EP1308061A2 - Procede d'affectation de canaux de transmission dans un systeme de radiocommunication - Google Patents

Procede d'affectation de canaux de transmission dans un systeme de radiocommunication

Info

Publication number
EP1308061A2
EP1308061A2 EP01964896A EP01964896A EP1308061A2 EP 1308061 A2 EP1308061 A2 EP 1308061A2 EP 01964896 A EP01964896 A EP 01964896A EP 01964896 A EP01964896 A EP 01964896A EP 1308061 A2 EP1308061 A2 EP 1308061A2
Authority
EP
European Patent Office
Prior art keywords
transmission channel
determined
chv
transmission
quality condition
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Withdrawn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
EP01964896A
Other languages
German (de)
English (en)
Inventor
Egon Schulz
Bernhard Wegmann
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
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 filed Critical Siemens AG
Publication of EP1308061A2 publication Critical patent/EP1308061A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/04—Traffic adaptive resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • dynamic channel allocation in radio communication systems is one of the most important measures for managing system resources.
  • a radio communication system in which dynamic channel allocation is used there is no fixed allocation of subscriber frequency bands to base stations. Instead, subscriber frequency bands are assigned adaptively to base stations. This means that the assignment is adapted to the respective system status with regard to connection requests and multiple access interference.
  • the goal of dynamic channel allocation is to strike a balance between meeting interference conditions and maximizing system capacity. The maximization of the system capacity is coupled with a minimization of the reuse distance of subscriber frequency bands, available subscriber frequency bands being recycled in a narrower grid.
  • the object on which the present invention is based consists in a method for the dynamic allocation of transmission channels by means of which co-channel interference and the blocking probability for transmission channels are minimized ⁇ t> P 1
  • a first phase the set of all available transmission channels is divided into subsets, which are assigned to radio cells or communication services. Such a subdivision can be made adaptively with regard to a changing traffic density.
  • transmission channels are assigned to connections, with a change in the allocation resulting from a connection setup or a handover.
  • the second phase is significantly more time-critical, while in the first phase there is a much higher information compression for channel allocation.
  • FIG. 1 shows a schematic illustration of a radio communication system with a plurality of radio cells
  • FIG. 2 shows a schematic illustration of a base transceiver station connected to a plurality of subscriber stations and having an adaptive antenna device
  • FIG. 4 shows a schematic representation of the structure of an allocation table.
  • the radio communication system shown in Figure 1 has at least one mobile switching device MSC, which is connected to a plurality of base stations BS.
  • the mobile switching center MSC primarily performs switching tasks and provides access to a landline network, not shown, while the base stations BS are primarily intended for the management of radio resources.
  • Each base station BS has at least one base station control unit BSC, which is coupled to a plurality of base transceiver stations BTS.
  • a base transceiver station BTS can establish voice or data connections to subscriber stations TSI to TSk, TSk + 1 to TSn, TSt to TSu via a radio interface.
  • transmission channels CH1 to CHm, CHm + 1 to CHr, CHs to CHv are made available on the radio interface.
  • An operation and maintenance center (not shown in more detail) takes control and maintenance functions for predeterminable areas within the
  • Radio communication system true.
  • the functionality and the structure of the radio communication system shown in FIG. 1 can in particular also be transferred to subscriber access networks with a wireless subscriber line.
  • FIG. 2 schematically shows a base transceiver station BTS which is connected to subscriber stations TSI to TS3 via transmission channels CH1 to CH6 made available on the radio interface.
  • the base transceiver station BTS has an adaptive antenna device, the antenna characteristics of which are set in such a way that the radiation of the transmission power is concentrated on lobe-shaped areas BEAM1 to BEAM3 - hereinafter called antenna lobes.
  • the antenna beams BEAM1 to BEAM3 are aligned with the subscriber stations TSI to TS3. For this purpose, a determination of the directions up to f s from the base transceiver station BTS to the subscriber stations TSI to TS3 is necessary.
  • the directions ⁇ to f 3 between the base transceiver station BTS and the subscriber stations TSI to TS3 are usually determined as angles of incidence ⁇ i to ⁇ . If one of the subscriber stations TSI to TS3 changes its position relative to the base transceiver station BTS, the respective antenna lobe BEAM1 to BEAM3 is tracked in accordance with the movement of the subscriber station.
  • the transmission channel is selected for which the lowest signal-to-interference ratio of all available transmission channels and taking into account the direction from the base transceiver station to the relevant subscriber station was determined.
  • it can be advantageous, for example, to determine the intercell interference as a transmission channel-specific parameter. While a connection is being set up, other transmission channel-specific parameters can be selected for a channel allocation than when establishing a connection.
  • the transmission quality is continuously checked using signal-to-noise ratio measurements. As soon as the quality has deteriorated to such an extent that the value falls below a predefined threshold value, quality measurements are also carried out for other transmission channels that are possible according to step 3. If other control options, such as power control, are no longer sufficient to meet the required
  • a transmission channel change is initiated via the allocation process. Furthermore, the quality conditions for the checks of the transmission channel-specific parameters when establishing a connection and when a connection is established can be identical in the sense of a simple implementation.
  • the occupancy state of the transmission channels is advantageously stored in an allocation table, the structure of which is shown schematically in FIG. Similar to the transmission channel-specific parameters, the allocation table is updated and checked at regular intervals.
  • the structure of the allocation table is shown three-dimensionally in FIG. 4 and has the axes time slot, code / frequency and angle of incidence.
  • the structure of the allocation table makes radio communication systems with time, code / frequency and space ⁇ ⁇ N>) P * P 1 cn ono cn o Cn
  • P P p P, ⁇ 0 j P O ⁇ . ⁇ CO ⁇ P 3 Pi O P- cn P- ET ⁇ p. ⁇ N p 0 "0 o Hi E er ⁇ P- 0 N rt

