Wireless communication method and communication device

Abstract

The present application provides a wireless communication method and a communication device. The method comprises: on the basis of first information, a terminal device determines whether to send a first sounding reference signal (SRS), wherein the first SRS is used for positioning the terminal device, and the first information comprises one or more of the following: a first time window, a resource configuration of the first SRS, and a resource configuration of a first signal or channel.

Description

Wireless communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method and communication device. Background Art

[0002] Currently, a terminal device can achieve positioning by sending a sounding reference signal (SRS). However, there is currently no suitable solution for how the terminal device should send the SRS.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and a communication device. Several aspects of the embodiments of the present application are introduced below.

[0005] In a first aspect, a wireless communication method is provided, including: a terminal device determines whether to send a first sounding reference signal SRS based on first information, the first SRS is used to locate the terminal device, and the first information includes one or more of the following: a first time window, a resource configuration of the first SRS, and a resource configuration of a first signal or channel.

[0006] In a second aspect, a wireless communication method is provided, including: a network device sends second information to a terminal device, where the second information is used to indicate the first time window, and the first time window is used by the terminal device to determine whether to send a first SRS.

[0007] According to a third aspect, a terminal device is provided, comprising: a determination unit configured to determine whether to send a first sounding reference signal SRS based on a first time window, wherein the first SRS is used to locate the terminal device.

[0008] In a fourth aspect, a network device is provided, comprising: a sending unit, configured to send second information to a terminal device, wherein the second information is used to indicate the first time window, and the first time window is used by the terminal device to determine whether to send a first SRS.

[0009] In a fifth aspect, a terminal device is provided, comprising: a memory, a processor and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes the method described in the first aspect.

[0010] In a sixth aspect, a network device is provided, comprising: a memory, a processor, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes the method described in the second aspect.

[0011] In a seventh aspect, a device is provided, comprising a processor for calling a program from a memory to execute the method as described in the first aspect or the second aspect.

[0012] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0016] Based on the above technical solution, the terminal device can determine whether to send the first SRS based on the first time window, the resource configuration of the first SRS and the resource configuration of the first signal or channel, thereby providing a clear solution for sending the first SRS. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a wireless communication system 100 used in an embodiment of the present application.

[0018] FIG2 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.

[0019] FIG3A is a first exemplary diagram showing a conflict between a first SRS and a transmission resource of a first signal or channel.

[0020] FIG3B is a second exemplary diagram showing a conflict between a first SRS and a transmission resource of a first signal or channel.

[0021] FIG. 3C is a third exemplary diagram showing a conflict between a first SRS and a transmission resource of a first signal or channel.

[0022] FIG. 3D is a fourth exemplary diagram showing a conflict between a first SRS and a transmission resource of a first signal or channel.

[0023] FIG4 is a schematic flowchart of a wireless communication method provided in another embodiment of the present application.

[0024] FIG5 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0025] FIG6 is a schematic block diagram of a network device provided in an embodiment of the present application.

[0026] FIG7 is a schematic block diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solution in this application will be described below with reference to the accompanying drawings.

[0028] Communication system architecture

[0029] Figure 1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 within the coverage area.

[0030] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0031] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0032] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0033] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through the base station.

[0034] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, modem or chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0036] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0037] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water; they can also be deployed in the air on aircraft, balloons, or satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0038] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0039] Reduced capability (RedCap) terminal devices

[0040] In some communication systems (such as 5G), large-bandwidth and low-latency communication scenarios have been studied, mainly including the following scenarios: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low latency communications (URLLC), and time-sensitive communication (TSC).

[0041] In the early days of communications technology, chip and terminal design was extremely complex, resulting in high R&D investment and prohibitive terminal costs for many actual deployment scenarios. Many applications require moderate speed, performance, power consumption, and cost. To meet these demands, RedCap emerged. RedCap terminals are designed for scenarios with lower performance requirements, including but not limited to the following three scenarios.

[0042] Scenario 1: Industrial wireless sensors. Compared with URLLC terminals, industrial wireless sensors have relatively low latency and reliability requirements. Furthermore, their equipment cost and power consumption are lower than those of URLLC and eMBB terminals.

[0043] Scenario 2: Video surveillance, which can be used in scenarios such as smart cities and industrial processes. In smart city scenarios, devices are primarily used for data collection and processing, enabling more efficient monitoring and control of urban resources and providing more effective services to city residents.

[0044] Scenario 3: Wearable devices. Examples include but are not limited to smart watches, rings, electronic health devices, and medical monitoring devices. These devices are typically small in size.

[0045] The above scenarios may have the following common requirements:

[0046] 1. Equipment cost: Compared with eMBB terminals of Release 15 / 16 (R15 / 16), the requirements for equipment cost and complexity are lower.

[0047] 2. Equipment size: smaller equipment size is required.

[0048] 3. Coverage: This is required to achieve coverage comparable to or similar to that of Release 15 / 16 eMBB terminals. If coverage is lost due to reducing the number of receiving antennas, bandwidth, power level, or other measures to reduce terminal device complexity, appropriate compensation will be required.

[0049] In addition to the three scenarios mentioned above, there is another scenario with different requirements and performance requirements as follows:

[0050] For scenario 1, the reliability requirement is 99.99%, the end-to-end latency is 100ms, the bit rate requirement is 2Mbps, the device is stationary, and the battery life is several years. Alternatively, for security-related sensors, the latency requirement can be 5-10ms.

[0051] For scenario 2, the bit rate requirement is 2-4 Mbps, the latency requirement is less than 500 ms, and the reliability requirement is 99.9-99.9%. The uplink traffic volume is relatively high. For high-end video, the bit rate requirement is 2-4 Mbps.

[0052] For scenario 3: Refer to the requirements of access category 4 in the LTE system, which requires a rate of 150 Mbps / 50 Mbps.

[0053] SRS-based positioning

[0054] The uplink sounding reference signal (SRS) is used for both uplink and downlink positioning. A terminal device sends the SRS to a network device, which then measures the relevant parameters of the SRS to locate the terminal device.

[0055] SRS related parameters may include, for example, observed time difference of arrival (OTDOA) or angle of arrival (AOA).

[0056] Exemplarily, SRS-based positioning techniques may include uplink time difference of arrival (UL-TDOA) and uplink angle of arrival (UL-AOA).

