WO2003003647A1 - Dispositif de communication de donnes et procede de communication de donnees - Google Patents
Dispositif de communication de donnes et procede de communication de donnees Download PDFInfo
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- WO2003003647A1 WO2003003647A1 PCT/JP2002/006342 JP0206342W WO03003647A1 WO 2003003647 A1 WO2003003647 A1 WO 2003003647A1 JP 0206342 W JP0206342 W JP 0206342W WO 03003647 A1 WO03003647 A1 WO 03003647A1
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Classifications
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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
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- 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
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/286—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission during data packet transmission, e.g. high speed packet access [HSPA]
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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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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- 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
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- 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
- H04W52/38—TPC being performed in particular situations
- H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
Definitions
- the present invention relates to a data communication device and a data communication method.
- type 2 hybrid automatic repeat request (ARQ) scheme For example, as an error control technique used in mobile communication, there is a type 2 hybrid automatic repeat request (ARQ) scheme (hereinafter, referred to as a "type 2 hybrid ARQ scheme").
- ARQ automatic repeat request
- This type 2 hybrid ARQ scheme uses an evening code and is also called an IR (Incremental Redundancy) scheme.
- the transmitter performs turbo coding, and among the turbo-coded signals, first transmits information bits (also called “systematic bits”) (S). Perform error detection at the receiver. If an error is detected, the receiver returns a NACK (Negative ACKnowlegement) signal to the transmitter. In this case, the transmitter transmits FEC (Forward Error Correction) parity bit 1 (P 1) (redundant bit) for error correction, and the receiver transmits the information bit and parity bit.
- FEC Forward Error Correction
- P 1 Redundant bit
- the transmitter When an error is further detected, in response to the NACK signal from the receiver, the transmitter also transmits FEC parity bit 2 (P 2) for error correction, and the receiver transmits the information One-bit decoding is performed using the bit, parity bit 1 and parity bit 2. If there is no error, an ACK (ACKnowlegement: acknowledgment) signal is returned and the next data is requested.
- FEC parity bit 2 P 2
- the quality of the information bits in the received signal depends on the quality of the decoded signal. Significantly affects quality. That is, when the quality of the information bits is not good (for example, the SN ratio is low), decoding cannot be performed well even if the quality of the parity bits is high, and a high-quality decoded signal cannot be obtained. Therefore, in the type 2 hybrid ARQ scheme, the information bits are transmitted first, and the parity bits are transmitted in the case of retransmission, so that the information bits transmitted first deteriorate in quality due to fading and have a low SN ratio. If the received signal is received in the same way, even after retransmission of many parity bits, the quality after combining does not improve, and useless retransmission may continue.
- the present invention has been made in view of the above circumstances, and a data communication apparatus and a data communication method based on the type 2 hybrid ARQ scheme capable of improving the quality of transmission data while avoiding an increase in power consumption.
- the purpose is to provide a communication method.
- HSDPA High Speed Down-link Packet Access
- 3GPP 3rd Generation Partnership Project
- the transmission rate is changed by changing the channel codec, the spreading factor, the number of multiplexes, and (multi-level) modulation according to the line conditions, thereby improving the average throughput.
- the transmitter When performing adaptive modulation such as HSDPA, the transmitter (radio base station) needs to transmit the Modulation and Coding Scheme (MCS) to the receiver (communication terminal).
- the receiver uses this MCS information to demodulate the packet channel data and perform decoding processing.
- An object of the present invention is to provide a data communication apparatus and a data communication method based on a type 2 hybrid ARQ scheme capable of improving the quality of transmission data while avoiding an increase in power consumption.
- a data communication device based on a hybrid automatic repeat request method includes: a transmitting unit that transmits the same transmission data a plurality of times; and a transmission power for the plurality of transmissions of the same transmission data transmitted a plurality of times. And control means for controlling the transmission power of the transmission data so that the sum of the constants becomes constant.
