WO2004079996A1 - Verfahren zur übertragung von informationen in einem netzwerk mit einem lokalen funkkommunikationssystem und einem zellularen funkkommunikationssystem und basisstation - Google Patents
Verfahren zur übertragung von informationen in einem netzwerk mit einem lokalen funkkommunikationssystem und einem zellularen funkkommunikationssystem und basisstation Download PDFInfo
- Publication number
- WO2004079996A1 WO2004079996A1 PCT/EP2004/001876 EP2004001876W WO2004079996A1 WO 2004079996 A1 WO2004079996 A1 WO 2004079996A1 EP 2004001876 W EP2004001876 W EP 2004001876W WO 2004079996 A1 WO2004079996 A1 WO 2004079996A1
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- WO
- WIPO (PCT)
- Prior art keywords
- radio
- station
- communication system
- radio station
- radio communication
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/16—WPBX [Wireless Private Branch Exchange]
Definitions
- the invention relates to a method for transmitting information in a network comprising at least one local radio communication system and at least one cellular, hierarchical radio communication system with at least one base station according to the preamble of claim 1.
- the invention further relates to a base station in a network for transmitting information comprising at least one local radio communication system and at least one cellular, hierarchical radio communication system with at least the base station according to the preamble of claim 11 and an associated network.
- information for example voice, image information, video information, SMS (Short Message Service), MMS (multimedia messaging
- the electromagnetic waves are emitted at carrier frequencies that lie in the frequency band provided for the respective system.
- Frequencies at 900, 1800 and 1900 MHz are used for the introduced GSM mobile radio system (Global System for Mobile Communication). These systems essentially communicate Voice, fax and short messages SMS (Short Message Service) and also digital data.
- GSM Global System for Mobile Communication
- UMTS Universal Mobile Telecommunication System
- third generation systems frequencies in the frequency band of approximately 2000 MHz are provided. These third generation systems are developed with the objectives of a wide range
- Radio interface which is the interface with the least resources in radio communication systems.
- radio communication systems it should above all be possible through the flexible administration of the radio interface that a subscriber station can send and / or receive a large amount of data at high data speed if required.
- the access of stations to the common radio resources of the transmission medium is with these stations.
- Radio communication systems regulated by multiple access (MA) methods are provided.
- each transmit and receive frequency band is divided into time slots, with one or more cyclically repeated time slots being allocated to the stations.
- the radio resource time is separated station-specifically by TDMA.
- FDMA frequency domain multiple access methods
- FDMA frequency domain multiple access methods
- the radio resource frequency is separated on a station-specific basis.
- CDMA code area multiple access methods
- the power / information to be transmitted is coded in a station-specific manner by means of a spreading code which consists of many individual so-called chips, as a result of which the power to be transmitted is randomly spread over a large frequency range due to the code.
- the spreading codes used by different stations within a cell / base station are mutually orthogonal or essentially orthogonal, as a result of which a receiver recognizes the signal power intended for it and suppresses other signals.
- CDMA uses radio codes to separate the radio resource power by station-specific.
- orthogonal frequency division multiple access methods OFDM
- the data are transmitted in broadband, with the
- Frequency band is divided into equidistant, orthogonal subcarriers, so that the simultaneous phase shift of the subcarriers spans a two-dimensional data flow in the time-frequency range.
- OFDM separates the radio resource frequency using station-specific orthogonal subcarriers.
- the summarized data symbols transmitted on the orthogonal subcarriers during a time unit are referred to as OFDM symbols.
- the multiple access methods can be combined.
- Many radio communication systems use a combination of the TDMA and FDMA methods, whereby each narrowband frequency band is divided into time slots.
- the TDD mode is characterized in particular by the fact that a common frequency band for both signal transmission in the upward direction (UL - uplink) and in the downward direction (DL -
- Downlink is used while the FDD mode for the two Transmission directions each uses a different frequency band.
- information can be channel-switched (CS circuit switched) or packet-switched (PS packet switched).
- Base station and radio network control device are usually components of a base station subsystem (RNS radio network subsystem).
- RNS radio network subsystem A cellular radio communication system usually comprises several base station subsystems that are connected to a core network (CN Core Network).
- the radio network control device (RNC Radio Network Controller) of the base station subsystem is usually connected to an access device (SGSN Serving GPRS Support Node, with GPRS General Packet Radio Service) of the core network for packet-switched data transmissions.
- This access facility for the core network fulfills a similar task to the nodes MSC (Mobile Services Switching Center) and VLR (Visitor Location Register) for the channel-switching part of the core network.
