Method, apparatus, and readable storage medium for transmitting a downlink channel

Abstract

This disclosure provides a method, apparatus, and readable storage medium for transmitting a downlink channel. The method transmits a physical downlink control channel (PDCCH) to user equipment within a time domain interval where a first period of DTX and the operating period of a first timer overlap, the first timer being a timer for data retransmission in a connection mode discontinuous receive (C-DRX) cycle set in the user equipment. In the method of this disclosure, when the first period of network device DTX and the operating period of the first timer in the user equipment C-DRX cycle overlap, the network device still transmits the PDCCH within the overlapping time domain interval, and the user equipment monitors the PDCCH within the time domain interval, thereby ensuring that data transmission scheduling can still be obtained within the time domain interval, and ensuring data transmission performance and low transmission delay.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technologies, and particularly to a method, an apparatus, and a readable storage medium for transmitting a downlink channel.

Background Art

[0002] Network energy saving is one of the topics in the Release 18 (R18) of the 3rd Generation Partnership Project (3GPP). The network energy saving project aims to research technologies for reducing the power consumption of network devices. As a possible network energy saving method, the discontinuous transmission (DTX) mechanism of the cell base station can be mentioned. When the base station sets the cell DTX, the base station does not transmit some or all of the downlink information in the cell within a specific period in the cell DTX, thereby achieving network energy saving.

[0003] In R15, the connected discontinuous reception (C-DRX) mechanism of the user equipment (UE) is defined. When the C-DRX period of the UE is set, in order to achieve energy saving of the UE, the UE does not need to monitor the physical downlink control channel (PDCCH) within a specific period in the C-DRX period.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure provides a method, an apparatus, and a readable storage medium for transmitting a downlink channel.

Means for Solving the Problems

[0005] According to the first aspect, this disclosure is , Ne A method is provided for transmitting a downlink channel performed by a network device, wherein the network device, the method, Discontinuous transmission (DTX) duration set by the aforementioned network device If there is a time domain interval in which the first period and the operating period of the first timer overlap, the step includes transmitting a physical downlink control channel (PDCCH) to the user equipment within the time domain interval. Here, the first timer is a timer for data retransmission during the connection mode discontinuous reception (C-DRX) period set in the user equipment.

[0006] In some possible embodiments, the DTX Duration The first period is The aforementioned DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and The aforementioned DTX Duration The period during which the network device is inactive, The aforementioned DTX Duration The period during which the aforementioned network device is off, The aforementioned DTX Duration This is one of the following: the period during which the network device is in an energy-saving state, or

[0007] In some possible embodiments, the network device Perform single-carrier data scheduling. In this case, the step of transmitting the physical downlink control channel (PDCCH) to the user equipment within the time domain interval is: The step of transmitting the PDCCH to the user equipment on a first carrier within the time domain interval, the step of the first carrier being a carrier in which a data transmission failure occurs.

[0008] In some possible embodiments, the network device cross-carrier scheduling GuIf configured, the step of transmitting the physical downlink control channel (PDCCH) to the user equipment within the time domain interval is: Within the aforementioned time domain interval, the second carrier transmits the PDCCH to the user equipment, wherein the second carrier includes the same or different steps as the first carrier in which the data transmission failure occurs.

[0009] In some possible embodiments, the second carrier is the network device Cell DTX is not set by It's a career.

[0010] In some possible embodiments, the second carrier is the C-DRX period of the user equipment. is set It's a career.

[0011] In some possible embodiments, the method is C-DRX period of the aforementioned user equipment is set The first carrier group and the aforementioned network device Cell DTX is set by A step of determining the second carrier based on the second carrier group, further comprising the step of determining that the second carrier is a carrier in the third carrier group, and the carriers in the third carrier group belong to the first carrier group but do not belong to the common set of the first carrier group and the second carrier group.

[0012] In some possible embodiments, if the third carrier group is an empty set, the second carrier is the same as the first carrier.

[0013] In some possible embodiments, the method is Within the aforementioned time domain interval, the cell DTX is set The second carrier group transmits the PDCCH. It is forbidden to do so. Includes further steps.

[0014] In some possible embodiments, the first timer is A retransmission timer corresponding to a downlink hybrid automatic repeat request (HARQ) process, and a retransmission timer corresponding to an uplink HARQ process, and includes at least one of them.

[0015] In some possible embodiments, the PDCCH includes at least the PDCCH for carrying DCI for scheduling data transmission.

[0016] According to a second aspect, the present disclosure , Ne provides a method for not transmitting a downlink channel, which is executed by a network device, and the method includes when cross-carrier scheduling is set and the third carrier group is an empty set, Discontinuous transmission (DTX) duration set by the aforementioned network device not transmitting the PDCCH within a time region interval where a first period and an operating period of a first timer overlap, where carriers of the third carrier group belong to a C-DRX period of user equipment is set and belong to a first carrier group, but do not belong to a common set of the first carrier group and the network device Cell DTX is set by and a second carrier group.

[0017] In some possible embodiments, the first timer includes a retransmission timer corresponding to a downlink hybrid automatic repeat request (HARQ) process, and a retransmission timer corresponding to an uplink HARQ process, and includes at least one of them.

[0018] In some possible embodiments, the PDCCH includes at least the PDCCH for carrying DCI for scheduling data transmission.

[0019] According to a third aspect, the present disclosure provides a method for receiving a downlink channel, which is executed by user equipment, and the method includes DTX set by a network device DurationIf there is a time domain interval in which the first period and the operating period of the first timer overlap, the step includes receiving a PDCCH transmitted from a network device within the time domain interval. Here, the first timer is a timer for data retransmission during the C-DRX period set in the user equipment.

[0020] In some possible embodiments, the DTX Duration The first period is The aforementioned DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and The aforementioned DTX Duration The period during which the network device is inactive, The aforementioned DTX Duration The period during which the aforementioned network device is off, The aforementioned DTX Duration This is one of the following: the period during which the network device is in an energy-saving state, or

[0021] In some possible embodiments, the network device Perform single-carrier data scheduling. In this case, the step of receiving a PDCCH transmitted from a network device within the time domain interval is: The step of receiving the PDCCH transmitted from the network device within the time domain interval on a first carrier, the first carrier being a carrier in which a data transmission failure occurs.

[0022] In some possible embodiments, if the network device is configured for cross-carrier scheduling, the step of receiving a PDCCH transmitted from the network device within the time domain interval is: Within the aforementioned time domain interval, the second carrier receives the PDCCH transmitted from the network device, wherein the second carrier includes the same or different steps as the first carrier in which the data transmission failure occurred.

[0023] In some possible embodiments, the second carrier is the network device Cell DTX is not set by It's a career.

[0024] In some possible embodiments, the second carrier is the C-DRX period of the user equipment. is set It's a career.

[0025] In some possible embodiments, the method is C-DRX period of the aforementioned user equipment is set The first carrier group and the aforementioned network device Cell DTX is set by A step of determining the second carrier based on the second carrier group, further comprising the step of determining that the second carrier is a carrier in the third carrier group, and the carriers in the third carrier group belong to the first carrier group but do not belong to the common set of the first carrier group and the second carrier group.

[0026] In some possible embodiments, if the third carrier group is an empty set, the second carrier is the same as the first carrier.

[0027] In some possible embodiments, the method is Within the aforementioned time domain interval, the cell DTX is set The second carrier group receives the aforementioned PDCCH. Prohibit doing so Includes further steps.

[0028] In some possible embodiments, the first timer is A retransmission timer for the downlink HARQ process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0029] In some possible embodiments, the PDCCH includes at least a PDCCH for carrying a DCI that schedules data transmissions.

[0030] According to a fourth aspect, the Disclosure provides a method for not receiving a downlink channel performed by user equipment, the method is If the network device is configured for cross-carrier scheduling and the third carrier group is empty, the DTX set by the network device Duration Within a time domain interval in which the first period and the operating period of the first timer overlap, the step includes not receiving the PDCCH, Here, the carrier of the third carrier group is the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0031] In some possible embodiments, the first timer is A retransmission timer for the downlink HARQ process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0032] In some possible embodiments, the PDCCH includes at least a PDCCH for carrying a DCI that schedules data transmissions.

[0033] According to the fifth aspect, the Disclosure provides a communication device used to perform steps performed by a network device in either the first aspect or any one possible design of the first aspect. The network device can implement each of the functions in each of the above methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0034] When the apparatus shown in the fifth embodiment is implemented via a software module, the apparatus may include a transceiver module, which may be used to support communication by a communication device.

