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WO2013082785A1 - Procédé et appareil de transmission de données fondé sur harq, équipement utilisateur, programme d'ordinateur et support de stockage - Google Patents

Procédé et appareil de transmission de données fondé sur harq, équipement utilisateur, programme d'ordinateur et support de stockage Download PDF

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Publication number
WO2013082785A1
WO2013082785A1 PCT/CN2011/083705 CN2011083705W WO2013082785A1 WO 2013082785 A1 WO2013082785 A1 WO 2013082785A1 CN 2011083705 W CN2011083705 W CN 2011083705W WO 2013082785 A1 WO2013082785 A1 WO 2013082785A1
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WIPO (PCT)
Prior art keywords
retransmitted
logical channel
harq process
data
harq
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/083705
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English (en)
Inventor
Yu Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ST Ericsson SA
Original Assignee
ST Ericsson SA
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 ST Ericsson SA filed Critical ST Ericsson SA
Priority to PCT/CN2011/083705 priority Critical patent/WO2013082785A1/fr
Publication of WO2013082785A1 publication Critical patent/WO2013082785A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

Definitions

  • This invention relates to a wireless communication technology, and in particular to a HARQ-based data transmission method, a HARQ-based data transmission apparatus, user equipment, a computer program, and a storage medium.
  • HSUPA High Speed Uplink Packet Access
  • 3GPP the 3rd Generation Partner Project
  • a HARQ -based data transmission method in the prior art mainly includes the following steps.
  • Step 101 a network side transmits physical resource information to UE
  • E-AGCH E-DCH Absolute Grant Channel
  • Step 102 after receiving the physical resource information, the UE constructs an MAC-e PDU (Protocol Data Unit) based on the physical resource, and selects an idle HARQ process for transmitting the MAC-e PDU.
  • MAC-e PDU Protocol Data Unit
  • Step 103 the UE transmits the MAC-e PDU to the network side over an
  • E-PUCH E-DCH Physical Uplink Channel
  • Step 104 if not receiving the MAC-e PDU, the network side feeds back
  • Step 1 OS after receiving the NACK message, the UE retransmits the MAC-e PDU over the E-PUCH using the HARQ process.
  • Step 106 the network side receives the MAC-e PDU and feeds back AC (ackowtedgement) message towards the UE over the E-HICH.
  • Step 107 after receiving the ACK message, the UE empties the HARQ process and the corresponding MAC-e PDU.
  • Fig.1 is a signaling diagram showing that the UE successfully retransmits the MAC-e PDU.
  • Fig.2 is a signaling diagramshowing that the UE fails to retransmit the MAC-e PDU, and mainly includes the following steps.
  • Steps 201-205 they are identical to Steps 101-105 and a description thereof will be omitted.
  • Step 206 the UE starts a timer to count the time for retransmitting the MAC-e PDU (and/or starts a counter to count the number of retransmission).
  • the UE will empty the HARQ process and the MAC-e PDU.
  • the HARQ process becomes an idle process again and can be used to transmit a new MAC-e PDU.
  • Step 207 if still not receiving the MAC-e PDU, the network side feeds back the NAC message towards the UE over the E-HICH.
  • Step 208 after receiving the NACK message, the UE determines whether the timer expires (or whether the number counted by the counter reaches the preset number). If yes, the procedure proceeds to Step 210, and otherwise the procedure proceeds to Step 209.
  • Step 209 the UE retransmits the MAC-e PDU over the E-PUCH using the HARQ process.
  • Step 210 the UE empties the HARQ process and the corresponding MAC-e PDU.
  • TTI Transmission Time Interval
  • Embodiments of the present invention provide a HARQ-based data transmission method, a HARQ-based data transmission apparatus, user equipment, a computer program, and a storage medium When ensuring that new data
  • a first logical channel corresponding to the new data has a priority higher than a second logical channel corresponding to the retransmitted data. If the first logical channel has a priority not higher than the second logical channel, physical resource assigned in the TTI is used for transmission of the retransmitted data. If the first logical channel has a priority higher than the second logical channel, it is determined whether a retransmitted HARQ process corresponding to the retransmitted data is an emergent one. If the retransmitted HARQ process is an emergent one, the physical resource is used for transmission of the retransmitted data.
  • the physical resource is used for transmission of the new data.