- a gateway GGSN gateway GPRS support node
- to other packet data networks such as the Internet is usually connected to the access device of the core network.
- WLANs Wireless Local Area Networks
- WLANs transmit data in a first version at a frequency around 2.4 GHz, in another Version in a frequency range around 5-6 GHz, where there are quasi-optical propagation characteristics.
- the at least one local radio communication system and the at least one cellular, hierarchical radio communication system use different radio access technologies (RAT radio access technology).
- RAT radio access technology can mean that, for example, different subscriber separation methods or combinations of
- the at least one local radio communication system and the at least one cellular, hierarchical radio communication system will belong to differently standardized radio access technologies.
- a wireless local communication network can be set up, whereby the subscriber stations (MNs Mobile Nodes) can communicate with one another by radio over one or more hops (hop, multihop) or via WLAN radio access devices (APs access points).
- Radio access devices (APs access points) e.g. a connection to broadband data networks (BDN Broadband Data
- Each radio access device usually supplies all subscriber stations located in its radio coverage area.
- the cell size is usually limited to a few hundred meters.
- a cellular radio network can be created with WLAN, in which, with a corresponding movement of the subscriber station, an existing data connection from Radio access device can be transferred to radio access device (roaming).
- the maximum data rates depend on the respective WLAN technology and can be up to 54 Mbit / s.
- WLANs to the generally broad-ranging cellular radio communication systems, for example of the second and / or third generation, is currently being discussed, for example in 3GPP standardization bodies (3GPP Third Generation Partnership Project). Due to the technical possibilities of WLANs, in particular the high data rates, there is great interest in using this technology as a supplement to supralocal radio communication systems - for example as a supplement to UMTS - in the so-called * hot spots ", ie in particular in locally restricted areas with a large number of subscribers such as airports, hotels or the like.
- WLAN technologies can be used which enable broadband radio access to the broadband data networks and which are based, for example, on TCP / IP (TCP Transmission Control Protocol / IP Internet Protocol), ATM ( Asynchronous Transfer Mode) or B-ISDN (Broadband Integrated Services Digital Network)
- TCP / IP Transmission Control Protocol / IP Internet Protocol
- ATM Asynchronous Transfer Mode
- B-ISDN Broadband Integrated Services Digital Network
- broadband WLAN technologies are IEEE 802.11 technologies (IEEE Institute of Electrical and Electronics Engineers) such as IEEE 802.11a, - ' IEEE
- V WLAN is used to represent the various broadband WLAN technologies.
- WLANs For the connection of WLANs to a supra-regional or supra-regional hierarchical radio network such as UMTS, there is a very attractive possibility of connecting WLAN and UMTS by connecting the radio access devices of the WLAN to UMTS and / or using so-called dual mode subscriber stations who are able to to communicate both with the at least one local radio communication system - for example WLAN - and with the at least one cellular, hierarchical radio communication system - for example UMTS.
- the hardware-related WLAN connection can be implemented by a corresponding module in such a way that the module e.g. is either already integrated as a WLAN radio part or as a WLAN PC card in the connections of a corresponding one
- Interface of the subscriber station or the terminal for example a PCMCIA interface, is inserted.
- This provides a method and an associated network comprising at least one local radio communication system and at least one cellular, hierarchical radio communication system with at least one base station, the at least one local radio communication system and the at least one cellular, hierarchical radio communication system using different radio access technologies and information about an air interface of the local radio communication system is transmitted from a first radio station with means for communication at least with the local radio communication system to a second radio station " with means for communication at least with the local radio communication system.
- a suitable subscriber station which is fundamentally capable, both with a cellular, hierarchical radio communication system and with one To communicate local radio communication system and which is currently in a radio cell of the cellular, hierarchical radio communication system, can also be integrated in an information transmission using the at least one local radio communication system, suitable measures are to be taken to make this possible or easier.
- the invention is therefore based on the object of demonstrating a method and a base station, and also a network of the type mentioned at the outset, which enable or provide such measures in a simple manner, without a strong connection or coupling between the local radio communication system or systems (s) and the cellular, hierarchical radio communication system may be required.
- the existing infrastructure should, if possible - be used to the extent possible and / or sensible.
- the first radio station and / or the second radio station provides measurement and / or status information for measurements of the specific ones
- Conditions of the radio station and / or states of the radio station are transmitted to the at least one base station and signaling information relating to radio transmission between the first radio station and the second radio station is transmitted from the at least one base station to the first radio station and / or to the second radio station.
