WO2019095213A1 - 无线通信的方法和终端设备 - Google Patents
无线通信的方法和终端设备 Download PDFInfo
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- WO2019095213A1 WO2019095213A1 PCT/CN2017/111371 CN2017111371W WO2019095213A1 WO 2019095213 A1 WO2019095213 A1 WO 2019095213A1 CN 2017111371 W CN2017111371 W CN 2017111371W WO 2019095213 A1 WO2019095213 A1 WO 2019095213A1
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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
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1848—Time-out mechanisms
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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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
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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 signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present application relates to the field of communications, and more particularly to a method and terminal device for wireless communication.
- the Hybrid Automatic Repeat Request Round Trip Time (HARQ RTT) timer is for each Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request).
- the HARQ process defines that an upstream HARQ RTT timer is maintained for each asynchronous HARQ process.
- the function of the timer is that the terminal device does not need to listen to the physical downlink control channel (PDCCH) for the asynchronous HARQ process within the duration of the timer.
- PDCCH physical downlink control channel
- the start timing of the uplink HARQ RTT timer needs to consider the retransmission of the Physical Uplink Shared Channel (PUSCH) ( Repetition) to meet the requirements of power saving.
- PUSCH Physical Uplink Shared Channel
- the embodiment of the present application provides a method and a terminal device for wireless communication, and the terminal device can flexibly start the HARQ RTT timer, thereby achieving the purpose of power saving.
- an embodiment of the present application provides a method for wireless communication, including:
- the terminal device listens to the downlink control channel PDCCH in the discontinuous reception DRX period, where the PDCCH carries an uplink grant, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting the uplink shared channel PUSCH;
- the terminal device After detecting the PDCCH, the terminal device starts an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment.
- the terminal device after detecting the PDCCH indicating the uplink asynchronous HARQ process, the terminal device starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment, so that the terminal device is Upstream HARQ RTT timer starts The PDCCH is not monitored during the period, and thus, the purpose of power saving is achieved.
- the method further includes:
- the terminal device When performing the nth transmission of the PUSCH, the terminal device receives the termination retransmission message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is greater than or equal to 1. Integer
- the terminal device determines that the first time is the time at which the PUSCH is transmitted for the nth time.
- the terminal device After receiving the termination retransmission message fed back by the network device, the terminal device indicates that the network device has successfully received the PUSCH, and the retransmission may be ended without waiting for the maximum number of retransmissions.
- the terminal device may start an uplink HARQ RTT timer for the asynchronous HARQ process when receiving the terminating retransmission message, so that the terminal device may end monitoring the PDCCH in advance, and further To achieve the purpose of saving electricity.
- the terminating retransmission message is dynamic scheduling information indicated by the PDCCH, or the terminating retransmission message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by the PDCCH.
- the first time is a time when the PUSCH is transmitted for the first time.
- the uplink HARQ RTT timer is started at the time of transmitting the PUSCH for the first time, so that the terminal device does not need to monitor the PDCCH during the startup of the uplink HARQ RTT timer, and further, saves the province.
- the purpose of electricity is not limited to electricity.
- the first transmission PUSCH is the first time in the k times retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1. .
- the first time is a time when the PUSCH is transmitted for the kth time, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- the embodiment of the present application provides a method for wireless communication, including:
- the terminal device determines that the current time has an uplink authorization, and the uplink authorization indication is used to transmit the uplink total
- the terminal device initiates an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment.
- the terminal device after determining that the uplink grant indicating the uplink asynchronous HARQ process exists, the terminal device starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment, so that the terminal device is The PDCCH is not monitored during the uplink HARQ RTT timer, and the power saving is achieved.
- the method further includes:
- the terminal device When performing the nth transmission of the PUSCH, the terminal device receives the termination retransmission message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is greater than or equal to 1. Integer
- the terminal device determines that the first time is the time at which the PUSCH is transmitted for the nth time.
- the terminal device After receiving the termination retransmission message fed back by the network device, the terminal device indicates that the network device has successfully received the PUSCH, and the retransmission may be ended without waiting for the maximum number of retransmissions.
