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WO2003017539A1 - Procede permettant de faire fonctionner un systeme radio, systeme radio y relatif ainsi qu'emetteur et recepteur y relatifs - Google Patents

Procede permettant de faire fonctionner un systeme radio, systeme radio y relatif ainsi qu'emetteur et recepteur y relatifs Download PDF

Info

Publication number
WO2003017539A1
WO2003017539A1 PCT/DE2002/002351 DE0202351W WO03017539A1 WO 2003017539 A1 WO2003017539 A1 WO 2003017539A1 DE 0202351 W DE0202351 W DE 0202351W WO 03017539 A1 WO03017539 A1 WO 03017539A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio system
control message
subscriber
data
transmitted
Prior art date
Application number
PCT/DE2002/002351
Other languages
German (de)
English (en)
Inventor
Siegfried Bär
Hyung-Nam Choi
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2003017539A1 publication Critical patent/WO2003017539A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication

Definitions

  • the present invention relates to a method for operating a radio system, in particular a mobile radio system, and a correspondingly designed radio system and correspondingly designed transmitter and receiver.
  • the present invention is based on the object of proposing a method for operating a radio system, in particular a mobile radio system, by means of which the data transmissions which occur in the course of carrying out measurements can be carried out as effectively as possible with a high possible information content at the same time. Furthermore, the present invention is intended to provide a correspondingly designed radio system with a correspondingly designed transmitter and receiver. This object is achieved according to the invention by a method having the features of claim 1 or a radio system having the features of claim 25 and a transmitter according to claim 27 or a receiver according to claim 29.
  • the subclaims each define preferred and advantageous embodiments of the present invention.
  • the control message and / or the report message in a specific one of several possible formats.
  • the different formats can relate in particular to the length of the messages. In this way, in the cases in which the fastest possible transmission of the messages is advantageous, the messages can be transmitted in a short format and thus faster.
  • the different formats can also relate to the information content of the messages, so that it depends on the purpose of the measurement to be carried out by the second participant a specific format is selected in which, in addition to the information required for this measurement, there is little or no further information in the messages.
  • the control message or the report message is composed of so-called information elements, the meaning of which, however, must be known to the participants in the radio system.
  • the format information can be transmitted separately from the control message or the report message, but can also be part of the control message or the report message. If the messages contain indicators as information elements, the information element indicating the format or the corresponding indicator within the messages is advantageously always in the same place, so that the format information can be evaluated by any subscriber of the radio system even without knowledge of the format ,
  • a separate list for evaluating the indicators in the control message or the report message can be present for each format. Depending on the format information, the corresponding list is then used to evaluate the indicators.
  • the transfer type can be set so that the data is always transferred at the highest possible data transfer rate.
  • the modulation and / or the coding of the transmitted signal can be changed and a high modulation and / or a high coding can be used to achieve a high data transmission rate.
  • high modulation has the disadvantage of being more susceptible to disruptions in data transmission, so that they can only be used if the transmission conditions are good. In order to always be able to achieve the highest possible data transmission rate, it is therefore advantageous if the information about the transmission conditions or about the disturbances in the data transmission is available as quickly as possible.
  • a format for the control and report message can be selected in which the control message or report message contains only a small number of information contents, so that the corresponding messages can be transmitted in a short time.
  • it is packet data that are transmitted at a high transmission rate.
  • the radio system is based on a tent slot structure, all data are transmitted divided into time slots, it being possible for a plurality of time slots to be combined into one frame.
  • the transmission of a control message or report message is delayed by a multiple of the time slot duration as soon as the control message or report message is too long to be transmitted in a time slot.
  • a maximum limit can be provided for the length of the control message or report message in a certain format, which in any case permits the transmission of the control message or report message in one time slot.
  • the measurements in particular for determining the transmission conditions, can, for example, measure the received signal strength, the signal-to-interference ratio, the Signal-to-noise ratio or other measurement methods offered by the radio system.
  • the UMTS standard for radio systems already defines a number of measurement methods relating to radio transmission, in particular for determining the transmission quality, all of which can also be used in the context of the present invention.
  • digital modulation methods are used in particular, which can be, for example, quadrature phase modulation, 8-phase modulation, 16-quadrature amplitude modulation or 64-quadrature amplitude modulation.