- the radio cell that is assigned to the at least one base station can be divided into sectors.
- the radio stations or subscriber stations can - but need not - be mobile.
- a radio station can also be a relay station of the local radio communication system.
- the range of a local radio communication network can be increased by relay stations.
- Subscriber stations, but also generally stationary stations of a network operator or a service provider, can serve as relay stations.
- a radio station also provides
- Radio access devices of the local radio communication system are Radio access devices of the local radio communication system.
- the measurement and / or status information of the radio station can include information regarding the neighboring stations, the traffic load in the area of the radio station, the power supply of the radio station and / or the transmission modes supported by the radio station. All circumstances, properties or states that may be relevant for a network control can be recorded and taken into account by the at least one base station.
- the measurements of the specific conditions of the radio station and / or the state determination of the radio station can be carried out periodically and / or
- the periodic implementation enables a reduced signaling communication towards the execution upon request.
- the request can come from different points in the network, for example from the base station.
- the signaling information relating to the radio transmission between the first radio station and the second radio station can include data on the transmission power, the radio frequency, the transmission mode and / or the like.
- the at least one base station exercises an active control and
- the signaling information can therefore basically contain all the data that are important for this.
- the signaling information relating to the radio transmission between the first radio station and the second radio station is requested by the at least one base station, by a radio access device of the local radio communication system and / or by the first
- Radio station and / or transmitted by the second radio station are referred to.
- Communication with at least the local radio communication system can be transmitted to the second radio station, path information can advantageously be related.
- a transmission path between the first radio station and the second radio station are transmitted from the at least one base station to the first radio station. This facilitates routing in the local radio communication system.
- a path from the transmitter may have to pass the data packet over a number of data packets
- Radio stations to the receiver can be found.
- the selection of the route is called routing. Is it the Radio stations around mobile radio stations, so the topology of the network usually changes over time. A suitable routing procedure must take these constant changes into account.
- the transmission of the path information relating to the transmission path can include a transmission via the cellular, hierarchical radio communication system. This means that routing information is at least also transmitted via a radio interface of the cellular, hierarchical radio communication system. This can relate to the implementation of the transmission of the path information itself, i.e. the information transmission, as well as the transmission path of the useful information via the path (route).
- the at least one base station can send the signaling data as a broadcast, on a shared radio channel or on a dedicated radio channel.
- the transmission of the signaling information to the first radio station and / or to the second radio station includes transmission via a radio access device of the local radio communication system.
- the infrastructure of the local radio communication system is thus used profitably.
- the at least one base station maintains a neighborhood table over at least a partial area of the local radio communication system with data on neighboring stations with means for communication at least with the local radio communication system.
- the at least one base station can then quickly provide the desired path information if required.
- the invention also relates to a base station in a network for transmitting information comprising at least one local radio communication system using a first radio access technology and at least one cellular, hierarchical radio communication system using at least the base station, wherein information about an air interface of the local radio communication system is provided by one the first radio station, which is equipped with means for communication at least with the local radio communication system, to a second radio station, which also has means for communication with at least the local radio communication system.
- This base station is characterized by the fact that means are available from the first radio station and / or from the second
- Radio station to receive measurement and / or status information relating to measurements of the specific conditions of the radio station and / or states of the radio station to at least one base station and signaling information relating to radio transmission between the first radio station and the second radio station from at least one base station to the first radio station and / or to transmit to the second radio station.
- 'Base Station means may be at least provided at least over a partial area of the local radio communication system with data on adjacent stations with means for communication with the local radio communication system to at least temporarily Provision of a neighborhood table.
- the means for requesting measurements of the specific conditions of the radio station and / or determining the state of the radio station and / or requesting signaling information relating to radio transmission between the first radio station and the second radio station may be present in the base station.
- the network according to the invention for the transmission of data with at least two radio communication systems is characterized in that it comprises at least one base station according to the invention, the at least one local radio communication system and the at least one cellular, hierarchical radio communication system using different radio access technologies.
- the base station according to the invention and the network according to the invention are particularly suitable for carrying out the method according to the invention.
- appropriate means can be provided both in the base station according to the invention and in the network according to the invention in order to be able to carry out the method steps.
- Network architecture of a network with a local radio communication system and a cellular, hierarchical radio communication system is a network architecture of a network with a local radio communication system and a cellular, hierarchical radio communication system.
