WO2005025090A1 - Appareil emetteur radio et procede d'emission radio - Google Patents

Appareil emetteur radio et procede d'emission radio Download PDF

Info

Publication number
WO2005025090A1
WO2005025090A1 PCT/JP2004/012922 JP2004012922W WO2005025090A1 WO 2005025090 A1 WO2005025090 A1 WO 2005025090A1 JP 2004012922 W JP2004012922 W JP 2004012922W WO 2005025090 A1 WO2005025090 A1 WO 2005025090A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
retransmission
transmissions
estimated
coding rate
Prior art date
Application number
PCT/JP2004/012922
Other languages
English (en)
Japanese (ja)
Inventor
Yuichi Hagiwara
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2005025090A1 publication Critical patent/WO2005025090A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/022—Channel estimation of frequency response
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the present invention relates to a wireless transmission device and a wireless transmission method. Background technology ''
  • HSDPA High Speed Downlink Packet Access
  • W-CDMA Wideband Code Division Multiple Access
  • HSD PA adopts HARQ.
  • HARQ Hybrid Automatic ReQuest
  • ARQ Automatic ReQuest
  • the HSDPA-compatible base station employs the “HARQ function” shown in step S 17 in the transmission data processing flowchart shown in FIG.
  • the data to be transmitted is subjected to turbo coding with a coding rate of 1-3, and the HARQ function changes the rate to match the number of physical channel bits actually transmitted.
  • the hardware configuration of the HARQ function is configured as shown in the block diagram of FIG. 2.
  • the second rate matching unit 54 what bits are transmitted using the systematic priority parameter s and the rate matching parameter r Has been determined.
  • each data of Systematic hereinafter, referred to as “systematic”
  • Parityl hereinafter, referred to as “parity 1” and “parity 2”
  • parity 1 and “parity 2”
  • systematic data transmission priority or parity 1, 2 transmission priority It also determines the pattern in which the bits of parity 1 and 2 are thinned out (or repeated).
  • HSDPA-compatible base stations adopt the Constellation Rearrangement di.
  • Phase rearrangement when the modulation method is 16 QAM (Quadrature Amplitude Modulation).
  • the constellation relocation parameter b that changes the constellation of 16 QAM is used as shown in the 16 QAM relocation processing in step S20 in FIG.
  • the gain from the rearrangement of chillons is obtained.
  • HARQ parameters systematic priority parameter s, rate matching parameter r
  • constellation relocation parameter b constellation relocation parameter b
  • the transmission bits are determined by changing the rate matching pattern and constellation rearrangement (applied to 16 QAM only).
  • Tables 1 and 2 show examples of setting the RV parameter Xrv when the modulation scheme is QP SK and 16 Q AM in the HSDPA compatible base station.
  • Table 1 shows the setting value of the RV parameter Xrv of QP SK based on the 3GPP TS25.212 standard
  • Table 2 shows the setting value of the RV parameter Xrv of 16QAM based on the 3GPP TS25.212 standard.
  • transmission is performed by defining an RV parameter for each transmission count as shown in Tables 3 and 4.
  • An object of the present invention is to reduce the number of retransmissions by setting an RV parameter for an appropriate number of transmissions in consideration of the influence of the Doppler frequency, enabling setting of a transmission bit pattern corresponding to a change in the Doppler frequency in a transmission signal. It is an object of the present invention to provide a radio transmission device and a radio transmission method that can perform the above.
  • the purpose of this is to set the RV parameter for the appropriate number of transmissions taking into account the effect of the Doppler frequency, to enable the setting of the transmission bit pattern corresponding to the change in the Doppler frequency in the transmission signal from the terminal, and to reduce the number of retransmissions. This can be achieved by reducing it.