[0057] The positioning principle of UL-TDOA is to measure the arrival time difference of SRSs received by different network devices and determine the location information of the terminal device based on the arrival time difference.

[0058] The positioning principle of UL-AOA is to measure the uplink arrival angle of the SRS received by the network device and determine the location information of the terminal device based on the uplink arrival angle. The uplink arrival angle can refer to the angle between the SRS sent by the terminal device and a certain direction (such as the horizontal plane or the normal to the horizontal plane) when it reaches the network device. For example, the uplink arrival angle of the SRS sent by the terminal device can be the angle α between the SRS sent by the terminal device and the north direction when it reaches the network device.

[0059] In addition, the SRS-based positioning technology may also include other positioning technologies, such as a positioning technology based on multi-cell round trip time (Multi-RTT) or a positioning technology based on enhanced cell identity (E-CID).

[0060] Innovation in the Internet of Things is inseparable from the support of location services, especially in scenarios such as preventing the elderly or children from getting lost, parking space guidance, robot work trajectories in factories, and recording of cargo flow trajectories, which place high demands on positioning accuracy.

[0061] When performing positioning, the wider the bandwidth occupied by the reference signal used for positioning, the higher the positioning accuracy. Therefore, for SRS-based positioning, in order to ensure a certain positioning accuracy, the terminal device needs to be able to send SRS occupying a wider bandwidth.

[0062] Reducing Capacity: Terminal devices have lower performance requirements and limited bandwidth processing capabilities. When performing positioning, the positioning pilot bandwidth can be increased by sending and receiving SRS frequency hopping to improve positioning accuracy.

[0063] Frequency hopping (FH) is one of the most commonly used spread-spectrum methods in wireless communications. It involves discretely varying the carrier frequency of wireless transmission signals between the transmitting and receiving devices according to a predetermined algorithm or pattern. In other words, the carrier frequency used in wireless communications randomly changes according to a pseudo-random code.

[0064] Frequency hopping (FH) is a communication method that uses code sequences to perform multi-frequency frequency shift keying (FSK), a system that uses code-controlled carrier frequency hopping. From a time domain perspective, a FH signal is a multi-frequency FSK signal; from a frequency domain perspective, the FH signal's spectrum randomly hops at unequal intervals across a wide frequency band. As a digital form of spread-spectrum communication, FH utilizes a bandwidth several times greater than the original signal's bandwidth.

[0065] When a terminal device performs positioning by sending an SRS, there is no clear solution for how the terminal device should send the SRS. For example, there is currently no clear solution for how the terminal device should send the SRS to ensure the transmission of the SRS or to ensure the fairness of the transmission. For another example, the transmission resources of the SRS may conflict (or collide) with the transmission resources of other signals or channels (such as uplink signals or channels, downlink signals or channels). For example, the SRS conflicts with one or more of the physical uplink shared channel (PUSCH), the physical uplink control channel (PUCCH), the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH), and the synchronization signal block (SSB). In this scenario, there is currently no clear solution for how to send the SRS to maintain the fairness of signal or channel transmission.

[0066] Fig. 2 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application. The wireless communication method in Fig. 2 is executed by a terminal device, which may be the terminal device 110 in Fig. 1. The wireless communication method in Fig. 2 includes step S210.

[0067] In step S210, the terminal device determines whether to send a first SRS based on the first information. The terminal device may be a reduced capability (RedCap) terminal device, or the terminal device may be a non-reduced capability terminal device (ie, a normal terminal device).

[0068] The first SRS may be used to locate the terminal device. The SRS-based positioning method has been described in detail above and will not be repeated here.

[0069] The first SRS may be sent in a periodic manner or a non-periodic manner, which is not specifically limited in the embodiment of the present application.

[0070] The first information may include one or more of the following: a first time window, a resource configuration for the first SRS, and a resource configuration for the first signal or channel. The resource configuration for the first SRS is used to configure the transmission resources for the first SRS. The resource configuration for the first signal or channel is used to configure the transmission resources for the first signal or channel. The transmission resources may include time domain resources and / or frequency domain resources.

[0071] The resource configuration of the first SRS may be sent by the network device to the terminal device. The resource configuration of the first signal or channel may be sent by the network device to the terminal device.

[0072] The first signal or channel may be an uplink signal or channel; or, the first signal or channel may be a downlink signal or channel; or, the first signal or channel may include both uplink and downlink signals or channels. The uplink signal or channel may include one or more of PUSCH and PUCCH. The downlink signal or channel may include one or more of PDSCH, PDCCH, and SSB.

[0073] The first time window may be a periodic time window or a non-periodic time window.

[0074] The first time window can be defined by one or more of the following information: a start time, an end time, a period, or a duration. For example, the first time window can be determined based on the start time and the end time. For another example, the first time window can be determined based on the start time and the duration. For another example, the first time window can be determined based on the end time and the duration. For another example, if the first time window is a periodic time window, all time windows can be determined based on the position and period of a time window.

[0075] In some implementations, the first time window may be a time window predefined in a protocol, or the first time window may be a time window configured by the network device. The following will describe in detail how the network device configures the first time window.

[0076] The first SRS may be transmitted using a frequency hopping transmission method. The first SRS may be the SRS transmitted at a specific time during the frequency hopping process, or may be the entire SRS transmitted within a frequency hopping cycle. The specific method of frequency hopping has been described above and will not be repeated here. By frequency hopping, the first SRS is transmitted using different frequencies, which can increase the bandwidth of the SRS transmission, thereby improving positioning accuracy.

[0077] By introducing the first time window to determine whether to send the first SRS, a clear solution is provided for sending the first SRS, which is conducive to maintaining fairness in signal or channel transmission.

[0078] In some implementations, the transmission resources for the first SRS may be configured by the network device to the terminal device. For frequency hopping transmission, the network device may configure an SRS resource set for the terminal device, i.e., the SRS transmission resources include the SRS resource set. The SRS resource set may include the resources required by the terminal device to transmit the SRS on multiple frequencies. In some implementations, the network device may configure the SRS resource set for the terminal device via DCI.

