WO2001099328A1 - Data transmission apparatus and data transmission method - Google Patents
Data transmission apparatus and data transmission method Download PDFInfo
- Publication number
- WO2001099328A1 WO2001099328A1 PCT/JP2001/005397 JP0105397W WO0199328A1 WO 2001099328 A1 WO2001099328 A1 WO 2001099328A1 JP 0105397 W JP0105397 W JP 0105397W WO 0199328 A1 WO0199328 A1 WO 0199328A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission
- data
- transmission power
- reception quality
- bit
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 167
- 238000000034 method Methods 0.000 title claims description 12
- 238000004891 communication Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 12
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 12
- 238000001514 detection method Methods 0.000 description 7
- 238000013500 data storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/265—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the quality of service QoS
-
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/20—TPC being performed according to specific parameters using error rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
Definitions
- the present invention relates to a data transmission device and a data transmission method suitable for use in a communication terminal device and a base station device of a mobile communication system.
- the transmission of the information bit and the retransmission of the parity bit are performed with the same power, so that the same bit or more interference as in the transmission of the information bit at the time of retransmission of the priority bit.
- the transmission power per bit is reduced. Larger than a bit. For this reason, the parity bits are retransmitted with more transmission power than necessary, and the above-described problem occurs.
- the power per bit is P / 100. 0 It becomes 0. Same for parity bit retransmission If transmission is performed with power P, the power per bit is P / 10, which is larger than the transmission power of the information bit. As described above, when transmitting with the same power P, the power per parity bit becomes larger than that of the information bit, so that when retransmitting the parity bit, interference equal to or greater than that at the time of transmitting the information bit is obtained. The ratio given to other users increases. This problem is not limited to the Even Eve II hybrid ARQ scheme, but applies to all schemes in which the same power is used during transmission and retransmission. Disclosure of the invention
- An object of the present invention is to provide a data transmission device and a data transmission method capable of minimizing interference with other users during retransmission of transmission data. This object is achieved by controlling transmission power in retransmission of the transmission data after transmission of the transmission data.
- FIG. 1 is a block diagram showing a configuration of a base station apparatus and a communication terminal apparatus according to Embodiment 1 of the present invention
- FIG. 2 is a diagram for explaining data transmission in the base station apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is a block diagram showing a base station apparatus and a communication terminal apparatus according to Embodiment 2 of the present invention, and a configuration of each of them.
- FIG. 1 is a block diagram showing a configuration of each of a base station apparatus and a communication terminal apparatus according to Embodiment 1 of the present invention.
- base station apparatus 10 OA includes a buffer 101 for temporarily storing transmission data, a transmission frame creation unit 102 for creating a transmission frame, and a transmission frame creation unit 102 Modulating section 103 that modulates the transmission frame created in step 1 to generate a modulated signal, and transmitting radio section 104 that amplifies the modulated signal generated by modulating section 103 to a predetermined level of power and outputs the result.
- An antenna common unit 105 for distributing the antenna 106 to the transmitting system and the receiving system, an antenna 106, and a receiving radio unit for receiving a radio wave captured by the antenna 106 and outputting a modulated signal.
- a demodulation unit 108 that demodulates the modulated signal received by the reception radio unit 107, and a reception request and transmission request signal (ACK (Acknowledgment) from the signal demodulated by the demodulation unit 108. ) Signal) or a retransmission request signal (called a NACK (Negative Acknowledgment) signal).
- ACK Acknowledgment
- NACK Negative Acknowledgment
- a parity bit creation unit 110 that creates a parity bit (redundant bit) of an error correction code (FEC: Forward Error Correction) for error correction from the transmission data, and transmission data information.
- a transmission power determining unit 111 that determines the transmission power at the time of parity bit retransmission from the number of bits of the bits and the parity bit, and a transmission radio unit 104 that has the transmission power determined by the transmission power determining unit 111.
- a transmission power control unit 112 for controlling the transmission power.