- a data communication method based on a hybrid automatic retransmission request method transmits the same transmission data a plurality of times, and at that time, transmits the plurality of transmissions to the same transmission data transmitted a plurality of times.
- the transmission power of the transmission data is controlled so that the total transmission power for each transmission is constant.
- FIG. 1 is a diagram illustrating a procedure of a conventional type 2 hybrid ARQ scheme
- FIG. 2 is a block diagram illustrating a configuration of a transmission side of the data communication device according to the first embodiment of the present invention
- FIG. 3 is a block diagram showing a configuration of a receiving side of the data communication device according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing a procedure of a type 2 hybrid ARQ method corresponding to the first embodiment
- FIG. 5 is a block diagram showing a configuration on a transmitting side of a data communication device according to Embodiment 2 of the present invention.
- FIG. 6 is a diagram showing a procedure of a type 2 hybrid ARQ scheme corresponding to the second embodiment
- FIG. 7 shows a configuration on the transmitting side of the data communication apparatus according to Embodiment 3 of the present invention.
- FIG. 8 is a diagram showing a procedure of a type 2 hybrid ARQ system corresponding to the third embodiment.
- FIG. 2 is a block diagram showing a configuration of a transmission side (that is, a transmitter) of the data communication device according to Embodiment 1 of the present invention.
- the transmitter 100 shown in FIG. 2 is used in a data communication system based on a type 2 hybrid ARQ scheme (IR scheme) using an evening code, and includes a turbo encoding section 101, a buffer 103, a selector 105, and a spreading section. 107, a power control unit 109, a wireless transmission unit 111, an antenna 113 for both transmission and reception, a wireless reception unit 115, a despreading unit 117, a NACK signal detection unit 119, and a transmission bucket determination unit 121.
- the transmitter 100 is mounted on, for example, a base station device of a mobile communication system.
- FIG. 3 is a block diagram showing a configuration of a receiving side (that is, a receiver) corresponding to transmitter 100 shown in FIG.
- the receiver 200 shown in FIG. 3 includes an antenna 201 for transmission and reception, a radio reception unit 203, a despreading unit 205, a selector 207, a buffer 209, a turbo decoding unit 211, an error detection unit 213, and a NACK signal generation unit. 215, and a wireless transmission unit 217.
- the receiver 200 is mounted on, for example, a mobile station device of the mobile communication system.
- the above-described transmitter 100 and receiver 200 constitute an IR data communication system according to the present embodiment.
- the signals (information bits, parity bits 1, and parity bits 2) after the evening-both encoding are output to the buffer 103 respectively.
- the buffer 103 accumulates turbo-encoded signals (information bits, knowledge bits 1, and knowledge bits 2) output from the turbo encoding unit 101 in corresponding buffer areas.
- the turbo-encoded signals (information bits, parity bits 1, and parity bits 2) stored in the buffer 103 are selected by the selector 105 and then output to the spreading section 107 as a transmission bucket. Note that the selector 105 is operated by the transmission packet determination unit 121.
- the procedure for selecting (determining) the packet to be transmitted is as follows.
- a bucket of the same information bit (S) is transmitted a plurality of times (twice in the example of FIG. 4) with a time shift, and in the case of retransmission (when a NACK signal is detected), No, the packet of the parity bit 1 (P1) is transmitted, and in the case of retransmission (when a NACK signal is detected), the packet of the parity bit 2 (P2) is transmitted.
- Such a transmission procedure is determined by transmission packet determination section 121 based on the detection result of NACK signal detection section 119.
- Spreading section 107 spreads the transmission packet selected by selector 105 and outputs the result to power control section 109.
- the power control section 109 controls (changes) the transmission power (power) of the spread transmission packet for each packet.
- the value of the transmission power is kept at the value a of the transmission power for one ordinary packet. That is, a packet of information bits is transmitted at normal transmission power of 1/2, and a packet of parity bit 1 and parity bit 2 is transmitted at normal transmission power.