- the terminal device may start an uplink HARQ RTT timer for the asynchronous HARQ process when receiving the terminating retransmission message, so that the terminal device may end monitoring the PDCCH in advance, and further To achieve the purpose of saving electricity.
- the terminating retransmission message is dynamic scheduling information indicated by the PDCCH, or the terminating retransmission message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by the PDCCH.
- the first time is a time when the PUSCH is transmitted for the first time.
- the uplink HARQ RTT timer is started at the time of transmitting the PUSCH for the first time, so that the terminal device does not need to monitor the PDCCH during the startup of the uplink HARQ RTT timer, and further, saves the province.
- the purpose of electricity is not limited to electricity.
- the first transmission PUSCH is the first time in the k times of retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1. .
- the first time is a time when the PUSCH is transmitted for the kth time
- k is a maximum number of retransmissions
- k is a positive integer greater than or equal to 1.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- the embodiment of the present application provides a terminal device, which can execute the module or unit of the method in the first aspect or any optional implementation manner of the first aspect.
- the embodiment of the present application provides a terminal device, which can execute the module or unit of the method in the second aspect or any alternative implementation manner of the second aspect.
- a terminal device comprising a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
- a terminal device comprising a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
- a computer storage medium storing program code for instructing a computer to perform the method of any of the first aspect or the first aspect of the first aspect. instruction.
- a computer storage medium storing program code for instructing a computer to perform the method in any one of the possible implementation manners of the second aspect or the second aspect instruction.
- a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.
- FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
- FIG. 2 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.
- FIG. 3 is a schematic flowchart of another method of wireless communication according to an embodiment of the present application.
- FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 5 is a schematic block diagram of another terminal device according to an embodiment of the present application.
- FIG. 6 is a schematic block diagram of an apparatus for wireless communication provided by an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a system chip according to an embodiment of the present application.
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- Time Division Duplex Time Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- the terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
- Communication device user agent or user device.
- the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- Functional handheld device computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network or terminal in a future evolved public land mobile network (PLMN)
- PLMN public land mobile network
- the present application describes various embodiments in connection with a network device.
- the network device in the embodiment of the present application may be a device for communicating with the terminal device, where the access network device may be an evolved base station (Evolutional NodeB, eNB or eNodeB) in the LTE system, or may be a cloud wireless access network.
- the access network device may be an evolved base station (Evolutional NodeB, eNB or eNodeB) in the LTE system, or may be a cloud wireless access network.
- Evolutional NodeB, eNB or eNodeB evolved base station
- the wireless controller in the (Cloud Radio Access Network, CRAN) scenario, or the access network device may be a relay station, an access point, an in-vehicle device, a wearable device, or a Next Generation Evolutional NodeB (NG-eNB)
- NG-eNB Next Generation Evolutional NodeB
- the embodiment of the present application is not limited to an access network device (for example, gNB) in a 5G network or an access network device in a publicly-developed public land mobile network (PLMN) network.
- PLMN public land mobile network
- FIG. 1 exemplarily shows one network device and two terminal devices.
- the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device. The application embodiment does not limit this.
- the wireless communication system 100 may further include another network entity such as a network controller, a Mobility Management Entity (MME), and an Access and Mobility Management Function (AMF).
- a network controller such as a network controller, a Mobility Management Entity (MME), and an Access and Mobility Management Function (AMF).
- MME Mobility Management Entity
- AMF Access and Mobility Management Function
- the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media.
- the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.).
- various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
- the term "machine-readable medium” may include, but is not limited to, a variety of media capable of storing, containing, and/or carrying instructions and/or data.
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- FIG. 2 is a schematic flow diagram of a method 200 of wireless communication in accordance with an embodiment of the present application.
- the method 200 is optionally applicable to the system shown in FIG. 1, but is not limited thereto.
- the method 200 includes at least some of the following.
- the terminal device listens to the PDCCH in a discontinuous reception (DRX) period, where the PDCCH carries an uplink grant, and the uplink grant indicates an asynchronous HARQ process for transmitting the PUSCH.
- DRX discontinuous reception
- the terminal device may transmit the PUSCH on the asynchronous HARQ process according to the uplink grant.
- the terminal device After the PDCCH is detected, the terminal device starts at the first moment.
- the upstream HARQ RTT timer of the HARQ process is a prefix of the HARQ process.
- the terminal device does not expect to listen to the PDCCH for the asynchronous HARQ process.
- the terminal device when the terminal device transmits the PUSCH by using the asynchronous HARQ process, if the transmission fails, the terminal device needs to retransmit the PUSCH by using the asynchronous HARQ process.
- the asynchronous HARQ process has a maximum number of retransmissions. If the number of retransmissions exceeds the maximum number of retransmissions, the data transmission may be considered to be unsuccessful. At this time, no retransmission is required.
- the maximum number of retransmissions of the asynchronous HARQ process a is k, and the terminal device still fails to transmit the uplink data Q k times through the asynchronous HARQ process a. Then, the terminal device considers that the uplink data Q transmission fails, and does not need to perform retransmission.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- the terminal device may determine the first moment by:
- the terminal device When performing the nth transmission of the PUSCH, the terminal device receives the termination retransmission message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is greater than or equal to 1. Integer
- the terminal device determines that the first time is the time at which the PUSCH is transmitted for the nth time.
- the nth transmission PUSCH refers to the nth retransmission performed after the terminal equipment transmits the PUSCH and continues to retransmit n-1 times.
- the terminating retransmission message is dynamic scheduling information indicated by the network device by using the PDCCH.
- the terminating retransmission message is an acknowledgement (ACK) or a non-acknowledgement (NACK) indicated by the PDCCH.
- ACK acknowledgement
- NACK non-acknowledgement
- the terminal device After receiving the termination retransmission message fed back by the network device, the terminal device indicates that the network device has successfully received the PUSCH, and the retransmission may be ended without waiting for the maximum number of retransmissions.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the first time.
- the first transmission of the PUSCH refers to: the terminal device transmits the PUSCH for the first time.
- retransmission is also performed.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the first time, and it may be understood that the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process at the time of the first transmission of the PUSCH, that is, if there is a subsequent retransmission The PUSCH, the terminal device is also not expected to receive the PDCCH for the asynchronous HARQ process.
- the first transmission PUSCH is the first time in the k times retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the kth time, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the kth transmission PUSCH refers to: the terminal equipment performs the last PUSCH retransmission.
- the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process in a subframe corresponding to the last retransmission PUSCH.
- the terminal device may start an uplink HARQ RTT timer for the asynchronous HARQ process when receiving the terminating retransmission message, so that the terminal device may end monitoring the PDCCH in advance, and further, The purpose of saving electricity.
- the uplink HARQ RTT timer is started at the time of transmitting the PUSCH for the first time, so that the terminal device does not need to monitor the PDCCH during the uplink HARQ RTT timer startup period, thereby achieving the purpose of power saving.
- the uplink HARQ RTT timer is started at the time of the last transmission of the PUSCH, so that reliable transmission of data can be ensured to the greatest extent, and the terminal device is in the startup period of the uplink HARQ RTT timer. There is no need to monitor the PDCCH, and further, the purpose of power saving is achieved.
- FIG. 3 is a schematic flowchart of a method 300 of wireless communication according to an embodiment of the present application.
- the method 300 can optionally be applied to the system shown in Figure 1, but is not limited thereto.
- the method 300 includes at least a portion of the following.
- the terminal device determines that the current moment has an uplink grant, and the uplink grant indicates an asynchronous HARQ process for transmitting the PUSCH.
- the terminal device may transmit the PUSCH on the asynchronous HARQ process according to the uplink grant.
- the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process at a first moment.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- the terminal device may determine the first moment by:
- the terminal device When performing the nth transmission of the PUSCH, the terminal device receives the termination retransmission message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is greater than or equal to 1. Integer
- the terminal device determines that the first time is the time at which the PUSCH is transmitted for the nth time.
- the nth transmission PUSCH refers to the nth retransmission performed after the terminal equipment transmits the PUSCH and continues to retransmit n-1 times.
