EP1224771A2 - Procede, reseau et station de commande pour la commande bilaterale alternee de systemes radio de normes differentes sur la meme bande de frequence - Google Patents

Procede, reseau et station de commande pour la commande bilaterale alternee de systemes radio de normes differentes sur la meme bande de frequence

Info

Publication number
EP1224771A2
EP1224771A2 EP01974161A EP01974161A EP1224771A2 EP 1224771 A2 EP1224771 A2 EP 1224771A2 EP 01974161 A EP01974161 A EP 01974161A EP 01974161 A EP01974161 A EP 01974161A EP 1224771 A2 EP1224771 A2 EP 1224771A2
Authority
EP
European Patent Office
Prior art keywords
radio interface
interface standard
radio
stations
frequency band
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.)
Ceased
Application number
EP01974161A
Other languages
German (de)
English (en)
Inventor
Bernard Walke
Stefan Mangold
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.)
Pendragon Wireless LLC
Original Assignee
Koninklijke Philips Electronics NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7652284&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1224771(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP1224771A2 publication Critical patent/EP1224771A2/fr
Ceased 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Master-slave selection or change arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • the invention relates to a method for the mutual control of radio systems of different standards in the same frequency band.
  • a radio system for the wireless transmission of information may only use standard transmission powers.
  • the national regulatory authority determines on which frequencies, with which transmission power and according to which radio interface standard a radio system may transmit.
  • ISM frequency bands Industrial Scientific Medical
  • radio systems transmit according to different radio interface standards in the same frequency band.
  • One example is the US radio system IEEE 802.1 la and the European ETSI BRAN HiperLAN / 2. Both radio systems transmit in the same frequency bands between 5.15 GHz and 5.875 GHz with almost the same radio transmission method, but different transmission protocols.
  • Radio systems of broadband LANs of the radio interface standards ETSI BRAN HiperLAN / 2 and IEEE 802.1 la use the same radio transmission method, a 64-carrier OFDM method with adaptive modulation and coding. Almost the same modulation and coding methods (Link Adaptation, LA) are defined for both standards.
  • ETSI BRAN HiperLAN / 2 uses a centrally controlled, reservation-based procedure, in which a radio station takes on the role of a central entity that coordinates the radio resources.
  • This central radio station (Access Point, AP), which may be the access point to the wide area network, periodically signals the MAC frame structure every 2ms depending on the needs of AP and the associated stations.
  • AP Access Point
  • the IEEE 802.1 la standard describes a non-reservation-based CSMA / CA procedure (Carrier Sense Multiple Access / Collision Avoidance), in which all Radio stations listen to the medium and assume that the channel is unused for a minimum period (Short Inter Frame Space, SIFS) before 802.1 la MAC frames, i.e. user data packets, are sent if necessary.
  • SIFS Short Inter Frame Space
  • the method is well suited for self-organizing ad hoc networks, but requires positive acknowledgments of all packets.
  • Quality of service measures point coordination function, PCF
  • Fig. 2 shows an example of the time lapse for media access with IEEE 802.1 la.
  • a station must transmit an RTS packet (Ready To Send) and wait for a CTS (Clear To Send) packet from the addressed station before it can transmit user data. All other stations within radio range set a time monitoring (Network Allocation Vector, NAV) and only transmit again when the addressed station has sent an acknowledgment (ACK).
  • NAV Network Allocation Vector
  • Broadband LANs according to the HiperLAN / 2 and 802.1 la standards will operate in the same frequency band between 5.15 and 5.825 GHz in the future.
  • the broadband LANs work with transmitter power control (TPC), adaptive radio transmission methods and the dynamic selection of frequencies (Dynamic Frequency Selection, DFS) in order to minimize the mutually interfering influences, but these methods do not allow the optimal use and distribution of the radio channels to the stations broadcasting according to different standards. It is not possible to guarantee the quality of service required for multimedia applications in the event of interference by your own stations or stations of other systems. In the event of mutual interference, systems work inefficiently and occupy one even at low transmission rates
  • an interface control protocol method for a radio system which has at least one frequency band which is provided for the mutual use of a first and a second radio interface standard, the radio system having stations which in each case according to a first radio interface standard and / or work according to a second radio interface standard, a control station being provided which controls the mutual use of the frequency band.
  • the invention is based on the idea of providing a cross-standard exchange of implicit or also explicit control information in systems with the same radio transmission method but different radio transmission protocols. This enables simple and efficient use of a radio channel by means of several radio interface standards.
  • the radio system has one or more stations.
  • the stations can e.g. A wireless local area network computer. These stations can e.g. each only designed for operation according to the first or the second radio interface standard. However, it is also possible that stations can work according to both the first and the second radio interface standard.
  • a first number of stations preferably forms a local wireless network according to a first radio interface standard and a second number of stations forms a wireless network according to a second radio interface standard.
  • the first radio interface standard can e.g. the HiperLAN2 standard and the second radio interface standard the IEEE 802.11 a standard.
  • the frequency band from 5.15 GHz to 5.825 GHz is intended for these two standards.
  • a control station which controls the mutual use of the common frequency band by the two radio interface standards.
  • the control station is preferably a station which can operate both according to the first radio interface standard and according to the second radio interface standard.
  • the mutual use of the common frequency band can be controlled in various ways. For example, it is possible to provide certain predeterminable time intervals for the use of the first and the second radio interface standard and to alternately assign the frequency band to the first radio interface standard and then to the second radio interface standard in a kind of time division multiplex. However, it is advantageous to make the allocation using adaptive protocols. As a result, the common radio channel can be used more effectively, in particular if the need for transmission capacity varies according to the first and second radio interface standards.
  • the control station is provided, on the one hand, for controlling access to the frequency band for stations which operate according to the first radio interface standard.
  • the control station performs the function of the central controller (access point, AP) provided in accordance with this standard.
  • the stations of the HiperLAN / 2 standard each send a capacity request to the control station and the control station assigns transmission capacity to the stations.
  • the control station is intended to enable the common frequency band for access by stations which operate according to the second radio interface standard when stations which operate according to the first radio interface standard do not request access to the frequency band ,
  • the first radio interface standard is thus prioritized over the second radio interface standard.
  • the release of the common frequency band for the second radio interface standard can e.g. explicitly by sending control information to the stations of the second radio interface standard.
  • the point coordinator provided according to the IEEE 802.11 standard acts as a central control station and the mutual access of stations of the first and the second
  • the point coordinator would e.g. periodically another radio interface standard, e.g. the HiperLAN / 2 standard, the common frequency band.
  • another radio interface standard e.g. the HiperLAN / 2 standard
  • Control in that the control station specifies the respective period of time during which the stations operating according to the second radio interface standard may use the common frequency band.
  • the definition of the time period can advantageously take place in that the control station sends a broadcast signal which informs the stations of a time period during which the frequency band can be used by stations which operate according to the second radio interface standard.
  • the invention has the advantage that when radio systems are operated in phases in which no information is transmitted or received by a radio station according to a first radio interface standard, the additional transmission of Information according to another radio interface standard is possible, so that access to the radio channel can be controlled by competing radio systems. It is possible for a first radio station that operates according to a first radio interface standard to additionally carry out certain functions described in a second radio interface standard, with the start and duration of the phase by the first radio station or a coordinating further radio station that transmits according to the first radio interface standard that may be used for transmission by the first station according to the second radio interface standard. Depending on the radio interface standard, the start and duration can only be roughly defined, whereby the relevant standards are sometimes or regularly violated.
  • the first station can preferably end the phase during which it transmits according to the second radio interface standard at any time, regardless of the resulting interference with stations according to the second radio interface standard.
  • the first radio station can also carry out functions which cause radio systems according to the second radio interface standard or radio systems according to the first radio interface standard to interpret the radio channel as disturbed and occupy another radio channel for its own operation.
  • the efficient sharing of a radio channel by different radio systems can be achieved using a suitable control protocol method.
  • a radio interface control protocol method enables a first station of a radio system according to the first radio interface standard to control the times of access to the radio channel by other stations. For this purpose, it must perform the functions described in another second radio interface standard in addition to the functions defined by its own first radio interface standard at times at which stations do not transmit according to the first radio interface standard and do not expect any standard information from the first station, the first station or a further one Station specifies the duration during which the first station may transmit in accordance with the second radio interface standard.
  • the duration of operation according to the second radio interface standard does not have to be exact, but can only be approximately determined.
  • the first station can terminate the use of the radio interface according to the second radio interface standard regardless of the resulting interference in stations which transmit according to the second radio interface standard by transmission according to the first radio interface standard.
  • the object of the invention is solved for the network by a wireless
  • Network which has at least one frequency band which is provided for the mutual use of a first and a second radio interface standard, the wireless network having stations which each work according to a first radio interface standard and / or according to a second radio interface standard, a control station being provided, which controls the mutual use of the frequency band.
  • FIG. 1 shows the frame structure according to the ETSI BRAN HiperLAN / 2 standard
  • FIG. 2 shows a schematic representation of the access to a radio channel
  • FIG. 3 shows two wireless local area networks according to a first and a second radio interface standard.
  • Fig. 1 shows the structure of the HiperLAN / 2 MAC frame.
  • Fig. 2 shows schematically the media access in systems that according to the
  • the quality of service (packet delay, transmission rate, etc.) of individual connections can be individually controlled by means of the central control by the access point (AP), which generates the MAC frame periodically and thereby transmits the data of the broadcast phase ,
  • AP access point
  • the AP could regain control very soon, in which the HiperLAN / 2 standard-compliant transmission does not suppress the broadcast phase but sends it.
  • the PCF function of the 802.11 standard could be used to temporarily (periodically) make the radio channel available to HiperLAN / 2 systems.
  • the mutual control of radio systems of different standards proposed here and discussed using the example of the broadband LANs ETSI BRAN HiperLAN / 2 and IEEE 802.1 la can, in a heterogeneous environment in which different radio systems transmit at the same time in close proximity in the same spectrum, a decentrally controlled adaptivity regarding guarantee the transmission capacity available in the respective systems to cope with the current traffic offer, the required quality of service and the current usage environment.
  • different radio systems can be made compatible in the sense that they constructively coexist in the same frequency band and can thereby provide services that require a high quality of service.
  • the radio spectrum is used much more efficiently; without using the new method, this is only possible with exclusively used radio channels
  • 3 shows schematically two wireless local area networks.
  • a first wireless local area network has three stations 10, 11 and 12. These three stations 10, 11, 12 and 13 operate according to a first radio interface standard A, e.g. according to the HiperLAN2 standard.
  • a second wireless local area network has four stations 14, 15, 16 and 17. These four stations 14, 15, 16 and 17 operate according to a second radio interface standard B, e.g. according to the IEEE802.1 la standard.
  • the stations can e.g. Computer with a radio interface.
  • Communication between the individual stations is wireless, e.g. by radio.
  • the frequency band between 5.15 GHz and 5.825 GHz is intended for wireless local networks according to the HiperLAN / 2 and IEEE 802.1 la standards.
  • a central control station 13 is provided which controls the mutual access of the first wireless network and the second wireless network to the common frequency band.
  • This broadcast message preferably contains time information which tells stations 14 to 17 of the IEEE 802.11 standard how long they can use the common frequency band.
  • the control station 13 can also carry out functions according to the IEEE 802.1 la standard, for example also for data transmission according to the IEEE 802.1 la standard.
  • the stations 10 to 12 of the first wireless network are HiperLAN / 2 stations
  • the control station 13 preferably also operates as the central station (access point) of the HiperLAN2 network and coordinates their radio resources. With Hiperlan / 2 systems, it is planned in advance at what time the stations may transmit.
  • HiperLAN / 2 systems have a central facility (access point, AP) that receives the capacity requirements from the various stations and accordingly allocates capacity.
  • the central control station 13 is preferably also provided to perform the function of the access point of the HiperLAN / 2 standard.
  • the central control station 13 then periodically signals the MAC frame structure every 2 ms as required by the individual stations of the HiperLAN2 network.
  • the function of the access point and the function of mutually controlling the access of the first wireless network and the second wireless network to the common frequency band are implemented in separate stations. Then, however, a data exchange is necessary between these separate stations with regard to the duration during which the frequency band may be used by the first or the second radio interface standard.
  • the point coordinator provided according to the IEEE 802.11 standard acts as a central control station and the mutual access of stations of the first and the second
  • the point coordinator would e.g. periodically another radio interface standard, e.g. the HiperLAN / 2 standard, the common frequency band.
  • another radio interface standard e.g. the HiperLAN / 2 standard