  • Both the priority of the logical channel corresponding to the new data and the emergency of the HARQ process corresponding to the retransmitted data are taken into consideration, thus it will ensure that the new data corresponding to the logical channel with a high priority is transmitted in time and meanwhile the emergent HARQ process corresponding to the retransmitted data is handled in time, thereby to balance transmission of the new data and the retransmitted data as possible and to achieve an optimal throughput of the HARQ-based transmission system.
  • a retransmitted HARQ process corresponding to the retransmitted data is of the same type as the physical resource assigned in the current ⁇ may be determined firstly. If the retransmitted HARQ process is of a type different from the physical resource, the physical resource may be directly used for transmission of the new data, without considering the priority of the logical channel and the emergency of the retransmitted HARQ process, so as to shorten the processing flow.
  • the logical channel corresponding to the new data and the logical channel corresponding to the retransmitted data are the same may be determined firstly. If the logical channel corresponding to the new data is the same as the logical channel corresponding to the retransmitted data, h is unnecessary to take the priority of the logical channel and the emergency of the retransmitted HARQ process into consideration, and the physical resource is directly used for transmission of the retransmitted data, so as to shorten the processing flow.
  • whether the retransmitted HARQ processes are emergent ones may be determined sequentially from the retransmitted HARQ process which transmits data firstly according to the time when the retransmitted HARQ processes start to transmit data, so as to ensure the most emergent retransmitted HARQ process can be handled in time.
  • whether a retransmitted HARQ process is an emergent one may be determined by determining whether a retransmission number of the retransmitted HARQ process exceeds a preset number, or by determining whether a number of the remaining transmission time intervals is less than a preset threshold before the timer of the retransmitted HARQ expires, or by determining whether the retransmitted data is of a preset type, or a combination of the above. There are various methods for the determination.
  • the HARQ-based data transmission may be of SAW (stop and wait) type.
  • FIGs.1 and 2 are signaling diagrams showing a HARQ-based data transmission method in the prior art.
  • Fig.3 is a view showing entities of an MAC layer of a HSUPA system.
  • FIG.4 is a schematic view showing a data path of the MAC layer at a UE side of the HSUPA system.
  • Fig.5 is a flow chart showing a HARQ-based data transmission method according to an embodiment of the present invention.
  • Fig.6 is another flow chart showing a HARQ-based data transmission method according to an embodiment of the present invention.
  • Fig.7 is another flow chart showing a HARQ-based data transmission method according to an embodiment of the present invention.
  • Fig.8 is a block diagram showing a HSUPA data transmission apparatus according to an embodiment of the present invention.
  • the HARQ-based data transmission method, HARQ-based data transmission apparatus, user equipment, computer program, and storage medium of the present invention are described by taking the HSUPA system as an example.
  • the HARQ-based data transmission method, HARQ-based data transmission apparatus, user equipment, computer program, and storage medium of the present invention may also be applied to other HARQ-based transmission system.
  • Fig.3 is a view showing entities of an MAC (Media Access Control) layer of a HSUPA system according to an embodiment of the present invention.
  • an MAC-es entity and an MAC-e entity are added at the MAC layer.
  • both MAC-es and MAC-e must be defined, and they are generally referred to as MAC-es/e.
  • MAC-es is defined on Node B (a node of a base station), and MAC-e is defined on RNC (Radio Network Controller).
  • Fig.4 is a schematic view showing a data path of the MAC layer at the UE side of the HSUPA system.
  • MAC-e is connected to a PHY (physical layer) via an E-DCH (Enhanced Dedicated Channel), and the data to be transmitted is MAC-e PDU.
  • MAC-es is connected to MAC-d via an MAC-d flow, and the data to be transmitted is MAC-d PDU.
  • MAC-d is connected to a RLC (Radio Link Control) layer via logical channels (DCCH/DTCH) with different priorities.
  • the data from each logical channel enters the E-DCH through the MAC-d to which H belongs, and multiplexing of multiple logical channels is effected at the MAC-e entity.
  • at most IS logical channels may be multiplexed at the E-DCH.
  • the data from a plurality of logical channels may be transmitted within an identical MAC-e PDU.
  • Data transmission of the MAC layer is effected by a plurality of HARQ processes.