- the terminating retransmission message is dynamic scheduling information indicated by the network device by using the PDCCH.
- the terminating retransmission message is an acknowledgement (ACK) or a non-acknowledgement (NACK) indicated by the PDCCH.
- ACK acknowledgement
- NACK non-acknowledgement
- the terminal device After receiving the termination retransmission message fed back by the network device, the terminal device indicates that the network device has successfully received the PUSCH, and the retransmission may be ended without waiting for the maximum number of retransmissions.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the first time.
- the first transmission of the PUSCH refers to: the terminal device transmits the PUSCH for the first time.
- retransmission is also performed.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the first time, and it may be understood that the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process at the time of the first transmission of the PUSCH, that is, if there is a subsequent retransmission The PUSCH, the terminal device is also not expected to receive the PDCCH for the asynchronous HARQ process.
- the first transmission PUSCH is the first time in the k times retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the terminal device determines that the first time is the time when the PUSCH is transmitted for the kth time, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the kth transmission PUSCH refers to: the terminal equipment performs the last PUSCH retransmission.
- the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process in a subframe corresponding to the last retransmission PUSCH.
- the terminal device may start an uplink HARQ RTT timer for the asynchronous HARQ process when receiving the terminating retransmission message, so that the terminal device may end monitoring the PDCCH in advance, and further, The purpose of saving electricity.
- the uplink HARQ RTT timer is started at the time of transmitting the PUSCH for the first time, so that the terminal device does not need to monitor the PDCCH during the uplink HARQ RTT timer startup period, thereby achieving the purpose of power saving.
- the uplink HARQ RTT timer is started at the time of the last transmission of the PUSCH, so that reliable transmission of data can be ensured to the greatest extent, and the terminal device is in the startup period of the uplink HARQ RTT timer. There is no need to monitor the PDCCH, and further, the purpose of power saving is achieved.
- FIG. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 4, the terminal device 400 includes:
- the processing unit 410 is configured to listen to the downlink control channel PDCCH in the discontinuous reception DRX period, where the PDCCH carries an uplink grant, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting the uplink shared channel PUSCH;
- the processing unit 410 After the processing unit 410 detects the PDCCH, the processing unit 410 initiates an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first time.
- the terminal device 400 further includes:
- the receiving unit 420 is configured to receive a termination retransmission message fed back by the network device when the nth transmission of the PUSCH is performed, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is greater than or equal to a positive integer of 1;
- the processing unit 410 is further configured to determine that the first time is the time when the PUSCH is transmitted for the nth time.
- the terminating retransmission message is dynamic scheduling information indicated by the PDCCH, or the terminating retransmission message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by the PDCCH.
- the first moment is a moment when the PUSCH is transmitted for the first time.
- the first transmission PUSCH is the first time in the k times retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the first time is a time when the PUSCH is transmitted for the kth time, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- FIG. 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes:
- the processing unit 510 is configured to determine that the current time has an uplink grant, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting the uplink shared channel PUSCH;
- the processing unit 510 is further configured to start an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment.
- the terminal device 500 further includes:
- the receiving unit 520 is configured to receive a termination retransmission message fed back by the network device when the nth transmission of the PUSCH is performed, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is greater than or equal to a positive integer of 1;
- the processing unit 510 is further configured to determine that the first time is the time when the PUSCH is transmitted for the nth time.
- the terminating retransmission message is dynamic scheduling information indicated by the PDCCH, or the terminating retransmission message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by the PDCCH.
- the first moment is a moment when the PUSCH is transmitted for the first time.
- the first transmission PUSCH is the first time in the k times retransmission PUSCH, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the first time is a time when the PUSCH is transmitted for the kth time, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.
- the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.
- the maximum number of retransmissions is pre-configured for the asynchronous HARQ process.
- FIG. 6 is a schematic block diagram of a device 600 for wireless communication provided by an embodiment of the present application.
- the device 600 includes:
- a memory 610 configured to store a program, where the program includes code
- the transceiver 620 is configured to communicate with other devices;
- the processor 630 is configured to execute program code in the memory 610.
