A method and apparatus for reference signal transmission and reception

Abstract

A method and apparatus for transmitting and receiving a reference signal, the method comprising: receiving, by a terminal device, first information from a network device, the first information being used to configure a resource at which the terminal device is capable of transmitting a reference signal; determining, by the terminal device, that the resource is in a discontinuous reception (DRX) inactive time; and transmitting, by the terminal device, the reference signal based on the resource. The method ensures uninterrupted uplink transmission when the terminal device is not woken up for a long time.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a method and apparatus for transmitting and receiving reference signals. Background Technology

[0002] The wake-up signal (WUS) is configured before the Discontinuous Reception On Duration (DRX On Duration) to indicate whether the user equipment (UE) needs to be woken up to listen to the physical downlink control channel (PDCCH) in the next one or more DRX cycles. When WUS is configured, if WUS indicates that the UE should not be woken up, or if the UE does not detect WUS and thus determines not to wake up, the UE will not start the DRX-onDurationTimer. If the base station indicates that the UE should not be woken up for multiple consecutive WUS signals, the UE will not start the DRX-onDurationTimer for multiple consecutive DRX cycles, thus failing to enter the DRX active time. Therefore, the UE will remain unwakeable for an extended period, potentially causing uplink interruption. Summary of the Invention

[0003] This application provides a method and apparatus for transmitting and receiving reference signals to solve the problem that uplink interruption may occur when a UE is not woken up for a long time.

[0004] This application provides a method and apparatus for transmitting and receiving reference signals to solve the problem that uplink interruption may occur when a UE is not woken up for a long time.

[0005] In a first aspect, this application provides a reference signal transmission method, the method comprising: a terminal device receiving first information from a network device; the first information being used to configure resources for which the terminal device can transmit reference signals; the terminal device determining that the resources are in a discontinuous reception DRX inactive time, and transmitting reference signals based on the resources.

[0006] Using the above method, the terminal device receives the first information, and when it determines that the resource configured in the first information is in the DRX inactive time, it sends a reference signal based on the resource. Therefore, even if the terminal device is not woken up for a long time, the uplink can still be guaranteed to be uninterrupted.

[0007] In one possible design, the terminal device detects a wake-up signal from the network device; if the wake-up signal is not detected and the terminal device determines not to wake up, or if the wake-up signal is detected and the wake-up signal indicates not to wake up, the terminal device sends a reference signal based on the resource.

[0008] With the above design, when the terminal device determines that it is not being woken up based on the wake-up signal, it sends a reference signal based on the resources.

[0009] In one possible design, the terminal device further includes: determining that the resource is in the DRX activation period, and sending a reference signal based on the resource.

[0010] With the above design, when the terminal device determines that the resource is in the DRX active time, it sends a reference signal based on the resource. Therefore, regardless of whether the resource is in the DRX active time or the DRX inactive time, the terminal device sends a reference signal based on the resource.

[0011] In one possible design, the resource is a time window; the terminal device determines that the time window is during the DRX inactive period, and the terminal device sends the reference signal within the time window.

[0012] In the above design, the resource is a time window, and the terminal device sends the reference signal within the time window.

[0013] In one possible design, the time window is the DRX duration, or a period of time within the DRX duration, or a period of time before the DRX duration.

[0014] Using the above design, the time window can include a variety of possible forms.

[0015] In one possible design, the method further includes: the terminal device receiving third information from the network device, the third information being used to configure a second reference signal resource configured for the time window; and the terminal device transmitting the reference signal on the second reference signal resource within the time window.

[0016] With the above design, the network device configures a second reference signal resource for the terminal device for a time window, and the terminal device transmits a reference signal on the second reference signal resource within the time window.

[0017] In one possible design, the resource is a first reference signal resource; the terminal device determines that the time domain position corresponding to the resource is in the DRX inactive time, and the terminal device transmits the reference signal on the first reference signal resource.

[0018] Using the above design, the resource is a first reference signal resource; the terminal device transmits the reference signal on the first reference signal resource.

[0019] In one possible design, the terminal device further includes: receiving fourth information from a network device, the fourth information being used to configure a third reference signal resource; if the wake-up signal is not detected and the terminal device determines to wake up, or if the wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, the terminal device transmits the reference signal on the third reference signal resource.

[0020] With the above design, the network device is configured with two sets of reference signal resources for the terminal device. The terminal device uses different reference signal resources to send reference signals when it is woken up or not.

[0021] In one possible design, the frequency domain resources corresponding to the first reference signal resource and the third reference signal resource are the same, but the period of the first reference signal resource and the period of the third reference signal resource are different.

[0022] Using the above design, the two sets of reference signal resources can have different periods and the same frequency domain resources.

[0023] In one possible design, the method further includes: the terminal device receiving second information from the network device, the second information indicating a first duration, the first duration being the duration during which the terminal device has been continuously not woken up; the terminal device determining that the first duration has been reached; and the terminal device sending the reference signal on the resource.

[0024] With the above design, the network device is configured to send a reference signal on the resource when the terminal device meets the conditions.

[0025] In one possible design, the first duration is N DRX cycles, the resource is the first DRX duration after the N DRX cycles, or the resource is a time period within the first DRX duration after the N DRX cycles, or the resource is a time period before the first DRX duration after the N DRX cycles, or the resource is M reference signal resources within the first DRX duration after the N DRX cycles, or the resource is M reference signal resources before the first DRX duration after the N DRX cycles, where N and M are positive integers.

[0026] With the above design, the first duration and the resources can take many possible forms.

[0027] Secondly, this application provides a reference signal receiving method, the method comprising: a network device sending first information to a terminal device; the first information being used to configure resources for which the terminal device can transmit reference signals; the network device determining that the resources are in a DRX inactive time, and receiving reference signals from the terminal device based on the resources.

[0028] Using the above method, network devices can configure resources that enable terminal devices to send reference signals and receive reference signals based on these resources. Therefore, even if the terminal device is not woken up for a long time, the uplink can still be guaranteed to remain uninterrupted.

[0029] In one possible design, if the network device does not send the wake-up signal and determines not to wake up the terminal device, or sends the wake-up signal and the wake-up signal indicates not to wake up the terminal device, the network device receives a reference signal from the terminal device based on the resource.

[0030] With the above design, when the network device determines that the terminal device is not woken up based on the wake-up signal, it receives the reference signal based on the resources.

[0031] In one possible design, the network device further includes: determining that the resource is in a DRX active period, and receiving a reference signal from the terminal device based on the resource.

[0032] With the above design, when the network device determines that the resource is in the DRX active time, it receives a reference signal based on the resource. Therefore, regardless of whether the resource is in the DRX active time or the DRX inactive time, the network device receives a reference signal based on the resource.

[0033] In one possible design, the resource is a time window; the network device determines that the time window is during a DRX inactive period and receives the reference signal from the terminal device within the time window.

[0034] In the above design, the resource is a time window, and the network device receives the reference signal within the time window.

[0035] In one possible design, the time window is the DRX duration, or a period of time within the DRX duration, or a period of time before the DRX duration.

[0036] Using the above design, the time window can include a variety of possible forms.

[0037] In one possible design, the method further includes: the network device sending third information to the terminal device, the third information being used to configure a second reference signal resource configured for the time window; and the network device receiving the reference signal from the terminal device on the second reference signal resource within the time window.

[0038] With the above design, the network device configures a second reference signal resource for the terminal device for a time window, and the network device receives the reference signal on the second reference signal resource within the time window.

[0039] In one possible design, the resource is a first reference signal resource; the network device determines that the time domain location corresponding to the resource is in the DRX inactive time, and the network device receives the reference signal from the terminal device on the first reference signal resource.

[0040] Using the above design, the resource is a first reference signal resource; the network device receives the reference signal on the first reference signal resource.

[0041] In one possible design, the network device further includes: the network device sending fourth information to the terminal device, the fourth information being used to configure a third reference signal resource; if the network device does not send the wake-up signal and determines to wake up the terminal device, or sends the wake-up signal and the wake-up signal indicates that the terminal device should be woken up, the network device receives the reference signal from the terminal device on the third reference signal resource.

[0042] With the above design, the network device is equipped with two sets of reference signal resources for the terminal device, which are used to receive reference signals when the terminal device is woken up or not.

[0043] In one possible design, the frequency domain resources corresponding to the first reference signal resource and the third reference signal resource are the same, but the period of the first reference signal resource and the period of the third reference signal resource are different.

[0044] Using the above design, the two sets of reference signal resources can have different periods and the same frequency domain resources.

[0045] In one possible design, the method further includes: the network device sending second information to the terminal device, the second information indicating a first duration, the first duration being the duration during which the terminal device has been continuously not woken up; the network device determining that the terminal device has reached the first duration; and the network device receiving the reference signal from the terminal device on the resource.

[0046] With the above design, the network device is configured to send a reference signal on the resource when the terminal device meets the conditions.

[0047] In one possible design, the first duration is N DRX cycles, the resource is the first DRX duration after the N DRX cycles, or the resource is a time period within the first DRX duration after the N DRX cycles, or the resource is a time period before the first DRX duration after the N DRX cycles, or the resource is M reference signal resources within the first DRX duration after the N DRX cycles, or the resource is M reference signal resources before the first DRX duration after the N DRX cycles, where N and M are positive integers.

[0048] With the above design, the first duration and the resources can take many possible forms.

