EP1656807A1 - Method for operating a radio communication system - Google Patents

Method for operating a radio communication system

Info

Publication number
EP1656807A1
EP1656807A1 EP04724612A EP04724612A EP1656807A1 EP 1656807 A1 EP1656807 A1 EP 1656807A1 EP 04724612 A EP04724612 A EP 04724612A EP 04724612 A EP04724612 A EP 04724612A EP 1656807 A1 EP1656807 A1 EP 1656807A1
Authority
EP
European Patent Office
Prior art keywords
radio
message
station
network
radio channel
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.)
Withdrawn
Application number
EP04724612A
Other languages
German (de)
French (fr)
Inventor
Patricia Bertram
Christina Gessner
Christian Klaussner
Stephan Laue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Solutions and Networks GmbH and Co KG
Original Assignee
Siemens AG
Nokia Siemens Networks GmbH and Co KG
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 AG, Nokia Siemens Networks GmbH and Co KG filed Critical Siemens AG
Publication of EP1656807A1 publication Critical patent/EP1656807A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access

Definitions

  • Radio communication systems are used to transmit information, voice or data using electromagnetic waves via a radio interface between a transmitting and a receiving radio station.
  • An example of a radio communication system is the well-known GSM mobile radio network, as well as its further development GPRS, the architecture of which is described, for example, in B Walke, mobile radio networks and their protocols, Volume 1, Teubner-Verlag Stuttgart, 1998, pages 139 to 151 and pages 295 to 311 is.
  • a channel formed by a narrow-band frequency range and a time slot is provided for the transmission of a subscriber signal.
  • a radio communication system for example a GSM mobile radio network with GPRS, comprises a large number of packet data service nodes (serving GPRS support node)
  • the radio communication system comprises mobile switching parts which are networked with one another and which provide access to a fixed network.
  • the packet data service nodes and the mobile switching centers are also connected to base station controllers (BSC).
  • BSC base station controllers
  • Each base station controller in turn enables a connection to at least one base station (BTS) and manages the radio technology resources of the connected base stations.
  • BTS base station
  • Base station and base station control are referred to as the base station system.
  • a base station is a transceiver unit which can set up a communication link to subscriber stations via a radio interface.
  • a radio channel from the base station to the subscriber station is used as a downward radio channel or downlink radio channel and a radio channel from the subscriber station to the base station is used as Radio channel called upward or uplink radio channel.
  • a dedicated channel is assigned to the subscriber station, via which a message transmission can take place.
  • Novel data services have been proposed in which a radio station, for example a base station, transmits data without these data being assigned to a special connection. Rather, the data are sent in the form of a radio broadcast and can be received by all subscriber stations located in the radio communication network, in particular within the range of the base station or by a defined group of subscriber stations located in the radio communication system. The receiving subscriber stations can be in the idle state, i.e. Tdle Mode.
  • These services also include the service proposed under the term "Multimedia Broadcast Multicast Services" with the abbreviation "MBMS" for the GERAN standard and the UTRAN standard.
  • MBMS Multimedia Broadcast Multicast Services
  • Potential subscribers to such data services can be registered in the radio communication system. They are then provided with an identifier and can be assigned as a group to specific signaling channels, for example as a paging group to a paging channel. These services are billed through registration.
  • the data are only transmitted by a network radio station. That is, it only radio channels in the downward direction are used.
  • radio communication systems for example in accordance with or similar to the GERAN standard, one radio channel in the downward direction and one radio channel in the upward direction are permanently assigned to one another. In this case, only the downlink radio channel is used for these data services.
  • the invention is based on the problem of specifying a method for operating a radio communication system in which
  • Radio channels in the upward direction and radio channels in the downward direction can be used effectively.
  • a subscriber station receives data which are transmitted by a network-side radio station via a radio channel in the downlink direction, without a logical connection between the subscriber station and the network side Radio station is set up.
  • the network-side radio station is designed, for example, as a base station system with a base station and base station controller.
  • the data is, for example, data from an MBMS service. From the subscriber station, one is assigned via a radio channel in the uplink direction, which is assigned to the radio channel in the downlink direction, via which the data is sent
  • Sent message This message is from the network side Radio station transmitted via the radio channel in the downward direction.
  • the message can also be received by all participants, the data from the network side
  • Radio station are sent over the radio channel in the downward direction, received.
  • the message can be, for example, a comment on the data received. If the received data represents a video clip, for example, the message can contain feedback on the video clip.
  • the subscriber station takes the parameters of the assigned radio channel in the waiting direction of a signaling message from the network-side radio station.
