DRX Timer Activation Method, Apparatus, Communication Device, and Storage Medium

Abstract

An embodiment of the present disclosure provides a method for starting a DRX timer, the method being executed by a terminal, the method including: starting a discontinuous reception DRX timer based on a transmission type of an uplink transmission and / or a downlink transmission. In the embodiment of the present disclosure, by adapting a setting of the DRX timer to the transmission type, when performing a DRX transmission, the timing time of the DRX timer can be made more accurate, thereby improving the reliability of discontinuous reception DRX.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technologies, but is not limited to the field of wireless communication technologies, and particularly relates to a method, apparatus, communication device, and storage medium for starting a DRX timer.

Background Art

[0002] In a wireless communication process, after the transmitting side transmits information to the receiving side, the receiving side can transmit a hybrid automatic repeat request (HARQ) feedback to the transmitting side, and the transmitting side can determine whether the receiving side needs to retransmit the information based on the HARQ feedback.

[0003] In a non-terrestrial network (NTN), a terminal and a base station can communicate with a device located in the air such as a satellite. However, since a satellite is usually located at a high position, communicating via a satellite has a large delay, which affects the process of the receiving side transmitting a hybrid automatic repeat request feedback to the transmitting side. Therefore, a solution to prohibit the receiving side from transmitting a hybrid automatic repeat request feedback to the transmitting side has been proposed. In related technologies, when using the above technical solution, how to set a DRX timer in the transmission of discontinuous reception (DRX) is a problem to be considered.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments of the present disclosure disclose a method, apparatus, communication device, and storage medium for starting a DRX timer.

Means for Solving the Problems

[0005] According to a first aspect of embodiments of the present disclosure, a method for starting a DRX timer is provided, the method is executed by a terminal, and the method includes including the step of starting a discontinuous reception (DRX) timer based on the transmission type of uplink transmission and / or downlink transmission.

[0006] In one embodiment, the transmission type is uplink transmission based on a configured grant (CG), uplink transmission based on physical downlink control channel (PDCCH) dynamic scheduling, downlink transmission based on PDCCH dynamic scheduling, downlink transmission based on a configured downlink assignment, including one of them.

[0007] In one embodiment, the DRX timer includes at least one of a discontinuous reception hybrid automatic repeat request round trip time timer and a discontinuous reception retransmission timer.

[0008] In one embodiment, the method further includes determining that the transmission type of the uplink transmission is uplink transmission based on CG, and increasing the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer by a predetermined time duration.

[0009] In one embodiment, the step of increasing the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer by a predetermined time duration is When HARQ retransmission is prohibited, increasing the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by the predetermined time length, or when blind retransmission of HARQ is permitted, increasing the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by the predetermined time length, or when the network is configured to increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by a predetermined time length, increasing the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by the predetermined time length, including.

[0010] In one embodiment, the step of starting the discontinuous reception (DRX) timer is starting the uplink discontinuous reception hybrid automatic repeat request round-trip time timer, and when the uplink discontinuous reception hybrid automatic repeat request round-trip time timer expires, starting the uplink discontinuous reception retransmission timer, including.

[0011] In one embodiment, the method is determining that the transmission type of the uplink transmission is uplink transmission based on CG, and further including setting the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer to a predetermined value.

[0012] In one embodiment, the step of setting the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer to a predetermined value is When HARQ retransmission is prohibited, setting the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to the predetermined value, or, when blind retransmission of HARQ is permitted, setting the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to the predetermined value, or, when the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to the predetermined value by the network, setting the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to the predetermined value, is included.

[0013] In one embodiment, the step of starting the discontinuous reception (DRX) timer is the step of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer, and after a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, starting the uplink discontinuous reception retransmission timer, or, after the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, increasing the timing period of the uplink discontinuous reception retransmission timer by a predetermined time length and starting the uplink discontinuous reception retransmission timer, is included.

[0014] In one embodiment, the method is the step of determining that the transmission type of the uplink transmission is uplink transmission based on CG, and further includes the step of prohibiting the uplink discontinuous reception hybrid automatic repeat request round trip time timer.

[0015] In one embodiment, the step of prohibiting the uplink discontinuous reception hybrid automatic repeat request round trip time timer is When HARQ retransmission is prohibited, a step of prohibiting the uplink discontinuous reception hybrid automatic repeat request round-trip time timer, or, when HARQ blind retransmission is permitted, a step of prohibiting the uplink discontinuous reception hybrid automatic repeat request round-trip time timer, or, when the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to a predetermined value by the network, a step of prohibiting the uplink discontinuous reception hybrid automatic repeat request round-trip time timer, is included.

[0016] In one embodiment, the step of starting the discontinuous reception (DRX) timer is a step of starting an uplink discontinuous reception retransmission timer after a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited, or, after the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited, increasing the timing period of the uplink discontinuous reception retransmission timer by a predetermined time length and starting the uplink discontinuous reception retransmission timer, is included.

[0017] In one embodiment, the method is further including a step of determining that the transmission type of the uplink transmission is an uplink transmission based on PDCCH dynamic scheduling, and the step of starting the discontinuous reception (DRX) timer is including a step of starting an uplink discontinuous reception retransmission timer and / or an uplink discontinuous reception hybrid automatic repeat request round-trip time timer according to a predetermined processing method.

[0018] In one embodiment, the step of starting the uplink discontinuous reception retransmission timer according to the predetermined processing method is When HARQ retransmission is prohibited, a step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method, or when blind retransmission of HARQ is permitted, a step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method, or when the network is set to prohibit an uplink discontinuous reception hybrid automatic repeat request round trip time timer, a step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method, is included.

[0019] In one embodiment, the predetermined processing method is A method of starting the uplink discontinuous reception retransmission timer after data in PDCCH is received, or a method of starting the uplink discontinuous reception retransmission timer from the first orthogonal frequency division multiplexing (OFDM) symbol after uplink transmission ends, or a method of starting the uplink discontinuous reception retransmission timer from the start OFDM symbol of uplink transmission, or a method of starting the uplink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of uplink transmission, or a method of starting the uplink discontinuous reception retransmission timer after generating a corresponding PUSCH data packet based on a PDCCH instruction, or a method of starting the uplink discontinuous reception retransmission timer after a processing delay after PDCCH data is received, is included.

[0020] In one embodiment, the step of starting an uplink discontinuous reception hybrid automatic repeat request round trip time timer according to the predetermined processing method is When HARQ retransmission is prohibited, starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or, when HARQ blind retransmission is permitted, starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or, when the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, is included.