[0079] In some implementations, if the first condition is met, the terminal device performs the second operation. The first condition is related to one or more of the first time window, the transmission resources of the first SRS, and the transmission resources of the first signal or channel. For example, the first condition may include that the transmission resources of the first SRS partially overlap with the first time window. For another example, the first condition may include that the transmission resources of the first signal or channel partially overlap with the first time window. For another example, the first condition may include that the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel. For another example, the first condition may include that the time at which the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel partially overlaps with the first time window. The above first conditions can be used alone or in combination with each other. For example, the first condition may include that the transmission resources of the first SRS partially overlap with the first time window and that the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel. For another example, the first condition may include that the transmission resources of the first signal or channel partially overlap with the first time window and that the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel. For the convenience of description, the time when the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel is referred to as the first conflict time hereinafter.

[0080] In some implementations, if the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, the terminal device may determine whether to send the first SRS based on the first time window. The above-mentioned transmission resources may include frequency domain resources and / or time domain resources.

[0081] In some embodiments, the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, which may mean that the transmission resources of the first SRS overlap with the transmission resources of the first signal or channel.

[0082] In some implementations, if the terminal device needs to perform bandwidth part (BWP) switching during the hopping process, the transmission resources (such as transmission time) of the first SRS need to include the time for BWP switching.

[0083] In some embodiments, the overlap of the transmission resources of the first SRS and the first signal or channel may include: the transmission resources of the first SRS completely overlap with the transmission resources of the first signal or channel, or the transmission resources of the first SRS include the transmission resources of the first signal or channel, or the transmission resources of the first signal or channel include the transmission resources of the first SRS, or the transmission resources of the first SRS partially overlap with the transmission resources of the first signal or channel. Figures 3A-3D illustrate several situations in which the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, which are described below.

[0084] It should be noted that Figures 3A to 3D are illustrated by taking the transmission of the first SRS and the first signal or channel on the same frequency domain resource as an example. The time for sending the first SRS is t1 to t2, and the time for transmitting the first signal or channel is t3 to t4.

[0085] As shown in FIG3A , the transmission resource of the first SRS completely overlaps with the transmission resource of the first signal or channel, and the time when the conflict occurs is t1 to t2 (or t3 to t4).

[0086] As shown in FIG3B , the time for transmitting the first signal or channel is t3-t4, the time for sending the first SRS is t1-t2, t1-t2 includes t3-t4, and the time when the first SRS collides with the first signal or channel is t3-t4.

[0087] As shown in FIG3C , the time for sending the first SRS is t1-t2, the time for transmitting the first signal or channel is t3-t4, t3-t4 includes t1-t2, and the time when the first SRS and the first signal or channel collide is t1-t2.

[0088] As shown in FIG3D , t1 to t2 partially overlap with t3 to t4, and the time when the first SRS collides with the first signal or channel is t3 to t2.

[0089] As mentioned above, the first SRS may be transmitted in a frequency hopping manner. Therefore, the transmission resource of the first SRS may include the transmission resource of the first SRS during one frequency hopping transmission or multiple frequency hopping transmissions.

[0090] The second operation may include one or more of the following: abandoning the transmission of the first SRS; transmitting the first SRS; not transmitting the first signal or channel. The first condition and the second operation are described in detail below.

[0091] In some implementations, the terminal device may determine whether to send the first SRS based on the overlap between the transmission resources of the first SRS and the first time window. As an example, if the transmission resources of the first SRS are within the first time window, the terminal device may send the first SRS instead of transmitting the first signal or channel, so as to ensure the transmission of the SRS within the first time window. As another example, if the transmission resources of the first SRS partially overlap with the first time window, the terminal device may abandon the transmission of the first SRS, or the terminal device may send the first SRS. For example, if the transmission resources of the first SRS partially overlap with the first time window, and the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, the terminal device may send the first SRS instead of transmitting the first signal or channel. For another example, if the transmission resources of the first SRS partially overlap with the first time window, and the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, the terminal device may not send the first SRS, but transmit the first signal or channel. As another example, if the transmission resources of the first SRS are outside the first time window, the terminal device may not transmit the first SRS. For example, if the transmission resource of the first SRS is outside the first time window and the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel, the terminal device may not send the first SRS but transmit the first signal or channel.

[0092] In some implementations, the terminal device may determine whether to send the first SRS based on the overlap of the transmission resources of the first signal or channel with the first time window. As an example, if the transmission resources of the first signal or channel are within the first time window, the terminal device may not transmit the first signal or channel (or send the first SRS). As another example, if the transmission resources of the first signal or channel partially overlap with the first time window, the terminal device may abandon the transmission of the first SRS, or the terminal device may send the first SRS without transmitting the first signal or channel. For example, if the transmission resources of the first signal or channel partially overlap with the first time window, and the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, the terminal device may send the first SRS without transmitting the first signal or channel. For another example, if the transmission resources of the first signal or channel partially overlap with the first time window, and the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel, the terminal device may not send the first SRS, but transmit the first signal or channel. As another example, if the transmission resource of the first signal or channel is outside the first time window, the terminal device may transmit the first signal or channel, thereby ensuring the transmission of the signal or channel outside the first time window. For example, if the transmission resource of the first signal or channel is outside the first time window and the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel, the terminal device may not send the first SRS but may transmit the first signal or channel.

[0093] In some implementations, if the time at which the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel partially overlaps with the first time window, the terminal device may abandon the transmission of the first SRS, or the terminal device may transmit the first SRS without transmitting the first signal or channel. This will be described in detail below.

[0094] The first condition mentioned above is related to partial resource overlap. Partial overlap here can mean that the resources only partially overlap, or it can mean that the resource overlap ratio is greater than or equal to a preset ratio. In other words, the terminal device can perform the second operation only when the resource overlap ratio is large. The preset ratio can be predefined by the protocol, or the preset ratio can be configured for the terminal device by the network device. The preset ratio can be 1 / 2. Of course, the preset ratio can also be other ratios, such as 1 / 3 or 1 / 4, etc., and this embodiment of the present application does not specifically limit this.

[0095] The overlap ratio may be determined by one or more of the following: the ratio of overlapping resources to the transmission resources of the first SRS; the ratio of overlapping resources to the transmission resources of the first signal or channel; or the ratio of overlapping resources to the first time window. For example, the first condition may include that the ratio of overlapping resources between the transmission resources of the first SRS and the first time window to the transmission resources of the first SRS is greater than or equal to a preset ratio. For another example, the first condition may include that the ratio of overlapping resources between the transmission resources of the first SRS and the first time window to the transmission resources of the first time window is greater than or equal to a preset ratio. For another example, the first condition may include that the ratio of overlapping resources between the transmission resources of the first signal or channel and the first time window to the transmission resources of the first signal or channel is greater than or equal to a preset ratio. For another example, the first condition may include that the ratio of overlapping resources between the transmission resources of the first signal or channel and the first time window to the transmission resources of the first time window is greater than or equal to a preset ratio. For another example, the first condition may include that the ratio of overlapping resources between the first conflict time and the first time window to the transmission resources of the first SRS is greater than or equal to a preset ratio. For another example, the first condition may include that the ratio of overlapping resources between the first conflict time and the first time window to the transmission resources of the first signal or channel is greater than or equal to a preset ratio. For another example, the first condition may include that a ratio of overlapping resources of the first conflict time and the first time window to the first time window is greater than or equal to a preset ratio.