  • the subscriber station determines the parameters of the assigned radio channel in the upward direction based on the parameters of the radio channel in the downward direction.
  • the transmission of the message over the radio channel in the downward direction is preferably carried out with a lower priority than the transmission of the data over the radio channel in the downward direction. This ensures that the deadline requirement for the transmission of data via the radio channel in the downward direction can be met.
  • the message is preferably mirrored in the network-side radio station and transmitted multiplexed with the data via the radio channel in the downward direction.
  • the message is received in the network-side radio station and transmitted together with the data by the network-side radio station via the radio channel in the downward direction.
  • An advantage of this procedure is that the rest of the radio communication system is not burdened with the message. It is particularly conceivable that no fees are charged for the message that only reaches the network-side radio station.
  • This identifier can be entered in the radio link control medium access control protocol, for example.
  • the message can be sent from the subscriber station to the network-side radio station without a logical connection being established between the radio station and the network-side radio station, i. H. when the subscriber station is in idle mode or in so-called idle mode.
  • the message can be transmitted between the subscriber station and the network-side radio station if a connection for packet data transmission is set up between the subscriber station and the network-side radio station.
  • a special type of connection can be provided in the radio communication system, which is reserved for messages of this type that are sent via radio channels in the uplink direction and are assigned to the radio channels in the downlink direction, via which data are sent, without a logical connection between the transmitter network radio station and the data receiving subscriber stations is set up.
  • the method allows the subscribers to interact without requiring a dedicated connection between the network radio station and the subscriber stations.
  • the process can be carried out without the involvement of the core network.
  • By appropriately prioritizing the messages a negative influence on the data transmission in the radio channel in the downward direction is avoided.
  • the method is suitable for all data transmissions that take place without a logical connection between a subscriber station and a network radio station. When the message is received and retransmitted, neither data processing nor subscriber identification are required.
  • the method is explained in more detail below using an example which is illustrated in the figure.
  • the figure shows a message flow in a radio communication system.
  • data is sent in an MBMS data service 1 from a packet switching unit SGSN via a base station system BSS, which comprises a base station controller BSC and a base station BTS.
  • BSS which comprises a base station controller BSC and a base station BTS.
  • a first subscriber station MSI and a second subscriber station MS2 receive the data transmitted by the MBMS service 1 without a logical connection between the first subscriber station MSI or the second subscriber station MS2 and the base station system BSS existed.
  • the first subscriber station MSI sends a message, which contains, for example, feedback on the received data, via a radio channel in the upward direction, which is assigned to the radio channel in the downward direction, via which the data of the MBMS service 1 was sent, to the base station system BSS ,
  • a rerouting 3 of the message 2 takes place in the base station system BSS.
  • an identifier is entered for the message in the radio link control medium access control protocol, which identifies that this message is not transmitted to the packet switching unit SGSN.
  • the message 2 is multiplexed with the data of the MBMS service 1, which are transmitted from the packet switching unit SGSN to the base station system BSS, and in a common transmission 4 via the channel in the downward direction to the first subscriber station MSI and second subscriber station MS2 sent.
  • the priority of the message 2 is lower than that of the data of the MBMS service 1, so that real-time requests of the MBMS service 1 are retained. Both the subscriber station MSI and the subscriber station MS2 can now receive the data of the MBMS service 1 and the message 2. In this way, the message 2 is made available to all subscriber stations that receive data from the MBMS service 1.
  • the reception, the redirection and the transmission of the message 2 can be carried out free of charge.
  • This service is then included in the fee charged for MBMS service 1. No identification of message 2 is carried out in the base station system BSS. It is redirected transparently. It will too how the data of the MBMS service 1 is sent undirected in the sense of a radio transmission.

Abstract

The invention relates to a radiocommunication system in which a downward link radio channel associated with an upward link radio channel, respectively, a subscriber station receives data from a radio station on a network side to the downward link radio channel, no logic liaison being established between the subscriber station and the radio station on the network side. A message is sent by the subscriber station to the downward link radio channel associated with the upward link radio channel. Said message is emitted by the radio station on the network side to the upward link radio channel.

