EP1540984A2 - Procede de radiotransmission de donnees, station d'abonne et station de base - Google Patents

Procede de radiotransmission de donnees, station d'abonne et station de base

Info

Publication number
EP1540984A2
EP1540984A2 EP03797165A EP03797165A EP1540984A2 EP 1540984 A2 EP1540984 A2 EP 1540984A2 EP 03797165 A EP03797165 A EP 03797165A EP 03797165 A EP03797165 A EP 03797165A EP 1540984 A2 EP1540984 A2 EP 1540984A2
Authority
EP
European Patent Office
Prior art keywords
reception quality
base station
value
quality value
subscriber stations
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Withdrawn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
EP03797165A
Other languages
German (de)
English (en)
Inventor
Siegfried Bär
Hyung-Nam Choi
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP1540984A2 publication Critical patent/EP1540984A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/20—TPC being performed according to specific parameters using error rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure

Definitions

  • Radio data transmission method subscriber station and base station
  • the invention relates to a method for radio data transmission, a subscriber station, in particular a mobile station or a mobile phone, and a base station.
  • a better option here is multicast transmission or a corresponding multicast service.
  • the various subscribers to whom the same message is to be transmitted are combined to form a group (multicast group) to which an address (multicast address) is assigned (point-to-multipoint transmission).
  • the data to be transmitted are then only sent to this multicast address once.
  • the multicast message is only sent once over common connection paths from the sender to the receivers.
  • the data transmission from the generally fixed base station to the subscriber stations or mobile stations is referred to as transmission in the downlink direction DL (downlink), and data transmission in the opposite direction from a terminal to the base station is referred to as transmission in the uplink direction UL (Upward stretch).
  • UMTS With UMTS, two modes are provided for the transmission via the air interface: With the FDD mode, the transmission in uplink and downlink takes place at different frequencies, with the TDD mode only one carrier frequency is used. The uplink and downlink direction are separated by assigning time slots. In both modes, the participants are separated by applying orthogonal codes (channelization codes) to the information data. This multiple access method is known as the CDMA method.
  • V5.1.0 Physical channels- and apping of transport channels onto physical channels, 3GPP-TSG-RAN, 2002-06 and TS 25.212 V5.1.0: Multiple-xing and channel coding, 3GPP-TSG-RAN, 2002-06) of the UMTS-FDD mode is a physical channel, ie a radio channel, defined in the downlink direction by carrier frequency, scrambling code, channelization code and a start and stop time.
  • the scrambling codes are used to scramble the already spread data. This should, among other things the interference (interference) in neighboring cells is minimized.
  • Radio channels Types of radio channels: dedicated channels (Dedicated Channels) and common channels (Co mon Channels).
  • dedicated channels a physical resource is reserved only for the transmission of information for a specific subscriber device (user equipment).
  • common channels NEN information that is intended for all participants (eg the broadcast channel BCH) or only for a specific participant. In the latter case, it must also be transmitted on the common channel for which subscriber the information is intended.
  • SIR-based (signal-to-interference ratio) power control with closed control loop which is briefly outlined below (see also TS 25.214 V5.1.0: Physical layer procedures, 3GPP-TSG-RAN,
  • the mobile device makes an estimate of the SIR for the dedicated channels it receives. This value represents a quality value for the received signal.
  • a TPC command Transmit Power Control
  • SIR target is specified individually by the network for each mobile station in such a way that sufficient quality is guaranteed for the respective connection.
  • the TPC commands are pure 1-bit information and merely provide the information represents whether the measured SIR is below or above the predetermined value SIR ta rget.
  • the TPC commands (rget SIR SIR below ta) also with the commands "UP” and “DOWN” (SIR SIR over half ta rg et) are equated.
  • the command "UP” means that the reception quality is not sufficient and therefore an increase in the transmission power is necessary at the transmitter.
  • the reverse applies to the "DOWN" command.
  • Group or multicast messages can be sent efficiently via existing common channels or via a future special multicast channel from the base stations (NodeBs) arranged in the radio cells to the subscriber stations (mobile radio stations or mobile stations in GSM, user equipment UEs) in UMTS; appended "s" is used for plural formation det) of the multicast group.
  • NodeBs base stations
  • subscriber stations mobile radio stations or mobile stations in GSM, user equipment UEs
  • UMTS user equipment UEs
  • appended "s" is used for plural formation det
  • an associated uplink channel is required per subscriber station, which uses TPC bits (power transmission bits) to inform the base station that the transmit power for the respective subscriber station is too high or too is low.
  • TPC bits power transmission bits
  • the uplink channel that transmits the TPC bits is also expediently power-controlled so that the interference from the UL transmission by multiple subscriber stations is kept as low as possible in the cell. As is known, this control is in turn carried out by a dedicated DL channel associated with the UL channel. In UMTS, each subscriber station is assigned an associated DL channel.
  • the current power control based on the TPC bits is based on either-or decisions. As a result, the actual properties of the mobile radio channel are not taken into account, and there is a risk that one (or a few) subscriber stations dominate the entire power control.
  • the data are sent from a base station to a group of subscriber stations via at least one common or the same physical channel.
  • the common physical channel can be defined in particular by time and / or frequency and or code, in particular spreading code (channelization code) and / or scrambling code.
  • the transmission power of a base station which sends data to a group of subscriber stations is set with little effort, taking into account the following goals:
  • the base station in the transmission of reception quality values, there is the advantage that the base station can make qualitative decisions in terms of power regulation, in order to enable faster and more efficient regulation.
  • 1 shows a mobile radio cell with several mobile radio stations
  • Fig. 3 is a block diagram of a mobile station or a base station.
  • the radio cell FZ schematically illustrated in Figure 1 has a base station BS representing the transmitter in the Funksyst 'em.
  • a control device BSC can be assigned to this base station BS, which, for example, also regulates the transmission to further radio cells.