- the type of the transmission packet is recognized based on information from the transmission packet determination unit 121.
- the packet of the same information bit is transmitted twice, but the number of transmissions is not particularly limited.
- the spread transmission bucket whose transmission power has been determined is subjected to predetermined transmission processing such as up-conversion in the radio transmission section 111, and then transmitted wirelessly from the antenna 113.
- the receiver 200 receives the signal wirelessly transmitted from the transmitter 100 by using the antenna 201.
- the signal received by antenna 201 is subjected to predetermined reception processing such as down-conversion in radio reception section 203, and then output to despreading section 205.
- the despreading section 205 despreads the received signal input from the radio receiving section 203 and outputs the signal to the selector 207.
- the selector 207 stores the despread received signal in the buffer 209 according to the type. That is, the despread received signal is accumulated in the corresponding buffer area according to the type of the information bit, the parity bit 1, and the parity bit 2.
- the turbo decoding unit 211 performs turbo decoding when the signal is received. Specifically, when an information bit is received, a plurality of (N) received information bits are received. When the parity bit 1 is received by performing turbo decoding using the information bits (more specifically, the information bits after diversity combining), the N information bits received earlier and the parity bit 1 received this time are used. When parity bit 2 is received using parity information, parity bit 2 is received by using N information bits received earlier, parity bit 1 received earlier, and parity bit 2 received this time.
- the signal subjected to turbo decoding which has been subjected to c-mouse decoding, is extracted as user data and output to error detecting section 213.
- Error detection section 213 performs error detection on the signal after turbo decoding.
- the error detection is performed using, for example, a CRC (Cyclic Redundancy Check) code.
- the result of the error detection is output to NACK signal generation section 215.
- the NACK signal generation unit 215 generates, for example, a NACK signal when there is an error in the signal after turbo decoding, and generates an ACK signal when there is no error in the signal after turbo decoding.
- the ACK signal may be generated by a dedicated ACK signal generation unit.
- the generated NACK signal or ACK signal is subjected to predetermined transmission processing such as up-conversion in radio transmission section 217, and then transmitted from antenna 201 by radio.
- the transmitter 100 receives the NACK signal or the ACK signal wirelessly transmitted from the receiver 200 via the antenna 113.
- the NACK signal or ACK signal received by antenna 201 is subjected to predetermined reception processing such as down-compression by radio reception section 115 and then output to despreading section 117.
- the despreading section 117 despreads the received signal input from the radio receiving section 115 and outputs the despread signal to the NACK signal detecting section 119.
- NACK signal detection section 119 detects whether or not the received signal after despreading is a NACK signal.
- the detection result (that is, whether the signal is a NACK signal or an ACK signal) is output to the transmission bucket determining unit 121.
- the transmission packet determination unit 121 determines the next packet to be transmitted based on the detection result of the NACK signal detection unit 119. Specifically, at the start of operation or when an ACK signal is detected, the information bits are selected so that packets of the same information bit (S) are transmitted multiple times (N times) at staggered times.
- the parity bit 1 is selected to transmit the bucket of the parity bit 1 (P 1), and If the NACK signal is detected after the same information bit has been transmitted N times and then the parity bit 1 has been transmitted subsequently, the parity bit 2 (P 2) packet should be transmitted to transmit the parity bit 2 (P 2) packet.
- Select 2 the order in which the sockets are transmitted is: information bit (S) XN times parity bit 1 (P 1) parity bit 2 (P 2).
- the determination result of the transmission bucket determination unit 121 is output to the selector 105 and the power control unit 109 as described above.
- the power used for transmitting information bits is the same as that of the conventional method as a whole, and the same information bit is transmitted twice, so that the reception side requires 2 bits.
- the same information bit is transmitted a plurality of times (N times), and at that time, the same information bit is transmitted N times.
