WO2002058423A1 - Method for transmitting signals in a radio communication system - Google Patents

Method for transmitting signals in a radio communication system Download PDF

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Publication number
WO2002058423A1
WO2002058423A1 PCT/DE2002/000106 DE0200106W WO02058423A1 WO 2002058423 A1 WO2002058423 A1 WO 2002058423A1 DE 0200106 W DE0200106 W DE 0200106W WO 02058423 A1 WO02058423 A1 WO 02058423A1
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Prior art keywords
transmission
channel
base station
shared
packet data
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PCT/DE2002/000106
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German (de)
French (fr)
Inventor
Fariba Raji
Axel Meiling
Joerg Schniedenharn
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Siemens Aktiengesellschaft
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Priority to DE10290174T priority Critical patent/DE10290174D2/en
Publication of WO2002058423A1 publication Critical patent/WO2002058423A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the invention relates to a method for signal transmission in a radio communication system.
  • the invention is particularly suitable for use in a mobile radio system or wireless subscriber line system.
  • radio communication systems for example the second generation GSM (Global System for Mobile Communications) European mobile radio system
  • information for example voice, image information or other data
  • the radio interface relates to a connection between a base station and subscriber stations, it being possible for the subscriber stations to be mobile stations or fixed radio stations.
  • the electromagnetic waves are emitted with carrier frequencies that lie in a frequency band provided for the respective system.
  • UMTS Universal Mobile Telecommunication System
  • 3rd generation systems frequencies in the frequency band of approx. 2000 MHz are provided.
  • Two modes are provided for the third mobile radio generation, one mode denoting FDD operation (frequency division duplex) and the other mode denoting TDD operation (time division duplex). These modes are used in different frequency bands. Both modes support a so-called CDMA subscriber separation procedure (Code Division Multiple Access).
  • CDMA subscriber separation procedure Code Division Multiple Access
  • TDD Time Division Duplex Stream
  • TS 25.221 Physical Channels and mapping of transport Channels onto physical Channels (TDD)", VI.1.0, 1999-06, 3GPP, TSG, RAN, WGl, in particular Chapter 5.4,
  • FDD Physical Channels and mapping of transport Channels onto physical Channels
  • FDD Physical layer procedures
  • the receiver confirms with each packet data transmission whether the packet was received correctly or not. This is done, for example, by means of the ACK or NACK confirmation message. In order to notify the sender of this confirmation, it is necessary to provide the recipient with a respective return channel for the transmission of the confirmation message after each packet data transmission.
  • ARQ Automatic Repeat Request
  • the object of the invention is to provide a method for quickly assigning a return channel with a low signaling to specify expenditure. This object is achieved by the method according to the features of patent claim 1. Further developments of the invention can be found in the dependent claims.
  • packet data are transmitted via so-called shared channels, i.e. physical transmission channels used in parallel by several logical connections. These channels are occupied by several participants, for example in accordance with a time-division multiplex method. A participant thus receives this resource from the network for a limited time.
  • shared channels i.e. physical transmission channels used in parallel by several logical connections. These channels are occupied by several participants, for example in accordance with a time-division multiplex method. A participant thus receives this resource from the network for a limited time.
  • the shared channels for the uplink (UL - uplink) and downlink (DL - downlink) have been separately requested and allocated or assigned. This means that a subscriber who is assigned a packet data channel for the transmission of data packets in the downward direction must subsequently independently request a return channel for the transmission of the confirmation message.
  • a return channel in the UL is automatically implicitly or explicitly assigned when the forward channel (in the DL) is allocated for the packet data transmission. If a subscriber now receives packet data via the downlink channel (DL), for example only this subscriber can use the subsequent and previously allocated return channel for his packet data confirmation in the upward direction (UL). If the subsequent data in the downlink channel is intended for another subscriber, the subscriber uses the return channel.
  • the advantage of this method is the low and fast signaling of access to the return channel for all participants using this shared channel.