Description

Beschreibungdescription
Verfahren zum Betrieb eines Funkkommunikationssystems Funkkommunikationssysteme dienen der Übertragung von Informationen, Sprache oder Daten, mit Hilfe von elektromagnetischen Wellen über eine Funkschnittstelle zwischen einer sendenden und einer empfangenden Funkstation. Ein Beispiel für ein Funkkommunikationssystem ist das bekannte GSM-Mobilfunknetz, sowie dessen Weiterentwicklung GPRS, dessen Architektur zum Beispiel in B Walke, Mobilfunknetze und ihre Protokolle, Band 1, Teubner-Verlag Stuttgart, 1998, Seite 139 bis 151 und Seite 295 bis 311 beschrieben ist. Dabei ist zur Übertragung eines Te lnehmersignals jeweils ein durch einen schmalbandi- gen Frequenzbereich und einen Zeitschlitz gebildeter Kanal vorgesehen .Method for operating a radio communication system Radio communication systems are used to transmit information, voice or data using electromagnetic waves via a radio interface between a transmitting and a receiving radio station. An example of a radio communication system is the well-known GSM mobile radio network, as well as its further development GPRS, the architecture of which is described, for example, in B Walke, mobile radio networks and their protocols, Volume 1, Teubner-Verlag Stuttgart, 1998, pages 139 to 151 and pages 295 to 311 is. In this case, a channel formed by a narrow-band frequency range and a time slot is provided for the transmission of a subscriber signal.
Zur Paketdatenvermittlung umfasst ein Funkkommunikationssys- tem, zum Beispiel ein GSM-Mobilfunknetz mit GPRS, eine VieJ- zahl von Paketdatendienstknoten (Serving GPRS Support NodeFor packet data transmission, a radio communication system, for example a GSM mobile radio network with GPRS, comprises a large number of packet data service nodes (serving GPRS support node)
SGSN) , die untereinander vernetzt sind und die den Zugang zu einem Festdatennetz herstellen. Zur leitungsvermittelten Datenübertragung umfasst das Funkkommunikationssystem Mobil vermittlungssteilen, die untereinander vernetzt sind und die den Zugang zu einem Festnetz herstellen. Die Paketdatendienstknoten und die Mobilvermittlungsstellen sind ferner mit Basis- stationssteuerungen (BSC) verbunden. Jede Basisstationssteue- rung ermöglicht wiederum e ne Verbindung zu mindestens einer Basisstation (BTS) und nimmt die Verwaltung der funkLechni- sehen Ressourcen der angeschlossenen Basisstationen vor. Basisstation und Basistationsstcuerung werden als Basisstati- onssystem bezeichnet. Eine Basisstation ist e ne Sende/Em- pfangseinheit, die über eine Funkschnittstelle eine Nachrichtenverbindung zu Teilnehmerstationen aufbauen kann. Dabei wird ein Funkkanal von der Basisstation zur Teilnehmerstation als Funkkanal in Abwartsrichtung oder Downlink-Funkkanal und ein Funkkanal von der Teilnehmerstation zur Basisstation als Funkkanal in Aufwartsrichtung oder Uplink-Funkkanal bezeichnet .SGSN), which are networked with each other and which provide access to a fixed data network. For circuit-switched data transmission, the radio communication system comprises mobile switching parts which are networked with one another and which provide access to a fixed network. The packet data service nodes and the mobile switching centers are also connected to base station controllers (BSC). Each base station controller in turn enables a connection to at least one base station (BTS) and manages the radio technology resources of the connected base stations. Base station and base station control are referred to as the base station system. A base station is a transceiver unit which can set up a communication link to subscriber stations via a radio interface. A radio channel from the base station to the subscriber station is used as a downward radio channel or downlink radio channel and a radio channel from the subscriber station to the base station is used as Radio channel called upward or uplink radio channel.
Man unterscheidet zwei Betriebsmodi einer Teilnehmerstation: Im Ruhezustand, für den in der Fachwelt der Begriff "Idle mode" gebrauchlich ist, besteht keine logische Verbindung zwischen der Teilnehmerstation und einer Basisstation. Im de- dizierten Zustand, für den auch der Begriff "dedicated mode" gebrauchlich ist, besteht eine logische Verbindung zwischen der Teilnehmerstation und einer Basisstation, in der derA distinction is made between two operating modes of a subscriber station: In the idle state, for which the term "idle mode" is used in the professional world, there is no logical connection between the subscriber station and a base station. In the dedicated state, for which the term “dedicated mode” is also used, there is a logical connection between the subscriber station and a base station in which the
Teilnehmerstation ein dedizierter Kanal zugeordnet ist, über den eine Nachrichtenübertragung erfolgen kann.A dedicated channel is assigned to the subscriber station, via which a message transmission can take place.