  • FIG. 1 is a flowchart showing transmission data processing in a conventional HARQ-compatible base station.
  • FIG. 2 is a block diagram showing the configuration of a HARQ function unit of a conventional HARQ-compatible base station
  • FIG. 3 is a block diagram illustrating a main configuration of a transmitting apparatus according to Embodiment 1 of the present invention.
  • FIG. 4 is a diagram illustrating an example of an RV parameter table used in the transmitting apparatus according to Embodiment 1.
  • FIG. 5 is a block diagram illustrating a main configuration of a transmitting apparatus according to Embodiment 2 of the present invention
  • FIG. 6 is a diagram illustrating an example of an RV parameter table used in the transmitting apparatus according to Embodiment 2.
  • FIG. 7 is a block diagram illustrating a main configuration of a transmitting apparatus according to Embodiment 3 of the present invention
  • FIG. 8 is a diagram illustrating an initial state of an RV estimation transmission count section in the transmitting apparatus according to Embodiment 3. The figure of the
  • FIG. 9A is a diagram for explaining the operation of the RV estimation transmission count section in the transmitting apparatus according to Embodiment '3.
  • FIG. 9B illustrates the operation of the estimated RV transmission count section in the transmitting apparatus according to Embodiment 3.
  • FIG. 9C is a diagram for explaining the operation of the RV estimation transmission count section in the transmitting apparatus according to Embodiment 3.
  • FIG. 9D is a diagram for explaining the operation of the RV estimation transmission count section in the transmitting apparatus according to Embodiment 3.
  • FIG. 10 is a diagram showing an example of an RV parameter table used in the transmitting apparatus according to Embodiment 3.
  • FIG. 3 is a block diagram showing a main configuration of an HSDPA compatible transmission apparatus according to Embodiment 1 of the present invention.
  • Transmitting apparatus 100 mainly includes transmission number estimating section 101, RV pattern selecting section 102, and channel coding section 103.
  • the transmission count estimator 101 includes an Ack (Acknowledgment) / Nack (Negative Acknowledgment) signal from an uplink HS-DPCCH (High Speed-Dedicated Physical Channel) received from a receiving terminal (not shown), and a transmission 1
  • Ack Acknowledgment
  • Nack Negative Acknowledgment
  • the number of transmissions that could have been transmitted to the receiving terminal is estimated based on the number of times, and the estimated number of transmissions is output to the RV pattern selection unit 102.
  • the transmission count estimating unit 1 ⁇ 1 increases the transmission estimation count by one when the Nack signal is received and outputs it. If the Ack / Nack signal cannot be received at the expected reception timing, the transmission is successful. Since it seems to have failed, output without increasing the estimated number of transmissions.
  • the RV pattern selection unit 102 stores at least two RV parameter tables for QPSK and 16 QAM as shown in FIG. 4, and the estimated number of transmissions input from the transmission number estimation unit 101 And the transmission signal from the terminal received by the base station Based on the relationship between the estimated and input Dobbler frequency f D and the corresponding RV parameter Xrv (for example, RV_a_T 1) from the RV parameter table, it is output to the channel coding unit 103.
  • the RV parameter table shown in Fig. 4 divides the frequency band of the Doppler frequency i D into three ranges (0 ⁇ f ⁇ fl, f1 ⁇ f ⁇ f2, f2 ⁇ f ⁇ f3), and
  • the RV parameter Xrv (Doppler frequency fD: 0 ⁇ f ⁇ f1: RV_a_T1,..., RV—a—TN, etc.) is set for each estimated number of transmissions within the range of the Doppler frequency fD.
  • the parameters corresponding to QPSK and 16 QAM shown in Tables 1 and 2 above are set in these RV parameters Xrv.