[0096] In some implementations, the terminal device may determine whether to send the first SRS based on the time domain location of the conflicting resource and the first time window. For ease of description, the time domain location of the conflicting resource is referred to as the first time domain location below.

[0097] The terminal device may determine whether to send the first SRS based on the relative position relationship between the first time domain position and the first time window. The relative position relationship between the first time domain position and the first time window may include one or more of the following: the first time domain position is within the first time window, the first time domain position is outside the first time window, and the first time domain position partially overlaps with the first time window.

[0098] The relative position relationship between the first time domain position and the first time window is different, and the strategy of the terminal device sending the first SRS may also be different. The strategy of the terminal device sending the first SRS is described in detail below.

[0099] In some embodiments, if the time at which the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel is within a first time window, the terminal device performs a first operation, where the first operation includes: transmitting the first SRS without transmitting the first signal or channel. In other words, if the first time domain position is within the first time window, the terminal device may transmit the first SRS without transmitting the first signal or channel, thereby ensuring the transmission of the first SRS.

[0100] 3, which shows a situation where the first time domain position is within the first time window. The first time domain position may completely overlap with the first time window, or the length of the first time domain position is less than the length of the first time window, and the first time domain position is within the first time window.

[0101] As shown in FIG3A , the first time window is t5-t6, the first time domain position is t1-t2, and t1-t2 is within t5-t6.

[0102] As shown in FIG3B , the first time window is t5-t6, the first time domain position is t3-t4, and t3-t4 is within t5-t6.

[0103] As shown in FIG3C , the first time window is t5-t6, the first time domain position is t1-t2, and t1-t2 is within t5-t6.

[0104] As shown in FIG3D , the first time window is t5-t6, the first time domain position is t3-t2, and t3-t2 is within t5-t6.

[0105] In some embodiments, if the time at which the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel partially overlaps with the first time window, the terminal device may perform a third operation, which includes: not transmitting the first SRS, or transmitting the first SRS but not transmitting the first signal or channel. In other words, if the first time domain position partially overlaps with the first time window, the terminal device may perform the third operation.

[0106] If the first time domain position partially overlaps with the first time window, the terminal device may send the first SRS instead of transmitting the first signal or channel, or may not send the first SRS but transmit the first signal or channel. The specific strategy to be adopted may be determined by the terminal device itself or may be instructed to the terminal device by the network device.

[0107] If the terminal device transmits the first SRS but does not transmit the first signal or channel, the transmission of the first SRS can be guaranteed, thereby improving positioning performance. If the terminal device transmits the first signal or channel but does not transmit the first SRS, the transmission of the first signal or channel can be guaranteed.

[0108] In some embodiments, outside the first time window, the transmission of the first SRS is associated with whether the first uplink signal or channel is transmitted within an activated BWP. For example, if the first time domain position is outside the first time window, the terminal device may determine whether to transmit the first SRS based on whether the first uplink signal or channel is transmitted within the activated BWP.

[0109] In some embodiments, if the time at which the transmission resource of the first SRS conflicts with the transmission resource of the first uplink signal or channel is outside the first time window (or the first time domain position is outside the first time window), the terminal device may perform a third operation. The third operation includes one of the following: if the first uplink signal or channel is transmitted outside the activated BWP, sending the first SRS and not sending the first uplink signal or channel; if the first uplink signal or channel is transmitted within the activated BWP, sending the first uplink signal or channel and not sending the first SRS.

[0110] If the first uplink signal or channel is transmitted outside the activated BWP, it means that the first uplink signal or channel is transmitted within the inactivated BWP. When transmitting the first uplink signal or channel, the terminal device must first activate the BWP before transmitting the first uplink signal or channel. In some scenarios, the terminal device may not have enough time to prepare the first uplink signal or channel. Therefore, the terminal device can abandon the transmission of the first uplink signal or channel and ensure the transmission of the first SRS.

[0111] For example, the first uplink signal or channel may be scheduled or triggered by DCI, which may appear before or after the terminal device starts to send the first SRS using frequency hopping. If the DCI arrives late and the first uplink signal or channel transmission is outside the active BWP (UL BWP), the terminal device may not have enough time to prepare the first uplink signal or channel, and the terminal device may abandon the transmission of the first uplink signal or channel and ensure the transmission of the first SRS.

[0112] If the first uplink signal or channel transmission is within the activated BWP, the terminal device may have enough time to prepare the first uplink signal or channel. In this case, the terminal device can first ensure the transmission of the first uplink signal or channel and give up the transmission of the first SRS.

[0113] In some embodiments, the first signal or channel may be an SSB. If the transmission resource of the first SRS conflicts with the transmission resource of the SSB outside the first time window, the terminal device may prioritize transmission of the SSB and forgo transmission of the first SRS. By ensuring transmission of the SSB, synchronization between the terminal device and the network device can be maintained, thereby improving communication performance.

[0114] In some embodiments, the terminal device does not send the first SRS, which may be replaced by the terminal device giving up sending the first SRS, or the terminal device discarding the first SRS.

[0115] In some embodiments, as described above, the transmission mode of the first SRS may be a frequency hopping transmission mode, and the frequency hopping process may involve the switching of the BWP. After the hopping is completed, the terminal device may stay on the switched BWP or switch back to the activated BWP. In some implementations, if the time interval between two consecutive transmissions of the first SRS is greater than the first switching time, the terminal device may switch back to the activated BWP after the hopping is completed. The first switching time may be the time required to switch in and out of the activated BWP. The activated BWP may be the BWP used to transmit the first signal or channel. By switching back to the activated BWP, the transmission of the first signal or channel (or other signals or channels) can be guaranteed.