  • the configuration of the invention enables a more flexible allocation of the return channel. If the subscriber is informed that the data packets in the downlink channel are intended for him, it is possible to inform him of a certain resource for the return channel at the same time. Depending on the system status, this resource can be adapted for each data transfer.
  • the invention resides in the common access signaling of outbound and return channels, which are used by several participants in the
  • Time-division multiplexing This technique is particularly advantageous for the ARQ methods described.
  • FIG. 1 shows a block diagram of a radio communication system
  • FIG. 2 shows a schematic representation of the structure of a TDD radio interface
  • FIG. 3 shows a schematic structure of time slots for signal transmission within a time frame of a TDD radio interface to explain the method according to the invention.
  • a mobile radio system consists of a multiplicity of mobile switching centers MSC which belong to a switching network (SSS - Switching Subsystem) and are networked with one another or the Establish access to a fixed network, and each from one or more base station systems BSS (base station subsystem) connected to these mobile switching centers MSC.
  • a base station system BSS in turn has at least one device RNC (RNC - Radio Network Controller) for assigning radio resources and at least one base station NB (node B) connected to it.
  • RNC Radio Network Controller
  • a base station NB can set up connections to subscriber stations ME (Mobile Entity), such as mobile stations or other mobile and stationary terminals, via a radio interface.
  • ME Mobile Entity
  • At least one radio cell Z is formed by each base station NB.
  • the size of the radio cell is generally determined by the range of a general signaling channel (BCCH - Broadcast Control Channel), which is transmitted by the base station NB with a predetermined transmission power.
  • BCCH - Broadcast Control Channel a general signaling channel
  • several radio cells can also be supplied per base station NB. The functionality of this structure can be transferred to other radio communication systems in which the invention can be used, in particular to subscriber access networks for wireless subscriber connection.
  • the frame structure of the radio transmission in the TDD mode of a UMTS mobile radio system can be seen from FIG. 2.
  • a TDMA component time division multiple access
  • a division of a broadband frequency range into several time slots ts of the same duration for example 15 time slots ts0 to tsl4, is provided, which form a time frame fr.
  • a frequency band B extends over a certain frequency range.
  • Some of the time slots are used for signal transmission in the downward direction DL and some of the time slots in the upward direction UL.
  • An example is an asymmetry ratio of 3: 1 in favor of the downward tung DL shown.
  • the frequency band B for the upward direction UL corresponds to the frequency band B for the downward direction DL.
  • the same is repeated for other carrier frequencies.
  • the data d are spread individually for each connection with a fine structure, a spread code c, so that, for example, n connections can be separated at the receiving end by this CDMA component (code division multiple access).
  • the spreading of individual symbols of the data d causes that within the symbol duration T Sym Q
  • Chips of the duration T c i p are transmitted.
  • the Q chips form the connection-specific spreading code c.
  • FIG. 3 shows by arrows that in the time slot tsl one or more resources for a downlink
  • the subscriber station ME 1 receives packet data from the base station NB in the time slot tsl of the time frame fr 1.
  • the subscriber station ME 1 uses the or part of the return channel (uplink shared channel) in the time slot tsl4 of the same time frame for 1 for the subsequent transmission of a confirmation message to the base station NB, for example according to a described ARQ method, can be used exclusively.
  • the same procedure is used in the time frame for 2 carried out. In the time frame for 3, those are in the downlink
  • Shared channel transmitted packet data in the time slot ts 1 is determined for the subscriber station ME 2. Subsequently, the uplink shared channel (USCH) in the time slot ts 14 can be used exclusively for transmitting a confirmation message to the base station NB.
  • USCH uplink shared channel
  • the subscriber station can be explicitly signaled which signaling channel it should use to transmit the confirmation message. This can be done, for example, together with the signaling of the resource for the transmission of the packet data in the downward direction to the subscriber station.

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

Abstract

The invention relates to a method for transmitting signals in a radio communication system, wherein signal transmission takes place in the form of packet data transmission between at least one base station and one subscriber station via a shared transmission channel. The inventive method is characterized in that when a portion of the shared transmission channel is assigned to the transmission of packet data in the down-link direction to the subscriber station, a signaling channel is implicitly or explicitly assigned for transmitting a confirmation message in the up-link direction to the base station.