- the transceiver 620 is configured to perform specific signal transceiving under the driving of the processor 630.
- the processor 630 can also implement various operations performed by the terminal device in the method 200 in FIG. 2 and the method 300 in FIG. 3, and details are not described herein for brevity.
- the device 600 can be a terminal device, such as a mobile phone.
- the processor 630 may be a central processing unit (CPU), and the processor 630 may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and more.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the memory 610 can include read only memory and random access memory and provides instructions and data to the processor 630. A portion of the memory 610 may also include a non-volatile random access memory. For example, the memory 610 can also store information of the device type.
- the transceiver 620 can be used to implement signal transmission and reception functions, such as frequency modulation and demodulation functions or upconversion and down conversion functions.
- the device 600 for wireless communication can be a chip or chipset.
- the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor 630 reads the information in the memory and completes the steps of the above method in combination with the hardware thereof. To avoid repetition, it will not be described in detail here.
- FIG. 7 is a schematic structural diagram of a system chip 700 according to an embodiment of the present application.
- the system chip 700 of FIG. 7 includes an input interface 701, an output interface 702, a processor 703, and a memory 704.
- the memories 703 are used to execute the code in the memory 704.
- the processor 703 implements a method performed by the terminal device in the method embodiment. For the sake of brevity, it will not be repeated here.
- the computer program product includes one or more computer instructions.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
- the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
- the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
- the implementation process constitutes any limitation.
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Abstract
Description
Claims (32)
- 一种无线通信的方法,其特征在于,包括:终端设备在非连续接收DRX时段内侦听下行控制信道PDCCH,所述PDCCH携带上行授权,所述上行授权指示用于传输上行共享信道PUSCH的异步混合自动重传请求HARQ进程;在侦听到所述PDCCH之后,所述终端设备在第一时刻启动针对所述异步HARQ进程的上行HARQ循环时间RTT定时器。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:在进行第n次传输PUSCH之时,所述终端设备接收到网络设备反馈的终止重传消息,n为小于或者等于k的正整数,k为最大重传次数,且k为大于或者等于1的正整数;所述终端设备确定所述第一时刻为第n次传输PUSCH的时刻。
- 根据权利要求2所述的方法,其特征在于,所述终止重传消息为通过PDCCH指示的动态调度信息,或者,所述终止重传消息为通过PDCCH指示的确认帧ACK或者非确认帧NACK。
- 根据权利要求1所述的方法,其特征在于,所述第一时刻为第一次传输PUSCH的时刻。