[0116] In some implementations, whether the terminal device needs to switch back to the activated BWP can be determined by the terminal device itself or indicated by the network device. In the case where the network device indicates the terminal device, if the first switching time is related to the hardware level of the terminal device, the network device may not know the first switching time of the terminal device. The terminal device can report the first switching time to the network device. In some embodiments, the network device can send a request message to the terminal device to request the first switching time. After receiving the request message, the terminal device can send the first switching time to the network device.

[0117] In some implementations, if the terminal device does not have a service with high latency requirements, or if the first signal or channel does not have high latency requirements, the terminal device may not switch back to the active BWP between two frequency hops. If the terminal device cannot determine the required latency for the service (or first signal or channel), the network device may send an indication to the terminal device to indicate whether the terminal device needs to switch back to the active BWP between two frequency hops.

[0118] The time interval between two consecutive transmissions of the first SRS can be understood as the time of a hopping process. A hopping process can refer to the process of the first SRS hopping from the first frequency to the second frequency when the first SRS is transmitted using frequency hopping. The time interval between two consecutive transmissions of the first SRS can be configured by the network device to the terminal device, or it can be predetermined by the protocol. Assuming that the first frequency and the second frequency are two adjacent frequencies in the frequency hopping process, the time interval between two consecutive transmissions of the first SRS can be the absolute value of the difference between the time when the terminal device sends the first SRS on the first frequency and the time when the terminal device sends the first SRS on the second frequency.

[0119] The first switching time refers to the time required for the terminal device to switch from an activated BWP to another inactivated BWP and then switch back to an activated BWP.

[0120] When the time interval between two consecutive transmissions of the first SRS is greater than the first switching time, it indicates that the terminal device has sufficient time to switch back to the activated BWP and transmit the first signal or channel (or other signals or channels). For example, the terminal device can switch from the first BWP to the second BWP, transmit the first SRS on the second BWP, and then switch back to the first BWP and transmit the uplink signal or channel on the first BWP.

[0121] In some embodiments, the first time window may overlap with the measurement gap. In this case, the terminal device may perform a fourth operation, which includes: sending the first SRS without performing downlink measurement, or performing downlink measurement without sending the first SRS.

[0122] The terminal device sends the first SRS and does not perform downlink measurement, which can be understood as the first time window is valid and the measurement gap is invalid. The terminal device performs downlink measurement and does not send the first SRS, which can be understood as the first time window is invalid and the measurement gap is valid.

[0123] During the measurement gap, the terminal device can measure the reference signals sent by the serving cell and / or neighboring cells to determine the signal quality of the serving cell and / or neighboring cells. If the terminal device does not perform downlink measurements, it means that the terminal device does not need to measure the reference signals sent by the serving cell and / or neighboring cells.

[0124] If the first time window overlaps with the measurement gap, the terminal device may send the first SRS without performing downlink measurement, or the terminal device may perform downlink measurement without sending the first SRS. The terminal device may select which operation to perform, or the network device may indicate to the terminal device.

[0125] In some embodiments, if the terminal device transmits a first SRS, the first SRS may be measured by a serving cell and / or a neighboring cell of the terminal device. For example, the serving cell may measure the first SRS transmitted by the terminal device, and / or the neighboring cell may measure the first SRS transmitted by the terminal device.

[0126] In some embodiments, the neighboring cell may have two execution strategies, one is to measure the first SRS sent by the terminal device, and the other is not to measure the first SRS sent by the terminal device. In some implementations, the neighboring cell may not measure the first SRS sent by the terminal device by default. If the neighboring cell is required to measure the first SRS, the serving cell or the positioning server may indicate the first time window to the neighboring cell. After receiving the indication information for indicating the first time window, the neighboring cell may measure the first SRS.

[0127] The first time window overlapping with the measurement gap may mean that the first time window partially overlaps with the measurement gap, or the first time window includes the measurement gap, or the measurement gap includes the first time window.

[0128] As can be seen from the above, the embodiment of the present application studies the strategy of sending the first SRS within the first time window and outside the second time window, which not only ensures the transmission of SRS, but also ensures the transmission of other signals or channels, which is conducive to ensuring the fairness of signal or channel transmission.

[0129] The first time window is introduced in detail below.

[0130] In some embodiments, the first time window may be one time period, or the first time window may include multiple time periods.

[0131] In some embodiments, the first time window may be a periodic time window or a non-periodic time window.

[0132] In some embodiments, the first time window may be predefined in the protocol, or the first time window may be indicated by the network device to the terminal device. For example, the network device may send second information to the terminal device, where the second information is used to indicate the first time window (see step S205 in FIG4 ).

[0133] The embodiments of the present application do not specifically limit the carrying manner of the second information. As an example, the second information may be carried in one or more of the following: radio resource control (RRC) signaling, high-layer signaling, downlink control information (DCI). For example, the second information may be carried in RRC signaling, and the network device may indicate the first time window to the terminal device through RRC signaling. For another example, the second information may be carried in high-layer signaling, and the network device may indicate the first time window to the terminal device through high-layer signaling. For another example, the second information may be carried in DCI, and the network device may indicate the first time window to the terminal device through DCI.

[0134] The above-mentioned high-layer signaling may include RRC signaling and / or MAC control element (MAC control element, MAC CE).

[0135] In some implementations, the first time window may be represented by one or more of a start time, an end time, and a duration.

[0136] In some implementations, the network device may indicate the start and / or end time of the first time window through DCI, either through higher layer signaling or the duration of the first time window. Flexibly indicating the start and / or end time of the first time window through DCI may increase the probability of SRS transmission triggered by DCI.

[0137] In some implementations, the terminal device may use a periodic first time window to send an aperiodic SRS, and the resource set used to transmit the SRS may be scheduled by DCI. In this case, the transmission time of the SRS may not completely overlap with the first time window.

[0138] In some implementations, the second information can be used to indicate the transmission resources of the first SRS, or in other words, the second information can be used to indicate the transmission resource set of the first SRS. The first time window can be determined based on the transmission resources of the first SRS, that is, the terminal device can determine the first time window based on the transmission resources of the first SRS. For example, the terminal device can determine the starting moment of the first time window based on the transmission resources of the earliest SRS in the time domain among the transmission resources of the first SRS. The terminal device can determine the end moment of the first time window based on the duration of the first time window, and the duration of the first time window can be configured to the terminal device by the network device; or, the terminal device can determine the end moment of the first time window based on the transmission resources of the latest (or latest) SRS in the time domain among the transmission resources of the SRS. In this way, the success rate of non-periodic SRS transmission can be improved.

[0139] In some implementations, the second information may be a bitmap, which may be used to indicate the first time window. For example, the network device may configure the first time window to the terminal device according to a certain pattern through high-layer signaling.

[0140] It should be noted that the starting time of the first time window may also be referred to as the starting position of the first time window, and the ending time of the first time window may also be referred to as the ending position of the first time window.

[0141] As mentioned earlier, frequency hopping technology can increase the system's receive or transmit bandwidth within limited hardware processing capabilities, improve anti-interference capabilities, and more efficiently utilize small frequencies, thereby increasing system capacity. When using frequency hopping technology for SRS-based positioning, the following issues must be considered.

[0142] Frequency selection and planning require efficient selection and planning of frequency hopping frequencies to avoid conflicts with other systems or interference sources. Improper frequency selection can lead to degraded signal quality and communication performance. During positioning processing, user signals are received by multiple base stations / transmission points, or users receive signals from multiple base stations / transmission points. This requires signal transmission to be planned across multiple base stations / transmission points. Furthermore, frequency planning also requires consideration of the time dimension.

[0143] Synchronization issues: Devices in a frequency-hopping system need to be synchronized to ensure they hop to the same frequency at the same time. Synchronization issues can cause communication failures between devices, impacting system performance.

[0144] Latency: Frequency hopping introduces the generation and synchronization of hopping sequences, which can increase communication latency. For real-time applications such as voice calls or video streaming, latency can be a significant issue.

[0145] Power consumption: Frequency hopping systems may require more complex circuits and algorithms to support frequency hopping, which may result in higher power consumption for the device. This can be a critical issue for mobile devices that rely on battery power.

[0146] Equipment complexity: Frequency hopping systems are more complex than fixed-frequency systems, which can increase the difficulty of design, maintenance, and troubleshooting.

[0147] Frequency selection algorithm design: Designing an effective frequency selection algorithm is crucial to the performance of the frequency hopping system. An inappropriate algorithm may lead to insufficient frequency selection or frequent switching, affecting communication quality.

[0148] Security: Frequency hopping technology is often used to improve the security of communications, but if the encryption algorithm is not strong enough or is implemented improperly, it may face security threats.

[0149] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 4 . The device embodiment of the present application is described in detail below in conjunction with Figures 5 to 7 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0150] FIG5 is a schematic block diagram of a terminal device provided in an embodiment of the present application. The terminal device may be any of the terminal devices described above, and the terminal device includes:

[0151] The determination unit 510 is used to determine whether to send a first sounding reference signal SRS based on first information, where the first SRS is used to locate the terminal device, and the first information includes one or more of the following: a first time window, a resource configuration of the first SRS, and a resource configuration of a first signal or channel.

[0152] In some implementations, the terminal device further includes an execution unit, which is used to: if the time when the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel is within the first time window, perform a first operation, the first operation including: sending the first SRS and not transmitting the first signal or channel.

[0153] In some implementations, if a first condition is met, the terminal device performs a second operation, and the first condition includes one or more of the following: the transmission resources of the first SRS partially overlap with the first time window; the transmission resources of the first signal or channel partially overlap with the first time window; the time when the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel partially overlaps with the first time window; the second operation includes one of the following: abandoning the transmission of the first SRS; sending the first SRS; not transmitting the first signal or channel.

[0154] In some implementations, the partial overlap includes an overlap ratio of resources being greater than or equal to a preset ratio.

[0155] In some implementations, the overlap ratio includes one or more of the following: the ratio of overlapping resources to transmission resources of the first SRS; the ratio of overlapping resources to transmission resources of the first signal or channel; and the ratio of overlapping resources to the first time window.

[0156] In some implementations, the preset ratio is 1 / 2.

[0157] In some implementations, the preset ratio is predefined by a protocol.

[0158] In some implementations, the execution unit is further used to: if the time when the transmission resources of the first SRS conflict with the transmission resources of the first signal or channel partially overlaps with the first time window, perform a third operation, and the third operation includes one of the following: abandoning the transmission of the first SRS; sending the first SRS without transmitting the first signal or channel.

[0159] In some implementations, outside the first time window, the transmission of the first SRS is associated with whether the first uplink signal or channel is transmitted within an activated BWP.

[0160] In some implementations, if the time when the transmission resources of the first SRS conflict with the transmission resources of the first uplink signal or channel is outside the first time window, the terminal device performs a third operation, and the third operation includes one of the following: if the first uplink signal or channel transmission is outside the activated bandwidth part BWP, the first SRS is sent and the first uplink signal or channel is not sent; if the first uplink signal or channel transmission is within the activated BWP, the first uplink signal or channel is sent and the first SRS is not sent.

[0161] In some implementations, the execution unit is further configured to: not send the first SRS if a time at which a transmission resource of the first SRS conflicts with a transmission resource of a synchronization signal block SSB is outside the first time window.

[0162] In some implementations, the first SRS is sent in a frequency hopping manner; the execution unit is also used to: if the time interval between two consecutive transmissions of the first SRS is greater than a first switching time, switch back to the activated BWP after the jump is completed, and the first switching time is the time required to switch in and out of the activated BWP.

[0163] In some implementations, the execution unit is further configured to: if the first time window overlaps with the measurement gap, perform a fourth operation, the fourth operation comprising one of: sending the first SRS without performing downlink measurement; performing downlink measurement without sending the first SRS.

[0164] In some implementations, the first SRS is measured by a serving cell and / or a neighboring cell of the terminal device.

[0165] In some implementations, the first time window is a periodic time window or a non-periodic time window.

[0166] In some implementations, the terminal device further includes: a receiving unit, configured to receive second information sent by a network device, where the second information is used to indicate the first time window.

[0167] In some implementations, the second information is carried in one or more of the following: radio resource control RRC signaling; high-layer signaling; downlink control information DCI.

[0168] In some implementations, the second information satisfies one or more of the following: the second information is used to indicate the transmission resources of the first SRS, and the first time window is determined based on the transmission resources of the first SRS; the second information is a bit map, and the bit map is used to indicate the first time window.

[0169] In some implementations, the second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

[0170] In some implementations, the first SRS is sent in a frequency hopping manner.

[0171] In some implementations, the terminal device is a reduced-capability terminal device.