- the sum of N transmission powers for information bits is constant
- the transmission power of a transmission packet is set so that the transmission power of one packet of information bits at each transmission becomes 1 / N of the transmission power of one ordinary packet.
- the power used for transmitting information bits is the same as that of the conventional method, and the information bits transmitted N times are combined on the receiving side, resulting in a time diversity effect. Therefore, it is possible to improve the quality of information bits while avoiding an increase in power consumption.
- the transmission power is distributed in a manner that the total power used to transmit the information bit bucket and the parity bit packet is kept constant while maintaining the total power used for the transmission of the parity bit packet.
- the above transmission procedure may be performed by allocating a large amount of transmission power to the bucket of information bits. In this case, the performance of the turbo code can be improved, and the quality of the transmission data can be further improved.
- FIG. 5 is a block diagram showing a configuration of a transmitting side (that is, a transmitter) of the data communication device according to Embodiment 2 of the present invention.
- This transmitter 100a is used in a data communication system based on a type 2 hybrid ARQ method (IR method) using an evening code, and has a transmission function corresponding to the first embodiment shown in FIG. It has the same basic configuration as the device 100, and the same components are denoted by the same reference numerals and description thereof will be omitted.
- IR method type 2 hybrid ARQ method
- the transmitter 100a has a Doppler frequency detection unit 123.
- the Doppler frequency detector 123 detects the Doppler frequency of the received signal input from the wireless receiver 115.
- the Doppler frequency is a frequency shift (bias) based on the Doppler effect caused by the relative movement between the transmitter and the receiver. Transfer) amount. In this case, the frequency shifts to a lower frequency when the receiver 200 moves away from the transmitter 100a, and to a higher frequency when the receiver 200 approaches.
- the detection result of the Doppler frequency detector 123 is output to the transmission packet determiner 122a.
- the transmission packet determining unit 121a switches the number of transmissions (N) of the same information bit based on the detection result (Dobbler frequency) of the Doppler frequency detecting unit 123.
- the Doppler frequency when the Doppler frequency is high, the frequency diversity effect is easy to obtain, so there is no need to increase the time diversity effect that may decrease the transmission speed. ).
- the time until the information bit is transmitted N times is shortened, so that the time until data transmission is completed can be shortened.
- the Doppler frequency is low, the frequency diversity effect is difficult to obtain, and the time diversity effect needs to be increased. Therefore, the number of transmissions is increased (the value of N is increased).
- transmitter 100a multiplexes a plurality of (two in this case) data of the same user and transmits the multiplexed data simultaneously. For this reason, the transmitter 100a includes two evening encoders 101a and 10lb, and two buffers 103a and 103b.
- the signals (information bits, parity bits 1, and parity bits 2) output from the turbo encoding unit 101a after the one-time encoding are accumulated in the buffer 103a, and the turbo encoding unit Turbo-coded signals (information bits, knowledge bits 1, and knowledge bits 2) output from 101b are accumulated in buffer 103b.
- the information bits of the two data of the same user stored in the buffer 103a and the buffer 103b are sent to the selector 105a. After being selected and multiplexed, it is output to spreading section 107. Note that, here, two consecutive data of the same user input are distributed to the turbo encoding unit 101a and the turbo encoding unit 101b by a signal distribution unit (not shown). .
- the next data 2 is transmitted at the same time. That is, continuous data 1 and data 2 of the same user are multiplexed and transmitted at the same time.
- data 1 Prior to multiplexing, data 1 is turbo-coded by turbo coding section 101a, and information bits after turbo coding (S (1)), parity bit 1 (P1 (1)), parity bit 2 (P 2 (1)) is stored in the corresponding buffer 103a, and the data 2 is turbo-coded by the turbo coding unit 101b, and the information bits (S (2 )), Parity bit 1 (P 1 (2)), and parity bit 2 (P 2 (2)) are stored in the corresponding buffer 103b.