Es sind neuartige Datendienste vorgeschlagen worden, bei de- nen eine Funkstation, zum Beispiel eine Basisstation, Daten aussendet, ohne dass diese Daten einer speziellen Verbindung zugeordnet sind. Vielmehr werden die Daten im Sinne einer Rundfunkaussendung gesendet und können von allen im Funkkommunikationsnetz befindlichen Teilnehmerstationen insbesondere innerhalb der Reichweite der Basisstation oder einer definierten Gruppe von im Funkkommunikationssystem befindlichen Teilnehmerstationen empfangen werden. Die empfangenden Teilnehmerstationen können sich dabei im Ruhezustand, d.h. Tdle Mode, befinden. Zu diesen Dienste gehört auch der unter dem Begriff "Multimedia Broadcast Multicast Services" mi der Abkürzung "MBMS" für den GERAN-Standard und den UTRAN-Standard vorgeschlagene Dienst.Novel data services have been proposed in which a radio station, for example a base station, transmits data without these data being assigned to a special connection. Rather, the data are sent in the form of a radio broadcast and can be received by all subscriber stations located in the radio communication network, in particular within the range of the base station or by a defined group of subscriber stations located in the radio communication system. The receiving subscriber stations can be in the idle state, i.e. Tdle Mode. These services also include the service proposed under the term "Multimedia Broadcast Multicast Services" with the abbreviation "MBMS" for the GERAN standard and the UTRAN standard.
Potentielle Teilnehmer derartiger Datendienste können sich im Funkkommunikationssystem registrieren lassen. Sie werden dann mit einer Kennung versehen und können als Gruppe bestimmten Signalisierungskanalen, zum Beispiel als Paging-Gruppe einem Paging-Kanal, zugewiesen werden. Die Abrechnung für diese Dienste erfolgt über die Registrierung.Potential subscribers to such data services can be registered in the radio communication system. They are then provided with an identifier and can be assigned as a group to specific signaling channels, for example as a paging group to a paging channel. These services are billed through registration.
In diesen Datendiensten werden die Daten ausschließlich von einer netzseitigen Funkstation ausgesendet. Das heißt, es werden ausschließlich Funkkanale in Abwartsrichtung benutzt. In Funkkommunikationssystemen beispielsweise entsprechend o- der ahnlich dem GERAN-Standard sind jeweils ein Funkkanal in Abwartsrichtung und ein Funkkanal in Aufwartsrichtung einan- der fest zugeordnet. Bei diesen Datendiensten wird in diesem Fall nur der Funkkanal in Abwartsrichtung genutzt.In these data services, the data are only transmitted by a network radio station. That is, it only radio channels in the downward direction are used. In radio communication systems, for example in accordance with or similar to the GERAN standard, one radio channel in the downward direction and one radio channel in the upward direction are permanently assigned to one another. In this case, only the downlink radio channel is used for these data services.
Es ist vorgeschlagen worden, den zugeordneten Funkkanal in Aufwartsrichtung in den MBMS-Dienst zum Zahlen der Teilnehmer auf einem speziellen Kanal mit wahlfreiem Zugriff oder für normale Daten in Aufwartsrichtung zu verwenden (siehe z. B. GP-030667, 3GPP TSG GERAN#14 Meeting) .It has been proposed to use the assigned uplink radio channel in the MBMS service to pay subscribers on a special channel with random access or for normal uplink data (see e.g. GP-030667, 3GPP TSG GERAN # 14 Meeting ).
Der Erfindung liegt das Problem zugrunde, ein Verfahren zum Betrieb eines Funkkommunikationssystems anzugeben, bei demThe invention is based on the problem of specifying a method for operating a radio communication system in which
Funkkanale in Aufwartsrichtung und Funkkanale in Abwartsrichtung effektiv genutzt werden.Radio channels in the upward direction and radio channels in the downward direction can be used effectively.
Dieses Problem wird gelost durch ein Verfahren gemäß Anspruch 1. Weitere Ausgestaltungen der Erfindung gehen aus den übrigen ünteranspruchen hervor.This problem is solved by a method according to claim 1. Further developments of the invention emerge from the remaining subclaims.