  • the channel encoding unit 103 performs a channel encoding process based on the RV parameter Xrv input from the RV pattern selection unit 102, and performs rate matching pattern and constellation rearrangement (16 QAM) of input transmission data. (Applicable only to the above) Transmit the changed transmission bit as HS—DSCH (High Speed-Downlink Shared Channel).
  • HS—DSCH High Speed-Downlink Shared Channel
  • the transmitting apparatus of the present embodiment it is possible to retransmit the transmission data by setting the RV parameter for the appropriate number of transmissions in consideration of the influence of the Doppler frequency in the transmission signal. Can be reduced.
  • FIG. 5 is a block diagram showing a main configuration of HSDPA-compatible transmitting apparatus 200 according to Embodiment 2 of the present invention.
  • Transmitting apparatus 200 differs from the first embodiment in that RV pattern is selected not only by Doppler frequency but also by coding rate (including modulation scheme).
  • Transmitting apparatus 200 mainly includes transmission number estimating section 201, coding rate calculating section 202, RV pattern selecting section 203, and channel coding section 204, and power.
  • transmission number estimation section 201 and channel coding section 204 have the same functions as transmission number estimation section 101 and channel coding section 103 shown in Embodiment 1, and therefore description thereof will be omitted.
  • the coding rate calculation unit 202 assumes that the modulation scheme and the number of codes are constant during the first transmission and the retransmission, and that the transmission data, the number of transmissions, the number of codes, and the modulation scheme (for example, The coding rate is calculated based on QPSK or 16QAM), and the calculated coding rate is output to RV pattern selecting section 203. It is assumed that the coding rate calculation unit 202 calculates the coding rate only at the time of the first transmission.
  • the RV pattern selection unit 203 stores at least two RV parameter tables as shown in FIG. 6 for QPSK and 16QAM, and calculates the modulation scheme, the estimated transmission number input from the transmission number estimation unit 201, Based on the correspondence between the Doppler frequency fD estimated and input at the time of transmission and the coding rate input from the coding rate calculation unit 202, the corresponding RV parameter Xrv (for example, , RV—fl_a_T 1) are selected and output to the channel encoder 204.
  • the RV parameter table shown in Fig. 6 divides the frequency band of the Doppler frequency f D into two ranges (f D f (f 1), f (f 1) ⁇ ⁇ D), and sets the coding rate. It is divided into three ranges (O x x xl, X 1 ⁇ ⁇ X 2, x 2 xl), and the RV parameter Xrv (Doppler frequency f D ⁇ f (f 1), coding rate 0 ⁇ x ⁇ xl: RV_a_T 1, ⁇ . ⁇ , RV—a— ⁇ , etc.). These RV parameters Xrv are as shown in Table 1 above. The parameters corresponding to QPS and 16 QAM shown in Table 2 are set.
  • the RV parameter for the appropriate number of transmissions corresponding to the Doppler frequency and the coding rate at the time of the first transmission of transmission data is set, and the transmission data is retransmitted. And the number of retransmissions can be reduced.
  • FIG. 7 is a block diagram of transmitting apparatus 300 for HSDPA according to Embodiment 3 of the present invention. It is a block diagram which shows a part structure.
  • the transmitter 300 always calculates the coding rate for each number of transmissions, and if the number of transmission codes changes and the coding rate changes significantly or if the modulation method is changed, the Doppler frequency may change significantly.
  • Embodiment 2 is different from Embodiment 2 in that it is possible to cope with the case, and that the RV parameter is selected based on the Doppler frequency, the modulation scheme, and the coding rate even during retransmission.
