WO2003045017A1 - Procede pour la transmission de donnees en paquets dans un systeme de communication radio - Google Patents

Procede pour la transmission de donnees en paquets dans un systeme de communication radio Download PDF

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Publication number
WO2003045017A1
WO2003045017A1 PCT/EP2002/011952 EP0211952W WO03045017A1 WO 2003045017 A1 WO2003045017 A1 WO 2003045017A1 EP 0211952 W EP0211952 W EP 0211952W WO 03045017 A1 WO03045017 A1 WO 03045017A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
time
network device
critical
critical data
Prior art date
Application number
PCT/EP2002/011952
Other languages
German (de)
English (en)
Inventor
Thomas Stark
Carsten Ball
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
Priority claimed from DE10156889A external-priority patent/DE10156889A1/de
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2003045017A1 publication Critical patent/WO2003045017A1/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
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H04L47/2433—Allocation of priorities to traffic types
    • 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
    • H04L47/2466—Traffic characterised by specific attributes, e.g. priority or QoS using signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/62—Queue scheduling characterised by scheduling criteria
    • H04L47/6215—Individual queue per QOS, rate or priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • 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
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • Radio communication systems are used to transmit information, voice or data using electromagnetic waves via a radio interface, also known as an air interface, between a transmitting and a receiving radio station.
  • a radio communication system is the known GSM mobile radio system and its further development with a packet data service GPRS or EGPRS, the architecture of which is described, for example, in B. Walke "Mobile radio networks and their protocols", Volume 1, Teubner-Verlag Stuttgart, 1998, page 139 to 151 and page 295 to page 311.
  • a channel formed by a narrow-band frequency range and a time slot is provided for the transmission of a subscriber signal since a subscriber signal in one channel differs in frequency and time from the other subscriber signals, the receiving channel can
  • the individual subscribers are also differentiated by different spreading codes.
  • packet-switched data transmission also called packet data transmission
  • the data transmission for several participants takes place over one and the same physical channel.
  • Each participant can also occupy several physical channels at the same time.
  • Data packets for the nodes to which the same physical channel is assigned are transmitted in multiplex. This means that the data packets are delayed differently depending on the load on the channel. The data packets therefore do not arrive at the recipient at a specific predetermined time.
  • the problem underlying the invention is to specify a method for packet data transmission in a radio communication system, in which it can be guaranteed that time-critical data can be sent at a predetermined time.
  • packet data in the form of data packets 30 are transmitted.
  • Time-critical and non-time-critical data are separated from data packets present in a sending network device.
  • the time-critical data are managed in a separate processing queue of the sending network device and transmitted with higher priority than the 5 non-time-critical data between the sending network device and a receiving network device.
  • the time-critical data is managed in a separate processing queue and processed with increased priority. Since the time-critical data are transmitted via separate processing queues with increased priority, 5 a time of transmission can be guaranteed for the time-critical data.
  • the new data packet can in particular subsequently be sent via an air interface.
  • the time-critical data in the sending network device is added information about a predefinable time of transmission of the time-critical data via an air interface;
  • This time information accordingly contains, for example, in a radio communication system
  • complete data packets with useful data and signaling data can be transmitted as time-critical data, which are to be transmitted at a predetermined time via an air interface.
  • the information about a predefinable transmission time contains parameters which define the predefined time on the air interface, for example the number of a time frame.
  • Signaling data in particular, can be separated from a data packet and transmitted as time-critical data. The rest of the data packet is then transmitted independently of this signaling data.
  • the signaling data can include the entire header of the data packet or parts of the header. A new data packet is put together in the receiving network device and further processed in accordance with the time requirement of the signaling data.
  • a data packet in addition to a user data part, also contains information in a data packet header which influences the timing of an air interface via which the data packet is sent. For this time-critical information, it must be ensured that a certain frame number is sent via the air interface, while the useful information can only be sent later.
  • the signaling data can be used, for example, to signal a request for an acknowledgment of receipt for received data. This requirement is often referred to as "polling *".