In einem Funkkommunikationssystem, in dem jeweils ein Funkkanal in Aufwartsrichtung und ein Funkkanal in Abwartsrichtung einander zugeordnet sind, empfangt eine Teilnehmerstation Daten, die von einer netzseitigen Funkstation über einen Funkkanal in Abwartsr chtung ausgesendet werden, ohne dass eine logische Verbindung zwischen der Teilnehmerstation und der netzseitigen Funkstation eingerichtet ist. Die netzseitige Funkstation ist beispielweise als Basistationssystem mit Basisstation und Basistationssteuerung ausgebildet. Bei den Daten handelt es sich beispielsweise um Daten eines MBMS- Dienstes. Von der Teilnehmerstation wird über einen Funkkanal in Aufwartsrichtung, der dem Funkkanal in Abwartsrichtung, über den die Daten gesendet werden, zugeordnet ist, eineIn a radio communication system, in each of which a radio channel in the uplink direction and a radio channel in the downlink direction are assigned to one another, a subscriber station receives data which are transmitted by a network-side radio station via a radio channel in the downlink direction, without a logical connection between the subscriber station and the network side Radio station is set up. The network-side radio station is designed, for example, as a base station system with a base station and base station controller. The data is, for example, data from an MBMS service. From the subscriber station, one is assigned via a radio channel in the uplink direction, which is assigned to the radio channel in the downlink direction, via which the data is sent
Nachricht gesendet. Diese Nachricht wird von der netzseitigen Funkstation über den Funkkanal in Abwartsrichtung ausgesendet.Sent message. This message is from the network side Radio station transmitted via the radio channel in the downward direction.
Dadurch kann die Nachricht von allen Teilnehmern ebenfalls empfangen werden, die die Daten, die von der netzseitigenAs a result, the message can also be received by all participants, the data from the network side
Funkstation über den Funkkanal in Abwartsrichtung ausgesendet werden, empfangen. Bei der Nachricht kann es sich beispielsweise um einen Kommentar zu den empfangenen Daten handeln. Stellen die empfangenen Daten beispielsweise einen Videoclip dar, so kann die Nachricht ein Feedback zu dem Videoclip enthalten .Radio station are sent over the radio channel in the downward direction, received. The message can be, for example, a comment on the data received. If the received data represents a video clip, for example, the message can contain feedback on the video clip.
Es liegt im Rahmen der Erfindung, dass die Teilnehmerstation die Parameter des zugeordneten Funkkanals in Aufwartsrichtung einer Signalisierungsnachricht der netzseitigen Funkstation entnimmt. Alternativ bestimmt die Teilnehmerstation die Parameter des zugeordneten Funkkanals in Aufwartsrichtung aufgrund der Parameter des Funkkanals in Abwartsrichtung. Vorzugsweise erfolgt die Aussendung der Nachricht über den Funkkanal in Abwartsrichtung mit einer geringeren Priorität als die Aussendung der Daten über den Funkkanal in Abwartsrichtung. Dadurch wird sichergestellt, dass die Fchtzeitan- forderung an die Aussendung der Daten über den Funkkanal in Abwartsrichtung eingehalten werden können.It is within the scope of the invention that the subscriber station takes the parameters of the assigned radio channel in the waiting direction of a signaling message from the network-side radio station. Alternatively, the subscriber station determines the parameters of the assigned radio channel in the upward direction based on the parameters of the radio channel in the downward direction. The transmission of the message over the radio channel in the downward direction is preferably carried out with a lower priority than the transmission of the data over the radio channel in the downward direction. This ensures that the deadline requirement for the transmission of data via the radio channel in the downward direction can be met.
Vorzugsweise wird die Nachricht in der netzseitigen Funkstation gespiegelt und gemultiplext mit den Daten über den Funkkanal in Abwartsrichtung ausgesendet. Dabei wird die Nach- rieht in der netzseitigen Funkstation empfangen und von der netzseitigen Funkstation über den Funkkanal in Abwartsrichtung gemeinsam mit den Daten ausgesendet. Ein Vorteil dieser Vorgehensweise besteht darin, dass das übrige Funkkommunikationssystem nicht mit der Nachricht belastet wird. Es ist da- bei insbesondere denkbar, dass für die Nachricht, die nur bis zu der netzseitigen Funkstation gelangt, keine Gebuhren erhoben werden. Dabei liegt es im Rahmen der Erfindung, die Nachricht mit einer Kennung zu versehen, die anzeigt, dass die Nachricht von der netzseitigen Funkstation nicht in Richtung eines Kernnetzes des Funkkommunikationssystems übertragen wird. Durch die Kennung wird sichergestellt, dass die Nachricht von der netzseitigen Funkstation wiederum über den Kanal in Abwartsrichtung ausgesendet wird, ohne dass die Nachricht ins Kernnetz gelangt .The message is preferably mirrored in the network-side radio station and transmitted multiplexed with the data via the radio channel in the downward direction. The message is received in the network-side radio station and transmitted together with the data by the network-side radio station via the radio channel in the downward direction. An advantage of this procedure is that the rest of the radio communication system is not burdened with the message. It is particularly conceivable that no fees are charged for the message that only reaches the network-side radio station. It is within the scope of the invention to provide the message with an identifier that indicates that the message is not transmitted by the network radio station in the direction of a core network of the radio communication system. The identifier ensures that the message is again transmitted by the network-side radio station via the channel in the downward direction without the message reaching the core network.