- the transmission wireless unit 104 corresponds to a transmission unit.
- the transmission power determination unit 111 and the transmission power control unit 112 constitute transmission power control means.
- the communication terminal device 100 B receives the antenna 113, the antenna shared portion 114 that distributes the antenna 113 to the transmitting system and the receiving system, and the radio wave captured by the antenna 113.
- a receiving radio section 115 that outputs a modulated signal
- a demodulating section 116 that demodulates data from the modulated signal output from the receiving radio section 115
- a demodulated section that demodulates the demodulated section 116. Detects the data held in the data storage unit 1 17 that holds the data overnight, and the data stored in the data storage unit 1 17 and the data error corrected by the error correction unit 122.
- Modulating section 120 for generating a modulating signal by transmitting the modulated signal from modulating section 120 to a predetermined level of power and transmitting the amplified radio signal Department 1 2 1 and an error correction unit 1 2 2 for correcting the error of the data stored in the data storage unit 1 17.
- the input transmission data is stored in the buffer 101, and then only the transmission data is not subjected to error correction coding in the transmission frame creation unit 102.
- the generated transmission frame is modulated by the modulator 103, amplified by the transmission radio unit 104 to a predetermined level of power, and released from the antenna 106 through the antenna sharing unit 105 to the hollow. Is done.
- a radio wave captured by the antenna 113 is received by the reception radio unit 115 via the antenna sharing unit 114, and a modulated signal is output.
- the modulated signal output from reception radio section 115 is demodulated in demodulation section 116 and held in data holding section 117.
- the data held in the data storage unit 117 is subjected to error detection by the error detection unit 118. If there is an error in the data held in the data storage unit 117, the NACK signal is input from the error detection unit 118 to the transmission frame generation unit 119.
- the transmission frame creation unit 119 creates a transmission frame from the input N ACK signal and the transmission data.
- the transmission frame created by the transmission frame creation section 119 is modulated by the modulation section 120, then amplified by the transmission radio section 121 to a predetermined level of power, and transmitted through the antenna sharing section 114. It is emitted from the antenna 1 13 into the hollow.
- the radio wave captured by antenna 106 is received by receiving radio section 107 via antenna sharing section 105, and a modulated signal is output.
- the modulated signal output from reception radio section 107 is demodulated in demodulation section 108.
- the demodulated data is input to the demultiplexing unit 109 and separated into the received data and the NACK signal.
- the received data is output as it is, and the NACK signal is input to the buffer 101.
- the NACK signal is input to the buffer 101, the transmission data stored in the buffer 101 is input to the parity bit generator 110. Then, a parity bit of an error correction code for error correction is created from the transmission data by the parity bit creation unit 110 and input to the transmission frame creation unit 102.
- the number of information bits and the number of parity bits in the transmission data are input to the transmission power determination unit 111, and the transmission power at the time of parity bit retransmission is determined from these bits. For example, assuming that the number of information bits of transmission data is “100” and the number of bits of noise bits is “10”, and that transmission data is transmitted with power P, Is P / 100. In the retransmission of the parity bit, the power is determined to be P / 100 so that the power per bit is equal to the transmission data. In this way, the power ratio between the transmission data and the parity bit is made equal to the ratio of the number of information bits and the number of parity bits (that is, the transmission power per bit is made the same).
- the transmission power information determined by the transmission power determination unit 111 is input to the transmission power control unit 112.
- the transmission power control section 112 controls the transmission power of the transmission radio section 104 based on the input transmission power information.
- the parity bit created by parity bit creation section 110 is input to transmission frame creation section 102, and a transmission frame is created.
- the created transmission frame is modulated by modulation section 103 and input to transmission radio section 104.
- the modulated signal input to transmission radio section 104 is emitted from antenna 106 to the air through antenna sharing section 105 with transmission power controlled by transmission power control section 112.
- the data stored in the data storage section 117 and the parity bit are corrected by the error correction section.
- the data is input to 122 and error correction is performed.