  • HARQ processes There are two types of HARQ processes, Le., Scheduled type and non-Scheduled type. If physical resource is of a scheduled type, the MAC layer will select an idle process from the HARQ processes of the scheduled type to transmit the MAC-e PDU. If the physical resource is of a non-scheduled type, the MAC layer will select an idle process from the HARQ processes of the non-scheduled type to transmit the MAC-e PDU.
  • One HARQ process can be used for transmit only one MAC-e PDU.
  • the HARQ process cannot be used for transmission of another MAC-e PDU, unless it has successfully transmitted the current MAC-e PDU to the network side, or the current MAC-e PDU has been emptied after several transmission failures.
  • Fig.5 is a flow chart showing a HARQ- based data transmission method according to an embodiment of the present invention.
  • the data transmission method is applied to UE and includes the following steps.
  • Step SO 1 when there exist both new data and retransmitted data to be transmitted in the current ⁇ , it is determined whether a first logical channel corresponding to the new data has a priority higher than a second logical channel corresponding to the retransmitted data. If yes, the procedure proceeds to Step 502, and otherwise the process proceeds to Step S04. [0046]
  • the new data is a new MAC-e PDU to be transmitted, and the retransmitted data is an MAC-e PDU to be retransmitted.
  • the new data may be multiplexed by data from one or more logical channels.
  • a priority of the first logical channel corresponding to the data may be the priority of the logical channel.
  • a priority of the first logical channel corresponding to the new data may be an average value of the priorities of the plurality of logical channels, or the priority of a certain logical channel in the plurality of logical channels, e.g., the priority of the logical channel with the highest priority in the plurality of logical channels.
  • the retransmitted data may also be multiplexed by the data from one or more logical channels.
  • a priority of the second logical channel corresponding to the retransmitted data may be the priority of the logical channel
  • the priority of the second logical channel corresponding to the retransmitted data may be an average value of the priorities of the plurality of logical channels, or the priority of a certain logical channel in the plurality of logical channels, e.g., the priority of the logical channel with the highest priority in the plurality of logical channels.
  • Step S02 h is determined whether a retransmitted HARQ process corresponding to the retransmitted data is an emergent one. If yes, the procedure proceeds to Step 504, and otherwise the procedure proceeds to Step 503.
  • Step 503 the physical resource assigned in the TTl is used for transmission of the new data.
  • Step 504 the physical resource is used for transmission of the retransmitted data.
  • the physical resource is that assigned at the network side in the current TTl, including power, code and/or times lot.
  • whether a retransmitted HARQ process corresponding to the retransmitted data is of the same type as the physical resource assigned in the current ⁇ may be determined firstly. If the retransmitted HARQ process is of a different type from the physical resource, the physical resource may be directly used for transmission of the new data, without considering the priority of the logical channel and the emergency of the retransmitted HARQ process, so as to shorten the processing flow.
  • Fig.6 is another flow chart showing a HARQ-based data transmission method according to an embodiment of the present invention.
  • the data transmission method is applied to UE and includes the following steps.
  • Step 601 in a current TTI, after receiving physical resource information transmitted by a network side, it is determined whether there exists a retransmitted
  • Step 602 and otherwise the procedure proceeds to Step 607.
  • the UE may receive the physical resource information transmitted by the network side via E-AGCH.
  • Step 602 h is determined whether the retransmitted HARQ process is of the same type as the physical resource. If yes, the procedure proceeds to Step 603, and otherwise the procedure proceeds to Step 607.
  • Step 603 it is determined whether a first logical channel corresponding to new data is the same as a second logical channel corresponding to the retransmitted data. If yes, the procedure proceeds to Step 606, and otherwise the procedure proceeds to Step 604.
  • Step 604 it is determined whether the first logical channel has a priority higher than the second logical channel. If yes, the procedure proceeds to Step 605, and otherwise the procedure proceeds to Step 606.
  • Step 60S it is determined whether the retransmitted HARQ process is an emergent one. If yes, the procedure proceeds to Step 606, and otherwise the procedure proceeds to Step 607.
  • Step 606 the physical resource is used for transmission of the retransmitted data.
  • Step 607 the physical resource is used for transmission of the new data.
  • retransmitted HARQ process is an emergent one from the retransmitted HARQ process which transmits data firstly according to the time when the retransmitted HARQ processes start to transmit data.
  • Fig.7 is another flow chart showing a HARQ-based data transmission method according to an embodiment of the present invention.
  • the data transmission method is applied to UE and includes the following steps.