[0021] In one embodiment, the predetermined processing method is A method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after data in PDCCH is received, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after uplink transmission ends, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the start OFDM symbol of uplink transmission, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the first retransmission of uplink transmission, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after generating a corresponding PUSCH data packet based on a PDCCH instruction, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after the processing delay after PDCCH is received, is included.

[0022] In one embodiment, the method is Further including the step of determining that the transmission type of the downlink transmission is downlink transmission based on PDCCH dynamic scheduling, The step of starting the discontinuous reception (DRX) timer is including the step of starting a downlink discontinuous reception retransmission timer and / or a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method.

[0023] In one embodiment, the step of starting a downlink discontinuous reception retransmission timer according to the predetermined processing method is when HARQ retransmission is prohibited, the step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method, or when HARQ blind retransmission is permitted, the step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method, or when the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to be prohibited by the network, the step of starting an uplink discontinuous reception retransmission timer according to a predetermined processing method.

[0024] In one embodiment, the predetermined processing method is a method of starting the downlink discontinuous reception retransmission timer after data in the PDCCH is received, or a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the start OFDM symbol of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer after the processing delay after the PDCCH is received.

[0025] In one embodiment, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to the predetermined processing method is When HARQ retransmission is prohibited, starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or, when HARQ blind retransmission is permitted, starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or, when the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, is included.

[0026] In one embodiment, the predetermined processing method is A method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer after data in the PDCCH is received, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the downlink transmission ends, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the start OFDM symbol of the downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the first retransmission of the downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer after the processing delay after the PDCCH is received, is included.

[0027] In one embodiment, the method is Further including the step of determining that the transmission type of the downlink transmission is a downlink transmission based on a configured downlink allocation, The step of starting the discontinuous reception (DRX) timer is including steps of starting a downlink discontinuous reception retransmission timer and / or a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method.

[0028] In one embodiment, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to the predetermined processing method is when HARQ retransmission is prohibited, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or when blind retransmission of HARQ is permitted, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or when the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to be prohibited by the network, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, including.

[0029] In one embodiment, the predetermined processing method is a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the start OFDM symbol of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer after the processing delay after PDSCH is received.

[0030] In one embodiment, the step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to the predetermined processing method is When HARQ retransmission is prohibited, a step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or when blind retransmission of HARQ is permitted, a step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, or when the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, a step of starting a downlink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing method, is included.

[0031] In one embodiment, the predetermined processing method is a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the end of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the start OFDM symbol of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the first retransmission of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer after the processing delay after PDSCH is received, is included.

[0032] According to a second aspect of the embodiments of the present disclosure, a DRX timer starting device is provided, and the device includes a processing module for starting a discontinuous reception (DRX) timer based on the transmission type of uplink transmission and / or downlink transmission.

[0033] According to a third aspect of the embodiments of the present disclosure, a communication device is provided, and the communication device includes a processor, and a memory for storing instructions executable by the processor, and is included. Here, when the processor executes the executable instructions, it is configured to implement the method described in any embodiment of the present disclosure.

[0034] According to a fourth aspect of an embodiment of the present disclosure, a computer storage medium is provided, in which a program executable by a computer is stored. When the executable program is executed by a processor, the method described in any embodiment of the present disclosure is realized.

Advantages of the Invention

[0035] In an embodiment of the present disclosure, a discontinuous reception (DRX) timer is started based on the transmission type of uplink transmission and / or downlink transmission. Here, the operation of starting the discontinuous reception (DRX) timer can be determined based on the transmission type of uplink transmission and / or downlink transmission. Compared with always starting the DRX timer in a fixed manner, the operation of starting the discontinuous reception (DRX) timer can adapt to the transmission type of uplink transmission and / or downlink transmission. In this way, the setting of the DRX timer can be adapted to the transmission type, and in this way, the timing of the DRX timer can be made more accurate, thereby further improving the reliability of discontinuous reception (DRX).

Brief Description of the Drawings

[0036]

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Embodiments for Carrying Out the Invention

[0037] Here, exemplary embodiments will be described, and the examples are shown in the drawings. In the following description, when it relates to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments that are consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatuses and methods that are consistent with some aspects of the embodiments of the present disclosure, which are described in detail in the appended claims.

[0038] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments and do not limit the embodiments of the present disclosure. Unless otherwise clearly indicated in the context, the singular forms "a" and "the" used in the embodiments of the present disclosure and the appended claims also include the plural forms. Note that the term "and / or" used in this specification refers to and includes any or all possible combinations of one or more of the related and listed items.

[0039] Note that in the embodiments of the present disclosure, various information may be described using terms such as first, second, third, etc., but it should be understood that this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, unless departing from the scope of the embodiments of the present disclosure, the first information may also be called the second information, and similarly, the second information may also be called the first information. Depending on the context, the term "in the case of" used here can be interpreted as "when...", "when... is done", or "in response to determining...".

[0040] For the sake of brevity and ease of understanding, the terms used in this specification to represent size relationships are "larger" or "smaller". However, those skilled in the art should understand that the term "larger" includes the meaning of "greater than or equal to", and the term "smaller" includes the meaning of "less than or equal to".

[0041] Referring to FIG. 1, it is a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. As shown in FIG. 1, the wireless communication system is a communication system based on mobile communication technology, and the wireless communication system may include several user equipments 110 and several base stations 120.

[0042] Here, the user equipment 110 may refer to a device that provides voice and / or data connectivity to a user. The user equipment 110 can communicate with one or more core networks via a Radio Access Network (RAN). The user equipment 110 may be, for example, an Internet of Things user equipment such as a sensor device, a mobile phone, and a computer with an Internet of Things user equipment, and may be, for example, a fixed, portable, pocket, handheld, computer-integrated or in-vehicle device. For example, it may be a Station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment. Or, the user equipment 110 may be a device of a drone. Or, the user equipment 110 may be an in-vehicle device, for example, a trip computer with a wireless communication function, or a wireless user equipment of an external trip computer. Or, the user equipment 110 may be a roadside device, for example, a street lamp, a traffic signal, or other roadside devices with a wireless communication function.

[0043] The base station 120 may be a network-side device in a wireless communication system. Here, the wireless communication system may be a fourth-generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system, or the wireless communication system may be a 5G system, also known as a new wireless system or 5G NR system. Or the wireless communication system may be a system of the next generation of the 5G system. Here, the access network in the 5G system may be called the NG-RAN (New Generation-Radio Access Network).

[0044] Here, the base station 120 may be an evolved Node B (eNB) used in the 4G system. Or the base station 120 may be a gNB (gNode B) that uses a centralized and distributed architecture in the 5G system. When the base station 120 uses a centralized and distributed architecture, it usually includes a central unit (CU) and at least two distributed units (DUs). The central unit is configured with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer, and the distributed unit is configured with a Physical (PHY) layer protocol stack. Embodiments of the present disclosure do not limit the specific implementation forms of the base station 120.

[0045] A wireless connection can be established between the base station 120 and the user equipment 110 through a wireless interface. In different embodiments, the wireless interface is a wireless interface based on the fourth-generation mobile communication network technology (4G) standard, or the wireless interface is a wireless interface based on the fifth-generation mobile communication network technology (5G) standard. For example, the wireless interface is a new radio, or the wireless interface may be a wireless interface based on the next-generation mobile communication network technology standard of 5G.

[0046] In some embodiments, an E2E (End to End) connection may be established between the user equipment 110. For example, it is a scenario such as V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication, and V2P (vehicle to pedestrian) communication in vehicle-to-everything (V2X) communication.

[0047] Here, the above user equipment can be regarded as the terminal device in the following embodiments.

[0048] In some embodiments, the above wireless communication system may further include a network management device 130.

[0049] Some base stations 120 are each connected to a network management device 130. Here, the network management device 130 may be a core network device in a wireless communication system. For example, the network management device 130 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the network management device may be other core network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The embodiments of the present disclosure are not limited to the implementation forms of the network management device 130.

[0050] For the ease of understanding by those skilled in the art, the embodiments of the present disclosure will describe the technical solutions of the embodiments of the present disclosure with multiple embodiments in an easy-to-understand manner. Of course, as those skilled in the art will understand, the multiple embodiments provided by the embodiments of the present disclosure may be executed alone, may be executed in combination with the methods of other embodiments in the embodiments of the present disclosure, may be executed alone or in combination with some methods in other related technologies, and are not limited in the embodiments of the present disclosure.

[0051] To better understand the technical solutions disclosed in the embodiments of the present disclosure, the applicable scenarios of wireless network communication will be described below.

[0052] In one embodiment, according to the difference in the way of satellite processing signals, the information transmission mode can be divided into a transparent mode and a regeneration mode.

[0053] In one embodiment, referring to FIG. 2, a schematic diagram of performing wireless communication using the transparent mode is shown. The NTN terrestrial station transmits the signal of the base station to the satellite, and the satellite converts the signal into the satellite frequency band and then transmits it to the terminal via the satellite frequency band. The satellite only performs frequency conversion and signal amplification operations on the signal of the base station and does not perform demodulation. In this case, the base station is like a repeater.

[0054] Referring to FIG. 3, a schematic diagram of performing wireless communication using the playback mode is shown. The NTN terrestrial station transmits the signal of the base station to the satellite. After that, the satellite first demodulates and decodes the signal and then performs coding and modulation again to obtain the reproduced signal, and transmits the reproduced signal in the satellite frequency band.

[0055] Referring to Table 1, the height, orbit, and satellite coverage range of satellites in a typical NTN network are shown.

Table 1

[0056] In one embodiment, the uplink configured grant (CG) is a resource allocation method for uplink dynamic scheduling. The resources of the uplink configured grant are pre-set uplink resources that can be reused periodically. After being set for the terminal, at each subsequent periodic time, the corresponding uplink resources do not need to be instructed to the terminal by the base station again, and the terminal can directly use the uplink resources. Similarly, the downlink semi-persistent scheduling (SPS) is the same as the uplink configured grant, and the main difference between the two is that the downlink semi-persistent scheduling is used for downlink resources.

[0057] In one embodiment, for an uplink configured grant, each time the terminal transmits uplink new data in one HARQ process, it starts a configured grant timer corresponding to the HARQ process. While the configured grant timer is running, other new data in the HARQ process is not schedulable. A cg-RetransmissionTimer can be set for each configured grant for uplink automatic retransmission. Each time the terminal transmits uplink new data or retransmission data in one HARQ process, it starts the cg-RetransmissionTimer corresponding to the HARQ process. While the timer is running, uplink automatic retransmission is not performed. After the operation of the timer stops, uplink automatic retransmission is started. In the related art, the cg-RetransmissionTimer is applicable only when the terminal selects the HARQ identifier corresponding to the configured grant by itself.

[0058] In one embodiment, for DRX transmission, a drx-HARQ-RTT-TimerUL is used to indicate the minimum time interval during which the terminal can receive uplink retransmission scheduling after uplink transmission. It is started each time the terminal transmits uplink data. After the timer operation ends, a drx-RetransmissionTimer is started. While the drx-RetransmissionTimer is running, the terminal monitors dynamic scheduling for uplink retransmission by the base station. Similarly, DownlinkThe discontinuous reception hybrid automatic repeat request round trip time timer is used to indicate the minimum time interval during which the terminal can receive downlink retransmission scheduling after transmitting the uplink feedback of downlink data. The terminal is activated each time it transmits the uplink HARQ feedback of downlink data, and after the timer operation ends, the downlink discontinuous reception retransmission timer is activated. While the downlink discontinuous reception retransmission timer is operating, the terminal monitors the dynamic scheduling for downlink retransmissions by the base station.

[0059] In one embodiment, in NTN, the HARQ feedback function can be enabled or disabled. When the HARQ feedback function is disabled, after the transmitting side transmits data, the receiving side does not perform HARQ feedback. At the same time, in NTN, the blind retransmission function for HARQ with the feedback function is enabled, and after enabling, the transmitting side automatically performs one or more blind retransmissions on the data.

[0060] In one embodiment, for an uplink configured grant, when HARQ retransmissions used for data transmission are prohibited, the terminal does not activate the uplink discontinuous reception hybrid automatic repeat request round trip time timer or sets its value to 0, and then activates the uplink discontinuous reception retransmission timer. However, after the terminal transmits uplink data using the uplink configured grant, when the round trip time has elapsed and the network receives the uplink data, the network can determine that there is an uplink transmission and appropriately dynamically schedule retransmissions. Therefore, the network can only transmit retransmission scheduling after the round trip time, and thus the timing for activating the current uplink discontinuous reception retransmission timer is not appropriate.

