WO2012130158A1 - 数据传输方法、装置及系统 - Google Patents

数据传输方法、装置及系统 Download PDF

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Publication number
WO2012130158A1
WO2012130158A1 PCT/CN2012/073299 CN2012073299W WO2012130158A1 WO 2012130158 A1 WO2012130158 A1 WO 2012130158A1 CN 2012073299 W CN2012073299 W CN 2012073299W WO 2012130158 A1 WO2012130158 A1 WO 2012130158A1
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WIPO (PCT)
Prior art keywords
harq
data packet
attribute
adaptive
packet
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Ceased
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PCT/CN2012/073299
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English (en)
French (fr)
Inventor
吕永霞
李超君
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP12765863.1A priority Critical patent/EP2685772B1/en
Publication of WO2012130158A1 publication Critical patent/WO2012130158A1/zh
Priority to US14/043,027 priority patent/US9871645B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0092Indication of how the channel is divided
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1887Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1896ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825Adaptation of specific ARQ protocol parameters according to transmission conditions

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method, apparatus, and system. Background technique
  • the LTE (Long Term Evolution) system supports the Time Division Duplexing (TDD) mode, in which the uplink (UL, Uplink) and the downlink (DL, Downlink) use the same frequency carrier. At the same time.
  • the LTE TDD system can adjust the Uplink-Downlink Configuration semi-statically according to different service types to meet the uplink and downlink asymmetric service requirements.
  • the uplink-downlink ratio is configured to be semi-statically configured, and the configured uplink-downlink ratio does not match the instantaneous service type, so that resources cannot be effectively utilized.
  • the dynamic TDD subframe application technology can be used, that is, the flexible sub frame is configured in the radio frame, which is flexible.
  • a subframe can be dynamically configured as an uplink subframe or a downlink subframe.
  • 1 is a schematic diagram of a dynamic intra-frame dynamic TDD subframe application, which indicates that subframes 3, 4, 8, and 9 of each radio frame are flexible subframes.
  • the inventor finds a dynamic retransmission request in a dynamic TDD subframe application scenario. Therefore, the PDCCH (Physical Downlink Share Channel) is used to schedule a PUSCH (Physical Uplink Share Channel). Control Channel, physical downlink control channel) transmission, PUSCH transmission, uplink ACK (Acknowledgement, correct response) /NACK (Non-Acknowledgement) feedback and PUSCH retransmission are performed according to a certain timing relationship, that is, there is a timing relationship between uplink and downlink transmission, and there is also a timing relationship for uplink transmission.
  • a certain timing relationship that is, there is a timing relationship between uplink and downlink transmission, and there is also a timing relationship for uplink transmission.
  • a flexible subframe when a flexible subframe is configured as an uplink subframe at the current time and uplink transmission is performed, for example, when PUSCH transmission is performed, due to the existence of such a timing relationship, the flexible subframe needs to be in a later predetermined slot.
  • Performing corresponding uplink transmission for example, performing feedback of the corresponding uplink ACK/NACK, etc., thereby causing the flexible subframe to be unable to be configured as a downlink subframe within a certain period of time, thereby weakening the gain of configuring the flexible subframe, thereby reducing the downlink Throughput.
  • the embodiments of the present invention provide a data transmission method, apparatus, and system.
  • flexible subframes can be configured more flexibly, and downlink throughput is improved.
  • An aspect of the present invention provides a data transmission method, including: configuring a HARQ synchronization attribute of a data packet, where the HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ, and configuring the data packet when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the HARQ process number sending downlink control information for scheduling the data packet to the user equipment.
  • An aspect of the present invention provides a base station, including: an attribute configuration unit, configured to configure a HARQ synchronization attribute of a data packet, where the HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ; and a process configuration unit, configured to perform HARQ synchronization of the data packet.
  • the attribute is configured as asynchronous HARQ
  • the HARQ process ID of the data packet is configured
  • the control information sending unit is configured to send downlink control information for scheduling the data packet to the user equipment.
  • Another aspect of the present invention provides a data transmission method, including: receiving downlink control information for scheduling a data packet sent by a base station; determining, according to the downlink control information, a HARQ synchronization attribute of the data packet, where the HARQ synchronization attribute includes a synchronous HARQ Or asynchronous HARQ; when the HARQ synchronization attribute of the foregoing data packet is configured as asynchronous HARQ, determining the HARQ process ID of the data packet according to the downlink control information.
  • a user equipment including: a control information receiving unit, configured to receive downlink control information, which is sent by a base station, for scheduling a data packet, and an attribute determining unit, configured to determine the data according to the downlink control information.
  • a HARQ synchronization attribute of the packet the foregoing HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ; and a process determining unit, configured to determine, according to the downlink control information, a HARQ process of the data packet, when the HARQ synchronization attribute of the data packet is configured to be asynchronous HARQ number.
  • a further aspect of the present invention provides a data transmission system comprising: the base station and the user equipment as described above.
  • the data transmission method, device and system provided by the embodiment of the present invention configure a HARQ synchronization attribute including synchronous HARQ and asynchronous HARQ for a data packet by using a base station, and configure a data packet when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the HARQ process number sends downlink control information for scheduling the foregoing data packet to the user equipment. Therefore, in a dynamic TDD application scenario, the problem that the timing relationship cannot be dynamically configured according to the current channel conditions and service requirements can be flexibly configured, so that flexible subframes can be more flexibly configured as uplink and downlink subframes, and downlink throughput is improved. .
  • FIG. 1 is a schematic diagram of a dynamic intra-frame dynamic TDD subframe application
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another data transmission method according to an embodiment of the present invention
  • Schematic diagram FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • Uplink and downlink ratios there are 7 kinds of uplink and downlink ratios in the LTE TDD system, as shown in Table 1, where 'D, indicating the downlink subframe, 'U, indicating the uplink subframe; 'S, indicating the special subframe, mainly used for downlink transmission. .
  • Table 1 in the case of various uplink and downlink ratios, the time domain resources reserved for downlink services account for 40% to 90%.
  • the data packet referred to in the embodiment of the present invention preferably refers to an uplink shared channel.
  • the data packet can be dynamically scheduled or semi-persistently scheduled.
  • the foregoing UL-SCH is a type of transport channel (Transport Channel), and is an information transmission service provided from a physical layer to a MAC (Medium Access Control) layer.
  • the data packet transmitted for the first time is simply referred to as the initial transmission packet.
  • the retransmitted data packet is simply referred to as a retransmission packet.
  • a data packet is configured with a HARQ process ID, that is, the HARQ process ID of the first transmission packet and the retransmission packet corresponding to the same data packet are the same.
  • the fixed subframe in the embodiment of the present invention refers to a subframe in which the uplink and downlink attributes cannot be dynamically changed within a valid time of each TDD uplink and downlink ratio, for example, 0, 1, 2, 5 in FIG. 6 and 7 subframes.
  • the fixed subframe includes a fixed uplink subframe and a fixed downlink subframe, where the fixed uplink subframe refers to a subframe used as an uplink transmission in a fixed subframe, and the fixed downlink subframe refers to a subframe used as a downlink transmission in a fixed subframe.
  • the flexible subframe referred to in the present invention refers to a subframe that can be dynamically or semi-statically configured as an uplink subframe or a downlink subframe within a valid time of each TDD up/down ratio.
  • the system notifies the current 7 types of uplink and downlink subframe ratios of the user equipment of the existing version (for example, LTE Rel-8/9/10) by using broadcast signaling, for users of the evolved system (for example, LTE Rel-11/12, etc.)
  • the system can notify different uplink and downlink subframe ratios semi-statically or dynamically (can be the existing 7 ratios, or add the downlink subframe ratio), for example, when the existing system and the evolution
  • the existing system and the evolved system may be configured with different subframe attributes (that is, whether the subframe is configured as an uplink subframe or a downlink).
  • Sub-frames therefore, can be regarded as flexible subframes.
  • the existing system and the evolved system are configured in three uplink and downlink subframes of 0, 1, and 2, subframes 3, 4, 8, and 9 can be regarded as flexible.
  • Subframe Therefore, the flexible subframe configuration in the present invention can be implemented simply by notifying the uplink and downlink subframe ratio of the user equipment in the evolved system.
  • the embodiment of the present invention provides a data transmission method, including: configuring hybrid automatic retransmission of data packets, in order to enable flexible configuration of flexible subframes and improve downlink throughput.
  • the HARQ synchronization attribute is requested, and the HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ.
  • the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ, the HARQ process number of the data packet is configured; and the downlink control for scheduling the data packet is sent to the user equipment. information.
  • the data transmission method provided by this embodiment includes the following content.
  • the HARQ synchronization attribute of the base station configuration data packet where the HARQ synchronization attribute includes synchronous HARQ or asynchronous HARQ.
  • the base station may further send a signaling notification message to the user equipment, where the signaling notification message includes flexible subframe configuration information, where the flexible subframe configuration information includes a flexible subframe. At least one of subframe number information and attribute information.
  • the base station needs to determine a dynamic TDD subframe configuration before performing data transmission to the user equipment, that is, it is required to determine which subframes in the radio frame are flexible subframes, and determine the attributes of each flexible subframe.
  • the base station may determine which subframes in the radio frame are flexible subframes by using at least the following two methods.
  • the subframe number of the flexible subframe can be configured in a pre-defined manner, that is, the subframe number of the flexible subframe in the radio frame is preset, and the subframe number of the flexible subframe is pre-configured on both sides of the base station and the user equipment. Set the information.
  • the base station can configure the subframe number of the flexible subframe in the radio frame according to the current channel environment and the traffic volume.
  • the base station needs to send a signaling notification message to the user equipment, and notify the user equipment of the subframe number of the flexible subframe that is configured.
  • the signaling notification message may be carried by the downlink control channel, or may be carried by the high layer signaling. For example, in the specific implementation process, when using high-level letters When the signaling notification message is carried, the reliability of the subframe number transmission of the flexible subframe can be improved.
  • the base station determines the attributes of each flexible subframe, that is, determines whether the flexible subframe is used as an uplink subframe or as a downlink subframe.
  • the base station can configure the attributes of the flexible subframe according to the current channel environment and traffic. After the configuration of the flexible subframe is completed, the base station needs to send a signaling notification message to the user equipment, and notify the user equipment of the configured flexible subframe.
  • the signaling notification message may be carried by using a downlink control channel.
  • the downlink control channel herein refers to a channel in a downlink control region, such as a PDCCH.
  • the downlink control region is located in the first 1-4 OFDM (Orthogonal Frequency Division Multiplexing) symbols of each subframe, and mainly transmits physical layer signaling of layer 1 and/or layer 2.
  • the signaling message may also be high layer signaling.
  • the base station may further determine which channels and signals need to be configured on the flexible subframe. After the base station determines the channel and signal configuration of the flexible subframe, it needs to send a signaling to notify the user.
  • the signaling content includes which channels and signals are configured on the flexible subframe, and the resource configuration of the channel signals.
  • the base station needs to configure the HARQ synchronization attribute of the data packet.
  • the HARQ synchronization attribute refers to the transmission of data packets by synchronous HARQ (synchronous HARQ) or asynchronous HARQ (asynchronous HARQ).
  • the HARQ synchronization attribute of the data packet is synchronous HARQ, that is, the data packet is transmitted by using the synchronous HARQ manner, the timing relationship of the retransmission packet of the data packet with respect to the initial transmission packet is predetermined.
  • asynchronous HARQ When the HARQ synchronization attribute of the data packet is asynchronous HARQ, that is, when the data is transmitted by the asynchronous HARQ, the timing relationship of the retransmission packet of the data packet with respect to the initial transmission packet is not fixed.
  • asynchronous HARQ can also be called asynchronous HARQ.
  • the base station may configure the HARQ synchronization attribute of the data packet by using at least the following three methods.
  • Method 1 Configure the HARQ synchronization properties of the packet in a predefined manner. For example, when the first transmitted data packet (that is, the initial transmission packet) is transmitted on the fixed uplink subframe, the HARQ synchronization attribute of the data packet is preset to be synchronous HARQ, and the initially transmitted data packet (ie, the initial transmission packet) is used as When transmitting on the flexible subframe of the uplink subframe, the HARQ synchronization attribute of the data packet is preset to be asynchronous HARQ; or the HARQ synchronization attribute of the data packet previously transmitted in the uplink subframe is asynchronous HARQ. After the setting is completed, the setting information of the HARQ synchronization attribute of the data packet is configured on both sides of the base station and the user equipment.
  • Method 2 Configuring the HARQ synchronization attribute of the data packet by using the high layer signaling, that is, the base station configures the HARQ synchronization attribute of the data packet according to the channel environment and the service requirement, and sends a signaling message to the user equipment, where the signaling message includes the HARQ of the data packet. Synchronization properties.
  • the base station sets the HARQ synchronization attribute of the data packet that is initially transmitted on the flexible subframe that is the uplink subframe to be asynchronous HARQ, and the base station sends a signaling message to the user equipment to notify the user equipment of the setting information; or, the base station sets The HARQ synchronization attribute of the data packet currently transmitted on the uplink subframe is a synchronous HARQ or an asynchronous HARQ, and the base station sends a signaling message to the user equipment to notify the user equipment of the setting information.