  • Steps 701 to 704 are similar to Steps 601 -604 in Fig.6 and a description thereof are omitted herein.
  • Step 70S it is determined whether the retransmitted HARQ process that transmits data firstly is an emergent one. If yes, the procedure proceeds to Step 708, and otherwise the procedure proceeds to Step 706.
  • Step 706 it is determined whether there are other retransmitted HARQ processes. If yes, the procedure proceeds to Step 707, and otherwise the procedure proceeds to Step 709.
  • Step 707 it is determined whether another retransmitted HARQ process is an emergent one. If yes, the procedure proceeds to Step 708, and otherwise the procedure proceeds to Step 706.
  • Step 708 the physical resource is used for transmission of the retransmitted data.
  • Step 709 the physical resource is used for transmission of the new data.
  • whether a retransmitted HARQ process corresponding to retransmitted data is an emergent one may be determined by using, but not limited to, the following methods.
  • ( 1 ) Determining whether a retransmission number of the retransmitted HARQ process exceeds a preset number. If the retransmission number exceeds the preset number, e.g., four, it means that the retransmitted HARQ process is an emergent one, otherwise it means that the retransmitted HARQ process is not an emergent one.
  • a preset number e.g., four
  • the HARQ-based data transmission method according to the embodiment of the present invention is adapted to a system such as TD-SCDMA or WCDMA.
  • An embodiment of the present invention further provides a computer program including instructions which, when executed by a processor, are configured in such a manner that the processor can execute the HARQ-based data transmission method according to the above-mentioned embodiments.
  • An embodiment of the present invention further provides a storage medium that stores the above-mentioned computer program.
  • an embodiment of the present invention further provides a HARQ-based data transmission apparatus, including: a priority
  • determination unit 801 which, when there exist both new data and retransmitted data to be transmitted in a current ⁇ , determines whether a first logical channel corresponding the new data has a priority higher than a second logical channel corresponding to the retransmitted data; a first processing unit 802 which, when the first logical channel has a priority not higher than the second logical channel, uses physical resource assigned in the TTl for transmission of the retransmitted data; an emergency determination unit 803 which, when the first logical channel has a priority higher than the second logical channel, determines whether a retransmitted HARQ process corresponding to the retransmitted data is an emergent one; a second processing unit 804 which, when the retransmitted HARQ process is an emergent one, uses the physical resource for transmission of the retransmitted data; and a third processing unit 80S which, when the retransmitted HARQ process is not an emergent one, uses the physical resource for transmission of the new data.
  • the retransmitted HARQ process corresponding to the retransmitted data is of the same type as the physical resource assigned in the current TTI may be determined firstly. If the retransmitted HARQ process is of a different type from the physical resource, the physical resource may be directly used for transmission of the new data, without considering the priority of the logical channel and the emergency of the retransmitted HARQ process, so as to shorten the processing flow.
  • the HARQ-based data transmission apparatus may further includes: a first determination unit which determines whether there exists the retransmitted HARQ process; a second determination unit which, when there exists the retransmitted HARQ process, determines whether the retransmitted HARQ process is of the same type as the physical resource; and a fourth processing unit which, when there does not exist the retransmitted HARQ process or the retransmitted HARQ process is of a different type from the physical resource, uses the physical resource for transmission of the new data.
  • the first, second, third and fourth functional processing units may or may not partly or fully coincide, e.g. reside within one or more physical processing units.
  • the priority determination unit when the retransmitted HARQ process is of the same type as the physical resource, determines whether the first logical channel has a priority higher than the second logical channel.
  • whether the logical channel corresponding the new data is the same as the logical channel corresponding to the retransmitted data may be determined firstly. If the logical channel corresponding to the new data is the same as the logical channel corresponding to the retransmitted data, it is unnecessary to take the priorities of the logical channels and the emergency of the retransmitted HARQ process, and the physical resource is directly used for
  • HARQ-based data transmission apparatus may further include: a third determination unit which determines whether the first logical channel is the same as the second logical channel; and a fifth processing unit which, when the logical channel is the same as the second logical channel, uses the physical resource for transmission of the retransmitted data.
  • the priority determination unit when the first logical channel is different from the second logical channel, determines whether the first logical channel has a priority higher than the second logical channel.
  • retransmitted HARQ process is an emergent one may be determined from the retransmitted HARQ process that transmits data firstly according to the time when the retransmitted HARQ processes start to transmit data.