  • the request for an acknowledgment of receipt for received data packets is made, for example, by means of a predefined field, the RRBP field " (Relative Reserved Block Period) in the so-called downward direction, ie in the transmission direction from a base station to a handset.
  • the RRBP field Relative Reserved Block Period
  • a predetermined number of radio blocks must be reserved later for a resource for the acknowledgment of receipt. The number of radio blocks is included in the signaling data.
  • control information that cannot be assigned to a single data packet can be treated as time-critical data.
  • Such control information is, in particular, information for controlling an air interface.
  • the so-called Uplink State Flag (USF) signaling information which is used to send in the downward direction to which subscriber a plurality of subscribers are assigned. ordered channel in the upward direction can be treated in this way.
  • USF Uplink State Flag
  • the method can be used in particular for data transmissions between a base station and a base station controller.
  • the sending network device and the receiving network device can work in particular according to the Internet protocol or with ATM technology.
  • Figure 1 shows a section of a radio communication system with packet data service.
  • FIG. 2 shows schematically the transmission of packet data in the radio communication system with the aid of various processing queues.
  • a base station controller BSC has a user data interface PH and a packet data controller PCU '(see FIG. 1) ".
  • the base station controller BSC is on the one hand with a
  • transcoding unit TRAU and, on the other hand, connected to a packet data service node SGSN.
  • Speech data is transmitted from the transcoding unit TRAU via an A interface to the user data interface PI1 of the base station controller BSC.
  • the packet data service node SGSN receives packet data in
  • the base station controller BSC is connected to a base station BTS via an Abis interface!
  • the base station BTS has a 'user data PI2, which on the Abis-interface with the user data PI1 of Ba system control BSC is connected.
  • the base station BTS has transmitting / receiving units CU, each of which is connected on the one hand to the user data interface PI2 and on the other hand to feed lines to an antenna A. Via antenna A, data is sent to mobile subscribers via an air interface.
  • a separation device SP a processing queue LPQ of low priority, a processing queue HPQ and a separate processing queue SQ1 for managing time-critical data are provided in the user data interface PI1 of the base station controller BSC, which acts as a transmitting network device (see FIG. 2).
  • the separating device SP data packets present in the base station controller BSC are broken down into time-critical data and non-time-critical data.
  • Control information STI that cannot be explicitly assigned to a data packet, signaling information SII that was separated from a header of a data packet, and data packets DP that are to be sent at a specific point in time, which is specified, for example, by a frame number (frame number), are considered as time-critical data , managed.
  • Non-time-critical data HDP are managed in the processing queue HPQ and non-time-critical data LDP are processed in the processing queue LPQ low priority, the data packets HDP to be transmitted with higher priority than the data packets LDP.
  • the low-priority processing queue LPQ, the high-priority processing queue HPQ and the separate processing queue SQ1 are connected to a transmission timing control unit S1.
  • the transmission time control unit S1 controls the transmission time of the individual data, which are managed in the various processing queues LPQ, HPQ, SQ1, via the Abis interface to the base station BTS.
  • Time information is also added to the time-critical data.
  • the time information contains in particular information relating to the I- the exact time of transmission from the base station via the air interface are suitable, such as the number of the time frame desired for the transmission. Furthermore, the desired channel number can also be used when assigning 5 multiple time slots for one subscriber (so-called multi-slot allocation).
  • L0 queue HQ is provided for the signaling data SII separated from data packets and the control data STI and a processing queue DQ for the non-time-critical data HDP and LDP.
  • the received data packets DP which are to be sent at a predetermined transmission time, are in
  • L5 manages the separate processing queue SQ2.
  • the separated signaling information and the control information, which cannot be assigned to a data packet, are managed in the processing queue HQ.
  • a transmission time control S2 .5 is provided, which comprises a reconstruction device RE.
  • the reconstruction device RE data packets HDP, LDP with signaling information SII or STI are combined to form new data packets which are sent via the air interface.
  • the transmission time control S2 controls the transmission time of the packet data via the air interface.
  • the time information that was added by the transmission timing controller S1 of the base station controller BSC to the signaling data SII, the control data STI and the data packets DP that are to be sent at a predetermined time is used.
  • the method was explained using an example which corresponds to a radio communication system of the second mobile radio generation, for example GSM with GPRS. The method can be easily transferred to other mobile radio standards, for example the third mobile radio generation.

Landscapes

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

Abstract

Selon l'invention, des données en paquets sont transférées sous forme de paquets de données, les données temporellement critiques étant séparées des données non critiques temporellement parmi les paquets de données présents dans un dispositif de réseau émetteur. Les données temporellement critiques sont gérées dans une file de traitement distincte (SQ1) et sont transmises à un dispositif de réseau récepteur avec une priorité supérieure à celle des données non critiques temporellement. Dans le dispositif de réseau récepteur (BTS), les données temporellement critiques sont prises en charge dans une file de traitement distincte (SQ2) avec une priorité accrue.
PCT/EP2002/011952 2001-11-20 2002-10-25 Procede pour la transmission de donnees en paquets dans un systeme de communication radio WO2003045017A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01127675.5 2001-11-20
DE10156889A DE10156889A1 (de) 2001-11-20 2001-11-20 Verfahren zur Paketdatenübertragung in einem Funkkommunikationssystem
EP01127675 2001-11-20
DE10156889.4 2001-11-20

Publications (1)

Publication Number Publication Date
WO2003045017A1 true WO2003045017A1 (fr) 2003-05-30

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ID=26010617

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/011952 WO2003045017A1 (fr) 2001-11-20 2002-10-25 Procede pour la transmission de donnees en paquets dans un systeme de communication radio

Country Status (1)

Country Link
WO (1) WO2003045017A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406743A (en) * 2003-10-03 2005-04-06 Hutchison Whampoa Three G Ip Scheduling communication transmissions in telecommunications networks
EP1841148A1 (fr) * 2006-03-31 2007-10-03 Sap Ag Sélection de canaux pour transmission sans fil pour dispositif distant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810808A2 (fr) * 1996-05-29 1997-12-03 Nippon Telegraph And Telephone Corporation Dispositif pour le transport de cellules ATM
WO2000042789A1 (fr) * 1999-01-14 2000-07-20 Telefonaktiebolaget Lm Ericsson (Publ) Transmission prioritaire de divers types de communications vocales dans un trafic de reseau
DE19958510A1 (de) * 1999-12-04 2001-06-07 Bosch Gmbh Robert Verfahren zum Betreiben eines Mobilfunknetzes
EP1134943A1 (fr) * 2000-03-13 2001-09-19 Mitsubishi Denki Kabushiki Kaisha Procédé de transmission entre une station de base d'un réseau d'accès et un contrôleur de réseau d'accès d'un système de télécommunications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810808A2 (fr) * 1996-05-29 1997-12-03 Nippon Telegraph And Telephone Corporation Dispositif pour le transport de cellules ATM
WO2000042789A1 (fr) * 1999-01-14 2000-07-20 Telefonaktiebolaget Lm Ericsson (Publ) Transmission prioritaire de divers types de communications vocales dans un trafic de reseau
DE19958510A1 (de) * 1999-12-04 2001-06-07 Bosch Gmbh Robert Verfahren zum Betreiben eines Mobilfunknetzes
EP1134943A1 (fr) * 2000-03-13 2001-09-19 Mitsubishi Denki Kabushiki Kaisha Procédé de transmission entre une station de base d'un réseau d'accès et un contrôleur de réseau d'accès d'un système de télécommunications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406743A (en) * 2003-10-03 2005-04-06 Hutchison Whampoa Three G Ip Scheduling communication transmissions in telecommunications networks
EP1841148A1 (fr) * 2006-03-31 2007-10-03 Sap Ag Sélection de canaux pour transmission sans fil pour dispositif distant

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