  • the transmitting apparatus 300 includes a transmission number estimation section 301, an RV estimation transmission number section 302, a coding rate calculation section 303, an RV pattern selection section 304, and a channel encoding section 300. Mainly composed of
  • the transmission number estimation unit 301, the coding rate calculation unit 303, and the channel encoding unit 300 include the transmission number estimation unit 101 described in Embodiment 1 and the coding described in Embodiment 2. Since it has the same function as the rate calculator 202 and the channel encoder 103 shown in the first embodiment, description thereof will be omitted.
  • the RV estimation transmission number section 302 includes an input modulation scheme, an estimated transmission number input from the transmission number estimation section 301, a Doppler frequency fD estimated and input at the time of transmission, and coding. Based on the coding rate input from rate calculating section 303, the number of estimated RV transmissions shown in FIGS. 8 and 9 is set and output to RV pattern selecting section 304.
  • FIG. 8 shows a case of the initial state before transmission, and the number of RV estimation transmissions is all “0” regardless of the modulation scheme and the coding rate.
  • 9A to 9D show the settings of the estimated number of RV transmissions at the time of the first transmission after the transmission is started, the first retransmission, the second retransmission, and the third retransmission.
  • Figure 9A shows the setting of the number of RV estimation transmissions at the time of the first transmission.
  • the modulation method is QPSK :, the Doppler frequency (fP f1), and the coding rate (0 ⁇ x ⁇ x1)
  • the number of estimated RV transmissions is “1”.
  • the time of the first retransmission shown in FIG. 9B in the case of the same Dobbler frequency ⁇ D, coding rate, and modulation scheme as at the time of the first transmission, the number of RV estimation transmissions is incremented to “2”.
  • the RV pattern selection unit 304 stores at least two RV parameter tapes for QP SK and 16QAM as shown in FIG. 10, the modulation method, and the RV estimation transmission input from the RV estimation transmission number unit 302. Based on the correspondence between the number of times, the Doppler frequency f D estimated and input at the time of transmission, and the coding rate input from the coding rate calculation unit 303, the corresponding RV parameter Xrv ( For example, RV—fl_a_T 1) is selected and output to the channel coding unit 305.
  • the transmission data can be transmitted.
  • the RV parameter for the appropriate number of transmissions corresponding to the Doppler frequency and the code rate, transmission data can be retransmitted, and the number of retransmissions can be reduced.
  • the RV parameter for the appropriate number of transmissions considering the influence of the Doppler frequency is set, and the change of the Doppler frequency in the transmitted signal is changed. Since it is possible to set the transmission bit pattern corresponding to, the number of retransmissions can be reduced.
  • the coding rate is close to 1 and the Dobler frequency is high
  • the systematic bits of the Turbo code when the systematic bits of the Turbo code are transmitted, it may not be transmitted to the receiving terminal device side.
  • the systematic bit becomes large information.
  • the Doppler frequency is high, such as sending a larger number of systematic bits than when the Doppler frequency is low. It becomes possible to reduce the number of retransmissions as compared with the case where there is no retransmission.
  • the present invention relates to a radio transmission apparatus and a radio transmission method, and is particularly suitable for use in a radio transmission apparatus and a radio transmission method of a hybrid ARQ scheme for retransmitting transmission data to a reception apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Transceivers (AREA)