  • the emergency determination unit may include the following subunhs: a fourth determination unit which, when there is only one retransmitted HARQ process, determines whether the retransmitted HARQ process is an emergent one; and a fifth determination unit which, when there are a plurality of retransmitted HARQ processes, sequentially determines whether the retransmitted HARQ processes are emergent ones from the retransmitted HARQ process that transmits data firstly according to the time when the retransmitted HARQ processes start to transmit data.
  • determination unit determines whether the retransmitted HARQ process is an emergent one using various methods, e.g., determining whether a retransmission number of the retransmitted HARQ process exceeds a preset number; and/or determining whether a number of the remaining transmission time intervals is less than a preset threshold before a timer of the retransmitted HARQ process expires; and/or determining whether the retransmitted data is of a preset type.
  • An embodiment of the present invention further provides a user equipment including the HARQ-based data transmission apparatus according to the above embodiments.
  • An emergent HARQ process for retransmitted data may be handled in time when ensuring that new data corresponding to a logical channel with a high priority is transmitted in time, so as to balance transmission of new data and retransmitted data as possible and to achieve an optimal throughput of the

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de transmission de données fondé sur HARQ, un appareil de transmission de données fondé sur HARQ, un équipement utilisateur, un programme d'ordinateur et un support de stockage. Lorsqu'il existe aussi bien de nouvelles données que des données retransmises à envoyer dans un TTI courant, il est déterminé si un premier canal logique correspondant aux nouvelles données a une priorité plus élevée qu'un second canal logique correspondant aux données retransmises. Quand le premier canal logique a une priorité qui n'est pas supérieure à celle du second canal logique, une ressource physique attribuée dans le TTI est utilisée pour transmettre les données retransmises. Quand le premier canal logique a une priorité plus élevée que celle du second canal logique, il est déterminé si un processus HARQ de retransmission correspondant aux données retransmises est un processus émergent. Quand le processus HARQ de retransmission est un processus émergent, la ressource physique est utilisée pour transmettre les données retransmises, autrement la ressource physique est utilisée pour transmettre les nouvelles données. La priorité du canal logique correspondant aux nouvelles données et l'urgence du processus HARQ correspondant aux données retransmises sont prises en considération, ce qui assurera que les nouvelles données correspondant au canal logique ayant une priorité élevée sont transmises à temps et par ailleurs le processus HARQ émergent correspondant aux données retransmises est géré à temps, ce qui permet d'équilibrer la transmission des nouvelles données et des données retransmises dans la mesure du possible et d'obtenir un débit optimal du système de transmission fondé sur HARQ.
PCT/CN2011/083705 2011-12-08 2011-12-08 Procédé et appareil de transmission de données fondé sur harq, équipement utilisateur, programme d'ordinateur et support de stockage Ceased WO2013082785A1 (fr)

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PCT/CN2011/083705 WO2013082785A1 (fr) 2011-12-08 2011-12-08 Procédé et appareil de transmission de données fondé sur harq, équipement utilisateur, programme d'ordinateur et support de stockage

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WO2017003048A1 (fr) * 2015-07-02 2017-01-05 엘지전자(주) Procédé de transmission et de réception de données de liaison montante dans un système de communications sans fil, et dispositif associé
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CN111107583A (zh) * 2019-03-25 2020-05-05 维沃移动通信有限公司 sidelink重传请求BSR发送方法和终端设备
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WO2017003048A1 (fr) * 2015-07-02 2017-01-05 엘지전자(주) Procédé de transmission et de réception de données de liaison montante dans un système de communications sans fil, et dispositif associé
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CN113364565A (zh) * 2019-03-22 2021-09-07 展讯通信（上海）有限公司 资源分配方法及装置、存储介质、终端
CN111107583A (zh) * 2019-03-25 2020-05-05 维沃移动通信有限公司 sidelink重传请求BSR发送方法和终端设备
CN111107583B (zh) * 2019-03-25 2023-12-08 维沃移动通信有限公司 sidelink重传请求BSR发送方法和终端设备
CN110535555A (zh) * 2019-03-28 2019-12-03 中兴通讯股份有限公司 一种确定传输优先级的方法、装置和计算机可读存储介质
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CN114762382A (zh) * 2019-09-30 2022-07-15 上海诺基亚贝尔股份有限公司 用于未决数据单元的发送的资源选择

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