Method and apparatus for signal transmission

Abstract

The embodiment of the present application provides a method and device for signal transmission, characterized in that the method comprises the following steps: a first device transmits at least one first signal on a first carrier through a first beam, wherein the first beam comprises at least one beam; and the first device receives at least one second signal transmitted by a second device on the first carrier.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to methods and apparatus for signal transmission. Background Technology

[0002] On unlicensed spectrum, communication devices follow the "Listen Before Talk (LBT)" principle. That is, before transmitting signals on a channel in unlicensed spectrum, the communication device needs to perform channel listening. Only when the channel listening result is that the channel is idle can the communication device transmit signals. If the channel listening result of the communication device on a channel in unlicensed spectrum is that the channel is busy, the communication device cannot transmit signals.

[0003] Wireless Fidelity (Wi-Fi) can employ Carrier Sense Multiple Access with Collision Avoidance (CSMA / CA) mechanisms on unlicensed spectrum. Specifically, it can use Request To Send / Clear To Send (RTS / CTS) interaction mechanisms for channel access. For example, if device 1 wants to transmit data to device 2, it needs to send an RTS signal on an available channel to indicate that device 1 wants to send data to device 2. After receiving the RTS signal, device 2 can send a CTS signal to all devices on an available channel, indicating that device 2 is ready. In this case, device 1 can send data to device 2, while other devices cannot send data to device 2. After receiving the CTS signal sent by device 2, device 1 can transmit data to device 2 on the carrier on which the CTS signal was received.

[0004] However, when New Radio (NR) technology is applied to unlicensed carriers, beamforming technology is introduced. In this case, how to perform channel sensing to achieve data transmission is a problem worth studying. Summary of the Invention

[0005] This application provides a method and apparatus for signal transmission, which can realize directional channel sensing and improve the spatial multiplexing transmission capability of the cell.

[0006] In a first aspect, a method for signal transmission is provided, the method comprising: a first device transmitting at least one first signal via a first beam on a first carrier, the first beam including at least one beam; and the first device receiving at least one second signal transmitted by a second device on the first carrier.

[0007] Therefore, the first device can transmit the at least one first signal using the first beam on the first carrier, and at the same time receive at least one second signal from the second device via the first carrier. This directional interaction method is beneficial to improving the spatial multiplexing transmission capability of the cell.

[0008] Optionally, the first carrier can be a carrier on an unlicensed spectrum.

[0009] Optionally, the first device is a terminal device or a network device.

[0010] Optionally, in embodiments of this application, the first signal and the second signal can be reference signals. For example, the first signal or the second signal can be one or more of PSS, SSS, CSI-RS, DMRS, PT-RS, and SRS. Alternatively, the first signal or the second signal can be a newly introduced reference signal by the system for interactive purposes.

[0011] Optionally, the second device may transmit the at least one second signal in an omnidirectional manner.

[0012] In some possible implementations, the first device transmits at least one first signal on a first carrier via a first beam, including: the first device transmitting the at least one first signal on the first carrier via the first beam using a first subcarrier spacing, wherein the first subcarrier spacing is specified by a communication system, or the first subcarrier spacing is pre-specified by a network device, or the first subcarrier spacing is determined by a subcarrier spacing configured by the network device for data transmission.

[0013] In some possible implementations, the at least one first signal is used to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

[0014] In some possible implementations, the first device receiving at least one second signal transmitted by the second device on the first carrier includes: the first device receiving the at least one second signal transmitted by the second device using a second subcarrier interval on the first carrier, wherein the second subcarrier interval is the same as the first subcarrier interval, or the second subcarrier interval is specified by the communication system, or the second subcarrier interval is pre-specified by the network device, or the second subcarrier interval is determined by the subcarrier interval configured by the network device for data transmission.

[0015] In some possible implementations, the first device receiving at least one second signal transmitted by the second device on the first carrier includes: the first device receiving the at least one second signal transmitted by the second device via a second beam on the first carrier, wherein the second beam includes at least one beam, and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0016] In some possible implementations, the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, including: the spatial domain coverage area corresponding to the second beam is a subset of the spatial domain coverage area corresponding to the first beam.

[0017] In some possible implementations, the at least one second signal is used to determine beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the second device and the suboptimal beam among at least one beam included in the first beam as measured by the second device.

[0018] In some possible implementations, the first device transmits the at least one first signal via the first beam on a first time-domain resource on the first carrier, and the first device receives the at least one second signal transmitted by the second device on a second time-domain resource on the first carrier, wherein the time length between the second time-domain resource and the first time-domain resource is defined by the communication system, or the time length between the second time-domain resource and the first time-domain resource is pre-specified by the network device.

[0019] Therefore, after the first device sends the at least one first signal, it can receive the signal after the time interval, instead of continuously performing blind detection on the channel to receive the feedback signal from the second device after sending the at least one first signal. This reduces the power consumption of the first device and improves the performance of the communication system.

[0020] In some possible implementations, the method further includes: the first device transmitting a first physical channel to the second device on the first carrier.

[0021] Optionally, in some embodiments, the transmission of the first physical channel from the first device to the second device may be omnidirectional.

[0022] In some possible implementations, the first device transmits the first physical channel to the second device via a fourth beam on the first carrier, wherein the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0023] In some possible implementations, the fourth beam is one of the beams in the first beam, or the fourth beam is one of the beams in the third beam.

[0024] In some possible implementations, the method further includes: the first device receiving at least one second signal transmitted by the third device on the first carrier.

[0025] In some possible implementations, the method further includes: the first device transmitting a second physical channel to the third device on the first carrier.

[0026] In a second aspect, a method for signal transmission is provided, the method comprising: a second device receiving on a first carrier at least one first signal transmitted by a first device via a first beam, the first beam including at least one beam; and the second device performing channel detection on the first carrier to determine whether to transmit at least one second signal.

[0027] In some possible implementations, the method further includes: if channel detection is successful on the first carrier, the second device transmits the at least one second signal on the first carrier.