  • several receivers in the form of subscriber stations, also referred to below as mobile stations, are present within the radio cell FZ, MSI to MS6.
  • the receivers MSI to MS6 are randomly distributed over the area of the radio cell FZ, so that the receivers MSI to MS6 can have different distances from the base station BS.
  • the data is transmitted in the UMTS radio system in time slots, which in turn are embedded in a fixed frame structure.
  • the frames each last 10 milliseconds and contain 15 time slots over which the data transmitted over a physical channel are distributed.
  • a so-called burst is transmitted in each of these time slots, which represents a sequence of bits that can be divided into different data fields.
  • the data to be transmitted, in particular multicast messages are processed in accordance with a layer model mapped onto a physical channel (physical multicast channel PMcCh), which is transmitted via the air interface from the transmitter BS to a group of subscriber stations MS2, MS4, MS5 with a transmission power.
  • PMcCh physical multicast channel
  • the aim of setting the transmission power of the base station BS is that all mobile stations MS2, MS4, MS5 of the group to which the multicast message is directed receive the multicast message with at least a certain minimum reception quality.
  • the subscriber stations MSI to MS6 are equipped so that they can determine a reception quality value depending on the reception quality of received multicast messages and the current reception quality value at regular intervals via an uplink channel, for example a dedicated channel (UL-DPCCH) , can send a physical random access channel (PRACH Physical Random Access Channel) or via a special multicast uplink signaling channel to the base station BS.
  • an uplink channel for example a dedicated channel (UL-DPCCH)
  • PRACH Physical Random Access Channel Physical Random Access Channel
  • PRACH Physical Random Access Channel special multicast uplink signaling channel
  • the receivers MS2, MS4, MS5 form a reception group for multicast messages which are sent out by the transmitter BS.
  • the base station determines a transmission power value and sends further data to the group with the transmission power value determined.
  • a group of mobile stations MS2, MS4, MS5 receives the same multicast channel (step 1) and is therefore involved in the corresponding power control.
  • the mobile stations MS2, MS4 and MS5 each determine the signal for interference as the reception quality value SIR ratio of the multicast channel, hereinafter referred to as SIR2, SIR4 and SIR5 (step 2).
  • the received quality value can also be determined by the bit error rate or the block error rate of the received data, in particular the received multicast data.
  • These reception quality values are sent to the base station BS at regular intervals via the dedicated uplink channel, the PRACH or a special multicast uplink signaling channel (step 3).
  • the arrival of the SIR values SIR2, SIR4 and SIR5 determined and transmitted by the various mobile stations MS2, MS4, MS5 at the base station can be scattered within the power control period PCP;
  • a comparison of the SIR values with an optimal reception value interval (step 5), here an optimal SIR value interval, can take place, for example, at the end of the power regulation period or after the arrival of the last SIR value.
  • step 5 The comparison of the SIR values with an optimal reception value interval (step 5) or the evaluation of the individual received SIR values is carried out according to the following three steps.
  • a required reception quality value in particular SIR value
  • SIR opt a reception quality value interval is determined by two further values SIR min and SIR max such that:
  • a first step the values that are greater than SIR max are deleted from the received SIR values SIR2, SIR4, SIR5 (step 5.1), since in these cases it can be assumed with a high degree of certainty that the actual reception quality is sufficient is. If after this step no further SIR values for evaluating its left, then the base station decreases the transmission power by a certain amount, for example, a value that -niedrigstem on the difference between received from the base station SIR value and SIRopt or SIR m a ⁇ depends or is formed from this difference.
  • the received SIR values SIR2, SIR4, SIR5 evaluate the SIR values which are smaller than SIR m in (step 5.2).
  • the reception is usually so poor that the multicast service threatens to fail due to high transmission errors. Therefore, the transmission power is increased in this case.
  • the transmission power is increased by a value which depends on the difference between the lowest received SIR value and SIR min or SIR op t or is formed by this difference.
  • a third step the remaining SIR values, which are in a range between SIR min and SIR max, are evaluated (step 5.3).
  • an average value SIR g iobai is formed from these values:
  • the C are weighting factors that allow differentiated averaging. In the simplest case, all c ⁇ i-dentic 1, or the c k are dependent on the SIR values.
  • the reception quality values are not transmitted from the mobile stations to the base station even once per power regulation period, but at intervals controlled by the mobile station itself.
  • the base station At the end of a power regulation period, the base station only takes into account the reception quality values received within the power regulation period for comparison with the reception quality value interval. For example, the mobile station only sends the determined reception quality value to the base station if the determined reception quality value fulfills a certain criterion. This criterion can be over or under ten of a predetermined threshold value through the determined reception quality value.
  • the ascertained reception quality value SIR is only sent to the base station if the ascertained reception quality value SIR is less than c * SIR op .
  • the factor c can be used to determine a margin for the power control, which influences the number of uplink transmissions.
  • FIG. 3 shows a base station BS or a mobile station MS, in particular a mobile telephone, which contains a high-frequency device HF and a processor device PE.
  • a program-controlled processor device PE such as a microcontroller, which can also include a processor CPU and a memory device SPE.
  • the radio frequency direction HF will be controlled by the processor device PE.
  • the program data such as, for example, the control commands or control procedures which are used to control the mobile station or base station, are stored in the storage device -SPE.
  • the different components of the processor device can exchange data with one another or with other components of the mobile station or base station via a bus system BUS or input / output interfaces and, if appropriate, suitable controllers. It is sufficiently known to a person skilled in the art to control a mobile station or base station and to implement it certain functions and applications of the mobile station or base station, these and other components of one
  • the processor device is set up to control the power regulation in the context of a transmission of data to groups of subscribers; in particular, the processor device is management of essential of the above process steps set up.