Landscapes

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

Abstract

L'invention concerne un procédé d'affectation de canaux de transmission dans un système de radiocommunication, dans lequel des signaux affectés à des canaux de transmission (CH1-CHv) sont reçus ou transmis par un émetteur-récepteur de base (BTS). Le sens (r1-r3) à partir de l'émetteur-récepteur de base (BTS) vers une station d'abonné (TS1-TSu) est déterminé. Au moins deux canaux de transmission (CHr-CHv) sont présélectionnés pour une affectation d'un canal de transmission, en fonction du sens déterminé (r1-r3). Des mesures de canaux radio sont effectuées pour la détermination d'au moins un paramètre de canal de transmission (M1-Mg). En fonction du paramètre spécifique du canal de transmission déterminé (M1-Mg), un canal de transmission présélectionné (CHt) est sélectionné en vue d'un échange vocal et/ou d'informations de données entre l'émetteur-récepteur de base (BTS) et la station d'abonné (TS1-TSu).
EP01964896A 2000-08-10 2001-08-10 Procede d'affectation de canaux de transmission dans un systeme de radiocommunication Withdrawn EP1308061A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10039209 2000-08-10
DE2000139209 DE10039209A1 (de) 2000-08-10 2000-08-10 Verfahren zur Zuteilung von Übertragungskanälen in einem Funk-Kommunikationssystem
PCT/DE2001/003077 WO2002013394A2 (fr) 2000-08-10 2001-08-10 Procede d'affectation de canaux de transmission dans un systeme de radiocommunication

Publications (1)

Publication Number Publication Date
EP1308061A2 true EP1308061A2 (fr) 2003-05-07

Family

ID=7652071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01964896A Withdrawn EP1308061A2 (fr) 2000-08-10 2001-08-10 Procede d'affectation de canaux de transmission dans un systeme de radiocommunication

Country Status (4)

Country Link
EP (1) EP1308061A2 (fr)
AU (1) AU2001285705A1 (fr)
DE (1) DE10039209A1 (fr)
WO (1) WO2002013394A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360885A1 (de) * 2003-12-23 2005-04-14 Siemens Ag Verfahren zum Betrieb einer mobilen Station für ein Funkkkom-munikationssystem, mobile Station sowie Einheit für ein Funk-kommunikationssystem
CN1968320A (zh) * 2006-04-27 2007-05-23 华为技术有限公司 实现语音播放业务的方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2032325C (fr) * 1990-12-14 1998-07-07 Leo Strawczynski Transfert intracellulaire des appels dans les systemes de radiocommunication a affectation dynamique des canaux
TW351886B (en) * 1993-09-27 1999-02-01 Ericsson Telefon Ab L M Using two classes of channels with different capacity
RU2150788C1 (ru) * 1994-06-23 2000-06-10 Телефонактиеболагет Л М Эрикссон Способ переключения каналов связи в ячейке сотовой системы связи с адаптивными антенными решетками
US6108321A (en) * 1996-06-28 2000-08-22 Lucent Technologies Inc. Interference based dynamic channel assignment
US6233456B1 (en) * 1996-09-27 2001-05-15 Qualcomm Inc. Method and apparatus for adjacent coverage area handoff in communication systems
US5886988A (en) * 1996-10-23 1999-03-23 Arraycomm, Inc. Channel assignment and call admission control for spatial division multiple access communication systems
US6154655A (en) * 1998-03-05 2000-11-28 Lucent Technologies Inc. Flexible channel allocation for a cellular system based on a hybrid measurement-based dynamic channel assignment and a reuse-distance criterion algorithm
DE19907476C1 (de) * 1999-02-16 2001-02-08 Hertz Inst Heinrich Verfahren zur Steuerung und dynamischen Anpassung der Richtcharakteristik von linearen Antennenarrays bei der räumlichen Trennung von Signalen
DE19958891B4 (de) * 1999-12-07 2010-04-22 Nokia Siemens Networks Gmbh & Co.Kg Verfahren zur Ressourcenzuteilung in einem Funk-Kommunikationssystem unter Verwendung adaptiver Antennen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0213394A3 *

Also Published As

Publication number Publication date
AU2001285705A1 (en) 2002-02-18
DE10039209A1 (de) 2002-02-21
WO2002013394A3 (fr) 2002-04-25
WO2002013394A2 (fr) 2002-02-14

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Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG

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