Description

Beschreibungdescription
Verfahren zur Signalübertragung in einem Funk-KommunikationssystemMethod for signal transmission in a radio communication system
Die Erfindung betrifft ein Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem. Die Erfindung ist insbesondere für einen Einsatz in einem Mobilfunksystem oder drahtlosen Teilnehmeranschlußsystem geeignet.The invention relates to a method for signal transmission in a radio communication system. The invention is particularly suitable for use in a mobile radio system or wireless subscriber line system.
In Funk-Kommunikationssystemen, beispielsweise dem europäischen Mobilfunksystem der zweiten Generation GSM (Global System for Mobile Communications) , werden Informationen (beispielsweise Sprache, Bildinformation oder andere Daten) mit Hilfe von elektromagnetischen Wellen über eine Funkschnittstelle übertragen. Die Funkschnittstelle bezieht sich auf eine Verbindung zwischen einer Basisstation und Teilnehmerstationen, wobei die Teilnehmerstationen Mobilstationen oder ortsfeste Funkstationen sein können. Das Abstrahlen der elek- tromagnetischen Wellen erfolgt dabei mit Trägerfrequenzen, die in einem für das jeweilige System vorgesehenen Frequenzband liegen. Für zukünftige Funk-Kommunikationssysteme, beispielsweise das UMTS (Universal Mobile Telecommunication System) oder andere Systeme der 3. Generation sind Frequenzen im Frequenzband von ca. 2000 MHz vorgesehen. Für die dritte Mobilfunkgeneration sind zwei Modi vorgesehen, wobei ein Modus einen FDD-Betrieb (frequency division duplex) und der andere Modus einen TDD-Betrieb (time division duplex) bezeichnet. Diese Modi finden in unterschiedlichen Frequenzbändern ihre Anwendung. Beide Modi unterstützen ein sogenanntes CDMA- Teilnehmerseparierungsverfahren (Code Division Multiple Access) . Zur Stützung der Beschreibung des Standes der Technik der beiden Modi - FDD (Frequency Division Duplex) und TDD (Time Division Duplex) - des digitalen Mobilfunksystems der dritten Generation UMTS werden folgende Dokumente genannt:In radio communication systems, for example the second generation GSM (Global System for Mobile Communications) European mobile radio system, information (for example voice, image information or other data) is transmitted with the aid of electromagnetic waves via a radio interface. The radio interface relates to a connection between a base station and subscriber stations, it being possible for the subscriber stations to be mobile stations or fixed radio stations. The electromagnetic waves are emitted with carrier frequencies that lie in a frequency band provided for the respective system. For future radio communication systems, for example the UMTS (Universal Mobile Telecommunication System) or other 3rd generation systems, frequencies in the frequency band of approx. 2000 MHz are provided. Two modes are provided for the third mobile radio generation, one mode denoting FDD operation (frequency division duplex) and the other mode denoting TDD operation (time division duplex). These modes are used in different frequency bands. Both modes support a so-called CDMA subscriber separation procedure (Code Division Multiple Access). To support the description of the prior art of the two modes - FDD (Frequency Division Duplex) and TDD (Time Division Duplex) - of the third generation UMTS digital mobile radio system, the following documents are mentioned:
(TDD): TS 25.221 „Physical Channels and mapping of trans- port Channels onto physical Channels (TDD)", VI.1.0, 1999-06, 3GPP, TSG, RAN, WGl, insbesondere Kapitel 5.4,(TDD): TS 25.221 "Physical Channels and mapping of transport Channels onto physical Channels (TDD)", VI.1.0, 1999-06, 3GPP, TSG, RAN, WGl, in particular Chapter 5.4,
(FDD): TS 25.211 „Physical Channels and mapping of trans- port Channels onto physical Channels (FDD)", V2.1.0, 1999-06, 3GPP, TSG, RAN, WGl, insbesondere Kapitel 5.3.3.3, und(FDD): TS 25.211 "Physical Channels and mapping of transport Channels onto physical Channels (FDD)", V2.1.0, 1999-06, 3GPP, TSG, RAN, WGl, in particular Chapter 5.3.3.3, and
(FDD): TS 25.214 „Physical layer procedures (FDD)", VI.1.0, 1999-06, 3GPP, TSG, RAN, WGl, insbesondere Kapitel 4.(FDD): TS 25.214 "Physical layer procedures (FDD)", VI.1.0, 1999-06, 3GPP, TSG, RAN, WGl, in particular Chapter 4.