Landscapes

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

Abstract

L'invention concerne un procédé de protocole de commande d'interface pour un système radio, présentant au moins une bande de fréquence, conçu pour l'utilisation bilatérale alternée d'une première et d'une deuxième norme d'interface radio. Ce système radio comprend plusieurs stations fonctionnant chacune selon une première norme d'interface radio et/ou une deuxième norme d'interface radio, une station de commande étant prévue pour commander l'utilisation bilatérale alternée de la bande de fréquence.
EP01974161A 2000-08-08 2001-08-08 Procede, reseau et station de commande pour la commande bilaterale alternee de systemes radio de normes differentes sur la meme bande de frequence Ceased EP1224771A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10039532A DE10039532B4 (de) 2000-08-08 2000-08-08 Wechselseitige Steuerung von Funksystemen unterschiedlicher Standards im gleichen Frequenzband
DE10039532 2000-08-08
PCT/EP2001/009258 WO2002013457A2 (fr) 2000-08-08 2001-08-08 Procede, reseau et station de commande pour la commande bilaterale alternee de systemes radio de normes differentes sur la meme bande de frequence

Publications (1)

Publication Number Publication Date
EP1224771A2 true EP1224771A2 (fr) 2002-07-24

Family

ID=7652284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01974161A Ceased EP1224771A2 (fr) 2000-08-08 2001-08-08 Procede, reseau et station de commande pour la commande bilaterale alternee de systemes radio de normes differentes sur la meme bande de frequence

Country Status (5)

Country Link
US (1) US7016676B2 (fr)
EP (1) EP1224771A2 (fr)
JP (1) JP2004506381A (fr)
DE (1) DE10039532B4 (fr)
WO (1) WO2002013457A2 (fr)

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WO2002041530A1 (fr) * 2000-11-16 2002-05-23 Sony Corporation Appareil de traitement d'informations et appareil de communication
AU2002301156B2 (en) * 2001-09-28 2004-09-02 Samsung Electronics Co., Ltd. Apparatus And Method For Accessing Private Wireless Internet Packet Data Communication System
US6687259B2 (en) * 2002-06-05 2004-02-03 Meshnetworks, Inc. ARQ MAC for ad-hoc communication networks and a method for using the same
CN1679017B (zh) 2002-09-03 2010-05-05 汤姆森特许公司 提供端点站之间保留连接的装置、方法和以太网网络系统
GB2398965B (en) 2003-02-27 2005-05-18 Toshiba Res Europ Ltd Methods of controlling transmission power levels in air interface channels
BRPI0411919A (pt) * 2003-06-30 2006-08-15 Thomson Licesing S A método e equipamento para mapear pacotes qos priorizados para canais qos parametrizados e vice versa
PL1687941T3 (pl) * 2003-11-19 2015-12-31 Koninklijke Philips Nv Sposób dostępu do medium przez urządzenie wielokanałowe
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MY140798A (en) * 2005-06-09 2010-01-15 Samsung Electronics Co Ltd Method and apparatus for receiving data with down compatibility in high throughput wireless network
CN100403826C (zh) * 2006-02-27 2008-07-16 华为技术有限公司 通用公共无线接口传输多体制无线业务iq数据的方法

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Also Published As

Publication number Publication date
WO2002013457A2 (fr) 2002-02-14
WO2002013457A3 (fr) 2002-05-23
US20020168979A1 (en) 2002-11-14
DE10039532A1 (de) 2002-02-28
JP2004506381A (ja) 2004-02-26
DE10039532B4 (de) 2006-05-11
US7016676B2 (en) 2006-03-21

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