Landscapes

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

Abstract

L'invention concerne un procédé selon lequel des données sont envoyées d'une station de base à un groupe de stations d'abonnés. Les stations d'abonnés déterminent chacune une valeur de qualité de réception et l'envoient à la station de base. La station de base ou un dispositif de contrôle affecté à la station de base compare les valeurs de qualité de réception avec un intervalle optimal de valeur de qualité de réception. Une valeur de puissance d'émission est calculée en fonction des résultats de la comparaison et d'autres données sont envoyées par la station de base au groupe de stations d'abonnés sur la base de cette valeur de puissance d'émission déterminée.
EP03797165A 2002-09-17 2003-08-07 Procede de radiotransmission de donnees, station d'abonne et station de base Withdrawn EP1540984A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002143149 DE10243149A1 (de) 2002-09-17 2002-09-17 Verfahren zur Funkdatenübertragung, Teilnehmerstation und Basisstation
DE10243149 2002-09-17
PCT/DE2003/002657 WO2004028188A2 (fr) 2002-09-17 2003-08-07 Procede de radiotransmission de donnees, station d'abonne et station de base

Publications (1)

Publication Number Publication Date
EP1540984A2 true EP1540984A2 (fr) 2005-06-15

Family

ID=31724826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03797165A Withdrawn EP1540984A2 (fr) 2002-09-17 2003-08-07 Procede de radiotransmission de donnees, station d'abonne et station de base

Country Status (3)

Country Link
EP (1) EP1540984A2 (fr)
DE (1) DE10243149A1 (fr)
WO (1) WO2004028188A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150271764A1 (en) * 2014-03-21 2015-09-24 Qualcomm Incorporated Positioning measurement management