  • quadrature phase modulation 8-phase modulation
  • 16-quadrature amplitude modulation 16-quadrature amplitude modulation
  • 64-quadrature amplitude modulation 64-quadrature amplitude modulation.
  • code rates which can be 1/4, 1/2 or 3/4, for example.
  • different types of modulation and coding can be combined differently.
  • the present invention is preferably suitable for use in a mobile radio system, in particular in a UMTS mobile radio system.
  • the present invention is not limited to the described field of application, but can advantageously be used in any radio system in which measurements are carried out, to which control information and / or report information must be transmitted. Both the transmitter side and the receiver side are affected by the present invention.
  • FIG. 1 shows a simplified illustration of a mobile radio cell of a mobile radio system operated according to the invention
  • FIG. 2 shows the data transmission from a first subscriber to a second subscriber of the mobile radio system
  • FIG. 3 shows the data transmission from the second subscriber to the first subscriber of the mobile radio system
  • Figure 4 shows the schematic structure of the information transmitted in the fiction, modern radio system ⁇ data.
  • Data transmission can be changed in order to achieve the highest possible data transmission.
  • measurements are carried out with regard to the disturbances occurring during data transmission, the measurements being triggered by control messages and the results of the measurements being transmitted in the form of report messages.
  • the application of the invention is not limited to measurements relating to the transmission quality in the radio system, but can also be applied to other measurements.
  • the results of the measurements do not have to be used to influence the type of data transmission in order to achieve the highest possible data transmission rate.
  • the radio system described has a cell-like structure, a cell Z being shown schematically in FIG.
  • a base station BS which corresponds to the network side of the radio system.
  • the base station BS corresponds to the first subscriber mentioned in the claims.
  • the radio system also offers services in which significantly higher amounts of data are transmitted in the downlink direction, for example for the transmission of a radio or television program. In the present example, such data are transmitted in the form of packet data PD.
  • the data is modulated and encoded, both different code rates and different modulations being used.
  • the code rates 1/4, 1/2 and 3/4 as well as the modulations 4, 8, 16, 64 are used.
  • Phase modulation and quadrature amplitude modulation are used as the modulation method.
  • both high code rates and high modulation are used in the radio system, in which case the susceptibility to interference is increased.
  • the interference in the data transmission is measured by the mobile stations MS and transmitted back to the base station BS, which adapts the coding and modulation so that the highest possible data transmission rate is always achieved. As shown in FIG.
  • the measurement results are sent back to the base station BS within a report message BN by the mobile stations MS.
  • At least two different formats are provided in the radio system for the control messages SN and the report messages BN.
  • De basic structure of a control message and a report message SN BN is as follows, wherein for the JE information element specified in addition whether it is zwin ⁇ quietly required or optional.
  • Measurement control mandatory Measurement report mode optional
  • the abbreviation RRC stands for radio resource control and the abbreviation DPCH for special physical channel.
  • Both in the control message SN as Judges in the Berichtnach- BN field is measurement mode in which the format ⁇ information is transmitted.
  • the format ⁇ information is transmitted.
  • only two formats are provided, one of which USAGE in the transmission of packet data with a high transmission rate ⁇ is det. Since only two formats can be distinguished, 1 bit is sufficient for this information element.
  • control message SN for packet data transmission with a high data transmission rate is specified below.
  • the number of data bits is also specified for each information element.
  • the format of the report message BN is now given below for the case of packet data transmission with a high data transmission rate, the number of bits for each information element likewise being specified.
  • Both the control message SN and the report message BN each have a total of 17 bits.
  • the data transmission in the radio system is a structure of the frame 1 based on the un in each 15 time slots 2 are tert ⁇ approaches. The structure of such a frame 1 and of a time slot 2 extracted therefrom is shown in FIG. A frame 1 lasts for 10 milliseconds.
  • Data in different data fields are transmitted within a time slot 2.
  • a data field 3 is provided in the time slot 2 shown, in which the control message SN or the report message BN is transmitted.
  • the length of this data field 3 is dimensioned such that a maximum of 17 bits can be transmitted in a time frame 1.
  • the control message SN or the report message BN according to the format selected for the packet data transmission can therefore be transmitted in time slots 2 within a time frame.
  • the second format for the control message SN and the report message BN is used for all other data transmissions in which such a high data transmission rate is not required.
  • the control message SN and the report message BN contain further information elements and can have a total of up to 136 bits.
  • the result of this is that the measurement results are only available to the base station BS after several 10 milliseconds and the base station BS can accordingly react more slowly to changes in the transmission quality.