Abstract

Une partie de sélection de motif RV (102), qui contient au moins deux tables de paramètres RV pour QPSK et pour 16QAM, sélectionne, sur la base de la correspondance entre un nombre estimé d'émissions entrées à partir d'une partie d'estimation du nombre d'émissions (101) et une fréquence Doppler (fD) d'entrée estimée à partir d'un signal d'émission, un paramètre RV correspondant (Xrv) (par ex., RV_a_T1) issu des tables de paramètres RV, et transmet le paramètre RV sélectionné vers une partie de codage de canal (103). Il est ainsi possible de définir un paramètre RV, qui correspond à un nombre approprié d'émissions compte tenu de l'influence de la fréquence Doppler, puis un motif de bits d'émissions correspondant à une modification de la fréquence Doppler du signal d'émission, ce qui permet de réduire le nombre d'émissions.
PCT/JP2004/012922 2003-09-02 2004-08-31 Appareil emetteur radio et procede d'emission radio WO2005025090A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-310551 2003-09-02
JP2003310551A JP2005080115A (ja) 2003-09-02 2003-09-02 無線送信装置及び無線送信方法

Publications (1)

Publication Number Publication Date
WO2005025090A1 true WO2005025090A1 (fr) 2005-03-17

Family

ID=34269651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/012922 WO2005025090A1 (fr) 2003-09-02 2004-08-31 Appareil emetteur radio et procede d'emission radio

Country Status (2)

Country Link
JP (1) JP2005080115A (fr)
WO (1) WO2005025090A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108667572A (zh) * 2017-03-31 2018-10-16 维沃移动通信有限公司 一种业务数据传输方法、基站及终端

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2254366B1 (fr) 2008-03-12 2019-02-27 Panasonic Intellectual Property Corporation of America Dispositif de radiocommunication, système de radiocommunication et procédé de radiocommunication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09298526A (ja) * 1996-03-07 1997-11-18 Kokusai Denshin Denwa Co Ltd <Kdd> データ通信における誤り制御方法及び装置
JP2003018131A (ja) * 2001-06-29 2003-01-17 Matsushita Electric Ind Co Ltd データ通信装置およびデータ通信方法
JP2003244063A (ja) * 2002-02-15 2003-08-29 Matsushita Electric Ind Co Ltd 基地局装置及びパケット伝送方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09298526A (ja) * 1996-03-07 1997-11-18 Kokusai Denshin Denwa Co Ltd <Kdd> データ通信における誤り制御方法及び装置
JP2003018131A (ja) * 2001-06-29 2003-01-17 Matsushita Electric Ind Co Ltd データ通信装置およびデータ通信方法
JP2003244063A (ja) * 2002-02-15 2003-08-29 Matsushita Electric Ind Co Ltd 基地局装置及びパケット伝送方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108667572A (zh) * 2017-03-31 2018-10-16 维沃移动通信有限公司 一种业务数据传输方法、基站及终端

Also Published As

Publication number Publication date
JP2005080115A (ja) 2005-03-24

Similar Documents

Publication Publication Date Title
KR101214345B1 (ko) 적응 하이브리드 ａｒｑ 알고리즘
JP4064385B2 (ja) 移動通信システムにおけるパケット再伝送のための送受信装置及び方法
US6631127B1 (en) Apparatus and method for dynamically selecting an ARQ method
JP3751564B2 (ja) データの送信方法
JP4755198B2 (ja) インクリメント冗長送信に対する選択的応答のための装置及び方法
US7532600B2 (en) Method and system for using hybrid ARQ in communication systems that use multiple input multiple output antenna systems
US7289567B2 (en) Apparatus and method for transmitting and receiving data using partial chase combining
US7400607B2 (en) Method and apparatus for bit scrambling for packet transmission/reception in a wireless communication system
KR101116419B1 (ko) 정보 콘텐트의 전송 방법
US20050249163A1 (en) Method and apparatus for determining rate matching parameters for a transport channel in a mobile telecommunication system
KR100678156B1 (ko) 무선 패킷 데이터 송신기 및 수신기와 송신 및 수신방법
US7620872B2 (en) Apparatus and method for selecting redundancy version
JP2006246457A (ja) データを伝送するための適切なｈａｒｑ再伝送スキームを選択するための方法、およびそのような方法のための基地局およびプログラムモジュール
KR20040093702A (ko) Ａｒｑ 송신 다이버시티 방안을 위한 콘스텔레이션 재배치
US7178089B1 (en) Two stage date packet processing scheme
JP4224337B2 (ja) 無線送信装置および無線送信方法
JP2008053854A (ja) データの再送方法、通信装置、およびコンピュータプログラム
JP4067984B2 (ja) 受信機
WO2005025090A1 (fr) Appareil emetteur radio et procede d&#39;emission radio
KR100797459B1 (ko) 하이브리드 자동 재전송 요구 시스템에서의 데이터 전송방법
JP2010022049A (ja) データの再送方法および通信装置
WO2024099857A1 (fr) Dispositif et procédé de communication
WO2005008948A1 (fr) Dispositif de communication de donnees et procede de communication de donnees

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 BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG 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 NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase