WO2002051176A1 - Procede de transmission de donnees dans un systeme de communication comportant differentes unites, systeme de station de base installe a cet effet et systeme de radiocommunication - Google Patents

Procede de transmission de donnees dans un systeme de communication comportant differentes unites, systeme de station de base installe a cet effet et systeme de radiocommunication Download PDF

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Publication number
WO2002051176A1
WO2002051176A1 PCT/EP2001/014413 EP0114413W WO0251176A1 WO 2002051176 A1 WO2002051176 A1 WO 2002051176A1 EP 0114413 W EP0114413 W EP 0114413W WO 0251176 A1 WO0251176 A1 WO 0251176A1
Authority
WO
WIPO (PCT)
Prior art keywords
connection
time slots
base station
transmission
reserved
Prior art date
Application number
PCT/EP2001/014413
Other languages
German (de)
English (en)
Inventor
Arnulf Deinzer
Steffen Wagner
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 DE10063679A external-priority patent/DE10063679B4/de
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2002051176A1 publication Critical patent/WO2002051176A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • 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 data using electromagnetic waves via a radio interface between a transmitting and a receiving radio station.
  • An example of a radio communication system is the known GSM mobile radio network, in which 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 a channel is separated in frequency and time from other subscriber signals, the receiving radio station can detect the data of this subscriber signal.
  • newer radio communication systems such as the UMTS system, the individual subscribers are also distinguished by different spreading codes.
  • a known GSM mobile radio network comprises a large number of mobile switching centers MSC which are networked with one another or which provide access to a fixed network PSTN. Furthermore, these mobile switching centers MSC are each connected to a base station controller BSC. Each base station controller BSC in turn enables a connection to at least one base station BTS and manages the radio resources of the connected base stations BTS. Such a base station BTS is a radio station which can set up a message connection to mobile stations MS via a radio interface. For the transmission of packet-switched data, the base station controller BSC is also connected to a packet data service node (serving GPRS support note) SGSN, which provides access to a fixed data network PDN.
  • An operation and maintenance center OMC implemented ⁇ L t to HH
  • P- 03 P P P P -3 rt N P- tr ⁇
  • the transmission capacity of 16 kbps sub-time slots is limited to 320 bits, so that with GPRS and EDGE only the encodings with the lowest data rate, e.g. CS1, CS2, MCS1 and MCS2 can be supported with today's technology.
  • new circuit-switched package services such as ECSD with transmission rates of up to 56kbps / 64kbps per time slot on the air interface require transmission capacity greater than 320bit / 20ms.
  • the invention is therefore based on the problem of specifying a method for data transmission in a radio communication system comprising different units, which supports the transmission of larger amounts of data per channel on the air interface. Furthermore, a base station system and a
  • Radio communication system can be specified in which the procedure takes place.
  • Radio communication system according to claim 32. Further embodiments of the invention emerge from the subclaims.
  • the data transmission between two units of a radio communication system takes place via a transmission link on which a predetermined transmission capacity in the form of a number of time slots is reserved for the connection.
  • a predetermined transmission capacity in the form of a number of time slots is reserved for the connection.
  • the connection is assigned one or more time slots from the reserved transmission capacity, via which the data transmission between the units takes place.
  • the method can be used both for data transmission between a base station and a base station controller and between a base station controller and a transcoding and rate adaptation unit TRAU or between a transcoding unit (Transcoding and Rate Adaptation Unit TRAU) and a mobile switching center ,
  • Base station, base station control, transcoding and rate adaptation unit (TRAU) or mobile switching center in this case represent the different units of the radio communication system.
  • Transmission capacity can be released again. After the connection is ended, all time slots assigned to the connection are released and are available for other connections as part of the reserved transmission capacity.
  • Unused time slots are released, for example, in a time-controlled manner using two timers.
  • the first timer controls the release during data rate adjustment (link adaptation). This release should be stopped slowly so that the connection quickly has additional capacity again when radio conditions improve, without having to request it again.
  • the second timer controls the release after the connection is terminated. He should react very quickly. If the transmission capacity is requested by other connections, the time slots can be released immediately. LO ⁇ t to HH
  • PJ td P tö P rt Pi P- ⁇ ⁇ LQ H Hl PP ii P ⁇ i ⁇ li ii J CQ P 3 & ⁇ PJ LQ PP Pi ⁇ ⁇ P ⁇ P.
  • X ⁇ P P rt P Pi rt 3 P> ⁇ J P- LQ ⁇ Tt ⁇ li 01 rt ⁇ ! P ⁇ IO P- P. 03 O P. tr in. P- ⁇ ⁇ rt P
  • P ⁇ PP ⁇ P ii rt co ⁇ PPP i ⁇ PP ⁇ P- ⁇ P Pi ⁇ P- LQ P 1 rt Hl ⁇ rt
  • P- Hi P P- Hi IS.
  • P tr P- 0 X ⁇ P- P P- P- P 1 li p, rt ⁇ P- ii li P ⁇ tsi P- H P - P ) PP PJ ⁇ Pi P P> P ⁇ LQ P rt P- P- PP ) ii ⁇ ⁇ rt Hi 01 01 ⁇ ⁇ CQ NN ⁇ Hi PA ri P- P • d tr Pi M LQ ⁇ !
  • a connection is assigned a smaller number of time slots if the number of requested time slots is not available in the reserved transmission capacity.
  • This procedure has the advantage that a connection can still be established or maintained in the event that there are no longer sufficient time slots in the reserved transmission capacity.
  • the service transmitted via this connection is then available with lower performance (Quality of Service). If there are existing connections in the cell with lower priority than the new service to be set up, it is within the scope of the invention to release the time slots of the existing low-priority connections in favor of the new service (so-called service downgrade). Alternatively, low-priority connections can also be moved to neighboring cells (handover, cell reselection). This possibility also exists for the new service if a lower performance cannot be tolerated or if there are no other connections to downgrade in the cell.
  • the number of time slots allocated to a connection is preferably dynamically adapted to the requirements of the connection during the connection.
  • the requirements for the connection can be changed by adapting the service, for example by changing the coding scheme (link adaptation) or by moving the mobile station, through which the LO ÜO to to HH
  • Transmission paths include both the transmission via different base stations and the transmission over different carrier frequencies of one and the same base station, which can be carried out using time-division multiplexing, frequency division multiplexing or spreading code multiplexing the transmission of voice data as well as packet data according to different protocols, in particular the frame relay protocol and the internet protocol
  • the different services include in particular voice, data and / or sig tionalisation.
  • the transmission via a unit e.g.
  • a base station, a service, a transmission route or a transmission method are preferred, it is within the scope of the invention to provide the corresponding subset in a predetermined minimum size or to ensure, based on a suitable prioritization, that low-priority services in the event of a conflict, Transmission channels or transmission methods release the corresponding capacity.
  • the size of the subsets of the reserved transmission capacity depending on the connection volume of the respective type. If the size of the subsets is dimensioned such that the sum of the subsets is less than the total reserved transmission capacity, it is achieved that even if one type of connection has exhausted the subsets of the transmission capacity reserved for it, connections of this type can still be established , using the excess of the reserved transmission capacity.
  • a higher priority to assign a higher priority to a service, a transmission path or a transmission method.
  • the requirements for connections for the service, transmission path or transmission method with the increased priority are first met.
  • the requirements for connections for services, transmission paths or transmission methods are then processed without increased priority.
  • New connections with a higher priority preferably always cause the downgrade or the delay (queuing) or the handover / cell reselection of low-priority connections if the capacity available at the moment is not sufficient.
  • a capacity allocation unit is preferably used in the base station controller, which controls the course of the method and tries to optimally meet all quality of service requirements.
  • the remaining capacity is available for internal data exchange between the base station and the base station controller, e.g. for signaling, measurement data transmission and software download.
  • Figure 1 shows a known radio communication system
  • FIG. 2 shows a radio communication system in which a base station controller controls three base stations and the data transmission between the base station controller and the base stations takes place using the method according to the invention.
  • FIG. 3 shows a radio communication system in which a base station controller controls a base station and in which the data transmission between the base station controller and the base station takes place according to the method according to the invention.
  • a base station controller BSC ⁇ controls three base stations BTS (see Figure 2).
  • the base station controller BSC ⁇ is connected to each of the base stations BTS X via transmission links US.
  • the transmission links US are designed as PCM24 / 30 lines.
  • Each of the base stations BTS ⁇ is connected to the base station controller BSC ⁇ via two PCM24 / 30 lines US.
  • the transmission via the PCM24 / 30 lines takes place via 16kbps time slots ZS.
  • Each of the base stations BTS comprises a central control unit (core unit) GORE.
  • each of the base stations BTS ⁇ includes carrier units CU that operate in different frequency windows.
  • the outputs of the carrier units CU from one and the same base station BTS X are connected to a combiner C in which the signals from the different carrier units CU are passed to an antenna A.
  • Mobile stations MS ⁇ are supplied with signals via antenna A.
  • the base station controller BSC ⁇ is connected on the one hand via a rate adjustment unit TRAU and a mobile switching center MSC ⁇ to a fixed network PSTN ⁇ .
  • the base station controller is BST via a packet data service node co LO t to HH
  • TJ rt PJ P ⁇ CO er P ⁇ J TJ 2 ⁇ tö PP 1 03 53 LQ p- 03 ⁇ o P ⁇ CQ ⁇ r rr ⁇ rt li
  • P P- P- P 03 TJ P- ⁇ P ) P.
  • Pi ) PP ) Hi Pi PJ tr P ⁇ CO O rt Hi 53 ⁇ rt ⁇ CQ ⁇ CO ⁇ 03 ⁇ P 0 PP ) rt tr l pi 01 o 3 ii H rt P P- tsi ii ⁇ • ⁇ 3 - tr rt P- LQ IV
  • Speech data which are supplied to the Geran base station controller GBSC by the rate adaptation unit TRAU 'are in 16 kbps time slots.
  • Packet data that are fed to the Geran- base station controller GBSC via the G interface are divided into radio blocks in the packet data control unit PCU ⁇ , the size of which depends on the coding depth used in the transmission.
  • a radio block can contain 160 to 1300 bits.
  • Circuit-switched data that is fed to the common platform CP via the I U (CS) interface from the third-generation 3G CN communication system, and packet-switched data that is fed to the common platform via the I u (PS) interface from the third-party communication network Generation 3G CN are supplied to the packet data control unit PCU 1 and there are also divided into radio blocks of different sizes.
  • time slots ZS * are assigned to the connection by the capacity allocation unit of the geran base station controller GBSC.
  • the number of assigned time slots ZS ⁇ depends on the type of data transmitted and thus the size of the radio blocks and / or the distance of the mobile station MSi involved in the connection from the base station BTS ⁇ '. If a radio block to be transmitted contains more than 320 bits, the maximum capacity of an ⁇ kbps time slot, the connection is assigned several time slots. These time slots can be arranged on different lines of the transmission link or spread over time.
  • the time slots ZS are assigned dynamically when the connection is established by a signaling message, for example by channel_activation (service type, TRX number, time slot number, resource list). If the time slots ZS X are on different physical links,
  • the packet data control unit PCU 1 in FIG. 3 can also be integrated into the base station BTS '' instead of in the base station control BSC '. Then the segmentation of the radio or radio bio for packet data no longer takes place in the base station controller BSC ⁇ but only in the base station BTS ' 1 , ie also that the frame relay, ATM or IP data are transmitted via Gb and Iu are forwarded by the BSC Basistations devisung 'to the base station BTS' ⁇ must and that the base station BTS '1 in their central unit (core unit) c0re x has a packet data interface.
  • core unit central unit

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

Abstract

l'invention concerne la transmission de données entre différentes unités, par exemple, une station de base (BTS') et un dispositif de commande de station de base (BSC') d'un système de radiocommunication par un trajet de transmission (US). Pour cette transmission, on réserve à la station de base (BTS') une capacité de transmission donnée sous la forme d'un certain nombre de créneaux temporels (ZS). Lors de l'établissement d'une communication de transmission vocale ou de données, on affecte à cette communication au moins un créneau temporel (ZS) issu de la capacité de transmission réservée et la transmission de données est effectuée par ce créneau entre la station de base (BTS') et le dispositif de commande de station de base (BSC'). Le nombre de créneaux temporels affectés (ZS) dépend du service transmis par la communication . Pendant la communication, on peut modifier selon les besoins et de façon dynamique le nombre de créneaux temporels affectés (ZS). Au terme de la communication, les créneaux temporels affectés (ZS) sont libérés et disponibles comme partie de la capacité de transmission réservée.
PCT/EP2001/014413 2000-12-20 2001-12-07 Procede de transmission de donnees dans un systeme de communication comportant differentes unites, systeme de station de base installe a cet effet et systeme de radiocommunication WO2002051176A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10063679A DE10063679B4 (de) 2000-12-20 2000-12-20 Verfahren zur Datenübertragung in einem verschiedene Einheiten umfassenden Funkkommunikationssystem und dafür eingerichtetes Basisstationssystem und Funkkommunikationssystem
EP00127990.0 2000-12-20
EP00127990 2000-12-20
DE10063679.9 2000-12-20

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WO2002051176A1 true WO2002051176A1 (fr) 2002-06-27

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PCT/EP2001/014413 WO2002051176A1 (fr) 2000-12-20 2001-12-07 Procede de transmission de donnees dans un systeme de communication comportant differentes unites, systeme de station de base installe a cet effet et systeme de radiocommunication

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420604A1 (fr) * 2002-11-16 2004-05-19 Siemens Mobile Communications S.p.A. Procédé de gestion de charge de trafic basé sur l'échange d'éléments d'information de capacités libres spécifiques au type service entre des contrôleurs de réseaux d'accès radio
EP1631010A1 (fr) * 2004-08-30 2006-03-01 Fujitsu Limited Transmission, d'une station de base, d'information concernant des paramètres utilisés dans le contrôle adaptatif de modulation (p. e. CQI) à un dispositif de niveau plus élevé
WO2007009290A1 (fr) * 2005-07-18 2007-01-25 Zte Corporation Procédé de partage de canal abis
WO2009027503A1 (fr) * 2007-08-31 2009-03-05 Ipwireless Inc Système de communication cellulaire, appareil et procédé pour la gestion de ressources de liaison terrestre

Citations (6)

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Publication number Priority date Publication date Assignee Title
US5502723A (en) * 1994-05-06 1996-03-26 Circuit Path Network Systems Method for assigning cell slots to one or more communication channels by mapping the channels to cell slots based on a one-to-one transformation
US5506848A (en) * 1994-06-22 1996-04-09 At&T Corp. Demand assignment system and method for mobile users in a community of interest
US5594727A (en) * 1994-09-19 1997-01-14 Summa Four, Inc. Telephone switch providing dynamic allocation of time division multiplex resources
US6052384A (en) * 1997-03-21 2000-04-18 Scientific-Atlanta, Inc. Using a receiver model to multiplex variable-rate bit streams having timing constraints
US6061784A (en) * 1996-12-26 2000-05-09 Nortel Networks Corporation Method and device for transferring data frames within a serial stream
WO2000074407A1 (fr) * 1999-05-28 2000-12-07 Nokia Inc. Appareil et procede associe destines a transmettre des paquets de donnees dans un systeme de radiocommunications

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502723A (en) * 1994-05-06 1996-03-26 Circuit Path Network Systems Method for assigning cell slots to one or more communication channels by mapping the channels to cell slots based on a one-to-one transformation
US5506848A (en) * 1994-06-22 1996-04-09 At&T Corp. Demand assignment system and method for mobile users in a community of interest
US5594727A (en) * 1994-09-19 1997-01-14 Summa Four, Inc. Telephone switch providing dynamic allocation of time division multiplex resources
US6061784A (en) * 1996-12-26 2000-05-09 Nortel Networks Corporation Method and device for transferring data frames within a serial stream
US6052384A (en) * 1997-03-21 2000-04-18 Scientific-Atlanta, Inc. Using a receiver model to multiplex variable-rate bit streams having timing constraints
WO2000074407A1 (fr) * 1999-05-28 2000-12-07 Nokia Inc. Appareil et procede associe destines a transmettre des paquets de donnees dans un systeme de radiocommunications

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1420604A1 (fr) * 2002-11-16 2004-05-19 Siemens Mobile Communications S.p.A. Procédé de gestion de charge de trafic basé sur l'échange d'éléments d'information de capacités libres spécifiques au type service entre des contrôleurs de réseaux d'accès radio
EP1657862A1 (fr) * 2002-11-16 2006-05-17 Siemens S.p.A. Procédé de réservation de ressources centralisé dynamique basé sur l'échange des paramètres de capacité spécifiques au type service dans un réseau multi-RAT
EP1631010A1 (fr) * 2004-08-30 2006-03-01 Fujitsu Limited Transmission, d'une station de base, d'information concernant des paramètres utilisés dans le contrôle adaptatif de modulation (p. e. CQI) à un dispositif de niveau plus élevé
WO2007009290A1 (fr) * 2005-07-18 2007-01-25 Zte Corporation Procédé de partage de canal abis
WO2009027503A1 (fr) * 2007-08-31 2009-03-05 Ipwireless Inc Système de communication cellulaire, appareil et procédé pour la gestion de ressources de liaison terrestre
US7948962B2 (en) 2007-08-31 2011-05-24 Wireless Technology Solutions Llc Cellular communication system, apparatus and method for management of backhaul resources
US8804743B2 (en) 2007-08-31 2014-08-12 Ip Wireless, Inc. Cellular communication system, apparatus and method for management of backhaul resources

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