[0061] It is unclear when a terminal activates a discontinuous reception hybrid automatic repeat request round trip time timer or a discontinuous reception retransmission timer for uplink / downlink transmission scheduled by a physical downlink control channel (PDCCH) and downlink transmission using a configured downlink allocation.

[0062] As shown in FIG. 4, in this embodiment, a method for activating a DRX timer is provided. The method is executed by a terminal and includes the following step 41.

[0063] In step 41, a discontinuous reception (DRX) timer is activated based on the transmission type of uplink transmission and / or downlink transmission.

[0064] Here, the terminal includes, but is not limited to, a mobile phone, a wearable device, an in-vehicle terminal, a roadside unit (RSU), a smart home terminal, an industrial sensing device, or a medical device, etc.

[0065] Here, the base station may be various types of base stations. For example, it may be a base station of a 3rd generation mobile communication (3G) network, a base station of a 4th generation mobile communication (4G) network, a base station of a 5th generation mobile communication (5G) network, or other evolved base stations.

[0066] Here, the transmission type is uplink transmission based on a configured grant (CG), uplink transmission based on physical downlink control channel (PDCCH) dynamic scheduling, downlink transmission based on PDCCH dynamic scheduling, downlink transmission based on a configured downlink allocation, and includes one of them.

[0067] In one embodiment, when the configured grant is that the base station activates an uplink grant for the terminal once, if the terminal has not received deactivation, the terminal always performs uplink transmission using the resources specified by the first uplink grant. In one embodiment, the configured grant includes a first type and a second type. Here, the first type is set through upper layer signaling by radio resource control (RRC), and the second type is instructed to activate and deactivate the configured grant by downlink control information (DCI), and is used only when activated. Here, the realization of the configured downlink allocation corresponds to the configured grant. However, the configured downlink allocation is used for downlink transmission.

[0068] In one embodiment, for uplink PDCCH dynamic scheduling, when the terminal needs to transmit uplink data, the terminal may need to send a scheduling request to the base station to notify the network that it needs to transmit data on the logical channel. After receiving the scheduling request, the base station sends an uplink scheduling grant to the terminal according to the resource status of the network. After obtaining the corresponding uplink scheduling grant, the terminal sends a buffer status report to the base station to notify the base station that there is data that needs to be transmitted. The base station allocates terminal resources according to the buffer status report information and in line with the overall network situation, and sends it to the terminal by the uplink scheduling grant of the PDCCH. Here, the downlink PDCCH dynamic scheduling corresponds to the uplink PDCCH dynamic scheduling. However, the downlink PDCCH dynamic scheduling is used for receiving downlink data.

[0069] In one embodiment, the DRX timer is A discontinuous reception hybrid automatic repeat request round trip time timer, and includes at least one of a discontinuous reception retransmission timer.

[0070] In one embodiment, starting the DRX timer may be an operation of starting the DRX timer, and the operation of starting the DRX timer may be initializing the period of the DRX timer, updating the period of the DRX timer, and / or starting the DRX timer after a predetermined time duration, but is not limited thereto.

[0071] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses uplink transmission based on a configured grant (CG), the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time duration (where the predetermined time duration may be an offset value Offset). After the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time duration may be the round-trip time (RTT) between the terminal and the base station.

[0072] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if the HARQ used for the transmission is prohibited, or if the blind retransmission of HARQ is permitted (i.e., HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the network is set to increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer by a predetermined time length, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time length. After the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0073] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if the HARQ used for the transmission is prohibited, or if the blind retransmission of HARQ is permitted (i.e., HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value (for example, the predetermined value is 0) by the network, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to the predetermined value. After a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0074] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if the HARQ used for transmission is prohibited, or if blind retransmission of HARQ is permitted (i.e., HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value (for example, the predetermined value is 0) by the network, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to the predetermined value. After the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the timing period of the uplink discontinuous reception retransmission timer is increased by a predetermined time length, and the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0075] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value, the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited. After a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0076] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited. After the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited, the timing period of the uplink discontinuous reception retransmission timer is increased by a predetermined time length, and the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0077] Here, after the time point when the terminal uses the uplink transmission based on the configured grant (CG), it may be after the first orthogonal frequency division multiplexing (OFDM) symbol after the first retransmission of the uplink transmission, or after the first OFDM symbol after the uplink transmission ends.

[0078] In one embodiment, the transmission type of the uplink transmission is an uplink transmission based on PDCCH dynamic scheduling. After the terminal receives the uplink transmission indicated by the PDCCH, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission without the need to wait for the PUSCH decoding result) is permitted, or if the network is set to prohibit the uplink discontinuous reception hybrid automatic repeat request round trip time timer, start the uplink discontinuous reception retransmission timer after receiving the data in the PDCCH, or start the uplink discontinuous reception retransmission timer from the first orthogonal frequency division multiplexing (OFDM) symbol after the uplink transmission ends, or start the uplink discontinuous reception retransmission timer from the start OFDM symbol of the uplink transmission, or start the uplink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of the uplink transmission, or start the uplink discontinuous reception retransmission timer after generating the corresponding PUSCH data packet based on the PDCCH instruction, or start the uplink discontinuous reception retransmission timer after the processing delay after receiving the PDCCH data. In one embodiment, the processing delay may be the uplink PUSCH processing delay. In another embodiment, the processing delay may be the maximum uplink PUSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further uplink scheduling for the HARQ process within the uplink PUSCH processing delay after the network performs uplink scheduling for the same HARQ process.

[0079] In one embodiment, the transmission type of uplink transmission is uplink transmission based on PDCCH dynamic scheduling. After the terminal receives the uplink transmission indicated by the PDCCH, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission that does not require waiting for the PUSCH decoding result) is permitted, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip timer is set to a predetermined value by the network, start the uplink discontinuous reception hybrid automatic repeat request round trip timer after receiving the data in the PDCCH, or start the uplink discontinuous reception hybrid automatic repeat request round trip timer from the first OFDM symbol after the end of the uplink transmission, or start the uplink discontinuous reception hybrid automatic repeat request round trip timer from the start OFDM symbol of the uplink transmission, or start the uplink discontinuous reception hybrid automatic repeat request round trip timer from the first OFDM symbol after the first retransmission of the uplink transmission, or start the uplink discontinuous reception hybrid automatic repeat request round trip timer after generating the corresponding PUSCH data packet based on the PDCCH instruction, or start the uplink discontinuous reception hybrid automatic repeat request round trip timer after the processing delay after the PDCCH is received. In one embodiment, the processing delay may be the uplink PUSCH processing delay. In another embodiment, the processing delay may be the maximum uplink PUSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further scheduling of the HARQ process within the uplink PUSCH processing delay after the network performs uplink scheduling for the same HARQ process.