- the network comprises a local radio communication system - for example WLAN - with a radio access device AP and a cellular, hierarchical radio communication system - for example UMTS - with a base station BS, the radio coverage area (radio cell) of which is indicated in the figure by a hexagon.
- the base station BS is connected to the backbone network Bbl, the radio access device AP to a backbone network Bb2.
- the backbone networks Bbl and Bb2 are connected to one another. It There can furthermore - as shown in the figure - be an air interface between the base station and the radio access device AP. - This may make it easier to exchange information between the at least one base station BS and a radio access device AP.
- This connection via the air is not required in principle, since there is a connection via the backbone networks Bbl and Bb2.
- the subscriber stations MN1, MN2, MN3, MN4 and MN5 are located in the radio cell of the cellular, hierarchical radio communication system (e.g. UMTS).
- the cellular, hierarchical radio communication system e.g. UMTS
- the second category of type 2 also includes multi-mode radio stations which, despite their basic suitability, should not or should not be able to carry out any communication in the cellular, hierarchical radio communication system (for example because the resources available are too low or unfavorable).
- radio stations can also be present in the radio cell (not shown) which only support an interface to the cellular, hierarchical radio communication system, but not an interface to the local radio communication system.
- the stations MN3 and MN5 belong to the first category of the multi-mode radio stations of type 1, while the radio stations MN1, MN2 and MN4 count to the second category of type 2.
- Each radio station MN1, MN2, MN3, MN4 and MN5 now preferably periodically provides measurement and / or status information for measurements of the specific conditions of the radio stations and / or for states of the radio stations to the base station BS.
- the transmission can take place directly via the air interface of the cellular, hierarchical UMTS radio communication system, while the radio stations MN1, MN2 and MN4 transmit at least via the radio access device AP of the WLAN or via one of the radio stations with UMTS interface such as MN3 have to perform.
- the radio station providing measurement and / or status information is a type 1 radio station, for example radio station MN3 or MN5.
- the measurement and / or status information can be transmitted directly to the base station BS via the UMTS interface.
- the radio station providing measurement and / or status information is a type 2 radio station, for example radio station MN1.
- MNL radio station tries to transmit • the measurement and / or status information on a multi-hop path to the radio access device AP of the WLAN. Since the further-reaching radio station MN3 is a type 1 radio station with support for the UMTS interface, the information can be transmitted from the radio station MN3 directly to the base station BS via the UMTS air interface.
- Radio station MN2 a radio station of type 2. Radio station MN2 also transmits the measurement and / or status information via a multi-hop path.
- the relaying radio station MN4 is also a type 2 radio station and transmits the measurement and / or status information from the radio station MN2 to the
- Radio access device AP of the WLAN from where the measurement and / or status information about the Bachkbone networks Bb2 and Bbl to be sent to the base station BS.
- the radio access device AP of the WLAN can also send measurement and / or status information for measurements of the specific conditions of the radio access device AP to the base station BS as a radio station.
- the base station BS can evaluate the transmitted information and transmit corresponding signaling information to one or more radio stations.
- the base station BS can determine the load distribution in the network on the basis of the measurement information received. If there is a traffic congestion, the base station will locate it and, if necessary, e.g. propose suitable transmission powers for radio stations and transmit them to the radio access device AP so that the radio access device AP notifies the radio stations affected by the traffic congestion. In this way, the base station BS can control the network with heterogeneous radio stations.
- the base station can transmit the signaling information to the radio stations of the WLAN via the radio access device AP. This is particularly suitable if the initiative comes from the base station BS.
- the base station BS can transmit the signaling information to the radio station via a path of the local radio communication system. This is particularly useful if a request has been made by a radio station.
- Each type 1 radio station can send a request for certain information to the base station.
- the radio station MN1 in the figure wants to send useful information to the To transmit radio station MN2, radio station MN1 requires the path to radio station MN2.
- MNl recognized its neighbor MN3 by signal measurement. This result is transmitted to the base station BS.
- the radio stations MN2, MN3 and MN4 also transmit their neighboring knowledge to the base station. These are the radio station MNS for the radio station MN2, for the radio station MN3 these are the radio stations MN1, MN4 and the radio access device AP; for the radio station MN4 these are the radio stations MN2 and MN3.
- the base station can compile this information in a neighborhood table.
- the neighborhood information about the radio network part of the WLAN is advantageously held at least temporarily in the base station BS. Depending on determinable conditions, criteria can be selected as to when and which information about the WLAN no longer has to be stored or need to be stored.
