TW200824334A - Communication systems - Google Patents

Communication systems Download PDF

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Publication number
TW200824334A
TW200824334A TW096127971A TW96127971A TW200824334A TW 200824334 A TW200824334 A TW 200824334A TW 096127971 A TW096127971 A TW 096127971A TW 96127971 A TW96127971 A TW 96127971A TW 200824334 A TW200824334 A TW 200824334A
Authority
TW
Taiwan
Prior art keywords
transmission
period
transmitting
transmit
window
Prior art date
Application number
TW096127971A
Other languages
English (en)
Chinese (zh)
Inventor
Michael John Beems Hart
Yue-Feng Zhou
Dorin Viorel
Chen-Xi Zhu
Michiharu Nakamura
Masahiro Watanabe
Hiroshi Fujita
Makoto Yoshida
Original Assignee
Fujitsu Ltd
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 GB0616474A external-priority patent/GB2440981A/en
Priority claimed from GB0622124A external-priority patent/GB2443466A/en
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of TW200824334A publication Critical patent/TW200824334A/zh

Links

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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2692—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • 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
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
TW096127971A 2006-08-18 2007-07-31 Communication systems TW200824334A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0616474A GB2440981A (en) 2006-08-18 2006-08-18 Wireless multi-hop communication system
GB0622124A GB2443466A (en) 2006-11-06 2006-11-06 Relay station for multi-hop communication system

Publications (1)

Publication Number Publication Date
TW200824334A true TW200824334A (en) 2008-06-01

Family

ID=38800735

Family Applications (2)

Application Number Title Priority Date Filing Date
TW096127971A TW200824334A (en) 2006-08-18 2007-07-31 Communication systems
TW099100661A TW201028024A (en) 2006-08-18 2007-07-31 Communication systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW099100661A TW201028024A (en) 2006-08-18 2007-07-31 Communication systems

Country Status (6)

Country Link
US (2) US20080043712A1 (enExample)
EP (2) EP2136587A3 (enExample)
JP (2) JP4985218B2 (enExample)
KR (2) KR100937569B1 (enExample)
CN (1) CN101820309A (enExample)
TW (2) TW200824334A (enExample)

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Also Published As

Publication number Publication date
KR20090116675A (ko) 2009-11-11
CN101820309A (zh) 2010-09-01
JP2010063125A (ja) 2010-03-18
TW201028024A (en) 2010-07-16
KR100937569B1 (ko) 2010-01-19
KR100988663B1 (ko) 2010-10-18
US20100142436A1 (en) 2010-06-10
US20080043712A1 (en) 2008-02-21
JP4985218B2 (ja) 2012-07-25
EP2136587A3 (en) 2012-05-02
JP2008048425A (ja) 2008-02-28
EP1890447A2 (en) 2008-02-20
KR20080016509A (ko) 2008-02-21
EP2136587A2 (en) 2009-12-23

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