Zur Beschreibung des Mobilfunksystems der zweiten Generation GSM wird als allgemeiner Stand der Technik das Buch von J. Biala „Mobilfunk und Intelligente Netze", Vieweg Verlag, 1995, zugrunde gelegt.The description of the second generation mobile radio system GSM is based on the general state of the art book by J. Biala "Mobile Radio and Intelligent Networks", Vieweg Verlag, 1995.
Bei der Anwendung von so genannten ARQ-Verfahren (Automatic Repeat Request) wird bei jeder Paketdatenübertragung empfän- gerseitig bestätigt, ob das Paket ordnungsgemäß empfangen wurde oder nicht. Dieses erfolgt beispielsweise mittels der ACK- bzw. NACK-Bestätigungsnachricht . Um diese Bestätigung dem Sender mitzuteilen ist es erforderlich, nach jeder Paketdatenübertragung dem Empfänger einen jeweiligen Rückkanal für die Übertragung der Bestätigungsnachricht zur Verfügung zu stellen.When using so-called ARQ (Automatic Repeat Request) procedures, the receiver confirms with each packet data transmission whether the packet was received correctly or not. This is done, for example, by means of the ACK or NACK confirmation message. In order to notify the sender of this confirmation, it is necessary to provide the recipient with a respective return channel for the transmission of the confirmation message after each packet data transmission.
Aufgabe der Erfindung ist es, ein Verfahren zur schnellen Zuweisung eines Rückkanals bei einem geringen Signalisierungs- aufwand anzugeben. Diese Aufgabe wird durch das Verfahren gemäß den Merkmalen des Patentanspruchs 1 gelöst. Weiterbildungen der Erfindung sind den abhängigen Patentansprüchen entnehmbar.The object of the invention is to provide a method for quickly assigning a return channel with a low signaling to specify expenditure. This object is achieved by the method according to the features of patent claim 1. Further developments of the invention can be found in the dependent claims.
Paketdaten werden gemäß dem Stand der Technik über sogenannte Shared Channels, d.h. von mehreren logischen Verbindungen parallel genutzte physikalische Übertragungskanäle, übertragen. Diese Kanäle werden von mehreren Teilnehmern beispielsweise gemäß einem Zeitmultiplexverfahren belegt. Ein Teilnehmer bekommt somit für eine jeweils begrenzte Zeit diese Resource vom Netzwerk zugeteilt. Bisher wurden zum Beispiel bei dem beschriebenen UMTS TDD-Modus die Shared Channels für die Auf- (UL - Uplink) und Abwärtsstrecke (DL - Downlink) getrennt an- gefordert und allokiert bzw. zugewiesen. Das heißt, dass ein Teilnehmer, dem ein Paketdatenkanal für die Übertragung von Datenpaketen in Abwärtsrichtung zugewiesen wird, nachfolgend selbständig einen Rückkanal für die Übertragung der Bestätigungsnachricht anfordern muss.According to the prior art, packet data are transmitted via so-called shared channels, i.e. physical transmission channels used in parallel by several logical connections. These channels are occupied by several participants, for example in accordance with a time-division multiplex method. A participant thus receives this resource from the network for a limited time. In the UMTS TDD mode described above, for example, the shared channels for the uplink (UL - uplink) and downlink (DL - downlink) have been separately requested and allocated or assigned. This means that a subscriber who is assigned a packet data channel for the transmission of data packets in the downward direction must subsequently independently request a return channel for the transmission of the confirmation message.
