JP5721301B2 - 通信システムにおける非同期増分冗長受信のための方法および装置 - Google Patents
通信システムにおける非同期増分冗長受信のための方法および装置 Download PDFInfo
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- JP5721301B2 JP5721301B2 JP2001276445A JP2001276445A JP5721301B2 JP 5721301 B2 JP5721301 B2 JP 5721301B2 JP 2001276445 A JP2001276445 A JP 2001276445A JP 2001276445 A JP2001276445 A JP 2001276445A JP 5721301 B2 JP5721301 B2 JP 5721301B2
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- 238000004891 communication Methods 0.000 title claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000012790 confirmation Methods 0.000 claims description 34
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
- H04L1/1845—Combining techniques, e.g. code combining
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L2001/125—Arrangements for preventing errors in the return channel
Description
関連する主題は、本願と一緒に提出された下記の出願、すなわち、米国特許出願第 号、「通信システムにおける非同期増分冗長送信用の方法および装置」に開示されている。
Claims (8)
- IRの使用を伴うARQを使用する通信システム内で情報を受信するための方法であって、
符号化された情報が新規情報であるか又は継続情報であるかを示す情報状態フラッグを含む該符号化された情報を受信するステップを含み、新規情報は、情報の新たに送信されたブロックを含み、継続情報は、以前に送信された情報の継続であるか、又は、解読に失敗した以前に送信された情報の再送信である情報を含み、
該情報状態フラッグが、該符号化された情報が新規情報であることを示し、且つ、該受信装置が、新規情報を待っている場合に、該符号化された情報を解読するステップと、
該受信装置が継続情報を待っており、且つ、該情報状態フラッグが、該符号化された情報が継続情報であることを示している場合に、受信した継続情報を、前に受信している解読作業が成功しなかった新規情報と結合し、該受信した継続情報と該前に受信している新規情報との結合情報を解読するステップと、
該受信装置が新規情報を待っており、且つ、該情報状態フラッグが、該符号化された情報が継続情報であることを示している場合に、肯定的確認メッセージを提供することを決定するステップであって、該肯定的確認メッセージは、該受信した継続情報を解読することを試みる前に提供され、それによって、前の確認メッセージ送信の誤った解釈から回復するステップを含む方法。 - 請求項1記載の方法において、さらに、該受信装置が肯定的確認メッセージを送信した後に、該受信装置が新規情報を待っているということを決定するステップを含む方法。
- 請求項1記載の方法において、さらに、該受信情報が新規情報であり、解読作業が成功した場合に、肯定的確認メッセージを提供することを決定するステップを含む方法。
- 請求項1記載の方法において、さらに、該受信情報が新規情報であり、解読作業が成功しなかった場合に、否定的確認メッセージを提供することを決定するステップを含む方法。
- 通信システム内の受信装置において情報を受信する方法であって、
符号化された情報が新規情報であるか又は継続情報であるかを示す情報状態フラッグを含む該符号化された情報を受信するステップを含み、新規情報は、情報の新たに送信されたブロックを含み、継続情報は、以前に送信された情報の継続であるか、又は、解読に失敗した以前に送信された情報の再送信である情報を含み、
該情報状態フラッグが、該符号化された情報が新規情報であることを示し、且つ、該受信装置が、新規情報を待っている場合に、該符号化された情報を解読するステップと、
該受信装置が継続情報を待っており、該情報状態フラッグが、該符号化された情報が継続情報であることを示している場合に、受信した継続情報を、前に受信している解読作業が成功しなかった新規情報と結合し、該受信した継続情報と該前に受信している新規情報との結合情報を解読するステップと、
該受信装置が新規情報を待っており、且つ、該情報状態フラッグが、該符号化された情報が継続情報であることを示している場合に、肯定的確認メッセージを提供することを決定するステップとを含み、該肯定的確認メッセージは、該受信した継続情報を解読することを試みる前に提供される方法。 - 請求項5に記載の方法において、該受信装置によって肯定的確認メッセージが送信された後に、該受信装置が新規情報を待っているということを決定するステップをさらに含む方法。
- 請求項5に記載の方法において、
該情報状態フラッグが、受信した情報が新規情報を含むことを示している場合であって、且つ、該解読作業が成功した場合に、肯定的確認メッセージを提供することを決定するステップを含む方法。 - 請求項5に記載の方法において、
該情報状態フラッグが、該受信した情報が新規情報を含むことを示している場合であって、且つ、該解読作業が成功しなかった場合に、否定的確認メッセージを提供することを決定するステップを含む方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/660092 | 2000-09-12 | ||
US09/660,092 US7206280B1 (en) | 2000-09-12 | 2000-09-12 | Method and apparatus for asynchronous incremental redundancy reception in a communication system |
Publications (2)
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JP2002135233A JP2002135233A (ja) | 2002-05-10 |
JP5721301B2 true JP5721301B2 (ja) | 2015-05-20 |
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JP2001276445A Expired - Lifetime JP5721301B2 (ja) | 2000-09-12 | 2001-09-12 | 通信システムにおける非同期増分冗長受信のための方法および装置 |
Country Status (3)
Country | Link |
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US (1) | US7206280B1 (ja) |
EP (1) | EP1187386B1 (ja) |
JP (1) | JP5721301B2 (ja) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7302628B2 (en) * | 2000-12-14 | 2007-11-27 | Telefonaktiebolaget L M Ericsson (Publ) | Data compression with incremental redundancy |
DE10116547A1 (de) * | 2001-04-03 | 2002-10-10 | Nokia Corp | Registrierung eines Endgeräts in einem Datennetz |
KR20030004978A (ko) * | 2001-07-07 | 2003-01-15 | 삼성전자 주식회사 | 이동 통신시스템에서 초기전송 및 재전송 방법 |
