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WO2001015472A1 - Dispositif cote alimentation et procede de transmission de donnees dans un systeme de radiocommunication - Google Patents

Dispositif cote alimentation et procede de transmission de donnees dans un systeme de radiocommunication Download PDF

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Publication number
WO2001015472A1
WO2001015472A1 PCT/EP2000/008008 EP0008008W WO0115472A1 WO 2001015472 A1 WO2001015472 A1 WO 2001015472A1 EP 0008008 W EP0008008 W EP 0008008W WO 0115472 A1 WO0115472 A1 WO 0115472A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
data
real
subscriber station
dch
Prior art date
Application number
PCT/EP2000/008008
Other languages
German (de)
English (en)
Inventor
Christian Menzel
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 WO2001015472A1 publication Critical patent/WO2001015472A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/245—Traffic characterised by specific attributes, e.g. priority or QoS using preemption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

Definitions

  • information for example voice, image information or other data
  • the electromagnetic waves are emitted at carrier frequencies that lie in the frequency band provided for the respective system.
  • Frequencies at 900, 1800 and 1900 MHz are used for the introduced GSM mobile radio system (Global System for Mobile Communication).
  • GSM Global System for Mobile Communication
  • UMTS universal mobile telecommunication system
  • 3rd generation systems frequencies in the frequency band of approx. 2000 MHz are provided.
  • GPRS general packet radio system
  • the resource for example a transmission channel
  • the resource is only assigned when a data packet is actually transmitted.
  • the data packets on the send side are assigned to a resource until they are sent.
  • the point in time is buffered and processed according to their order.
  • the resource (the transmission channel) can be optimally used for non-time-critical services.
  • the object of the invention is to provide an improved method and an improved network-side device which combine the packet data transmission and the transmission of real-time data. This object is achieved by the method having the features of claim 1 and the network-side device according to claim 12. Advantageous developments of the invention can be found in the subclaims.
  • a transmission channel between a network-side device and a subscriber station is exclusively assigned for an undelayed transmission of real-time data of high priority.
  • pauses in the transmission of the real-time data are detected.
  • the exclusivity of the assignment is temporarily removed and low-priority data is transmitted to other subscriber stations in the transmission channel.
  • the Echtzeitda ⁇ th high priority and the low priority data detected by the respective receiving subscriber station by evaluating a first transmitted bit sequence as addressed to the subscriber station.
  • One bit denotes, for example, the real-time data, while the low priority data, which can also be transmitted to several subscriber stations, are addressed, for example, by a longer bit sequence.
  • the invention is combined with a method (ARQ) for retransmitting incorrectly received data in order to ensure the quality of the transmission.
  • the data are provided with an address head and a numbering, so that the numbering can be evaluated at the receiving end in the event of transmission errors.
  • Data received with interference is recognized, the transmission side is signaled with the numbering and is repeatedly transmitted by it.
  • a data packet that is only incompletely transmitted due to the end of the detected pause is retransmitted, for example within the next detected pause.
  • the data packets are cached in a queue particularly advantageously. Intelligent readout from one or more queues optimizes the transmission of the packet data, for example with a differentiated prioritization of the data in the individual queues.
  • the data are transferred to these transmission channels. divides, which significantly increases the average transmission rate.
  • the low-priority data are advantageously prepared on the transmission side for separate transmission in a plurality of transmission channels. For example, several queues and a multiplexer are available to prepare the data. The data is divided, for example by means of the multiplexer, for the separate transmission and is transmitted separately to another subscriber station during the pauses detected. The breaks can occur at the same time or independently of time.
  • the subscriber station informs the base station of possible transmission modes by means of appropriate signaling. For example, data in several channels are only transmitted to a subscriber station simultaneously within a time slot if the subscriber station can also evaluate these channels simultaneously (as with different spreading codes, for example). If the data is read from several queues, simultaneous transmission in several transmission channels is possible. The data are reassembled on the receiving side.
  • FIG. 1 shows a block diagram of a radio communication system, in particular a mobile radio system
  • FIG. 2 shows a schematic representation of a transmission channel
  • FIG. 3 shows a transmission of data of low priority in the breaks of the transmission of real-time data of high priority
  • 4 shows addressing and numbering of the data by means of bit sequences
  • 5 shows a transmission of data of low priority with bit sequences for addressing and numbering
  • FIG. 6 different ciphers of real-time data of high priority and data of low priority