[0035] When performing the steps described in the first embodiment above, the network device performs discontinuous transmission (DTX) Duration The DTX Duration If there is a time domain interval in which the first period and the operating period of the first timer overlap, the system is configured to transmit the physical downlink control channel (PDCCH) to the user equipment within the time domain interval. Here, the first timer is a timer for data retransmission during the connection mode discontinuous reception (C-DRX) period set in the user equipment.

[0036] According to the sixth aspect, the Disclosure provides a communication device which may be used to perform steps performed by a network device in either the second aspect or any one of the possible designs of the second aspect. The network device can implement each of the functions in each of the above methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0037] When the apparatus shown in the sixth embodiment is implemented via a software module, the apparatus may include a transceiver module, which may be used to support communication by a communication device.

[0038] When performing the steps described in the second embodiment above, the network device performs discontinuous transmission (DTX) Duration The DTX module is configured such that if cross-carrier scheduling is set and the third carrier group is an empty set, Duration The PDCCH is configured not to transmit within the time domain interval in which the first period and the operating period of the first timer overlap. Here, the carrier of the third carrier group is the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0039] According to the seventh aspect, the disclosure provides a device for receiving a downlink channel, which may be used to perform steps performed by user equipment in either the third aspect or any one of the possible designs of the third aspect. The user equipment can implement each of the functions in each of the above methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0040] When the apparatus shown in the seventh embodiment is implemented via a software module, the apparatus may include a transceiver module, which may be used to support communication by a communication device.

[0041] When performing the steps described in the third aspect above, the transmit / receive module is configured by the network device. Duration If there is a time domain interval in which the first period and the operating period of the first timer overlap, the system is configured to receive PDCCH transmitted from the network device within the time domain interval. Here, the first timer is a timer for data retransmission during the C-DRX period set in the user equipment.

[0042] According to the eighth aspect, the disclosure provides a device that does not receive a downlink channel, which may be used to perform steps performed by user equipment in either the fourth aspect or any one of the possible designs of the fourth aspect. The user equipment can implement each of the functions in each of the above methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0043] When the apparatus shown in the eighth aspect is implemented via a software module, the apparatus may include a transceiver module, which may be used to support communication by a communication device.

[0044] When performing the steps described in the fourth aspect above, the transmitting and receiving module, if the network device has cross-carrier scheduling set and the third carrier group is an empty set, the DTX set by the network device Duration The PDCCH is configured not to be received within the time domain interval in which the first period and the operating period of the first timer overlap. Here, the carrier of the third carrier group is the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0045] According to the ninth aspect, the disclosure provides a network device including a processor and memory, the memory being for storing a computer program, and the processor being for executing the computer program to realize one of the possible designs of the first or second aspect.

[0046] According to the tenth aspect, the disclosure provides user equipment including a processor and memory, wherein the memory is for storing a computer program, and the processor is for executing the computer program to realize any one of the possible designs of the third or fourth aspect.

[0047] According to the eleventh aspect, the Disclosure provides a computer-readable storage medium in which instructions (also called computer programs, or programs) are stored, and when these are called and executed by a computer, the computer executes one of the possible designs of the first or second aspect described above. According to the twelfth aspect, the Disclosure provides a computer-readable storage medium in which instructions (also called computer programs, or programs) are stored, and when these are called and executed by a computer, the computer executes one of the possible designs of the third or fourth aspect described above.

[0048] Please note that the above general explanation and the following detailed explanation are illustrative and explanatory, and do not limit this work. [Brief explanation of the drawing]

[0049] The drawings described herein are for further understanding of the embodiments of the Disclosure and constitute part of the Disclosure. The exemplary embodiments and descriptions thereof are for illustrative purposes only and do not unfairly limit the embodiments of the Disclosure. The drawings here are incorporated into the specification and constitute part of this specification, illustrating embodiments consistent with the embodiments of this disclosure and are used together with the specification to illustrate the principles of the embodiments of this disclosure. [Figure 1] This is a schematic diagram of a wireless communication system architecture provided by the embodiments of this disclosure. [Figure 2] This is an interactive flowchart illustrating a method for transmitting a downlink channel as shown in one exemplary embodiment. [Figure 3] This is a flowchart illustrating a method for transmitting a downlink channel as shown in one exemplary embodiment. [Figure 4] This is a flowchart illustrating a method for transmitting a downlink channel, as shown in another exemplary embodiment. [Figure 5]This is a flowchart illustrating a method for transmitting a downlink channel, as shown in another exemplary embodiment. [Figure 6] This is a flowchart illustrating a method for transmitting a downlink channel, as shown in another exemplary embodiment. [Figure 7] This is a flowchart illustrating a method for receiving a downlink channel, as shown in one exemplary embodiment. [Figure 8] This is a block diagram of a communication device shown in one exemplary embodiment. [Figure 9] This is a block diagram of a network device shown in one exemplary embodiment. [Figure 10] This is a block diagram of a communication device shown in one exemplary embodiment. [Figure 11] This is a block diagram of user equipment shown in one exemplary embodiment. [Modes for carrying out the invention]

[0050] The embodiments of this disclosure will be further described below in conjunction with the drawings and specific embodiments.

[0051] Herein, exemplary embodiments are described, and these examples are shown in the drawings. Where the following description relates to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure detailed in the appended claims.

[0052] The terms used in the embodiments of this disclosure are intended to describe specific embodiments and are not intended to limit the embodiments of this disclosure. Unless otherwise clearly indicated in the context, the singular forms “one kind” and “the” used in the embodiments of this disclosure and the appended claims are intended to include the plural forms. The terms “and / or” as used herein refer to and include any or all possible combinations of one or more related items listed.

[0053] In the embodiments of this disclosure, various types of information may be described using terms such as first, second, third, etc., but this information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another. For example, as long as it does not deviate from the scope of the embodiments of this disclosure, first information may be called second information, and similarly, second information may be called first information. Depending on the context, the term “case” as used herein may be understood as “when…” or “on the occasion of…” or “in response to a decision.”

[0054] The embodiments of this disclosure are described below in detail, and examples of these embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements from beginning to end. The embodiments described below with reference to the drawings are illustrative and are intended to illustrate this disclosure and should not be understood as limiting this disclosure.

[0055] As shown in Figure 1, the method of transmitting a downlink channel provided by the embodiments of the present disclosure is applicable to a wireless communication system 100, which may include a network device 101 and user equipment 102, where the user equipment 102 is configured to support carrier aggregation and can be connected to multiple carrier units of the network device 101, including one primary carrier unit and one or more secondary carrier units.

[0056] Furthermore, the above wireless communication system 100 is applicable to both low-frequency and high-frequency scenarios. The applicable scenarios for the wireless communication system 100 include, but are not limited to, long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, worldwide interoperability for microwave access (WiMAX) communication systems, cloud radio access network (CRAN) systems, future 5th-generation (5G) systems, new radio (NR) communication systems, or future evolved public land mobile network (PLMN) systems.

[0057] The user equipment 102 described above may be a terminal, access terminal, terminal unit, terminal station, mobile station (MS), remote station, remote terminal, mobile terminal, wireless communication device, terminal agent, or terminal device. The user equipment 102 may have wireless transmission and reception functions and can communicate (e.g., wirelessly) with one or more network devices of one or more communication systems and receive network services provided by the network devices, where the network devices may include, but are not limited to, the network device 101 shown in the drawings.

[0058] Here, the user equipment 102 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) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future advanced PLMN network.

[0059] The network device 101 may be an access network device (or access network point). Here, an access network device refers to a device that provides network access functionality, such as a radio access network (RAN) base station. Specifically, the network device 101 may include a base station (BS), or a radio resource management device for controlling a base station or base station. The network device 101 may also include a relay station (relay device), an access point, and a base station in a future 5G network, a base station or NR base station in a future advanced PLMN network, etc. The network device 101 may be a wearable device or an in-vehicle device. The network device 101 may be a communication chip equipped with a communication module.

[0060] For example, the network device 101 includes, but is not limited to, next-generation base stations (gnodeB, gNB) in 5G, evolved node B (eNB) in LTE systems, radio network controllers (RNC), node B (NB) in WCDMA systems, radio controllers in CRAN systems, base station controllers (BSC), base transceiver stations (BTS) in GSM or CDMA systems, home base stations (e.g., home evolved nodeB, or home node B, HNB), baseband units (BBU), transmitting and receiving points (TRP), transmitting points (TP), or mobile switching centers.

[0061] A portion of the C-DRX cycle of user equipment 102 needs to be an active period. The active period of user equipment 102 may overlap with the period when network device 101 does not transmit downlink channels in DTX.

