CA2458192A1 - Multi-hop communication system, radio control station, radio station and multi-hop communication method - Google Patents

Multi-hop communication system, radio control station, radio station and multi-hop communication method Download PDF

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Publication number
CA2458192A1
CA2458192A1 CA 2458192 CA2458192A CA2458192A1 CA 2458192 A1 CA2458192 A1 CA 2458192A1 CA 2458192 CA2458192 CA 2458192 CA 2458192 A CA2458192 A CA 2458192A CA 2458192 A1 CA2458192 A1 CA 2458192A1
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CA
Canada
Prior art keywords
radio
station
communication route
control signal
communication
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.)
Granted
Application number
CA 2458192
Other languages
French (fr)
Other versions
CA2458192C (en
Inventor
Shinji Takeda
Atsushi Fujiwara
Hitoshi Yoshino
Toru Otsu
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.)
NTT Docomo Inc
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NTT Docomo Inc
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 NTT Docomo Inc filed Critical NTT Docomo Inc
Publication of CA2458192A1 publication Critical patent/CA2458192A1/en
Application granted granted Critical
Publication of CA2458192C publication Critical patent/CA2458192C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/302—Route determination based on requested QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The multi-hop communication system according to the present invention is configured by a radio control station 1 connected to a core network, and radio stations 21, 22, 31-33.
The radio control station 1 has a control signal TX/RX unit 12 which transmits/receives the control signal, an information signal TX/RX unit 13 which transmits/receives the information signal , and a communication channel controller 15 which transmits a "usage notification" indicating usage of communication channels managed by the radio control station 1 to the radio stations 21, 22, 31-33 using the control signal. The radio station has a control signal TX/RX unit 42 which transmits/receives the control signal, and an information signal TX/RX unit 43 which transmits/receives the information signal.

Claims (19)

1. A multi-hop communication system configured by a radio control station connected to a core network and radio stations that relay a signal transmitted from other radio station, wherein, the radio control station comprises:
a control signal transmission/reception unit configured to transmit/receive a control signal for conducting communication with the radio station;
an information signal transmission/reception unit configured to transmit/receive an information signal; and a communication route determiner configured to determine a communication route for the control signal and a communication route for the information signal by different independent processes, and the radio station comprises:

a control signal transmission/reception unit configured to transmit/receive the control signal; and an information signal transmission/reception unit configured to transmit/receive the information signal.
2. A multi-hop communication system configured by a radio control station connected to a core network and radio stations that relay a signal transmitted from other radio station, wherein, the radio control station comprises:
a control signal transmission/reception unit configured to transmit/receive a control signal for conducting communication with the radio station;
an information signal transmission/reception unit configured to transmit/receive an information signal; and a communication route determiner configured to determine a communication route for the control signal by a different independent process from determination of a communication route for the information signal, and the radio station comprising.
a control signal transmission/reception unit configured to transmit/receive the control signal; and an information signal transmission/reception unit configured to transmit/receive the information signal.
3. A radio control station connected to a care network and controls communication by a radio station that relays a signals transmitted by other radio station, comprises:
a control signal transmission/reception unit configured to transmit/receive a control signal for conducting communication with the radio station;
an information signal transmission/reception unit configured to transmit/receive an information signal; and a communication route determiner configured to determine a communication route for the control signal.
4. A radio control station according to claim 3, the communication route determiner determines a communication route for the information signal by a different independent process from the determination of the communication route for the control signal.
5. A radio control station according to claim 3 or claim 4, the communication route determiner transmits a communication route acquisition request to the radio station for acquisition of a communication route, and the communication route determiner determines a communication route based on a response to the communication route acquisition request transmitted by the radio station.
6. A radio control station as in one of claims 3-5, further comprising a communication channel controller configured to transmit a usage notification that indicates usage of a communication channel handled by the radio control station.
7. A radio control station as in one of claims 3-6, the communication route determiner determines a communication route to the radio station and transmits a communication route determination notification that notifies the communication route to a radio station located on the communication route.
8. A radio control station according to claim 7, the communication route determiner assigns a communication channel to be used in the radio station located on the determined communication route.
9. A radio station conducting communication via a radio control station connected to a core network, comprising:
a control signal transmission/reception unit configured to transmit/receive the control signal;
an information signal transmission/reception unit configured to transmit/receive the information signal; and a communication route determiner configured to determine a communication route for the control signal and a communication route for the information signal by different independent processes.
10. A radio station according to claim 9, the communication route determiner transmits a usage inquiry to the radio station for inquiring usage of a communication channel handled by the radio control station and transmits/receives the information signal according to a usage notification that is a response to the usage inquiry.
11. A radio station according to claim 9 or claim 10, further comprising a decision unit configured to decide whether or not communication is directly conducted with the radio control station based an a reception level of the control signal received by the control signal transmission/reception unit.
12. A radio station according to claim 11, the decision unit changes a threshold for the reception level according to a transmission speed of the information signal and to decide whether or not communication is directly conducted with the radio control station based on a result of comparison of the reception level and the threshold.
13. A radio station as in one of claims 9-12, further comprising a first relay controller configured to transmit a relay control signal to other station for requesting a relay of the information signal and to set a communication route to the radio control station via the other station according to a response relay control signal that is a response to the relay control signal.
14. A radio station according to claim 13, further comprising a communication route selector configured to select a radio station satisfying a prescribed condition regarding a communication state if a plurality of the other radio station transmitted the response relay control signal.
15. A radio station as in one of claims 9-14, further comprising a second relay controller configured to receive a relay control signal requesting a relay of the information signal from other station, to transmit a response relay control signal that is a response to the relay control signal and to set a communication route from the other radio station to the radio control station.
16. A radio station according to claim 15, the second relay controller transmits the response relay control signal notifying ability of the relay of the information signal based on a reception level of the received response relay control signal.
17. A radio station as in one of claims 14-16, wherein an information indicating a number of hops from the other radio station to the radio control station is included in the response relay control signal, and the communication route selector selects a radio station based the number of hops included in the response relay control signal.
18. A radio station as in one of claims 14-16, wherein an information indicating an interference level is included in the response relay control signal, and the communication route selector selects a radio station based the interference level included in the response relay control signal.
19. A multi-hop communication method used in a system configured by a radio control station connected to a core network and radio stations that relay a signal transmitted from other radio station, comprising:
a usage inquiry step that the radio station transmits a usage inquiry for inquiring usage of a communication channel handled by the radio control station using a control signal for conducting communication with the radio control station;
a communication route determination step that the radio control station determines a communication route for the control signal and a communication route for the information signal by different independent processes;
a usage notification step that the radio control station transmits a usage notification indicating usage of the communication channel handled by the radio control station; and an information signal transmission step that the radio station and the radio control station transmit/receive the information signal using the communication route according to the usage notification.
CA 2458192 2003-02-21 2004-02-20 Multi-hop communication system, radio control station, radio station and multi-hop communication method Expired - Fee Related CA2458192C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003044945A JP4027818B2 (en) 2003-02-21 2003-02-21 Multihop communication system, radio control station, radio station, and multihop communication method
JPP2003-044945 2003-02-21

Publications (2)

Publication Number Publication Date
CA2458192A1 true CA2458192A1 (en) 2004-08-21
CA2458192C CA2458192C (en) 2010-08-10

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Family Applications (1)

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CA 2458192 Expired - Fee Related CA2458192C (en) 2003-02-21 2004-02-20 Multi-hop communication system, radio control station, radio station and multi-hop communication method

Country Status (6)

Country Link
US (1) US7619998B2 (en)
EP (1) EP1450522B1 (en)
JP (1) JP4027818B2 (en)
CN (1) CN1305234C (en)
AU (1) AU2004200692B2 (en)
CA (1) CA2458192C (en)

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Also Published As

Publication number Publication date
EP1450522A2 (en) 2004-08-25
EP1450522A3 (en) 2008-04-09
JP2004254237A (en) 2004-09-09
EP1450522B1 (en) 2012-01-25
US7619998B2 (en) 2009-11-17
US20040166853A1 (en) 2004-08-26
CN1523787A (en) 2004-08-25
CN1305234C (en) 2007-03-14
AU2004200692B2 (en) 2005-06-30
CA2458192C (en) 2010-08-10
AU2004200692A1 (en) 2004-09-09
JP4027818B2 (en) 2007-12-26

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