[0028] In some possible implementations, the second device transmitting the at least one second signal on the first carrier includes: the second device transmitting the at least one second signal on the first carrier using a second subcarrier interval, wherein the second subcarrier interval is specified by the communication system, or the second subcarrier interval is pre-specified by the network device, or the second subcarrier interval is determined by the subcarrier interval configured by the network device for data transmission.

[0029] In some possible implementations, the second device transmitting the at least one second signal on the first carrier includes: the second device transmitting the at least one second signal on the first carrier via a second beam, wherein the second beam includes at least one beam, and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0030] In some possible implementations, the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, including: the spatial domain coverage area corresponding to the second beam is a subset of the spatial domain coverage area corresponding to the first beam.

[0031] In some possible implementations, the at least one second signal is used to determine beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the second device and the suboptimal beam among at least one beam included in the first beam as measured by the second device.

[0032] In some possible implementations, the second device receives at least one first signal transmitted by the first device via a first beam on a first time-domain resource on the first carrier, and the second device performs channel detection on a second time-domain resource on the first carrier to determine whether to transmit at least one second signal, wherein the time length between the second time-domain resource and the first time-domain resource is specified by the communication system, or the time length between the second time-domain resource and the first time-domain resource is pre-specified by the network device.

[0033] In some possible implementations, the second device receiving at least one first signal transmitted by the first device via a first beam on a first carrier includes: the second device receiving the at least one first signal transmitted by the first device via a first beam using a first subcarrier spacing on the first carrier, wherein the first subcarrier spacing is defined by a communication system, or the first subcarrier spacing is pre-specified by a network device, or the first subcarrier spacing is determined by a subcarrier spacing configured by the network device for data transmission.

[0034] In some possible implementations, the at least one first signal is used to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

[0035] Thirdly, an apparatus for signal transmission is provided, for performing the method of the first aspect or any possible implementation thereof. Specifically, the apparatus includes units for performing the method of the first aspect or any possible implementation thereof.

[0036] Fourthly, a device for signal transmission is provided, comprising: a memory, a processor, an input interface, and an output interface. The memory, processor, input interface, and output interface are connected via a bus system. The memory stores instructions, and the processor executes the instructions stored in the memory to perform the methods described in the first aspect or any possible implementation thereof.

[0037] Fifthly, an apparatus for signal transmission is provided, for performing the method in the second aspect or any possible implementation thereof. Specifically, the apparatus includes units for performing the method in the second aspect or any possible implementation thereof.

[0038] Sixthly, a device for signal transmission is provided, comprising: a memory, a processor, an input interface, and an output interface. The memory, processor, input interface, and output interface are connected via a bus system. The memory stores instructions, and the processor executes the instructions stored in the memory to perform the methods described in the second aspect or any possible implementation thereof.

[0039] A seventh aspect provides a computer storage medium for storing computer software instructions for performing the methods of the first aspect or any possible implementation thereof, comprising a program designed for performing the aspects.

[0040] Eighthly, a computer program product including instructions is provided, which, when run on a computer, causes the computer to perform the method of the first aspect or any optional implementation thereof.

[0041] A ninth aspect provides a computer storage medium for storing computer software instructions for performing the methods of the second aspect or any possible implementation thereof, comprising a program designed for performing the aspects.

[0042] In a tenth aspect, a computer program product including instructions is provided, which, when run on a computer, causes the computer to perform the method of the second aspect or any optional implementation thereof. Attached Figure Description

[0043] Figure 1 This is a schematic flowchart of a method for signal transmission according to an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of an example of a method for signal transmission according to an embodiment of this application;

[0045] Figure 3This is another schematic diagram of a method for signal transmission according to an embodiment of this application;

[0046] Figure 4 This is a schematic flowchart of a method for signal transmission according to another embodiment of this application;

[0047] Figure 5 This is a schematic block diagram of a device for signal transmission according to an embodiment of this application;

[0048] Figure 6 This is a schematic block diagram of a device for signal transmission according to another embodiment of this application.

[0049] Figure 7 This is a schematic block diagram of a device for signal transmission according to an embodiment of this application;

[0050] Figure 8 This is a schematic block diagram of a device for signal transmission according to another embodiment of this application. Detailed Implementation

[0051] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0052] The technical solutions in this application will now be described with reference to the accompanying drawings in the embodiments of this application.

[0053] The embodiments of this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems, or other communication systems, etc.

[0054] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC) communication, and vehicle-to-vehicle (V2V) communication. The embodiments of this application can also be applied to these communication systems.

[0055] Optionally, the communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, or standalone (SA) network deployment scenarios.

[0056] The embodiments of this application do not limit the spectrum to which the application is applied. For example, the embodiments of this application can be applied to licensed spectrum or unlicensed spectrum.

[0057] This application describes various embodiments in conjunction with network devices and terminal devices, wherein: the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc. The terminal device may be a station (ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a next-generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0058] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0059] Network devices can be devices used to communicate with mobile devices. Network devices can be access points (APs) in WLANs, base stations (BTSs) in GSM or CDMA, base stations (NodeBs, NBs) in WCDMA, evolved base stations (eNBs or eNodeBs) in LTE, relay stations or access points, or in-vehicle devices, wearable devices, and network devices (gNBs) in NR networks, or network devices in future evolved PLMN networks, etc.

[0060] In this embodiment, the network device provides services to the cell, and the terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0061] Optionally, the downlink physical channels in this application embodiment may include a Physical Downlink Control Channel (PDCCH), an Enhanced Physical Downlink Control Channel (EPDCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Hybrid ARQ Indicator Channel (PHICH), a Physical Multicast Channel (PMCH), a Physical Broadcast Channel (PBCH), and so on. Downlink reference signals may include downlink synchronization signals, phase tracking reference signals (PT-RS), downlink demodulation reference signals (DMRS), and channel state information-reference signals (CSI-RS), etc. The downlink synchronization signal can be used for measurement of communication equipment accessing the network and radio resource management; the downlink DMRS can be used for demodulation of the downlink channel; the CSI-RS can be used for downlink channel measurement, downlink time-frequency synchronization, or phase tracking; and the PT-RS can also be used for downlink channel measurement, downlink time-frequency synchronization, or phase tracking. It should be understood that embodiments of this application may include downlink physical channels or downlink reference signals with the same names but different functions as described above, or they may include downlink physical channels or downlink reference signals with different names but the same functions as described above; this application is not limited in this respect.

[0062] Optionally, the uplink physical channel in this application embodiment may include a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), etc. The uplink reference signal may include an uplink demodulation reference signal (DMRS), a sounding reference signal (SRS), a phase tracking reference signal (PT-RS), etc. The uplink DMRS can be used for demodulation of the uplink channel, the SRS can be used for uplink channel measurement, uplink time-frequency synchronization, or phase tracking, and the PT-RS can also be used for uplink channel measurement, uplink time-frequency synchronization, or phase tracking. It should be understood that the embodiments in this application may include uplink physical channels or uplink reference signals with the same names but different functions as described above, or they may include uplink physical channels or uplink reference signals with different names but the same functions as described above; this application is not limited in this regard.

[0063] The following is combined Figures 1 to 4 The method for signal transmission according to embodiments of this application will be described. It should be understood that... Figures 1 to 4 This is a schematic flowchart illustrating a method for signal transmission according to an embodiment of this application. It shows the detailed communication steps or operations of the method, but these steps or operations are merely examples; other operations may also be performed in this embodiment. Figures 1 to 4 Variations of various operations within it.

[0064] also, Figures 1 to 4 Each step in the process can be followed separately according to... Figures 1 to 4 The different orders presented may be executed, and it is possible that they are not intended to be executed. Figures 1 to 4 All operations within.

[0065] Figure 1 This is a schematic flowchart of a method 100 for signal transmission according to an embodiment of this application, such as... Figure 1 As shown, the method 100 may include the following:

[0066] S110, the first device transmits at least one first signal on a first carrier via a first beam, the first beam comprising at least one beam;

[0067] S120, the first device receives at least one second signal transmitted by the second device on the first carrier.

[0068] Therefore, the first device can transmit the at least one first signal using the first beam on the first carrier, and at the same time receive at least one second signal from the second device via the first carrier. This directional interaction method is beneficial to improving the spatial multiplexing transmission capability of the cell.

[0069] Optionally, the first carrier can be a carrier on an unlicensed spectrum.

[0070] Optionally, in this embodiment, the first device is a terminal device or a network device.

[0071] Optionally, in the embodiments of this application, the first signal and the second signal can be reference signals. For example, the first signal can be one or more of PSS, SSS, CSI-RS, DMRS, PT-RS, and SRS. Alternatively, the first signal can be a newly introduced reference signal for interactive purposes.

[0072] Optionally, in the embodiments of this application, different beams may correspond to different first signals, or the first signals transmitted using different beams may have different forms. For example, different beams may be used to transmit different reference signal sequences, so that the second device can determine the beam used to transmit the first signal based on the received first signal.

[0073] Optionally, in some embodiments, S110 may specifically include:

[0074] The first device transmits the at least one first signal on the first carrier via the first beam using a first subcarrier spacing, wherein the first subcarrier spacing is specified by the communication system, or the first subcarrier spacing is pre-specified by the network device, or the first subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

[0075] Optionally, the first subcarrier spacing specified by the communication system can be considered fixed. Specifically, the communication system can specify one or more subcarrier spacings. For example, if the communication system specifies the first subcarrier spacing as 60kHz, then the first device uses a 60kHz subcarrier spacing to transmit the first signal, and the second device uses a 60kHz subcarrier spacing to receive the first signal. As another example, if the communication system specifies the first subcarrier spacing as either 60kHz or 30kHz, then the first device uses either a 60kHz or 30kHz subcarrier spacing to transmit the first signal, and the second device uses both 60kHz and 30kHz subcarrier spacings to perform blind detection on the first signal to determine its subcarrier spacing.

[0076] Optionally, the first subcarrier spacing pre-specified (or pre-configured) by the network device can be considered semi-static, and the network device can reconfigure the first subcarrier spacing through dynamic signaling or semi-static signaling.

[0077] Optionally, the first subcarrier spacing is determined based on the subcarrier spacing configured for data transmission in the network device. For example, the first subcarrier spacing can be K times the subcarrier spacing for data transmission, where K can be 1 or 2, etc.

[0078] Optionally, if the first device is a terminal device, the first subcarrier spacing may be determined based on the subcarrier spacing configured for uplink transmission in the network device configuration, or if the first device is a network device, the first subcarrier spacing may be determined based on the subcarrier spacing for downlink transmission.

[0079] Optionally, in some embodiments, the first signal is used to determine at least one of the following: beam indication information of at least one of the beams included in the first beam and resources used for transmission of the at least one second signal.

[0080] For example, the resources used for transmitting the at least one second signal may include at least one of the time-domain resources, frequency-domain resources, and code-domain resources used for transmitting the at least one second signal, or may include other resources for transmitting the at least one second signal. This application embodiment does not specifically limit this.

[0081] As an example and not a limitation, beam indication information for a beam may include: a signal index or beam identifier of a reference signal that satisfies a quasi-co-located (QCL) relationship with the beam.

[0082] It should be understood that, in the embodiments of this application, the beam used to receive a signal can be understood as the spatial domain reception filter used to receive a signal; the beam used to transmit a signal can be understood as the spatial domain transmission filter used to transmit a signal. For two signals transmitted using the same spatial domain transmission filter, these two signals can be considered to have QCL relative to the spatial reception parameters.