[0062] The embodiments of this disclosure provide a method for transmitting a downlink channel. Referring to Figure 2, the method for transmitting a downlink channel shown in the exemplary embodiment of Figure 2 includes steps S201 to S202, as shown in Figure 2, and is specifically as follows:

[0063] In step S201, DTX DurationIf there is an overlapping time domain interval between the first time period and the operating period of the first timer, the network device 101 transmits a Physical Downlink Control Channel (PDCCH) to the user equipment 102 within the overlapping time domain interval.

[0064] In some possible embodiments, the network device 101 performs discontinuous transmission (DTX). Duration It is set to.

[0065] In some possible embodiments, DTX Duration The first period is DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and DTX Duration The period during which the network device 101 is inactive, DTX Duration The period during which the network device is turned off, DTX Duration This is either the period during which the network device is in a power-saving state, or one of the following:

[0066] In some embodiments, the period during which at least some downlink information is not transmitted in the cell DTX can be understood as an inactive period of the network device 101, and the period during which downlink information is successfully transmitted can be understood as an active period of the network device 101.

[0067] Furthermore, the DTX of the network device 101 may be set on a carrier (also called a cell) basis, for example, the corresponding DTX for one or more carriers setting Therefore, it may be called cell DTX.

[0068] In one example, the cell DTX of network device 101 is periodic. For example, one DTX period includes a first period and a second period, the first period being a period during which at least some of the downlink information set in the DTX period is not transmitted, and may be called the DTX-off period or the period during which the network device is off. For example, network device 101 may not transmit PDCCH during the first period in order to achieve energy saving. The first period may be called the period during which the network device is in an energy-saving state, and the second period being a period during which the downlink information set in the DTX period is transmitted normally, and may be called the DTX-on period or the period during which the network device is on. For example, network device 101 may transmit PDCCH normally during the second period according to scheduling needs. The second period may be understood as a period during which the network device is in a normal operating state or as a period during which it is in a non-energy-saving state.

[0069] In another example, the cell DTX of network device 101 is not periodic. For example, network device 101 dynamically indicates a first period of cell DTX, which may be understood as a DTX-off period, or an off period for network device 101, or a period during which network device 101 is in an energy-saving state.

[0070] Here, the network device 101 can dynamically specify the start offset and duration corresponding to the first period of the DTX by transmitting DCI or Medium Access Control Control Element (MAC CE) signaling.

[0071] In some possible embodiments, the operating period of the first timer refers to the period from when the first timer is started until when the first timer is terminated (i.e., times out).

[0072] In some possible embodiments, the time domain interval formed by the overlap of the first period and the operating period of the first timer may include one or more slots, or the time domain interval may include several milliseconds (ms).

[0073] In some possible embodiments, the period during which the user equipment 102 does not monitor certain downlink information, such as PDCCH, within the C-DRX cycle is the non-active period of the C-DRX, and the period during which the user equipment 102 successfully monitors downlink information, such as PDCCH, is the active period of the C-DRX.

[0074] In one example, a C-DRX cycle may include a third period called the off-duration and a fourth period called the on-duration, where the user equipment 102 is in the active period during the on-duration.

[0075] In this example, the network device 101 may have time-domain parameters set for the C-DRX, such as at least one of the following parameters: the C-DRX period, the length of the C-DRX off period, and the length of the C-DRX on period. For the C-DRX period, a long cycle may be set, or multiple short cycles may be embedded within the long cycle. If both long-period and short-period C-DRX are set simultaneously, the user equipment 102 monitors downlink information according to the long-period C-DRX after the short-period C-DRX is activated and the short-period timer (drx-ShortCycleTimer) times out.

[0076] In some possible embodiments, the user equipment 102 is active during the following timer operating period, i.e., it needs to monitor the downlink channel (e.g., monitor the PDCCH) during the following timer operating period. The operating period of the timer (drx-onDurationTimer) corresponding to the ON period, The operating period of the inactive timer (drx-InactivityTimer), The operating period of the retransmission timer (drx-RetransmissionTimerDL) corresponding to the Downlink Hybrid Automatic Repeater Quest (HARQ) process, The operating period of the retransmission timer (drx-RetransmissionTimerUL) corresponding to the uplink HARQ process.

[0077] Each time the ON period is reached, a timer is started, and when the timer ends, it indicates that the ON period has ended.

[0078] Here, the timer drx-InactivityTimer is started whenever the user equipment 102 receives Downlink Control Information (DCI) that schedules new transmission data for the uplink or downlink, and is used to indicate the duration after the new transmission data has been received.

[0079] Here, the timer drx-RetransmissionTimerDL is used for downlink HARQ processes other than broadcast processes and is used to indicate the maximum duration between receiving data from that process and receiving a downlink retransmission from that process.

[0080] Here, the timer drx-RetransmissionTimerUL is used for the uplink HARQ process and is used to indicate the maximum duration from the time data is received for that process until uplink data is received to retransmit that process uplink.

[0081] Note that different HARQ processes have corresponding identifiers (HARQ IDs). Each DL HARQ process has a corresponding drx-HARQ-RTT-TimerDL timer, and this drx-HARQ-RTT-TimerDL timer does not terminate, and the corresponding HARQ process is not used for retransmission.

[0082] For example, if the drx-HARQ-RTT-TimerDL timer corresponding to a DL HARQ process has finished and user equipment 102 has fed back a NACK, it indicates that network device 101 needs to retransmit data. At this time, the timer drx-RetransmissionTimerDL is started, and user equipment 102 needs to monitor the retransmitted data DCI corresponding to the DL HARQ process within the drx-RetransmissionTimerDL operating period, thereby ensuring that data that was not received properly is retransmitted in a timely manner and that new transmission data DCI of other DL HARQ processes can be monitored.

[0083] As another example, when the drx-HARQ-RTT-TimerUL timer terminates, user equipment 102 activates drx-RetransmissionTimerUL to monitor the PDCCH during the operating period of drx-RetransmissionTimerUL and obtain possible uplink data retransmission scheduling, thereby ensuring that data that was not received successfully can be retransmitted in a timely manner. Here, user equipment 102 monitors the PDCCH during the operating period of drx-RetransmissionTimerUL, and if it receives a DCI that requires data retransmission, user equipment 102 retransmits the data; if it receives a new transmission data DCI, user equipment 102 does not need to retransmit the data.

[0084] In some possible embodiments, the first timer is a timer for data retransmission within the C-DRX period set in the user equipment 102.

[0085] In some possible embodiments, the first timer is A retransmission timer (drx-RetransmissionTimerDL) that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, It includes at least one of the following: a retransmission timer (drx-RetransmissionTimerUL) corresponding to the uplink HARQ process.

[0086] In some possible embodiments, the network device 101 may set a C-DRX period applicable to one or more carriers, for example, the user equipment 102 may be in a C-DRX period on one or more carriers.

[0087] In some possible embodiments, for the network device 101 to be DTX, the network device 101 needs to be DTX on one or more carriers.

[0088] In one example, when user equipment 102 is in the C-DRX cycle on one or more carriers, and network device 101 is in the first period of cell DTX, the active period corresponding to user equipment 102 and the first period may overlap in the time domain.

[0089] In this example, within the overlapping time domain intervals, the network device 101 still transmits PDCCH, thereby avoiding any impact on data transmission due to the network device 101 not transmitting DCIs that schedule data transmission during the first period in a timely manner, and thus avoiding an increase in the overall delay of data transmission due to, for example, not transmitting DCIs in a timely manner.

[0090] In some possible embodiments, the overlap between the first period and the operating period of the first timer may be such that a portion of the operating period of the first timer overlaps with the first period, in which case the overlapping time domain interval includes a portion of the operating period of the first timer.

[0091] In some possible embodiments, the overlap between the first period and the operating period of the first timer may be such that all operating periods of the first timer overlap with the first period, in which case the overlapping time domain interval includes all operating periods of the first timer.

[0092] In some possible embodiments, a PDCCH transmitted by network device 101 within a time-domain interval includes a PDCCH carrying a DCI that schedules data transmission.

[0093] In one example, the DCI that schedules the data transmission may be, for example, the DCI that schedules data retransmissions.

[0094] Note that the DCI for scheduling data retransmission and the DCI for scheduling new data transmissions use the same DCI format. The value of the New Data Indicator (NDI) bit in the DCI determines whether the DCI is scheduling retransmission data or new transmission data. For example, if the NDI bit value in the current DCI and the previous DCI of the same HARQ process are reversed, for example, if the NDI bit value in the previous DCI is 0 and the NDI bit value in the current DCI is 1, then the current DCI will schedule retransmission data. However, if the NDI bit values ​​in the two corresponding DCIs of the same HARQ process are not reversed, then the current DCI will schedule new transmission data.

[0095] In some possible embodiments, the network device 101 may be configured for cross-carrier scheduling.

[0096] Here, the network device 101 may support both single-carrier scheduling and cross-carrier scheduling capabilities. If cross-carrier scheduling is configured for the network device 101, it can perform cross-carrier scheduling; if cross-carrier scheduling is not configured for the network device 101, it can perform single-carrier scheduling.

[0097] For example, in a data retransmission scenario, if cross-carrier scheduling is not configured for network device 101, for example, if scheduling is done on a single carrier, network device 101 can only send PDCCH on the first carrier where the data transmission failure occurred, and user equipment 102 accordingly monitors PDCCH on that first carrier.

[0098] As another example, in a data retransmission scenario, if cross-carrier scheduling is configured, network device 101 can transmit PDCCH on a carrier other than the first carrier, for example, on a second carrier, and user equipment 102 accordingly monitors the PDCCH on the second carrier. Possible embodiments of the second carrier should be seen in the description of the embodiments below, and a detailed description is omitted here.

[0099] Here, the first carrier is network device 101 Cell DTX is set by It is a carrier, and at the same time, the first carrier is the C-DRX of the user equipment 102. is set It is also a carrier. In this scenario, the DTX is the first carrier of network device 101. DurationDuring the first period and the C-DRX period in the first carrier of the user equipment 102, the operating period of the first timer has overlapping time domain intervals.

[0100] In step S202, the user equipment 102 receives PDCCH within the time domain interval.

[0101] In some possible embodiments, user equipment 102 monitors and / or receives PDCCH within a time-domain interval. For example, user equipment 102 is a DCI that still monitors PDCCH within a time-domain interval in which the operating period of the first timer and the first period overlap, and schedules, for example, data retransmission or new transmission.

[0102] In the embodiments of this disclosure, network device 101 Set by DTX duration If the operating period of the first timer overlaps with the first period and the user equipment 102C-DRX period, the network device 101 continues to transmit PDCCH even within the overlapping time domain interval, and the user equipment 102 monitors PDCCH within that time domain interval to obtain a data transmission schedule within that time domain interval, thereby ensuring data transmission performance and low transmission delay.

[0103] An embodiment of the present disclosure provides a method for transmitting a downlink channel, which is performed by a network device 101. Referring to Figure 3, Figure 3 shows a method for transmitting a downlink channel as shown in an exemplary embodiment, which includes step S301, and specifically is as follows:

[0104] In step S301, DTX Duration If there is an overlapping time domain interval between the first period and the operating period of the first timer, the network device 101 transmits PDCCH to the user equipment 102 within that time domain interval.

[0105] In some possible embodiments, the network device 101 performs discontinuous transmission (DTX). Duration It is set to.

[0106] In some possible embodiments, DTX Duration The first period is DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and DTX Duration The period during which the network device 101 is inactive, DTX Duration The period during which the network device is turned off, DTX Duration This is either the period during which the network device is in a power-saving state, or one of the following:

[0107] In one example, the first period is a period during which network device 101 does not transmit at least some downlink information, as configured in cell DTX, and is also called the DTX-off period.

[0108] In some possible embodiments, the network device 101 is in an active period within a time domain interval, i.e., it needs to transmit a PDCCH.

[0109] In some possible embodiments, the user equipment 102 monitors and / or receives the PDCCH within a time-domain interval.

[0110] In some possible embodiments, the first timer is a timer for data retransmission in the C-DRX period set in the user equipment 102.

[0111] In some possible embodiments, the first timer is A retransmission timer that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0112] In one example, the retransmission timer corresponding to the Downlink Hybrid Automatic Retransmission Request (HARQ) process is, for example, drx-RetransmissionTimerDL. In combination with the above-described embodiment, the retransmission timer may be activated after the user equipment 102 has fed back a NACK, i.e., after a downlink transmission failure, and the network device 101 retransmits a DCI that schedules data retransmission within a time-domain interval. The user equipment 102 obtains the DCI that schedules data retransmission by monitoring the PDCCH within a time-domain interval, ensuring that the retransmitted downlink data can be obtained in a timely manner.

[0113] In one example, the retransmission timer corresponding to the uplink HARQ process is, for example, drx-RetransmissionTimerUL. Combined with the description of the embodiment above, when the retransmission timer starts uplink transmission, it may or may not fail. If data retransmission is required, the network device 101 may schedule the retransmission data within a time domain interval. The user equipment 102 monitors the PDCCH within the time domain interval and determines whether or not the uplink data needs to be retransmitted.

[0114] In some possible embodiments, the PDCCH includes at least a PDCCH for carrying a DCI that schedules data transmissions.

[0115] In one example, the PDCCH transmitted by the network device 101 in the overlapping time domain interval may be all PDCCHs.

[0116] In one example, a PDCCH transmitted by network device 101 in the overlapping time domain interval includes a PDCCH for carrying a DCI that schedules data retransmissions.

[0117] Here, the network device 101 may be configured with different PDCCHs, and different PDCCHs can carry DCIs of the corresponding DCI type; in other words, PDCCHs can be divided into different types depending on the type of DCI they carry.

[0118] For example, some PDCCH resources carry only certain types of DCIs, and if DCI types are distinguished based on, for example, the transmission method of the DCI, then a PDCCH may carry multicast DCIs or unicast DCIs. If DCI types are distinguished based on what the DCI carries, then a PDCCH may carry DCIs that schedule data transmissions, or it may not be able to carry DCIs that schedule data transmissions.

[0119] Here, the PDCCH carrying the DCI for scheduling data transmission may be, for example, a PDCCH carrying a DCI for scheduling data retransmission. In combination with the above-described embodiment, the DCI for scheduling data retransmission and the DCI for scheduling new data transmission have the same DCI format, and it is possible to determine whether the scheduled data is a retransmission or a new transmission based on the NDI in the DCI.

[0120] In one example, the network device 101 does not need to transmit a PDCCH that cannot carry a DCI for scheduling data within the overlapping time domain interval. The user equipment 102 does not need to monitor the PDCCH within the time domain interval.

[0121] In some possible embodiments, the time domain interval is A portion of the operating period of the first timer and the overlap range formed in the first period, The first timer includes at least one of the entire operating period and the overlap range formed during the first period.

[0122] In one example, if the time domain interval includes a portion of the operating period of the first timer and an overlap range formed in the first period, then the time domain interval includes a portion of the operating period of the first timer. As a result, the network device 101 transmits PDCCH during the portion of the operating period, and the user equipment 102 monitors PDCCH during the portion of the operating period.

[0123] In one example, if the time domain interval includes all operating periods of the first timer and the overlap range formed in the first period, then the time domain interval includes all operating periods of the first timer. As a result, the network device 101 transmits PDCCH for all operating periods of the first timer, and the user equipment 102 monitors PDCCH for all operating periods.

[0124] In the embodiments of this disclosure, network device 101 Set by DTX duration If the first period and the operating period of the first timer in the user equipment 102C-DRX period overlap, the network device 101 continues to transmit PDCCH within the overlapping time domain interval, thereby ensuring that data is transmitted and scheduled in a timely manner within that time domain interval for the user equipment 102, and that data transmission performance and low transmission delay are ensured.

[0125] An embodiment of the present disclosure provides a method for transmitting a downlink channel, which is performed by a network device 101. Referring to Figure 4, Figure 4 shows a method for transmitting a downlink channel as shown in an exemplary embodiment, which includes step S401, as shown in Figure 4, and specifically as follows:

[0126] In step S401, DTX DurationIf there is an overlapping time domain interval between the first period and the operating period of the first timer, and the network device 101 is scheduling on a single carrier, the network device 101 transmits PDCCH on the first carrier to the user equipment 102 within the time domain interval.

[0127] In some possible embodiments, the network device 101 supports the ability to perform cross-carrier scheduling, and if cross-carrier scheduling is not configured, the network device 101 can schedule on a single carrier.

[0128] In some possible embodiments, the first carrier is the carrier in which a data transmission failure occurs. For example, a data transmission error or data loss occurs on the first carrier.

[0129] In some possible embodiments, the first carrier simultaneously transmits the cell DTX of network device 101 and the C-DRX of user equipment 102. is set For example, in the first carrier, the network device 101 is in cell DTX, and the user equipment 102 is in the C-DRX period. Here, the time domain interval is the overlap interval between the first period in which the network device 101 is in DTX on the first carrier and the operating period of the first timer.

[0130] In some possible embodiments, the user equipment 102 monitors and / or receives the PDCCH within a time-domain interval and on the first carrier.

[0131] In some possible embodiments, the first timer is A retransmission timer for the downlink HARQ process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0132] In one example, if a data transmission failure occurs on the first carrier, for example, if a downlink data transmission failure occurs, the user equipment 102 may feed back a NACK to the network device 101. After feeding back the NACK, a retransmission timer corresponding to the downlink HARQ process is started. Within overlapping time domain intervals, for example, within some or all of the operating period of the retransmission timer, the network device 101 transmits a PDCCH on the first carrier, and the user equipment 102 monitors and receives the PDCCH on the first carrier.

[0133] The PDCCH may also carry a DCI that schedules data retransmission, and this DCI contains the same data that failed to be transmitted by the first carrier.

[0134] In embodiments of this disclosure, if cross-carrier scheduling is not configured, the network device 101 may schedule data retransmission on a single carrier. In response to a data transmission failure that occurs on the first carrier, the network device 101 must reschedule on the first carrier within the overlapping time domain interval, for example by retransmitting the failed data, thereby facilitating the user equipment 102 to obtain the same retransmitted data on the first carrier.

[0135] An embodiment of the present disclosure provides a method for transmitting a downlink channel, which is performed by a network device 101. Referring to Figure 5, Figure 5 shows a method for transmitting a downlink channel as shown in an exemplary embodiment, which includes step S501, specifically as follows:

[0136] In step S501, DTX DurationIf there is an overlapping time domain interval between the first period and the operating period of the first timer, and cross-carrier scheduling is set for the network device 101, then within that time domain interval, the network device 101 transmits PDCCH on the second carrier to the user equipment 102.

[0137] In some possible embodiments, the first carrier is the carrier in which the data transmission failure occurs.

[0138] In some possible embodiments, the first carrier simultaneously transmits the cell DTX of network device 101 and the C-DRX of user equipment 102. is set For example, in the first carrier, network device 101 is in cell DTX and user equipment 102 is in the C-DRX cycle.

[0139] In some possible embodiments, the second carrier is the same as or different from the first carrier.

[0140] In some possible embodiments, the second carrier is network device 101 Cell DTX is not set by It's a career.

[0141] In some possible embodiments, the second carrier is the C-DRX period of the user equipment 102. is set It's a career.

[0142] In some possible embodiments, the second carrier is determined based on the third carrier group.

[0143] Here, the third carrier group, C-DRX is set First Carrier Group and Cell DTX is set This is a set of careers determined based on the second career group.

[0144] In some possible embodiments, the method further includes step S501', specifically as follows:

[0145] In step S501', the network device 101 connects to the user equipment 102 is set C-DRX cycle first carrier group and network device 101 Cell DTX is set by The second career is determined based on the second career group. The second career is a career in the third career group, and the careers in the third career group belong to the first career group, but do not belong to the intersection of the first and second career groups.

[0146] In one example, the third-carrier group includes at least one carrier.

[0147] In one example, the first carrier group includes at least one carrier, and the second carrier group includes at least one carrier, for example, both the first and second carrier groups include the first carrier.

[0148] In some embodiments, the second carrier may differ depending on whether the third carrier group is an empty set or not.

[0149] In some possible embodiments, the second carrier is a carrier in a third carrier group, where the first carrier group includes at least one carrier different from the first carrier.

[0150] In this embodiment, the third carrier group is not an empty set and contains at least one carrier, where the second carrier is different from the first carrier, and the second carrier may be any one of the carriers in the third carrier group.

[0151] In one example, within overlapping time domain intervals, network device 101 transmits a PDCCH in the third carrier group, and for example, transmits a PDCCH of DCI for data retransmission scheduling in the second carrier within the third carrier group. User equipment 102 then monitors the PDCCH in the third carrier group to obtain possible data retransmission scheduling.

[0152] In some possible embodiments, if the third carrier group is an empty set, the second carrier is the same as the first carrier.

[0153] In this embodiment, if the third carrier group is an empty set, the second carrier is the same as the first carrier.

[0154] In this embodiment, since the third carrier group determined by the first and second carrier groups is an empty set, the network device 101 can transmit a PDCCH via the first carrier to carry a DCI that schedules data transmission, for example, a PDCCH of a DCI that schedules data retransmission. The retransmitted data is the same as the data that failed to be transmitted.

[0155] In this embodiment, please refer to the embodiment in which the aforementioned cross-carrier scheduling is not set.

[0156] In the embodiments of this disclosure, if cross-carrier scheduling is configured, network device 101 can reschedule data transmission failures that occur on the first carrier on other carriers within overlapping time domain intervals, thereby facilitating user equipment 102 to obtain retransmitted data on other carriers.

[0157] Embodiments of this disclosure provide a method for transmitting a downlink channel, which is performed by a network device 101. The method includes steps S501 to S502, specifically as follows:

[0158] In step S501, DTX Duration If there is an overlapping time domain interval between the first period and the operating period of the first timer, and cross-carrier scheduling is set for the network device 101, then within that time domain interval, the network device 101 transmits PDCCH on the second carrier to the user equipment 102.

[0159] Here, please refer to the description of the embodiment in step S501 above, and a detailed explanation will be omitted here.

[0160] In step S502, within the time domain interval, the network device 101 is in cell DTX is set The second carrier group does not transmit PDCCH.

[0161] In some possible embodiments, the network device 101 is considered to be in an inactive period during the time it does not transmit PDCCH in DTX.

[0162] In some possible embodiments, the network device 101 is a DTX in the second carrier group. Duration The first period is, that is, the time domain interval is the interval corresponding to the overlap between the first period in which the network device 101 is DTX in the second carrier group and the operating period of the first timer.

[0163] At this time, the network device 101 does not transmit PDCCH on the second carrier group, that is, it can maintain an energy-saving state even on the second carrier group, and transmits PDCCH on carriers other than the second carrier group, for example, the second carrier, thereby enabling timely data retransmission.

[0164] In some possible embodiments, the user equipment 102 does not monitor the PDCCH in the second carrier group, for example, during an inactive period in the second carrier group.

[0165] In the embodiments of this disclosure, within overlapping time domain intervals, the network device 101 can schedule data retransmissions on other carriers while maintaining an energy-saving state on the carrier corresponding to DTX, thereby enabling timely data retransmissions and reducing transmission delays.

[0166] An embodiment of the present disclosure provides a method for not transmitting a downlink channel, which is performed by a network device 101. Referring to Figure 6, Figure 6 shows a method for transmitting a downlink channel as shown in an exemplary embodiment, which includes step S601, as shown in Figure 6, and specifically as follows:

[0167] In step S601, DTX Duration If there is a time domain interval in which the first period and the operating period of the first timer overlap, the network device 101 does not transmit PDCCH within the time domain interval when cross-carrier scheduling is set and the third carrier group is an empty set.

[0168] If the conditions of step S601 are not met, the method may further include step S301, and a detailed description of the relevant embodiments will be omitted.

[0169] In some possible embodiments, the explanation of the relevant noun in step S601 is given in reference to the explanations in steps S201, S301, S401 and S501, and a detailed explanation is omitted here.

[0170] In some possible embodiments, the network device 101 is DTX Duration It is set to.

[0171] In some possible embodiments, DTX Duration The first period is DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and DTX Duration The period during which the network device is inactive, DTX Duration The period during which the network device is turned off, DTX Duration This is either the period during which the network device is in a power-saving state, or one of the following:

[0172] In some possible embodiments, the carriers of the third carrier group are the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0173] In some possible embodiments, a relevant description of the third carrier group should be found in the embodiment corresponding to step S501.

[0174] If the third carrier group determined based on the first and second carrier groups is an empty set, it indicates that network device 101 is in the first period for all corresponding carriers and there may be no carriers suitable for retransmission scheduling. In this case, network device 101 does not transmit PDCCH within that time domain interval in order to save energy.

[0175] In some possible embodiments, the user equipment 102 does not monitor the PDCCH within the time domain interval; that is, even when the first timer is operating, the user equipment 102 may not monitor the PDCCH for a period of time in order to achieve its own energy saving.

[0176] In the embodiments of this disclosure, if cross-carrier scheduling is set and the third carrier group is an empty set, the network device 101 does not need to transmit PDCCH within the time domain interval. The user equipment 102 does not monitor the PDCCH within the time domain interval either, thereby achieving energy savings for both the network device 101 and the user equipment 102.

[0177] An embodiment of the present disclosure provides a method for receiving a downlink channel, which is performed by user equipment 102. Referring to Figure 7, Figure 7 shows a method for receiving a downlink channel as shown in an exemplary embodiment, which includes step S701, specifically as follows:

[0178] In step S701, the DTX configured by the network device Duration If there is a time domain interval in which the first period and the operating period of the first timer overlap, the user equipment 102 receives the PDCCH transmitted from the network device 101 within that time domain interval.