DE10147487B4 (de) * | 2001-09-26 | 2006-02-09 | Siemens Ag | Verfahren und Funkstation zur Datenübertragung in einem Funk-Kommunikationssytem |
US8315210B2 (en) | 2002-08-13 | 2012-11-20 | Koninklijke Philips Electronics N.V. | ARQ system with status and packet acknowledgement |
RU2307464C2 (ru) | 2003-02-12 | 2007-09-27 | Мацусита Электрик Индастриал Ко., Лтд. | Приемное устройство и способ приема |
JP3785161B2 (ja) * | 2003-06-13 | 2006-06-14 | 株式会社東芝 | 通信装置及び通信装置の誤り検出訂正方法 |
US7466666B2 (en) * | 2003-06-18 | 2008-12-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Forward ACK/NACK channel for CDMA system |
WO2005006640A1 (en) | 2003-07-11 | 2005-01-20 | Philips Intellectual Property & Standards Gmbh | Transmission of data packets from a transmitter to a receiver |
US7385954B2 (en) * | 2003-07-16 | 2008-06-10 | Lucent Technologies Inc. | Method of transmitting or retransmitting packets in a communication system |
US7401124B2 (en) * | 2003-09-05 | 2008-07-15 | International Business Machines Corporation | Apparatus and method to write information to two geographically separated virtual tape servers |
US7668125B2 (en) | 2003-09-09 | 2010-02-23 | Qualcomm Incorporated | Incremental redundancy transmission for multiple parallel channels in a MIMO communication system |
EP1726132A2 (en) * | 2004-03-03 | 2006-11-29 | Koninklijke Philips Electronics N.V. | Data processing circuit wherein data processing units communicate via a network. |
US7376208B2 (en) * | 2004-05-13 | 2008-05-20 | Lucent Technologies Inc. | Reception method for packetized information with automatic repeat request |
JP4501566B2 (ja) * | 2004-07-13 | 2010-07-14 | 富士通株式会社 | 無線通信装置及び移動局 |
KR100772369B1 (ko) * | 2004-07-13 | 2007-11-01 | 삼성전자주식회사 | 재전송 제어 방법 및 장치 |
US7940663B2 (en) * | 2004-07-20 | 2011-05-10 | Qualcomm Incorporated | Mitigating ACK/NACK errors in MIMO/SIC/HARQ |
US9014192B2 (en) | 2005-03-21 | 2015-04-21 | Qualcomm Incorporated | Method and apparatus for improving data transmission reliability in a wireless communications system |
US8219867B2 (en) | 2005-08-24 | 2012-07-10 | Telefonaktiebolaget L M Ericsson (Publ) | Forward feedback for UL macrodiversity |
WO2007052719A1 (ja) * | 2005-11-01 | 2007-05-10 | Ntt Docomo, Inc. | 再送制御方法及び受信側装置 |
CN101064665B (zh) * | 2006-04-27 | 2010-06-23 | 上海无线通信研究中心 | 基于业务质量的harq方法 |
GB0612439D0 (en) * | 2006-06-23 | 2006-08-02 | Siemens Ag | Packet re-transmission |
US8386871B2 (en) * | 2007-02-09 | 2013-02-26 | Ntt Docomo, Inc. | Retransmission control method and receiving side apparatus |
US7978635B2 (en) * | 2007-03-21 | 2011-07-12 | Qualcomm Incorporated | H-ARQ acknowledgment detection validation by re-decoding |
JP4783402B2 (ja) | 2007-06-13 | 2011-09-28 | イノヴァティヴ ソニック リミテッド | 無線通信システムにおいてharq機能を改善する方法及び装置 |
JP5087479B2 (ja) * | 2007-07-16 | 2012-12-05 | イノヴァティヴ ソニック リミテッド | 無線通信システムにおいてharq機能を改善する方法及び装置 |
CN101399642B (zh) * | 2007-09-29 | 2012-01-11 | 中兴通讯股份有限公司 | 一种处理对数据判断信息判断出现错误的方法和装置 |
US8553624B2 (en) | 2007-10-10 | 2013-10-08 | Samsung Electronics Co., Ltd. | Asynchronous hybrid ARQ process indication in a MIMO wireless communication system |
US20090150750A1 (en) * | 2007-12-05 | 2009-06-11 | Qualcomm Incorporated | Method and apparatus for harq encoding with low memory requirement |
US8619775B2 (en) * | 2008-07-21 | 2013-12-31 | Ltn Global Communications, Inc. | Scalable flow transport and delivery network and associated methods and systems |
US9444587B2 (en) | 2008-10-16 | 2016-09-13 | Qualcomm Incorporated | Incremental redundancy relays for wireless communication |
WO2010075409A1 (en) * | 2008-12-22 | 2010-07-01 | LiveTimeNet, Inc. | A system and method for recovery of packets in overlay networks |