[0080] In one embodiment, the transmission type of downlink transmission is downlink transmission based on PDCCH dynamic scheduling. After the terminal receives the downlink transmission indicated by the PDCCH, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission that does not require waiting for ACK / NACK feedback) is permitted, or if the network is set to prohibit the downlink discontinuous reception hybrid automatic repeat request round trip time timer, start the downlink discontinuous reception retransmission timer after receiving the data in the PDCCH, or start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of the downlink transmission, or start the downlink discontinuous reception retransmission timer from the start OFDM symbol of the downlink transmission, or start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of the downlink transmission, or start the downlink discontinuous reception retransmission timer after the processing delay after receiving the PDCCH. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further downlink scheduling for the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0081] In one embodiment, the transmission type of downlink transmission is downlink transmission based on PDCCH dynamic scheduling. After the terminal receives the downlink transmission indicated by the PDCCH, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission that does not require waiting for ACK / NACK feedback) is permitted, or if the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip timer is set to a predetermined value by the network, start the downlink discontinuous reception hybrid automatic repeat request round trip timer after receiving the data in the PDCCH, or start the downlink discontinuous reception hybrid automatic repeat request round trip timer from the first OFDM symbol after the end of the downlink transmission, or start the downlink discontinuous reception hybrid automatic repeat request round trip timer from the start OFDM symbol of the downlink transmission, or start the downlink discontinuous reception hybrid automatic repeat request round trip timer from the first OFDM symbol after the first retransmission of the downlink transmission, or start the downlink discontinuous reception hybrid automatic repeat request round trip timer after the processing delay after receiving the PDCCH. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further downlink scheduling for the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0082] In one embodiment, the transmission type of downlink transmission is downlink transmission based on configured downlink allocation. After the terminal receives downlink transmission using configured downlink allocation, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission that does not require waiting for ACK / NACK feedback) is permitted, or if the network is set to prohibit the downlink discontinuous reception hybrid automatic repeat request round trip time timer, start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of downlink transmission, or start the downlink discontinuous reception retransmission timer from the start OFDM symbol of downlink transmission, or start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of downlink transmission, or start the downlink discontinuous reception retransmission timer after the processing delay after PDSCH is received. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive further downlink scheduling for the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0083] In one embodiment, the transmission type of downlink transmission is downlink transmission based on configured downlink allocation. After the terminal receives downlink transmission using configured downlink allocation, if HARQ retransmission is prohibited, or if blind retransmission of HARQ (for example, blind retransmission that does not require waiting for ACK / NACK feedback) is permitted, or if the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, the downlink discontinuous reception hybrid automatic repeat request round trip time timer is started from the first OFDM symbol after the end of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip time timer is started from the start OFDM symbol of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip time timer is started from the first OFDM symbol after the first retransmission of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip time timer is started after the processing delay after PDSCH is received. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive further downlink scheduling of the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0084] In an embodiment of the present disclosure, a discontinuous reception (DRX) timer is started based on the transmission type of uplink transmission and / or downlink transmission. Here, the operation of starting the discontinuous reception (DRX) timer can be determined based on the transmission type of uplink transmission and / or downlink transmission. Compared with always starting the DRX timer in a fixed manner, the operation of starting the discontinuous reception (DRX) timer can adapt to the transmission type of uplink transmission and / or downlink transmission. In this way, the setting of the DRX timer can be adapted to the transmission type, and in this way, the timing of the DRX timer can be made more accurate, thereby further improving the reliability of discontinuous reception (DRX).

[0085] It should be understood by those skilled in the art that the method provided by the embodiment of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0086] As shown in FIG. 5, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following steps 51 to 52.

[0087] In step 51, it is determined that the transmission type of the uplink transmission is an uplink transmission based on CG.

[0088] In step 52, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time length.

[0089] In one embodiment, in response to determining that the transmission type of the uplink transmission is an uplink transmission based on CG, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time length.

[0090] Here, the predetermined time length may be the offset value Offset. In one embodiment, the possible value of the predetermined time length may be the round-trip time between the terminal and the base station. Here, increasing by the predetermined time length may be increasing by the predetermined time length based on the initial setting time length of the timing period.

[0091] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0092] As shown in FIG. 6, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following step 61.

[0093] In step 61, when HARQ retransmission is prohibited, increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by a predetermined time length, or when blind retransmission of HARQ is permitted, increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by a predetermined time length, or when it is set that the network increases the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by a predetermined time length, increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer by a predetermined time length.

[0094] Here, the permission of blind retransmission may mean that when the transmitting side does not receive the hybrid automatic repeat request feedback from the receiving side, the operation of automatically retransmitting information to the receiving side is permitted. In one embodiment, the base station may transmit the configuration information of blind retransmission to the terminal. The configuration information includes, but is not limited to, the time interval of blind retransmission, the number of blind retransmissions, and the time window of blind retransmission. The terminal can perform blind retransmission communication with the base station based on the configuration information.

[0095] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0096] As shown in FIG. 7, in this embodiment, a method for starting a DRX timer is provided. The method is executed by a terminal and includes the following steps 71 to 72.

[0097] In step 71, start an uplink discontinuous reception hybrid automatic repeat request round trip time timer.

[0098] In step 72, when the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, start an uplink discontinuous reception retransmission timer.

[0099] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time length (where the predetermined time length may be an offset value Offset). After the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0100] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if the HARQ used for transmission is prohibited, or if blind retransmission of HARQ is permitted (that is, HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the network is set to increase the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer by a predetermined time length, the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is increased by a predetermined time length. After the uplink discontinuous reception hybrid automatic repeat request round trip time timer expires, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round trip time between the terminal and the base station.

[0101] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0102] As shown in FIG. 8, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following steps 81 to 82.

[0103] In step 81, it is determined that the transmission type of the uplink transmission is a CG-based uplink transmission.

[0104] In step 82, the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to a predetermined value.

[0105] In one embodiment, in response to determining that the transmission type of the uplink transmission is a CG-based uplink transmission, the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to a predetermined value.

[0106] Here, the predetermined value may be 0.

[0107] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0108] As shown in FIG. 9, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following step 91.

[0109] In step 91, when HARQ retransmission is prohibited, set the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to a predetermined value, or, when blind retransmission of HARQ is permitted, set the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to a predetermined value, or, when the network sets the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to a predetermined value, set the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer to a predetermined value.

[0110] Here, the permission of blind retransmission may mean that when the transmitting side does not receive the hybrid automatic repeat request feedback from the receiving side, the operation of automatically retransmitting information to the receiving side is permitted. In one embodiment, the base station may transmit the setting information of blind retransmission to the terminal, and the setting information includes, but is not limited to, the time interval of blind retransmission, the number of times of blind retransmission, and the time window of blind retransmission. The terminal can perform blind retransmission communication with the base station based on the setting information.

[0111] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0112] As shown in FIG. 10, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following steps 101 to 102.

[0113] In step 101, start the uplink discontinuous reception hybrid automatic repeat request round trip time timer.

[0114] In step 102, after a predetermined time period after the uplink discontinuous reception hybrid automatic repeat request round-trip timer expires, start the uplink discontinuous reception retransmission timer, or after the uplink discontinuous reception hybrid automatic repeat request round-trip timer expires, increase the timing period of the uplink discontinuous reception retransmission timer by a predetermined time period and start the uplink discontinuous reception retransmission timer.

[0115] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses uplink transmission based on a configured grant (CG), if the HARQ used for the transmission is prohibited, or if blind retransmission of HARQ is permitted (that is, HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the network sets the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip timer to a predetermined value (for example, the predetermined value is 0), set the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip timer to the predetermined value. After a predetermined time period after the uplink discontinuous reception hybrid automatic repeat request round-trip timer expires, start the uplink discontinuous reception retransmission timer. Here, the possible value of the predetermined time period may be the round-trip time between the terminal and the base station.

[0116] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if the HARQ used for transmission is prohibited, or if blind retransmission of HARQ is permitted (i.e., HARQ can perform blind retransmission without waiting for the PUSCH decoding result), or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to a predetermined value (for example, the predetermined value is 0) by the network, the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to the predetermined value. After the uplink discontinuous reception hybrid automatic repeat request round-trip time timer expires, the timing period of the uplink discontinuous reception retransmission timer is increased by a predetermined time length, and the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round-trip time between the terminal and the base station.

[0117] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0118] As shown in FIG. 11, in this embodiment, a method for starting a DRX timer is provided. The method is executed by a terminal and includes the following steps 111 to 112.

[0119] In step 111, it is determined that the transmission type of the uplink transmission is uplink transmission based on CG.

[0120] In step 112, the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited.

[0121] In one embodiment, in response to determining that the transmission type of the uplink transmission is uplink transmission based on CG, the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited.

[0122] In one embodiment, if the HARQ retransmission used for the transmission is prohibited, the terminal prohibits the uplink discontinuous reception hybrid automatic repeat request round-trip time timer UL.

[0123] Note that in NTN, the terminal and the base station communicate with an aerial device such as a satellite. Since the satellite is usually located at a high position, there is a large delay in satellite communication, which affects the process in which the receiving side transmits a hybrid automatic repeat request feedback to the transmitting side. Therefore, at this time, it may be prohibited for the receiving side to transmit a hybrid automatic repeat request feedback to the transmitting side.

[0124] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0125] As shown in FIG. 12, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following step 121.

[0126] In step 121, if the HARQ retransmission is prohibited, the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited, or if the blind retransmission of HARQ is permitted, the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is set to a predetermined value by the network, the uplink discontinuous reception hybrid automatic repeat request round-trip time timer is prohibited.

[0127] Here, the permission of blind retransmission may mean that when the transmitting side does not receive the hybrid automatic repeat request feedback from the receiving side, the operation of automatically retransmitting information to the receiving side is permitted. In one embodiment, the base station may transmit the configuration information of blind retransmission to the terminal, and the configuration information includes, but is not limited to, the time interval of blind retransmission, the number of times of blind retransmission, and the time window of blind retransmission. The terminal can perform blind retransmission communication with the base station based on the configuration information.

[0128] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0129] As shown in FIG. 13, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following step 131.

[0130] In step 131, after a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited, start the uplink discontinuous reception retransmission timer, or after the uplink discontinuous reception hybrid automatic repeat request round trip time timer is prohibited, increase the timing period of the uplink discontinuous reception retransmission timer by a predetermined time length, and start the uplink discontinuous reception retransmission timer.

[0131] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip timer is set to a predetermined value by the network, the uplink discontinuous reception hybrid automatic repeat request round-trip timer is prohibited. After a predetermined time length after the uplink discontinuous reception hybrid automatic repeat request round-trip timer is prohibited, the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round-trip time between the terminal and the base station.

[0132] In one embodiment, the transmission type of the uplink transmission is uplink transmission based on a configured grant (CG). After the terminal uses the uplink transmission based on the configured grant (CG), if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the timing period of the uplink discontinuous reception hybrid automatic repeat request round-trip timer is set to a predetermined value by the network, the uplink discontinuous reception hybrid automatic repeat request round-trip timer is prohibited. After the uplink discontinuous reception hybrid automatic repeat request round-trip timer is prohibited, the timing period of the uplink discontinuous reception retransmission timer is increased by a predetermined time length, and the uplink discontinuous reception retransmission timer is started. Here, the possible value of the predetermined time length may be the round-trip time between the terminal and the base station.

[0133] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0134] As shown in FIG. 14, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following steps 141 to 142.

[0135] In step 141, it is determined that the transmission type of the uplink transmission is an uplink transmission based on PDCCH dynamic scheduling.

[0136] In step 142, the uplink discontinuous reception retransmission timer and / or the uplink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method.

[0137] In one embodiment, in response to determining that the transmission type of the uplink transmission is an uplink transmission based on PDCCH dynamic scheduling, the uplink discontinuous reception retransmission timer and / or the uplink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method.

[0138] In one embodiment, when HARQ retransmission is prohibited, or when blind retransmission of HARQ is permitted, or when the network is set to prohibit the uplink discontinuous reception hybrid automatic repeat request round trip time timer, the uplink discontinuous reception retransmission timer is started according to a predetermined processing method. In one embodiment, the predetermined processing method includes a method of starting the uplink discontinuous reception retransmission timer after data in the PDCCH is received, or a method of starting the uplink discontinuous reception retransmission timer from the first orthogonal frequency division multiplexing (OFDM) symbol after the end of the uplink transmission, or a method of starting the uplink discontinuous reception retransmission timer from the start OFDM symbol of the uplink transmission, or a method of starting the uplink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of the uplink transmission, or a method of starting the uplink discontinuous reception retransmission timer after generating the corresponding PUSCH data packet based on the PDCCH instruction, or a method of starting the uplink discontinuous reception retransmission timer after the processing delay after the PDCCH data is received. In one embodiment, the processing delay may be the uplink PUSCH processing delay. In another embodiment, the processing delay may be the maximum uplink PUSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further uplink scheduling for the HARQ process within the uplink PUSCH processing delay after the network performs uplink scheduling for the same HARQ process.