[0179] In some possible embodiments, DTX Duration The first period is DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and DTX Duration The period during which the network device is inactive, DTX Duration The period during which the network device is turned off, DTX Duration This is either the period during which the network device is in a power-saving state, or one of the following:

[0180] In one example, the first period is a period set in the cell DTX of network device 101 during which at least some downlink information is not transmitted, and is also called the DTX-off period.

[0181] In some possible embodiments, the first timer is a timer for data retransmission within the C-DRX period set in the user equipment 102.

[0182] In some possible embodiments, the first timer is A retransmission timer for the downlink HARQ process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0183] In some possible embodiments, the network device 101 transmits the PDCCH within the time domain interval.

[0184] In some possible embodiments, the PDCCH includes at least a PDCCH for carrying a DCI that schedules data transmissions.

[0185] For example, network device 101 transmits a PDCCH within the time domain interval to carry a DCI for scheduling data transmission, such as a PDCCH for scheduling data retransmission. User equipment 102 monitors the PDCCH within the time domain interval.

[0186] In some possible embodiments, the time domain interval is A portion of the operating period of the first timer and the overlap range formed in the first period, This includes one of the following: the entire operating period of the first timer and the overlap range formed during the first period.

[0187] In some possible embodiments, please refer to the related embodiments of steps S201, S301, S401, S501 and S601 for the embodiment of step S701, and a detailed explanation is omitted here.

[0188] In the embodiments of this disclosure, network device 101 Set by DTX duration If the first period and the operating period of the first timer in the user equipment 102C-DRX period overlap, the user equipment 102 monitors the PDCCH within that time domain interval, thereby obtaining data transmission scheduling and ensuring data transmission performance and low transmission delay.

[0189] Embodiments of this disclosure provide a method for receiving a downlink channel, which is performed by user equipment 102. The method includes step S7101, which specifically is as follows:

[0190] In step S7101, DTX Duration If there is an overlapping time domain interval between the first period and the operating period of the first timer, and the network device is scheduling on a single carrier, then within the time domain interval, the user equipment 102 receives the PDCCH transmitted from the network device 101 on the first carrier.

[0191] In some possible embodiments, the first carrier is the carrier in which the data transmission failure occurs.

[0192] In some possible embodiments, for the embodiment of step S7101, please refer to the related embodiments of steps S701 and S401, and a detailed description is omitted here.

[0193] In embodiments of this disclosure, if cross-carrier scheduling is not configured for the network device 101, the user equipment 102 still monitors the PDCCH on the first carrier where the data transmission failure occurred, thereby obtaining a retransmission schedule for the same data.

[0194] Embodiments of this disclosure provide a method for receiving a downlink channel, which is performed by user equipment 102. The method includes step S7201, which specifically is as follows:

[0195] In step S7201, DTX Duration If there is an overlapping time domain interval between the first period and the operating period of the first timer, and cross-carrier scheduling is set for the network device 101, then within that time domain interval, the user equipment 102 receives the PDCCH transmitted from the network device 101 on the second carrier.

[0196] In some possible embodiments, the second carrier is the same as or different from the first carrier where the data transmission failure occurs.

[0197] In some possible embodiments, the second carrier is network device 101 Cell DTX is not set by It's a career.

[0198] In some possible embodiments, the second carrier is the C-DRX period of the user equipment 102. is set It's a career.

[0199] In some possible embodiments, the method further includes step S7201', specifically as follows:

[0200] In step S7201', the user equipment 102 has a C-DRX period is set First Carrier Group, and Network Device 101 Cell DTX is set by The second career will be determined based on the second career group.

[0201] The second carrier is a carrier in the third carrier group, and the carriers in the third carrier group belong to the aforementioned first carrier group, but do not belong to the intersection of the first and second carrier groups.

[0202] In some possible embodiments, if the third carrier group is not empty, then the second carrier is a carrier in the first carrier group.

[0203] In some possible embodiments, if the first carrier group is an empty set, the second carrier is the same as the first carrier.

[0204] In some possible embodiments, please refer to the relevant embodiments of step S501 for embodiments of step S7201, and a detailed description is omitted here.

[0205] In the embodiments of this disclosure, when cross-carrier scheduling is configured on the network device 101, the user equipment 102 can monitor the PDCCH on carriers other than the first carrier, thereby obtaining retransmitted data of the same data on other carriers.

[0206] Embodiments of the present disclosure provide a method for receiving a downlink channel, which is performed by user equipment 102. The method includes steps S7201 and S7202, specifically as follows:

[0207] In step S7201, DTX duration If there is an overlapping time domain interval between the first period and the operating period of the first timer, and cross-carrier scheduling is set for the network device 101, the user equipment 102 receives the PDCCH transmitted from the network device 101 on the second carrier within the time domain interval.

[0208] Here, the embodiment of step S7201 is described in the above description of the embodiment, and a detailed explanation is omitted here.

[0209] In step S7202, within the time domain interval, the user equipment 102 moves to cell DTX is set The second carrier group does not receive PDCCH.

[0210] In some possible embodiments, the embodiment of step S7202 is described by referring to the relevant embodiment of step S502, and a detailed description is omitted here.

[0211] In the embodiments of this disclosure, within overlapping time domain intervals, the user equipment 102 monitors the PDCCH in the second carrier to obtain data retransmission scheduling in a timely manner and reduce transmission delay. In contrast, the second carrier group does not need to monitor the PDCCH, thereby maintaining energy-saving effects.

[0212] Embodiments of this disclosure provide a method for not receiving a downlink channel, which is performed by user equipment 102. The method includes step S7301, which specifically is as follows:

[0213] In step S7301, if cross-carrier scheduling is set and the third carrier group is an empty set, the DTX set by the network device 101 Duration Within the time domain interval in which the first period and the operating period of the first timer overlap, the user equipment 102 does not receive PDCCH.

[0214] In some possible embodiments, the carriers of the third carrier group are the C-DRX period of the user equipment. is set It belongs to the First Carrier Group, but the First Carrier Group and network devices Cell DTX is set by It does not belong to the common set with the second career group.

[0215] In some possible embodiments, please refer to the relevant embodiments of step S601 for embodiments of step S7301, and a detailed description is omitted here.

[0216] In some possible embodiments, DTX Duration The first period is DTX Duration in The aforementioned network device does not transmit at least some downlink information. Period and DTX Duration The period during which the network device is inactive, DTX Duration The period during which the network device is turned off, DTX Duration This is either the period during which the network device is in a power-saving state, or one of the following:

[0217] In some possible embodiments, the first timer is A retransmission timer for the downlink HARQ process, Includes at least one of the following: a retransmission timer corresponding to the uplink HARQ process.

[0218] In some possible embodiments, the PDCCH includes at least a PDCCH for carrying a DCI that schedules data transmissions.

[0219] In embodiments of this disclosure, if cross-carrier scheduling is configured for the network device 101 and the first carrier group is an empty set, the user equipment 102 does not need to monitor the PDCCH within the time domain interval in order to achieve energy saving.

[0220] Based on a similar concept to the above-described embodiment of the method, embodiments of the present disclosure further provide a communication device which may have the functionality of the network device 101 in the above-described embodiment and may be used to perform steps performed by the network device 101 provided by the above-described embodiment. The functionality may be implemented by hardware, by software, or by hardware running corresponding software. The hardware or software includes one or more modules corresponding to the above functionality.

[0221] In one possible implementation, the apparatus 800 shown in FIG. 8 can execute the steps performed by the network device 101 according to the method embodiments above as the network device 101 according to the method embodiments. As shown in FIG. 8, the apparatus 800 may include a transceiver module 801, where the transceiver module 801 can support communication by a communication device.

[0222] When executing the steps performed by the network device 101, the network device performs discontinuous transmission (DTX) Duration and the transceiver module 801 is configured to transmit a physical downlink control channel (PDCCH) to a user equipment within a time domain interval when there is a time domain interval where the first period of DTX Duration overlaps with the operating period of the first timer. Here, the first timer is a timer for data retransmission in a connection mode discontinuous reception (C-DRX) period set for the user equipment.

[0223] Based on the same concept as the above method embodiments, embodiments of the present disclosure further provide a communication device. The device can have the functions of the network device 101 in the above method embodiments and can also be used to execute the steps performed by the network device 101 provided by the above method embodiments. The functions may be implemented by hardware, or may be implemented by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0224] In one possible implementation, the apparatus 800 shown in FIG. 8 can execute the steps performed by the network device 101 in the above method embodiments as the network device 101 according to the method embodiments. As shown in FIG. 8, the apparatus 800 may include a transceiver module 801, where the transceiver module 801 may be used to support communication by a communication device.

[0225] When performing the steps carried out by the network device 101, the transmit / receive module 801 further performs the DTX if cross-carrier scheduling is set and the third carrier group is an empty set. Duration The PDCCH is configured not to transmit within the time domain interval in which the first period and the operating period of the first timer overlap. Here, the carrier of the third carrier group is the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0226] If the communication device is a network device 101, its structure may be as shown in Figure 9. The structure of the communication device will be described using a base station as an example. As shown in Figure 9, the device 900 includes a memory 901, a processor 902, a transceiver component 903, and a power supply component 906. Here, the memory 901 is coupled to the processor 902 and may be used to store programs and data necessary for the implementation of each function by the communication device 900. The processor 902 is configured to support the implementation of the corresponding function by the communication device 900, which may be implemented by calling a program stored in the memory 901. The transceiver component 903 may be a radio transceiver used to support the communication device 900 in signaling and / or sending and receiving data via a radio interface. The transmitting / receiving component 903 may also be called a transmitting / receiving unit or a communication unit, and the transmitting / receiving component 903 may include a radio frequency component 904 and one or more antennas 905, where the radio frequency component 904 may be a remote radio unit (RRU), which can be used specifically for transmitting radio frequency signals and converting radio frequency signals to baseband signals, and the one or more antennas 905 can be used specifically for radiating and receiving radio frequency signals.

[0227] When the communication device 900 needs to transmit data, the processor 902 can perform baseband processing on the data to be transmitted and then output a baseband signal to the radio frequency unit. The radio frequency unit then performs radio frequency processing on the baseband signal and transmits the radio frequency signal in the form of electromagnetic waves via the antenna. When data is transmitted to the communication device 900, the radio frequency unit receives the radio frequency signal via the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 902. The processor 902 then converts the baseband signal into data and processes the data.

[0228] Based on the same concept as the above-described embodiment of the method, embodiments of the present disclosure further provide a communication device which may include the functionality of the user equipment 102 in the above-described embodiment and may be used to perform steps performed by the user equipment 102 provided by the above-described embodiment. The functionality may be implemented by hardware, or by software or by hardware running corresponding software. The hardware or software includes one or more modules corresponding to the above functionality.

[0229] In one possible implementation, the communication device 1000 shown in Figure 10 performs the steps performed by the user equipment 102 in the above method embodiment as the user equipment 102 according to the above method embodiment. As shown in Figure 10, the communication device 1000 may also include a transceiver module 1001, which may be used to support communication by the communication device.

[0230] When performing the steps carried out by the user equipment 102, the transmit / receive module 1001 transmits the DTX set by the network device. Duration If there is a time domain interval in which the first period and the operating period of the first timer overlap, it is configured to receive PDCCH transmitted from a network device within that time domain interval. Here, the first timer is a timer for data retransmission within the C-DRX period set in the user equipment.

[0231] Based on the same concept as the above-described embodiment of the method, embodiments of the present disclosure further provide a communication device which may include the functionality of the user equipment 102 in the above-described embodiment and may be used to perform steps performed by the user equipment 102 provided by the above-described embodiment. The functionality may be implemented by hardware, or by software or by hardware running corresponding software. The hardware or software includes one or more modules corresponding to the above functionality.

[0232] In one possible implementation, the communication device 1000 shown in Figure 10 performs the steps performed by the user equipment 102 in the above method embodiment as the user equipment 102 according to the above method embodiment. As shown in Figure 10, the communication device 1000 includes a transceiver module 1001, which may be used to support communication by the communication device.

[0233] When performing the steps carried out by the user equipment 102, the transmit / receive module 1001 further performs the DTX set by the network device if the network device has cross-carrier scheduling configured and the third carrier group is an empty set. Duration The PDCCH is configured not to be received within the time domain interval in which the first period and the operating period of the first timer overlap. Here, the carrier of the third carrier group is the C-DRX period of the user equipment. is set It belongs to the first carrier group, but the first carrier group and the network device Cell DTX is set by It does not belong to the common set with the second career group.

[0234] If the communication device is user equipment 102, its structure may further be as shown in Figure 11. Referring to Figure 11, the device 1100 may include one or more of the following components: processing component 1102, memory 1104, power supply component 1106, multimedia component 1108, audio component 1110, input / output (I / O) interface 1112, sensor component 1114, and communication component 1116.

[0235] The processing component 1102 typically controls the general operation of the control unit 1100, such as operations related to display, telephone calling, data communication, camera operation, and recording operation. The processing component 1102 can execute instructions by including at least one processor 1120 to complete all or some of the steps of the above method. The processing component 1102 may also include one or more modules to facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.

[0236] Memory 1104 is configured to support operations on device 1100 by storing various types of data. Examples of this data include instructions for any application program or method operated on device 1100, contact data, phonebook data, messages, photos, videos, etc. Memory 1104 can be implemented using any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0237] The power supply component 1106 provides power to various components of the device 1100. The power supply component 1106 may include a power management system, one or more power supplies, and other components related to generating, managing, and distributing power for the device 1100.

[0238] The multimedia component 1108 includes a screen that provides an output interface between the device 1100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to detect touches, slides, and gestures on the touch panel. The touch sensors detect not only the boundary of a touch or slide operation, but also the wake-up time and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1108 includes one front camera and / or a rear camera. When the device 1100 is in an operating mode such as shooting mode or video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may have a fixed optical lens system or have a focal length and optical zoom capability.

[0239] The audio component 1110 is configured to output and / or input audio signals. For example, the audio component 1110 includes one microphone (MIC), and when the device 1100 is in an operating mode such as calling mode, recording mode, or voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in memory 1104 or transmitted via communication component 1116. In some embodiments, the audio component 1110 further includes one speaker for outputting an audio signal.

[0240] The I / O interface 1112 provides an interface between the processing component 1102 and a peripheral interface module, which may be a keyboard, click wheel, buttons, etc. These buttons include, but are not limited to, a homepage button, volume buttons, a power button, and a lock button.

[0241] The sensor component 1114 includes one or more sensors to provide status evaluation for each aspect of the device 1100. For example, the sensor component 1114 can detect the on / off state of the device 1100 and the relative positioning of components. For example, the components are the display and keypad of the device 1100, and the sensor component 1114 can further detect changes in the position of the device 1100 or one component of the device 1100, whether there is contact between the user and the device 1100, the orientation or acceleration / deceleration of the device 1100, and changes in the temperature of the device 1100. The sensor component 1114 may include a proximity sensor configured to detect whether an object is present in the vicinity without any physical contact. The sensor component 1114 may further include an optical sensor such as a CMOS or CCD image sensor for use in imaging applications. In some embodiments, the sensor component 1114 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0242] The communication component 1116 is configured to facilitate wired or wireless communication between the device 1100 and other devices. The device 1100 can access a wireless network based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In one exemplary embodiment, the communication component 1116 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 1116 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0243] In exemplary embodiments, the apparatus 1100 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing units (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above method.

[0244] In exemplary embodiments, a non-temporary computer-readable storage medium containing instructions is further provided, for example, a memory 1104 containing instructions, which can be executed by a processor 1120 of the device 1100 to complete the method. For example, the non-temporary computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, tape, floppy disk, optical data storage device, etc.

[0245] A person skilled in the art, after considering the specification and practicing the invention disclosed herein, may readily conceive of other embodiments of this disclosure. This disclosure is intended to cover any variations, uses, or adaptive changes of the invention, which may include common or commonly used technical means of the art that are in accordance with the general principles of the invention and are not disclosed herein. The specification and examples are to be considered merely illustrative, and the true scope and spirit of this disclosure are indicated by the following claims.

[0246] It should be understood that the embodiments of this disclosure are not limited to the exact structures described above and shown in the drawings, and that various modifications and changes are possible as long as they do not deviate from their scope. The scope of the embodiments of this disclosure is limited only to the attached claims. [Industrial applicability]

[0247] The method disclosed herein involves network devices Set by DTX DurationIf the first period of the user equipment C-DRX cycle overlaps with the operating period of the first timer, the network device still transmits PDCCH within the overlapping time domain interval, and the user equipment monitors PDCCH within that time domain interval, thereby ensuring that data transmission scheduling can still be obtained within that time domain interval, thus ensuring data transmission performance and low transmission delay.

Claims

1. A method for transmitting a downlink channel, which is performed by a network device that configures discontinuous transmission (DTX), and the method is If there is a time domain interval in which the first period of the DTX and the operating period of the first timer overlap, the step includes transmitting a physical downlink control channel (PDCCH) to the user equipment within the time domain interval. The first timer is a timer for data retransmission during the connection mode discontinuous reception (C-DRX) cycle set in the user equipment. How to send a downlink channel.

2. The first period of the aforementioned DTX is, A period during which at least some of the downlink information in the aforementioned DTX is not transmitted, The period during which the network device in the DTX is inactive, The period during which the network device in the DTX is turned off, The period during which the network device in the DTX is in an energy-saving state, and one of the following: The method according to claim 1.