- the transmitter 100a first multiplexes two information bits S (1) and S (2) of the same user and transmits them twice simultaneously.
- the transmission power value b 1 for one packet of the information bit S (1) of the same user data 1 at each transmission is 1 2 of the transmission power value a for the normal one packet.
- B 1 a / 2)
- the transmission power value b 2 for one bucket of the information bit S (2) of the same user at the time of each transmission is shown in FIG.
- the number of data (M) of the same user in the multiplexed information bit is preferably N or less (M ⁇ N).
- the transmission power value b for one bucket of each information bit at each transmission is calculated as the normal transmission power value for one bucket.
- the sum of the transmission power of the multiplexed information bits at each transmission is the value of the transmission power for one conventional packet. This is because the number of multiplexed data of the same user must be N or less in order to make it less than a.
- the parity bits of (2) (P 1 (2), P 2 (2)) are transmitted alternately.
- the packet of the information bit and the packet of the parity bit are kept constant while the total power used for transmitting the packet of the parity bit is kept constant.
- the above transmission procedure may be performed by allocating a larger amount of transmission power to the UE as in the first embodiment.
- FIG. 7 is a block diagram showing a configuration of a transmission side (that is, a transmitter) of a data communication device according to Embodiment 3 of the present invention.
- This transmitter 10 Ob is used in a data communication system based on a type 2 hybrid ARQ scheme (IR scheme) using evening code, and a transmitter corresponding to the first embodiment shown in FIG. It has the same basic configuration as 100, and the same components are denoted by the same reference numerals, and description thereof will be omitted.
- IR scheme type 2 hybrid ARQ scheme
- a feature of the transmitter 10 Ob of the present embodiment is that data of a plurality (M) of users are multiplexed and transmitted simultaneously.
- the difference with respect to multiplexing from Embodiment 2 is that Embodiment 2 multiplexes a plurality of data of the same user, while Embodiment 2 multiplexes data of a plurality of users. Therefore, in the present embodiment, as in Embodiment 2, there are two turbo encoding units 101a and 10lb and two buffers 103a and 103b, but two Different user data is input to the 10-lb and 10-lb encoding units, respectively.
- the data of the other user B is also transmitted at the same time, that is, the two data of the user A and the user B are multiplexed and transmitted at the same time.
- the data of user A is turbo-coded by turbo coding section 10 la, and information bits (S (a)) after turbo coding, parity
- the parity bit 1 (PI (a)) and the parity bit 2 (P 2 (a)) are stored in the corresponding buffer 103a.
- the information bit (S (b)), parity bit 1 (P1 (b)), and parity bit 2 (P2 (b)) after turbo encoding are the corresponding buffer 103b Shall be stored in
- the transmitter 10 Ob multiplexes the information bit S (a) of the data of the user A and the information bit S (b) of the data of the user B, and transmits the data twice simultaneously.
- the transmission power value b1 of one packet of the information bit S (a) of the data of the user A at each transmission is 1/2 of the transmission power value a of the normal one bucket.
- the power used for transmitting the same information bit is the same as that of the conventional method (b 1 X 2 a), and the sum of the transmission powers of the multiplexed information bits at each transmission.
- the power is the same as in the conventional method, an increase in power consumption can be avoided, and a time diversity effect is provided for each of the information bits of the two data of user A and user B. Therefore, the SN ratio of information bits can be improved and the performance can be improved as compared with the conventional method.
- the number (M) of users of the information bits to be multiplexed is preferably N or less (M ⁇ N).
- the transmission power value b of one packet of each information bit at each transmission is calculated as the transmission power value of one ordinary packet.
- the number of multiplexes for different users must be N or less. Because there is.
- the data communication system using the data communication device of the present embodiment at the time of transmitting individual information bits, the information bits of a plurality of users are multiplexed and transmitted simultaneously. Therefore, data transmission efficiency (throughput) can be improved.