[0172] FIG6 is a schematic block diagram of a network device provided in an embodiment of the present application, which may be any of the network devices described above. The network device in FIG6 includes:

[0173] The sending unit 610 is configured to send second information to the terminal device, where the second information is used to indicate the first time window, and the first time window is used by the terminal device to determine whether to send the first SRS.

[0174] In some implementations, the first time window is a periodic time window or a non-periodic time window.

[0175] In some implementations, the second information is carried in one or more of the following: RRC signaling; high-layer signaling; DCI.

[0176] In some implementations, the second information satisfies one or more of the following: the second information is used to indicate the transmission resources of the first SRS, and the first time window is determined based on the transmission resources of the first SRS; the second information is a bit map, and the bit map is used to indicate the first time window.

[0177] In some implementations, the second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

[0178] In some implementations, the first SRS is sent in a frequency hopping manner.

[0179] In some implementations, the terminal device is a reduced-capability terminal device.

[0180] Figure 7 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 7 indicate that the unit or module is optional. The device 700 can be used to implement the method described in the above method embodiment. The device 700 can be a chip or a communication device. The communication device can be any of the communication devices described above. For example, the communication device can be a terminal device or a network device.

[0181] The device 700 may include one or more processors 710. The processor 710 may support the device 700 to implement the method described in the method embodiment above. The processor 710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0182] The apparatus 700 may further include one or more memories 720. The memories 720 store programs that can be executed by the processor 710, causing the processor 710 to perform the methods described in the above method embodiments. The memories 720 may be independent of the processor 710 or integrated into the processor 710.

[0183] The apparatus 700 may further include a transceiver 730. The processor 710 may communicate with other devices or chips via the transceiver 730. For example, the processor 710 may transmit and receive data with other devices or chips via the transceiver 730.

[0184] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0185] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0186] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method executed by the communication device in each embodiment of the present application.

[0187] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0188] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0189] In the embodiments of this application, the term "include" can refer to direct inclusion or indirect inclusion. Alternatively, the term "include" in the embodiments of this application can be replaced with "indicates" or "is used to determine." For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B."

[0190] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0191] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0192] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0193] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0194] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0195] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0196] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0197] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0198] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0199] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. 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 a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0200] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device determines whether to send a first sounding reference signal SRS based on first information, where the first SRS is used to locate the terminal device. The first information includes one or more of the following: a first time window, a resource configuration of the first SRS, and a resource configuration of a first signal or channel.

2. The method according to claim 1, characterized in that The method further comprises: If a time when the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel is within the first time window, the terminal device performs a first operation, where the first operation includes: The first SRS is sent without transmitting the first signal or channel.

3. The method according to claim 1, characterized in that If a first condition is met, the terminal device performs a second operation, where the first condition includes one or more of the following: The transmission resource of the first SRS partially overlaps with the first time window; The transmission resource of the first signal or channel partially overlaps with the first time window; A time when the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel partially overlaps with the first time window; The second operation includes one of the following: abandoning sending of the first SRS; sending the first SRS; The first signal or channel is not transmitted.

4. The method according to claim 3, characterized in that The partial overlap includes that the overlapping ratio of resources is greater than or equal to a preset ratio.

5. The method according to claim 4, characterized in that The overlap ratio includes one or more of the following: a ratio of the overlapping resources to the transmission resources of the first SRS; a ratio of the overlapping resources to the transmission resources of the first signal or channel; The proportion of overlapping resources in the first time window.

6. The method according to claim 4 or 5, characterized in that The preset ratio is 1 / 2.

7. The method according to any one of claims 4 to 6, characterized in that The preset ratio is predefined by the protocol.

8. The method according to claim 1, characterized in that Outside the first time window, the sending of the first SRS is associated with whether the first uplink signal or channel is transmitted within the activated bandwidth part BWP.

9. The method according to claim 8, characterized in that The method further comprises: If a time when the transmission resource of the first SRS conflicts with the transmission resource of the first uplink signal or channel is outside the first time window, the terminal device performs a third operation, where the third operation includes one of the following: If the first uplink signal or channel transmission is outside the activated BWP, sending the first SRS and not sending the first uplink signal or channel; If the first uplink signal or channel transmission is within the activated BWP, the first uplink signal or channel is sent, and the first SRS is not sent.

10. The method according to claim 1, characterized in that The method further comprises: If the time when the transmission resource of the first SRS conflicts with the transmission resource of the synchronization signal block SSB is outside the first time window, the terminal device does not send the first SRS.

11. The method according to claim 1, characterized in that The first SRS is sent in a frequency hopping manner, and the method further includes: If the time interval between two consecutive transmissions of the first SRS is greater than a first switching time, the terminal device switches back to the activated BWP after the jump is completed. The first switching time is the time required to switch in and out of the activated BWP.

12. The method according to claim 1, characterized in that The method further comprises: If the first time window overlaps with a measurement gap, the terminal device performs a fourth operation, where the fourth operation includes one of the following: Sending the first SRS without performing downlink measurement; Perform downlink measurement without sending the first SRS.

13. The method according to claim 12, characterized in that The first SRS is measured by the serving cell and / or neighboring cell of the terminal device.

14. The method according to any one of claims 1 to 13, characterized in that The first time window is a periodic time window or a non-periodic time window.

15. The method according to any one of claims 1 to 14, characterized in that The method further comprises: The terminal device receives second information sent by the network device, where the second information is used to indicate the first time window.

16. The method according to claim 15, characterized in that The second information is carried in one or more of the following: Radio Resource Control (RRC) signaling; High-layer signaling; Downlink Control Information DCI.

17. The method according to claim 15 or 16, characterized in that The second information satisfies one or more of the following: The second information is used to indicate a transmission resource of the first SRS, and the first time window is determined based on the transmission resource of the first SRS; The second information is a bitmap, and the bitmap is used to indicate the first time window.

18. The method according to any one of claims 15 to 17, characterized in that The second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

19. The method according to any one of claims 1 to 18, characterized in that The first SRS is sent in a frequency hopping manner.

20. The method according to any one of claims 1 to 19, characterized in that The terminal device is a reduced-capability terminal device.

21. A wireless communication method, characterized in that: include: The network device sends second information to the terminal device, where the second information is used to indicate the first time window, and the first time window is used by the terminal device to determine whether to send a first sounding reference signal SRS.

22. The method according to claim 21, characterized in that The first time window is a periodic time window or a non-periodic time window.