[0083] Optionally, if the first device is a network device and the second device is a terminal device, the at least one first signal can also be used for beam selection between the network device and the terminal device. For example, the at least one first signal can carry a beam identifier, the beam of which is one or more optimal beams selected by the network device for downlink transmission for the terminal device, or optimal or suboptimal beams selected by the network device for uplink transmission for the terminal device, or one or more beams used by the network device to transmit the first signal.

[0084] Optionally, in some embodiments, S120 includes:

[0085] The first device receives the at least one second signal transmitted by the second device using a second subcarrier interval on the first carrier, wherein the second subcarrier interval may be the same as the first subcarrier interval, i.e., the first device and the second device may use the same subcarrier interval for signal transmission, or the second subcarrier interval may be specified by the communication system, or the second subcarrier interval may be pre-specified by the network device, or the second subcarrier interval may be determined by the subcarrier interval configured by the network device for data transmission.

[0086] It should be understood that, similar to the first subcarrier spacing, the second subcarrier spacing specified by the communication system can optionally be considered fixed. Specifically, the communication system can specify one or more subcarrier spacings. For example, if the communication system specifies the second subcarrier spacing as 60kHz, then the second device uses a 60kHz subcarrier spacing to transmit the second signal, and the first device uses a 60kHz subcarrier spacing to receive the second signal. As another example, if the communication system specifies the second subcarrier spacing as either 60kHz or 30kHz, then the second device uses either a 60kHz or 30kHz subcarrier spacing to transmit the second signal, and the first device uses both 60kHz and 30kHz subcarrier spacings to perform blind detection on the second signal to determine its subcarrier spacing.

[0087] Optionally, the second subcarrier spacing pre-specified (or pre-configured) by the network device can be considered semi-static. The network device can reconfigure the second subcarrier spacing through dynamic signaling or semi-static signaling.

[0088] Optionally, the second subcarrier spacing is determined based on the subcarrier spacing configured for data transmission in the network device. For example, the second subcarrier spacing can be K times the subcarrier spacing for data transmission, where K can be 1 or 2, etc.

[0089] Optionally, if the second device is a terminal device, the second subcarrier spacing may be determined based on the subcarrier spacing configured for uplink transmission in the network device configuration, or if the second device is a network device, the second subcarrier spacing may be determined based on the subcarrier spacing for downlink transmission.

[0090] Optionally, in some embodiments, the second device may transmit the at least one second signal in an omnidirectional manner.

[0091] Alternatively, in other embodiments, S120 may specifically include:

[0092] The first device receives the at least one second signal transmitted by the second device via a second beam on the first carrier, wherein the second beam includes at least one beam, and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0093] That is, the second device may transmit the at least one second signal via a second beam. Optionally, the second beam may also include at least one beam, wherein the spatial domain coverage of the first beam through which the first device transmits the at least one first signal at least partially overlaps with the spatial domain coverage of the corresponding second beam.

[0094] Here, the spatial domain coverage area corresponding to the second beam at least partially overlapping with the spatial domain coverage area corresponding to the first beam may include the spatial domain coverage area corresponding to the second beam completely overlapping with the spatial domain coverage area corresponding to the first beam, or the spatial domain coverage area corresponding to the second beam being a subset of the spatial domain coverage area corresponding to the first beam, that is, the spatial domain coverage area corresponding to the first beam covering the spatial domain coverage area corresponding to the second beam, or the spatial domain coverage area corresponding to the first beam being a subset of the spatial domain coverage area corresponding to the second beam, that is, the spatial domain coverage area corresponding to the second beam covering the spatial domain coverage area corresponding to the first beam.

[0095] It should be understood that the spatial domain coverage of a beam can be determined by the angle (or direction) of the beam, the coverage angle of the beam, and the signal amplitude.

[0096] Optionally, in an embodiment of this application, the second signal is used to determine the beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the second device and the second optimal beam among at least one beam included in the first beam as measured by the second device.

[0097] Therefore, the second signal can be used for beam selection between the first device and the second device. The first device can determine the optimal or suboptimal beam selected by the second device in the first beam based on the received at least one second signal. Optionally, if the first device is a network device and the second device is a terminal device, the beam indication information of the third beam can be the optimal or suboptimal beam for downlink transmission measured by the terminal device, wherein the third beam is one or more beams in the first beam.

[0098] It should be understood that the suboptimal beam among the at least one beam determined by the second device may be the optimal beam for other devices. The second device's selection of the suboptimal beam for data transmission is beneficial to increasing the opportunity for multi-user multiplexing transmission and also to improving resource utilization.

[0099] Optionally, in the embodiments of this application, the beam indication information of the third beam may be obtained by the second device based on historical reference signals, or it may be obtained based on at least one first signal. The embodiments of this application do not limit this.

[0100] Optionally, the first device transmits the at least one first signal via the first beam on a first time domain resource on the first carrier, and the first device receives the at least one second signal transmitted by the second device on a second time domain resource on the first carrier, wherein the time length between the second time domain resource and the first time domain resource is defined by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

[0101] That is, the time-domain resource location for the first device to transmit and receive signals can have a fixed time interval. Thus, after the first device transmits the at least one first signal, it can receive the signal after the time interval, instead of continuously performing blind detection on the channel to receive the feedback signal from the second device after transmitting the at least one first signal. This can reduce the power consumption of the first device and improve the performance of the communication system.

[0102] Optionally, in some embodiments, the method 100 may further include:

[0103] The first device transmits a first physical channel to the second device on the first carrier.

[0104] Specifically, after receiving at least one second signal sent by the second device, the first device can determine that subsequent data transmission is possible. Furthermore, the first device can send a first physical channel to the second device on a first carrier. Optionally, if the first device is a network device and the second device is a terminal device, the first physical channel can be a downlink physical channel, such as PDCCH or PDSCH. Alternatively, if the first device is a terminal device and the second device is a network device, the first network channel can be an uplink physical channel, such as PUSCH or PUCCH.

[0105] Optionally, in some embodiments, the transmission of the first physical channel from the first device to the second device may be omnidirectional.

[0106] Alternatively, in other embodiments, the first device may also transmit the first physical channel to the second device via a fourth beam on the first carrier, wherein the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0107] Here, the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, which may include:

[0108] The spatial domain coverage area corresponding to the fourth beam completely overlaps with the spatial domain coverage area corresponding to the first beam, or the spatial domain coverage area corresponding to the fourth beam is a subset of the spatial domain coverage area corresponding to the first beam. That is, the range in which the first device transmits data can be less than or equal to the range in which it transmits the at least one first signal, or it can be considered that the range in which the first device transmits data is less than or equal to the range of channel sensing.

[0109] Optionally, in some embodiments, the fourth beam is one of the beams in the first beam, or the fourth beam is one of the beams in the third beam.

[0110] That is, the fourth beam can be one of the first beams used by the first device to transmit the at least one first signal, or it can be one of the third beams selected by the second device in the first beam. In other words, the fourth beam can be the optimal or suboptimal beam selected by the second device in the first beam.

[0111] Optionally, in some embodiments, the method 100 further includes:

[0112] The first device receives at least one second signal transmitted by the third device on the first carrier.

[0113] Optionally, the at least one first signal transmitted by the first device through the first beam may be received by multiple devices. If the channel is available, all of the multiple devices that receive the at least one first signal can reply to the first device with at least one second signal. The third device may be any of the multiple devices other than the second device.

[0114] It should be understood that the process by which the third device sends at least one second signal is similar to the process by which the second device sends at least one second signal, and for the sake of brevity, it will not be described in detail here.

[0115] Optionally, in some embodiments, the method 100 may further include:

[0116] The first device transmits a second physical channel to the third device on the first carrier.

[0117] That is, after the first device receives at least one second signal sent by the third device, the first device can determine that it is able to perform subsequent data transmission, and thus can send a second physical channel to the third device. For specific implementation, please refer to the relevant description in the foregoing embodiments, which will not be repeated here.

[0118] It should be understood that, in the embodiments of this application, the first beam used by the first device to transmit the at least one first signal may include at least one beam in a first beam set, and the second beam used by the second device to transmit the at least one second signal may include at least one beam in a second beam set. The first beam set is the beam set used by the first device to transmit signals, and the second beam set is the beam set used by the second device to transmit signals.

[0119] Optionally, the beams included in the first beam set are the same as those included in the second beam set.

[0120] Optionally, at least one beam in the first beam set and the second beam set are different. For example, the first beam set and the second beam set include different numbers of beams. The first beam set includes N beams, where N is a positive integer, and these N beams correspond to different directions. The second beam set includes M beams, where M is a positive integer, and these M beams also correspond to different directions. The N beams in the first beam set and the M beams in the second beam set correspond to the same direction and coverage angle. Assuming M = 2 * N, then the direction and coverage angle corresponding to one beam in the first beam set are the same as the direction and coverage angle corresponding to the combined direction and coverage angle of two beams in the second beam set.

[0121] Hereinafter, taking the first device as a network device (e.g., gNB) and the second device as a terminal device (UE) as an example, the method for signal transmission according to the embodiments of this application will be described.

[0122] Suppose that the first beam set includes beams A, B, and C, and the second beam set includes beams a, b, and c, wherein beam A corresponds to beam a, beam B corresponds to beam b, and beam C corresponds to beam c. In other words, the spatial domain coverage of beam A overlaps with the spatial domain coverage of beam a, the spatial domain coverage of beam B overlaps with the spatial domain coverage of beam b, and the spatial domain coverage of beam C overlaps with the spatial domain coverage of beam c. Furthermore, beams B and C... The spatial domain coverage of beams b and c is a subset of the spatial domain coverage of beam a (or, the spatial domain coverage of beam a at least covers the spatial domain coverage of beam b, and the spatial domain coverage of beam a at least covers the spatial domain coverage of beam c). Alternatively, the spatial domain coverage of beams b and c may or may not overlap; similarly, the spatial domain coverage of beams b and c may or may not overlap. This embodiment does not impose any particular limitation.

[0123] For the first device, at least one of beams A, B, and C can be used to transmit the at least one first signal. Hereinafter, the signal transmission process will be described using the example of the first device using beam A to transmit the at least one first signal (referred to as Example 1) and using beams B and C to transmit the at least one first signal (referred to as Example 2).

[0124] It should be understood that in this embodiment 1, after the second device receives at least one first signal transmitted by the first device using beam A, it can perform channel detection on at least one of beams a, b, and c to determine whether the channel is available. Figure 2 The six cases shown are examples; other cases are similar and will not be repeated here.

[0125] Case 1: After receiving the at least one first signal sent by the first device through beam A, the second device can perform channel detection in the direction corresponding to beam a of beam A. If the channel detection is successful, the second device can send the at least one second signal using at least one of beams a, b, and c.

[0126] Scenario 2: If the second device fails to detect the channel in the direction corresponding to beam a, the second device may not send the at least one second signal, that is, it may not use any one of beams a, b and c to send the at least one second signal. Correspondingly, the first device may cancel subsequent data transmission, that is, the first device may not use any one of beams A, B and C to send a signal to the second device.

[0127] Case 3: The second device can perform channel detection in the directions corresponding to beams b and c. If channel detection is successful on both beams b and c, the second device can use beams b and / or beam c to transmit at least one second signal.

[0128] Case 4: The second device can perform channel detection in the directions corresponding to beam b and beam c. If the channel detection is successful in the direction corresponding to beam b and fails in the direction corresponding to beam c, the second device can use beam b to send the at least one second signal, but does not use beam c to send the at least one second signal.

[0129] Case 5: The second device can perform channel detection in the directions corresponding to beam b and beam c. If the channel detection fails in the direction corresponding to beam b, but succeeds in the direction corresponding to beam c, the second device can use beam c to send the at least one second signal, but does not use beam b to send the at least one second signal.

[0130] Case 6: The second device can perform channel detection in the directions corresponding to beam b and beam c. If channel detection fails in both directions corresponding to beam b and channel c, the second device can send the at least one second signal without using beam b and beam c. Accordingly, the first device can stop transmitting subsequent data.

[0131] It should be understood that in this embodiment 2, after the second device receives at least one first signal transmitted by the first device using beams B and C, it can perform channel detection on at least one of beams a, b, and c to determine whether the channel is available. Figure 3 The six cases shown are examples; other cases are similar and will not be repeated here.

[0132] Case 1: The second device can perform channel detection in the direction corresponding to beam a. If the channel detection is successful, the second device can use at least one of beams a, b, and c to transmit the at least one second signal.

[0133] Scenario 2: The second device can perform channel detection in the direction corresponding to beam a. If the second device fails to detect the channel on beam a, the second device can choose not to send the at least one second signal, that is, not to use any one of beams a, b, and c to send the at least one second signal. Correspondingly, the first device can cancel subsequent data transmission, that is, the first device will not use any one of beams A, B, and C to send a signal to the second device.

[0134] Case 3: The second device can perform channel detection in the directions corresponding to beam b and beam c. If channel detection is successful in both directions corresponding to beam b and beam c, the second device can use beam b and / or beam c to transmit at least one second signal.

[0135] Case 4: The second device can perform channel detection in the directions corresponding to beam b and beam c. If the channel detection is successful in the direction corresponding to beam b and fails in the direction corresponding to beam c, the second device can use beam b to send the at least one second signal, but does not use beam c to send the at least one second signal.

[0136] Case 5: The second device can perform channel detection in the directions corresponding to beam b and beam c. If the channel detection fails in the direction corresponding to beam b, but succeeds in the direction corresponding to beam c, the second device can use beam c to send the at least one second signal, but does not use beam b to send the at least one second signal.

[0137] Case 6: The second device can perform channel detection in the directions corresponding to beam b and beam c. If channel detection fails in both directions corresponding to beam b and channel c, the second device can send the at least one second signal without using beam b and beam c. Accordingly, the first device can stop transmitting subsequent data.

[0138] Optionally, the first device carries beam indication information of beams B and C through the first signal of beams B and C. After receiving the first signal, the second device selects the beam with better performance from beams B and C, such as beam B, based on historical measurement results or based on the measurement results of the first signal, and sends the beam indication information of beam B to the first device through the second signal (for example, using beam b corresponding to beam B to send the second signal; or using beam b or beam c to send the second signal, wherein the second signal includes a reference signal corresponding to beam B). After receiving the second signal, the first device determines beam B based on the second signal and uses beam B to send the first physical channel to the second device.

[0139] The above combination Figures 1 to 3The method for signal transmission according to an embodiment of this application has been described from the perspective of a first device. Hereinafter, the method for signal transmission according to another embodiment of this application will be described from the perspective of a second device. It should be understood that the description on the second device side corresponds to the description on the first device side. Similar descriptions can be found above. To avoid repetition, they will not be repeated here.

[0140] Figure 4 This is a schematic flowchart of a method 400 for signal transmission according to another embodiment of this application, such as... Figure 4 As shown, the method 400 includes:

[0141] S410, the second device receives at least one first signal transmitted by the first device via a first beam on a first carrier, the first beam including at least one beam;

[0142] S420, the second device performs channel detection on the first carrier to determine whether to transmit at least one second signal.

[0143] Optionally, in some embodiments, the method 400 further includes:

[0144] If channel detection is successful on the first carrier, the second device transmits the at least one second signal on the first carrier.

[0145] Optionally, in some embodiments, the second device transmits the at least one second signal on the first carrier, including:

[0146] The second device transmits the at least one second signal using a second subcarrier interval on the first carrier.

[0147] The second subcarrier spacing is specified by the communication system, or is pre-specified by the network device, or is determined by the subcarrier spacing configured by the network device for data transmission.

[0148] Optionally, in some embodiments, the second device transmits the at least one second signal on the first carrier, including:

[0149] The second device transmits the at least one second signal on the first carrier via a second beam, wherein the second beam includes at least one beam, and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0150] Optionally, in some embodiments, the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, including:

[0151] The spatial domain coverage area corresponding to the second beam is a subset of the spatial domain coverage area corresponding to the first beam.

[0152] Optionally, in some embodiments, the second signal is used to determine beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the second device and the second optimal beam among at least one beam included in the first beam as measured by the second device.

[0153] Optionally, in some embodiments, the second device receives at least one first signal transmitted by the first device through a first beam on a first time-domain resource on the first carrier, and the second device performs channel detection on a second time-domain resource on the first carrier to determine whether to transmit at least one second signal, wherein the time length between the second time-domain resource and the first time-domain resource is defined by the communication system, or the time length between the second time-domain resource and the first time-domain resource is pre-specified by the network device.

[0154] Optionally, in some embodiments, the second device receives at least one first signal transmitted by the first device via a first beam on a first carrier, including:

[0155] The second device receives on the first carrier the at least one first signal transmitted by the first device through a first beam using a first subcarrier spacing, wherein the first subcarrier spacing is specified by the communication system, or the first subcarrier spacing is pre-specified by the network device, or the first subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

[0156] Optionally, in some embodiments, the second subcarrier spacing is the same as the first subcarrier spacing.

[0157] Optionally, in some embodiments, the first signal is used to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

[0158] The above text combined Figures 1 to 4 The method embodiments of this application are described in detail below, in conjunction with... Figures 5 to 8 The present application describes the device embodiments in detail. It should be understood that the device embodiments correspond to the method embodiments, and similar descriptions can be referred to the method embodiments.

[0159] Figure 5 A schematic block diagram of a device 500 for signal transmission according to an embodiment of this application is shown. Figure 5 As shown, the device 500 includes:

[0160] The communication module 510 is configured to transmit at least one first signal on a first carrier via a first beam, the first beam including at least one beam; and to receive at least one second signal transmitted by a second device on the first carrier.