  • FIG. 7 ciphering of real-time data and addressing and numbering of data of low priority
  • FIG. 9 shows a schematic illustration of a network-side device.
  • the radio communication system shown in FIG. 1 and designed as an example as a mobile radio system consists of a large number of mobile switching centers SGSN, which are networked with one another or provide access to a fixed network PDN. Furthermore, these mobile switching centers SGSN are each connected to at least one device for allocating radio resources RNC. Each of these RNC devices in turn enables a connection to at least one base station BS.
  • This base station BS is a radio station which establishes and signals communication connections to mobile or stationary subscriber stations MS, MSI, MS1, MS2 and MS3 via a radio interface.
  • the functionality of this structure is used by the method according to the invention. Use in, for example, a wireless subscriber line system (access network) is also possible.
  • a receiving device EE for receiving data d1, dl and d2, which are sent by the base station BS, is implemented.
  • An identification device IE also implemented, is used to identify data d1, dl ⁇ and d2 addressed to the subscriber station MS, MSI, MS1 ⁇ MS21 and MS3.
  • DCH transmission channels
  • DCH "are dl for undelayed transfer of real time data, dl x exclusively assigned.
  • Shared transmission channels DSCH are not exclusively assigned to a transmission to several subscriber stations MS2 and MS3. They are used for non-time-critical, delayed transmissions of data packets to different subscriber stations MS2, MS3. For this purpose, the transfer is also assigned (allocated). The assignment is made via a separate signaling channel and delays the transmission by a period of time that is unacceptable for the transmission of real-time data dl, dl ⁇ .
  • data d2 of low priority are additionally transmitted in two transmission channels DCH, DCH during the breaks in the transmission of the real-time data d1, dl ⁇ of high priority.
  • the low-priority data d2 is transmitted in the breaks, for example two real-time transmissions.
  • the low-priority data d2 are thus transmitted to the subscriber station MS via two transmission channels DCH and DCH ⁇ .
  • the bit sequences AK, NK are correspondingly short to ensure transmission of the real-time data d1.
  • the length of the bit sequence for addressing the data d2 low priority ent ⁇ speaking varies the number of subscriber stations MS.
  • FIG. 5 shows an example of an arrangement of real-time data d1 high priority and data d2 low priority with bit sequences NK, AK for addressing and numbering. Between the data d1, d2 and the bit sequences AK, NK, for example, transmission pauses are used to separate them.
  • FIG. 6 Another embodiment of the method according to the invention can be seen in FIG. 6.
  • the real-time data d1 and the data d2, d3, d4 of low priority are encrypted differently.
  • the subscriber station-specific data d1, d2, d3 or d4 to be transmitted are encrypted differently for the respective subscriber station MSI, MS2, MS3 or MS4.
  • a subscriber station MSI can only decrypt the data dl specifically encrypted for it. All other subscriber stations MS2, MS3, MS4 decrypt this data dl as faulty and they discard the data dl.
  • a numbering or addressing, as mentioned above, is necessary when using a different encryption of the data d1, d2 if an ARQ method is to be used.
  • FIG. 7 shows a combination of the methods of encryption and the use of bit sequences for addressing.
  • an identifier KN for example a signal bit
  • the real-time data dl are generated using the Sl encryption of data d2 low priority under shoot ⁇ while data d2 low priority are distinguished by the bit sequence AK to address the.
  • the identifier signals the only encrypted data d1 as not readable and evaluable for an ARQ method.
  • the quality of service parameters DGP are evaluated.
  • the evaluation shows, for example, that real-time data d1 should be transmitted without delay. This corresponds to a service with a high quality of service, ie with OO N> MP 1
  • Breaks P is possible and accordingly the detection of the breaks P is controlled with a control device ST.
  • the difference between the maximum and average transmission rate of the real-time data d1 is relatively small and the ratio is below the threshold value, a high number of pauses P is rather unlikely. Detection of the pauses P is suppressed and no logical connections to further subscriber stations MS are set up for this transmission channel DCH. With the suppression of the detection, computing resources in the transmission-side network device BS are saved.
  • the logical connection for the transmission channel DCH enables a transmission of data d2 of low priority, that is to say of a low quality of service. Neither a short transfer or access delay nor a guaranteed bit rate can be made available to the service. Such low-quality services are provided for correspondingly low fees and allow non-time-critical transmissions, for example the transmission of an email.
  • the detection of the pauses P is triggered by a control ST.
  • the control ST decides from the evaluation of the quality of service parameters whether the number and length of the breaks P is suitable for a non-time-critical transmission and, if necessary, controls the detection of the breaks P for one or a group of connections to partial subscriber stations MS. If the quality of service parameters DGP change, the control device ST can in turn interrupt a detection of the pauses P.
  • the process sequence, the real-time data d1 to be transmitted are encrypted specifically for the subscriber station MSI and transmitted without delay. Due to the signaling, the pauses P are co co KM P> P 1 c ⁇ o C ⁇ O C ⁇ o cn