[0139] In one embodiment, when HARQ retransmission is prohibited, or when HARQ blind retransmission is permitted, or when the timing period of the uplink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, the uplink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method. The predetermined processing method includes a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after data in the PDCCH is received, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the end of uplink transmission, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the start OFDM symbol of uplink transmission, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the first retransmission of uplink transmission, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after generating a corresponding PUSCH data packet based on a PDCCH instruction, or a method of starting the uplink discontinuous reception hybrid automatic repeat request round trip time timer after a processing delay after the PDCCH is received. In one embodiment, the processing delay may be an uplink PUSCH processing delay. In another embodiment, the processing delay may be the maximum uplink PUSCH processing delay defined by the system. In one embodiment, the terminal does not receive further uplink scheduling for the HARQ process within the uplink PUSCH processing delay after the network performs uplink scheduling for the same HARQ process.

[0140] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0141] As shown in FIG. 15, in this embodiment, a method for starting a DRX timer is provided. Here, the method is executed by a terminal, and the method includes the following steps 151 to 152.

[0142] In step 151, it is determined that the transmission type of the downlink transmission is a downlink transmission based on PDCCH dynamic scheduling.

[0143] In step 152, a downlink discontinuous reception retransmission timer and / or a downlink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method.

[0144] In one embodiment, in response to determining that the transmission type of the downlink transmission is a downlink transmission based on PDCCH dynamic scheduling, a downlink discontinuous reception retransmission timer and / or a downlink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method.

[0145] In one embodiment, when HARQ retransmission is prohibited, or when HARQ blind retransmission is permitted, or when the network is set to prohibit the downlink discontinuous reception hybrid automatic repeat request round trip time timer, the uplink discontinuous reception retransmission timer is started according to a predetermined processing method. The predetermined processing method includes a method of starting the downlink discontinuous reception retransmission timer after data in the PDCCH is received, or a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the start OFDM symbol of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of downlink transmission, or a method of starting the downlink discontinuous reception retransmission timer after the processing delay after the PDCCH is received. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive further downlink scheduling of the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0146] In one embodiment, when HARQ retransmission is prohibited, or when HARQ blind retransmission is permitted, or when the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip time timer is set to a predetermined value by the network, the downlink discontinuous reception hybrid automatic repeat request round trip time timer is started according to a predetermined processing method. The predetermined processing method includes a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer after data in the PDCCH is received, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the end of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the start OFDM symbol of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer from the first OFDM symbol after the first retransmission of downlink transmission, or a method of starting the downlink discontinuous reception hybrid automatic repeat request round trip time timer after the processing delay after the PDCCH is received. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further downlink scheduling of the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0147] As can be understood by those skilled in the art, the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0148] As shown in FIG. 16, in this embodiment, a method for starting a DRX timer is provided, where the method is executed by a terminal, and the method includes the following steps 161 to 162.

[0149] In step 161, it is determined that the transmission type of the downlink transmission is a downlink transmission based on a configured downlink allocation.

[0150] In step 162, start a downlink discontinuous reception retransmission timer and / or a downlink discontinuous reception hybrid automatic repeat request round-trip time timer according to a predetermined processing method.

[0151] In one embodiment, the transmission type of the downlink transmission is a downlink transmission based on a configured downlink allocation. After the terminal receives a downlink transmission using a configured downlink allocation, if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the network is set to prohibit the downlink discontinuous reception hybrid automatic repeat request round-trip time timer, start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the end of the downlink transmission, or start the downlink discontinuous reception retransmission timer from the start OFDM symbol of the downlink transmission, or start the downlink discontinuous reception retransmission timer from the first OFDM symbol after the first retransmission of the downlink transmission, or start the downlink discontinuous reception retransmission timer after the processing delay after the PDSCH is received. In one embodiment, the processing delay may be a downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive any further downlink scheduling for the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0152] In one embodiment, the transmission type of downlink transmission is downlink transmission based on configured downlink allocation. After the terminal receives downlink transmission using configured downlink allocation, if HARQ retransmission is prohibited, or if blind retransmission of HARQ is permitted, or if the timing period of the downlink discontinuous reception hybrid automatic repeat request round trip timer is set to a predetermined value by the network, the downlink discontinuous reception hybrid automatic repeat request round trip timer is started from the first OFDM symbol after the end of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip timer is started from the start OFDM symbol of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip timer is started from the first OFDM symbol after the first retransmission of downlink transmission, or the downlink discontinuous reception hybrid automatic repeat request round trip timer is started after the processing delay after PDSCH is received. In one embodiment, the processing delay may be the downlink PDSCH processing delay. In another embodiment, the processing delay may be the maximum downlink PDSCH processing delay defined by the system. In one embodiment, the terminal does not receive further downlink scheduling of the HARQ process within the downlink PDSCH processing delay after the network performs downlink scheduling for the same HARQ process.

[0153] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone, or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0154] As shown in FIG. 17, in this embodiment, a DRX timer startup device is provided, and the device includes a processing module 171 for starting a discontinuous reception (DRX) timer based on the transmission type of uplink transmission and / or downlink transmission.

[0155] It should be understood by those skilled in the art that the method provided by the embodiments of the present disclosure may be executed alone or may be executed together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0156] Embodiments of the present disclosure provide a communication device, and the communication device includes a processor, and a memory for storing instructions executable by the processor. Here, when the processor executes the executable instructions, it is configured to implement the method applicable to any embodiment of the present disclosure.

[0157] Here, the processor can include various types of storage media, and the storage media is a non-transitory computer storage media, and can continue to store its information even after the communication device loses power.

[0158] The processor may be connected to the memory via a bus or the like and is used to read the executable program stored in the memory.

[0159] Embodiments of the present disclosure further provide a computer storage medium, where a computer-executable program is stored in the computer storage medium, and when the executable program is executed by a processor, the method of any embodiment of the present disclosure is implemented.