- 根据权利要求4所述的方法,其特征在于,所述第一次传输PUSCH为k次重传PUSCH中的第一次,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求1所述的方法,其特征在于,所述第一时刻为第k次传输PUSCH的时刻,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求2、3、5、6中任一项所述的方法,其特征在于,所述最大重传次数为网络设备针对所述异步HARQ进程配置的。
- 根据权利要求2、3、5、6中任一项所述的方法,其特征在于,所述最大重传次数为针对所述异步HARQ进程预配置的。
- 一种无线通信的方法,其特征在于,包括:终端设备确定当前时刻具有上行授权,所述上行授权指示用于传输上行共享信道PUSCH的异步混合自动重传请求HARQ进程;所述终端设备在第一时刻启动针对所述异步HARQ进程的上行HARQ循环时间RTT定时器。
- 根据权利要求9所述的方法,其特征在于,所述方法还包括:在进行第n次传输PUSCH之时,所述终端设备接收到网络设备反馈的终止重传消息,n为小于或者等于k的正整数,k为最大重传次数,且k为大于或者等于1的正整数;所述终端设备确定所述第一时刻为第n次传输PUSCH的时刻。
- 根据权利要求10所述的方法,其特征在于,所述终止重传消息为通过PDCCH指示的动态调度信息,或者,所述终止重传消息为通过PDCCH指示的确认帧ACK或者非确认帧NACK。
- 根据权利要求9所述的方法,其特征在于,所述第一时刻为第一次传输PUSCH的时刻。
- 根据权利要求12所述的方法,其特征在于,所述第一次传输PUSCH为k次重传PUSCH中的第一次,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求9所述的方法,其特征在于,所述第一时刻为第k次传输PUSCH的时刻,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求10、11、13、14中任一项所述的方法,其特征在于,所述最大重传次数为网络设备针对所述异步HARQ进程配置的。
- 根据权利要求10、11、13、14中任一项所述的方法,其特征在于,所述最大重传次数为针对所述异步HARQ进程预配置的。
- 一种终端设备,其特征在于,包括:处理单元,用于在非连续接收DRX时段内侦听下行控制信道PDCCH,所述PDCCH携带上行授权,所述上行授权指示用于传输上行共享信道PUSCH的异步混合自动重传请求HARQ进程;在所述处理单元侦听到所述PDCCH之后,所述处理单元在第一时刻启动针对所述异步HARQ进程的上行HARQ循环时间RTT定时器。
- 根据权利要求17所述的终端设备,其特征在于,所述终端设备还包括:接收单元,用于在进行第n次传输PUSCH之时,接收到网络设备反馈的终止重传消息,n为小于或者等于k的正整数,k为最大重传次数,且k为大于或者等于1的正整数;所述处理单元,还用于确定所述第一时刻为第n次传输PUSCH的时刻。
- 根据权利要求18所述的终端设备,其特征在于,所述终止重传消息为通过PDCCH指示的动态调度信息,或者,所述终止重传消息为通过PDCCH指示的确认帧ACK或者非确认帧NACK。
- 根据权利要求17所述的终端设备,其特征在于,所述第一时刻为第一次传输PUSCH的时刻。
- 根据权利要求20所述的终端设备,其特征在于,所述第一次传输PUSCH为k次重传PUSCH中的第一次,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求17所述的终端设备,其特征在于,所述第一时刻为第k次传输PUSCH的时刻,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求18、19、21、22中任一项所述的终端设备,其特征在于,所述最大重传次数为网络设备针对所述异步HARQ进程配置的。
- 根据权利要求18、19、21、22中任一项所述的终端设备,其特征在于,所述最大重传次数为针对所述异步HARQ进程预配置的。
- 一种终端设备,其特征在于,包括:处理单元,用于确定当前时刻具有上行授权,所述上行授权指示用于传输上行共享信道PUSCH的异步混合自动重传请求HARQ进程;所述处理单元,还用于在第一时刻启动针对所述异步HARQ进程的上行HARQ循环时间RTT定时器。
- 根据权利要求25所述的终端设备,其特征在于,所述终端设备还包括:接收单元,用于在进行第n次传输PUSCH之时,接收到网络设备反馈的终止重传消息,n为小于或者等于k的正整数,k为最大重传次数,且k为大于或者等于1的正整数;所述处理单元,还用于确定所述第一时刻为第n次传输PUSCH的时刻。
- 根据权利要求26所述的终端设备,其特征在于,所述终止重传消息为通过PDCCH指示的动态调度信息,或者,所述终止重传消息为通过PDCCH指示的确认帧ACK或者非确认帧NACK。
- 根据权利要求25所述的终端设备,其特征在于,所述第一时刻为第一次传输PUSCH的时刻。
- 根据权利要求28所述的终端设备,其特征在于,所述第一次传输PUSCH为k次重传PUSCH中的第一次,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求25所述的终端设备,其特征在于,所述第一时刻为第k次传输PUSCH的时刻,k为最大重传次数,且k为大于或者等于1的正整数。
- 根据权利要求26、27、29、30中任一项所述的终端设备,其特征在于,所述最大重传次数为网络设备针对所述异步HARQ进程配置的。
- 根据权利要求26、27、29、30中任一项所述的终端设备,其特征在于,所述最大重传次数为针对所述异步HARQ进程预配置的。
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RU2752239C1 (ru) | 2021-07-23 |
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EP3731578B1 (en) | 2022-06-22 |
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US20200280973A1 (en) | 2020-09-03 |
TW201924473A (zh) | 2019-06-16 |
KR20200084039A (ko) | 2020-07-09 |
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