Landscapes

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

Abstract

Conformément à l'invention, un premier abonné (BS) envoie, dans un système radio, un message de contrôle (SN) à un second abonné (MS) qui, à la suite de cela, effectue des mesures, en particulier de qualité de transfert, et renvoie les résultats des mesures, dans un message d'information (BN) à l'expéditeur (BS). Plusieurs formats sont prévus pour le transfert du message de contrôle (SN) ainsi que pour le transfert du message de rapport (BN), les formats respectifs utilisés étant transférés dans une information de format dans le système radio. Les messages de contrôle (SN) ou les messages de rapport (BN) de différents formats présentent notamment des longueurs différentes, la longueur d'au moins un format étant suffisamment faible pour le format à transférer dans un intervalle de temps unique (1), dans un système radio ayant une structure à intervalle de temps. Le premier abonné (BS) peut modifier le type de transfert de données, en particulier la modulation et la codification, conformément aux résultats de mesure transmis dans le message de rapport (BN), de manière à obtenir une vitesse de transfert de données aussi élevée que possible.
PCT/DE2002/002351 2001-08-01 2002-06-27 Procede permettant de faire fonctionner un systeme radio, systeme radio y relatif ainsi qu'emetteur et recepteur y relatifs WO2003017539A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10137583.2 2001-08-01
DE2001137583 DE10137583A1 (de) 2001-08-01 2001-08-01 Verfahren zum Betreiben eines Funksystems sowie entsprechend ausgestaltetes Funksystem und entsprechend ausgestalteter Sender und Empfänger

Publications (1)

Publication Number Publication Date
WO2003017539A1 true WO2003017539A1 (fr) 2003-02-27

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Application Number Title Priority Date Filing Date
PCT/DE2002/002351 WO2003017539A1 (fr) 2001-08-01 2002-06-27 Procede permettant de faire fonctionner un systeme radio, systeme radio y relatif ainsi qu'emetteur et recepteur y relatifs

Country Status (2)

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DE (1) DE10137583A1 (fr)
WO (1) WO2003017539A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110705A1 (fr) * 2009-03-23 2010-09-30 Telefonaktiebolaget L M Ericsson (Publ) Procédé et disposition dans un réseau de communication sans fil
US9479981B2 (en) 2012-06-11 2016-10-25 Telefonaktiebolaget Lm Ericson (Publ) Methods for handover configuration
US11477850B2 (en) 2015-08-21 2022-10-18 Samsung Electronics Co., Ltd. Communication method and device of terminal in wireless communication system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966657A (en) * 1997-07-24 1999-10-12 Telefonaktiebolaget L M Ericsson (Publ) Method and system for radio frequency measurement and automatic frequency planning in a cellular radio system
WO2000062456A1 (fr) * 1999-04-12 2000-10-19 Samsung Electronics Co., Ltd. Dispositif et procede de transmission intermittente dans un systeme de telecommunication a amrc
WO2001031938A2 (fr) * 1999-10-27 2001-05-03 Siemens Aktiengesellschaft Procede d'attribution dynamique de ressources dans un systeme de communications radio numerique
US6256486B1 (en) * 1999-09-09 2001-07-03 Nortel Networks Limited Method and apparatus for measuring co-channel interference

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966657A (en) * 1997-07-24 1999-10-12 Telefonaktiebolaget L M Ericsson (Publ) Method and system for radio frequency measurement and automatic frequency planning in a cellular radio system
WO2000062456A1 (fr) * 1999-04-12 2000-10-19 Samsung Electronics Co., Ltd. Dispositif et procede de transmission intermittente dans un systeme de telecommunication a amrc
US6256486B1 (en) * 1999-09-09 2001-07-03 Nortel Networks Limited Method and apparatus for measuring co-channel interference
WO2001031938A2 (fr) * 1999-10-27 2001-05-03 Siemens Aktiengesellschaft Procede d'attribution dynamique de ressources dans un systeme de communications radio numerique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110705A1 (fr) * 2009-03-23 2010-09-30 Telefonaktiebolaget L M Ericsson (Publ) Procédé et disposition dans un réseau de communication sans fil
US8948759B2 (en) 2009-03-23 2015-02-03 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement in wireless communications network
US9479981B2 (en) 2012-06-11 2016-10-25 Telefonaktiebolaget Lm Ericson (Publ) Methods for handover configuration
US9622123B2 (en) 2012-06-11 2017-04-11 Telefonaktiebolaget Lm Ericsson (Publ) Methods for handover configuration
US11477850B2 (en) 2015-08-21 2022-10-18 Samsung Electronics Co., Ltd. Communication method and device of terminal in wireless communication system

Also Published As

Publication number Publication date
DE10137583A1 (de) 2003-02-13

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