- the error-corrected data is input to an error detector 118 to perform error detection. The series of operations is repeated until no error is detected by the error detection unit 118.
- the data after error correction is output as received data. Is reset.
- an ACK signal requesting transmission of the next data is input from the error detection unit 118 to the transmission frame generation unit 119, and a transmission frame is generated together with the transmission data.
- the base station apparatus 10OA When the base station apparatus 10OA receives the ACK signal, the ACK signal is input to the buffer 101, and the contents are reset. This allows for the following data Transmission can begin.
- FIG. 2 shows the difference between the power of the information bit and the power of the parity bit.
- the transmission power of the non-Sity bits is determined, and the parity bit is transmitted at the determined power.
- the number of parity bits is smaller than the number of information bits.
- the transmission power of the parity bits is transmitted. Since the transmission power is set lower than the data transmission power, interference with other users due to the transmission of parity bits can be suppressed to a low level.
- base device 100A and communication terminal device 100B may be opposite to each other. That is, 100OA may be a communication terminal device, and 100B may be a base station device.
- FIG. 3 is a block diagram showing a base station apparatus and a communication terminal apparatus according to Embodiment 2 of the present invention, and a configuration of each of them.
- the same parts as those in FIG. 1 described above are denoted by the same reference numerals, and description thereof will be omitted.
- the ratio between the power of transmission data and the power of parity bits is determined by the number of information bits and the number of parity bits of transmission data.
- the determination is made based on the ratio, in the present embodiment, the determination is made based on the reception quality information in addition to the ratio between the information bit of the transmission data and the number of bits of the knowledge bit.
- the modulated signal received by receiving radio section 115 is demodulated by demodulating section 116, and reception quality is measured by reception quality measuring section (reception quality measuring means) 301. Measured.
- the data demodulated by the demodulation unit 116 is held in the data holding unit 117.
- the reception quality was measured by the reception quality measurement unit 301.
- the reception quality information is input to the transmission frame creation unit 119, and a transmission frame is created together with the eighty-one signal or the eight CK signal and the transmission data.
- the modulated signal received by reception radio section 107 is demodulated by demodulation section 108.
- the data demodulated by the demodulation unit 108 is separated by the separation unit 109 into reception data and an ACK signal or NACK signal and reception quality information.
- the separated reception data is output as it is, the NACK signal is input to the buffer 101, and the reception quality information is input to the transmission power determination unit 111.
- the transmission power determination unit 111 determines transmission power using the reception quality information. For example, assuming that the transmission power is determined in the same manner as in the first embodiment, if the reception quality is further poor from the reception quality information, the transmission power is set to be larger than the determined transmission power.
- the power is set lower than the determined transmission power. By doing so, the probability that the parity bit is erroneous is reduced when the reception quality is poor, and when the reception quality is good, interference with other users due to lowering the power can be reduced.
- base device 100A and communication terminal device 100C may be opposite to each other. That is, 100 OA may be used as a communication terminal device, and 100 OA may be used as a base station device.
- the transmission power is controlled so that the transmission power per bit is the same between the transmission data and the transmission of the parity bit.
- the transmission power is not necessarily required to be the same.
- the transmission power of the parity bits may be increased or decreased from the ratio of the number of information bits to the number of knowledge bits of transmission data. In this case, if the transmission power per parity bit is large, the error correction capability increases, but interference with other users increases. Conversely, if the transmission power per parity bit is small, interference with other users is reduced, but the error correction capability is reduced.
- the transmission power may be increased for data where retransmission delay is not allowed, and the transmission power may be decreased for data where delay is allowed. Taking these points into account, the transmission power may be appropriately changed.
- the configuration is such that both the ACK signal and the NACK signal are returned. However, it is not always necessary to return the NACK signal. For example, if a method is adopted in which data is retransmitted if no ACK signal arrives within a predetermined time after data transmission, it is not necessary to return a NACK signal.