Erfindungsgemäß wird bei der Allokierung des Hinkanals (im DL) für die Paketdatenübertragung automatisch implizit oder explizit ein Rückkanal (im UL) zugewiesen. Wenn nun ein Teilnehmer über den Hinkanal (DL) Paketdaten empfängt, kann bei- spielsweise ausschließlich dieser Teilnehmer den darauf folgenden und vorher allokierten Rückkanal für seine Paketdatenbestätigung in Aufwärtsrichtung (UL) benutzen. Wenn die darauffolgenden Daten im Hinkanal für einen anderen Teilnehmer bestimmt sind, benutzt dieser den Rückkanal. Der Vorteil die- ser Methode liegt in der geringen und schnellen Signalisierung des Zugriffes auf den Rückkanal für alle diesen Shared Channel nutzenden Teilnehmer. Durch die Ausgestaltung der Erfindung ist eine flexiblere Zuweisung des Rückkanals möglich. Wenn dem Teilnehmer mitgeteilt wird, dass die Datenpakete im Hinkanal für ihn bestimmt sind, ist es möglich, ihm gleichzeitig eine bestimmte Re- source für den Rückkanal mitzuteilen. Diese Resource kann je nach Systemzustand bei jeder Datenübertragung angepasst werden.According to the invention, a return channel (in the UL) is automatically implicitly or explicitly assigned when the forward channel (in the DL) is allocated for the packet data transmission. If a subscriber now receives packet data via the downlink channel (DL), for example only this subscriber can use the subsequent and previously allocated return channel for his packet data confirmation in the upward direction (UL). If the subsequent data in the downlink channel is intended for another subscriber, the subscriber uses the return channel. The advantage of this method is the low and fast signaling of access to the return channel for all participants using this shared channel. The configuration of the invention enables a more flexible allocation of the return channel. If the subscriber is informed that the data packets in the downlink channel are intended for him, it is possible to inform him of a certain resource for the return channel at the same time. Depending on the system status, this resource can be adapted for each data transfer.
Die Erfindung liegt in der gemeinsamen Zugriffssignalisierung von Hin- und Rückkanälen, die von mehreren Teilnehmern imThe invention resides in the common access signaling of outbound and return channels, which are used by several participants in the
Zeitmultiplexverfahren belegt werden. Diese Technik ist insbesondere für die beschriebenen ARQ-Verfahren vorteilhaft.Time-division multiplexing. This technique is particularly advantageous for the ARQ methods described.
Ausführungsbeispiele der Erfindung werden anhand der beilie- genden Zeichnungen näher erläutert.Exemplary embodiments of the invention are explained in more detail with reference to the accompanying drawings.
Dabei zeigenShow
FIG 1 ein Blockschaltbild eines Funk-Kommunikationssystems,1 shows a block diagram of a radio communication system,
FIG 2 eine schematische Darstellung der Struktur einer TDD- Funkschnittstelle, und2 shows a schematic representation of the structure of a TDD radio interface, and
FIG 3 eine schematische Struktur von Zeitschlitzen für die Signalübertragung innerhalb eines Zeitrahmens einer TDD-Funk- schnittstelle zur Erläuterung des erfindungsgemäßen Verfahrens .3 shows a schematic structure of time slots for signal transmission within a time frame of a TDD radio interface to explain the method according to the invention.