[0161] Optionally, in some embodiments, the communication module 510 is specifically used for:

[0162] The at least one first signal is transmitted on the first carrier via the first beam using the first subcarrier spacing.

[0163] The first subcarrier spacing is specified by the communication system, or the first subcarrier spacing is pre-specified by the network device, or the first subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

[0164] Optionally, in some embodiments, the device 500 further includes:

[0165] The first processing module 520 is configured to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used by the at least one second signal transmission.

[0166] Optionally, in some embodiments, the communication module 510 is specifically used for:

[0167] On the first carrier, the at least one second signal transmitted by the second device using a second subcarrier interval is received.

[0168] The second subcarrier spacing is specified by the communication system, or is pre-specified by the network device, or is determined by the subcarrier spacing configured by the network device for data transmission.

[0169] Optionally, in some embodiments, the communication module 510 is further configured to:

[0170] The at least one second signal transmitted by the second device via a second beam is received on the first carrier, wherein the second beam includes at least one beam and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0171] Optionally, in some embodiments, the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, including:

[0172] The spatial domain coverage area corresponding to the second beam is a subset of the spatial domain coverage area corresponding to the first beam.

[0173] Optionally, in some embodiments, the device 500 further includes:

[0174] The second processing module 530 is configured to determine beam indication information of the third beam based on the at least one second signal, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the second device and the suboptimal beam among at least one beam included in the first beam as measured by the second device.

[0175] Optionally, in some embodiments, the device transmits the at least one first signal via the first beam on a first time domain resource on the first carrier, and the device receives the at least one second signal transmitted by the second device on a second time domain resource on the first carrier, wherein the time length between the second time domain resource and the first time domain resource is defined by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

[0176] Optionally, in some embodiments, the communication module 510 is further configured to:

[0177] The first physical channel is transmitted to the second device on the first carrier.

[0178] Optionally, in some embodiments, the device transmits the first physical channel to the second device via a fourth beam on the first carrier, wherein the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0179] Optionally, in some embodiments, the fourth beam is one of the beams in the first beam.

[0180] Optionally, in some embodiments, the communication module 510 is further configured to:

[0181] Receive at least one second signal transmitted by a third device on the first carrier.

[0182] Optionally, in some embodiments, the communication module 510 is further configured to:

[0183] The second physical channel is transmitted to the third device on the first carrier.

[0184] It should be understood that the device 500 for signal transmission according to the embodiments of this application may correspond to the first device in the method embodiments of this application, and the above and other operations and / or functions of each unit in the device 500 are respectively for implementing Figure 1 The corresponding process of the first device in method 100 shown will not be described in detail here for the sake of brevity.

[0185] Figure 6This is a schematic block diagram of a device for signal transmission according to an embodiment of this application. Figure 6 The equipment 600 includes:

[0186] The communication module 610 is configured to receive at least one first signal transmitted by the first device via a first beam on a first carrier, the first beam comprising at least one beam.

[0187] The processing module 620 is used to perform channel detection on the first carrier to determine whether to transmit at least one second signal.

[0188] Optionally, in some embodiments, the communication module 610 is further configured to:

[0189] If channel detection is successful on the first carrier, at least one second signal is transmitted on the first carrier.

[0190] Optionally, in some embodiments, the communication module 610 is further configured to:

[0191] The at least one second signal is transmitted using a second subcarrier interval on the first carrier.

[0192] The second subcarrier spacing is specified by the communication system, or is pre-specified by the network device, or is determined by the subcarrier spacing configured by the network device for data transmission.

[0193] Optionally, in some embodiments, the communication module 610 is further configured to:

[0194] The at least one second signal is transmitted on the first carrier via a second beam, wherein the second beam includes at least one beam and the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

[0195] Optionally, in some embodiments, the spatial domain coverage area corresponding to the second beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam, including:

[0196] The spatial domain coverage area corresponding to the second beam is a subset of the spatial domain coverage area corresponding to the first beam.

[0197] Optionally, in some embodiments, the processing module 620 is further configured to: determine beam indication information of a third beam based on the second signal, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the device and the suboptimal beam among at least one beam included in the first beam as measured by the device.

[0198] Optionally, in some embodiments, the device receives at least one first signal transmitted by the first device through a first beam on a first time domain resource on the first carrier, and the device performs channel detection on a second time domain resource on the first carrier to determine whether to transmit at least one second signal, wherein the time length between the second time domain resource and the first time domain resource is specified by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

[0199] Optionally, in some embodiments, the communication module 610 is further configured to:

[0200] The first signal transmitted by the first device through a first beam using a first subcarrier spacing is received on the first carrier, wherein the first subcarrier spacing is specified by the communication system, or the first subcarrier spacing is pre-specified by the network device, or the first subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

[0201] Optionally, in some embodiments, the processing module 620 is further configured to: determine at least one of the following based on the at least one first signal: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

[0202] Specifically, the device 600 may correspond to (for example, may be configured in or be itself) the first device described in the method 400 above, and each module or unit in the device 600 is used to perform each action or processing procedure performed by the first device in the method 400 above. Here, to avoid redundancy, its detailed description is omitted.

[0203] like Figure 7 As shown in the figure, this application embodiment also provides a device 700 for signal transmission, the device 700 can be... Figure 5 Device 500, which is capable of performing and Figure 1 The content of the first device corresponding to method 100. The device 700 includes: an input interface 710, an output interface 720, a processor 730, and a memory 740. The input interface 710, output interface 720, processor 730, and memory 740 can be connected via a bus system. The memory 740 is used to store programs, instructions, or code. The processor 730 is used to execute the programs, instructions, or code in the memory 740 to control the input interface 710 to receive signals, control the output interface 720 to send signals, and complete the operations described in the aforementioned method embodiments.

[0204] It should be understood that in the embodiments of this application, the processor 730 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0205] The memory 740 may include read-only memory and random access memory, and provides instructions and data to the processor 730. A portion of the memory 740 may also include non-volatile random access memory. For example, the memory 740 may also store device type information.

