EP1574099A2 - Verfahren zur herstellung einer verbindung zwischen einer mobilstation und einem kommunikationsnetzwerk - Google Patents
Verfahren zur herstellung einer verbindung zwischen einer mobilstation und einem kommunikationsnetzwerkInfo
- Publication number
- EP1574099A2 EP1574099A2 EP03753306A EP03753306A EP1574099A2 EP 1574099 A2 EP1574099 A2 EP 1574099A2 EP 03753306 A EP03753306 A EP 03753306A EP 03753306 A EP03753306 A EP 03753306A EP 1574099 A2 EP1574099 A2 EP 1574099A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- access point
- mobile station
- standard
- detection
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Definitions
- the invention relates to a method for establishing a connection between a mobile station and a communication network, in which a connection is established between the mobile station and the network after selection of the connection parameters via an access point.
- a mobile station can be, for example, a cordless telephone, a cell phone or a computer. These mobile stations establish a connection to the respective communication network via a so-called access point.
- the cordless telephone it is the base station through which a connection to the telephone network is established.
- a connection to the mobile radio network is established via a base station of a current radio cell, while a computer is connected to the boarding school, for example, via a provider's access point.
- a first method supports the detection of the currently used data rate for modems. After selecting another
- Network subscriber via a telephone network and a call acceptance by the selected modem the two devices agree important Transmission parameters with each other such as the transmission speed, error correction, data compression and the protocol used. After tuning the parameters, the actual data transfer begins.
- Another method for establishing a connection is known from the calculation of the wireless telephones.
- a mobile device checks all possible transmission channels within the standard and then selects the channel with the best reception result for establishing a connection. This procedure reduces the susceptibility to interference of the transmission and at the same time increases the voice quality.
- This standard supports single and multi-cell systems with a smooth transition between the cells.
- devices which can work across standards with both the GSM standard and the DECT standard.
- a method from the WLAN area is known from US Pat. No. 5,991,287, in which a search for further access points is carried out during an existing connection with a current access point.
- the known methods primarily enable the establishment of a connection between the mobile station and the communication network within a standard or in a unique selection between related standards. Both the The type of transmission as well as the access method and the type of modulation are the same for GSM and DECT. This selects a connection that cannot be the connection with the best possible data transfer rate based on the current location of the MobilStation. With WLAN / GPRS, for example, it must also be determined before starting the system in which standard a connection should be established. If the current connection is interrupted, a possible access point must first be searched for and then the connection established, which takes a certain amount of time.
- the object of the invention is to provide a method with which an automatic detection of currently usable connection possibilities to different communication networks in different standards, a storage and evaluation of the found parameters for the standards and the establishment as well as the maintenance of a connection with one of the found connection possibilities are realized becomes.
- the object is achieved in a method of the type mentioned at the outset in that an automatic recognition of usable connection options to different networks in different standards and frequency bands is carried out by checking the connection options within this standard after selecting a first standard that Subsequently, a second standard is selected by also checking the connection options, and storing parameters which characterize the standard with which a connection option was found, such that the establishment of a connection to an access point at which communication takes place via a standard takes place after Selection criteria are programmatically or manually selected. After switching on or rebooting a mobile station, it searches for existing connection options. For this purpose, all connection standards known to the mobile station and which can be updated at any time are set in succession.
- connection options within this standard are checked, for example by successively checking all channels for a first carrier frequency of the DECT standard before setting a second carrier frequency of the DECT standard and again checking all associated channels.
- the test can be carried out actively, by sending out a signal and evaluating the response received, or passively, by evaluating only the reception.
- the modules required for establishing a connection according to a specific standard are program-controlled or set to the second standard to be checked by rebooting and the search is continued within this standard.
- Possible standards include IEEE 802.11 a / b / g, HiperLAN / 2, Bluetooth and GPRS.
- parameters such as the standard designation, frequency band, carrier frequency, channel, result of the connection test and others are saved.
- Data storage can also be limited to the parameters of the options with which a connection was found.
- the stored data can then be subjected to an evaluation. Criteria of the evaluation can be, for example, the connection speed, the data throughput, the signal strength or the costs for the connection.
- a connection to an access node is then established, either program-controlled by means of preset parameters or after the user has made a selection from a list of the available connection options.