Die FIG 1 zeigt einen Ausschnitt aus einem Mobilfunksystem als Beispiel für ein Funk-Kommunikationssystem. Ein Mobilfunksystem besteht aus einer Vielzahl von Mobilvermittlungsstellen MSC, die zu einem Vermittlungsnetz (SSS - Switching Subsystem) gehören und untereinander vernetzt sind bzw. den Zugang zu einem Festnetz herstellen, und aus jeweils einem oder mehreren mit diesen Mobilvermittlungsstellen MSC verbundenen Basisstationssystemen BSS (Base Station Subsystem) . Ein Basisstationssystem BSS weist wiederum zumindest eine Ein- richtung RNC (RNC - Radio Network Controller) zum Zuweisen von funktechnischen Ressourcen sowie zumindest eine jeweils damit verbundene Basisstation NB (Node B) auf. Eine Basisstation NB kann über eine Funkschnittstelle Verbindungen zu Teilnehmerstationen ME (Mobile Entity) , wie z.B. Mobilsta- tionen oder anderweitige mobile und stationäre Endgerate, aufbauen. Durch jede Basisstation NB wird zumindest eine Funkzelle Z gebildet. Die Große der Funkzelle wird in der Regel durch die Reichweite eines allgemeinen Signalisierungska- nals (BCCH - Broadcast Control Channel) , der von der Basis- Station NB mit einer vorgegebenen Sendeleistung gesendet wird, bestimmt. Bei einer Sektorisierung oder bei hierarchischen Zellstrukturen können pro Basisstation NB auch mehrere Funkzellen versorgt werden. Die Funktionalltat dieser Struktur ist auf andere Funk-Kommunikationssysteme übertragbar, in denen die Erfindung zum Einsatz kommen kann, insbesondere auf Teilnehmerzugangsnetze zum drahtlosen Teilnehmeranschluß.1 shows a section of a mobile radio system as an example of a radio communication system. A mobile radio system consists of a multiplicity of mobile switching centers MSC which belong to a switching network (SSS - Switching Subsystem) and are networked with one another or the Establish access to a fixed network, and each from one or more base station systems BSS (base station subsystem) connected to these mobile switching centers MSC. A base station system BSS in turn has at least one device RNC (RNC - Radio Network Controller) for assigning radio resources and at least one base station NB (node B) connected to it. A base station NB can set up connections to subscriber stations ME (Mobile Entity), such as mobile stations or other mobile and stationary terminals, via a radio interface. At least one radio cell Z is formed by each base station NB. The size of the radio cell is generally determined by the range of a general signaling channel (BCCH - Broadcast Control Channel), which is transmitted by the base station NB with a predetermined transmission power. In the case of sectorization or hierarchical cell structures, several radio cells can also be supplied per base station NB. The functionality of this structure can be transferred to other radio communication systems in which the invention can be used, in particular to subscriber access networks for wireless subscriber connection.
Die Rahmenstruktur der Funkubertragung im TDD-Modus eines UMTS-Mobilfunksystems ist aus der FIG 2 ersichtlich. Gemäß einer TDMA-Komponente (time division multiple access) ist eine Aufteilung eines breitbandigen Frequenzbereiches in mehrere Zeitschlitze ts gleicher Zeitdauer, beispielsweise 15 Zeitschlitze tsO bis tsl4 vorgesehen, die einen Zeitrahmen fr bilden. Ein Frequenzband B erstreckt sich über einen bestimm- ten Frequenzbereich. Ein Teil der Zeitschlitze wird für die Signalubertragung in Abwartsrichtung DL und ein Teil der Zeitschlitze in Aufwartsrichtung UL genutzt. Beispielhaft ist ein Asymmetrieverhaltnis von 3:1 zugunsten der Abwartsrich- tung DL gezeigt. Bei diesem TDD-Übertragungsverfahren entspricht das Frequenzband B für die Aufwärtsrichtung UL dem Frequenzband B für die • Abwärtsrichtung DL. Gleiches wiederholt sich für weitere Trägerfrequenzen. Durch die variable Zuordnung der Zeitschlitze ts für Auf- oder Abwärtsrichtung. UL, DL können vielfältige asymmetrische Resourcenzuteilungen vorgenommen werden.The frame structure of the radio transmission in the TDD mode of a UMTS mobile radio system can be seen from FIG. 2. According to a TDMA component (time division multiple access), a division of a broadband frequency range into several time slots ts of the same duration, for example 15 time slots ts0 to tsl4, is provided, which form a time frame fr. A frequency band B extends over a certain frequency range. Some of the time slots are used for signal transmission in the downward direction DL and some of the time slots in the upward direction UL. An example is an asymmetry ratio of 3: 1 in favor of the downward tung DL shown. In this TDD transmission method, the frequency band B for the upward direction UL corresponds to the frequency band B for the downward direction DL. The same is repeated for other carrier frequencies. Through the variable assignment of the time slots ts for upward or downward direction. UL, DL, various asymmetrical resource allocations can be made.