- the information bits for which error correction is not performed in the first transmission and the parity bits are limited in the retransmission, but the information bit and the parity bit are transmitted in either the first transmission or the retransmission. It may be a combination of the two.
- the present invention it is possible to minimize interference with other users in retransmission of transmission data overnight, and to achieve good communication.
- This specification is based on Japanese Patent Application No. 2000-190229 filed on June 23, 2000. This content is included here. Industrial applicability
- the present invention is suitable for use in a communication terminal device and a base station device of a mobile communication system.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
- Transmitters (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01941210A EP1207646A1 (en) | 2000-06-23 | 2001-06-25 | Data transmission apparatus and data transmission method |
US10/069,005 US6931077B2 (en) | 2000-06-23 | 2001-06-25 | Data transmitting apparatus and data transmitting method |
AU74607/01A AU7460701A (en) | 2000-06-23 | 2001-06-25 | Data transmission apparatus and data transmission method |
KR1020027002248A KR20020020971A (ko) | 2000-06-23 | 2001-06-25 | 데이터 전송 장치, 기지국 장치, 통신 단말 장치 및데이터 전송 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-190229 | 2000-06-23 | ||
JP2000190229A JP2002009692A (ja) | 2000-06-23 | 2000-06-23 | データ伝送装置及びデータ伝送方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001099328A1 true WO2001099328A1 (en) | 2001-12-27 |
Family
ID=18689732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005397 WO2001099328A1 (en) | 2000-06-23 | 2001-06-25 | Data transmission apparatus and data transmission method |
Country Status (7)
Country | Link |
---|---|
US (1) | US6931077B2 (ja) |
EP (1) | EP1207646A1 (ja) |
JP (1) | JP2002009692A (ja) |
KR (1) | KR20020020971A (ja) |
CN (1) | CN1173514C (ja) |
AU (1) | AU7460701A (ja) |
WO (1) | WO2001099328A1 (ja) |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW347616B (en) | 1995-03-31 | 1998-12-11 | Qualcomm Inc | Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed. |
US6977967B1 (en) | 1995-03-31 | 2005-12-20 | Qualcomm Incorporated | Method and apparatus for performing fast power control in a mobile communication system |
WO2001091407A1 (en) * | 2000-05-25 | 2001-11-29 | Soma Networks, Inc. | Quality dependent data communication channel |
US8199696B2 (en) | 2001-03-29 | 2012-06-12 | Qualcomm Incorporated | Method and apparatus for power control in a wireless communication system |
US7986672B2 (en) * | 2002-02-25 | 2011-07-26 | Qualcomm Incorporated | Method and apparatus for channel quality feedback in a wireless communication |
WO2003090360A1 (en) * | 2002-04-19 | 2003-10-30 | Thomson Licensing S.A. | Synchronization loss resilient digital communication system using forward erasure correction |
US6898193B2 (en) * | 2002-06-20 | 2005-05-24 | Qualcomm, Incorporated | Adaptive gain adjustment control |
JP2004112597A (ja) * | 2002-09-20 | 2004-04-08 | Matsushita Electric Ind Co Ltd | 基地局装置及びパケット品質推定方法 |
JP3679089B2 (ja) * | 2002-11-20 | 2005-08-03 | 松下電器産業株式会社 | 基地局装置および再送パケットの送信電力制御方法 |
US7155249B2 (en) * | 2003-01-10 | 2006-12-26 | Qualcomm Incorporated | Modified power control for hybrid ARQ on the reverse link |
JP4224337B2 (ja) | 2003-04-04 | 2009-02-12 | パナソニック株式会社 | 無線送信装置および無線送信方法 |