- the packet of the information bit and the packet of the parity bit are kept constant while the total power used for transmitting the packet of the information bit and the packet of the parity bit is kept constant.
- the above transmission procedure may be performed by allocating a larger amount of transmission power to the UE as in the first embodiment.
- the error detection is performed after transmitting the information bit a plurality of times (N times), and the parity bit is transmitted when the NACK signal is received. It is also possible to adopt a method in which error detection is performed each time a packet is transmitted, and the next information bit is transmitted when a NACK signal is received. In this method, when the SN ratio is high, information bits can be received without error using only a normal 1 / N power bucket without receiving multiple (N) buckets (information bits). May be possible. In this case, the delay time until the completion of the overnight transmission can be reduced.
- a data having the above-mentioned transmitters 100, 100a, 100b and receiver 200 The overnight communication system can be applied to downlink high-speed bucket transmission in a mobile communication system.
- the same transmission data is transmitted a plurality of times (for example, N times). Therefore, the receiving side synthesizes the received signals a plurality of times (N times). A time diversity effect can be obtained, and the quality of transmitted data can be improved.
- the transmission power of the transmission data is controlled so that the total transmission power of the plurality of (N times) for the same transmission data transmitted a plurality of times (N times) is constant.
- the same transmission power transmitted for the same transmission data transmitted a plurality of times is equal to each other, and the same transmission power transmitted a plurality of times (N times) is transmitted.
- the sum of the transmission power for the multiple times (N times) per day is equal to the transmission power of each transmission data in the method of transmitting the same transmission data only once (that is, the conventional method). That is, in order to control the transmission power of the transmission data so that the transmission power for one transmission for the same transmission data per night becomes 1 / N of the value of the transmission power of the transmission data by the conventional method, the transmission data is controlled.
- the power required for overnight transmission is the same as in the conventional method, but time diversity effects can be obtained by combining data transmitted multiple times (N times) on the receiving side. That is, it is possible to improve the quality of transmission data while avoiding an increase in power consumption.
- the quality of information bits transmitted first can be improved while avoiding an increase in power consumption.
- the number of transmissions of the same transmission data is switched according to the Doppler frequency.
- the Doppler frequency is high, the frequency diversity effect is easily obtained, so that the number of transmissions is reduced, and Low place
- the frequency diversity effect is difficult to obtain, so the number of transmissions is increased, so that the diversity effect can be obtained efficiently according to the relative movement situation between data communication devices, and the quality of transmission data can be improved.
- a plurality of transmission data of the same user are multiplexed and transmitted at the same time, so that data transmission efficiency (throughput) can be improved.
- the transmission power per the same transmission data is, for example, the same as the transmission power according to the conventional method.
- the transmission power of the transmission data can be made the same as that of the conventional method not only for the same transmission data but also for each transmission, thus avoiding an increase in power consumption. can do.
- redundant bits when redundant bits are retransmitted, redundant bits corresponding to a plurality of transmission data of the same user are transmitted in order (alternately).
- the timing of decoding a plurality of transmission data of the user can be leveled, and the delay of the decoding process can be reduced.
- transmission data of a plurality of users is multiplexed and simultaneously transmitted, so that data transmission efficiency (throughput) can be improved.
- the transmission power per the same transmission data is set to, for example, the same value as the transmission power according to the conventional method.
- the sum of the transmission power at each transmission for the transmission data of multiple users that are multiplexed and transmitted at the same time for example, must be the same as the transmission power of the conventional method. Therefore, the transmission power of the transmission data can be made the same as that of the conventional method not only for the same transmission data but also for each transmission, and an increase in power consumption can be avoided. .
- the redundant bits corresponding to the transmission data of a plurality of users are transmitted sequentially (alternately), so that a plurality of multiplexed and simultaneously transmitted data are transmitted.
- the timing for decoding the transmission data of the user can be averaged, and the delay of the decoding process can be reduced.
- a turbo code is used.
- the performance can be improved, and the quality of transmission data can be further improved.