- radio station MN1 In order to find out a path for the planned transmission of user information to the radio station MN2, radio station MN1 broadcasts a request for a path (route request). Radio station MN3 receives this route request from radio station MN1 to radio station MN2 and forwards it to the base station BS. The base station BS searches in the neighborhood table for the desired paths. The base station BS signals this path information (in the example mentioned: MN1 to MN3 to MN4 to MN2) to radio station MN3. Radio station MN3 forwards the path information to radio station MN1. Using the communicated path, radio station MN1 can now communicate with radio station MN2 in the WLAN.
- this path information in the example mentioned: MN1 to MN3 to MN4 to MN2
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020057016261A KR101089351B1 (ko) | 2003-03-03 | 2004-02-25 | 로컬 무선통신시스템 및 셀룰러 무선통신시스템을 갖는네트워크에서 정보를 전송하기 위한 방법 및 기지국 |
EP04714299A EP1599971B1 (de) | 2003-03-03 | 2004-02-25 | Verfahren zur uebertragung von informationen in einem netzwerk mit einem lokalen funkkommunikationssystem und einem zellularen funkkommunikationssystem und basisstation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03004675.9 | 2003-03-03 | ||
EP03004675A EP1455485A1 (de) | 2003-03-03 | 2003-03-03 | Verfahren zur Übertragung von Informationen in einem heterogenen Netzwerk bestehend aus einem lokalen (WLAN) und einem zellularen Funkkommunikationssystem unter Kontrolle der Basisstation des zellularen Funkkommunikationssystems |
Publications (1)
Publication Number | Publication Date |
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WO2004079996A1 true WO2004079996A1 (de) | 2004-09-16 |
Family
ID=32798757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/001876 WO2004079996A1 (de) | 2003-03-03 | 2004-02-25 | Verfahren zur übertragung von informationen in einem netzwerk mit einem lokalen funkkommunikationssystem und einem zellularen funkkommunikationssystem und basisstation |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP1455485A1 (de) |
KR (1) | KR101089351B1 (de) |
CN (1) | CN100417111C (de) |
AT (1) | ATE330401T1 (de) |
WO (1) | WO2004079996A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10350889A1 (de) * | 2003-10-31 | 2005-06-09 | Siemens Ag | Verfahren zur Ermittlung eines Pfades in einem Adhoc-Funkkommunikationssystem |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5612948A (en) * | 1994-11-18 | 1997-03-18 | Motorola, Inc. | High bandwidth communication network and method |
EP1195948A2 (de) * | 2000-10-06 | 2002-04-10 | Mitsubishi Denki Kabushiki Kaisha | Drahtloses mobiles Netzwerk zur örtlichen Leitweglenkung von Multimedia-Daten |
US20030022667A1 (en) * | 2001-07-28 | 2003-01-30 | Samsung Electronics Co., Ltd. | Multimedia service providing system and method using bluetooth communications in mobile communication system |
-
2003
- 2003-03-03 EP EP03004675A patent/EP1455485A1/de not_active Withdrawn
-
2004
- 2004-02-25 KR KR1020057016261A patent/KR101089351B1/ko not_active IP Right Cessation
- 2004-02-25 WO PCT/EP2004/001876 patent/WO2004079996A1/de active IP Right Grant
- 2004-02-25 AT AT04714299T patent/ATE330401T1/de not_active IP Right Cessation
- 2004-02-25 CN CNB2004800056783A patent/CN100417111C/zh not_active Expired - Lifetime
- 2004-02-25 EP EP04714299A patent/EP1599971B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5612948A (en) * | 1994-11-18 | 1997-03-18 | Motorola, Inc. | High bandwidth communication network and method |
EP1195948A2 (de) * | 2000-10-06 | 2002-04-10 | Mitsubishi Denki Kabushiki Kaisha | Drahtloses mobiles Netzwerk zur örtlichen Leitweglenkung von Multimedia-Daten |
US20030022667A1 (en) * | 2001-07-28 | 2003-01-30 | Samsung Electronics Co., Ltd. | Multimedia service providing system and method using bluetooth communications in mobile communication system |
Also Published As
Publication number | Publication date |
---|---|
CN1757199A (zh) | 2006-04-05 |
KR101089351B1 (ko) | 2011-12-02 |
ATE330401T1 (de) | 2006-07-15 |
KR20050117530A (ko) | 2005-12-14 |
EP1599971B1 (de) | 2006-06-14 |
EP1455485A1 (de) | 2004-09-08 |
EP1599971A1 (de) | 2005-11-30 |
CN100417111C (zh) | 2008-09-03 |
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