- connection is established with the connection option that reaches a maximum in terms of data throughput.
- the data stored in the search for connection options offer the possibility of carrying out an evaluation, for example with regard to the transmission speed of the standard found.
- the evaluation can also take into account the data rate that can actually be achieved or which user data can still be transmitted in a WLAN packet after deduction of the preamble, header and CRC data.
- a further possibility is the evaluation of the signal strength, since this has a conclusion about the probability of a faulty data transmission and the need to retransmit the faultily transmitted packet on the expected effective data rate.
- the detection and the data storage take place before logging on to an access point.
- the recognition process is carried out since it forms the basis for establishing a connection with an access point. If no connection option has been identified as a result of this first identification process, a second and possibly further necessary identification processes are started directly after the first or after a specified time has elapsed.
- Another advantageous embodiment of the invention provides for the detection and data storage to take place during an existing connection to an access point.
- the current access point is informed before the recognition is carried out that the mobile station cannot receive any data for an agreed time and that incoming data is buffered in the access point.
- a mobile station equipped with only one transmitting, receiving and associated data processing module cannot send or receive data to or from the access point in an ongoing recognition process. For this reason, the mobile station sends a message to the current access point about the intention and the duration of the connection interruption, as is customary in the WLAN standard, for example. This ensures that any data arriving at the time of the recognition process is stored by the access point and transmitted to the mobile station after the connection is re-established.
- the mobile station logs off from the current access point before the recognition is carried out
- This variant also ensures that there is no data loss during transmission between the mobile station and the access point.
- the MobilStation After logging off from the current access point, the MobilStation carries out the recognition process and updates the stored data. Subsequently, the program is controlled again or a connection to an access point is established by manual selection.
- the detection process is carried out in the power management cycle.
- the advantage of using the power management cycle is, on the one hand, that no data is transmitted within this time and, on the other hand, the mobile station is not busy with the execution of other processes that may not be interrupted.
- the detection and data storage or updating take place periodically.
- the first recognition process which takes place after the mobile station is switched on or booted, stores data relating to the individual tested and / or found connection options in a memory of the mobile station.
- a subsequent recognition process overwrites or updates the stored data.
- a periodic detection of the connection options in connection with the storage of the data makes it possible, in the event of a deterioration in the transmission quality or a connection failure to the current access point, without the effort of a new one Switch detection process to another access point inside or outside of the last used standard. This minimizes the connection-free time.
- Active detection means sending a signal to possible access points and waiting for a response. With passive detection, however, only the received signal is evaluated.
- the recognition process is carried out during a data transmission pause during an active connection to the access point.
- the mobile station is connected to the Internet, for example, via an access point.
- more data is loaded from the network onto the mobile station than vice versa.
- it is set up and the user is occupied with reviewing it for some time until a further request for data transmission is pending. This pause in the data transmission is used by the method according to the invention to carry out a recognition process.
- the mobile station accesses the stored data of the connection options found and can thus set up a connection to another access point in the shortest possible time, even if it works in a standard that is alien to the last current standard.
- the connection can also be program-controlled according to default parameters or after a manual selection. If there is no more stored data or it is no longer up to date, there is also the possibility to start a recognition process at this point and then to establish a new connection.
- the switching to different standards and frequency bands is program-controlled or is carried out by rebooting a processor.
- the mobile station can be set to a desired standard when the device is booting.
- a desired standard when the device is booting.
- there is a corresponding protocol for each standard to be checked which can be expanded, deleted, adapted or supplemented by a change in the state of the art.
- Another variant of switching to a standard is control by a program sequence.
- connection parameters with the current access point and other connection options are carried out and that a switch is made automatically or manually to another connection option.
- the mobile station periodically performs recognition processes. This means that, even when the mobile station changes location or in the event of malfunctions, current data of recognized connection options are available. These are evaluated with specified parameters and compared with the connection to the current access point. If, for example, the mobile station determines that an access point with a higher data transmission rate or better quality can now be reached, the mobile station changes automatically during operation or after a query to another access point.
- a mobile station is embodied by a portable computer that is located in a WLAN network environment.