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1143635A1 (fr) * 2000-04-06 2001-10-10 NTT DoCoMo, Inc. Procédé de régulation de la puissance de transmission d'un signal multidestinataire et station de base utilisant ledit procédé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI114060B (fi) * 1998-04-03 2004-07-30 Nokia Corp Menetelmä ja laitteet tehon säätöön matkaviestinjärjestelmässä
BR0013603A (pt) * 1999-09-17 2002-04-30 Motorola Inc Método e aparelho de controle de potência de transmissão
US20020094833A1 (en) * 2001-01-12 2002-07-18 Telefonaktiebolaget Lm Ericsson (Publ). Downlink power control of a common transport channel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1143635A1 (fr) * 2000-04-06 2001-10-10 NTT DoCoMo, Inc. Procédé de régulation de la puissance de transmission d'un signal multidestinataire et station de base utilisant ledit procédé

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004028188A3 *

Also Published As

Publication number Publication date
WO2004028188A3 (fr) 2004-07-01
WO2004028188A2 (fr) 2004-04-01
DE10243149A1 (de) 2004-03-18

Similar Documents

Publication Publication Date Title
DE69913232T2 (de) Verfahren und System zur Sendeleistungsregelung während Makrodiversität
DE60319206T2 (de) Verfahren und Vorrichtung zur Kontrolle des Zugriffs auf "multimedia broadcast multicast service" in einem Paketdatenkommunikationssystem
DE69631386T2 (de) Medienzugriffsverfahren für datenübertragung in drahtlosen cdma-systemen
DE10248988A1 (de) Vorrichtung und Verfahren zum Steuern von Sendeleistung eines Abwärtsverbindungsdatenkanals in einem mobilen Kommunikationssystem, welches MBMS unterstützt
DE20306731U1 (de) Zur Unterstützung von Punkt-zu-Multipunkt-Diensten unter Verwendung von geteilten Kanälen fähiger Node B
DE20311911U1 (de) Basisstation mit Leistungssteuerung eines Punkt-Zu-Mehrpunkt physikalischen Kanals
EP1079542B1 (fr) Contrôle de la puissance d'émission dans un système de communication mobile
DE10154428B4 (de) Verfahren, Vorrichtungen und Softwareprogramme zur Anpassung der Uplinksignalisierung beim Multicasting
WO2004100393A2 (fr) Procede pour commander la puissance d'emission d'une station emettrice d'un systeme de radiocommunication, station emettrice, station receptrice et systeme de radiocommunication
DE60132564T2 (de) Sendeleistungsregelung für die Abwärtsrichtung
EP0983642A2 (fr) Procede et dispositif de regulation de la puissance d'emission pour des liaisons entre une station de base et des stations mobiles d'un systeme de radiocommunication
EP1415411B1 (fr) Procede, dispositifs et produit-programme informatique pour adapter la signalisation dans la liaison montante lors de la multi-diffusion
WO2003005603A1 (fr) Procede de reglage de la puissance d'emission pour la transmission d'informations a plusieurs destinataires dans un systeme radio
EP1540984A2 (fr) Procede de radiotransmission de donnees, station d'abonne et station de base
DE10149549A1 (de) Verfahren zur Steuerung der Sendeleistung mindestens einer Sendestation eines Funkkommunikationssystems, zugehöriges Teilnehmergerät sowie Sendestation
EP1512232B1 (fr) Procede et systeme de regulation de la puissance de sortie de messages de groupes de differents groupes
DE19858725A1 (de) Verfahren zur Signalübertragung in einem Kanal zum willkürlichen Zugriff eines Funk-Kommunikationssystems
DE10338485A1 (de) Verfahren zum Betrieb einer Basisstation, Basisstation und Computerprogramm
EP1523861B1 (fr) Procede, appareil de radiocommunication et unite de commande reseau destines a la transmission d'un message de groupe
WO2005062648A1 (fr) Procede permettant de faire fonctionner une station de radiodiffusion et un poste d'abonne d'un systeme de radiocommunication, et station de radiodiffusion et poste d'abonne correspondants
DE10254182A1 (de) Verfahren zur Sendeleistungssteuerung einer ersten Station in einem Kommunikationssystem durch eine zweite Station sowie erste und zweite Station und Kommunikationssystem
DE10236628A1 (de) Verfahren zur Regelung der Sendeleistung eines Signals sowie sendende Station, empfangende Station und Funksystem
WO2004109951A1 (fr) Procede de commande de lignes d'emission d'au moins deux canaux transmettant simultanement a partir d'une station emettrice et station emettrice
DE10245679A1 (de) Verfahren zur Funkdatenübertragung, Mobilstation und Basisstation
EP1090516B1 (fr) Procede de regulation de la grandeur d'une cellule radio, et station de base

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041220

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20070608

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS S.P.A.

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080311