- the present invention can be applied to a mobile communication system, particularly a mobile communication system based on a hybrid automatic repeat request method.
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- Detection And Prevention Of Errors In Transmission (AREA)
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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DE60231208T DE60231208D1 (de) | 2001-06-29 | 2002-06-25 | Datenkommunikationseinrichtung und datenkommunikationsverfahren |
KR1020037002840A KR100563344B1 (ko) | 2001-06-29 | 2002-06-25 | 데이터 통신 장치 및 데이터 통신 방법 |
EP02743721A EP1401139B1 (en) | 2001-06-29 | 2002-06-25 | Data communication device and data communication method |
US10/362,456 US7349713B2 (en) | 2001-06-29 | 2002-06-25 | Data communication apparatus and data communication method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2001198401A JP3583388B2 (ja) | 2001-06-29 | 2001-06-29 | データ通信装置およびデータ通信方法 |
JP2001-198401 | 2001-06-29 |
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WO2003003647A1 true WO2003003647A1 (fr) | 2003-01-09 |
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US (1) | US7349713B2 (ja) |
EP (2) | EP1401139B1 (ja) |
JP (1) | JP3583388B2 (ja) |
KR (1) | KR100563344B1 (ja) |
CN (1) | CN100514902C (ja) |
DE (1) | DE60231208D1 (ja) |
WO (1) | WO2003003647A1 (ja) |
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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 |
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 |
US7913145B2 (en) | 2003-05-28 | 2011-03-22 | Mitsubishi Denki Kabushiki Kaisha | Re-transmission control method and communication device |
JP2005080115A (ja) * | 2003-09-02 | 2005-03-24 | Matsushita Electric Ind Co Ltd | 無線送信装置及び無線送信方法 |
US8908496B2 (en) * | 2003-09-09 | 2014-12-09 | Qualcomm Incorporated | Incremental redundancy transmission in a MIMO communication system |
US7668125B2 (en) * | 2003-09-09 | 2010-02-23 | Qualcomm Incorporated | Incremental redundancy transmission for multiple parallel channels in a MIMO communication system |
BRPI0617270B1 (pt) | 2005-10-11 | 2019-05-21 | Panasonic Intellectual Property Corporation Of America | Aparelho de transmissão e método de transmissão |
WO2008156414A2 (en) | 2007-06-18 | 2008-12-24 | Telefonaktiebolaget L M Ericsson (Publ) | Uplink transmission enhancement by tti bundling |
US9055458B2 (en) * | 2013-02-07 | 2015-06-09 | Qualcomm Incorporated | Method and system for dynamic AMPDU duration control in a wireless communication system |
JP6325394B2 (ja) * | 2014-08-25 | 2018-05-16 | 株式会社東芝 | Icカード、携帯可能電子装置、及び、icカード処理装置 |
US10367621B2 (en) | 2014-10-27 | 2019-07-30 | Qualcomm Incorporated | Fountain HARQ for reliable low latency communication |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06244814A (ja) * | 1993-02-18 | 1994-09-02 | Mitsubishi Electric Corp | 通信装置 |
JPH08195709A (ja) * | 1995-01-17 | 1996-07-30 | Nippon Telegr & Teleph Corp <Ntt> | 移動通信方式 |
WO1996026582A1 (fr) * | 1995-02-23 | 1996-08-29 | Ntt Mobile Communications Network Inc. | Procede de transmission a vitesse variable, et emetteur et recepteur utilisant ce procede |
