.
  • the connection price can also be used as the basis for the decision.
  • security settings of the respective WLAN profile for example whether the WLAN communication is protected by WPA, WEP or not at all (piain), can be taken into account.
  • the decision can be assigned to the WLAN profile on the basis of connectivity parameters, such as whether a network address translation NAT is provided or whether the network traffic is filtered.
  • an available WLAN profile is used by the HPMC appliance server 4 for voice communication if certain minimum quality criteria are met. A hand-over from the mobile network too
  • WLAN-based Voice over IP is dependent on the parameters of the active WLAN profile characterizing the connection good.
  • voice over IP connection parameters for example voice codec and IP address of the voice over IP gateway, are selected on the basis of the stored connection data.
  • the adaptation of the handover from the mobile network to WLAN-based Voice over IP may determine the duration of the overlap period in which both connections, that is mobile network connection and wireless connection, are operated in parallel affect.
  • the actual actual connection quality to the voice gateway may be measured prior to use for the voice communication. This is particularly useful if the quality of the connection varies greatly.
  • a voice codec and an error correction method for voice communication can be selected.
  • the geographic location is additionally assigned to the acquired data of the respective WLAN profile in order to be able to differentiate different access points 2 with the same network name (SSID), which may well have different quality parameters.
  • SSID network name
  • the location information is not determined by geographical coordinates, but by the amount, the name and the signal strength of the currently receivable access points 2. Based on this data, the mobile terminal 1 can recognize whether it is again in the same place we the one where the stored data was collected. This represents a possibility to distinguish different access points 2 with the same network name or with the same SSID without GPS receivers.
  • the mobile terminal 1 transmits, as part of the signaling, whether there is a WLAN connection or a WLAN connectivity, identification information of the currently active WLAN connection, that is, z. A profile number, a WLAN profile name, an SSID, a MAC address of the access point 2, geographical information data and speed.
  • the HPMC server 4 receives information as to which WLAN access is currently being used and can thereby capture and store corresponding connection measurement data and use it to decide whether to use a voice connection for the public mobile network or Voice over IP over a WLAN connection should be used.
  • the inventive method ensures that even when using WLAN connections of different quality always a reliable, high quality voice service can be provided.

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

Abstract

L'invention concerne un appareil mobile permettant de fournir un service en temps réel, qui est fourni via un réseau de téléphonie mobile dans un premier mode de fonctionnement de l'appareil terminal et via une liaison WLAN dans un second mode de fonctionnement du terminal. Le terminal mobile passe du premier mode de fonctionnement au second mode de fonctionnement seulement lorsqu'une liaison WLAN établie par le terminal mobile satisfait à une fonction de sélection (FS) configurable.
PCT/EP2009/052125 2008-04-03 2009-02-23 Dispositif et procédé permettant de fournir un service pour un terminal mobile à deux modes de fonctionnement via une liaison wlan WO2009121663A1 (fr)

Applications Claiming Priority (2)

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DE102008017136.0 2008-04-03
DE200810017136 DE102008017136B4 (de) 2008-04-03 2008-04-03 Vorrichtung zum Bereitstellen eines Dienstes für ein mobiles Endgerät über eine WLAN-Verbindung

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WO2009121663A1 true WO2009121663A1 (fr) 2009-10-08

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WO (1) WO2009121663A1 (fr)

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WO2014177088A2 (fr) * 2013-12-27 2014-11-06 中兴通讯股份有限公司 Procédé de commande de mode de comportement de terminal, dispositif et système associés

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WO2014117497A1 (fr) * 2013-01-29 2014-08-07 中兴通讯股份有限公司 Procédé et dispositif de traitement de réseau
WO2014177088A2 (fr) * 2013-12-27 2014-11-06 中兴通讯股份有限公司 Procédé de commande de mode de comportement de terminal, dispositif et système associés
WO2014177088A3 (fr) * 2013-12-27 2014-12-24 中兴通讯股份有限公司 Procédé de commande de mode de comportement de terminal, dispositif et système associés

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DE102008017136B4 (de) 2013-01-31

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