- the mobile station is switched on and is set to the IEEE 802.11 a standard after the boot process has ended. After setting this first standard, the mobile station begins to automatically detect usable connection options within the set standard. All parameters characterizing the standard are stored by the mobile station. If this amount of data is not desired, the storage of the parameters can be reduced to that of the “usable connection options”.
- the second standard for example EEE 802.11 b, is set below and a second search for connection options within this standard with the associated storage of the data
- This process of classifying a standard and searching for associated connection options continues until all standards known to the mobile station have been checked, after which the mobile station evaluates the data of the identified connection options according to the default parameter data transmission rate and automatically establishes a connection with the access point that provides the largest data transfer rate allows. If the setting of the automatic connection establishment has been deactivated by the user of the mobile station, the user is shown a selection list of the connection options arranged according to data transmission rates. After the user has selected a connection option, the mobile station logs on to the access point that supports the selected connection option. After registration, communication with the network takes place in the manner known from the prior art.
- a change in the position of the mobile station relative to the current access point can lead to a deterioration in the transmission quality. Then it becomes necessary to terminate the connection to the current access point and to resume it with another newly selected one.
- a periodic recognition process is carried out not only before the establishment of a connection but also during the duration of an existing connection.
- One possibility for periodically carrying out a recognition process is that the mobile station informs the access point that it is not possible to receive data for an agreed time and that the access point realizes any incoming data packets.
- the mobile station carries out a new one within this agreed time window automatic detection of usable connection options and saves the data obtained. It is also possible to overwrite the entire data set or to update only selected data.
- a second option for performing a new search is to log off the mobile station at the current access point, to carry out the recognition process and to re-register the mobile station at the same or at a different access point.
- the decision about the access point to be used is made after the evaluation of the connection options found on the basis of default parameters or by a manual selection.
- a recognition process can advantageously also be carried out in the power management cycle since no data has to be transmitted within this cycle. Using these options, periodic detection and associated updating of the data can be ensured via connection options.
- the current database enables the mobile station to make a periodic comparison between the parameters of the connection to the current access point and the connection options found. If the result of this comparison determines that a connection with improved parameters is possible via another access point, the mobile station changes to the other access point automatically or after confirmation by the user. You can also switch to another standard. For example, the mobile station logs into a GPRS network after the WLAN fails. This procedure ensures optimal connection quality for the user.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
- Communication Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10261201 | 2002-12-20 | ||
DE10261201A DE10261201A1 (de) | 2002-12-20 | 2002-12-20 | Verfahren zur Herstellung einer Verbindung zwischen einer Mobilstation und einem Kommunikationsnetzwerk |
PCT/DE2003/003058 WO2004062308A2 (de) | 2002-12-20 | 2003-09-15 | Verfahren zur herstellung einer verbindung zwischen einer mobilstation und einem kommunikationsnetzwerk |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1574099A2 true EP1574099A2 (de) | 2005-09-14 |
Family
ID=32519406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03753306A Ceased EP1574099A2 (de) | 2002-12-20 | 2003-09-15 | Verfahren zur herstellung einer verbindung zwischen einer mobilstation und einem kommunikationsnetzwerk |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060251040A1 (de) |
EP (1) | EP1574099A2 (de) |