Diese Kennung kann beispielsweise in dem Radio link control Medium access control Protokoll eingetragen werden.This identifier can be entered in the radio link control medium access control protocol, for example.
Die Nachricht kann von der Teilnehmerstation zu der netzsei- tigen Funkstation gesendet werden, ohne dass eine logische Verbindung zwischen der Funkstation und der netzseitigen Funkstation eingerichtet ist, d. h. wenn sich die Teilnehmerstation im Ruhezustand oder im sogenannten Idle mode befindet.The message can be sent from the subscriber station to the network-side radio station without a logical connection being established between the radio station and the network-side radio station, i. H. when the subscriber station is in idle mode or in so-called idle mode.
Darüber hinaus kann die Nachricht zwischen der Teilnehmerstation und der netzseitigen Funkstation übertragen werden, wenn zwischen der Teilnehmerstation und der netzseitigen Funkstation in Aufwartsrichtung eine Verbindung zur Paketdatenuber- tragung eingerichtet ist.In addition, the message can be transmitted between the subscriber station and the network-side radio station if a connection for packet data transmission is set up between the subscriber station and the network-side radio station.
Ferner kann in dem Funkkommun ationssystem eine spezielle Verbindungsart vorgesehen sein, die für derartige Nachrichten reserviert ist, die über Funkkanale in Aufwartsrichtung ge- sendet werden, die Funkkanale in Abwartsrichtung zugeordnet sind, über die Daten gesendet werden, ohne dass eine logische Verbindung zwischen der sendenden netzseitigen Funkstation und die Daten empfangenden Teilnehmerstationen eingerichtet ist .Furthermore, a special type of connection can be provided in the radio communication system, which is reserved for messages of this type that are sent via radio channels in the uplink direction and are assigned to the radio channels in the downlink direction, via which data are sent, without a logical connection between the transmitter network radio station and the data receiving subscriber stations is set up.
Es liegt im Rahmen der Erfindung, den Umfang der Nachricht zu beschranken. Es kann z. B. dadurch erfolgen, dass die Anzahl der je Teilnehmer gesendeten Nachrichten pro Zeit oder pro Datenaussendung begrenzt wird. Ferner können für die einzelnen Teilnehmer Regeln aufgestellt werden. Damit soll verhindert werden, dass einzelne Teilnehmer den Funkkanal in Auf- wartsrichtung übermäßig nutzen. Diese Begrenzungen oder Regeln müssen der Teilnehmerstation vorab per Signalisierung mitgeteilt werden.It is within the scope of the invention to limit the scope of the message. It can e.g. B. done by the number the messages sent per subscriber are limited per time or per data transmission. Rules can also be drawn up for the individual participants. This is to prevent individual subscribers from using the radio channel excessively in the uplink direction. These limits or rules must be communicated to the subscriber station in advance via signaling.
Das Verfahren erlaubt eine Interaktivität der Teilnehmer, oh- ne dass eine dedizierte Verbindung zwischen der netzseitigen Funkstation und den Teilnehmerstationen erforderlich wäre. Das Verfahren kann ohne Beteiligung des Kernnetzes durchgeführt werden. Durch entsprechende Priorisierung der Nachrichten wird ein negativer Einfluss auf die Datenaussendung in dem Funkkanal in Abwartsrichtung vermieden. Das Verfahren ist für alle Datenaussendungen geeignet, die ohne logische Verbindung zwischen einer Teilnehmerstation und einer netzseitigen Funkstation erfolgen. Beim Empfang und beim Wiederaussenden der Nachricht sind weder eine Prozessierung der Daten noch eine Teilnehmeridentifikation erforderlich.The method allows the subscribers to interact without requiring a dedicated connection between the network radio station and the subscriber stations. The process can be carried out without the involvement of the core network. By appropriately prioritizing the messages, a negative influence on the data transmission in the radio channel in the downward direction is avoided. The method is suitable for all data transmissions that take place without a logical connection between a subscriber station and a network radio station. When the message is received and retransmitted, neither data processing nor subscriber identification are required.
Im folgenden wird das Verfahren anhand eines Beispiels, das in der Figur dargestellt ist, naher erläutert. D e Figur zeigt einen Nachr chtenf1 uss in einem Funkkommunikationssystem.The method is explained in more detail below using an example which is illustrated in the figure. The figure shows a message flow in a radio communication system.
