WO2018095097A1 - 数据重传的方法及装置 - Google Patents
数据重传的方法及装置 Download PDFInfo
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- WO2018095097A1 WO2018095097A1 PCT/CN2017/099784 CN2017099784W WO2018095097A1 WO 2018095097 A1 WO2018095097 A1 WO 2018095097A1 CN 2017099784 W CN2017099784 W CN 2017099784W WO 2018095097 A1 WO2018095097 A1 WO 2018095097A1
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- transmission unit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
Definitions
- the present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for data retransmission.
- the downlink control channel located in the downlink control area performs downlink scheduling allocation and uplink scheduling authorization, where the control area is the most.
- the downlink control allocation DCI includes the PDSCH (Physical Downlink Shared Channel) resource indication, the transmission format, and the HARQ (Hybrid Automatic Repeat reQuest) information, which is related to spatial multiplexing.
- the control information (if spatial multiplexing is used), the downlink scheduling assignment further includes a power control command of the uplink physical channel of the PUCCH (Physical Uplink Control Channel).
- the control information included in the uplink scheduling grant DCI includes a PUSCH (Physical Uplink Shared Channel) resource indication, a transport format, HARQ related information, and a power control command of the PUSCH uplink physical channel.
- PUSCH Physical Uplink Shared Channel
- the terminal obtains the location information of the physical resources scheduled by the user by reading the DCI information carried by the control channel, and further performs corresponding operations of the uplink and downlink data, demodulation, decoding, and the like, and coding and modulation mapping of the uplink data.
- eMBB enhanced mobile internet
- uRLLC ultra-reliable and ultra-low latency communication
- mMTC massive things Network communication
- eMBB has corresponding requirements for peak rate and user experience rate, but may be insensitive to latency.
- the uRLLC service requires ultra-high transmission reliability and lower latency data transmission, which may require a shorter Transmission Time Interval (TTI) in the time domain than the eMBB service for fast scheduling and transmission.
- TTI Transmission Time Interval
- the services are transmitted in different TTI lengths.
- the multiplexing mode may be Frequency Division Multiplexing (FDM, see FIG.
- Time Division Multiplexing means that low-latency services and ordinary non-low-latency services are divided by occupying different frequency bands in the frequency domain.
- Time division multiplexing means that low-latency services and ordinary non-low-latency services occupy different time slot transmissions.
- the basic unit of time division may be an OFDM symbol or a basic time domain scheduling unit, such as a TTI, as shown in Figures 1A and 1B.
- the embodiments of the present disclosure provide a method and an apparatus for data retransmission, which solves the problem of the consumption of physical resources caused by a large number of retransmissions at the transmitting end, and the complexity and work due to the need for multiple decoding operations at the receiving end.
- the problem of increased consumption is a problem of increased consumption.
- a method for data retransmission comprising:
- the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied;
- the indication message is used to indicate whether the data of the user who is occupied by the scheduling resource in the base station or the user data scheduling transmission unit is retransmitted.
- the data scheduling transmission unit includes but is not limited to the following structure:
- the sending an indication message includes:
- the indication message is sent in a cell-specific manner or in a user-specific manner.
- the common control channel after the end of the data transmission in the data scheduling transmission unit sends the indication message in a cell-specific or user-specific manner.
- the configuration information of the common control channel is indicated by other control channels in the data scheduling transmission unit, or indicated by a system broadcast message, or indicated by high layer signaling.
- the indication information is sent in a user-specific manner on a user-specific control channel.
- the configuration information of the user-specific control channel is indicated by other control channels in the data scheduling transmission unit, or by higher layer signaling.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, indicating that the base station will retransmit the user that the scheduling resource is occupied in the data scheduling transmission unit.
- the user does not initiate a HARQ operation, or does not initiate some or all of the data processing flow after data reception;
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted, it indicates that the user performs a data processing operation according to a preset data processing flow.
- the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is retransmitted, and further indicates that the user waits for the data retransmitted by the base station to arrive before starting the hybrid automatic repeat request process, or data.
- the data processing flow after receiving.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is to be retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission and/or the retransmission. form.
- the form of the retransmission includes retransmitting only data corresponding to the occupied resource, or retransmitting all data transmitted by the current data scheduling transmission unit of the user or a different redundancy version thereof.
- an apparatus for data retransmission comprising:
- a sending module configured to send an indication message after the data transmission in the data scheduling transmission unit ends
- the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied;
- the indication message is used to indicate whether the data of the user who is occupied by the scheduling resource in the base station or the user data scheduling transmission unit is retransmitted.
- the data scheduling transmission unit includes but is not limited to the following structure:
- the sending module is further configured to send the indication message in a cell-specific manner or in a user-specific manner.
- the device further includes:
- the first indication module is configured to send the indication message in a cell-specific or user-specific manner after the end of the data transmission in the data scheduling transmission unit.
- the configuration information of the common control channel is indicated by other control channels in the data scheduling transmission unit, or indicated by a system broadcast message, or indicated by high layer signaling.
- the device further includes:
- the second indication module is configured to send the indication information in a user-specific manner on a user-specific control channel.
- the user-specific control channel is indicated by other control channels in the data scheduling transmission unit or by higher layer signaling.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, indicating that the base station will retransmit the user that the scheduling resource is occupied in the data scheduling transmission unit.
- the user does not initiate HARQ operations; or does not start Part or all of the data processing flow after data reception;
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted, it indicates that the user performs a data processing operation according to a preset data processing flow.
- the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is retransmitted, and further indicates that the user waits for the data retransmitted by the base station to arrive before starting the hybrid automatic repeat request process, or data.
- the data processing flow after receiving.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is to be retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission and/or the retransmission. form.
- the form of the retransmission includes retransmitting only data corresponding to the occupied resource, or retransmitting all data transmitted by the current data scheduling transmission unit of the user or a different redundancy version thereof.
- a method for data retransmission comprising:
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the HARQ operation is not started;
- the operation is performed according to a preset normal data processing flow.
- the indication message indicates that when the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, the data waiting for the retransmission of the base station is reached, and then the hybrid automatic repeat request process is started, or after the data is received. Data processing flow.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is to be retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission and/or the retransmission. form.
- the form of the retransmission includes only retransmitting data corresponding to the occupied resource, or Retransmit all data transmitted by the user's current data scheduling transmission unit or its different redundancy versions.
- an apparatus for data retransmission comprising:
- a receiving module configured to receive indication information sent by the base station
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the device further includes:
- a processing module configured to: if the indication message indicates that data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, does not initiate a HARQ operation; and/or
- the operation is performed according to a preset normal data processing flow.
- the indication message indicates that when the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, the data waiting for the retransmission of the base station is reached, and then the hybrid automatic repeat request process is started, or after the data is received. Data processing flow.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is to be retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission and/or the retransmission. form.
- the form of the retransmission includes retransmitting only data corresponding to the occupied resource, or retransmitting all data transmitted by the current data scheduling transmission unit of the user or a different redundancy version thereof.
- an apparatus for data retransmission comprising: a processor, a memory, and a transceiver, wherein:
- the processor is configured to read a program in the memory and perform the following process:
- the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied;
- the indication message is used to indicate whether the data of the user who is used by the scheduling resource in the base station or the user data scheduling transmission unit is retransmitted.
- the transceiver is configured to receive and transmit data
- the memory is capable of storing data used by the processor when performing operations.
- an apparatus for data retransmission comprising: a processor, a memory, and a transceiver, wherein:
- the processor is configured to read a program in the memory and perform the following process:
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the transceiver is configured to receive and transmit data
- the memory is capable of storing data used by the processor when performing operations.
- a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following process for data transmission indication on the network side :
- the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied;
- the indication message is used to indicate whether the data of the user who is occupied by the scheduling resource in the base station or the user data scheduling transmission unit is retransmitted.
- a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following process for data transmission indication on the network side :
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- an indication message is sent, indicating whether the transmitting end (which may be a base station or a user equipment (UE)) retransmits the data corresponding to the occupied resource, for example, when the indication is
- the message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, indicating that the user (or UE) does not need to perform HARQ operation on the currently received data, and needs to wait for the data retransmitted by the base station to arrive.
- the HARQ operation is performed, and the time-frequency resource or format of the retransmission can be further indicated.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted, the user processes the data in the current data scheduling transmission unit according to the normal data receiving process.
- the transmitting end in this embodiment can arrange the retransmitted of the contaminated data as soon as possible, and the physical layer HARQ is started compared with the receiving end, and then the retransmission is scheduled by the transmitting end, so that the data can be retransmitted more quickly, and the non-improvement is improved.
- the receiving end may not perform decoding operation on the current data, but wait for the data retransmitted by the transmitting end to arrive after being merged. By performing operations such as demodulation and decoding, the power loss at the receiving end can be reduced.
- FIGS. 1A and 1B are schematic diagrams showing multiplexing of low-latency services and non-low-latency services in the related art
- FIG. 2 is a schematic flow chart of a method for data retransmission in some embodiments of the present disclosure
- FIG. 3 is a schematic diagram of a common control channel after data transmission ends in some embodiments of the present disclosure
- FIG. 4 is a schematic diagram of a UE-specific control channel after data transmission ends in some embodiments of the present disclosure
- FIG. 5 is a schematic diagram indicating that a UE does not need to initiate a HARQ operation on data of a current TTI transmission in some embodiments of the present disclosure
- FIG. 6 is a block diagram of an apparatus for data retransmission in some embodiments of the present disclosure.
- FIG. 7 is a schematic flow chart of another method for data retransmission in some embodiments of the present disclosure.
- FIG. 8 is a block diagram of an apparatus for data retransmission in some embodiments of the present disclosure.
- embodiments of the present disclosure may be implemented as a system, apparatus, device, method, or computer program product.
- embodiments of the present disclosure may be embodied in the form of full hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.
- Step 201 After the data transmission in the data scheduling transmission unit ends, sending an indication message, where the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied; and/or the indication The message is used to indicate whether the data corresponding to the occupied scheduling resource in the base station or the user data scheduling transmission unit is retransmitted.
- the data scheduling transmission unit is a time and frequency unit of one data scheduling transmission, and may be one or more TTIs, subframes, slots, mini slots (mini -slot) and so on.
- the data transmission in the data scheduling transmission unit After the data transmission in the data scheduling transmission unit is completed, it may be after one data scheduling transmission of all users ends, or after a data scheduling transmission of a certain user ends.
- the data scheduling transmission unit includes but is not limited to the following structure:
- At least one downlink transmission portion eg, including a downlink control channel and/or a downlink data transmission portion
- at least one uplink transmission portion eg, including an uplink data transmission portion and/or an uplink control channel
- Only the uplink transmission part (or may also be referred to as a pure uplink transmission unit).
- the downlink transmission part includes a part of time slot resources in the data scheduling transmission unit, and can be used for transmitting downlink service data information or control information
- the uplink transmission part includes a part of time-frequency resources in the data scheduling unit, and can be used for transmitting uplink service data information or control information.
- the data scheduling transmission unit includes both the downlink transmission part and the uplink transmission part, after the data transmission in the so-called data scheduling transmission unit ends, the data transmission in a certain direction is completed, for example, after the data transmission in the downlink part ends. , or after the data transmission of the uplink part or both.
- control information may be sent after the end of the non-low-latency service data transmission, instead of transmitting the control information only at the location where the TTI starts, as in the LTE system in the related art, to inform the UE that its resources are occupied in the current TTI.
- the technical solution in this embodiment can avoid that the currently scheduled non-low latency users need to start the HARQ process when the data is severely punctured, and compensate for the loss caused by data puncturing through data retransmission. The problem.
- the embodiment of the present disclosure is also applicable to a case where a service with a lower priority is occupied by a service with a higher priority, and at this time, a data corresponding to a service with a lower priority is retransmitted.
- the indication message may be sent in the following two manners:
- Manner 1 The indication message is sent in a cell-specific manner or in a user-specific manner in a common control channel.
- a common control channel may be set, in which the cell may be cell-specific or A situation in which the user's scheduling resource area is occupied by other users is sent in a UE-specific manner.
- Manner 2 Send an indication message on a control channel dedicated to the user.
- the control area reserved by the UE is reserved, and the current scheduling area of the user is used by other users.
- the user may temporarily transmit a higher priority service (for example, a service requiring a higher delay), and then occupy a part of the resource scheduled for the lower priority service of the user according to the transmission format, for example, The same modulation and coding mode is used for transmission, and the information needs to be indicated to the base station.
- a higher priority service for example, a service requiring a higher delay
- Sending the indication message in a cell-specific or user-specific manner on the common control channel, where the configuration information of the common control channel after the data transmission in the data scheduling transmission unit is ended may be indicated by other control channels in the data scheduling transmission unit, or It is indicated by the system broadcast message or by high-level signaling, and is of course not limited thereto.
- the UE-specific control channel after the end of the data transmission may be indicated by the UE-specific control channel indication or the high-layer signaling indication, such as the RRC signaling indication, at the start of the data scheduling transmission unit.
- the method further includes:
- the message indicates, or is indicated by higher layer signaling.
- the method further includes:
- the indication information is sent by the UE-specific control channel in a UE-specific manner, where the UE-specific control channel is indicated by other control channels in the data scheduling transmission unit, or by higher layer signaling.
- sending an indication message in the foregoing control channel may be used to indicate:
- Indication a a situation in which a scheduling resource is occupied by a base station or a user data scheduling transmission unit;
- Indicates b Whether the data of the user who is using the scheduling resource within the base station or user data scheduling transmission unit will be retransmitted.
- the base station (or eNB, gNB) will retransmit the data.
- the data of the user who is scheduled to be occupied by the scheduling resource in the transmission unit (retransmitting the data corresponding to the resource occupied by other users, and also transmitting all the data of the currently scheduled user), the UE (or the user) does not need to schedule the transmission of the current data.
- the data transmitted by the unit initiates a HARQ operation (for example, the user does not need to send ACK/NACK feedback to the base station, etc.), or does not start part or all of the data processing flow after the data is received, but waits for the data retransmitted by the base station to be reached. Restart the hybrid automatic retransmission process, or some or all of the data processing flow.
- the data processing flow includes at least one of the following operations: FFT (Fast Fourier Transform) / IFFT (Inverse Fast Fourier Transform) Inverse transform operation, data equalization, data demodulation, deinterleaving, translation decoding, verification, feedback ACK/NACK and other processes.
- the UE may not perform decoding operation on the current data, but wait for the data retransmitted by the base station to arrive, perform merging, and then perform demodulation and decoding. Operation can reduce the power loss of the UE.
- the base station can schedule the retransmission of the contaminated data as soon as possible, and the UE initiates the physical layer HARQ, and then the base station arranges retransmission, which can retransmit the data faster and improve the experience rate of the non-low latency user.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted (ie, the indication message is a negative message), it indicates that the UE performs a data processing operation according to a normal data processing flow.
- the determining message and the negative message correspond to the indication b, and only represent two different states, not necessarily a logical state, or may be different states represented by different bits, and are referred to as a certain message or a negative message for convenience of description. .
- the indication message indicates that the data of the user in which the scheduling resource is occupied in the data scheduling transmission unit is retransmitted (ie, the indication message is a determination message), indicating the time and frequency domain location of the retransmission of the data;
- the indication is transmitted on the Nth frequency domain resource block on the next Mth data scheduling transmission unit.
- the location of the retransmission is occupied by the low latency service in the current data scheduling transmission unit.
- the location of the frequency domain resources is the same. This situation will limit the scheduling of subsequent data scheduling transmission units.
- the indication of the location of the retransmission resources is relatively simple. It only needs to indicate the data transmission scheduling unit that appears, or a certain retransmission is agreed. The data transmission scheduling unit is delayed without indication.
- the retransmission mode can also be as follows:
- Retransmission mode 1 Retransmit only the data corresponding to the resources occupied by the low-latency service, and adapt according to the retransmitted resources. (When the allocated retransmission resources are identical to the occupied resources, they can be directly transmitted. When the allocated retransmission resource is larger than occupied, the reliability may be increased by using a repeated method; when the allocated retransmission resource is less than the occupied resource, the puncturing may be performed, and the puncturing may be performed according to an agreed rule, such as playing The last bit)
- Retransmission mode 2 Retransmission according to different redundancy versions (RVs) corresponding to all data of the current user in the HARQ process, that is, although the data of a certain UE in the current data scheduling transmission unit is only Partially due to low-latency service occupation, it cannot be transmitted.
- RVs redundancy versions
- MAC Media Access Control
- the RV version contains the same code output but different rates.
- the matching version also contains the same rate matching version.
- the indication of the UE by the base station may be cell-specific.
- the punctured data of all UEs will perform unified retransmission or non-retransmission operations, and the base station needs to consider when a large proportion of UEs need to retransmit, and send a retransmission command.
- the location of data retransmission of each UE if still located in the same resource location of the data that is currently punctured by the subsequent data scheduling transmission unit, the retransmission location may be a cell-specific notification, if necessary for each
- the retransmission of the UE specifies the time-frequency location, and still requires a UE-specific retransmission location indication for each UE.
- the indication of the UE by the base station may also be UE-specific.
- the indication message can indicate a resource location occupied by each UE, and further, can also indicate a time-frequency location retransmitted by each UE.
- the base station can determine the priority of those services that are punctured by the low latency service to determine whether to perform immediate retransmission for the UE. For example, for a UE, if his eMBB data If it is polluted many times and it cannot receive it correctly, the base station sets a high priority for the polluted data of the UE, and can reserve resources for retransmission.
- an indication message is sent to indicate whether the transmitting end retransmits the data corresponding to the occupied resource, and when the indication message indicates the data scheduling transmission unit
- the data of the user whose scheduling resource is occupied is retransmitted, it indicates that the base station will retransmit the data of the user whose scheduling resource is occupied in the data scheduling transmission unit.
- the user does not need to perform HARQ operation on the currently received data, and needs to wait for heavy
- the HARQ operation is performed, and the time-frequency resource or format of the retransmission can be further instructed.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted, it indicates that the user operates according to the preset normal data processing flow processing data.
- the transmitting end in this embodiment can arrange the retransmitted of the contaminated data as soon as possible, and the physical layer HARQ is started compared with the receiving end, and then the retransmission is scheduled by the transmitting end, so that the data can be retransmitted more quickly, and the non-improvement is improved.
- the receiving end may not perform decoding operation on the current data, but wait for the data retransmitted by the transmitting end to arrive after being merged. By performing operations such as demodulation and decoding, the power loss at the receiving end can be reduced.
- an apparatus for data retransmission comprising:
- the sending module 601 is configured to send an indication message after the data transmission in the data scheduling transmission unit ends;
- the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied;
- the indication message is used to indicate whether the data of the user who is scheduled to be occupied by the base station or the user in the data transmission unit is retransmitted.
- the data scheduling transmission unit is a time unit of data scheduling transmission, and may be one or more TTIs, subframes, time slots, mini slots, etc., and the data transmission unit includes but not Limited to the following structure:
- the sending module is further configured to:
- the indication message is sent in a cell-specific manner or in a UE-specific manner in a common control channel; or the indication message is sent on a UE-specific control channel.
- the device further includes:
- a first indication module configured to send the indication message in a cell-specific or UE-specific manner on the common control channel, where the configuration information of the common control channel after the data transmission in the data scheduling transmission unit ends is passed through the data scheduling transmission unit.
- Other control channel indications are indicated either by system broadcast message indication or by higher layer signaling.
- the device further includes:
- a second indication module configured to send the indication information in a UE-specific manner on a UE-specific control channel, where optionally, the UE-specific control channel is indicated by other control channels in the data scheduling transmission unit, or higher layer signaling Instructions.
- the indication message indicates that the data of the user in which the scheduling resource is occupied in the data scheduling transmission unit is retransmitted, it indicates that the base station will retransmit the data in the scheduling transmission unit. Scheduling data of a user whose resources are occupied, the user does not initiate a HARQ operation;
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is not retransmitted, it indicates that the user operates according to the preset normal data processing flow processing data.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, it also indicates that the user waits for the data retransmitted by the base station to arrive, and then starts the hybrid automatic weight. Pass the request process, or the data processing flow after the data is received.
- the indication message when the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission and/or Or the form of retransmission.
- the form of the retransmission includes retransmitting only the data corresponding to the occupied resource, or retransmitting all data transmitted by the current data scheduling transmission unit of the UE or all of its data (current user) Corresponding) different redundancy versions.
- Step 701 Receive indication information sent by the base station.
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the HARQ operation is not started if the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the operation is performed according to a preset normal data processing flow.
- the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted
- the data that needs to be retransmitted by the base station is required to arrive before the hybrid automatic repeat request is started. Process, or data processing flow after data reception.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission. And / or retransmission form.
- the form of the retransmission includes retransmitting only the data corresponding to the occupied resource, or retransmitting all data or different redundancy versions transmitted by the current data scheduling transmission unit of the user.
- an apparatus for data retransmission comprising:
- the receiving module 801 is configured to receive indication information sent by the base station
- the indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied;
- the indication message is used to indicate whether data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted.
- the apparatus 800 further includes:
- a processing module configured to: if the indication message indicates that data of a user whose scheduling resource is occupied in the data scheduling transmission unit is retransmitted, does not start a HARQ operation; and/or
- the operation is performed according to a preset normal data processing flow.
- the indication message indicates that the data is scheduled to be transmitted in the transmission unit.
- the data of the user whose source is occupied is retransmitted, it is necessary to wait for the data retransmitted by the base station to arrive before starting the hybrid automatic retransmission process or the data processing flow after the data is received.
- the indication message when the indication message indicates that the data of the user that the scheduling resource is occupied in the data scheduling transmission unit is retransmitted, the indication message further indicates the time and/or the frequency domain location of the retransmission. And / or retransmission form.
- the form of the retransmission includes retransmitting only the data corresponding to the occupied resource, or retransmitting all data or different redundancy versions transmitted by the current data scheduling transmission unit of the user.
- system and “network” are used interchangeably herein.
- B corresponding to A means that B is associated with A, and B can be determined from A.
- determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
- the disclosed method and apparatus may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- a direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
本公开实施例提供一种数据重传的方法及装置,该方法包括:在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
Description
相关申请的交叉引用
本申请主张在2016年11月22日在中国提交的中国专利申请No.201611044683.6的优先权,其全部内容通过引用包含于此。
本公开涉及通信技术领域,尤其涉及一种数据重传的方法及装置。
在LTE(Long Term Evolution,长期演进)现行帧结构中,通过位于下行控制区域的下行控制信道(承载下行控制信息,DCI:Downlink control information),进行下行调度分配及上行调度授权,其中控制区域最多占用3个OFDM(Orthogonal Frequency Division Multiplexing,正交频分复用)符号(对于1.4MHz系统带宽,占用4个)。
在下行调度分配DCI中,包含的控制信息有PDSCH(Physical Downlink Shared Channel,物理下行共享信道)资源指示,传输格式,HARQ(Hybrid Automatic Repeat reQuest,混合自动重传请求)信息,与空间复用相关的控制信息(如果采用了空间复用的话),下行调度分配还包含了PUCCH(Physical Uplink Control Channel,物理上行链路控制信道)上行物理信道的功控命令。
上行调度授权DCI中包含的控制信息包括PUSCH(Physical Uplink Shared Channel,物理上行共享信道)资源指示,传输格式,HARQ相关的信息,还包括PUSCH上行物理信道的功控命令。
终端通过读取控制信道承载的DCI信息,获得调度给用户的物理资源的位置信息,进而进行上下行数据的相应操作,如下行数据的解调,译码等,上行数据的编码调制映射等。
在5G系统设计中,需要支持多种具有各自明显特征的业务,包括增强型移动互联网(eMBB,enhance Mobile Broadband),超高可靠性与超低时延通信(uRLLC,ultra Reliable&Low Latency Communication)以及海量物联
网通信(mMTC,massive Machine Type Communication)。eMBB对峰值速率和用户体验速率有相应的要求,但对时延可能不敏感。uRLLC业务要求超高的传输可靠性和更低时延的数据传输,这就可能要求时域上比eMBB业务更短的传输时间间隔(Transmission Time Interval,TTI)以实现快速的调度和传输,两种业务采用不同的TTI长度进行传输,复用的方式可以是频分复用(Frequency Division Multiplexing,FDM,参见图1B),或时分复用(Time Division Multiplexing,TDM,参见图1A)。频分复用是指低时延业务和普通非低时延业务通过在频域上占用不同的频带进行划分。时分复用是指低时延业务和普通非低时延业务占用不同的时隙传输。时分的基本单元可以是OFDM符号,也可以是一个基本的时域调度单元,比如TTI,如图1A和1B所示。
对应低时延业务与非低时延业务时分复用的情况,由于非低时延业务的TTI长度较长,且是在TTI开始时刻就做了整个TTI的调度,无法预知传输开始后低时延业务的到来并为之预留资源,为了保证低时延业务的可靠传输,发送端的一种可能的做法是将非低时延业务的数据进行打孔,这样必然影响非低时延业务的接收性能,在数据被打孔严重的情况下,当前被调度的非低时延用户均需要启动HARQ流程,通过数据的重传弥补数据打孔带来的损失。
然而,对于相关技术中存在的发送端大量重传导致物理资源的消耗,同时接收端均需要进行多次的译码操作,导致复杂度和功耗增加的问题,目前尚未提出有效的解决方案。
发明内容
鉴于上述技术问题,本公开实施例提供一种数据重传的方法及装置,解决由于发送端大量重传导致物理资源的消耗,以及由于接收端需要进行多次的译码操作导致复杂度和功耗增加的问题。
依据本公开实施例的一个方面,提供了一种数据重传的方法,所述方法包括:
在数据调度传输单元内的数据传输结束后,发送一指示消息;
其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
可选地,所述数据调度传输单元包括但不限于如下结构:
包含至少一个下行传输部分和至少一个上行传输部分,或者
只包含下行传输部分,或者
只包含上行传输部分。
可选地,所述发送一指示消息,包括:
以小区专属的方式或者以用户专属的方式发送所述指示消息。
可选地,在数据调度传输单元内的数据传输结束后的公共控制信道以小区专属或用户专属的方式发送指示消息。
可选地,所述公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
可选地,在用户专属的控制信道以用户专属的方式发送所述指示信息。
可选地,用户专属的控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过高层信令指示。
可选地,对于下行的传输,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,所述用户不启动HARQ操作,或者不启动数据接收后的部分或全部数据处理流程;
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的数据处理流程进行数据处理操作。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,还表示用户等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或其不同的冗余版本。
依据本公开实施例的第二个方面,还提供了一种数据重传的装置,所述装置包括:
发送模块,用于在数据调度传输单元内的数据传输结束后,发送一指示消息;
其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
可选地,所述数据调度传输单元包括但不限于如下结构:
包含至少一个下行传输部分和至少一个上行传输部分,或者
只包含下行传输部分,或者
只包含上行传输部分。
可选地,所述发送模块进一步用于:以小区专属的方式或者以用户专属的方式发送所述指示消息。
可选地,所述装置还包括:
第一指示模块,用于在数据调度传输单元内的数据传输结束后的公共控制信道以小区专属或用户专属的方式发送指示消息。
可选地,所述公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
可选地,所述装置还包括:
第二指示模块,用于在用户专属的控制信道以用户专属的方式发送所述指示信息。
可选地,所述用户专属的控制信道通过数据调度传输单元内的其他控制信道指示,或者通过高层信令指示。
可选地,对于下行的传输,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,所述用户不启动HARQ操作;或者不启动
数据接收后的部分或全部数据处理流程;
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的数据处理流程进行数据处理操作。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,还表示用户等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
依据本公开实施例的第三个方面,提供了一种数据重传的方法,所述方法包括:
接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
可选地,若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;或者
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者
重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
依据本公开实施例的第四个方面,还提供了一种数据重传的装置,所述装置包括:
接收模块,用于接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
可选地,所述装置还包括:
处理模块,用于若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;和/或者
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
依据本公开实施例的第五个方面,还提供了一种数据重传的装置,包括:处理器、存储器和收发机,其中:
所述处理器用于读取存储器中的程序,执行下列过程:
在数据调度传输单元内的数据传输结束后,发送一指示消息;
其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传,
所述收发机用于接收和发送数据,
所述存储器能够存储处理器在执行操作时所使用的数据。
依据本公开实施例的第六个方面,还提供了一种数据重传的装置,包括:处理器、存储器和收发机,其中:
所述处理器用于读取存储器中的程序,执行下列过程:
接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传,
所述收发机用于接收和发送数据,
所述存储器能够存储处理器在执行操作时所使用的数据。
依据本公开实施例的第七个方面,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时,实现下列的用于网络侧的数据传输指示的过程:
在数据调度传输单元内的数据传输结束后,发送一指示消息;
其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
依据本公开实施例的第八个方面,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时,实现下列的用于网络侧的数据传输指示的过程:
接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
上述技术方案中的一个技术方案具有如下优点或有益效果:在数据调度
传输单元内的数据传输结束后,发送一指示消息,指示发送端(可以是基站或用户设备(User Equipment,UE))是否会对被占用的资源处对应的数据进行重传,例如,当指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,表示用户(或者称为UE)不需要对当前收到的数据进行HARQ操作,需等待基站重传的数据到达后再进行HARQ操作,重传的时频资源或格式可以进行进一步指示。当指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,用户按照正常的数据接收流程处理当前数据调度传输单元内的数据。
与相关技术相比,本实施例中的发送端能够尽快安排被污染的数据重传,相比接收端启动物理层HARQ,再由发送端安排重传,能够更快的重传数据,改善非低时延用户的体验速率;当接收端不需要对当前调度时间单元的数据启动HARQ时,接收端可以不对当前数据实施译码操作,而是等待发送端重传的数据到达后进行合并后再进行解调译码等操作,能够降低接收端的功率损耗。
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1A和1B为相关技术中低时延业务与非低时延业务复用的示意图;
图2为本公开的一些实施例中数据重传的一个方法流程示意图;
图3为本公开的一些实施例中数据传输结束后的公共控制信道示意图;
图4为本公开的一些实施例中数据传输结束后的UE专属控制信道示意图;
图5为本公开的一些实施例中指示UE不需要对当前TTI传输的数据启动HARQ操作的示意图;
图6为本公开的一些实施例中数据重传的装置框图;
图7为本公开的一些实施例中数据重传的另一方法流程示意图;
图8为本公开的一些实施例中数据重传的装置框图。
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
本领域技术人员知道,本公开的实施方式可以实现为一种系统、装置、设备、方法或计算机程序产品。因此,本公开的实施例可以具体实现为以下形式:完全的硬件、完全的软件(包括固件、驻留软件、微代码等),或者硬件和软件结合的形式。
需要说明的是,本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区分类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便在这里描述的本公开的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如一系列步骤或单元的,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其他步骤或单元。
需要说明的是,在不冲突的情况下,本公开的实施例以及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本公开的技术方案。
参见图2,图中示出了一种数据重传的方法,具体步骤如下:
步骤201、在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内被占用的调度资源处对应的数据是否会被重传。
在本实施例中,可选地,数据调度传输单元是一次数据调度传输的时间和频率单位,可以是一个或多个TTI、子帧(subframe)、时隙(slot)、迷你时隙(mini-slot)等。
所述的数据调度传输单元内的数据传输结束后,可以是所有用户的一次数据调度传输结束后,也可以是某个用户的一次数据调度传输结束后。
该数据调度传输单元包括但不限于如下结构:
包含至少一个下行传输部分(例如包含下行的控制信道和/或下行数据传输部分)和至少一个上行传输部分(例如包含上行数据传输部分和/或上行控制信道),或者
只包含下行传输部分(或者也可以称为纯下行传输单元),或者
只包含上行传输部分(或者也可以称为纯上行传输单元)。
下行传输部分包括数据调度传输单元内的一部分时隙资源,可用于传输下行业务数据信息或者控制信息,上行传输部分包括数据调度单元内的一部分时频资源,可用于传输上行业务数据信息或者控制信息。当数据调度传输单元为既包含下行传输部分也包含上行传输部分时,所谓的数据调度传输单元内的数据传输结束后是在某一个方向的数据传输接束后,例如下行部分的数据传输结束后,或者上行部分的数据传输接束后或两者均有。
考虑到在数据调度传输单元的起始阶段传输的控制信道调度非低时延业务调度时还无法预知后续资源被低时延业务或其他优先级较高需要尽快传输的业务占用的情况,在本实施例中,可以通过在非低时延业务数据传输结束后发送控制信息,而不是像相关技术中的LTE系统那样只在TTI开始的位置发送控制信息,告知UE当前TTI内其资源被占用的情况,即本实施例中的技术方案能够避免在数据被打孔严重的情况下,当前被调度的非低时延用户均需要启动HARQ流程,通过数据的重传弥补数据打孔带来的损失的问题。需要说明的是,本公开实施例同样适用于具有较低优先级的业务被较高优先级的业务占用资源的情况,此时重传的是较低优先级的业务所对应的数据。
在本实施例中,可选地,指示消息的发送方式可以有如下两种:
方式一、在公共控制信道内以小区专属的方式或者以用户专属的方式发送所述指示消息。
参见图3,在数据调度传输单元内的数据传输结束后,可以设置一个公共控制信道,在该公共控制信道内可以以小区专属(cell specific)的方式或
以用户设备专属(UE specific)的方式发送指示用户的调度资源区域被其他用户占用的情况。
方式二、在用户专属的控制信道发送指示消息。
参见图4,在用户调度的资源区域数据传输结束后预留UE专属的控制区域,发送用户当前的调度区域被其他用户占用的情况。
需要说明的是,对于下行的传输,可能出现基站调度给某个UE的资源中的一部分被其他用户占用的情况。对于上行的传输,用户可能临时出现更高优先级的业务需要传输(比如需要对时延要求较高的业务),于是占用部分调度给该用户较低优先级业务的资源按照其传输格式,比如相同的调制编码方式进行传输,这时需要通过信息指示给基站。
在公共控制信道以小区专属或用户专属的方式发送指示消息,其中,数据调度传输单元内的数据传输结束后的公共控制信道的配置信息可以是通过数据调度传输单元内的其他控制信道指示,或者是通过系统广播消息指示,或者通过高层信令指示,当然也并不限于此。
数据传输结束后的UE专属的控制信道可以通过数据调度传输单元起始位置的UE专属的控制信道指示或者高层信令指示,如RRC信令指示。
具体地,在本实施例中,可选地,在上述步骤201之后,所述方法还包括:
在公共控制信道以小区专属或UE专属的方式发送指示消息,其中数据调度传输单元内的数据传输结束后的公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
具体地,在本实施例中,可选地,在上述步骤201之后,所述方法还包括:
在UE专属的控制信道以UE专属的方式发送所述指示信息,其中UE专属的控制信道通过数据调度传输单元内的其他控制信道指示,或者高层信令指示。
在本实施例中,在上述控制信道内发送指示消息,可以用于指示:
指示a:基站或用户数据调度传输单元内调度资源被占用的情况;或者
指示b:基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
需要说明的是,当指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传(即指示消息是确定消息)时,基站(或者称为eNB、gNB)将会重传数据调度传输单元内调度资源被占用的用户(重传被其他用户占用资源处对应的数据,也可以传输当前调度用户的所有数据)的数据,UE(或者称为用户)不需要对当前数据调度传输单元(例如TTI)传输的数据启动HARQ操作(例如用户不需要发送ACK/NACK反馈给基站等),或者不启动数据接收后的部分或全部数据处理流程,而是等待基站重传的数据达到后再启动混合自动重传流程,或者部分或全部的数据处理流程,数据处理流程包括至少如下操作之一:FFT(Fast Fourier Transform,快速傅里叶变换)/IFFT(Inverse Fast Fourier Transform,快速傅里叶逆变换)操作,数据均衡,数据解调、解交织,译解码、校验、反馈ACK/NACK等流程。
参见图5,当UE不需要对当前数据调度传输单元的数据启动HARQ时,UE可以不对当前数据实施译码操作,而是等待基站重传的数据到达后进行合并后再进行解调译码等操作,能够降低UE的功率损耗。在这种方式下,基站能够尽快安排被污染的数据重传,相比UE启动物理层HARQ,再由基站安排重传,能够更快的重传数据,改善非低时延用户的体验速率。
当指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传(即指示消息为否定消息)时,表明UE按照正常的数据处理流程进行数据处理操作。
需要说明的是,确定消息和否定消息对应于指示b,只表示两种不同的状态,不一定是逻辑状态,也可能是不同比特表现出来的不同状态,为了便于描述称为确定消息或否定消息。
当指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传(即指示消息是确定消息)时,指示数据的重传的时间和频域位置;
例如指示是在接下来的第M个数据调度传输单元上的第N个频域资源块上传输。
一种可能性是重传的位置与当前数据调度传输单元中被低时延业务占用
的频域资源位置相同,这种情况会对后续数据调度传输单元的调度做出限制,但对于重传资源位置的指示比较简单,只需要指示出现的数据传输调度单元,或者约定一定的重传的数据传输调度单元延迟,而不需要指示。
在本实施例中,重传的方式也可以有如下两种:
重传方式一、仅仅重传被低时延业务占用的资源处对应的数据,并根据重传的资源进行适配(当分配的重传资源与被占用的资源完全相同时,直接传输即可;当分配的重传资源大于被占用时,可以采用重复的方法增加可靠性;当分配的重传资源少于被占用的资源时,可以进行打孔,打孔可以按照约定的规则,比如打掉最后的一些比特)
重传方式二、按照HARQ过程中的(当前用户的所有数据对应的)不同的冗余版本(Redundancy Version,RV)来进行重传,即虽然当前数据调度传输单元中某个UE的数据仅有部分由于被低时延业务占用而不能传输,但在基站安排重传时按照媒体访问控制(Media Access Control,MAC)层重传的RV版本进行重传,RV版本包含相同编码输出但不同的速率匹配版本,也包含相同的速率匹配版本。
需要说明的是,基站对UE的指示可以是小区专属的。
这种情况下所有UE的被打孔数据都会进行统一的重传或者非重传操作,基站需要斟酌在多大比例的UE需要重传时,发送重传命令。
此时每个UE的数据重传的位置,如果仍然位于后续数据调度传输单元的与当前被打孔掉的数据的相同资源位置,则重传位置可以是小区专属通知的,如果需要为每个UE的重传指定时频位置,则仍然需要对每个UE的UE专属的重传位置指示。
需要说明的是,基站对UE的指示也可以是UE专属的。
考虑到同样打掉2个OFDM符号对于不同传输量的UE的解调性能影响是不同的,是否需要重传可以对不同的UE是不同的。
可选地,该指示消息能够指示每个UE被占用的资源位置,进一步地,还可以指示每个UE重传的时频位置。
在本实施例中,基站能够决定被低时延业务打孔掉的那些业务的优先级,从而确定是否为UE进行立即重传。例如对于某个UE,如果他的eMBB数据
多次被污染导致其无法正确接收,基站则为UE的被污染数据设立高优先级,可以为其预留资源进行重传。
在本实施例中,在数据调度传输单元内的数据传输结束后,发送一指示消息,指示发送端是否会对被占用的资源处对应的数据进行重传,当指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,用户不需要对当前收到的数据进行HARQ操作,需等待重传的数据到达后再进行HARQ操作,重传的时频资源或格式可以进行进一步指示。当指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的正常数据处理流程处理数据进行操作。
与相关技术相比,本实施例中的发送端能够尽快安排被污染的数据重传,相比接收端启动物理层HARQ,再由发送端安排重传,能够更快地重传数据,改善非低时延用户的体验速率;当接收端不需要对当前调度时间单元的数据启动HARQ时,接收端可以不对当前数据实施译码操作,而是等待发送端重传的数据到达后进行合并后再进行解调译码等操作,能够降低接收端的功率损耗。
参见图6,图中示出了一种数据重传的装置,该装置600包括:
发送模块601,用于在数据调度传输单元内的数据传输结束后,发送一指示消息;
其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示基站或用户调度数据传输单元内调度资源被占用的用户的数据是否会被重传。
在本实施例中,可选地,所述数据调度传输单元是一次数据调度传输的时间单位,可以是一个或多个TTI、子帧、时隙、迷你时隙等,数据传输单元包括但不限于如下结构:
包含至少一个下行传输部分和至少一个上行传输部分,或者
只包含下行传输部分,或者
只包含上行传输部分。
在本实施例中,可选地,所述发送模块进一步用于:
在公共控制信道内以小区专属的方式或者以UE专属的方式发送所述指示消息;或者在UE专属的控制信道发送所述指示消息。
在本实施例中,可选地,所述装置还包括:
第一指示模块,用于在公共控制信道以小区专属或UE专属的方式发送指示消息,可选地,其中数据调度传输单元内的数据传输结束后的公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
在本实施例中,可选地,所述装置还包括:
第二指示模块,用于在UE专属的控制信道以UE专属的方式发送所述指示信息,可选地,其中UE专属的控制信道通过数据调度传输单元内的其他控制信道指示,或者高层信令指示。
在本实施例中,可选地,对于下行的传输,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,所述用户不启动HARQ操作;
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的正常数据处理流程处理数据进行操作。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,还表示用户等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,指示消息还指示重传的时间和/或频域位置和/或重传的形式。
在本实施例中,可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传UE当前数据调度传输单元传输的所有数据或者其(当前用户的所有数据对应的)不同的冗余版本。
参见图7,图中示出了一种数据重传的方法,具体步骤如下:
步骤701、接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
在本实施例中,可选地,若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;或者
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,需要等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
在本实施例中,可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者不同的冗余版本。
参见图8,图中示出了一种数据重传的装置,该装置800包括:
接收模块801,用于接收基站发送的指示信息;
所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或
所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
在本实施例中,可选地,该装置800还包括:
处理模块,用于若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;和/或
若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资
源被占用的用户的数据会被重传时,需要等待基站重传的数据到达后再启动混合自动重传流程,或数据接收后的数据处理流程。
在本实施例中,可选地,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
在本实施例中,可选地,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者不同的冗余版本。
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本公开的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一项或多项实施例中。
在本公开的各种实施例中,应理解,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本公开实施例的实施过程构成任何限定
另外,本文中术语“系统”和“网络”在本文中常可互换使用。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在本申请所提供的实施例中,应理解,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
在本申请所提供的几个实施例中,应该理解到,所揭露方法和设备,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或
直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理包括,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述收发方法的部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述的是本公开的优选实施方式,应当指出对于本技术领域的普通人员来说,在不脱离本公开所述的原理前提下还可以做出若干改进和润饰,这些改进和润饰也在本公开的保护范围内。
Claims (36)
- 一种数据重传的方法,包括:在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
- 根据权利要求1所述的方法,其中,所述数据调度传输单元包括但不限于如下结构:包含至少一个下行传输部分和至少一个上行传输部分,或者只包含下行传输部分,或者只包含上行传输部分。
- 根据权利要求1所述的方法,其中,所述发送一指示消息,包括:以小区专属的方式或者以用户设备(User Equipment,UE)专属的方式发送所述指示消息。
- 根据权利要求3所述的方法,其中,在数据调度传输单元内的数据传输结束后的公共控制信道以小区专属或UE专属的方式发送指示消息。
- 根据权利要求4所述的方法,其中,所述公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
- 根据权利要求3所述的方法,其中,在UE专属的控制信道以UE专属的方式发送所述指示信息。
- 根据权利要求6所述的方法,其中,UE专属的控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过高层信令指示。
- 根据权利要求1所述的方法,其中,对于下行的传输,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,所述用户不启动混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)操作,或 者不启动数据接收后的部分或全部数据处理流程;若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的数据处理流程进行数据处理操作。
- 根据权利要求8所述的方法,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,还表示用户等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
- 根据权利要求1所述的方法,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
- 根据权利要求10所述的方法,其中,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或其不同的冗余版本。
- 一种数据重传的装置,包括:发送模块,用于在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
- 根据权利要求12所述的装置,其中,所述数据调度传输单元包括但不限于如下结构:包含至少一个下行传输部分和至少一个上行传输部分,或者只包含下行传输部分,或者只包含上行传输部分。
- 根据权利要求12所述的装置,其中,所述发送模块进一步用于:以小区专属的方式或者以UE专属的方式发送所述指示消息。
- 根据权利要求12所述的装置,还包括:第一指示模块,用于在数据调度传输单元内的数据传输结束后的公共控 制信道以小区专属或UE专属的方式发送指示消息。
- 根据权利要求15所述的装置,其中,所述公共控制信道的配置信息通过数据调度传输单元内的其他控制信道指示,或者通过系统广播消息指示,或者通过高层信令指示。
- 根据权利要求12所述的装置,还包括:第二指示模块,用于在UE专属的控制信道以UE专属的方式发送所述指示信息。
- 根据权利要求17所述的装置,其中,所述UE专属的控制信道通过数据调度传输单元内的其他控制信道指示,或者通过高层信令指示。
- 根据权利要求12所述的装置,其中,对于下行的传输,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,表示基站将会重传数据调度传输单元内调度资源被占用的用户的数据,所述用户不启动HARQ操作;或者不启动数据接收后的部分或全部数据处理流程;若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传时,表示用户按照预设的数据处理流程进行数据处理操作。
- 根据权利要求19所述的装置,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,还表示用户等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
- 根据权利要求12所述的装置,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
- 根据权利要求21所述的装置,其中,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
- 一种数据重传的方法,包括:接收基站发送的指示信息;所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/ 或所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
- 根据权利要求23所述的方法,其中,若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;或者若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
- 根据权利要求23所述的方法,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
- 根据权利要求23所述的方法,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
- 根据权利要求26所述的方法,其中,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
- 一种数据重传的装置,包括:接收模块,用于接收基站发送的指示信息;所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
- 根据权利要求28所述的装置,还包括:处理模块,用于若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传,不启动HARQ操作;和/或者若所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据不会被重传,按照预设的正常数据处理流程进行操作。
- 根据权利要求28所述的装置,其中,所述指示消息指示数据调度传 输单元内调度资源被占用的用户的数据会被重传时,等待基站重传的数据到达后再启动混合自动重传请求流程,或数据接收后的数据处理流程。
- 根据权利要求30所述的装置,其中,所述指示消息指示数据调度传输单元内调度资源被占用的用户的数据会被重传时,所述指示消息还指示重传的时间和/或频域位置和/或重传的形式。
- 根据权利要求31所述的装置,其中,所述重传的形式包括仅重传被占用的资源处对应的数据,或者重传用户当前数据调度传输单元传输的所有数据或者其不同的冗余版本。
- 一种数据重传的装置,包括:处理器、存储器和收发机,其中:所述处理器用于读取存储器中的程序,执行下列过程:在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传,所述收发机用于接收和发送数据,所述存储器能够存储处理器在执行操作时所使用的数据。
- 一种数据重传的装置,包括:处理器、存储器和收发机,其中:所述处理器用于读取存储器中的程序,执行下列过程:接收基站发送的指示信息;所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传,所述收发机用于接收和发送数据,所述存储器能够存储处理器在执行操作时所使用的数据。
- 一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时,实现下列的用于网络侧的数据传输指示的过程:在数据调度传输单元内的数据传输结束后,发送一指示消息;其中,所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示基站或用户数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
- 一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时,实现下列的用于网络侧的数据传输指示的过程:接收基站发送的指示信息;所述指示消息用于指示数据调度传输单元内调度资源被占用的情况;和/或所述指示消息用于指示数据调度传输单元内调度资源被占用的用户的数据是否会被重传。
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| CN111466127B (zh) * | 2020-03-05 | 2023-09-26 | 北京小米移动软件有限公司 | 增强上行覆盖的处理方法、装置及存储介质 |
| WO2023133484A1 (en) * | 2022-01-07 | 2023-07-13 | Ginkgo Bioworks, Inc. | Skin commensal bacteria engineered to produce anthranilate or derivatives thereof |
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| CN108092750B (zh) | 2020-05-15 |
| CN108092750A (zh) | 2018-05-29 |
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