JP (1) | JP2006512010A (de) |
AU (1) | AU2003271535A1 (de) |
DE (1) | DE10261201A1 (de) |
WO (1) | WO2004062308A2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004015861B4 (de) * | 2004-03-31 | 2006-02-09 | Advanced Micro Devices, Inc., Sunnyvale | Rahmengestützte MAC-Steuerung in WLAN-Kommunikationseinrichtungen |
US7941177B2 (en) * | 2004-09-15 | 2011-05-10 | Samsung Electronics Co., Ltd | Wireless terminal apparatus for automatically changing WLAN standard and method thereof |
US7366107B2 (en) * | 2004-10-29 | 2008-04-29 | Sony Ericsson Mobile Communications Ab | Portable electronic devices including attaching circuits and methods of operating the same |
DE102004057387A1 (de) * | 2004-11-26 | 2006-06-01 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zum Durchführen von Handover- und Roaming-Prozeduren in Funknetzen |
US7797018B2 (en) * | 2005-04-01 | 2010-09-14 | Interdigital Technology Corporation | Method and apparatus for selecting a multi-band access point to associate with a multi-band mobile station |
DE102009008090A1 (de) * | 2009-02-09 | 2010-08-12 | Vodafone Holding Gmbh | Verfahren zur Herstellung einer Kommunikationsverbindung von einem elektronischen Endgerät zu einem Heimat-Kommunikationsnetz |
DE102009054211B4 (de) * | 2009-11-21 | 2020-08-06 | Volkswagen Ag | Verfahren zur automatischen Erstellung einer Kommunikationsverbindung für ein Fahrzeug sowie entsprechend ausgestaltete(s) Kommunikationsverbindung, System und Fahrzeug |
JP2011175394A (ja) * | 2010-02-24 | 2011-09-08 | Fujifilm Corp | シングル・サインオン・システムを構成するウェブ・サーバならびにその動作制御方法およびその動作制御プログラム |
WO2016166982A1 (ja) * | 2015-04-16 | 2016-10-20 | 日本電気株式会社 | 通信装置、通信方法、及び、記録媒体 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2285555B (en) * | 1993-12-22 | 1998-07-29 | Nokia Mobile Phones Ltd | Multi-mode radio telephone |
FI106671B (fi) * | 1995-03-13 | 2001-03-15 | Nokia Mobile Phones Ltd | Matkaviestinkokonaisuus, matkaviestinpäätelaite ja menetelmä yhteyden muodostamiseksi matkaviestinpäätelaitteelta |
CA2232693C (en) * | 1995-10-17 | 2005-02-08 | Telefonaktiebolaget Lm Ericsson | A method for performing handover and roaming in a radio communication environment |
US6009319A (en) * | 1996-09-06 | 1999-12-28 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for reducing power consumption in a mobile radio communication device |
US5991287A (en) * | 1996-12-30 | 1999-11-23 | Lucent Technologies, Inc. | System and method for providing seamless handover in a wireless computer network |
US6028851A (en) * | 1997-09-26 | 2000-02-22 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for mobile assisted admission control |
FI112583B (fi) * | 1999-05-26 | 2003-12-15 | Nokia Corp | Menetelmä solukkoradiojärjestelmien välisten kanavanvaihtomittausten toteuttamiseksi ja päätelaite |
DE19928257A1 (de) * | 1999-06-21 | 2000-12-28 | Siemens Ag | Verfahren und Einrichtung für eine flexible Vergabe von Übertragungskanälen |
US6845238B1 (en) * | 1999-09-15 | 2005-01-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Inter-frequency measurement and handover for wireless communications |
US7039027B2 (en) * | 2000-12-28 | 2006-05-02 | Symbol Technologies, Inc. | Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products |
ATE350868T1 (de) * | 2001-05-10 | 2007-01-15 | Nortel Networks Ltd | System und verfahren zur umleitung von kommunikation zwischen mobiltelekommunikationsnetzen mit unterschiedlichen funkzugangstechnologien |
US7096022B2 (en) * | 2002-10-08 | 2006-08-22 | Ntt Docomo, Inc. | System and method for supporting quality of service in vertical handovers between heterogeneous networks |
KR20070046975A (ko) * | 2002-10-18 | 2007-05-03 | 키네토 와이어리즈 인코포레이션 | 비인가 무선 통신 시스템을 이용한 인가 무선 통신시스템의 커버리지 영역 확장 장치 및 방법 |
-
2002
- 2002-12-20 DE DE10261201A patent/DE10261201A1/de not_active Ceased
-
2003
- 2003-09-15 AU AU2003271535A patent/AU2003271535A1/en not_active Abandoned
- 2003-09-15 US US10/538,312 patent/US20060251040A1/en not_active Abandoned
- 2003-09-15 WO PCT/DE2003/003058 patent/WO2004062308A2/de active Application Filing
- 2003-09-15 JP JP2004564139A patent/JP2006512010A/ja active Pending
- 2003-09-15 EP EP03753306A patent/EP1574099A2/de not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2004062308A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004062308A3 (de) | 2004-11-18 |
WO2004062308A2 (de) | 2004-07-22 |
AU2003271535A8 (en) | 2004-07-29 |
AU2003271535A1 (en) | 2004-07-29 |
JP2006512010A (ja) | 2006-04-06 |
US20060251040A1 (en) | 2006-11-09 |
DE10261201A1 (de) | 2004-07-15 |
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