In einem Funkkommunikationssystem, das beispielsweise entsprechend oder ahnlich dem GERAN Standard aufgebaut ist, wer- den in einem MBMS Datendienst 1 Daten von einer Paketvermittlungseinheit SGSN über ein Basisstationssystem BSS, das eine Basisstationssteuerung BSC und eine Basisstation BTS umfasst, Daten ausgesendet. Eine erste Teilnehmerstation MSI und eine zweite Teilnehmerstation MS2 empfangen die von dem MBMS Dienstes 1 ausgesendeten Daten, ohne dass eine logische Verbindung zwischen der ersten Teilnehmerstation MSI bzw. der zweiten Teilnehmerstation MS2 und dem Basisstationssystem BSS bestünde. Die erste Teilnehmerstation MSI sendet eine Nachricht, die z.B. ein Feedback zu den empfangenen Daten enthalt, über einen Funkkanal in Aufwartsrichtung, der dem Funkkanal in Abwartsrichtung, über den die Daten des MBMS Diens- tes 1 gesendet wurden, zugeordnet ist, an das Basisstationssystem BSS.In a radio communication system that is constructed, for example, in accordance with or similar to the GERAN standard, data is sent in an MBMS data service 1 from a packet switching unit SGSN via a base station system BSS, which comprises a base station controller BSC and a base station BTS. A first subscriber station MSI and a second subscriber station MS2 receive the data transmitted by the MBMS service 1 without a logical connection between the first subscriber station MSI or the second subscriber station MS2 and the base station system BSS existed. The first subscriber station MSI sends a message, which contains, for example, feedback on the received data, via a radio channel in the upward direction, which is assigned to the radio channel in the downward direction, via which the data of the MBMS service 1 was sent, to the base station system BSS ,
In dem Basisstationssystem BSS erfolgt eine Umleitung 3 der Nachricht 2. Dazu wird für die Nachricht in dem Radio link control Medium access control Protokoll eine Kennung eingetragen, die kennzeichnet, dass diese Nachricht nicht an die Paketvermittlungseinheit SGSN übertragen wird. In dem Basisstationssystem BSS wird die Nachricht 2 mit den Daten des MBMS Dienstes 1, die von der Paketvermittlungseinheit SGSN, an das Basisstationssystem BSS übertragen werden, gemultip- lext und in einer gemeinsamen Übertragung 4 über den Kanal in Abwartsrichtung an die erste Teilnehmerstation MSI und die zweite Teilnehmerstation MS2 gesendet.A rerouting 3 of the message 2 takes place in the base station system BSS. For this purpose, an identifier is entered for the message in the radio link control medium access control protocol, which identifies that this message is not transmitted to the packet switching unit SGSN. In the base station system BSS, the message 2 is multiplexed with the data of the MBMS service 1, which are transmitted from the packet switching unit SGSN to the base station system BSS, and in a common transmission 4 via the channel in the downward direction to the first subscriber station MSI and second subscriber station MS2 sent.
Dabei ist die Priorität der Nachricht 2 geringer als die der Daten des MBMS Dienstes 1, so dass Echtzeitanforderungen des MBMS Dienstes 1 erhalten bleiben. Sowohl die Teilnehmerstation MSI als auch die Teilnehmerstation MS2 können nun die Daten des MBMS Dienstes 1 und die Nachricht 2 empfangen. Auf diese Weise wird die Nachricht 2 allen Teilnehmerstationen zur Verfugung gestellt, die Daten des MBMS Dienstes 1 empfangen .The priority of the message 2 is lower than that of the data of the MBMS service 1, so that real-time requests of the MBMS service 1 are retained. Both the subscriber station MSI and the subscriber station MS2 can now receive the data of the MBMS service 1 and the message 2. In this way, the message 2 is made available to all subscriber stations that receive data from the MBMS service 1.
Da die Nachricht 2 in dem Basisstationssystem BSS umgeleitet wird, ohne an die Paketvermittlungseinheit SGSN oder darüber hinaus in das Funkkommunikationssystem zu gelangen, kann der Empfang die Umleitung und die Aussendung der Nachricht 2 gebührenfrei erfolgen. Dieser Dienst ist dann in der für den MBMS Dienst 1 erhobenen Gebuhr enthalten. In dem Basisstati- onssystem BSS wird keinerlei Identifikation der Nachricht 2 vorgenommen. Sie wird transparent umgeleitet. Sie wird ebenso wie die Daten des MBMS Dienstes 1 ungerichtet im Sinne einer Rundfunkübertragung ausgesendet . Since the message 2 is redirected in the base station system BSS without reaching the packet switching unit SGSN or beyond in the radio communication system, the reception, the redirection and the transmission of the message 2 can be carried out free of charge. This service is then included in the fee charged for MBMS service 1. No identification of message 2 is carried out in the base station system BSS. It is redirected transparently. It will too how the data of the MBMS service 1 is sent undirected in the sense of a radio transmission.