  • the high layer signaling (High Layer Signaling) is relative to the physical layer signaling, and the signaling with a slower transmission frequency from the higher layer includes: radio resource control (RRC) signaling.
  • RRC radio resource control
  • MAC Media Access Control
  • broadcast signaling For example, when the above-mentioned high-layer signaling adopts RRC signaling, not only has high reliability, but also the HARQ synchronization attribute of each user equipment's data packet can be separately configured.
  • Method 3 Configure the HARQ synchronization attribute of the data packet by using Downlink Control Information (DCI). For details, see the following.
  • DCI Downlink Control Information
  • the base station configures the HARQ adaptive attribute of the data packet while configuring the HARQ synchronization attribute of the data packet.
  • HARQ adaptive attribute refers to adaptive HARQ (adaptive HARQ)
  • semi-adaptive HARQ or non-adaptive HARQ means to transmit scheduling information of retransmission packets of data packets.
  • scheduling information such as MCS (Modulation and Coding Scheme) and frequency domain resource allocation indicating the retransmission packet of the data packet may be reconfigured according to channel conditions.
  • MCS Modulation and Coding Scheme
  • frequency domain resource allocation indicating the retransmission packet of the data packet may be reconfigured according to channel conditions.
  • the scheduling information indicating the MCS and the frequency domain resource allocation of the retransmission packet of the data packet is consistent with the scheduling information of the initially transmitted data packet, or according to the predefined The rules change.
  • the scheduling information of the retransmission packet of the data packet is divided into two parts, that is, the first scheduling information and the second scheduling information.
  • the second scheduling information indicating the retransmission packet of the data packet is reconfigured according to the channel condition, and the first scheduling information indicating the retransmission packet of the data packet is consistent with the first scheduling information indicating the data packet that is initially transmitted, or
  • the first scheduling information indicating the retransmission packet of the data packet changes according to a predefined rule.
  • the foregoing first scheduling information includes: at least one of MCS, TPC (Transmit Power Control), and Demodulation Reference Signal (DMRS, Cyclic Shift) information.
  • the first scheduling information does not require bit indication, some bits can be saved from the DCI.
  • the first scheduling information is MCS
  • the 5-bit MCS and Redundancy version (RV) field can notify the RV with only 2 bits, which can save 3 bits.
  • the first scheduling information is TPC
  • 2 bits can be saved;
  • the first scheduling information is DMRS CS, 3 bits can be saved.
  • the DMRS CS domain may also be redefined as a DMRS cyclic shift and orthogonal cover code (OCC) indication domain. Therefore, when the first scheduling information is a DMRS cyclic shift and When the OCC indicates, it can save 3 bits.
  • OCC orthogonal cover code
  • the HARQ adaptive attribute of the data packet can be configured to be adaptive HARQ or non-adaptive.
  • the base station can configure the HARQ adaptive attribute of the data packet to be adaptive HARQ or non-adaptive HARQ as needed.
  • the base station sends a PDCCH indicating the retransmission of the data packet to the user equipment at a preset time, and notifies the user equipment of the HARQ adaptation of the data packet.
  • the attribute is adaptive HARQ.
  • the base station When the base station configures the HARQ adaptive attribute of the data packet to be non-adaptive HARQ, the base station does not send the PDCCH indicating the retransmission of the data packet at a preset time, so that the user equipment knows that the HARQ adaptive attribute of the data packet is non- Adaptive HARQ.
  • the HARQ adaptive attribute of the data packet may be configured to be adaptive HARQ or semi-adaptive HARQ.
  • the base station can configure the HARQ adaptive attribute of the data packet to be adaptive HARQ or semi-adaptive HARQ as needed.
  • the base station sends a DCI indicating the retransmission of the data packet to the user equipment, so that the user equipment knows the HARQ process number of the retransmitted data packet.
  • the base station configures a HARQ process ID of the data packet.
  • the base station needs to configure the HARQ process ID of the data packet.
  • the flexible subframe can be configured as an uplink subframe, it is necessary to increase the number of HARQ processes before the HARQ process number of the data packet is configured.
  • the number of added HARQ processes may be configured in at least the following two ways.
  • Manner 1 Configure the number of added HARQ processes in a predefined manner.
  • the corresponding increased number of HARQ processes may be set in advance according to different uplink and downlink subframe ratios. For example, when the uplink-downlink ratio is 0, the HARQ process is not added. When the uplink-downlink ratio is 1, two HARQ processes are added. When the uplink-downlink ratio is 2, four HARQ processes are added.
  • the added HARQ may be configured according to the number of flexible subframes in each radio frame. The number of processes, for example, if there are 4 flexible subframes in each radio frame, the configuration adds 4 HARQ processes.
  • Manner 2 The base station determines the number of increased HARQ processes, and notifies the user equipment of the increased number of HARQ processes determined by signaling. For example, the high-level signaling is used to notify the user equipment of the increased number of HARQ processes, so that the transmission of the increased number of HARQ processes is reliable.
  • the configuration method of the HARQ process number of the initial packet and the retransmission packet of the data packet may be the same or different.
  • the HARQ process ID of the initial packet of the data packet may be configured by using at least the following two methods.
  • the HARQ process ID of the initial packet of the packet in a predefined manner. For example, when the HARQ synchronization attribute of the data packet that is initially transmitted on all the uplink subframes is asynchronous HARQ, the correspondence between the HARQ process number of the initial transmission packet of the data packet and the subframe number of the uplink subframe is preset. Such as - the corresponding relationship. For example, assuming that the radio frame transmission data in the format shown in FIG. 1 is used, the HARQ process numbers of the packets initially transmitted in the subframes 2, 3, 4, 7, 8, and 9 are 0, 1, 2, respectively. 3, 4 and 5, such that when the initially transmitted data packet scheduled by the DCI is transmitted on the flexible subframe 8, the HARQ process number of the data packet is 4.
  • the data packet is preset.
  • the HARQ process number of the initial transmission packet and the subframe number of the flexible subframe, such as the corresponding relationship. For example, assuming that the radio frame transmission data in the format shown in FIG. 1 is used, the HARQ process numbers of the packets initially transmitted on the flexible subframes 3, 4, 8, and 9 are 0, 1, 2, and 3, respectively.
  • the HARQ of the data packet The process number is 2.
  • the foregoing method 1 can save the DCI overhead by adding an additional number of DCI bits to indicate the HARQ process number of the initial packet of the data packet.
  • the base station adds a certain number of bits to the DCI sent to the user equipment according to the number of HARQ processes that need to be set, and is used to indicate the HARQ process number of the initial packet of the data packet. For example, when the HARQ synchronization attribute of the initially transmitted data packet in all uplink subframes is asynchronous HARQ, 3 bits are added to the DCI sent to the user equipment, and the HARQ process ID of the initial transmission packet of the data packet is indicated. . Or, when the HARQ synchronization attribute of the data packet that is initially transmitted on the flexible subframe that is the uplink subframe is asynchronous HARQ, add 2 bits in the DCI sent to the user equipment, and indicate the initial transmission packet of the data packet. The HARQ process number. Applying the method 2 indicates the HARQ process number of the initial packet of the data packet, so that the transmission of the initial packet of the data packet is more flexible.
  • the method for configuring the HARQ process ID of the initial packet of the data packet in a predefined manner may be referred to as an implicit HARQ process number indication method of the initial transmission packet, and the initial transmission of the data packet will be configured through the DCI.
  • the method of the HARQ process number of the packet may be referred to as an explicit HARQ process number indication method of the initial transmission packet.
  • the HARQ process ID of the retransmission packet of the configuration packet is displayed by displaying the HARQ process number indication method.
  • the number of bits indicating the HARQ process ID may be determined according to the number of processes supported by the asynchronous HARQ. For example, when the system supports the number of four asynchronous HARQ processes, two DCI bits are needed to indicate the HARQ process ID of the retransmission packet of the data packet. .
  • the HARQ adaptive attribute of the retransmission packet of the data packet is adaptive HARQ, a certain number of bits are added to the DCI sent to the user equipment, and the HARQ process number of the retransmission packet of the data packet is indicated.
  • the HARQ of the retransmission packet of the data packet may be indicated without increasing the number of bits of the DCI.
  • the process number, and the idle bit in the DCI that is, the DCI bit of the retransmission packet of the data packet is indicated by the DCI bit of the first scheduling information field (for semi-adaptive HARQ, the DCI indicating the retransmission packet of the data packet)
  • the first scheduling information in the middle does not need to be notified, so there is a free bit).
  • the base station sends downlink control information for scheduling the data packet to the user equipment.
  • the base station may send downlink control information for scheduling the data packet to the user equipment according to the HARQ synchronization attribute and the HARQ adaptive attribute of the foregoing data packet, or according to the HARQ synchronization attribute, the HARQ adaptive attribute, and the HARQ process number of the data packet.
  • the user equipment may receive the DCI configured by the base station to the user equipment by using the PDCCH, and obtain the scheduling information of the data packet.
  • the DCI may be used to indicate the HARQ process number of the data packet in addition to the scheduling information of the data packet.
  • the DCI may also indicate the HARQ synchronization attribute of the data packet.
  • the following describes the packet configuration of two asynchronous HARQs in detail.
  • One of the configurations is specifically that the initial packet of the data packet is indicated by an implicit HARQ process number, and the retransmission packet of the data packet adopts semi-adaptive HARQ (hereinafter referred to as configuration one), and the other configuration is specifically the initial transmission of the data packet.
  • the packet is indicated by an explicit HARQ process number, and the retransmission packet of the data packet adopts adaptive HARQ (hereinafter referred to as configuration 2).
  • configuration 2 adaptive HARQ
  • the initial packet of the data packet is indicated by an implicit HARQ process number, that is, the correspondence between the pre-numbers. Therefore, the HARQ process of the data packet can be determined by the subframe number of the uplink subframe of the initial transmission packet carrying the data packet. number.
  • the retransmission packet of the data packet adopts semi-adaptive HARQ, and therefore, the number of idle bit indications in the DCI indicating the retransmission of the data packet can be used. According to the HARQ process number of the package. Therefore, in configuration one, the DCI indicating the initial transmission packet and the retransmission data packet can indicate the process number without additionally increasing the number of bits of the DCI.
  • the downlink allocation indicator (DAI, Downlink Assignment Index) field in the DCI may be used to indicate the HARQ synchronization attribute of the data packet.
  • DCI Downlink Assignment Index
  • the number of bits of the DCI is not required to be added to indicate the HARQ synchronization attribute of the data packet.
  • a certain number of bits, that is, attribute indication bits may be added to the DCI to indicate the HARQ synchronization attribute of the data packet.
  • the DAI field of the DCI When the DAI field of the DCI is used to indicate the HARQ synchronization attribute of the data packet, the DAI field has 2 bits, and the HARQ synchronization attribute of the data packet can be indicated by the DAI by at least the following four methods.
  • Method 1 A bit in the DAI field is used to indicate the HARQ synchronization attribute of the data packet. For example, when the bit indicating the HARQ synchronization attribute of the data packet is “0”, it indicates that the scheduled data packet adopts synchronous HARQ, and when the bit indicating the HARQ synchronization attribute of the data packet is “1”, it indicates that the scheduled data packet is asynchronous. HARQ.
  • Method 2 One bit in the DAI field is used to indicate whether a synchronous HARQ data packet is scheduled, and another bit in the DAI domain is used to indicate whether an asynchronous HARQ data packet is scheduled.
  • MSB Most Significant Bit
  • LSB Least Significant Bit
  • the LSB value When the LSB value is "1", it indicates that the asynchronous HARQ packet is scheduled, otherwise it indicates that the asynchronous HARQ packet is not scheduled. Moreover, when the values of both the MSB and the LSB are "1", it indicates that two types of data packets, synchronous HARQ and asynchronous HARQ, are scheduled. Using method two, one DCI can simultaneously schedule synchronous HARQ and asynchronous HARQ packets, which saves DCI overhead. It should be noted that simultaneous synchronous HARQ and asynchronous HARQ are scheduled. Both packets are not sent on the same subframe.
  • Method 3 A state of the bits of the DAI field is used to indicate that the scheduled data packet uses the synchronous HARQ, and another state of the bit of the DAI domain is used to indicate that the scheduled data packet uses the asynchronous HARQ. For example, when the bit of the DAI field is "00", it indicates that the scheduled data packet uses synchronous HARQ. When the bit of the DAI field is "1 1", it indicates that the scheduled data packet adopts asynchronous HARQ.
  • N N is an integer greater than 0 and less than 4.
  • the states are used to indicate that the scheduled data packet uses synchronous HARQ
  • the remaining (4-N) states are used to indicate that the scheduled data packet uses asynchronous HARQ.
  • the remaining (4-N) state of the DAI domain (“01", "10", "11" indicates that the scheduled packet uses asynchronous HARQ.
  • the status of the DAI field When the status of the DAI field is "01”, it indicates that one asynchronous HARQ packet is scheduled. When the status of the DAI field is "10”, it indicates that two asynchronous HARQ packets are scheduled, and the status of the DAI domain is "1 1". " At the time, it indicates that 3 asynchronous HARQ packets are scheduled.
  • the packet uses synchronous HARQ
  • the remaining (4-N) states of the DAI domain (“01", “10", "11") indicate that the scheduled data packet uses asynchronous HARQ.
  • n indicates that DCI is transmitted on the downlink subframe n
  • k and m are predefined subframe offset values.
  • the initial packet of the data packet is indicated by an explicit HARQ process number
  • the retransmission packet of the data packet adopts adaptive HARQ, thus indicating the initial data packet and the retransmitted data packet.
  • the DCI needs to increase the number of DCI bits to indicate the HARQ process number.
  • the DCI indicating the synchronous HARQ data packet and the DCI indicating the asynchronous HARQ data packet may be the same, and therefore, if the DCI indicating the asynchronous HARQ data packet is increased,
  • the number of bits to indicate the HARQ process number of the data packet may add an equal number of bits in the DCI indicating the synchronous HARQ data packet.
  • the HARQ synchronization attribute of the data packet can be indicated by D AI in at least the following three ways.
  • the DAI field in the DCI can be used to indicate the HARQ synchronization attribute of the data packet.
  • the specific method of using the DAI to indicate the HARQ synchronization attribute of the data packet refer to the related description in the configuration, and details are not described herein.
  • Manner 2 A certain number of bits, that is, attribute indicator bits, may be added to the DCI to indicate the HARQ synchronization attribute of the data packet.
  • Mode 3 The status of the bit indicating the HARQ process number of the data packet can be indicated. Also, a bit indicating the HARQ process number of the data packet is referred to herein as an attribute process indication bit. For example, suppose that 2 bits are added to the DCI as the attribute process indication bit. When the status of the attribute process indication bit is "00", it indicates that the scheduled data packet adopts synchronous HARQ, and the attribute process indicates the remaining state of the bit ("01", "10", "11"), indicating that the scheduled packet uses asynchronous HARQ. The specific value of the remaining status of the attribute process indication bit indicates a different HARQ process number.
  • the attribute process indication bit indicates that the HARQ process ID of the data packet is 2 and when the attribute process indication bit is "11", it indicates that the HARQ process ID of the data packet is 3.
  • DCI and asynchronous HARQ packets indicating asynchronous HARQ packets need to be transmitted in a certain timing relationship.
  • the format of the radio frame that sends the packet is as As shown in FIG. 1, the DCI transmitted on the subframe 0 schedules the data packet on the subframe 4, the DCI transmitted on the subframe 1 schedules the data packet on the subframe 8, and the DCI scheduled on the subframe 5 is scheduled. Is the data packet on subframe 9, and the DCI transmitted on subframe 6 schedules the data packet on subframe 3 of the next radio frame.
  • asynchronous HARQ packets can be transmitted and ACK/NACK feedback of asynchronous HARQ packets can be performed according to a certain timing relationship.
  • the data packet on subframe 3 corresponds to ACK/NACK feedback on subframe 0 of the next radio frame
  • the data packet on subframe 4 corresponds to ACK/NACK feedback on subframe 1 of the next radio frame, subframe.
  • the data packet on 8 corresponds to ACK/NACK feedback on subframe 5 of the next radio frame
  • the data packet on subframe 9 corresponds to ACK/NACK feedback on subframe 6 of the next radio frame.
  • the base station configures the HARQ synchronization attribute including the synchronous HARQ and the asynchronous HARQ for the data packet, and configures the HARQ process ID of the data packet when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the uplink transmission may be performed by using the synchronous HARQ or the asynchronous HARQ in a flexible manner according to the current channel conditions and service requirements, thereby avoiding the problem that the flexible subframe cannot be dynamically configured due to the timing relationship, thereby making the flexible
  • the subframes are more flexibly configured as uplink and downlink subframes, which improves downlink throughput.
  • the embodiment of the present invention further provides a data transmission method, as shown in FIG. 3, including the following content.
  • the user equipment receives downlink control information that is sent by the base station and used to schedule a data packet. For example, before the user equipment receives the downlink control information of the data packet sent by the base station, the user equipment may receive the signaling notification message sent by the base station, where the signaling notification message includes flexible subframe configuration information, where the flexible subframe configuration information includes At least one of subframe number information and attribute information of the flexible subframe. The user equipment determines the information according to the flexible subframe configuration. The configuration of flexible sub-frames.
  • the user equipment may receive a signaling notification message sent by the base station, where the signaling content includes which channels and signals are configured on the flexible subframe, and the channel signal. Resource configuration.
  • the user equipment determines, according to the downlink control information, a HARQ synchronization attribute of the data packet.
  • the HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ.
  • the HARQ process ID of the data packet is determined according to the downlink control information.
  • the user equipment determines the HARQ synchronization attribute of the data packet according to the downlink control information, and determines the HARQ adaptive attribute of the data packet according to the downlink control information.
  • the above HARQ adaptive attributes include: adaptive HARQ, non-adaptive HARQ or semi-adaptive HARQ.
  • the HARQ synchronization attribute of a data packet can be determined in at least the following ways:
  • the HARQ synchronization attribute of the data packet is preset to be synchronous HARQ, and when the initial transmission packet of the data packet is sent on the flexible subframe as the uplink subframe, Presetting the HARQ synchronization attribute of the data packet to asynchronous HARQ;
  • the user equipment receives the signaling sent by the base station, where the signaling includes a HARQ synchronization attribute of the data packet, where the signaling includes radio resource control signaling or downlink control information.
  • the signaling is the downlink control signaling
  • the HARQ synchronization attribute of the data packet may be determined according to the downlink allocation indication field in the downlink control information.
  • the HARQ adaptive attribute of a data packet can be determined in at least several ways.
  • the HARQ adaptation attribute of the data packet may be configured to be adaptive HARQ or non-adaptive HARQ.
  • the HARQ adaptive attribute of the data packet is adaptive HARQ.
  • the user equipment learns that the HARQ adaptive attribute of the data packet is non-adaptive HARQ.
  • the HARQ adaptive attribute of the data packet may be configured to be adaptive HARQ or semi-adaptive HARQ.
  • the user equipment receives a DCI indicating the retransmission of the packet.
  • Two configurations are preferred. One configuration is specifically that the initial packet of the data packet is indicated by an implicit HARQ process number, and the retransmission packet of the data packet adopts a semi-adaptive HARQ, and the other configuration is specifically an initial packet of the data packet.
  • the explicit HARQ process number indication is used, and the retransmission packet of the data packet adopts adaptive HARQ.
  • the method for configuring the HARQ process number of the initial packet and the retransmission packet of the data packet may be different.
  • the specific method refer to the operation of the base station side in the embodiment shown in FIG. 2.
  • the HARQ process ID of the data packet can be determined in at least the following ways:
  • the HARQ process number of the data packet is determined according to the correspondence relationship;
  • the HARQ process number of the data packet is determined according to the correspondence relationship;
  • determining that the HARQ adaptive attribute of the data packet is a semi-adaptive HARQ determining a HARQ process number of the data packet according to the idle bit of the downlink control information
  • the correspondence between the HARQ process ID of the initially transmitted data packet and the subframe number of the uplink subframe, and the correspondence between the HA RQ process number of the initially transmitted data packet and the subframe number of the flexible subframe Can be - the corresponding relationship.
  • the base station side is the signaling sending end, and the user equipment is the signaling receiving end, so the HARQ synchronization attribute determination of the data packet is determined, HARQ For the determination of the adaptive attribute and the confirmation of the HARQ process number, refer to the method description of the base station side in the embodiment shown in FIG. 2 above.
  • the user equipment receives the downlink control information corresponding to the data packet sent by the base station, and determines the HARQ synchronization attribute of the data packet according to the downlink control information, where the HARQ synchronization attribute of the data packet is configured to be asynchronous.
  • the HARQ process ID of the data packet is determined according to the downlink control information. Therefore, in the dynamic TDD application scenario, the problem that the time relationship cannot be dynamically configured can be flexibly adopted according to the current channel condition and the service requirement, so that the flexible subframe is more flexibly configured as the uplink and downlink subframe, and the downlink throughput is improved. .
  • the embodiment of the present invention further provides a base station.
  • the base station includes: an attribute configuration unit 301, a process configuration unit 302, and a control information sending unit 303.
  • the attribute configuration unit 301 configures a HARQ synchronization attribute of the data packet, where the HARQ synchronization attribute includes synchronous HARQ or asynchronous HARQ; and the process configuration unit 302 configures the data packet when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the HARQ process number; the control information transmitting unit 303 sends downlink control information for scheduling the data packet to the user equipment.
  • the foregoing base station specifically includes: a notification message sending unit, configured to send to the user
  • the device sends flexible subframe configuration information;
  • the flexible subframe configuration information includes at least one of subframe number information and attribute information of the flexible subframe of the flexible subframe.
  • the attribute configuration unit 301 is specifically configured to: when the initial packet of the data packet is sent on the fixed uplink subframe, preset the HARQ synchronization attribute of the data packet to be the same as the HARQ synchronization attribute of the preset data packet. For asynchronous HARQ; or, the HARQ synchronization attribute of the data packet is preset to be asynchronous HARQ.
  • the foregoing attribute configuration unit 301 includes: an information sending subunit, configured to send signaling to the user equipment, where the signaling includes a HARQ synchronization attribute of the data packet, where the signaling includes radio resource control signaling or downlink control information. .
  • the attribute configuration unit is further configured to configure a HARQ adaptive attribute of the data packet, where the HARQ adaptive attribute includes: an adaptive HARQ, a non-adaptive HARQ, or a semi-adaptive HARQ; further, the foregoing attribute configuration unit 301 Specifically, when the HARQ synchronization attribute of the configuration data packet is synchronous HARQ, the HARQ adaptive attribute of the data packet is configured as adaptive HARQ or non-adaptive HARQ; when the HARQ synchronization attribute of the configuration data packet is asynchronous HARQ, the configuration is performed.
  • the HARQ adaptive attribute of the data packet is adaptive HARQ or semi-adaptive HARQ.
  • the process configuration unit 302 further includes: a process number configuration sub-unit, configured to preset an increased number of HARQ processes corresponding to different uplink-downlink subframe ratios; or, determining an increased HARQ according to the number of flexible subframes.
  • the number of processes; or, the higher-level signaling is used to notify the user equipment of the number of HARQ processes added.
  • the process configuration unit 302 further includes: a process number configuration subunit, a correspondence relationship, for example, a corresponding relationship; or, presetting the initial packet of the data packet, or indicating the data packet by using downlink control information The HARQ process number of the initial packet.
  • the attribute configuration unit 301 is specifically configured to: when the HARQ process ID of the initial packet of the data packet is preset, and the HARQ process ID of the uplink packet or the initial packet of the preset data packet and the flexible subframe When the correspondence between the frame numbers is configured, the retransmission packet of the data packet is configured to be semi-adaptive HARQ; or, when the HARQ process ID of the initial packet of the data packet is indicated by the downlink control information, the retransmission packet of the data packet is configured. For adaptive HARQ.
  • control information sending unit 303 is specifically configured to send downlink control information of the scheduling data packet to the user equipment, where a bit in the downlink allocation indication field of the downlink control information is used to indicate a HARQ synchronization attribute of the data packet; or And a state of the downlink allocation indication field of the downlink control information is used to indicate that the scheduled data packet adopts synchronous HARQ, and another state is used to indicate that the scheduled data packet adopts asynchronous HARQ; or the downlink allocation indication of the downlink control information is used.
  • N (N is an integer greater than 0 and less than 4) in the domain is used to indicate that the scheduled data packet uses synchronous HARQ, and the remaining (4-N) states are used to indicate that the scheduled data packet adopts asynchronous HARQ; or,
  • the downlink allocation indication of the downlink control information indicates that N (N is an integer greater than 0 and less than 4) in the domain is used to indicate that the scheduled data packet adopts synchronous HARQ, and the remaining (4-N) states are used to indicate the scheduled data packet.
  • the different states in the remaining (4-N) states indicate the sub-segment of the scheduled asynchronous HARQ packet. Frame number.
  • the base station configureds a HARQ synchronization attribute including a synchronous HARQ and an asynchronous HARQ for the data packet, and configures a HARQ process ID of the data packet to the user equipment when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the uplink transmission may be performed by using the synchronous HARQ or the asynchronous HARQ in a flexible manner according to the current channel condition and the service requirement, thereby avoiding the problem that the flexible subframe cannot be dynamically configured due to the timing relationship, thereby making the flexible
  • the subframes are more flexibly configured as uplink and downlink subframes, which improves downlink throughput.
  • the embodiment of the present invention further provides a user equipment, which can To implement the method embodiment shown in FIG.
  • the user equipment includes: a control information receiving unit 401, an attribute determining unit 402, and a process determining unit 403.
  • the control information receiving unit 401 receives the downlink control information for scheduling the data packet sent by the base station; the attribute determining unit 402 determines the HARQ synchronization attribute of the data packet according to the downlink control information, where the HARQ synchronization attribute includes synchronous HARQ or asynchronous.
  • the HARQ; the process determining unit 403 determines the HARQ process ID of the data packet according to the downlink control information when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ.
  • the foregoing user equipment further includes: a notification message receiving unit and a subframe configuration determining unit.
  • the notification message receiving unit receives the flexible subframe configuration information sent by the base station; the flexible subframe configuration information includes at least one of subframe number information of the flexible subframe and attribute information of the flexible subframe;
  • the determining unit determines the configuration of the flexible subframe according to the flexible subframe configuration information.
  • the attribute determining unit 402 is specifically configured to: when the initial packet of the data packet is sent on the fixed uplink subframe, preset the HARQ synchronization attribute of the data packet to be the same as the HARQ synchronization attribute of the data packet preset. For the asynchronous HARQ; or, the HARQ synchronization attribute of the preset data packet is asynchronous HARQ; or, according to the downlink allocation indication field in the downlink control information, the HARQ synchronization attribute of the data packet is determined.
  • the user equipment further includes: a signaling receiving unit, configured to receive radio resource control signaling sent by the base station, where the radio resource control signaling includes a HARQ synchronization attribute of the data packet; the foregoing attribute determining unit 402, specifically And configured to determine a HARQ synchronization attribute of the data packet according to the downlink control information and the foregoing radio resource control signaling.
  • a signaling receiving unit configured to receive radio resource control signaling sent by the base station, where the radio resource control signaling includes a HARQ synchronization attribute of the data packet
  • the foregoing attribute determining unit 402 specifically And configured to determine a HARQ synchronization attribute of the data packet according to the downlink control information and the foregoing radio resource control signaling.
  • the foregoing attribute determining unit is further configured to determine, according to the downlink control information, a HARQ adaptive attribute of the data packet, where the HARQ adaptive attribute includes: an adaptive HARQ, a non-adaptive HARQ, or a semi-adaptive HARQ.
  • the process determining unit 403 is specifically configured to: after receiving the downlink control information, determine a HARQ process ID of the data packet according to the corresponding relationship, for example, a corresponding relationship; or, when the data packet is preset When the correspondence between the HARQ process number of the initial transmission packet and the subframe number of the flexible subframe, for example, the corresponding relationship, the HARQ process ID of the data packet is determined according to the correspondence relationship; or, the retransmission packet of the data packet is determined.
  • the HARQ adaptive attribute is semi-adaptive HARQ
  • the HARQ process number of the data packet is determined according to the idle bits of the downlink control information.
  • the user equipment receives the downlink control information corresponding to the data packet sent by the base station, and determines the HARQ synchronization attribute of the data packet according to the downlink control information, and configures the HARQ synchronization attribute of the data packet to be asynchronous HARQ. And determining, according to the downlink control information, a HARQ process ID of the data packet.
  • the uplink transmission may be performed by using the synchronous HARQ or the asynchronous HARQ in a flexible manner according to the current channel conditions and service requirements, thereby avoiding the problem that the flexible subframe cannot be dynamically configured due to the timing relationship, thereby making the flexible
  • the subframes are more flexibly configured as uplink and downlink subframes, which improves downlink throughput.
  • the embodiment of the present invention further provides a data transmission system, as shown in FIG. 6, comprising: a base station 501 and a user equipment 502.
  • the base station 501 configures a HARQ synchronization attribute of the data packet, where the HARQ synchronization attribute includes a synchronous HARQ or an asynchronous HARQ; and when the HARQ synchronization attribute of the data packet is configured as an asynchronous HARQ, configuring a HARQ process ID of the data packet;
  • the device 502 sends downlink control information for scheduling the data packet.
  • the user equipment 502 receives the downlink control information sent by the base station 501 for scheduling the data packet, determines the HARQ synchronization attribute of the data packet according to the downlink control information, and configures the HARQ synchronization attribute of the data packet to be asynchronous HARQ.
  • the data transmission system configures, by the base station, a HARQ synchronization attribute including synchronous HARQ and asynchronous HARQ for the data packet, and configures the HARQ process ID of the data packet when the HARQ synchronization attribute of the data packet is configured as asynchronous HARQ. Sending downlink control information for scheduling the data packet to the user equipment.
  • the uplink transmission may be performed by using the synchronous HARQ or the asynchronous HARQ in a flexible manner according to the current channel conditions and service requirements, thereby avoiding the problem that the flexible subframe cannot be dynamically configured due to the timing relationship, thereby making the flexible
  • the subframes are more flexibly configured as uplink and downlink subframes, which improves downlink throughput.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Description

数据传输方法、 装置及系统 本申请要求于 201 1年 4月 1日提交中国专利局、申请号为 2011 10082286.9、 发明名称为"数据传输方法、 装置及系统"的中国专利申请的优先权, 其全部内 容通过引用结合在本申请中。
技术领域
本发明涉及通信领域, 尤其涉及一种数据传输方法、 装置及系统。 背景技术
LTE ( Long Term Evolution, 长期演进 ) 系统支持时分双工 ( Time Division Duplexing, TDD ) 方式, 在该方式下上行链路 ( UL, Uplink ) 和下行链路 ( DL , Downlink )使用同一频率载波的不同时隙。 LTE TDD 系 统可以根据不 同 的业务类型 , 半静态调整上下行配比 ( Uplink-Downlink Configuration ) , 以满足上下行非对称的业务需求。
在现有的 LTE技术中, 使用哪种上下行配比是半静态配置的, 会 出现配置的上下行配比与瞬时业务类型不匹配, 从而不能有效利用资 源。 为了使实际使用的上下行配比与瞬时业务类型更加匹配, 更有效地 利用通信资源, 可以使用动态 TDD子帧应用技术, 即在无线帧内配置 一些灵活子帧 (flexible sub frame ) , 该灵活子帧可以动态配置成上行 子帧或下行子帧。 图 1为一个无线帧内动态 TDD子帧应用的一种示意 图, 其表示每个无线帧的 3 , 4 , 8和 9号子帧为灵活子帧。
在实现本发明的过程中, 发明人发现动态 TDD子帧应用场景下, 动重传请求)的方式进行,因此,用于调度 PUSCH( Physical Uplink Share Channel , 物理上行共享信道) 的 PDCCH ( Physical Down Control Channel , 物理下行控制信道) 的发送、 PUSCH 的发送、 上行 ACK ( Acknowledgement, 正确应答) /NACK ( Non-Acknowledgement , 错 误应答) 的反馈以及 PUSCH的重传均是按照一定的时序关系进行的, 即上下行传输存在定时关系, 上行传输也存在定时关系。 这样, 当某一 灵活子帧在当前时刻被配置为上行子帧并进行了上行传输,例如进行了 PUSCH 的发送时, 由于这种定时关系的存在, 该灵活子帧需要在之后 的规定时隙进行对应的上行传输, 例如进行对应的上行 ACK/NACK的 反馈等, 由此, 会导致该灵活子帧在一定时间内无法配置成下行子帧, 削弱了配置灵活子帧的增益, 进而降低下行吞吐量。
发明内容
本发明的实施例提供一种数据传输方法、装置及系统,在动态 TDD 应用场景下, 能够使灵活子帧更加灵活地配置, 提高下行吞吐量。
本发明一方面提供一种数据传输方法, 包括: 配置数据包的 HARQ 同步属性, 上述 HARQ同步属性包括同步 HARQ或异步 HARQ, 当该 数据包的 HARQ同步属性配置为异步 HARQ时,配置该数据包的 HARQ 进程号; 向用户设备发送调度该数据包的下行控制信息。
本发明一方面还提供一种基站, 包括: 属性配置单元, 用于配置数 据包的 HARQ同步属性,上述 HARQ同步属性包括同步 HARQ或异步 HARQ; 进程配置单元, 用于当该数据包的 HARQ同步属性配置为异步 HARQ时, 配置该数据包的 HARQ进程号; 和控制信息发送单元, 用 于向用户设备发送调度该数据包的下行控制信息。
本发明另一方面提供一种数据传输方法, 包括: 接收基站发送的用 于调度数据包的下行控制信息; 根据该下行控制信息, 确定上述数据包 的 HARQ 同步属性, 上述 HARQ 同步属性包括同步 HARQ 或异步 HARQ; 当上述数据包的 HARQ同步属性配置为异步 HARQ时, 根据 上述下行控制信息确定所述数据包的 HARQ进程号。 本发明另一方面还提供一种用户设备, 包括: 控制信息接收单元, 用于接收基站发送的用于调度数据包的下行控制信息; 属性确定单元, 用于根据上述下行控制信息, 确定上述数据包的 HARQ 同步属性, 上 述 HARQ同步属性包括同步 HARQ或异步 HARQ; 和进程确定单元, 用于当该数据包的 HARQ同步属性配置为异步 HARQ时, 根据上述下 行控制信息确定上述数据包的 HARQ进程号。
本发明再一方面提供一种数据传输系统, 包括: 如上所述的基站和 用户设备。
本发明实施例提供的数据传输方法、 装置及系统, 通过基站为数据 包配置包括同步 HARQ和异步 HARQ的 HARQ同步属性, 并且, 当该 数据包的 HARQ同步属性配置为异步 HARQ时, 配置数据包的 HARQ 进程号, 向用户设备发送调度上述数据包的下行控制信息。 因此, 在动 态 TDD应用场景下, 可以根据当前的信道状况、 业务需求等灵活地采 定时关系无法动态配置的问题,从而使灵活子帧更加灵活地配置成上下 行子帧, 提高了下行吞吐量。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述 中所需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图 仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出 创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为一个无线帧内动态 TDD子帧应用的一种示意图;
图 2为本发明实施例提供的一种数据传输方法的流程示意图; 图 3为本发明实施例提供的另一种数据传输方法的流程示意图; 图 4为本发明实施例提供的一种基站的构成示意图; 图 5为本发明实施例提供的一种用户设备的构成示意图;
图 6为本发明实施例提供的一种数据传输系统的构成示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案 进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实 施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术 人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本 发明保护的范围。
为了使本发明实施例更加清楚明白, 如下先对 LTE TDD系统中涉及 的概念作简单说明。
在 LTE TDD系统中共包括 7种上下行配比,如表 1所示,其中, 'D, 表示下行子帧, 'U,表示上行子帧; 'S,表示特殊子帧, 主要用于下行传 输。 从表 1可看出, 在各种上下行配比的情况下, 预留给下行业务的时 域资源占 40 %到 90 %。 表 1
Figure imgf000006_0001
本发明实施例中所说的数据包, 优选地, 指的是上行共享信道
( UL-SCH, Uplink Shared Channel )上承载的传输包( Transport Block ), 该数据包可以是动态调度的, 也可以是半持续调度的。 上述 UL-SCH 属于传输信道 (Transport Channel ) 的一种, 是一种从物理层提供到 MAC ( Medium Access Control, 多媒体接入控制 )层的信息传输业务。 初次传输的数据包简称为初传包, 当接收到的初传包检测错误时, 需 要重传该数据包, 重新传输的数据包简称为重传包。 一个数据包配置 一个 HARQ进程号 ,即同一数据包对应的初传包和重传包的 HARQ进 程号相同。
本发明实施例中所说的固定子帧指的是在每种 TDD 上下行配比 的有效时间内, 不能动态改变上下行属性的子帧, 例如图一中的 0, 1 , 2, 5 , 6和 7子帧。 固定子帧包括固定上行子帧和固定下行子帧, 其 中, 固定上行子帧指固定子帧中用作上行传输的子帧, 固定下行子帧 指固定子帧中用作下行传输的子帧。 本发明中所说的灵活子帧指的是 在每种 TDD上下比配比的有效时间内, 可以被动态地或半静态地配置 成上行子帧或下行子帧的子帧。 或者, 系统通过广播信令通知现有版本 (例如 LTE Rel-8/9/lO ) 用户设备当前的 7种上下行子帧配比, 对于演 进系统 (例如 LTE Rel-11/12等) 的用户设备, 系统可以半静态地或动 态地通知不同的上下行子帧配比 (可以为现有的 7种配比, 也可以新增 加上下行子帧配比) , 例如, 当现有系统和演进系统都按照 7种配置通 知时, 对于子帧 3 , 4, 5 , 6, 7, 8和 9, 现有系统和演进系统可能配置 不同的子帧属性 (即子帧配置为上行子帧还是下行子帧) , 因此可以看 作是灵活子帧, 当现有系统和演进系统都按照 0, 1和 2三种上下行子 帧配置时, 子帧 3 , 4, 8和 9可以看作是灵活子帧。 因此, 本发明中的 灵活子帧配置可以简单地通过通知演进系统中的用户设备的上下行子 帧配比实现。
为了能够使灵活子帧更加灵活地配置, 提高下行吞吐量, 本发明 实施例提供了一种数据传输方法, 包括: 配置数据包的混合自动重传 请求 HARQ同步属性, 上述 HARQ同步属性包括同步 HARQ或异步 HARQ, 当该数据包的 HARQ同步属性配置为异步 HARQ时, 配置该 数据包的 HARQ进程号; 向用户设备发送调度该数据包的下行控制信 息。
具体地, 如图 2所示, 本实施例提供的数据传输方法包括以下内 容。
101 , 基站配置数据包的 HARQ同步属性, 上述 HARQ同步属性 包括同步 HARQ或异步 HARQ。
可选地, 在基站配置数据包的 HARQ同步属性之前, 基站还可以 向用户设备发送信令通知消息, 该信令通知消息包含灵活子帧配置信 息; 该灵活子帧配置信息包括灵活子帧的子帧号信息和属性信息中的 至少一种信息。
举例而言, 基站在向用户设备进行数据传输之前, 需要确定动态 TDD子帧配置, 即, 需要确定无线帧中哪些子帧是灵活子帧, 确定每 个灵活子帧的属性。
可选地, 基站可以通过至少以下两种方法确定无线帧中哪些子帧 是灵活子帧。
方法一: 可以通过预先定义的方式配置灵活子帧的子帧号, 即预 先设定无线帧中灵活子帧的子帧号, 在基站和用户设备两侧预先配置 灵活子帧的子帧号的设定信息。
方法二: 基站可以根据当前信道环境和业务量等配置无线帧中灵 活子帧的子帧号。 基站在配置完成灵活子帧的子帧号时, 还需要向用 户设备发送信令通知消息, 将配置完成的灵活子帧的子帧号通知给用 户设备。 其中, 该信令通知消息可以通过下行控制信道承载, 或者, 也可以通过高层信令承载。 例如, 在具体实现过程中, 当采用高层信 令承载该信令通知消息时,可以提高灵活子帧的子帧号传输的可靠性。 基站确定每个灵活子帧的属性, 即确定该灵活子帧是作为上行子 帧使用, 还是作为下行子帧使用。 基站可以根据当前信道环境和业务 量等配置灵活子帧的属性。 在基站对灵活子帧的属性配置完成后, 基 站还需要向用户设备发送信令通知消息, 将配置完成的灵活子帧的属 性通知给用户设备。 其中, 该信令通知消息可以通过下行控制信道承 载。 此处的下行控制信道是指下行控制区域内的信道, 例如 PDCCH。 在 LTE系统中 , 上述下行控制区域位于每个子帧的前 1 ~ 4个 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用)符号, 主要发送层一和 /或层 2的物理层信令。 另外, 该信令通知消息也可以 是高层信令。
可选地, 基站在确定灵活子帧的属性后, 进一步可以确定灵活子帧 上需要配置哪些信道和信号。 当基站确定灵活子帧的信道和信号配置 后, 需要发送信令通知用户。 信令内容包括灵活子帧上配置了哪些信道 和信号, 以及信道信号的资源配置。
在本发明实施例中, 基站需要配置数据包的 HARQ同步属性。 其 中, HARQ同步属性是指采用同步 HARQ ( synchronous HARQ ) 或异 步 HARQ ( asynchronous HARQ )方式传输数据包。 当数据包的 HARQ 同步属性为同步 HARQ, 即采用同步 HARQ的方式传输数据包时, 该 数据包的重传包相对于初传包的时序关系是预先确定的。 当数据包的 HARQ同步属性为异步 HARQ,即采用异步 HARQ的方式传输数据时, 该数据包的重传包相对于初传包的时序关系是不固定的。 其中异步 HARQ也可称为非同步 HARQ。
可选地, 基站可以通过至少以下三种方法配置数据包的 HARQ同 步属性。 方法一: 通过预先定义的方式配置数据包的 HARQ同步属性。 例 如, 初次传输的数据包 (即初传包) 在固定上行子帧上发送时, 预先 设定该数据包的 HARQ同步属性为同步 HARQ, 初次传输的数据包的 (即初传包) 在作为上行子帧的灵活子帧上发送时, 预先设定该数据 包的 HARQ同步属性为异步 HARQ; 或者, 预先设定在上行子帧上传 输的数据包的 HARQ同步属性均为异步 HARQ。 在设定完成后, 在基 站和用户设备两侧配置数据包的 HARQ同步属性的设定信息。
方法二: 通过高层信令配置数据包的 HARQ同步属性, 即基站根 据信道环境和业务需求等配置数据包的 HARQ同步属性, 向用户设备 发送信令消息, 该信令消息包含该数据包的 HARQ同步属性。 例如, 基站设定在作为上行子帧的灵活子帧上初次传输的数据包的 H A R Q同 步属性为异步 HARQ, 基站向用户设备发送信令消息, 通知用户设备 该设定信息;或者,基站设定当前在上行子帧上传输的数据包的 H A R Q 同步属性均为同步 HARQ或均为异步 HARQ, 基站向用户设备发送信 令消息, 通知用户设备该设定信息。 其中, 高层信令 ( High Layer Signaling ) 是相对物理层信令来说的, 来自更高层面 (layer ) 发送频 率更慢的信令, 包括: 无线资源控制 (RRC, Radio Resource Control ) 信令, 和媒体接入控制 (MAC, Media Access Control )信令和广播信 令等。 例如: 当上述高层信令采用 RRC信令时, 不仅具有较高的可靠 性, 还可以分别配置每个用户设备的数据包的 HARQ同步属性。
方法三: 通过下行控制信息( Downlink Control Information, DCI ) 配置数据包的 HARQ同步属性, 具体配置方法参见后文。
另外, 基站在配置数据包的 HARQ同步属性的同时, 配置数据包 的 HARQ 自适应属性。
其中, HARQ 自适应属性是指采用 自适应 HARQ ( adaptive HARQ )、半自适应 HARQ( semi-adaptive HARQ )或者非自适应 HARQ ( non-adaptive HARQ )的方式传输数据包的重传包的调度信息。其中, 当数据包的 HARQ 自适应属性为自适应 HARQ时,指示该数据包的重 传包的 MCS ( Modulation and Coding Scheme, 调制编码方式 )和频域 资源分配等调度信息可以根据信道条件重配置。 当数据包的 HARQ 自 适应属性为非自适应 HARQ时, 指示该数据包的重传包的 MCS和频 域资源分配等的调度信息与初次传输的数据包的调度信息保持一致, 或按照预定义的规则变化。 当数据包的 HARQ 自适应属性为半自适应 HARQ时, 将该数据包的重传包的调度信息分成两部分, 即第一调度 信息和第二调度信息。 其中, 指示该数据包的重传包的第二调度信息 根据信道条件重配置, 而指示该数据包的重传包的第一调度信息与指 示初次传输的数据包的第一调度信息一致, 或者, 指示该数据包的重 传包的第一调度信息按照预定义的规则变化。 可选地, 上述第一调度 信息包括: MCS , TPC ( Transmit Power Control, 传输功率控制) 和 解调参考信号 ( DMRS , Demodulation Reference Signal )循环移位( CS , Cyclic Shift ) 中的至少一种调度信息。 采用半自适应 HARQ时, 因为 第一调度信息无需比特指示, 可以从 DCI中节省出一些比特。 例如, 当第一调度信息为 MCS时, 5比特的 MCS和冗余版本( RV , Redundancy version )域可以仅用 2比特来通知 RV, 这样可以节省 3比特。 当第一 调度信息为 TPC时, 可以节省 2比特; 当第一调度信息为 DMRS CS 时, 可以节省 3比特。 需要说明的是 DMRS CS域在后续演进版本中, 也可以重定义为 DMRS循环移位和正交掩码 (OCC, orthogonal cover code ) 指示域, 因此, 当第一调度信息为 DMRS循环移位和 OCC指 示时, 可以节省 3比特。
举例而言, 当数据包的 HARQ同步属性配置成同步 HARQ时, 该 数据包的 HARQ 自适应属性可以被配置成自适应 HARQ或非自适应 HARQ。 此时, 基站可以根据需要配置该数据包的 HARQ 自适应属性 为自适应 HARQ或非自适应 HARQ。 例如, 当基站根据需要配置数据 包的 HARQ 自适应属性为自适应 HARQ时,基站会在预先设定的时刻 向用户设备发送指示数据包重传的 PDCCH,通知用户设备该数据包的 HARQ 自适应属性为自适应 HARQ。 当基站根据需要配置数据包的 HARQ 自适应属性为非自适应 HARQ时, 基站在预先设定的时刻不发 送指示数据包重传的 PDCCH, 使用户设备获知该数据包的 HARQ 自 适应属性为非自适应 HARQ。
当数据包的 HARQ 同步属性配置成异步 HARQ 时, 该数据包的 HARQ 自适应属性可以被配置成自适应 HARQ或半自适应 HARQ。 此 时, 基站可以根据需要配置该数据包的 HARQ 自适应属性为自适应 HARQ或半自适应 HARQ。 基站会向用户设备发送指示数据包重传的 DCI, 以使用户设备获知重传的数据包的 HARQ进程号。
102 , 当该数据包的 HARQ同步属性配置为异步 HARQ时, 基站 配置该数据包的 HARQ进程号。
基站在配置该数据包的 HARQ同步属性为异步 HARQ时,需要配 置该数据包的 HARQ进程号。 另外, 在动态 TDD子帧配置场景下, 由于灵活子帧可以被配置成上行子帧, 所以需要在配置数据包的 HARQ 进程号之前, 增加上行 HARQ 进程数 (Number of HARQ processes ) 。 具体地, 可以采用至少以下两种方式配置增加的 HARQ 进程数。
方式一: 通过预先定义的方式配置增加的 HARQ进程数。 可以预 先根据不同的上下行子帧配比设定对应的增加的 HARQ进程数。例如, 可以配置在上下行配比为 0时, 不增加 HARQ进程, 在上下行配比为 1时, 增加 2个 HARQ进程, 在上下行配比为 2时, 增加 4个 HARQ 进程。或者,也可以根据每个无线帧中的灵活子帧数配置增加的 HARQ 进程数, 例如, 若每个无线帧中存在 4个灵活子帧, 则配置增加 4个 HARQ进程。
方式二: 基站确定增加的 HARQ进程数, 通过信令通知用户设备 确定的增加的 HARQ进程数。 例如, 采用高层信令通知用户设备增加 的 HARQ进程数, 从而使该增加的 HARQ进程数的传输具有可靠性。
在增加的 HARQ进程数配置完成后,配置数据包的 HARQ进程号。 该数据包的初传包和重传包的 HARQ进程号的配置方法可以相同, 也 可以不同。 其中, 该数据包的初传包的 HARQ进程号可以通过至少以 下两种方法进行配置。
方法一
通过预先定义的方式配置数据包的初传包的 HARQ进程号。 举例 而言, 在所有上行子帧上初次传输的数据包的 HARQ同步属性均为异 步 HARQ时,预先设定数据包的初传包的 HARQ进程号与上行子帧的 子帧号的对应关系, 如——对应的关系。 例如, 假设采用图 1所示格 式的无线帧传输数据, 预先设定在子帧 2, 3 , 4, 7 , 8和 9上初传的 数据包的 HARQ进程号分别为 0, 1 , 2, 3 , 4和 5 , 这样, 当 DCI调 度的初传的数据包在灵活子帧 8上发送时, 该数据包的 HARQ进程号 为 4。
或者, 当作为上行子帧的灵活子帧上初次传输的数据包的 HARQ 同步属性为异步 HARQ , 在固定上行子帧上初次传输的数据包的 HARQ同步属性为同步 HARQ时, 预先设定数据包的初传包的 HARQ 进程号与灵活子帧的子帧号的对应关系, 如——对应的关系。 例如, 假设采用图 1所示格式的无线帧传输数据,预先设定在灵活子帧 3 , 4, 8和 9上初传的数据包的 HARQ进程号分别为 0, 1 , 2和 3 , 这样, 当 D C I调度的初传的数据包在灵活子帧 8上发送时,该数据包的 H A R Q 进程号为 2。
上述方法一不需要增加额外的 DCI比特数来指示数据包的初传包 的 HARQ进程号, 可以节省 DCI的开销。
方法二:
基站根据需要设定的 HARQ 进程数, 在发送给用户设备的 DCI 中增加一定个数的比特, 用于指示数据包的初传包的 HARQ进程号。 例如, 当所有上行子帧上初传的数据包的 HARQ 同步属性均为异步 HARQ时, 在发送给用户设备的 DCI中增加 3个比特, 用于指示该数 据包的初传包的 HARQ进程号。 或者, 当仅在作为上行子帧的灵活子 帧上初传的数据包的 HARQ同步属性为异步 HARQ时,在发送给用户 设备的 DCI中增加 2个比特,用于指示数据包的初传包的 HARQ进程 号。 应用该方法二指示数据包的初传包的 HARQ进程号, 从而使数据 包的初传包的发送更加灵活。
在本发明实施例中, 将通过预先定义的方式配置数据包的初传包 的 HARQ进程号的方法可以称为初传包的隐式 HARQ进程号指示方 法,将通过 DCI配置数据包的初传包的 HARQ进程号的方法可以称为 初传包的显式 HARQ进程号指示方法。
配置数据包的重传包的 HARQ进程号采用显示 HARQ进程号指示 方法。 其中, 指示 HARQ进程号的比特数可以根据异步 HARQ支持的 进程数确定, 例如, 当系统支持 4个异步 HARQ进程数时, 需要两个 DCI比特, 以指示数据包的重传包的 HARQ进程号。 当该数据包的重 传包的 HARQ 自适应属性为自适应 HARQ 时, 在发送给用户设备的 DCI中增加一定个数的比特, 用于指示该数据包的重传包的 HARQ进 程号。 另外, 当该数据包的重传包的 HARQ 自适应属性为半自适应 HARQ时, 可以不增加 DCI的比特数指示该数据包的重传包的 HARQ 进程号, 而用 DCI中的空闲比特, 即采用第一调度信息域的 DCI比特 指示该数据包的重传包的 HARQ进程号(对于半自适应 HARQ, 指示 该数据包的重传包的 DCI中的第一调度信息无需通知, 因此存在空闲 比特) 。
103 , 基站向用户设备发送调度该数据包的下行控制信息。
基站可以根据上述数据包的 HARQ 同步属性和 HARQ 自适应属 性, 或者, 根据上述数据包的 HARQ同步属性, HARQ 自适应属性以 及 HARQ进程号, 向用户设备发送调度该数据包的下行控制信息。 在 具体实现过程中, 用户设备在接收或发送业务数据之前, 可以通过 PDCCH接收基站配置给该用户设备的 DCI, 获知数据包的调度信息。 在本实施例中, 该 DCI除了用于指示数据包的调度信息外, 还可以用 于指示数据包的 HARQ进程号。 另外, 当系统同时支持同步 HARQ和 异步 HARQ时,需要区分当前 DCI指示的数据包采用的是同步 HARQ 还是异步 HARQ, 因此, DCI还可以指示数据包的 HARQ同步属性。
下面详细介绍两种异步 HARQ的数据包配置。 其中一种配置具体 为数据包的初传包采用隐式 H A R Q进程号指示, 该数据包的重传包采 用半自适应 HARQ (以下简称配置一) , 另一种配置具体为数据包的 初传包采用显式 HARQ 进程号指示, 该数据包的重传包采用自适应 HARQ (以下简称配置二) 。 下面针对以上两种配置对用户设备发送 DCI进行详细说明。
配置一
配置一中, 数据包的初传包采用隐式 HARQ进程号指示, 即预先 号的对应关系, 因此, 可以通过承载数据包的初传包的上行子帧的子 帧号确定数据包的 HARQ 进程号。 数据包的重传包采用半自适应 HARQ, 因此, 可以使用指示重传数据包的 DCI中的空闲比特指示数 据包的 HARQ进程号。 由此可知, 在配置一中, 指示初传数据包和重 传数据包的 DCI都可以不额外增加 DCI的比特数来指示进程号。
在配置一场景下, 可以使用 DCI 中的下行分配指示 ( DAI , Downlink Assignment Index )域指示数据包的 HARQ同步属性, 此时, 不需要额外增加 DCI的比特数来指示数据包的 HARQ同步属性。或者, 也可以在 DCI中增加一定数量的比特, 即属性指示比特, 用来指示数 据包的 HARQ同步属性。
在使用 DCI的 DAI域指示数据包的 HARQ同步属性时, DAI域 有 2 个比特, 可以通过至少以下四种方法利用 DAI 指示数据包的 HARQ同步属性。
方法一: DAI域中的一个比特用于指示数据包的 HARQ同步属性。 例如, 在指示数据包的 HARQ 同步属性的比特为" 0"时, 表示调度的 数据包采用同步 HARQ,在指示数据包的 HARQ同步属性的比特为 "1" 时, 表示调度的数据包采用异步 HARQ。
方法二: DAI域中的一个比特用于指示是否调度了同步 HARQ数 据包, DAI域中的另一个比特用于指示是否调度了异步 HARQ数据包。 例如, DAI域中的最高有效位(MSB , Most Significant Bit)用于指示同 步 HARQ数据包的调度, DAI域中的最低有效位(LSB , Least Significant Bit)用于指示异步 HARQ数据包的调度。 这样, 当 MSB值为 "1"时, 表示调度了同步 HARQ的数据包,否则表示没有调度同步 HARQ的数 据包。 当 LSB值为 "1"时, 表示调度了异步 HARQ的数据包, 否则表 示没有调度异步 HARQ的数据包。 并且, 当 MSB和 LSB的值都为 "1" 时, 表示调度了同步 HARQ和异步 HARQ两种数据包。 采用方法二, 一个 DCI可以同时调度同步 HARQ和异步 HARQ两种数据包, 节省 了 DCI开销。 需要说明的是, 同时调度的同步 HARQ和异步 HARQ 两种数据包不在同一子帧上进行发送。
方法三: DAI域的比特的一种状态用于指示调度的数据包采用同 步 HARQ, DAI域的比特的另一种状态用于指示调度的数据包采用异 步 HARQ。 例如, 当 DAI域的比特为" 00"时, 表示调度的数据包采用 同步 HARQ, 当 DAI域的比特为 "1 1"时, 表示调度的数据包采用异步 HARQ。
方法四: DAI域中的 N ( N为大于 0且小于 4的整数) 种状态用 于指示调度的数据包采用同步 HARQ , 其余(4-N )种状态用于指示调 度的数据包采用异步 HARQ。 并且, 可以使用这其余(4-N )种状态中 的不同状态指示调度了几个异步 HARQ数据包, 例如, N=l , DAI域 的状态为" 00"时, 表示调度的数据包采用同步 HARQ, DAI域的其余 ( 4-N )种状态("01", "10", "11" )指示调度的数据包采用异步 HARQ。 其中, DAI域的状态为 "01"时, 表示调度了 1个异步 HARQ数据包, DAI域的状态为" 10" 时, 表示调度了 2个异步 HARQ数据包, DAI 域的状态为 "1 1" 时, 表示调度了 3 个异步 HARQ数据包。 或者, 可 以使用这其余(4-N )种状态中的不同状态指示调度了哪些子帧上的异 步 HARQ数据包, 例如, N= 1 , DAI域的状态为 "00"时, 表示调度的 数据包采用同步 HARQ, DAI域的其余 (4-N ) 种状态 ("01", "10", "11" )指示调度的数据包采用异步 HARQ。 其中, DAI域的状态为" 01" 时,表示调度了 n+k子帧上的异步 HARQ数据包, D AI域的状态为" 10" 时, 表示调度了 n+k+m子帧上的异步 HARQ数据包, DAI域的状态 为 "1 1"时, 表示调度了 n+k和 n+k+m子帧上的异步 HARQ数据包。 n 表示在下行子帧 n上发送了 DCI, k和 m为预定义的子帧偏移值。
配置二
在配置二中, 数据包的初传包采用显式 HARQ进程号指示, 数据 包的重传包采用自适应 HARQ, 因此, 指示初传数据包和重传数据包 的 DCI都需要增加 DCI比特数来指示 HARQ进程号。 在具体实现过 程中, 为了不增加 PDCCH的盲检测次数, 指示同步 HARQ数据包的 DCI和指示异步 HARQ数据包的 DCI的比特数可以相同, 因此, 若在 指示异步 HARQ数据包的 DCI中增加一定数量的比特来指示数据包的 HARQ进程号,则可以在指示同步 HARQ数据包的 DCI中增加同等数 量的比特。
可以通过至少以下三种方式利用 D AI指示数据包的 HARQ同步属 性。
方式一: 可以使用 DCI中的 DAI域指示数据包的 HARQ同步属 性,利用 DAI指示数据包的 HARQ同步属性的具体方法可以参见配置 一中的相关描述, 在此不再贅述。
方式二: 可以在 DCI中增加一定数量的比特, 即属性指示比特, 用来指示数据包的 HARQ同步属性。
方式三: 可以利用指示数据包的 HARQ进程号的比特的状态来指 示。 并且, 在此将指示数据包的 HARQ进程号的比特称为属性进程指 示比特。 例如, 假设在 DCI中增加 2比特作为属性进程指示比特, 在 属性进程指示比特的状态为 "00"时, 表示调度的数据包采用同步 HARQ, 而属性进程指示比特的其余状态 ( "01", "10", "11" ) , 表示 调度的数据包采用异步 HARQ。 而该属性进程指示比特的其余状态的 具体值表示不同的 HARQ进程号,例如,属性进程指示比特为 "01"时, 表示数据包的 HARQ进程号为 1 , 属性进程指示比特为 "10"时, 表示 数据包的 HARQ进程号为 2, 属性进程指示比特为 "11"时, 表示数据 包的 HARQ进程号为 3。
另外, 指示异步 HARQ数据包的 DCI和异步 HARQ数据包需要 按照一定的时序关系进行发送。 例如, 发送数据包的无线帧的格式如 图 1所示, 子帧 0上发送的 DCI调度的是子帧 4上的数据包, 子帧 1 上发送的 DCI调度的是子帧 8上的数据包,子帧 5上发送的 DCI调度 的是子帧 9上的数据包, 子帧 6上发送的 DCI调度的是下一个无线帧 的子帧 3上的数据包。
另外, 还可以按照一定的时序关系进行异步 HARQ数据包的发送 和异步 HARQ数据包的 ACK/NACK反馈。 例如, 子帧 3上的数据包 对应下一个无线帧的子帧 0上的 ACK/NACK反馈, 子帧 4上的数据 包对应下一个无线帧的子帧 1上的 ACK/NACK反馈, 子帧 8上的数 据包对应下一个无线帧的子帧 5上的 ACK/NACK反馈, 子帧 9上的 数据包对应下一个无线帧的子帧 6上的 ACK/NACK反馈。
以上时序关系可由系统设定, 并不限于上述所列举的时序关系。 本实施例提供的数据传输方法, 通过基站为数据包配置包括同步 HARQ和异步 HARQ的 HARQ同步属性, 并且, 当该数据包的 HARQ 同步属性配置为异步 HARQ时, 配置该数据包的 HARQ进程号, 向用 户设备发送该数据包对应的下行控制信息。 因此, 在动态 TDD应用场 景下, 可以根据当前的信道状况、 业务需求等灵活地采用同步 HARQ 或异步 HARQ的方式进行上行传输, 避免了灵活子帧因定时关系无法 动态配置的问题, 从而使灵活子帧更加灵活地配置成上下行子帧, 提 高了下行吞吐量。
与上述方法相对应地,本发明实施例还提供了一种数据传输方法, 如图 3所示, 包括以下内容。
201 , 用户设备接收基站发送的用于调度数据包的下行控制信息。 举例而言, 在用户设备接收基站发送的数据包的下行控制信息之 前, 用户设备可以接收基站发送的信令通知消息, 该信令通知消息包 含灵活子帧配置信息; 该灵活子帧配置信息包括灵活子帧的子帧号信 息和属性信息中的至少一种信息。 用户设备根据灵活子帧配置信息确 定灵活子帧的配置。
举例而言, 在用户设备接收基站发送的数据包的下行控制信息之 前, 用户设备可以接收基站发送的信令通知消息, 该信令内容包括灵 活子帧上配置了哪些信道和信号, 以及信道信号的资源配置。
202, 用户设备根据上述下行控制信息, 确定上述数据包的 HARQ 同步属性。其中,上述 HARQ同步属性包括同步 HARQ或异步 HARQ; 当该数据包的 HARQ同步属性配置为异步 HARQ时,根据上述下行控 制信息确定该数据包的 HARQ进程号。
在本实施例中, 用户设备根据上述下行控制信息, 确定上述数据 包的 HARQ同步属性的同时, 还可以根据上述下行控制信息, 确定上 述数据包的 HARQ 自适应属性。 上述 HARQ 自适应属性包括: 自适应 HARQ, 非自适应 HARQ或半自适应 HARQ。
举例而言, 可以通过至少以下几种方式确定数据包的 HARQ同步 属性:
当数据包的初传包在固定上行子帧上发送时, 预先设定该数据包 的 HARQ同步属性为同步 HARQ, 当数据包的初传包在作为上行子帧 的灵活子帧上发送时, 预先设定该数据包的 HARQ 同步属性为异步 HARQ;
或者, 根据预先设定信息确定在上行子帧上传输的数据包的 HARQ同步属性均为异步 HARQ;
或者,用户设备接收基站发送的信令,该信令包含数据包的 HARQ 同步属性; 其中,上述信令包括无线资源控制信令或者下行控制信息。 当上述信令为下行控制信令时, 可以根据该下行控制信息中的下行分 配指示域, 确定该数据包的 HARQ同步属性。
举例而言, 可以通过至少以下几种方式确定数据包的 HARQ 自适 应属性。 当数据包的 HARQ 同步属性配置成同步 HARQ 时, 该数据包的 HARQ 自适应属性可以被配置成自适应 HARQ或非自适应 HARQ。 例 如, 当用户设备在对应时刻收到指示数据包重传的 PDCCH 时, 该数 据包的 HARQ 自适应属性为自适应 HARQ。 当用户设备在对应时刻没 有收到指示数据包重传的 PDCCH, 用户设备获知该数据包的 HARQ 自适应属性为非自适应 HARQ。
当数据包的 HARQ 同步属性配置成异步 HARQ 时, 该数据包的 HARQ 自适应属性可以被配置成自适应 HARQ或半自适应 HARQ。 此 时, 用户设备会收到指示数据包重传的 DCI。 优选两种配置, 其中一 种配置具体为数据包的初传包采用隐式 HARQ进程号指示, 该数据包 的重传包采用半自适应 HARQ, 另一种配置具体为数据包的初传包采 用显式 HARQ进程号指示, 该数据包的重传包采用自适应 HARQ。
另外, 该数据包的初传包和重传包的 HARQ进程号的配置方法可 以不同, 具体方法可以参见图 2所示的实施例中基站侧的操作。 举例 而言, 可以通过至少以下几种方式确定数据包的 HARQ进程号:
在接收到下行控制信息后, 当预先设定初传的数据包的 HARQ进 程号与上行子帧的子帧号的对应关系时, 根据该对应关系确定该数据 包的 HARQ进程号;
或者, 在接收到下行控制信息后, 当预先设定初传的数据包的 HARQ进程号与灵活子帧的子帧号的对应关系时, 根据该对应关系确 定该数据包的 HARQ进程号;
或者, 在接收到下行控制信息后, 在确定数据包的 HARQ 自适应 属性为半自适应 HARQ时, 根据该下行控制信息的空闲比特确定该数 据包的 HARQ进程号;
或者, 在接收到下行控制信息后, 在确定数据包的 HARQ 自适应 属性为自适应 HARQ时,增加 DCI比特数用于指示该数据包的 HARQ 进程号。
在具体实现过程中, 上述初传的数据包的 HARQ进程号与上行子 帧的子帧号的对应关系和初传的数据包的 H A RQ进程号与灵活子帧的 子帧号的对应关系, 可以是——对应的关系。
需要说明的是, 因为用户设备侧的方法流程与基站侧的方法流程相 关, 基站侧是信令发送端, 而用户设备则是信令接收端, 因此有关数据 包的 HARQ同步属性的确定, HARQ 自适应属性的确定以及 HARQ进 程号的确认等机制可以参见前述图 2 所示的实施例中基站侧的方法介 绍。
本实施例提供的数据传输方法, 通过用户设备接收基站发送的数 据包对应的下行控制信息, 并根据该下行控制信息确定该数据包的 HARQ同步属性,当该数据包的 HARQ同步属性配置为异步 HARQ时, 根据该下行控制信息确定该数据包的 HARQ 进程号。 因此, 在动态 TDD应用场景下, 可以根据当前的信道状况、 业务需求等灵活地采用 时关系无法动态配置的问题, 从而使灵活子帧更加灵活地配置成上下 行子帧, 提高了下行吞吐量。
与上述方法相对应地, 本发明实施例还提供了一种基站, 该基站 如图 4所示, 包括: 属性配置单元 301、 进程配置单元 302和控制信 息发送单元 303。
其中, 上述属性配置单元 301配置数据包的 HARQ同步属性, 上 述 HARQ同步属性包括同步 HARQ或异步 HARQ;上述进程配置单元 302在上述数据包的 HARQ同步属性配置为异步 HARQ时, 配置上述 数据包的 HARQ进程号; 上述控制信息发送单元 303向用户设备发送 调度上述数据包的下行控制信息。
可选地, 上述基站具体还包括: 通知消息发送单元, 用于向用户 设备发送灵活子帧配置信息; 该灵活子帧配置信息包括灵活子帧的灵 活子帧的子帧号信息和属性信息中的至少一种信息。
进一步地, 上述属性配置单元 301 , 具体用于当数据包的初传包 在固定上行子帧上发送时, 预先设定该数据包的 HARQ同步属性为同 预先设定该数据包的 HARQ同步属性为异步 HARQ; 或者, 预先设定 该数据包的 HARQ同步属性均为异步 HARQ。
进一步地, 上述属性配置单元 301 包括: 信息发送子单元, 用于 向用户设备发送信令, 该信令包含数据包的 HARQ同步属性, 其中, 该信令包括无线资源控制信令或者下行控制信息。
进一步地, 上述属性配置单元, 还用于配置该数据包的 HARQ 自 适应属性, 上述 HARQ 自适应属性包括: 自适应 HARQ、 非自适应 HARQ或半自适应 HARQ; 进一步地, 上述属性配置单元 301 , 具体 用于在配置数据包的 HARQ同步属性为同步 HARQ时,配置该数据包 的 HARQ 自适应属性为自适应 HARQ或非自适应 HARQ;在配置数据 包的 HARQ同步属性为异步 HARQ时, 配置该数据包的 HARQ 自适 应属性为自适应 HARQ或半自适应 HARQ。
进一步地, 上述进程配置单元 302还包括: 进程数配置子单元, 用于预先设定不同的上下行子帧配比所对应的增加的 HARQ进程数; 或者, 根据灵活子帧数确定增加的 HARQ进程数; 或者, 通过高层信 令通知用户设备增加的 HARQ进程数。
进一步地, 上述进程配置单元 302还包括: 进程号配置子单元, 对应关系, 例如——对应的关系; 或者, 预先设定数据包的初传包的 或者, 通过下行控制信息来指示该数据包的初传包的 HARQ进程号。 进一步地, 上述属性配置单元 301 , 具体用于当预先设定数据包 的初传包的 HARQ 进程号与上行子帧或预先设定数据包的初传包的 HARQ进程号与灵活子帧的子帧号的对应关系时, 配置该数据包的重 传包为半自适应 HARQ; 或者, 当通过下行控制信息来指示数据包的 初传包的 HARQ进程号时 , 配置该数据包的重传包为自适应 HARQ。
进一步地, 上述控制信息发送单元 303 , 具体用于向用户设备发 送调度数据包的下行控制信息, 该下行控制信息的下行分配指示域中 的一个比特用于指示该数据包的 HARQ同步属性; 或者, 该下行控制 信息的下行分配指示域的一种状态用于指示调度的数据包采用同步 HARQ, 另一种状态用于指示调度的数据包采用异步 HARQ; 或者, 上述下行控制信息的下行分配指示域中的 N ( N为大于 0且小于 4的 整数)种状态用于指示调度的数据包采用同步 HARQ, 其余(4-N )种 状态用于指示调度的数据包采用异步 HARQ; 或者, 上述下行控制信 息的下行分配指示域中的 N ( N为大于 0且小于 4的整数) 种状态用 于指示调度的数据包采用同步 HARQ , 其余(4-N )种状态用于指示调 度的数据包采用异步 HARQ , 该其余(4-N )种状态中的不同状态指示 调度的采用异步 HARQ的数据包所在的子帧号。
本实施例提供的基站, 通过为数据包配置包括同步 HARQ和异步 HARQ的 HARQ同步属性, 并且, 当上述数据包的 HARQ同步属性配 置为异步 HARQ时, 配置数据包的 HARQ进程号, 向用户设备发送调 度该数据包的下行控制信息。 因此, 在动态 TDD应用场景下, 可以根 据当前的信道状况、 业务需求等灵活地采用同步 HARQ或异步 HARQ 的方式进行上行传输, 避免了灵活子帧因定时关系无法动态配置的问 题, 从而使灵活子帧更加灵活地配置成上下行子帧, 提高了下行吞吐 量。
与上述装置相对应地, 本发明实施例还提供了一种用户设备, 可 以实现如图 3所示的方法实施例。 如图 5所示, 该用户设备包括: 控 制信息接收单元 401、 属性确定单元 402和进程确定单元 403。
其中, 上述控制信息接收单元 401接收基站发送的用于调度数据 包的下行控制信息; 上述属性确定单元 402根据该下行控制信息, 确 定数据包的 HARQ 同步属性, 上述 HARQ 同步属性包括同步 HARQ 或异步 HARQ; 进程确定单元 403在该数据包的 HARQ同步属性配置 为异步 HARQ时, 根据上述下行控制信息, 确定该数据包的 HARQ进 程号。
可选地, 上述用户设备还包括: 通知消息接收单元和子帧配置确 定单元。 其中, 上述通知消息接收单元接收基站发送的灵活子帧配置 信息; 该灵活子帧配置信息包括灵活子帧的子帧号信息和灵活子帧的 属性信息中的至少一种信息; 上述子帧配置确定单元根据该灵活子帧 配置信息确定灵活子帧的配置。
进一步地, 上述属性确定单元 402, 具体用于当数据包的初传包 在固定上行子帧上发送时, 预先设定该数据包的 HARQ同步属性为同 预先设定该数据包的 HARQ同步属性为异步 HARQ; 或者, 预先设定 数据包的 HARQ同步属性均为异步 HARQ; 或者, 根据下行控制信息 中的下行分配指示域, 确定数据包的 HARQ同步属性。
可选地, 上述用户设备还包括: 信令接收单元, 用于接收上述基 站发送的无线资源控制信令, 该无线资源控制信令包含该数据包的 HARQ 同步属性; 上述属性确定单元 402 , 具体用于根据上述下行控 制信息和上述无线资源控制信令,确定上述数据包的 HARQ同步属性。
进一步地, 上述属性确定单元, 还用于根据上述下行控制信息确 定该数据包的 HARQ 自适应属性, 上述 HARQ 自适应属性包括: 自适 应 HARQ , 非自适应 HARQ或半自适应 HARQ。 上述进程确定单元 403 , 具体用于在接收上述下行控制信息后, 应关系时, 例如——对应的关系, 根据该对应关系确定该数据包的 HARQ进程号; 或者, 当预先设定数据包的初传包的 HARQ进程号与 灵活子帧的子帧号的对应关系时, 例如——对应的关系, 根据该对应 关系确定该数据包的 HARQ进程号; 或者, 在确定数据包的重传包的 HARQ 自适应属性为半自适应 HARQ时, 根据下行控制信息的空闲比 特确定该数据包的 HARQ进程号。
本实施例提供的用户设备, 通过接收基站发送的数据包对应的下 行控制信息,并根据该下行控制信息确定该数据包的 HARQ同步属性, 并且, 当该数据包的 HARQ同步属性配置为异步 HARQ时, 根据该下 行控制信息确定该数据包的 HARQ进程号。 因此, 在动态 TDD应用 场景下,可以根据当前的信道状况、业务需求等灵活地采用同步 HARQ 或异步 HARQ的方式进行上行传输, 避免了灵活子帧因定时关系无法 动态配置的问题, 从而使灵活子帧更加灵活地配置成上下行子帧, 提 高了下行吞吐量。
与上述方法、 装置相对应地, 本发明实施例还提供了一种数据传 输系统, 如图 6所示, 包括: 基站 501和用户设备 502。
其中, 上述基站 501配置数据包的 HARQ同步属性, 上述 HARQ 同步属性包括同步 HARQ或异步 HARQ;当该数据包的 HARQ同步属 性配置为异步 HARQ时, 配置该数据包的 HARQ进程号; 向上述用户 设备 502发送调度该数据包的下行控制信息。 上述用户设备 502接收 上述基站 501发送的用于调度上述数据包的下行控制信息; 根据该下 行控制信息, 确定该数据包的 HARQ同步属性, 并且, 当该数据包的 HARQ同步属性配置为异步 HARQ时, 根据该下行控制信息确定该数 据包的 HARQ进程号。 基站 501和用户设备 502的具体结构和功能可采用图 4和图 5所 示的实施例内容, 此处不再贅述。
本实施例提供的数据传输系统, 通过基站为数据包配置包括同步 HARQ和异步 HARQ的 HARQ同步属性, 并且, 当该数据包的 HARQ 同步属性配置为异步 HARQ时, 配置该数据包的 HARQ进程号, 向用 户设备发送调度该数据包的下行控制信息。 因此, 在动态 TDD应用场 景下, 可以根据当前的信道状况、 业务需求等灵活地采用同步 HARQ 或异步 HARQ的方式进行上行传输, 避免了灵活子帧因定时关系无法 动态配置的问题, 从而使灵活子帧更加灵活地配置成上下行子帧, 提 高了下行吞吐量。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部 分流程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程 序可存储于一计算机可读取存储介质中, 该程序在执行时, 可包括如 上述各方法的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体 ( Read-Only Memory , ROM ) 或随机存储记忆体 ( Random Access Memory, RAM ) 等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并 不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种数据传输方法, 其特征在于, 包括:
配置数据包的混合自动重传请求 HARQ同步属性,所述 HARQ同 步属性包括同步 HARQ或异步 HARQ,当所述数据包的 HARQ同步属 性配置为异步 HARQ时, 配置所述数据包的 HARQ进程号;
向用户设备发送调度所述数据包的下行控制信息。
2、 根据权利要求 1所述的数据传输方法, 其特征在于, 所述配置 数据包的 HARQ同步属性之前还包括:
向所述用户设备发送灵活子帧配置信息, 所述灵活子帧配置信息 包括灵活子帧的子帧号信, 和灵活子帧的属性信息中的至少一种信 息。
3、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 配置 数据包的 HARQ同步属性包括:
当所述数据包的初传包在固定上行子帧上发送时, 预先设定所述 数据包的 HARQ同步属性为同步 HARQ, 当所述数据包的初传包在作 为上行子帧的灵活子帧上发送时, 预先设定所述数据包的 HARQ同步 属性为异步 HARQ; 或者,
预先设定所述数据包的 HARQ同步属性均为异步 HARQ。
4、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 配置 所述数据包的 HARQ同步属性包括:
向所述用户设备发送信令, 所述信令包含所述数据包的 HARQ同 步属性; 所述信令包括无线资源控制信令或者下行控制信息。
5、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 还包 括, 配置所述数据包的 HARQ 自适应属性, 所述 HARQ 自适应属性包 括: 自适应 HARQ、 非自适应 HARQ或半自适应 HARQ。
6、 根据权利要求 5所述的方法, 其特征在于, 所述配置所述数据 包的 HARQ 自适应属性包括:
在配置所述数据包的 HARQ同步属性为同步 HARQ时,配置所述 数据包的 HARQ 自适应属性为自适应 HARQ或非自适应 HARQ; 在配置所述数据包的 HARQ同步属性为异步 HARQ时,配置所述 数据包的 HARQ 自适应属性为自适应 HARQ或半自适应 HARQ。
7、 根据权利要求 6所述的数据传输方法, 其特征在于, 在配置所 述数据包的 HARQ 自适应属性为半自适应 HARQ时,预先设定指示所 述数据包的重传包的第一调度信息与指示所述数据包的初传包的第一 调度信息一致, 或者, 根据预先设定的规则确定;
所述第一调度信息包括: 调制编码方式 MCS , 传输功率控制 TPC 和解调参考信号循环移位中的至少一种调度信息。
8、 根据权利要求 6所述的数据传输方法, 其特征在于, 所述配置 所述数据包的 HARQ进程号包括:
预先
号的对应关系; 或者,
预先
号的对应关系; 或者,
通过下行控制信息指示所述数据包的初传包的 HARQ进程号。
9、 根据权利要求 8所述的数据传输方法, 其特征在于, 所述配置 数据包的 HARQ 自适应属性包括:
子帧号的对应关系时, 配置所述数据包的重传包为半自适应 HARQ; 或者,
当通过下行控制信息指示所述数据包的初传包的 HARQ 进程号 时, 配置所述数据包的重传包为自适应 HARQ。
10、 根据权利要求 1所述的数据传输方法, 其特征在于, 所述配 置所述数据包的 HARQ进程号之前还包括:
预先设定不同的上下行子帧配比所对应的增加的 HARQ进程数; 或者, 根据灵活子帧数确定增加的 HARQ进程数;
或者, 通过高层信令通知所述用户设备增加的 HARQ进程数。
11、 根据权利要求 1或 2所述的数据传输方法, 其特征在于, 所述下行控制信息的下行分配指示域中的一个比特用于指示所述 数据包的 HARQ同步属性; 或者,
所述下行控制信息的下行分配指示域的一种状态用于指示调度的 所述数据包采用同步 HARQ, 另一种状态用于指示调度的所述数据包 采用异步 HARQ; 或者,
所述下行控制信息的下行分配指示域中的 N种状态用于指示调度 的所述数据包采用同步 HARQ, 其余 4-N种状态用于指示调度的所述 数据包采用异步 HARQ, 其中, N为大于 0且小于 4的整数; 或者, 所述下行控制信息的下行分配指示域中的 N种状态用于指示调度 的所述数据包采用同步 HARQ, 其余 4-N种状态用于指示调度的所述 数据包采用异步 HARQ, 所述其余 4-N种状态中的不同状态指示调度 的采用异步 HARQ的所述数据包所在的子帧号, 其中, N为大于 0且 小于 4的整数。
12、 根据权利要求 1所述的数据传输方法, 其特征在于, 还包括: 当所述数据包的 HARQ同步属性为异步 HARQ时,所述数据包的 下行控制信息和所述数据包按照规定的时序关系进行发送; 和 /或, 当所述数据包的 HARQ同步属性为异步 HARQ时,所述数据包和 所述数据包的正确应答 /错误应答反馈按照规定的时序关系进行发送。
13、 一种数据传输方法, 其特征在于, 包括:
接收基站发送的用于调度数据包的下行控制信息; 根据所述下行控制信息, 确定所述数据包的 HARQ同步属性, 所 述 HARQ 同步属性包括同步 HARQ或异步 HARQ; 当所述数据包的 HARQ同步属性配置为异步 HARQ时, 根据所述下行控制信息确定所 述数据包的 HARQ进程号。
14、 根据权利要求 13所述的数据传输方法, 其特征在于, 所述接 收基站发送的用于调度数据包的下行控制信息之前还包括:
接收所述基站发送的灵活子帧配置信息; 所述灵活子帧配置信息 包括灵活子帧的子帧号信息和属性信息中的至少一种信息;
根据所述灵活子帧配置信息确定灵活子帧的配置。
15、 根据权利要求 13或 14所述的数据传输方法, 其特征在于, 还包括: 根据所述下行控制信息, 确定所述数据包的 HARQ 自适应属 性, 所述 HARQ 自适应属性包括: 自适应 HARQ、 非自适应 HARQ或 半自适应 HARQ。
16、 根据权利要求 13或 14所述的数据传输方法, 其特征在于, 所述根据所述下行控制信息,确定所述数据包的 HARQ同步属性包括: 当所述数据包的初传包在固定上行子帧上发送时, 确定所述数据 包的 HARQ同步属性为同步 HARQ, 当所述数据包的初传包在作为上 行子帧的灵活子帧上发送时, 确定所述数据包的 HARQ同步属性为异 步 HARQ;
或者, 确定所述数据包的 HARQ同步属性均为异步 HARQ;
或者, 根据所述下行控制信息中的下行分配指示域, 确定所述数 据包的 HARQ同步属性。
17、 根据权利要求 13或 14所述的数据传输方法, 其特征在于, 还包括:
接收所述基站发送的无线资源控制信令, 所述无线资源控制信令 包含所述数据包的 HARQ同步属性; 所述根据所述下行控制信息, 确定所述数据包的 HARQ同步属性 包括: 根据所述下行控制信息和所述无线资源控制信令, 确定所述数 据包的 HARQ同步属性。
18、 根据权利要求 13或 14所述的数据传输方法, 其特征在于, 所述根据所述下行控制信息, 确定所述数据包的 HARQ进程号包括: 在接收所述下行控制信息后, 当预先设定所述数据包的初传包的 HARQ进程号与上行子帧的子帧号的对应关系时, 根据所述对应关系 确定所述数据包的 HARQ进程号; 或者,
在接收所述下行控制信息后, 当预先设定所述数据包的初传包的 HARQ进程号与灵活子帧的子帧号的对应关系时, 根据所述对应关系 确定所述数据包的 HARQ进程号; 或者,
在接收所述下行控制信息后, 在确定所述数据包的重传包的 HARQ 自适应属性为半自适应 HARQ时, 根据所述下行控制信息的空 闲比特确定所述数据包的 HARQ进程号。
19、 一种基站, 其特征在于, 包括:
属性配置单元, 用于配置数据包的 HARQ同步属性, 所述 HARQ 同步属性包括同步 HARQ或异步 HARQ;
进程配置单元, 用于当所述数据包的 HARQ同步属性配置为异步 HARQ时, 配置所述数据包的 HARQ进程号; 和
控制信息发送单元, 用于向用户设备发送调度所述数据包的下行 控制信息。
20、 根据权利要求 19所述的基站, 其特征在于, 还包括: 通知消息发送单元, 用于向用户设备发送灵活子帧配置信息, 所 述灵活子帧配置信息包括灵活子帧的子帧号信息和属性信息中的至少 一种信息。
21、 根据权利要求 19或 20所述的基站, 其特征在于, 所述属性 配置单元,具体用于当所述数据包的初传包在固定上行子帧上发送时, 预先设定所述数据包的 HARQ同步属性为同步 HARQ, 当所述数据包 的 HARQ同步属性为异步 HARQ;或者,预先设定所述数据包的 HARQ 同步属性均为异步 HARQ。
22、 根据权利要求 19或 20所述的基站, 其特征在于, 所述属性 配置单元包括:
信息发送子单元, 用于向所述用户设备发送信令, 所述信令包含 所述数据包的 HARQ同步属性, 所述信令包括无线资源控制信令或者 下行控制信息。
23、 根据权利要求 19或 20所述的基站, 其特征在于, 所述属性 配置单元, 还用于配置所述数据包的 HARQ 自适应属性, 所述 HARQ 自适应属性包括: 自适应 HARQ、非自适应 HARQ或半自适应 HARQ。
24、 根据权利要求 23所述的基站, 其特征在于, 所述属性配置单 元, 具体用于在配置所述数据包的 HARQ同步属性为同步 HARQ时, 配置所述数据包的 HARQ 自适应属性为自适应 HARQ 或非自适应 HARQ; 在配置所述数据包的 HARQ同步属性为异步 HARQ时, 配置 所述数据包的 HARQ 自适应属性为自适应 HARQ或半自适应 HARQ。
25、 根据权利要求 23所述的基站, 其特征在于, 所述属性配置单
帧号的对应关系时, 配置所述数据包的重传包为半自适应 HARQ; 或 者,
当通过下行控制信息来指示所述数据包的初传包的 HARQ进程号 时, 配置所述数据包的重传包为自适应 HARQ。
26、 根据权利要求 19或 20所述的基站, 其特征在于, 所述进程 配置单元还包括:
进程数配置子单元, 用于预先设定不同的上下行子帧配比所对应 的增加的 HARQ进程数; 或者, 根据灵活子帧数确定增加的 HARQ进 程数; 或者, 通过高层信令通知所述用户设备增加的 HARQ进程数。
27、 根据权利要求 19或 20所述的基站, 其特征在于, 所述进程 配置单元还包括:
进程号配置子单元, 用于预先设定所述数据包的初传包的 HARQ 进程号与上行子帧的子帧号的对应关系; 或者, 预先设定所述数据包 过下行控制信息来指示所述数据包的初传包的 HARQ进程号。
28、 根据权利要求 19或 20所述的基站, 其特征在于,
所述下行控制信息的下行分配指示域中的一个比特用于指示所述 数据包的 HARQ同步属性; 或者,
所述下行控制信息的下行分配指示域的一种状态用于指示调度的 所述数据包采用同步 HARQ, 另一种状态用于指示调度的所述数据包 采用异步 HARQ; 或者,
所述下行控制信息的下行分配指示域中的 N种状态用于指示调度 的所述数据包采用同步 HARQ, 其余 4-N种状态用于指示调度的所述 数据包采用异步 HARQ, 其中, N为大于 0且小于 4的整数; 或者, 所述下行控制信息的下行分配指示域中的 N种状态用于指示调度 的所述数据包采用同步 HARQ, 其余 4-N种状态用于指示调度的所述 数据包采用异步 HARQ, 所述其余 4-N种状态中的不同状态指示调度 的采用异步 HARQ的所述数据包所在的子帧号, 其中, N为大于 0且 小于 4的整数。
29、 一种用户设备, 其特征在于, 包括: 控制信息接收单元, 用于接收基站发送的用于调度数据包的下行 控制信息;
属性确定单元, 用于根据所述下行控制信息, 确定所述数据包的
HARQ同步属性,所述 HARQ同步属性包括同步 HARQ或异步 HARQ; 和
进程确定单元, 用于当所述数据包的 HARQ同步属性配置为异步 HARQ时, 根据所述下行控制信息确定所述数据包的 HARQ进程号。
30、 根据权利要求 29所述的用户设备, 其特征在于, 还包括: 通知消息接收单元,用于接收所述基站发送的灵活子帧配置信息; 所述灵活子帧配置信息包括灵活子帧的子帧号信息和属性信息中的至 少一种信息; 和
子帧配置确定单元, 用于根据所述灵活子帧配置信息确定灵活子 帧的配置。
31、 根据权利要求 29或 30所述的用户设备, 其特征在于, 所述 属性确定单元, 还用于根据所述下行控制信息确定所述数据包的 HARQ 自适应属性, 所述 HARQ 自适应属性包括: 自适应 HARQ、 非 自适应 HARQ或半自适应 HARQ。
32、 根据权利要求 29或 30所述的用户设备, 其特征在于, 所述 属性确定单元, 具体用于当所述数据包的初传包在固定上行子帧上发 送时, 确定所述数据包的 HARQ同步属性为同步 HARQ, 当所述数据
HARQ同步属性为异步 HARQ;
或者, 确定所述数据包的 HARQ同步属性均为异步 HARQ;
或者, 根据所述下行控制信息中的下行分配指示域, 确定所述数 据包的 HARQ同步属性。
33、 根据权利要求 29或 30所述的用户设备, 其特征在于, 还包 括:
信令接收单元, 用于接收所述基站发送的无线资源控制信令, 所 述无线资源控制信令包含所述数据包的 HARQ同步属性;
所述属性确定单元, 具体用于根据所述下行控制信息和所述无线 资源控制信令, 确定所述数据包的 HARQ同步属性。
34、 根据权利要求 29或 30所述的用户设备, 其特征在于, 所述 进程确定单元, 具体用于在接收所述下行控制信息后, 当预先设定所 述数据包的初传包的 HARQ 进程号与上行子帧的子帧号的对应关系 时, 根据所述对应关系确定所述数据包的 HARQ进程号; 或者, 当预 应关系时,根据所述对应关系确定所述数据包的 HARQ进程号;或者, 在确定所述数据包的重传包的 HARQ 自适应属性为半自适应 HARQ 时, 根据所述下行控制信息的空闲比特确定所述数据包的 HARQ进程 号。
35、 一种数据传输系统, 其特征在于, 包括: 如权利要求 19-28 任一所述的基站和如权利要求 29-34任一所述的用户设备。
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