US7978626B1 (en) * | 2009-01-13 | 2011-07-12 | Sprint Spectrum L.P. | Method and system for adaptive hybrid automatic repeat request protocols based on network conditions |
US9106569B2 (en) | 2009-03-29 | 2015-08-11 | Ltn Global Communications, Inc. | System and method that routes flows via multicast flow transport for groups |
US8599851B2 (en) | 2009-04-03 | 2013-12-03 | Ltn Global Communications, Inc. | System and method that routes flows via multicast flow transport for groups |
US8369337B1 (en) | 2009-11-05 | 2013-02-05 | Sprint Spectrum L.P. | Methods and devices for assigning a wireless communication device to a wireless coverage area based on early termination gain |
US8977922B2 (en) * | 2012-03-22 | 2015-03-10 | Broadcom Corporation | ACK-NACK signaling enhancements |
US9337983B1 (en) * | 2014-03-13 | 2016-05-10 | Sprint Spectrum L.P. | Use of discrete portions of frequency bandwidth to distinguish between ACK and NACK transmissions |
US9531504B1 (en) | 2014-03-27 | 2016-12-27 | Sprint Spectrum L.P. | Bundling acknowledgments based on signal quality |
US9473973B1 (en) | 2014-05-19 | 2016-10-18 | Sprint Spectrum L.P. | Reducing transmission rates in data slots subject to bundled acknowledgments |
US9531505B1 (en) | 2014-06-20 | 2016-12-27 | Sprint Spectrum L.P. | Determining an amount of hybrid ARQ transmissions based on a series of acknowledgments |
US9445344B1 (en) | 2014-07-22 | 2016-09-13 | Sprint Spectrum L.P. | Preferentially assigning data slots subject to bundled acknowledgments to devices that support carrier aggregation |
US9609651B1 (en) | 2015-01-08 | 2017-03-28 | Sprint Spectrum L.P. | Exchanging uplink and downlink carrier frequencies |
US10021686B1 (en) | 2015-10-19 | 2018-07-10 | Sprint Spectrum L.P. | Scheduling traffic based on acknowledgment bundling |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5573157A (en) * | 1978-11-27 | 1980-06-02 | Ricoh Co Ltd | Data communication system |
CN86101893A (zh) * | 1985-02-28 | 1986-11-05 | 佳能株式会社 | 数据通信设备 |
JPH02100538A (ja) * | 1988-10-07 | 1990-04-12 | Japan Radio Co Ltd | ローカルエリアネットワークのデータ通信方法 |
GB9206863D0 (en) * | 1992-03-27 | 1992-05-13 | British Telecomm | Apparatus for transmitting and receiving information blocks |
JPH0677963A (ja) * | 1992-07-07 | 1994-03-18 | Hitachi Ltd | 通信方式および端末装置 |
US5477550A (en) * | 1993-03-08 | 1995-12-19 | Crisler; Kenneth J. | Method for communicating data using a modified SR-ARQ protocol |
US5636230A (en) * | 1994-05-31 | 1997-06-03 | Motorola, Inc. | Method for eliminating a receiving data unit as a source of excessive resend requests |
US6778558B2 (en) * | 1998-02-23 | 2004-08-17 | Lucent Technologies Inc. | System and method for incremental redundancy transmission in a communication system |
US6704898B1 (en) * | 1998-10-23 | 2004-03-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Combined hybrid automatic retransmission request scheme |
CN1335002A (zh) | 1999-01-29 | 2002-02-06 | 诺基亚网络有限公司 | 在冗余度增量通信系统中可以对数据块进行合并的信令方法 |
US6519731B1 (en) * | 1999-10-22 | 2003-02-11 | Ericsson Inc. | Assuring sequence number availability in an adaptive hybrid-ARQ coding system |
US6505034B1 (en) * | 1999-12-20 | 2003-01-07 | Nokia Ip Inc. | Adaptive ARQ feedback bandwidth allocation |
-
2000
- 2000-09-12 US US09/660,092 patent/US7206280B1/en not_active Expired - Lifetime
-
2001
- 2001-08-28 EP EP01307290A patent/EP1187386B1/en not_active Expired - Lifetime
- 2001-09-12 JP JP2001276445A patent/JP5721301B2/ja not_active Expired - Lifetime
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Publication number | Publication date |
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EP1187386B1 (en) | 2008-10-08 |
JP2002135233A (ja) | 2002-05-10 |
EP1187386A1 (en) | 2002-03-13 |
US7206280B1 (en) | 2007-04-17 |
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