EP1730872A1 (en) | 2004-03-04 | 2006-12-13 | Qualcomm, Incorporated | Early termination of low data rate traffic in a wireless network |
ATE418822T1 (de) * | 2004-04-01 | 2009-01-15 | Panasonic Corp | Interferenzverminderung bei wiederholungsübertragungen im aufwärtskanal |
EP1782551B1 (en) | 2004-07-30 | 2016-10-05 | CommScope Technologies LLC | Power control in a local network node (lnn) |
US8503342B2 (en) | 2004-07-30 | 2013-08-06 | Airvana Llc | Signal transmission method from a local network node |
JP4898694B2 (ja) * | 2005-10-11 | 2012-03-21 | パナソニック株式会社 | 送信装置及び送信方法 |
EP1791285A1 (en) * | 2005-11-29 | 2007-05-30 | Alcatel Lucent | Hybrid ARQ apparatus and corresponding method, wherein the FEC redundancy is adapted based on the number of retransmissions of a packet |
US8194760B2 (en) * | 2006-06-01 | 2012-06-05 | Ntt Docomo, Inc. | Method and apparatus for distributed space-time coding in wireless radio networks |
US20080089333A1 (en) * | 2006-10-17 | 2008-04-17 | Kozat Ulas C | Information delivery over time-varying network topologies |
US7899028B2 (en) * | 2006-10-27 | 2011-03-01 | Samsung Electronics Co., Ltd. | Method and system for synchronizing data transmissions in IP-based networks |
US8027407B2 (en) * | 2006-11-06 | 2011-09-27 | Ntt Docomo, Inc. | Method and apparatus for asynchronous space-time coded transmission from multiple base stations over wireless radio networks |
US8059732B2 (en) * | 2006-11-28 | 2011-11-15 | Ntt Docomo, Inc. | Method and apparatus for wideband transmission from multiple non-collocated base stations over wireless radio networks |
JP2008167141A (ja) * | 2006-12-28 | 2008-07-17 | Nec Corp | データ伝送方法および装置、それを用いた通信システム |
US8861356B2 (en) * | 2007-03-13 | 2014-10-14 | Ntt Docomo, Inc. | Method and apparatus for prioritized information delivery with network coding over time-varying network topologies |
US20090285323A1 (en) * | 2008-05-15 | 2009-11-19 | Sundberg Carl-Erik W | Adaptive soft output m-algorithm receiver structures |
US8064548B2 (en) * | 2007-05-18 | 2011-11-22 | Ntt Docomo, Inc. | Adaptive MaxLogMAP-type receiver structures |
US20080304590A1 (en) * | 2007-06-06 | 2008-12-11 | Sundberg Carl-Erik W | Method and apparatus for transmission from multiple non-collocated base stations over wireless radio networks |
WO2009005428A1 (en) * | 2007-07-04 | 2009-01-08 | Telefonaktiebolaget Lm Ericsson (Publ) | User terminal power shortage indication |
US20090075686A1 (en) * | 2007-09-19 | 2009-03-19 | Gomadam Krishna S | Method and apparatus for wideband transmission based on multi-user mimo and two-way training |
US8325840B2 (en) * | 2008-02-25 | 2012-12-04 | Ntt Docomo, Inc. | Tree position adaptive soft output M-algorithm receiver structures |
US8279954B2 (en) * | 2008-03-06 | 2012-10-02 | Ntt Docomo, Inc. | Adaptive forward-backward soft output M-algorithm receiver structures |
US8565329B2 (en) * | 2008-06-03 | 2013-10-22 | Ntt Docomo, Inc. | Soft output M-algorithm receiver structures with generalized survivor selection criteria for MIMO systems |
US8229443B2 (en) * | 2008-08-13 | 2012-07-24 | Ntt Docomo, Inc. | Method of combined user and coordination pattern scheduling over varying antenna and base-station coordination patterns in a multi-cell environment |
US8451951B2 (en) * | 2008-08-15 | 2013-05-28 | Ntt Docomo, Inc. | Channel classification and rate adaptation for SU-MIMO systems |
