BR112012009276A2 - aquisição de tempo e frequência e rastreamento para sistemas sem dio ofdma - Google Patents
aquisição de tempo e frequência e rastreamento para sistemas sem dio ofdmaInfo
- Publication number
- BR112012009276A2 BR112012009276A2 BR112012009276A BR112012009276A BR112012009276A2 BR 112012009276 A2 BR112012009276 A2 BR 112012009276A2 BR 112012009276 A BR112012009276 A BR 112012009276A BR 112012009276 A BR112012009276 A BR 112012009276A BR 112012009276 A2 BR112012009276 A2 BR 112012009276A2
- Authority
- BR
- Brazil
- Prior art keywords
- base station
- track
- timing
- tracking
- wireless systems
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 abstract 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
-
- 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
- H04L27/2657—Carrier synchronisation
-
- 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
- H04L27/2662—Symbol synchronisation
-
- 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
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70702—Intercell-related aspects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
Abstract
aquisição de tempo e frequência e rastreamento para sistemas sem fio ofdma. a obtenção de uma referência de temporização em comunicação sem fio é facilitada quando se deseja comunicar com uma estação base servidora fraca (tal como um nó b evoluído) na presença de uma estação base de interferência mais forte. o ue pode rastrear uma temporização de estação base de interferência mais forte, ou o ue pode rastrear uma temporização que é derivada por um pdp composto a partir de múltiplas estações base; o pdp com posto pode ser construído pelo ajuste de pdps de estação base individuais de acordo com um esquema de ponderação. a temporização obtida de tal forma pode ser utilizada para estimativa do canal de estação base de interferência e cancelamento de sinais de interferência a partir da estação base. também pode ser utilizado para estimar o canal da estação base servidora depois da adição de um backoff. o ue pode rastrear uma frequência de estação base de interferência mais forte, ou o ue pode rastrear uma frequência composta.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25379009P | 2009-10-21 | 2009-10-21 | |
US12/900,285 US9401784B2 (en) | 2009-10-21 | 2010-10-07 | Time and frequency acquisition and tracking for OFDMA wireless systems |
PCT/US2010/053583 WO2011050182A1 (en) | 2009-10-21 | 2010-10-21 | Time and frequency acquisition and tracking for ofdma wireless systems |
Publications (1)
Publication Number | Publication Date |
---|---|
BR112012009276A2 true BR112012009276A2 (pt) | 2016-05-31 |
Family
ID=43879690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112012009276A BR112012009276A2 (pt) | 2009-10-21 | 2010-10-21 | aquisição de tempo e frequência e rastreamento para sistemas sem dio ofdma |
Country Status (8)
Country | Link |
---|---|
US (3) | US9401784B2 (pt) |
EP (4) | EP2491659B1 (pt) |
JP (3) | JP5705865B2 (pt) |
KR (1) | KR101423599B1 (pt) |
CN (2) | CN102577144B (pt) |
BR (1) | BR112012009276A2 (pt) |
TW (2) | TW201138329A (pt) |
WO (1) | WO2011050182A1 (pt) |
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TW201404054A (zh) | 2014-01-16 |
JP2013509099A (ja) | 2013-03-07 |
KR101423599B1 (ko) | 2014-07-25 |
KR20120119216A (ko) | 2012-10-30 |
WO2011050182A1 (en) | 2011-04-28 |
JP2015146579A (ja) | 2015-08-13 |
TWI492552B (zh) | 2015-07-11 |
JP5976864B2 (ja) | 2016-08-24 |
TW201138329A (en) | 2011-11-01 |
US20110092231A1 (en) | 2011-04-21 |
JP5705865B2 (ja) | 2015-04-22 |
US9100150B2 (en) | 2015-08-04 |
US20130308466A1 (en) | 2013-11-21 |
US9628228B2 (en) | 2017-04-18 |
CN102577144A (zh) | 2012-07-11 |
EP2667517A1 (en) | 2013-11-27 |
US9401784B2 (en) | 2016-07-26 |
EP2597780A1 (en) | 2013-05-29 |
US20140135025A1 (en) | 2014-05-15 |
JP2014123961A (ja) | 2014-07-03 |
EP2597780B1 (en) | 2014-06-04 |
CN102577144B (zh) | 2015-11-25 |
JP5706011B2 (ja) | 2015-04-22 |
EP2491659B1 (en) | 2013-10-02 |
CN103825626B (zh) | 2016-02-03 |
EP2491659A1 (en) | 2012-08-29 |
CN103825626A (zh) | 2014-05-28 |
EP2755331A1 (en) | 2014-07-16 |
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