JP2001119426A (ja) * | 1999-10-15 | 2001-04-27 | Ntt Docomo Inc | 誤り制御方法及びその方法を使用する通信システム |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5822318A (en) * | 1994-07-29 | 1998-10-13 | Qualcomm Incorporated | Method and apparatus for controlling power in a variable rate communication system |
JP2596392B2 (ja) * | 1994-11-16 | 1997-04-02 | 日本電気株式会社 | データレート検出器 |
US5872775A (en) * | 1996-10-30 | 1999-02-16 | Qualcomm Incorporated | Method and apparatus for performing rate determination |
US7184426B2 (en) * | 2002-12-12 | 2007-02-27 | Qualcomm, Incorporated | Method and apparatus for burst pilot for a time division multiplex system |
US6101168A (en) * | 1997-11-13 | 2000-08-08 | Qualcomm Inc. | Method and apparatus for time efficient retransmission using symbol accumulation |
US6421357B1 (en) | 1998-06-24 | 2002-07-16 | Ericsson Inc. | High-penetration radiocommunication system using a compact character set |
FI109252B (fi) * | 1999-04-13 | 2002-06-14 | Nokia Corp | Tietoliikennejärjestelmän uudelleenlähetysmenetelmä, jossa on pehmeä yhdistäminen |
JP2001044969A (ja) * | 1999-08-02 | 2001-02-16 | Mitsubishi Electric Corp | 移動体通信システム、基地局および移動通信端末、ならびに再送制御方法 |
JP2001160776A (ja) * | 1999-12-01 | 2001-06-12 | Nec Corp | 送信電力制御周期の設定方法、送信電力制御周期設定装置および送信電力制御周期設定システム |
DE60040805D1 (de) * | 1999-12-20 | 2008-12-24 | Research In Motion Ltd | Hybrid-wiederholungsaufforderungsystem und -verfahren |
JP3953249B2 (ja) | 2000-01-20 | 2007-08-08 | 東光電気株式会社 | 切削液の油分回収装置 |
-
2001
- 2001-06-29 JP JP2001198401A patent/JP3583388B2/ja not_active Expired - Lifetime
-
2002
- 2002-06-25 EP EP02743721A patent/EP1401139B1/en not_active Expired - Lifetime
- 2002-06-25 EP EP08022381A patent/EP2040406A3/en not_active Withdrawn
- 2002-06-25 CN CNB028024486A patent/CN100514902C/zh not_active Expired - Fee Related
- 2002-06-25 DE DE60231208T patent/DE60231208D1/de not_active Expired - Lifetime
- 2002-06-25 WO PCT/JP2002/006342 patent/WO2003003647A1/ja active IP Right Grant
- 2002-06-25 KR KR1020037002840A patent/KR100563344B1/ko not_active IP Right Cessation
- 2002-06-25 US US10/362,456 patent/US7349713B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06244814A (ja) * | 1993-02-18 | 1994-09-02 | Mitsubishi Electric Corp | 通信装置 |
JPH08195709A (ja) * | 1995-01-17 | 1996-07-30 | Nippon Telegr & Teleph Corp <Ntt> | 移動通信方式 |
WO1996026582A1 (fr) * | 1995-02-23 | 1996-08-29 | Ntt Mobile Communications Network Inc. | Procede de transmission a vitesse variable, et emetteur et recepteur utilisant ce procede |
JP2001119426A (ja) * | 1999-10-15 | 2001-04-27 | Ntt Docomo Inc | 誤り制御方法及びその方法を使用する通信システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP1401139A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1401139A1 (en) | 2004-03-24 |
EP1401139B1 (en) | 2009-02-18 |
CN1465156A (zh) | 2003-12-31 |
JP2003018131A (ja) | 2003-01-17 |
US7349713B2 (en) | 2008-03-25 |
EP2040406A2 (en) | 2009-03-25 |
KR100563344B1 (ko) | 2006-03-22 |
EP2040406A3 (en) | 2011-06-22 |
JP3583388B2 (ja) | 2004-11-04 |
EP1401139A4 (en) | 2007-04-04 |
US20050114744A1 (en) | 2005-05-26 |
CN100514902C (zh) | 2009-07-15 |
KR20040014961A (ko) | 2004-02-18 |
DE60231208D1 (de) | 2009-04-02 |
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