3. When the aforementioned network device schedules data using a single carrier, The step of transmitting a physical downlink control channel (PDCCH) to the user equipment within the aforementioned time domain interval is: Within the aforementioned time domain interval, a step of transmitting the PDCCH to the user equipment on a first carrier, the first carrier being a carrier in which a data transmission failure occurs, The method according to claim 1 or 2.

4. If cross-carrier scheduling data is set for the aforementioned network device, The step of transmitting a physical downlink control channel (PDCCH) to the user equipment within the aforementioned time domain interval is: Within the aforementioned time domain interval, the second carrier transmits the PDCCH to the user equipment, wherein the second carrier includes the same or different steps as the first carrier in which the data transmission failure occurs. The method according to claim 1 or 2.

5. The second carrier is a carrier that cannot be applied to the cell DTX of the network device. The method according to claim 4.

6. The second carrier is a carrier applicable to the C-DRX period of the user equipment. The method according to claim 5.

7. The aforementioned method, A step of determining a second carrier based on a first carrier group applicable to the C-DRX period of the user equipment and a second carrier group applicable to the cell DTX of the network device, further comprising the step of determining that the second carrier is a carrier in a third carrier group, and that the carriers of the third carrier group belong to the first carrier group but do not belong to the common set of the first carrier group and the second carrier group. The method according to any one of claims 4 to 6.

8. If the third carrier group is an empty set, then the second carrier is the same as the first carrier. The method according to claim 7.

9. The aforementioned method, Within the aforementioned time domain interval, the PDCCH is not transmitted in the second carrier group applicable to the cell DTX. The method according to any one of claims 4 to 8.

10. The first timer is, A retransmission timer that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, A retransmission timer corresponding to the uplink HARQ process, and at least one of the following: The method according to any one of claims 1 to 9.

11. The PDCCH includes at least a PDCCH for carrying downlink control information (DCI) for scheduling data transmission. The method according to any one of claims 1 to 9.

12. A method of not transmitting a downlink channel, which is performed by a network device configuring DTX, and the method is If cross-carrier scheduling is set and the third carrier group is an empty set, the procedure includes not transmitting PDCCH within the time domain interval in which the first period of the DTX and the operating period of the first timer overlap. The carriers of the third carrier group belong to the first carrier group applicable to the C-DRX period of the user equipment, but do not belong to the common set of the first carrier group and the second carrier group applicable to the cell DTX of the network device. How to avoid sending downlink channels.

13. The first timer is, A retransmission timer that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, A retransmission timer corresponding to the uplink HARQ process, and at least one of the following: The method according to claim 12.

14. The PDCCH includes at least a PDCCH for carrying downlink control information (DCI) for scheduling data transmission. The method according to claim 12.

15. A method for receiving a downlink channel, which is performed by user equipment, and the method is If there is a time domain interval in which the first period of discontinuous transmission (DTX) set by the network device and the operating period of the first timer overlap, the step includes receiving the PDCCH transmitted from the network device within the time domain interval. The first timer is a timer for data retransmission during the C-DRX period set in the user equipment. How to receive a downlink channel.

16. The first period of the aforementioned DTX is, A period during which at least some of the downlink information in the aforementioned DTX is not transmitted, The period during which the network device in the DTX is inactive, The period during which the network device in the DTX is turned off, The period during which the network device in the DTX is in an energy-saving state, and one of the following: The method according to claim 15.

17. When the aforementioned network device schedules data using a single carrier, The step of receiving a PDCCH transmitted from a network device within the aforementioned time domain interval is: A step of receiving the PDCCH transmitted from the network device within the time domain interval on a first carrier, the first carrier being a carrier in which a data transmission failure occurs, The method according to claim 15 or 16.

18. If cross-carrier scheduling is configured for the aforementioned network device, The step of receiving a PDCCH transmitted from a network device within the aforementioned time domain interval is: Within the aforementioned time domain interval, the second carrier receives the PDCCH transmitted from the network device, wherein the second carrier includes the same or different steps as the first carrier in which the data transmission failure occurred. The method according to claim 15 or 16.

19. The second carrier is a carrier that cannot be applied to the cell DTX of the network device. The method according to claim 18.

20. The second carrier is a carrier applicable to the C-DRX period of the user equipment. The method according to claim 19.

21. The aforementioned method, A step of determining a second carrier based on a first carrier group applicable to the C-DRX period of the user equipment and a second carrier group applicable to the cell DTX of the network device, further comprising the step of determining that the second carrier is a carrier in a third carrier group, and that the carriers of the third carrier group belong to the first carrier group but do not belong to the common set of the first carrier group and the second carrier group. The method according to any one of claims 18 to 20.

22. If the third carrier group is an empty set, then the second carrier is the same as the first carrier. The method according to claim 21.

23. The step further includes not receiving the PDCCH in the second carrier group applicable to the cell DTX within the aforementioned time domain interval, The method according to any one of claims 18 to 22.

24. The first timer is, A retransmission timer that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, A retransmission timer corresponding to the uplink HARQ process, and at least one of the following: The method according to any one of claims 1 to 23.

25. The PDCCH includes at least a PDCCH for carrying downlink control information (DCI) for scheduling data transmission. The method according to any one of claims 1 to 23.

26. A method for not receiving a downlink channel, which is performed by user equipment, and the method is If the network device is configured for cross-carrier scheduling and the third carrier group is an empty set, the network device includes a step of not receiving a PDCCH within a time domain interval in which the first period of the DTX configured by the network device and the operating period of the first timer overlap. The carriers of the third carrier group belong to the first carrier group applicable to the C-DRX period of the user equipment, but do not belong to the common set of the first carrier group and the second carrier group applicable to the cell DTX of the network device. How to avoid receiving downlink channels.

27. The first timer is, A retransmission timer that supports the Downlink Hybrid Automatic Retransmission Request (HARQ) process, A retransmission timer corresponding to the uplink HARQ process, and at least one of the following: The method according to claim 26.

28. The PDCCH includes at least a PDCCH for carrying downlink control information (DCI) for scheduling data transmission. The method according to claim 26.

29. A communication device configured on a network device, wherein the network device is configured for discontinuous transmission (DTX), and the communication device is If there is a time domain interval in which the first period of the DTX and the operating period of the first timer overlap, the system includes a transmit / receive module for transmitting a physical downlink control channel (PDCCH) to the user equipment within the time domain interval. The first timer is a timer for data retransmission during the connection mode discontinuous reception (C-DRX) cycle set in the user equipment. Communication device.

30. A communication device configured on a network device, wherein the network device is configured for discontinuous transmission (DTX), and the communication device is When cross-carrier scheduling is set and the third carrier group is an empty set, the system includes a transmit / receive module for not transmitting PDCCH within the time domain interval in which the first period of the DTX and the operating period of the first timer overlap. The carriers of the third carrier group belong to the first carrier group applicable to the C-DRX period of the user equipment, but do not belong to the common set of the first carrier group and the second carrier group applicable to the cell DTX of the network device. Communication device.

31. A communication device configured as user equipment, If there is a time domain interval in which the first period of DTX set by the network device and the operating period of the first timer overlap, the system includes a transmit / receive module for receiving PDCCH transmitted from the network device within the time domain interval. The first timer is a timer for data retransmission during the C-DRX period set in the user equipment. Communication device.

32. A communication device configured as user equipment, The network device includes a transmit / receive module for not receiving PDCCH within a time domain interval where the first period of DTX set by the network device and the operating period of the first timer overlap, when cross-carrier scheduling is configured and the third carrier group is an empty set. The carriers of the third carrier group belong to the first carrier group applicable to the C-DRX period of the user equipment, but do not belong to the common set of the first carrier group and the second carrier group applicable to the cell DTX of the network device. Communication device.

33. A network device including a processor and memory, The aforementioned memory is for storing computer programs, The processor is for implementing the method according to any one of claims 1 to 11 or 12 to 14 by executing the computer program. Network device.

34. A user equipment including a processor and memory, The aforementioned memory is for storing computer programs, The processor is for implementing the method according to any one of claims 15 to 25 or 26 to 28 by executing the computer program. User equipment.

35. A computer-readable storage medium in which instructions are stored, When the aforementioned instruction is called and executed by a computer, the computer is instructed to perform the method according to any one of claims 1 to 11 or 12 to 14. A computer-readable storage medium.

36. A computer-readable storage medium in which instructions are stored, When the aforementioned instruction is called and executed by a computer, the computer is instructed to perform the method according to any one of claims 15 to 25 or 26 to 28. A computer-readable storage medium.

Images