US8705484B2 (en) * | 2008-08-15 | 2014-04-22 | Ntt Docomo, Inc. | Method for varying transmit power patterns in a multi-cell environment |
US8542640B2 (en) * | 2008-08-28 | 2013-09-24 | Ntt Docomo, Inc. | Inter-cell approach to operating wireless beam-forming and user selection/scheduling in multi-cell environments based on limited signaling between patterns of subsets of cells |
US8855221B2 (en) * | 2008-09-15 | 2014-10-07 | Ntt Docomo, Inc. | Method and apparatus for iterative receiver structures for OFDM/MIMO systems with bit interleaved coded modulation |
US9048977B2 (en) | 2009-05-05 | 2015-06-02 | Ntt Docomo, Inc. | Receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO systems |
US8514961B2 (en) | 2010-02-04 | 2013-08-20 | Ntt Docomo, Inc. | Method and apparatus for distributed space-time coding in wireless radio networks |
US9805479B2 (en) | 2013-11-11 | 2017-10-31 | Amazon Technologies, Inc. | Session idle optimization for streaming server |
US9634942B2 (en) | 2013-11-11 | 2017-04-25 | Amazon Technologies, Inc. | Adaptive scene complexity based on service quality |
US9413830B2 (en) | 2013-11-11 | 2016-08-09 | Amazon Technologies, Inc. | Application streaming service |
US9578074B2 (en) * | 2013-11-11 | 2017-02-21 | Amazon Technologies, Inc. | Adaptive content transmission |
US9641592B2 (en) | 2013-11-11 | 2017-05-02 | Amazon Technologies, Inc. | Location of actor resources |
US9582904B2 (en) | 2013-11-11 | 2017-02-28 | Amazon Technologies, Inc. | Image composition based on remote object data |
US9604139B2 (en) | 2013-11-11 | 2017-03-28 | Amazon Technologies, Inc. | Service for generating graphics object data |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05160777A (ja) * | 1991-12-03 | 1993-06-25 | Nec Eng Ltd | 無線送信電力制御方式 |
JPH09312629A (ja) * | 1996-05-20 | 1997-12-02 | Mitsubishi Electric Corp | スペクトル拡散通信装置 |
JPH1117646A (ja) * | 1997-06-20 | 1999-01-22 | Nec Corp | 可変レートcdma送信電力制御方式 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5841768A (en) * | 1996-06-27 | 1998-11-24 | Interdigital Technology Corporation | Method of controlling initial power ramp-up in CDMA systems by using short codes |
US6138260A (en) | 1997-09-04 | 2000-10-24 | Conexant Systems, Inc. | Retransmission packet capture system within a wireless multiservice communications environment with turbo decoding |
US6101168A (en) * | 1997-11-13 | 2000-08-08 | Qualcomm Inc. | Method and apparatus for time efficient retransmission using symbol accumulation |
JP3577253B2 (ja) * | 2000-01-31 | 2004-10-13 | シャープ株式会社 | 無線通信装置およびその送信電力制御方法およびそれを用いた無線通信システム |
JP3686836B2 (ja) * | 2000-03-13 | 2005-08-24 | シャープ株式会社 | 無線通信機の送信電力値自動制御方法およびそれを記憶した記憶媒体 |
SG109450A1 (en) * | 2000-04-06 | 2005-03-30 | Ntt Docomo Inc | Multicast signal transmission power control method and base station using the same |
EP1207644B1 (en) * | 2000-11-17 | 2008-08-20 | LG Electronics, Inc. | Method of link adaptation of blind type using acknowledgements in ARQ system |
JP2003008553A (ja) * | 2001-06-22 | 2003-01-10 | Mitsubishi Electric Corp | 送信機、受信機、送受信機および通信システム |
-
2000
- 2000-06-23 JP JP2000190229A patent/JP2002009692A/ja active Pending
-
2001
- 2001-06-25 AU AU74607/01A patent/AU7460701A/en not_active Abandoned
- 2001-06-25 US US10/069,005 patent/US6931077B2/en not_active Expired - Fee Related
- 2001-06-25 WO PCT/JP2001/005397 patent/WO2001099328A1/ja not_active Application Discontinuation