Claims

Patentansprüche claims
1. Verfahren zum Betrieb eines Funkkommunikationssystems, bei dem jeweils ein Funkkanal in Aufwartsrichtung und ein Funkkanal in Abwartsrichtung einander zugeordnet sind, bei dem eine Teilnehmerstation Daten empfangt, die von einer netzseitigen Prufstation über einen Funkkanal in Abwartsrichtung ausgesendet werden, ohne dass eine logische Verbindung zwischen der Teilnehmerstation und der netzsei- tigen Funkstation eingerichtet ist, bei dem von der Teilnehmerstation eine Nachricht über einen Funkkanal in Aufwartsrichtung gesendet wird, der dem Funkkanal in Abwartsrichtung zugeordnet ist, bei dem die Nachricht von der netzseitigen Funkstation u- ber den Funkkanal in Abwartsrichtung ausgesendet wird.1.Method for operating a radio communication system, in which a radio channel in the uplink direction and a radio channel in the downlink direction are assigned to each other, in which a subscriber station receives data which is transmitted by a network-side test station via a radio channel in the downlink direction, without a logical connection between the subscriber station and the network-side radio station is set up, in which a message is sent by the subscriber station via a radio channel in the uplink direction, which is assigned to the radio channel in the downlink direction, in which the message is transmitted by the network-side radio station via the radio channel in the downlink direction becomes.
2. Verfahren nach Anspruch 1, bei dem die Teilnehmerstation die Parameter des zugeordneten Funkkanals in Aufwartsrichtung einer Signali s erungs- nachricht der netzseitigen Funkstation entnimmt oder aufgrund der Parameter des Funkkanals in Abwartsrichtung bestimmt .2. The method as claimed in claim 1, in which the subscriber station takes the parameters of the assigned radio channel in the upward direction from a signaling message from the network-side radio station or determines them in the downward direction on the basis of the parameters of the radio channel.
3. Verfahren nach Anspruch 1 oder 2, - bei dem die Aussendung der Nachricht über den Funkkanal in Abwartsrichtung mit einer geringeren Priorität als die Aussendung der Daten über den Funkkanal in Abwartsrichtung erfolgt .3. The method according to claim 1 or 2, - in which the transmission of the message over the radio channel in the downward direction takes place with a lower priority than the transmission of the data over the radio channel in the downward direction.
4. Verfahren nach einem der Ansprüche 1 bis 3, bei dem die Nachricht in der netzseitigen Funkstation gespiegelt wird und gemultiplext mit den Daten über den Funkkanal in Abwartsrichtung ausgesendet wird. 4. The method according to any one of claims 1 to 3, in which the message is mirrored in the network-side radio station and is transmitted multiplexed with the data via the radio channel in the downward direction.
5. Verfahren nach Anspruch 4,5. The method according to claim 4,
- bei dem die Nachricht mit einer Kennung versehen wird, die anzeigt, dass die Nachricht von der netzseitigen Funksta tion nicht in Richtung eines Kernnetzes des Funkkommunikationssystems übertragen wird.- In which the message is provided with an identifier that indicates that the message from the network radio station tion is not transmitted in the direction of a core network of the radio communication system.
6. Verfahren nach einem Ansprüche 1 bis 5, - bei dem die Nachricht von der Teilnehmerstation zu der netzseitigen Funkstation gesendet wird, ohne dass eine logische Verbindung zwischen der Teilnehmerstation und der netzseitigen Funkstation eingerichtet wird. 6. The method according to any one of claims 1 to 5, - in which the message is sent from the subscriber station to the network radio station without a logical connection between the subscriber station and the network radio station being set up.
7. Verfahren nach einem der Ansprüche 1 bis 5, bei dem zwischen der Teilnehmerstation und der netzseitigen Funkstation in Aufwartsrichtung eine Verbindung zur Paketdatenübertragung eingerichtet wird, über die die Nachricht übertragen wird.7. The method according to any one of claims 1 to 5, in which a connection for packet data transmission is established between the subscriber station and the network radio station in the waiting direction, via which the message is transmitted.
Verfahren nach einem der Ansprüche 1 bis 7, bei dem der Umfang der Nachricht beschrankt wird. Method according to one of claims 1 to 7, in which the scope of the message is limited.
EP04724612A 2003-04-29 2004-03-31 Method for operating a radio communication system Withdrawn EP1656807A1 (en)

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