Innerhalb der Zeitschlitze werden Informationen mehrerer Ver- bindungen in Funkblöcken übertragen. Die Daten d sind verbindungsindividuell mit einer Feinstruktur, einem Spreizkode c, gespreizt, so daß empfangsseitig beispielsweise n Verbindungen durch diese CDMA-Komponente (code division multiple access) separierbar sind. Die Spreizung von einzelnen Symbolen der Daten d bewirkt, daß innerhalb der Symboldauer TSym QInformation from several connections is transmitted in radio blocks within the time slots. The data d are spread individually for each connection with a fine structure, a spread code c, so that, for example, n connections can be separated at the receiving end by this CDMA component (code division multiple access). The spreading of individual symbols of the data d causes that within the symbol duration T Sym Q
Chips der Dauer Tc ip übertragen werden. Die Q Chips bilden dabei den verbindungsindividuellen Spreizkode c.Chips of the duration T c i p are transmitted. The Q chips form the connection-specific spreading code c.
Die FIG 3 zeigt durch Pfeile angedeutet, dass in dem Zeit- schlitz tsl eine oder mehrere Resourcen für einen DownlinkFIG. 3 shows by arrows that in the time slot tsl one or more resources for a downlink
Shared Channel und in dem Zeitschlitz tsl4 eine oder mehrere Resourcen für den Uplink Shared Channel von der Basisstation NB zugewiesen sind. In dem Zeitschlitz tsl des Zeitrahmens fr 1 empfängt die Teilnehmerstation ME 1 Paketdaten von der Ba- sisstation NB. Durch die Zuweisung der Resource für die Abwärtsrichtung DL ist der Teilnehmerstation ME 1 implizit bekannt, dass sie den oder einen Teil des Rückkanals (Uplink Shared Channel) in dem Zeitschlitz tsl4 des gleichen Zeitrahmens fr 1 für die anschließende Übertragung einer Bestäti- gungsnachricht zu der Basisstation NB, beispielsweise entsprechend einem beschriebenen ARQ-Verfahren, exklusiv nutzen kann. Das gleiche Verfahren wird in dem Zeitrahmen fr 2 durchgeführt. In dem Zeitrahmen fr 3 sind die in dem DownlinkShared channel and in the time slot tsl4 one or more resources for the uplink shared channel are assigned by the base station NB. The subscriber station ME 1 receives packet data from the base station NB in the time slot tsl of the time frame fr 1. By assigning the resource for the downlink DL, the subscriber station ME 1 is implicitly aware that it uses the or part of the return channel (uplink shared channel) in the time slot tsl4 of the same time frame for 1 for the subsequent transmission of a confirmation message to the base station NB, for example according to a described ARQ method, can be used exclusively. The same procedure is used in the time frame for 2 carried out. In the time frame for 3, those are in the downlink
Shared Channel übertragenen Paketdaten in dem Zeitschlitz ts 1 für die -Teilnehmerstation ME 2 bestimmt. Nachfolgend kann diese den Uplink Shared Channel (USCH) in dem Zeitschlitz ts 14 zur Übertragung einer Bestätigungsnachricht zu der Basisstation NB exklusiv nutzen.Shared channel transmitted packet data in the time slot ts 1 is determined for the subscriber station ME 2. Subsequently, the uplink shared channel (USCH) in the time slot ts 14 can be used exclusively for transmitting a confirmation message to the base station NB.
Alternativ hierzu kann der Teilnehmerstation explizit signalisiert werden, welchen Signalisierungskanal sie zur Übertra- gung der Bestätigungsnachricht nutzen soll. Dieses kann beispielsweise gemeinsam mit der Signalisierung der Resource für die Übertragung der Paketdaten in Abwärtsrichtung zu der Teilnehmerstation erfolgen. As an alternative to this, the subscriber station can be explicitly signaled which signaling channel it should use to transmit the confirmation message. This can be done, for example, together with the signaling of the resource for the transmission of the packet data in the downward direction to the subscriber station.