23. The method according to claim 21 or 22, characterized in that The second information is carried in one or more of the following: Radio Resource Control (RRC) signaling; High-layer signaling; Downlink Control Information DCI.

24. The method according to any one of claims 21 to 23, characterized in that The second information satisfies one or more of the following: The second information is used to indicate a transmission resource of the first SRS, and the first time window is determined based on the transmission resource of the first SRS; The second information is a bitmap, and the bitmap is used to indicate the first time window.

25. The method according to any one of claims 21 to 24, characterized in that The second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

26. The method according to any one of claims 21 to 25, characterized in that The first SRS is sent in a frequency hopping manner.

27. The method according to any one of claims 21 to 26, characterized in that The terminal device is a reduced-capability terminal device.

28. A terminal device, characterized in that: include: A determination unit is used to determine whether to send a first sounding reference signal SRS based on first information, where the first SRS is used to locate the terminal device, and the first information includes one or more of the following: a first time window, a resource configuration of the first SRS, and a resource configuration of a first signal or channel.

29. The terminal device according to claim 28, characterized in that Also includes an execution unit, The execution unit is configured to: if a time when the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel is within the first time window, perform a first operation, the first operation including: The first SRS is sent without transmitting the first signal or channel.

30. The terminal device according to claim 28, characterized in that The execution unit is further configured to: If the first condition is met, the second operation is performed, where the first condition includes one or more of the following: The transmission resource of the first SRS partially overlaps with the first time window; The transmission resource of the first signal or channel partially overlaps with the first time window; A time when the transmission resource of the first SRS conflicts with the transmission resource of the first signal or channel partially overlaps with the first time window; The second operation includes one of the following: abandoning sending of the first SRS; sending the first SRS; The first signal or channel is not transmitted.

31. The terminal device according to claim 30, characterized in that The partial overlap includes that the overlapping ratio of resources is greater than or equal to a preset ratio.

32. The terminal device according to claim 31, characterized in that The overlap ratio includes one or more of the following: a ratio of the overlapping resources to the transmission resources of the first SRS; a ratio of the overlapping resources to the transmission resources of the first signal or channel; The proportion of overlapping resources in the first time window.

33. The terminal device according to claim 31 or 32, characterized in that: The preset ratio is 1 / 2.

34. The terminal device according to any one of claims 31 to 33, characterized in that: The preset ratio is predefined by the protocol.

35. The terminal device according to claim 28, characterized in that Outside the first time window, the sending of the first SRS is associated with whether the first uplink signal or channel is transmitted within the activated bandwidth part BWP.

36. The terminal device according to claim 35, characterized in that The execution unit is further configured to: if a time when the transmission resource of the first SRS conflicts with the transmission resource of the first uplink signal or channel is outside the first time window, perform a third operation, the third operation including one of the following: If the first uplink signal or channel transmission is outside the activated BWP, sending the first SRS and not sending the first uplink signal or channel; If the first uplink signal or channel transmission is within the activated BWP, the first uplink signal or channel is sent, and the first SRS is not sent.

37. The terminal device according to claim 28, characterized in that The execution unit is further configured to: not send the first SRS if a time at which a transmission resource of the first SRS conflicts with a transmission resource of a synchronization signal block SSB is outside the first time window.

38. The terminal device according to claim 28, characterized in that The first SRS is sent in a frequency hopping manner; The execution unit is further configured to: switch back to the activated BWP after the jump is completed if the time interval between two consecutive transmissions of the first SRS is greater than a first switching time, where the first switching time is the time required to switch in and out of the activated BWP.

39. The terminal device according to claim 28, characterized in that The executing unit is further configured to: if the first time window overlaps with the measurement gap, perform a fourth operation, where the fourth operation includes one of the following: Sending the first SRS without performing downlink measurement; Perform downlink measurement without sending the first SRS.

40. The terminal device according to claim 39, characterized in that The first SRS is measured by the serving cell and / or neighboring cell of the terminal device.

41. The terminal device according to any one of claims 28 to 40, characterized in that: The first time window is a periodic time window or a non-periodic time window.

42. The terminal device according to any one of claims 28 to 41, characterized in that: Also includes: A receiving unit is used to receive second information sent by a network device, where the second information is used to indicate the first time window.

43. The terminal device according to claim 42, characterized in that The second information is carried in one or more of the following: Radio Resource Control (RRC) signaling; High-layer signaling; Downlink Control Information DCI.

44. The terminal device according to claim 42 or 43, characterized in that The second information satisfies one or more of the following: The second information is used to indicate a transmission resource of the first SRS, and the first time window is determined based on the transmission resource of the first SRS; The second information is a bitmap, and the bitmap is used to indicate the first time window.

45. The terminal device according to any one of claims 42 to 44, characterized in that: The second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

46. ​​The terminal device according to any one of claims 28 to 45, characterized in that: The first SRS is sent in a frequency hopping manner.

47. The terminal device according to any one of claims 28 to 46, characterized in that: The terminal device is a reduced-capability terminal device.

48. A network device, characterized in that include: A sending unit is configured to send second information to a terminal device, wherein the second information is used to indicate the first time window. The window is used by the terminal device to determine whether to send a first sounding reference signal SRS.

49. The network device according to claim 48, wherein: The first time window is a periodic time window or a non-periodic time window.

50. The network device according to claim 48 or 49, characterized in that: The second information is carried in one or more of the following: Radio Resource Control (RRC) signaling; High-layer signaling; Downlink Control Information DCI.

51. The network device according to any one of claims 48 to 50, characterized in that: The second information satisfies one or more of the following: The second information is used to indicate a transmission resource of the first SRS, and the first time window is determined based on the transmission resource of the first SRS; The second information is a bitmap, and the bitmap is used to indicate the first time window.

52. The network device according to any one of claims 48 to 51, characterized in that: The second information is used to indicate one or more of a start time, a duration, and an end time of the first time window.

53. The network device according to any one of claims 48 to 52, characterized in that: The first SRS is sent in a frequency hopping manner.

54. The network device according to any one of claims 48 to 53, characterized in that: The terminal device is a reduced-capability terminal device.

55. A terminal device, characterized in that: The terminal device comprises a memory and a processor, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory, so that the terminal device executes the method according to any one of claims 1 to 20.

56. A network device, characterized in that The network device comprises a memory, a processor and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes the method according to any one of claims 21 to 27.

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