[0160] Regarding the device in the above embodiments, the specific method for each module to execute operations has been described in detail in the embodiments related to the method, and the detailed description is omitted here.

[0161] As shown in FIG. 18, it is the structure of a terminal provided by an embodiment of the present disclosure.

[0162] Referring to FIG. 18, there is provided a terminal 800 according to this embodiment. Specifically, the terminal may be, for example, a mobile phone, a computer, a digital broadcast terminal, a message sending and receiving device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0163] Referring to FIG. 18, the terminal 800 can include at least one component among a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 314, and a communication component 816.

[0164] The processing component 802 generally controls the overall operations of the device 800, such as operations related to display, telephone calls, data communication, camera operations, and recording operations. The processing component 802 can execute instructions by including at least one processor 820 to complete all or some of the steps of the above methods. Also, the processing component 802 can include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0165] Memory 804 is configured to support the operation of device 800 by storing various types of data. Examples of such data include instructions of any application program or method operated in device 800, contact data, phone book data, messages, photos, videos, and the like. Memory 804 can be implemented with 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.

[0166] Power component 806 provides power to various components of device 800. Power component 806 can include a power management system, one or more power supplies, and other components related to the generation, management, and distribution of power to device 800.

[0167] The multimedia component 808 includes a screen that provides one output interface between the device 800 and the user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). When the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to detect touches, swipes, and gestures on the touch panel. The touch sensor detects not only the boundaries of the touch or swipe operation, but also the wake-up time and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes one front camera and / or rear camera. When the device 800 is in an operation mode such as a shooting mode or a video mode, the front camera and / or rear camera can receive external multimedia data. Each front camera and rear camera may have a fixed optical lens system or one with a focal length and an optical zoom function.

[0168] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes one microphone (MIC). When the device 800 is in an operation mode such as a calling mode, a recording mode, or a voice recognition mode, the microphone is configured to receive external audio signals. The received audio signals can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes one speaker for outputting audio signals.

[0169] The I / O interface 812 provides an interface between the processing component 802 and a peripheral interface module, and the peripheral interface module may be, for example, a keyboard, click wheel, buttons, etc. These buttons include, but are not limited to, a home page button, volume buttons, a power button, and a lock button.

[0170] The sensor component 814 includes one or more sensors for providing a status assessment of various aspects for the device 800. For example, the sensor component 814 can detect the on / off state of the device 800, the relative positioning of components. For example, the components are the display and keypad of the device 800, and the sensor component 814 can further detect a change in the position of the device 800 or one component of the device 800, whether there is contact between the user and the device 800, the orientation or acceleration / deceleration of the device 800, and a change in the temperature of the device 800. The sensor component 814 may include a proximity sensor configured to detect whether an object is present in the vicinity without any physical contact. The sensor component 814 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 814 may further include an acceleration sensor, gyro sensor, magnetic sensor, pressure sensor, or temperature sensor.

[0171] The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In one exemplary embodiment, the communication component 816 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 816 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.

[0172] In an exemplary embodiment, the device 800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field-Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements to execute the above method.

[0173] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions is further provided, such as a memory 804 containing instructions, and the above instructions can be executed by a processor 820 of the device 800 to terminate the above method. For example, the non-transitory computer-readable storage medium may be a ROM, Random Access Memory (RAM), CD-ROM, tape, floppy disk, and optical data storage device, etc.

[0174] As shown in FIG. 19, the structure of a base station is shown in an embodiment of the present disclosure. For example, the base station 900 can be provided as a network-side device. Referring to FIG. 19, the base station 900 includes a processing component 922 including one or more processors, and a memory resource represented by a memory 932 for storing instructions executable by the processing component 922, such as application programs. The application programs stored in the memory 932 can each include one or more modules corresponding to a set of instructions. Further, the processing component 922 is configured to execute instructions so as to execute any method described in the above method and applied to the base station.

[0175] The apparatus 900 may further include a power component 926 configured to perform power management of the apparatus 900, a wired or wireless network interface 950 configured to connect the apparatus 900 to a network, and an input / output (I / O) interface 958. The apparatus 900 can operate an operating system stored in the memory 932, such as Windows Server TM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or a similar system.

[0176] After considering the specification and practicing the invention disclosed herein, those skilled in the art can easily conceive of other embodiments of the present disclosure. This application intends to cover any modifications, uses or adaptations of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common general knowledge in the art or commonly used technical means not disclosed in the present disclosure. The specification and examples are to be regarded as merely illustrative, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0177] It should be understood that the present disclosure is not limited to the exact structure described above and shown in the drawings, and various modifications and changes are possible without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. 1. A method for starting a discontinuous reception (DRX) timer, the method being performed by a terminal, the method comprising: starting a DRX timer based on a transmission type of an uplink transmission and / or a downlink transmission; The transmission type is uplink transmission based on a configured grant (CG); an uplink transmission based on a physical downlink control channel (PDCCH) dynamic scheduling; and downlink transmission based on the configured downlink assignment; The method comprises: determining that a transmission type of the uplink transmission is a CG-based uplink transmission; and increasing a timing period of an uplink discontinuous reception hybrid automatic repeat request round trip time timer by a predetermined amount of time. How to start the DRX timer.

2. The method comprises: determining that a transmission type of the uplink transmission is an uplink transmission based on PDCCH dynamic scheduling; Starting the discontinuous reception (DRX) timer includes: starting an uplink discontinuous reception retransmission timer and / or an uplink discontinuous reception hybrid automatic repeat request round trip time timer according to a predetermined processing scheme; The method for starting a DRX timer according to claim 1 .

3. The predetermined processing method is: starting the uplink discontinuous reception retransmission timer after data on the PDCCH is received; or starting the uplink discontinuous reception retransmission timer from the first orthogonal frequency division multiplexing (OFDM) symbol after the end of the uplink transmission; or starting the uplink discontinuous reception retransmission timer from the first OFDM symbol of the uplink transmission; or starting the uplink discontinuous reception retransmission timer from the first OFDM symbol after a first retransmission of an uplink transmission; or starting the uplink discontinuous reception retransmission timer after generating a corresponding PUSCH data packet based on the PDCCH indication; or starting the uplink discontinuous reception retransmission timer after a processing delay after PDCCH data is received. The method for starting a DRX timer according to claim 2.

4. 1. A communications device, comprising: Memory, A processor coupled to said memory and configured to execute computer executable instructions stored in said memory to implement the method according to any one of claims 1 to 3. Communication devices.

5. A computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 3. Computer program.

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