- 2001-06-25 CN CNB018015085A patent/CN1173514C/zh not_active Expired - Fee Related
- 2001-06-25 KR KR1020027002248A patent/KR20020020971A/ko active IP Right Grant
- 2001-06-25 EP EP01941210A patent/EP1207646A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05160777A (ja) * | 1991-12-03 | 1993-06-25 | Nec Eng Ltd | 無線送信電力制御方式 |
JPH09312629A (ja) * | 1996-05-20 | 1997-12-02 | Mitsubishi Electric Corp | スペクトル拡散通信装置 |
JPH1117646A (ja) * | 1997-06-20 | 1999-01-22 | Nec Corp | 可変レートcdma送信電力制御方式 |
Non-Patent Citations (1)
Title |
---|
NIINOMI TADAFUSA ET AL.: "Selective repeat type-II hybrid ARQ/FEC scheme using rate-compatible punctured convolutional code. In: communications, 1990. ICC '90, including supercomm technical sessions. SUPERCOMM/ICC '90. conference record", IEEE INTERNATIONAL CONFERENCE, vol. 3, 1990, pages 1251 - 1255, XP002945013 * |
Also Published As
Publication number | Publication date |
---|---|
EP1207646A1 (en) | 2002-05-22 |
CN1173514C (zh) | 2004-10-27 |
KR20020020971A (ko) | 2002-03-16 |
US6931077B2 (en) | 2005-08-16 |
US20020114404A1 (en) | 2002-08-22 |
AU7460701A (en) | 2002-01-02 |
CN1381118A (zh) | 2002-11-20 |
JP2002009692A (ja) | 2002-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2001099328A1 (en) | Data transmission apparatus and data transmission method | |
US11252603B2 (en) | Retransmission schemes based on LLR combining in WLAN | |
KR100789042B1 (ko) | Arq 송신 다이버시티 방안을 위한 콘스텔레이션 재배치 | |
JP4897055B2 (ja) | 無線通信システムにおける改善された再送処理 | |
US7836373B2 (en) | Method and apparatus for receiving data in a communication system | |
US7289567B2 (en) | Apparatus and method for transmitting and receiving data using partial chase combining | |
US20130246876A1 (en) | Method and Arrangement for Retransmission Control | |
JP2003008553A (ja) | 送信機、受信機、送受信機および通信システム | |
US20030040284A1 (en) | Method and apparatus of retransmitted data combination | |
US20080250293A1 (en) | Apparatus and method for handling data error in data transmission system including relay station | |
KR100703107B1 (ko) | 무선통신 시스템에서 데이터 자동 재전송 방법 | |
KR100387543B1 (ko) | 통신 단말 장치 | |
JP2003163960A (ja) | 無線通信システム及びデータ伝送方法 | |
JP4319630B2 (ja) | 無線通信装置 | |
JP2004007028A (ja) | 送信装置及び送信方法 | |
KR100663469B1 (ko) | 통신 시스템에서 신호 송수신 장치 및 방법 | |
US8151168B2 (en) | Method, apparatus and system for error detection and selective retransmission | |
WO2010041295A1 (ja) | 無線中継装置および中継局における再送方法 | |
JP2008103991A (ja) | データ伝送方法 | |
JP2007312156A (ja) | 誤り訂正符号データの再送制御方法、無線装置及びプログラム | |
JP2004274761A (ja) | 無線システムのデータ送受信装置及びその方法 | |
KR20040084212A (ko) | 궤환채널의 상태를 이용한 적응형 Hybrid ARQ 무선 통신 시스템 | |
KR101182856B1 (ko) | 재전송 방법 및 장치 | |
JP2005223620A (ja) | 無線通信装置及び無線通信システム | |
JP2009296182A (ja) | 無線通信システム、無線通信装置および無線通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 018015085 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: IN/PCT/2002/234/KOL Country of ref document: IN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10069005 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020027002248 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001941210 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020027002248 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2001941210 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020027002248 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2001941210 Country of ref document: EP |