[0049] Thirdly, this application provides a reference signal transmission method, the method comprising: a terminal device detecting a wake-up signal from a network device, the wake-up signal indicating not to wake up the terminal device, the wake-up signal including a first information field for indicating whether the terminal device transmits a reference signal in a primary cell and / or a secondary cell; if the first information field indicates that the terminal device transmits a reference signal in the primary cell, the terminal device transmits the reference signal in the primary cell; if the first information field indicates that the terminal device transmits a reference signal in the secondary cell, the terminal device transmits the reference signal in the secondary cell; if the first information field indicates that the terminal device transmits a reference signal in both the primary cell and the secondary cell, the terminal device transmits the reference signal in both the primary cell and the secondary cell.

[0050] Using the above method, when the wake-up signal indicates that the terminal device should not be woken up, the network device can instruct the terminal device to send a reference signal in the primary cell and / or secondary cell.

[0051] In one possible design, the first information field includes at least one bit; one of the at least one bits or the state of one of the bits is used to indicate whether the terminal device transmits the reference signal in the primary cell; one of the other bits of the at least one bit or the state of one of the other bits is used to indicate whether the terminal device transmits the reference signal in the secondary cell.

[0052] Using the above design, the bits in the first information domain can be combined in various ways to instruct the terminal device to send reference signals in the primary cell and / or secondary cell.

[0053] In one possible design, the first information field is used to indicate whether the terminal device should return from a first action to a second action in the secondary cell when a wake-up signal indicates that the terminal device should be woken up, and / or whether the terminal device should return from a second action to a first action in the secondary cell. The first action refers to the terminal device listening to the PDCCH in the secondary cell; the second action refers to the terminal device ceasing to listen to the PDCCH in the secondary cell and performing background processing in the secondary cell, the background processing including at least one of the following: Channel State Information (CSI) measurement, or reporting CSI, or transmitting a reference signal in the secondary cell.

[0054] In one possible design, the first information field is further used to indicate whether the terminal device performs a third action in the primary cell and / or the secondary cell when the wake-up signal indicates not to wake up the terminal device. The third action includes at least one of the following: CSI measurement, or CSI reporting, or semi-persistent data scheduling.

[0055] With the above design, the first information domain can also be used to indicate various behaviors of the terminal device in the primary cell and / or secondary cell.

[0056] Fourthly, this application provides a reference signal receiving method, the method comprising: a network device sending a wake-up signal to a terminal device, the wake-up signal indicating that the terminal device should not be woken up, the wake-up signal including a first information field for indicating whether the terminal device transmits a reference signal in a primary cell and / or a secondary cell; if the first information field indicates that the terminal device transmits a reference signal in the primary cell, the network device receives the reference signal from the terminal device in the primary cell; if the first information field indicates that the terminal device transmits a reference signal in the secondary cell, the network device receives the reference signal from the terminal device in the secondary cell; if the first information field indicates that the terminal device transmits a reference signal in both the primary cell and the secondary cell, the network device receives the reference signal from the terminal device in both the primary cell and the secondary cell.

[0057] Using the above method, when the wake-up signal indicates that the terminal device should not be woken up, the network device can instruct the terminal device to send a reference signal in the primary cell and / or secondary cell.

[0058] Using the above design, the bits in the first information domain can be combined in various ways to instruct the terminal device to send reference signals in the primary cell and / or secondary cell.

[0059] In one possible design, the first information field includes at least one bit; one of the at least one bits or the state of one of the bits is used to indicate whether the terminal device transmits the reference signal in the primary cell; one of the other bits of the at least one bit or the state of one of the other bits is used to indicate whether the terminal device transmits the reference signal in the secondary cell.

[0060] In one possible design, the first information field is used to indicate whether the terminal device should return from a first action to a second action in the secondary cell when a wake-up signal indicates that the terminal device should be woken up, and / or whether the terminal device should return from a second action to a first action in the secondary cell. The first action refers to the terminal device listening to the PDCCH in the secondary cell; the second action refers to the terminal device ceasing to listen to the PDCCH in the secondary cell and performing background processing in the secondary cell, the background processing including at least one of the following: Channel State Information (CSI) measurement, or reporting CSI, or transmitting a reference signal in the secondary cell.

[0061] In one possible design, the first information field is further used to indicate whether the terminal device performs a third action in the primary cell and / or the secondary cell when the wake-up signal indicates not to wake up the terminal device. The third action includes at least one of the following: CSI measurement, or CSI reporting, or semi-persistent data scheduling.

[0062] With the above design, the first information domain can also be used to indicate various behaviors of the terminal device in the primary cell and / or secondary cell.

[0063] Fifthly, embodiments of this application provide a communication device, which may be a network device or a chip within a network device. The device may include a processing unit, a transmitting unit, and a receiving unit. It should be understood that the transmitting unit and receiving unit may also be transceivers. When the device is a network device, the processing unit may be a processor, and the transmitting and receiving units may be transceivers; the network device may also include a storage unit, which may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to cause the network device to perform the methods of the second aspect or any possible design of the second aspect, or the methods of the fourth aspect or any possible design of the fourth aspect. When the device is a chip within a network device, the processing unit may be a processor, and the transmitting and receiving units may be input / output interfaces, pins, or circuits, etc.; the processing unit executes the instructions stored in the storage unit to cause the chip to perform the methods of the second aspect or any possible design of the second aspect, or the methods of the fourth aspect or any possible design of the fourth aspect. The storage unit is used to store instructions. The storage unit can be a storage unit inside the chip (e.g., a register, cache, etc.) or a storage unit located outside the chip in the network device (e.g., a read-only memory, random access memory, etc.).

[0064] Sixthly, embodiments of this application provide a communication device, which may be a terminal device or a chip within a terminal device. The device may include a processing unit, a transmitting unit, and a receiving unit. It should be understood that the transmitting unit and receiving unit may also be transceiver units. When the device is a terminal device, the processing unit may be a processor, and the transmitting and receiving units may be transceivers; the terminal device may also include a storage unit, which may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to cause the terminal device to perform the method in the first aspect or any possible design of the first aspect, or the method in the third aspect or any possible design of the third aspect. When the device is a chip within a terminal device, the processing unit may be a processor, and the transmitting and receiving units may be input / output interfaces, pins, or circuits, etc.; the processing unit executes the instructions stored in the storage unit to cause the chip to perform the method in the first aspect or any possible design of the first aspect, or the method in the third aspect or any possible design of the third aspect. The storage unit is used to store instructions. The storage unit can be a storage unit inside the chip (e.g., a register, cache, etc.) or a storage unit located outside the chip in the terminal device (e.g., a read-only memory, random access memory, etc.).

[0065] In a seventh aspect, embodiments of this application also provide a computer-readable storage medium storing a computer program that, when run on a computer, causes the computer to perform the methods described in the first to fourth aspects.

[0066] Eighthly, embodiments of this application also provide a computer program product containing a program that, when run on a computer, causes the computer to perform the methods described in the first to fourth aspects. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of the DRX cycle in this application;

[0068] Figure 2 This is a schematic diagram illustrating the discontinuous reception of the start time of the inactive timer in this application;

[0069] Figure 3 This is a functional diagram of the wake-up signal in this application;

[0070] Figure 4 This is a schematic diagram of the communication system architecture in this application;

[0071] Figure 5 This is one of the flowcharts for reference signal reception and transmission in this application;

[0072] Figure 6 This is one of the schematic diagrams illustrating the time window configuration in this application;

[0073] Figure 7 The second illustration shows the time window configuration in this application;

[0074] Figure 8 This is the second flowchart of the reference signal reception and transmission in this application;

[0075] Figure 9 This is the third flowchart of the reference signal reception and transmission process in this application;

[0076] Figure 10 This is the fourth flowchart of the reference signal reception and transmission process in this application;

[0077] Figure 11 This is the fifth flowchart of the reference signal reception and transmission process in this application;

[0078] Figure 12 This is the sixth flowchart of the reference signal reception and transmission process in this application;

[0079] Figure 13 This is the seventh flowchart of the reference signal reception and transmission process in this application;

[0080] Figure 14This is one of the structural schematic diagrams of a device in this application;

[0081] Figure 15 This is a second schematic diagram of the structure of a device in this application. Detailed Implementation

[0082] The embodiments of this application will now be described with reference to the accompanying drawings.

[0083] Radio resource control (RRC) connected mode may be configured with discontinuous reception (C-DRX). The purpose is to allow the UE to enter DRX On Duration periodically to transmit and receive data, while at other times it can enter sleep mode and not listen to the PDCCH, thus saving UE power consumption. The sleep mode can be considered as the state where the UE is not listening to the PDCCH. When DRX is configured, the UE state can be divided into DRX Active and DRX Non-active states. The time the UE is in the DRX Active state is called the DRX Active Time. When the UE is in the DRX Active Time, it will continuously listen to the PDCCH. If the UE leaves the DRX Active Time, i.e., enters sleep mode (i.e., DRX Non-active state), the UE will not listen to the PDCCH.

[0084] The UE is in DRX Active state when any of the following timers are running: DRX duration timer (drx-onDurationTimer), DRX inactivity timer (drx-InactivityTimer), DRX downlink retransmission timer (drx-RetransmissionTimerDL), DRX uplink retransmission timer (drx-RetransmissionTimerUL), and random access contention resolution timer (ra-ContentionResolutionTimer). In addition, DRX Active Time also includes other situations, such as: the waiting time after the UE sends a scheduling request (SR) on the physical uplink control channel (PUCCH); and the waiting time after the UE successfully receives a random access response (RAR) indicating a new transmission but has not yet received a PDCCH indicating a new transmission.

[0085] Figure 1 This illustrates an example of the UE state after configuring a DRX cycle. The C-DRX mechanism is illustrated below: At the beginning of a C-DRX cycle, the UE first enters DRX On Duration, simultaneously activating drx-onDurationTimer. If, during DRX OnDuration, the UE receives a PDCCH indication for new downlink or uplink data transmission, drx-InactivityTimer will be activated (or restarted). The UE will remain in DRX-Active state until drx-InactivityTimer times out, or until the UE receives relevant medium access control element (MAC CE) signaling that causes drx-InactivityTimer to stop prematurely.

[0086] Among them, drx-InactivityTimer is the first symbol to start or restart after the PDCCH indicating new data transmission, such as Figure 2 As shown in the figure, the PDCCH schedules a new PDSCH transmission.

[0087] Specifically, when the UE is in DRX Active Time, the UE will continuously listen to the PDCCH, while when the UE is in DRX Inactive Time (or outside DRX Active Time), the UE will not listen to the PDCCH. The cyclic redundancy check (CRC) of the PDCCH here can be scrambled with one of the following radio network temporary identifiers (RNTIs): cell RNTI (C-RNTI), configured scheduling RNTI (CS-RNTI), interruption RNTI (INT-RNTI), slot format indication RNTI (SFI-RNTI), semi-persistent channel state information (SSI) RNTI (SP-CSI-RNTI), transmit power control-PUCCH-RNTI (TPC-PUCCH-RNTI), transmit power control-PUSCH-RNTI (TPC-PUSCH-RNTI) for the physical uplink shared channel (PUSCH), and a sounding reference signal. Transmit power control (SRS) temporary identifier for wireless networks (transmit power control-SRS-RNTI, TPC-SRS-RNTI).

[0088] The power saving signal, also known as the wake-up signal (WUS) or the go-to-sleep signal (GTS) (hereinafter referred to as WUS).

[0089] Currently, it is generally believed that WUS, sent outside the activation time, occurs before DRX On Duration and is used to indicate to the UE whether it needs to wake up to listen to PDCCH in the next one or more DRX cycles. WUS can include the following implementation methods:

[0090] (1) The UE detects WUS. If WUS is detected, the UE starts drx-onDurationTimer to enter DRX OnDuration and listen to PDCCH. If WUS is not detected, the UE does not start drx-onDurationTimer, that is, the UE does not need to wake up in this DRX cycle, but enters sleep mode to save power. Figure 3 As shown.

[0091] (2) The UE detects WUS. If WUS is detected, the UE does not enable drx-onDurationTimer, that is, the UE does not need to wake up in this DRX cycle, but enters sleep mode to save power. If WUS is not detected, the UE enables drx-onDurationTimer to enter DRX On Duration to listen to PDCCH.

[0092] (3) The UE detects the WUS and uses the WUS to indicate whether to wake up the UE, for example, by using 1 bit in the downlink control information (DCI) to indicate whether to wake up the UE.

[0093] Specifically, the WUS is transmitted using a new DCI format, namely DCI format 3_0, whose CRC is scrambled by a Power Saving Network Temporary Identifier (PS-RNTI). Therefore, if the UE detects the WUS, it can be described as the UE detecting DCI format 3_0 during the WUS listening period. If the UE does not detect the WUS, it can be described as the UE not detecting DCI format 3_0 during the WUS listening period.

[0094] In new radio (NR), the UE can obtain downlink channel state information (DL CSI) by receiving and measuring downlink channel state information reference signals (CSI-RS). The UE then reports the acquired CSI to the base station, which then obtains the downlink CSI. Similarly, for the uplink, the network can configure or indicate certain uplink resources. The UE transmits sounding reference signals (SRS) on these uplink resources, and the base station can obtain the uplink CSI by measuring the SRS transmitted by the UE.

[0095] Among them, the time-domain behavior of SRS transmission includes three types: periodic, semi-persistent, or aperiodic.

[0096] In the time domain, SRS resources can be configured as periodic, semi-persistent, or aperiodic. SRS resources are configured via RRC signaling. For periodic SRS resources, the UE begins sending periodic SRS on the corresponding resource after the RRC signaling takes effect. For semi-persistent SRS resources, after RRC signaling configuration, the semi-persistent SRS resource is inactive; the UE does not send SRS. The UE only sends SRS on the semi-persistent SRS resource after receiving MAC CE signaling to activate it. Similarly, the UE stops sending SRS after receiving MAC CE signaling to deactivate it. For aperiodic SRS resources, after RRC signaling configuration, the aperiodic SRS resource is also inactive. The UE only sends aperiodic SRS on the DCI-triggered aperiodic SRS resource after receiving DCI signaling to activate it.

[0097] The RRC signaling (RRC IE SRS-Config) can configure a series of SRS resource sets (SRS-ResourceSet) and a series of SRS resources (SRS-Resource). An SRS resource set includes one or more SRS resources.

[0098] A network can be configured with one or more functions for a single SRS resource set. For example, SRS functions may include the following four:

[0099] Used for beam management. Based on beam management in SRS, the base station can select appropriate receive / transmit beams, and the base station can also instruct the UE to select appropriate transmit or receive beams; beam management can also be understood as quasi-co-location (QCL) management. For example, if SRS resources are used for beam management, and the network device indicates that the reference signal used to transmit the PUSCH is a certain SRS resource, it is actually indicating that there is a QCL relationship between the PUSCH and the certain SRS resource. Thus, the UE can transmit the PUSCH resource with the same precoding as when transmitting the specific SRS resource. Furthermore, if two beams have the same direction, it can be assumed that the two beams use the same QCL parameters.

[0100] Used for codebook-based uplink (multiuser MIMO, MU-MIMO) transmission; for example, based on this function's SRS, the base station can instruct the UE to select an appropriate codebook (precoder) to perform PUSCH transmission;

[0101] Used for non-codebook-based uplink transmissions; for example, based on this function's SRS, the base station can instruct the UE to refer to which reference signal resource (e.g., SRS resource) to perform PUSCH transmission;

[0102] Used for antenna port switching; for example, based on this function, the base station can obtain the downlink CSI.

[0103] When WUS is configured, if the base station indicates not to wake up the UE for multiple consecutive WUS cycles, the UE will not start drx-onDurationTimer for multiple consecutive DRX cycles, thus failing to enter the DRX active time. Consequently, the UE will remain unwakeable for an extended period, potentially causing uplink interruption. Specifically, if the UE does not send SRS for an extended period, the base station cannot obtain the UE's timing advance (TA), which may cause the UE to lose uplink synchronization, leading to uplink interruption.

[0104] Furthermore, if the UE does not transmit SRS for an extended period, the base station may be unable to obtain accurate uplink channel state information (CSI) from the UE. Since the base station can perform multi-user MIMO pairing based on the UE's uplink CSI, inaccurate uplink CSI will inevitably degrade MU-MIMO performance. This is especially true for time-division duplex (TDD) networks, where the base station derives the downlink CSI from the uplink CSI based on channel heterogeneity. Therefore, the UE's prolonged failure to transmit SRS will also affect downlink performance.

[0105] This application is primarily applied to 5th generation wireless communication systems (new radio, NR) systems, but can also be applied to other communication systems, such as narrowband Internet of Things (NB-IoT) systems, machine-type communication (MTC) systems, and future next-generation communication systems.

[0106] The network elements involved in the embodiments of this application include terminal devices and network devices. For example... Figure 4As shown, network devices and terminal devices form a communication system. In this system, network devices send information to terminal devices via downlink channels, and terminal devices send information to network devices via uplink channels. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, IoT terminal devices, etc., and can also be called mobile stations, mobile terminals, remote stations, remote terminals, access terminals, user agents, or even cars in vehicle-to-vehicle (V2V) communication or machines in machine-to-machine communication; no limitation is made here. Network devices can be various types of base stations, such as macro base stations, micro base stations (also called small stations), relay stations, access points, evolved NodeBs (eNodeBs), wireless fidelity access points (WiFi APs), and worldwide interoperability for microwave access base stations (WiMAX BS), etc., no limitation is made here. Furthermore, the names of network devices that provide wireless access capabilities may differ in systems employing different wireless access technologies. For example, in LTE systems, they are called evolved NodeB (eNB or eNodeB), in 3rd generation (3G) systems, they are called Node B, and in NR systems, they are called gNB.

[0107] The aforementioned network elements can be network components implemented on dedicated hardware, software instances running on dedicated hardware, or instances of virtualized functions on a suitable platform. Furthermore, the embodiments of this application can also be applied to other future communication technologies. The network architecture and service scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will understand that, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided in this application are equally applicable to similar technical problems.

[0108] Example 1: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. For example... Figure 5 As shown, the method includes:

[0109] S501: The network device sends first information, which is used to configure the resources that enable the terminal device to send reference signals. Correspondingly, the terminal device receives the first information from the network device.

[0110] S502: The terminal device determines that the resource is in the DRX inactive time and sends a reference signal based on the resource.

[0111] In addition, if the terminal device determines that the resource is in the DRX activation period, there are several possible designs:

[0112] In one possible design, if the terminal device determines that the resource is in the DRX active period, the terminal device sends a reference signal based on the resource. In this way, regardless of whether the terminal device is in the DRX active period, the terminal device sends a reference signal based on the resource, which can solve the problem of uplink interruption caused by the UE not being woken up for a long time.

[0113] In another possible design, if the terminal device determines that the resource is in the DRX active period, the terminal device does not send a reference signal based on that resource. It is understood that the network device configures other resources outside of the stated resource for transmission during the DRX active period, and the terminal device can send a reference signal based on these other resources during the DRX active period. Outside of the DRX active period, the terminal device does not send a reference signal on these other resources, but instead sends a reference signal based on the stated resource. In this way, even when the UE is in the DRX inactive period for an extended period, it can still send a reference signal based on the stated resource, thus resolving the issue of uplink interruption that might occur if the UE is not woken up for a long time.

[0114] The resource can be a time window or a first reference signal resource. If the resource is a time window, the terminal device determines that the time window is in the DRX inactive time and sends a reference signal within the time window; if the resource is a first reference signal resource, the terminal device determines that the time domain position corresponding to the first reference signal resource is in the DRX inactive time and sends a reference signal on the first reference signal resource.

[0115] It should be understood that the reference signal described in this application may be an SRS, and the specific function of the SRS is not limited.

[0116] It should be understood that when a terminal device sends a reference signal within a time window, it is sending the reference signal on the reference signal resources within that time window.

[0117] The reference signal resources within the time window have the following possible designs:

[0118] In one possible design, the reference signal resource within the time window is a reference signal resource already configured by the network device, such as other resources configured by the network device for transmission during the DRX activation time as described above. In this case, if the other resource is located during the DRX activation time, the UE transmits the reference signal on that other resource; if the other resource is not located during the DRX activation time but is located within the time window, the UE also transmits the reference signal on that other resource; if the other resource is neither located during the DRX activation time nor within the time window, the UE does not transmit the reference signal on that other resource.

[0119] In another possible design, the reference signal resources within the time window are reference signal resources specifically configured by the network device for the time window.

[0120] Optionally, the specially configured reference signal resources are located only within the time window.

[0121] Optionally, a portion of the specially configured reference signal resources is located within the time window, while the other portion is located outside the time window.

[0122] For specially configured reference signal resources located outside the time window, if these resources are outside the DRX activation time, the UE will not transmit reference signals on these resources;

[0123] If these resources are within the DRX activation period, one implementation is for the UE to send reference signals on these resources, and another implementation is for the UE not to send reference signals on these resources. The choice of implementation method can be specified by the protocol or configured by the network device.

[0124] In another possible design, the reference signal resources within the time window include both pre-configured reference signal resources and reference signal resources specifically configured by the network device for the time window.

[0125] For time windows, the following possible designs are possible, including but not limited to:

[0126] In one possible design, the time window is the duration of the DRX, or a period of time within the duration of the DRX, or a period of time before the duration of the DRX.

[0127] For example, the time window is the first K time slots or the last K time slots within the DRX duration.

[0128] When using Orthogonal Frequency Division Multiplexing (OFDM) modulation technology, one time slot includes 14 OFDM symbols or 12 OFDM symbols.

[0129] The absolute time length of each subframe is 1 millisecond. Depending on the subcarrier spacing (SCS), a subframe can include different numbers of time slots. For example, for a 15kHz SCS, a subframe includes 1 time slot; for a 30kHz SCS, a subframe includes 2 time slots. For an n*15kHz subcarrier spacing, a subframe includes n time slots. For example, n is an even number.

[0130] The duration of a micro-timeslot is less than the duration of a single timeslot. For example, one micro-timeslot consists of M OFDM symbols. M is less than 14 or less than 12.

[0131] For example, a time window is the period between the WUS listening time and the corresponding DRX duration.

[0132] For example, the time window is a period of time before the WUS listening opportunity. This allows the UE to send a reference signal before detecting WUS, improving WUS performance. For instance, the reference signal can be used for beam management, allowing the base station to select a suitable transmission beam to send WUS based on the reference signal. Optionally, the time interval between the time window and the WUS listening opportunity is greater than or equal to a certain duration, where the certain duration is greater than or equal to the time the base station / UE spends on beam management / selection.

[0133] In one possible design, the time window occurs after the WUS listening opportunity, and the time interval between the time window and the WUS listening opportunity is greater than or equal to a duration A, where duration A is greater than or equal to the time it takes for the UE to parse the WUS DCI. Thus, in some implementations, after determining whether the WUS has instructed the UE to wake up, the UE can decide whether to send a reference signal within the time window based on the WUS instruction, higher-layer signaling configuration, or protocol specifications.

[0134] In one possible design, the time window follows the WUS listening event, and the time interval between the time window and the WUS listening event is less than or equal to duration B. Thus, in some implementations, if the WUS indicates that the UE does not need to be woken up, the UE can send a reference signal as quickly as possible within the time window and then return to sleep mode. This allows the UE to maintain a shorter wake-up time, thereby saving UE power consumption.

[0135] In another possible design, the time window is the period before the synchronization signal block (PBCHBlock, SSB), the period after the SSB, or the period that includes the SSB.

[0136] In another possible design, the time window is the period before the Synchronous Signal Block Measurement Timing Configuration (SMTC) window, the period after the SMTC, or the period that includes the SMTC.

[0137] Since the UE is configured to perform certain measurements, such as radio resource management (RRM) measurements, it can also perform RRM measurements based on the SSB during DRX inactivity. Therefore, if the time window is near the SSB or SMTC, the UE sends a reference signal within the time window during DRX inactivity. If the UE also performs RRM measurements based on the SSB, the UE can maintain a shorter wake-up time, saving UE power consumption. This configuration can also reduce the number of UE wake-ups, further saving UE power consumption.

[0138] In one possible design, the first information can be configured with a time window period, meaning the time window appears periodically. The time window period is M times the DRX period, or M times the SSB period, or M times the SMTC period, or M times the wake-up signal period, where M is a positive integer. The value of M can be configured by the network device or specified by the protocol.

[0139] The DRX cycle can be either a long DRX cycle or a short DRX cycle. The duration of both a long DRX cycle and a short DRX cycle is configured by the network device.

[0140] Since there may be one or more WUS listening opportunities before the DRX duration, the WUS period is equal to the time interval between the start (or end) times of two adjacent time periods. The time periods include one or more WUS listening opportunities before a DRX duration (and after the previous DRX duration). Optionally, the WUS period is equal to the C-DRX period, meaning there is a WUS listening opportunity before each on-duration. Alternatively, the WUS period can be greater than the C-DRX period, for example, it can be an integer multiple of the C-DRX period. For instance, a WUS listening opportunity occurs only after every DRX duration, meaning the WUS listening opportunity is twice the C-DRX period, and this WUS simultaneously indicates whether the following two DRX periods will both wake up or not.

[0141] For example, such as Figure 6 As shown, the period of the time window is 3 times the period of the DRX, and the time window is the duration of the DRX.

[0142] In one possible design, the terminal device receives third information from the network device, which is used to configure a second reference signal resource configured for a time window. The second reference signal resource is a dedicated resource configured for the time window. For example, if both the second reference signal resource and the time window are based on periodic configuration, the second reference signal resource can have the same period as the time window. In another example, as described above, the second reference signal resource can have a different period than the time window; for example, the period of the second reference signal resource may be shorter than the period of the time window. In this case, whether the UE transmits a reference signal for a second reference signal resource located outside the time window is as described above.

[0143] Furthermore, the reference signal resources used by the terminal device within the time window can also be resources not configured for the time window.

[0144] It should be understood that the aforementioned dedicated resources configured for or not configured for time windows can be periodic and / or semi-persistent SRS resources. If configured as semi-persistent, the UE will only transmit reference signals based on the reference signal resource after it is activated; the UE will not transmit reference signals based on the reference signal resource after it is deactivated. The activation signaling can be MAC CE signaling or physical layer signaling, such as DCI.

[0145] It should be understood that, for a second reference signal resource configured for a time window, a network device may configure one or more such reference signal resources, or configure one or more sets of reference signal resources, including the one or more second reference signal resources.

[0146] It should be understood that, for a first reference signal resource, the network device may configure one or more such reference signal resources, or configure one or more sets of reference signal resources, including the one or more first reference signal resources.

[0147] There are several other designs for configuring time windows.

[0148] For example, the first information can be configured with parameters such as the length of the time window, the period, and the time offset.

[0149] The length of the time window can be measured in units such as: time slot, micro-time slot, symbol, subframe, millisecond (ms), etc. The period of the time window can be measured in units such as: time slot, micro-time slot, subframe, millisecond (ms), second (s), etc. The unit of the time offset of the time window is the same as the unit of the period.

[0150] In one possible design, the first information includes one period parameter and one time offset parameter. Alternatively, the first information includes one period parameter and multiple time offset parameters. When there are multiple time offset parameters, the units for the different time offset parameters are different. For example, a time offset may be in the unit of a subframe, representing a subframe offset; a time offset may be in the unit of a time slot, representing a time slot offset; and a time offset may be in the unit of a symbol, representing a symbol offset.

[0151] Furthermore, using the above parameters, and according to certain predefined rules or calculation formulas, the temporal location of the start time of each time window can be calculated. For example, the system frame number (SFN) of the start time of the time window, and the specific subframe, time slot, or symbol of the start time of the time window within a frame.

[0152] It should be understood that the following solutions are merely examples and are not intended to limit the embodiments of this application.

[0153] Option 1:

[0154] The first piece of information includes the period of the time window and two time offsets. One time offset is the period offset, and the other is the time slot offset. The period offset is in the same unit as the period. For example, both the period and the period offset are in milliseconds (ms).

[0155] The period is represented by T, the period offset by T_offset, and the slot offset by T_slotOffset.

[0156] The SFN and subframe at the start of the time window are determined by the following formula:

[0157] [(SFN×10)+subframe number]modulo T=T_offset;

[0158] Furthermore, the specific time slot of the start time of the time window within a given subframe can be determined based on the time slot offset of the time window.

[0159] Optionally, the first information also includes a third time offset, in symbols, denoted as T_symbolOffset. The symbol offset can be used to further determine the specific symbol in the defined time slot where the start time of the time window is located.

[0160] Option 2:

[0161] The first piece of information includes the period of the time window and one time offset. Both the period and the time offset are in units of a slot. Let the period be T1 and the time offset be T1_slotOffset.

[0162] The SFN at which the start time of the time window is located and the slot number in the determined frame. Determined by the following formula:

[0163]

[0164] in, This represents the number of time slots in a frame where the subcarrier spacing (SCS) is μ. SCS represents the slot number in a frame where SCS is μ.

[0165] Optionally, the first information also includes a second time offset, in symbols, denoted as T1_symbolOffset. The symbol offset can be used to further determine the specific symbol in the defined time slot where the start time of the time window is located.

[0166] Option 3:

[0167] The first piece of information includes parameters such as the length of the time window and the relative time offset.

[0168] The relative time offset is the time interval between the start time of the time window and the first time domain position, or the time interval between the end time of the time window and the first time domain position. The first time domain position can be the start time of the DRX duration, or the WUS listening opportunity before the DRX duration, or the start or end time of a time period containing the WUS listening opportunity before the DRX duration. It should be understood that when the WUS listening opportunity occupies only one OFDM symbol, the first time domain position is the symbol containing the WUS, or the start or end time of the symbol containing the WUS. When the WUS listening opportunity occupies multiple OFDM symbols or multiple time slots, the first time domain position is the starting symbol of the WUS listening opportunity, or the starting symbol of the time slot containing the starting symbol of the WUS listening opportunity, or the ending symbol of the WUS listening opportunity, or the ending symbol of the time slot containing the ending symbol of the WUS listening opportunity.

[0169] For example, such as Figure 7 As shown, the first information includes the length of the time window and the relative time offset, which is the time interval between the end time of the time window and the start time of the DRX duration.

[0170] Option 4: The first information includes one or two time offset parameters.

[0171] As one possible implementation, the first information includes a time offset parameter, and the window is determined by the time offset parameter and a preset time domain position. The start time (or end time) of the time window is determined by the time offset parameter, and the end time (or start time) of the time window is the preset time domain position. The implementation method of the preset time domain position is the same as the implementation method of the first time domain position described above, and will not be repeated here.

[0172] Optionally, the time offset can also be an offset relative to a preset time domain position. For example, the preset time domain position is the start time of the DRX duration, that is, the end time of the time window is the start time of the DRX duration. The time offset is an offset relative to the WUS monitoring timing, which can be used to determine the start time of the time window. For example, the preset time domain position is the end time of the WUS monitoring timing. The time offset is an offset relative to the start time of the DRX duration. For example, the preset time domain position is the start time of the WUS monitoring timing. The time offset is an offset relative to the start time of the DRX duration.

[0173] As one possible implementation, the first information includes two time offset parameters, and a time window is determined by these two time offset parameters. For example, the two time offset parameters are offsets relative to the same preset time domain position. Alternatively, the two time offset parameters are offsets relative to different preset time domain positions.

[0174] Option 5:

[0175] A time window is a portion of the DRX duration; for example, the time window is the first of every N DRX durations. These portion of the DRX duration are called specific durations (specific on duration). Below is an example of how to configure specific on durations.

[0176] Example 1: Configure a network device with a specific on duration period.

[0177] Specifically, based on the specific on-duration period and the pre-configured DRX period offset (drx-StartOffset) and slot offset (drx-Slotoffset) parameters, the time domain position of the specific on-duration can be determined.

[0178] The parameters such as DRX cycle offset (drx-StartOffset) and slot offset (drx-Slotoffset) are located in the DRX-Config IE. The DRX cycle offset (drx-StartOffset) is determined by the parameter drx-LongCycleStartOffset in the DRX-Config IE.

[0179] As an optional implementation, the network device is configured with a specific on-duration period that is N times the long period of the DRX, where N is greater than or equal to 1.

[0180] Example 2: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. For example... Figure 8 As shown, the method includes:

[0181] S801: The network device sends first information, which is used to configure the resources that enable the terminal device to send reference signals. Correspondingly, the terminal device receives the first information from the network device.

[0182] The resources configured for network devices can be referenced from the above embodiments, and repeated details will not be repeated.

[0183] S802: The terminal device detects a wake-up signal from the network device.

[0184] S803a: If no wake-up signal is detected and the terminal device determines not to wake up the terminal device, or if a wake-up signal is detected and the wake-up signal indicates not to wake up the terminal device, the terminal device sends a reference signal based on the resource.

[0185] S803b: If no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, the terminal device shall send a reference signal based on the resource.

[0186] Using the above method, the resources by which the terminal device configured with the first information can send reference signals are not constrained by the wake-up signal. Regardless of whether the terminal device is woken up, the terminal device sends reference signals based on these resources.

[0187] It should be understood that network devices can also be configured with other resources. When the UE is in the DRX active period, the UE transmits reference signals on other resources; when the UE is in the DRX inactive period, the UE does not transmit reference signals on other resources.

[0188] Example 3: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. Figure 9 As shown, the method includes:

[0189] S901: The network device sends first information, which is used to configure the resources that enable the terminal device to send reference signals. Correspondingly, the terminal device receives the first information from the network device.

[0190] The resources configured for network devices can be referenced from the above embodiments, and repeated details will not be repeated.

[0191] S902: The network device sends a second message, which indicates a first duration, the duration during which the terminal device has not been woken up continuously.

[0192] It should be understood that the first and second messages can be sent separately or together. For example, the first and second messages may be two different information fields within the same message.

[0193] S903: The terminal device determines that the duration during which the terminal device has not been woken up has reached the first duration, and the terminal device sends a reference signal based on this resource.

[0194] It should be understood that if the terminal device determines that the duration during which the terminal device has not been woken up has not reached the first duration, it will not send a reference signal even if it encounters the resource.

[0195] For example, if the resource is a time window, which can be configured periodically, the UE will not send a reference signal within the time window even if it is encountered and the time window is located during the DRX inactivity period, as long as the duration during which the UE is not woken up has not reached the first duration. Similarly, if the resource is a first reference signal resource, which can be configured periodically, the UE will not send a reference signal within the first reference signal resource even if it is encountered and the first reference signal resource is located during the DRX inactivity period, as long as the duration during which the UE is not woken up has not reached the first duration.

[0196] It should be understood that when the UE is woken up, the first duration accumulated time / count should be set to the initial value and the time / count should be re-accumulated. In addition, when the WUS instructs the UE not to wake up, but the UE wakes up because it determines that the time it has not been woken up has reached the first duration, a reference signal is sent on the resource, and the first duration accumulated time / count should also be set to the initial value and the time / count should be re-accumulated.

[0197] In one possible design, the first duration is N DRX cycles. The resource can be the first DRX duration after N DRX cycles, or a time period within the first DRX duration after N DRX cycles, or a time period before the first DRX duration after N DRX cycles, or a time period after the first DRX duration after N DRX cycles and before the second DRX duration after N DRX cycles, or M reference signal resources within the first DRX duration after N DRX cycles, or M reference signal resources after the first DRX duration after N DRX cycles and before the second DRX duration after N DRX cycles, or M reference signal resources before the first DRX duration after N DRX cycles, where N and M are positive integers. The values ​​of N and M can be configured by the network device or specified by the protocol.

[0198] Optionally, the M reference signal resources are the reference signal resources included in M ​​reference signal resource periods for the same reference signal resource. For example, the M reference signal resources are the reference signal resources included in M ​​reference signal resource periods of a first reference signal resource. As another example, the M reference signal resources are the reference signal resources included in M ​​reference signal resource periods of other resources configured in the network device as described above.

[0199] The DRX period can be a long DRX period or a short DRX period.

[0200] For the first duration, there are several other designs:

[0201] In one possible design, the first duration is the duration during which the UE sleeps when P consecutive WUS signals indicate no wake-up, or the duration during which P consecutive WUS signals are not detected and the terminal device determines not to wake up, or the duration during which the UE sleeps when it detects P consecutive WUS signals (regardless of whether a WUS is detected) and determines not to wake up. The terminal device determining that the first duration has elapsed can be achieved by the terminal device determining that P consecutive WUS signals indicate no wake-up. The value of P can be configured by the network or specified by the protocol.

[0202] It should be understood that if there are multiple WUS listening opportunities before a DRX duration, then 1 WUS corresponds to the multiple WUS listening opportunities. Therefore, the P WUS correspond to P DRX durations.

[0203] At this time, the determination that the terminal device has not been woken up for a period of time can also be described as the determination that the terminal device has not been woken up for a number of consecutive times. Here, the first number is the number of times the WUS indicates that the terminal device will not be woken up, or the number of times the WUS has not been detected and the terminal device has determined not to wake up.

[0204] In another possible design, the network device is configured with a first duration. For example, the unit of the first duration could be seconds, milliseconds (ms), frames, subframes, time slots, etc.

[0205] In another possible design, the resource is not configured periodically, but rather an aperiodic resource is triggered by a condition. For example, the condition might be that the terminal device determines that the duration of its inactivity has reached a first duration. The aperiodic resource could be an aperiodic time window or an aperiodic reference signal resource.

[0206] Using the above method, the terminal device can promptly send a reference signal after determining that it has not sent a reference signal for a long time, ensuring that the uplink is not interrupted.

[0207] Example 4: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. Figure 10 As shown, the method includes:

[0208] S1001: The network device sends first information, which configures the resources that the terminal device can use to send reference signals. The resources configured in the first information are a time window or a first reference signal resource. Correspondingly, the terminal device receives the first information from the network device.

[0209] The resources configured for the network device can be referred to in the above embodiments, and repeated details will not be repeated.

[0210] S1002: The terminal device detects a wake-up signal from the network device.

[0211] S1003a: If no wake-up signal is detected and the terminal device determines not to wake up the terminal device, or if a wake-up signal is detected and the wake-up signal indicates not to wake up the terminal device, the terminal device sends a reference signal based on the resource.

[0212] S1003b: If no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, the terminal device does not send a reference signal based on the resource.

[0213] It should be understood that after the terminal device is woken up, it normally sends reference signals within the DRX active time.

[0214] Using the above method, the terminal device sends a reference signal based on the resource during the inactive period and then stops sending the reference signal based on the resource during the active period.

[0215] It should be understood that if no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and indicates that the terminal device should be woken up, the terminal device will not send a reference signal based on the resource. Whether the resource is within the DRX activation time can be implemented in the following ways:

[0216] Method 1: The resource is located during the DRX inactive period.

[0217] For example, the resource is located before the WUS listening time and the DRX duration. Since the UE is about to wake up and enter the DRX activation time during the DRX duration, the UE can send the reference signal normally during the activation time, so the UE does not need to send the reference signal based on the resource.

[0218] For example, if the resource is located after the DRX duration of the UE wake-up and before the next DRX duration, and the UE enters the DRX inactivity time before the resource, for example, the network device sends a MAC CE signaling to terminate the UE's DRX inactivity timer (drx-InactivityTimer), then since the UE has already normally sent the reference signal during the DRX activation time of the UE wake-up (e.g., within the DRX duration of the UE wake-up), the UE does not need to send the reference signal based on the resource, which can reduce the number of times the UE sends the reference signal and save UE power consumption.

[0219] Method 2: The resource is located during the DRX activation time.

[0220] At this time, if the resource and other resources mentioned above during the DRX activation time completely overlap in both time and frequency domains, the UE will transmit a reference signal on the resource; if the resource and other resources mentioned above during the DRX activation time do not completely overlap in both time and frequency domains, the UE will not transmit a reference signal on the resource.

[0221] It should be understood that when determining whether resources overlap, if the resource is a time window, the determination is made between the reference signal resource within the time window and the other resources to determine whether resources overlap.

[0222] Example 5: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. Figure 11 As shown, the method includes:

[0223] S1101: The network device sends first information, which is used to configure resources that the terminal device can use to send reference signals. In this embodiment, if the resource configured in the first information is a time window, the time window is located between the wake-up signal and the DRX duration. If the resource configured in the first information is a first reference signal resource, the time domain location of the first reference signal resource is located between the wake-up signal and the DRX duration. Accordingly, the terminal device receives the first information from the network device.

[0224] The resources configured for the network device can be referred to in the above embodiments, and repeated details will not be repeated.

[0225] S1102: The terminal device detects a wake-up signal from the network device.

[0226] S1103a: If no wake-up signal is detected and the terminal device determines not to wake up the terminal device, or if a wake-up signal is detected and the wake-up signal indicates not to wake up the terminal device, the terminal device does not send a reference signal based on the resources.

[0227] S1103b: If no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, the terminal device sends a reference signal based on the resource.

[0228] Using the above method, when the resource is between the wake-up signal and the DRX duration, if the terminal device determines to wake up, it can send a reference signal as soon as possible before the DRX duration to be woken up, thereby achieving rapid uplink recovery. Since the reference signal is sent before the DRX duration and the uplink is restored, it does not affect the UE's data transmission and reception performance after the DRX duration timer starts. If no wake-up signal is detected and the terminal device determines not to wake up, or if a wake-up signal is detected and indicates not to wake up, the UE does not send a reference signal, which greatly saves UE power consumption.

[0229] The resources can be configured periodically.

[0230] Alternatively, the resource is configured non-periodically, and is only triggered when no wake-up signal is detected and the terminal device determines to wake up, or when a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up.

[0231] In addition to the resource configuration methods described in the above embodiments, if the resource is a first reference signal resource, the first reference signal resource may be a subset of other resources as described above. For example, the time domain and frequency domain of the first reference signal resource and the reference signal resources in a portion of the other resources as described above are completely identical.

[0232] In addition to the configuration methods described above, the resources can also be specified through protocol-defined methods. For example, the protocol specifies that if no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and indicates that the terminal device should be woken up, then the UE transmits the reference signal on M resources of the other resources between the WUS and the corresponding DRX duration. The M resources represent the reference signal resources within M periods of the other resources. The other resources can be one or more other reference signal resources, and the network device can configure or the protocol can specify which other resources are included.

[0233] For example, the protocol may specify that the M resources are the first other resource closest to the DRX duration before the DRX duration, or the first other resource after the WUS listening time, or the first other resource with a time interval greater than or equal to the duration C from the start time of the DRX duration, or the first other resource after the WUS listening time and with a time interval greater than or equal to the duration D from the WUS listening time.

[0234] If the resource is a time window, the protocol can specify that the time window is the period between the WUS listening time and the DRX duration.

[0235] Example 6: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. Figure 12 As shown, the method includes:

[0236] S1201: The network device sends first information, which configures the resources that the terminal device can use to transmit reference signals. The resources configured in the first information are first reference signal resources. Correspondingly, the terminal device receives the first information from the network device.

[0237] S1202: The network device sends fourth information, which is used to configure the second reference signal resource.

[0238] It should be understood that the first and fourth messages can be sent separately or together. For example, they can be sent separately in different messages or in the same message. Sending them separately in different messages can mean sending them at different times or at the same time.

[0239] In one possible design, the frequency domain resources corresponding to the first reference signal resource and the second reference signal resource are the same, but the periods of the first reference signal resource and the second reference signal resource are different.

[0240] In one example, the periods of the two sets of reference signal resources are period 1 and period 2, respectively, and the two sets of reference signal resources can correspond to the same set of SRS resources.

[0241] For example, the resources corresponding to period 2 can be a subset of the resources corresponding to period 1. For instance, a network device might be configured with two period parameters: period 1 and period 2. Period 2 is M times period 1, where M is an integer greater than or equal to 1. The network device can configure the value of M, or it can directly configure the sizes of period 1 and period 2.

[0242] For the period offset parameter used to determine the time-domain location of a reference signal resource, network devices can configure one or two period offset parameters. When two period offset parameters are configured, period 1 and period 2 correspond to these two period offset parameters respectively. When one period offset parameter is configured, period 1 and period 2 share this single period offset parameter. The time-domain location of the reference signal resource can be calculated using the period and period offset.

[0243] As mentioned above, the parameters for indicating period 1, period 2, and period offset are located in the same reference signal resource configuration information element (IE).

[0244] In another example, for an SRS resource (e.g., the resource being the second reference signal resource), every M SRS cycles (or every M SRS resources), N SRS resources (or SRS resources of N time lengths) are selected (these N SRS resources (or SRS resources of N time lengths) are the first reference signal resource).

[0245] The values ​​of M and N can be predefined by the protocol, or they can be configurable by higher-layer signaling. When the values ​​of M and N are configurable by higher-layer signaling, if the network device does not configure the values ​​of M and N (for example, the first information configures two sets of reference signal resources, and the first information defaults to the corresponding parameters indicating the values ​​of M and N), the protocol can predefine a default value for M and N.

[0246] In another example, period 1 corresponds to one set of SRS resources, and period 2 corresponds to another set of SRS resources. The network device configures the SRS resources corresponding to period 1 and period 2 respectively through two SRS-Resource IEs.

[0247] S1203: The terminal device detects a wake-up signal from the network device.

[0248] S1204a: If no wake-up signal is detected and the terminal device determines not to wake up the terminal device, or if a wake-up signal is detected and the wake-up signal indicates not to wake up the terminal device, the terminal device sends a reference signal on the first reference signal resource and does not send a reference signal on the second reference signal resource.

[0249] S1204b: If no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, the terminal device shall send a reference signal on the second reference signal resource.

[0250] For the first reference signal resource, if no wake-up signal is detected and the terminal device determines to wake up, or if a wake-up signal is detected and the wake-up signal indicates that the terminal device should be woken up, there are two implementation methods:

[0251] Method 1: The terminal device transmits a reference signal on the first reference signal resource.

[0252] Using the above method, the terminal device can send reference signals on the first reference signal resource whether it is awake or not.

[0253] Method 2: The terminal device does not transmit a reference signal on the first reference signal resource.

[0254] It should be understood that for method 2, if the two sets of resources partially overlap, the overlapping SRS resources are not affected by WUS. That is, regardless of whether the terminal device is woken up or not, the UE sends SRS on the overlapping SRS resources.

[0255] Using the above method, the terminal device can send reference signals using different reference signal resources when it is awake and when it is not awake.

[0256] It should be understood that the network device can configure one or more of the first reference signal resource and the second reference signal resource, respectively.

[0257] Example 7: This application provides a reference signal transmission and reception method to solve the problem that uplink interruption may occur when a UE is not woken up for a long time. Figure 13 As shown, this method can be used in carrier aggregation (CA) scenarios, including:

[0258] S1301: The network device sends a wake-up signal to the terminal device. The wake-up signal indicates that the terminal device should not be woken up. The first information field included in the wake-up signal is used to indicate whether the terminal device sends a reference signal in the primary cell and / or secondary cell.

[0259] S1302a: If the first information field indicates that the terminal device should send a reference signal in the main cell, the terminal device should send a reference signal in the main cell.

[0260] S1302b: If the first information field instructs the terminal device to send a reference signal in the secondary cell, the terminal device sends a reference signal in the secondary cell.

[0261] S1302c: If the first information field instructs the terminal device to send reference signals in the primary cell and the secondary cell, the terminal device sends reference signals in the primary cell and the secondary cell.

[0262] The first information field is used to indicate whether the terminal device transmits a reference signal in the primary cell and / or secondary cell. The effective time of this indication can be designed in the following ways:

[0263] In one possible design, the effective time is the duration of DRX during which the WUS indicates the UE does not wake up.

[0264] In another possible design, the effective time is the DRX cycle during which WUS indicates that the UE should not wake up.

[0265] In one possible design, the first information field is used to indicate whether the terminal device should return from the first action to the second action in the secondary cell when the wake-up signal indicates that the terminal device should be woken up, and / or whether the terminal device should return from the second action to the first action in the secondary cell. The first action refers to the terminal device listening to the PDCCH in the secondary cell. It should be understood that the UE listening to the PDCCH in the secondary cell indicates that the UE is in the DRX active time. The second action refers to the terminal device stopping listening to the PDCCH in the secondary cell and performing background processing in the secondary cell. The background processing includes at least one of the following: Channel State Information (CSI) measurement, or reporting CSI, or transmitting a reference signal in the secondary cell.

[0266] In one possible design, the first information field is also used to indicate whether the terminal device performs a third action in the primary cell and / or secondary cell when the wake-up signal indicates that the terminal device should not be woken up. The third action includes at least one of the following: CSI measurement, or CSI reporting, or semi-persistent data scheduling.

[0267] Furthermore, the first information field can also be used to indicate whether a downlink reference signal exists when the wake-up signal indicates that the terminal device should not be woken up. For example, the downlink reference signal may be a CSI-RS, or a CSI-RS used for RRM measurement.

[0268] The semi-persistent data scheduling includes at least one of the following:

[0269] Downlink semi-persistent data scheduling, such as downlink semi-persistent data scheduling triggered by downlink control information scrambled by CS-RNTI;

[0270] Uplink semi-persistent data, such as uplink semi-persistent data scheduling triggered by downlink control information scrambled by CS-RNTI, or uplink semi-persistent data scheduling configured by RRC signaling.

[0271] The first information field includes at least one bit. One of the at least one bits, or the state of one of the bits, is used to indicate whether the terminal device is transmitting a reference signal in the primary cell. The state of one of the other bits, or the state of another bit, is used to indicate whether the terminal device is transmitting a reference signal in the secondary cell. The following description, in conjunction with specific examples, illustrates different contents indicated by the first information field. It should be understood that the following examples are not intended to limit the embodiments of this application.

[0272] Example 1: The first information field includes 1 bit. When WUS instructs the UE to wake up, this 1 bit corresponds to a secondary cell group. A secondary cell group includes one or more active secondary cells. When WUS instructs the UE to sleep, setting this bit to 1 (or 0) instructs the terminal device to send a reference signal in the primary cell, and setting this bit to 0 (or 1) instructs the terminal device not to send a reference signal in the primary cell. By default, the terminal device does not send reference signals in any secondary cells within the secondary cell group or in any active secondary cells. Alternatively, setting this bit to 1 (or 0) instructs the terminal device to send a reference signal in the primary cell and all secondary cells within the secondary cell group, and setting this bit to 0 (or 1) instructs the terminal device not to send a reference signal in the primary cell and all secondary cells within the secondary cell group. Other active secondary cells can be configured or protocol-specified to send or not send reference signals.

[0273] Alternatively, setting this bit to 1 (or 0) instructs the terminal device to transmit reference signals in at least one selected secondary cell or all secondary cells, while setting this bit to 0 (or 1) instructs the terminal device not to transmit reference signals in at least one selected secondary cell or at least one selected secondary cell group or all secondary cells. The default configuration allows the terminal device to transmit reference signals in the primary cell. The selected secondary cells can be specified by network configuration or protocol. The default configuration prevents the terminal device from transmitting reference signals in unselected secondary cells or unselected secondary cell groups.

[0274] Example 2: The first information field consists of 2 bits and can indicate 4 bit states. The indication scheme of the first information field can be shown in Table 1.

[0275]

[0276] Table 1

[0277] It should be understood that the aforementioned specific secondary cell refers to a secondary cell that is in an active state.

[0278] Optionally, the specific secondary cells mentioned above are all secondary cells that are in an active state.

[0279] Optionally, the specific secondary cell mentioned above is the secondary cell corresponding to the 2 bits included in the first information field, while other active secondary cells can be configured or stipulated by protocol to send or not send reference signals.

[0280] Example 3: The first information field includes n bits, which are used to indicate whether the terminal device transmits a reference signal in n secondary cells or n secondary cell groups. When one bit indicates that the terminal device transmits a reference signal in the corresponding secondary cell or secondary cell group, the terminal device also transmits a reference signal in the primary cell. n is a positive integer.

[0281] Example 4: The first information field includes m bits, where m is greater than or equal to 2. If the network configuration or protocol specifies that the terminal device does not send a reference signal by default in one of the secondary cells or secondary cell groups, the first information field indicates whether the terminal device sends a reference signal in PCell and / or other remaining secondary cells or secondary cell groups.

[0282] For example, the first information field is the SCell bitmap, and a SCell group can be configured at the corresponding bit position in the SCell bitmap to configure the terminal device not to send reference signals by default in that SCell group.

[0283] For example, the first information field is the SCell bitmap. The protocol stipulates that the terminal device sends a reference signal to the Scell ​​group that does not correspond to the most significant bit (MSB) of the bitmap in the SCell bitmap, and / or the terminal device sends a reference signal to the Scell ​​group that does not correspond to the least significant bit (LSB) of the bitmap in the SCell bitmap.

[0284] It should be understood that in a CA scenario, a carrier can be considered as a serving cell, and the transmission of data between the UE and the base station in different serving cells can be considered as the transmission of data on different carriers.

[0285] In the embodiments provided above, the communication methods provided by the embodiments of this application have been described from the perspectives of each network element itself and the interaction between each network element. It is understood that each network element, such as network devices and terminal devices, includes corresponding hardware structures and / or software modules to perform the above functions in order to achieve the aforementioned functions. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0286] Similar to the above concept, such as Figure 14 As shown in the figure, this application embodiment also provides an apparatus 1400, which includes a transceiver unit 1402 and a processing unit 1401.

[0287] In one example, device 1400 is used to implement the functions of the terminal device in the above method. This device can be the terminal device itself, or a component within the terminal device, such as a chip system.

[0288] The transceiver unit 1402 receives first information from the network device; the first information is used to configure the resources that enable the terminal device to send reference signals.

[0289] Processing unit 1401 determines that the resource is in a discontinuous reception DRX inactive time, and transceiver unit 1402 transmits a reference signal based on the resource.

[0290] In one example, device 1400 is used to implement the functions of the first communication device in the above method. This device can be a terminal device or a component within the terminal device, such as a chip system.

[0291] The transceiver unit 1402 detects a wake-up signal from the network device. The wake-up signal indicates that the terminal device should not be woken up. The first information field included in the wake-up signal is used to indicate whether the terminal device transmits a reference signal in the primary cell and / or secondary cell.

[0292] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the main cell, the transceiver unit 1402 sends the reference signal in the main cell;

[0293] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the secondary cell, the transceiver unit 1402 sends the reference signal in the secondary cell;

[0294] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the primary cell and the secondary cell, the transceiver unit 1402 sends the reference signal in the primary cell and the secondary cell.

[0295] In one example, device 1400 is used to implement the functions of the network device in the above method. This device can be the network device itself, or a device within the network device.

[0296] The transceiver unit 1402 sends first information to the terminal device; the first information is used to configure the resources that enable the terminal device to send reference signals.

[0297] Processing unit 1401 determines that the resource is in a DRX inactive time, and transceiver unit 1402 receives a reference signal from the terminal device based on the resource.

[0298] In one example, device 1400 is used to implement the functions of the network device in the above method. This device can be the network device itself, or a device within the network device.

[0299] The transceiver unit 1402 sends a wake-up signal to the terminal device. The wake-up signal indicates that the terminal device should not be woken up. The first information field included in the wake-up signal is used to indicate whether the terminal device sends a reference signal in the primary cell and / or secondary cell.

[0300] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the main cell, the transceiver unit 1402 receives the reference signal from the terminal device in the main cell.

[0301] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the secondary cell, the transceiver unit 1402 receives the reference signal from the terminal device in the secondary cell.

[0302] If the processing unit 1401 determines that the first information field instructs the terminal device to send a reference signal in the primary cell and the secondary cell, the transceiver unit 1402 receives the reference signal from the terminal device in the primary cell and the secondary cell.

[0303] For details regarding the execution process of processing unit 1401 and transceiver unit 1402, please refer to the description in the above method embodiments. The module division in this application embodiment is illustrative and merely a logical functional division; in actual implementation, other division methods may exist. Furthermore, the functional modules in each embodiment of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0304] As another alternative variation, the device can be a chip system. In this embodiment, the chip system can be composed of chips or may include chips and other discrete devices. Exemplarily, the device includes a processor and an interface, which can be an input / output interface. The processor performs the functions of the processing unit 1401 described above, and the interface performs the functions of the transceiver unit 1402 described above. The device may also include a memory for storing a program that can run on the processor, and when the processor executes the program, it implements the methods of the various embodiments described above.

[0305] Similar to the above concept, such as Figure 15 As shown in the illustration, this application also provides an apparatus 1500. The apparatus 1500 includes: a communication interface 1501, at least one processor 1502, and at least one memory 1503. The communication interface 1501 is used to communicate with other devices via a transmission medium, thereby enabling the apparatus in the apparatus 1500 to communicate with other devices. The memory 1503 is used to store computer programs. The processor 1502 calls the computer program stored in the memory 1503 to send and receive data through the communication interface 1501 to implement the methods described in the above embodiments.

[0306] For example, when the device is a network device, the memory 1503 is used to store a computer program; the processor 1502 calls the computer program stored in the memory 1503 and executes the method executed by the network device in the above embodiment through the communication interface 1501. When the device is a first communication device, the memory 1503 is used to store a computer program; the processor 1502 calls the computer program stored in the memory 1503 and executes the method executed by the terminal device in the above embodiment through the communication interface 1501.

[0307] In this embodiment, the communication interface 1501 can be a transceiver, circuit, bus, module, or other type of communication interface. The processor 1502 can be a general-purpose processor, digital signal processor, application-specific integrated circuit, field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in this embodiment. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in this embodiment can be directly embodied in the execution of a hardware processor, or executed by a combination of hardware and software modules in the processor. The memory 1503 can be non-volatile memory, such as a hard disk drive (HDD) or solid-state drive (SSD), or it can be volatile memory, such as random-access memory (RAM). Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in this embodiment can also be a circuit or any other device capable of implementing storage functions. The memory 1503 and processor 1502 are coupled. In this embodiment, the coupling is an intermittent coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. Alternatively, the memory 1503 may be located outside the device 1500. The processor 1502 can operate in conjunction with the memory 1503. The processor 1502 can execute program instructions stored in the memory 1503. At least one of the at least one memory 1503 may also be included in the processor 1502. This embodiment does not limit the connection medium between the communication interface 1501, the processor 1502, and the memory 1503. For example, in this embodiment... Figure 15 The memory 1503, processor 1502 and communication interface 1501 can be connected by a bus, which can be divided into address bus, data bus, control bus, etc.

[0308] Understandably, the above Figure 14 The apparatus in the illustrated embodiment can be used as follows: Figure 15 The device 1500 shown is implemented. Specifically, the processing unit 1401 can be implemented by the processor 1502, and the transceiver unit 1402 can be implemented by the communication interface 1501.

[0309] This application also provides a computer-readable storage medium storing a computer program that, when run on a computer, causes the computer to perform the methods shown in the above embodiments.

[0310] The methods provided in this application can be implemented entirely or partially through software, hardware, firmware, or any combination thereof. When implemented in software, they can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid state disks (SSDs)).

[0311] The above description of the embodiments is only used to provide a detailed introduction to the technical solutions of this application. However, the description of the above embodiments is only for the purpose of helping to understand the methods of the embodiments of the present invention and should not be construed as a limitation of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art should be covered within the protection scope of the embodiments of the present invention.

Claims

1. A reference signal transmission method, characterized by, The method comprises: The terminal device receives first information from the network device; the first information is used for configuring a resource through which the terminal device can send a reference signal; The terminal device determines that the resource is in a discontinuous reception (DRX) inactive time, and sends a reference signal based on the resource; The terminal device receives second information from the network device, and the second information is used for indicating a first time length, which is a time length during which the terminal device is continuously not woken up; The terminal device sends a reference signal on the resource, comprising: The terminal device determines that the terminal device reaches the first time length, and the terminal device sends the reference signal on the resource.

2. The method of claim 1, wherein, The terminal device sends a reference signal based on the resource, comprising: The terminal device detects a wake-up signal from the network device; If the terminal device determines not to wake up the terminal device without detecting the wake-up signal, or the terminal device determines to wake up the terminal device after detecting the wake-up signal, the terminal device sends a reference signal based on the resource.

3. The method of claim 1 or 2, wherein, Further comprising: The terminal device determines that the resource is in a DRX active time, and sends a reference signal based on the resource.

4. The method of claim 1, wherein, The resource is a time window; The terminal device determines that the resource is in a DRX inactive time, and sends a reference signal based on the resource, comprising: The terminal device determines that the time window is in a DRX inactive time, and the terminal device sends the reference signal in the time window.

5. The method of claim 4, wherein, The time window is a DRX duration, or a time period in the DRX duration, or a time period before the DRX duration.

6. The method of claim 4 or 5, wherein, The method further comprises: The terminal device receives third information from the network device, and the third information is used for configuring a second reference signal resource configured for the time window; The terminal device sends the reference signal in the time window, comprising: The terminal device sends the reference signal on the second reference signal resource in the time window.

7. The method of claim 1 or 2, wherein, The resource is a first reference signal resource; The terminal device determines that the resource is in a DRX inactive time, and sends a reference signal based on the resource, comprising: The terminal device determines that a time domain location corresponding to the resource is in a DRX inactive time, and the terminal device sends the reference signal on the first reference signal resource.

8. The method of claim 7, wherein, Further comprising: The terminal device receives fourth information from the network device, and the fourth information is used for configuring a third reference signal resource; If the terminal device determines to wake up the terminal device without detecting the wake-up signal, or the terminal device determines to wake up the terminal device after detecting the wake-up signal, the terminal device sends the reference signal on the third reference signal resource.

9. The method of claim 8, wherein, The frequency domain resource corresponding to the first reference signal resource is the same as the frequency domain resource corresponding to the third reference signal resource, and the period of the first reference signal resource is different from the period of the third reference signal resource.

10. The method of claim 1, wherein, The first time length is N DRX cycles, the resource is a first DRX duration after the N DRX cycles, or the resource is a time period in the first DRX duration after the N DRX cycles, or the resource is a time period before the first DRX duration after the N DRX cycles, or the resource is M reference signal resources in the first DRX duration after the N DRX cycles, or the resource is M reference signal resources before the first DRX duration after the N DRX cycles, N and M being positive integers.

11. A reference signal receiving method, comprising: The method comprises: The network device sends first information to the terminal device; the first information is used for configuring a resource through which the terminal device can send a reference signal; The network device determines that the resource is in a DRX inactive time, and receives the reference signal from the terminal device based on the resource; The network device sends second information to the terminal device, and the second information is used for indicating a first time length, the first time length being a time length during which the terminal device is continuously not woken up; The network device receives the reference signal from the terminal device on the resource, comprising: The network device determines that the terminal device reaches the first time length, and receives the reference signal from the terminal device on the resource.

12. The method of claim 11, wherein, The network device receives the reference signal from the terminal device based on the resource, comprising: If the network device does not send a wake-up signal and determines not to wake up the terminal device, or sends a wake-up signal and the wake-up signal indicates not to wake up the terminal device, the network device receives the reference signal from the terminal device based on the resource.

13. The method of claim 11 or 12, wherein, Further comprising: The network device determines that the resource is in a DRX active time, and receives the reference signal from the terminal device based on the resource.

14. The method of claim 13, wherein, The resource is a time window; The network device determines that the resource is in a DRX inactive time, and receives the reference signal from the terminal device based on the resource, comprising: The network device determines that the time window is in a DRX inactive time, and receives the reference signal from the terminal device in the time window.

15. The method of claim 14, wherein, The time window is a DRX duration, or a time period in the DRX duration, or a time period before the DRX duration.

16. The method of claim 14 or 15, wherein, The method further comprises: The network device sends third information to the terminal device, and the third information is used for configuring a second reference signal resource configured for the time window; The network device receives the reference signal from the terminal device in the time window, comprising: The network device receives the reference signal from the terminal device on the second reference signal resource in the time window.

17. The method of claim 11 or 12, wherein, The resource is a first reference signal resource; The network device determines that the resource is in a DRX inactive time, and receives the reference signal from the terminal device based on the resource, comprising: The network device determines that the time domain position corresponding to the resource is in a DRX inactive time, and the network device receives the reference signal from the terminal device on the first reference signal resource.

18. The method of claim 17, wherein, Further comprising: The network device sends fourth information to the terminal device, and the fourth information is used for configuring a third reference signal resource. If the network device does not send a wake-up signal and determines to wake up the terminal device, or sends a wake-up signal and the wake-up signal indicates to wake up the terminal device, the network device receives the reference signal from the terminal device on the third reference signal resource.

19. The method of claim 18, wherein, The frequency domain resource corresponding to the first reference signal resource is the same as the frequency domain resource corresponding to the third reference signal resource, and the period of the first reference signal resource is different from the period of the third reference signal resource.

20. The method of claim 11, wherein, The first time length is N DRX cycles, the resource is the first DRX duration after the N DRX cycles, or the resource is a time period in the first DRX duration after the N DRX cycles, or the resource is a time period before the first DRX duration after the N DRX cycles, or the resource is M reference signal resources in the first DRX duration after the N DRX cycles, or the resource is M reference signal resources before the first DRX duration after the N DRX cycles, N and M are positive integers.

21. An apparatus, comprising: The device includes a transceiver, a processor and a memory; the memory stores program instructions; when the program instructions are executed, the device executes the method of any one of claims 1-20.

22. A chip, characterized by The chip is coupled with the memory in the electronic device, so that the chip invokes the program instructions stored in the memory during running, and realizes the method of any one of claims 1-20.

23. A computer-readable storage medium, characterized in that, The computer readable storage medium includes program instructions, when the program instructions are run on the device, the device executes the method of any one of claims 1-20.

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