Claims

Patentansprüche claims
1. Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem, wobei die Signalübertragung in Form einer Paketda- tenübertragung zwischen zumindest einer Basisstation (NB) und einer Teilnehmerstation (ME) über einen gemeinsam genutzten Übertragungskanal (Shared Channel) erfolgt, bei dem bei einer Zuweisung eines Anteils an dem gemeinsam genutzten Übertragungskanal zur Übertragung von Paketdaten in Abwärts- richtung (DL) zu der Teilnehmerstation (UE) implizit oder explizit ein Signalisierungskanal zur Übertragung einer Bestätigungsnachricht in Aufwärtsrichtung (UL) zu der Basisstation (NB) zugewiesen wird.1. A method for signal transmission in a radio communication system, the signal transmission in the form of a packet data transmission between at least one base station (NB) and one subscriber station (ME) via a shared transmission channel (shared channel), in which an As part of the shared transmission channel for transmitting packet data in the downward direction (DL) to the subscriber station (UE), a signaling channel for transmitting an acknowledgment message in the upward direction (UL) to the base station (NB) is implicitly or explicitly assigned.
2. Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem, wobei die Signalübertragung in Form einer Paketdatenübertragung zwischen zumindest einer Basisstation (NB) und einer Teilnehmerstation (UE) über einen gemeinsam genutzten Übertragungskanal (Shared Channel) erfolgt, bei dem bei einer Zuweisung eines Anteils an dem gemeinsam genutzten Übertragungskanal zur Übertragung von Paketdaten in Aufwärtsrichtung (UL) zu der Basisstation (NB) implizit oder explizit ein Signalisierungskanal zur Übertragung einer Bestätigungsnachricht in Abwärtsrichtung (DL), zu der Teilnehmerstation (ME) zugewiesen wird.2. Method for signal transmission in a radio communication system, the signal transmission in the form of a packet data transmission between at least one base station (NB) and one subscriber station (UE) via a shared transmission channel (shared channel), in which a share is assigned to the shared transmission channel for the transmission of packet data in the uplink direction (UL) to the base station (NB) implicitly or explicitly a signaling channel for the transmission of a confirmation message in the downlink direction (DL) to the subscriber station (ME) is assigned.
3. Verfahren nach Anspruch 1 oder 2, bei dem der Signalisierungskanal ebenfalls ein Teil eines gemeinsam genutzten Übertragungskanals (Shared Channel) ist. 3. The method of claim 1 or 2, wherein the signaling channel is also part of a shared transmission channel (shared channel).
PCT/DE2002/000106 2001-01-17 2002-01-16 Method for transmitting signals in a radio communication system WO2002058423A1 (en)

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DE10101954A DE10101954A1 (en) 2001-01-17 2001-01-17 Signal transmission in radio communications system involves using common channel for down link transmissions to user station and up link transmissions to base station

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377192A (en) * 1990-11-13 1994-12-27 Cognito Limited Radio data communication system having means for reducing collisions between contending remote stations
EP0681406A1 (en) * 1994-05-03 1995-11-08 Nokia Mobile Phones Ltd. System for transmitting packet data in digital cellular time division multiple access (TDMA) air interface
WO2001091319A2 (en) * 2000-05-19 2001-11-29 Tantivy Communications, Inc. Automatic reverse channel assignment in a two-way tdm communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377192A (en) * 1990-11-13 1994-12-27 Cognito Limited Radio data communication system having means for reducing collisions between contending remote stations
EP0681406A1 (en) * 1994-05-03 1995-11-08 Nokia Mobile Phones Ltd. System for transmitting packet data in digital cellular time division multiple access (TDMA) air interface
WO2001091319A2 (en) * 2000-05-19 2001-11-29 Tantivy Communications, Inc. Automatic reverse channel assignment in a two-way tdm communication system

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