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Dans un système de radiocommunication, on affecte un canal de transmission, situé entre un dispositif côté alimentation et un poste du réseau, exclusivement à une transmission instantanée de données temps réel prioritaires. Côté émission, on détecte les pauses de transmission des données temps réel. Pendant ces pauses, l'exclusivité de l'affectation est temporairement interrompue. Une transmission des données non prioritaires vers les autres postes du réseau peut alors avoir lieu dans le canal de transmission.
PCT/EP2000/008008 1999-08-19 2000-08-16 Dispositif cote alimentation et procede de transmission de donnees dans un systeme de radiocommunication WO2001015472A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939366.4 1999-08-19
DE19939366A DE19939366B4 (de) 1999-08-19 1999-08-19 Netzseitige Einrichtung und Verfahren zur Übertragung von Daten in einem Funk-Kommunikationssystem

Publications (1)

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WO2001015472A1 true WO2001015472A1 (fr) 2001-03-01

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DE (1) DE19939366B4 (fr)
WO (1) WO2001015472A1 (fr)

Cited By (2)

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US6944457B2 (en) 2001-03-09 2005-09-13 Nokia Corporation Communication system, a communication device and a method for performing communication
EP3326613A1 (fr) 2012-07-26 2018-05-30 Camurus AB Formulations d'opioïdes

Families Citing this family (3)

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DE10156889A1 (de) * 2001-11-20 2003-06-12 Siemens Ag Verfahren zur Paketdatenübertragung in einem Funkkommunikationssystem
ATE383022T1 (de) * 2002-06-13 2008-01-15 Alcatel Lucent Zuteilung von übertragungskapazität eines gemeinsamen mediums in einem mehrpunkt-zu-punkt- netzwerk
DE10351431A1 (de) * 2003-10-28 2005-06-16 Mario Lehmann Kommunikationssystem

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US4980886A (en) * 1988-11-03 1990-12-25 Sprint International Communications Corporation Communication system utilizing dynamically slotted information
EP0521610A2 (fr) * 1991-06-12 1993-01-07 International Business Machines Corporation Réseau cellulaire numérique superposé
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WO1997036405A1 (fr) * 1996-03-25 1997-10-02 Nokia Telecommunications Oy Gestion de la priorite des donnees a faire transiter dans un routeur
US5740542A (en) * 1995-08-02 1998-04-14 Motorola, Inc. Method of transmitting data during voice pauses in a synchronous communication system
WO1998057509A2 (fr) * 1997-06-10 1998-12-17 Nokia Networks Oy Procede d'augmentation de la capacite de transmission de donnees dans un reseau radio

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FR2674999B1 (fr) * 1991-04-03 1994-10-07 Thomson Csf Systeme de communication applicable notamment au controle du trafic aerien.
FI99066C (fi) * 1995-01-31 1997-09-25 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä
AU3957597A (en) * 1996-06-13 1998-01-07 Streamix Corporation Broadcast overlay protocol method and system

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Publication number Priority date Publication date Assignee Title
US4980886A (en) * 1988-11-03 1990-12-25 Sprint International Communications Corporation Communication system utilizing dynamically slotted information
EP0521610A2 (fr) * 1991-06-12 1993-01-07 International Business Machines Corporation Réseau cellulaire numérique superposé
GB2294614A (en) * 1994-10-28 1996-05-01 Int Maritime Satellite Organiz Communication method and apparatus for providing data communication in addition to voice
US5740542A (en) * 1995-08-02 1998-04-14 Motorola, Inc. Method of transmitting data during voice pauses in a synchronous communication system
WO1997036405A1 (fr) * 1996-03-25 1997-10-02 Nokia Telecommunications Oy Gestion de la priorite des donnees a faire transiter dans un routeur
WO1998057509A2 (fr) * 1997-06-10 1998-12-17 Nokia Networks Oy Procede d'augmentation de la capacite de transmission de donnees dans un reseau radio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6944457B2 (en) 2001-03-09 2005-09-13 Nokia Corporation Communication system, a communication device and a method for performing communication
EP3326613A1 (fr) 2012-07-26 2018-05-30 Camurus AB Formulations d'opioïdes

Also Published As

Publication number Publication date
DE19939366B4 (de) 2006-08-31
DE19939366A1 (de) 2001-03-01

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