[0206] In implementation, each part of the above method can be accomplished through the integrated logic circuits in the processor 730 or through software instructions. The content of the method disclosed in the embodiments of this application can be directly manifested as execution by the hardware processor, or as execution by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 740, and the processor 730 reads the information in memory 740 and, in conjunction with its hardware, completes the content of the above method. To avoid repetition, further details are omitted here.

[0207] In one specific implementation, Figure 5 The communication module 510 included in the device 500 can be used Figure 7 The input interface 710 and the output interface 720 are implemented as described above. Figure 5 The device 500 includes a first processing module 520 and a second processing module 530, which can be used Figure 7 The processor 730 is implemented.

[0208] like Figure 8 As shown in the illustration, this application embodiment also provides a device 800 for signal transmission, the device 800 being... Figure 6 Device 600, which is capable of performing and Figure 4The second device corresponding to method 400. The device 800 includes: an input interface 810, an output interface 820, a processor 830, and a memory 840. The input interface 810, output interface 820, processor 830, and memory 840 can be connected via a bus system. The memory 840 is used to store programs, instructions, or code. The processor 830 is used to execute the programs, instructions, or code in the memory 840 to control the input interface 810 to receive signals, control the output interface 820 to send signals, and complete the operations described in the aforementioned method embodiments.

[0209] It should be understood that, in the embodiments of this application, the processor 830 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, or it may be any conventional processor.

[0210] The memory 840 may include read-only memory and random access memory, and provides instructions and data to the processor 830. A portion of the memory 840 may also include non-volatile random access memory. For example, the memory 840 may also store device type information.

[0211] In implementation, each part of the above method can be accomplished through the integrated logic circuits in the hardware of the processor 830 or through software instructions. The content of the method disclosed in the embodiments of this application can be directly manifested as execution by the hardware processor, or as execution by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 840, and the processor 830 reads the information in memory 840 and, in conjunction with its hardware, completes the content of the above method. To avoid repetition, a detailed description is not provided here.

[0212] In one specific implementation, Figure 6 The communication module 610 included in the device 600 can be used Figure 8 The input interface 810 and the output interface 820 are implemented as described above. Figure 6 The processing module 620 included in the device 600 can be used Figure 8 The processor 830 is implemented.

[0213] This application also proposes a computer-readable storage medium that stores one or more programs, the programs including instructions that, when executed by a portable electronic device including multiple applications, enable the portable electronic device to perform... Figures 1 to 4 The method of the illustrated embodiment.

[0214] This application also provides a computer program comprising instructions that, when executed by a computer, enable the computer to perform... Figures 1 to 4 The corresponding flow of the method in the illustrated embodiment.

[0215] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software 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.

[0216] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0217] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0218] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0219] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0220] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0221] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for signal transmission, characterized in that, The method includes: The network device transmits at least one first signal via a first beam on a first carrier, the first beam comprising at least one beam; wherein the first carrier is a carrier on an unlicensed spectrum; The network device receives at least one second signal transmitted by a terminal device on the first carrier; wherein when channel detection is performed on the first carrier and the channel detection is successful, the terminal device transmits the at least one second signal on the first carrier via a second beam; wherein the second beam is used for channel detection on the first carrier, and the spatial domain coverage corresponding to the second beam overlaps with the spatial domain coverage corresponding to the first beam; wherein the network device receiving the at least one second signal transmitted by the terminal device on the first carrier includes: The network device receives the at least one second signal transmitted by the terminal device via the second beam on the first carrier.

2. The method according to claim 1, characterized in that, The network device transmits at least one first signal via a first beam on a first carrier, including: The network device transmits the at least one first signal on the first carrier via the first beam using a first subcarrier spacing. Wherein, the first subcarrier interval is specified by the communication system, or the first subcarrier interval is pre-specified by the network device, or the first subcarrier interval is determined by the subcarrier interval configured by the network device for data transmission.

3. The method according to claim 1, characterized in that, The at least one first signal is used to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

4. The method according to any one of claims 1 to 3, characterized in that, The network device receives at least one second signal sent by the terminal device on the first carrier, including: The network device receives the at least one second signal transmitted by the terminal device using a second subcarrier interval on the first carrier. The second subcarrier spacing is specified by the communication system, or the second subcarrier spacing is pre-specified by the network device, or the second subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

5. The method according to any one of claims 1 to 3, characterized in that, The at least one second signal is used to determine the beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the terminal device and the suboptimal beam among at least one beam included in the first beam as measured by the terminal device.

6. The method according to any one of claims 1 to 3, characterized in that, The network device transmits the at least one first signal via the first beam on a first time domain resource on the first carrier, and the network device receives the at least one second signal transmitted by the terminal device on a second time domain resource on the first carrier, wherein the time length between the second time domain resource and the first time domain resource is defined by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

7. The method according to any one of claims 1 to 3, characterized in that, The method further includes: The network device transmits a first physical channel to the terminal device on the first carrier.

8. The method according to claim 7, characterized in that, The network device transmits the first physical channel to the terminal device via a fourth beam on the first carrier, wherein the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

9. The method according to claim 8, characterized in that, The fourth beam is one of the beams in the first beam.

10. A method for signal transmission, characterized in that, The method includes: The terminal device receives at least one first signal transmitted by the network device through a first beam on a first carrier, the first beam including at least one beam; wherein, the first carrier is a carrier on an unlicensed spectrum; The terminal device performs channel detection on the first carrier to determine whether to transmit at least one second signal through the second beam; wherein the spatial domain coverage corresponding to the second beam overlaps with the spatial domain coverage corresponding to the first beam. When channel detection on the first carrier is successful, the terminal device sends at least one second signal on the first carrier. The transmission of the at least one second signal by the terminal device on the first carrier includes: The terminal device transmits the at least one second signal via a second beam on a first carrier; wherein the second beam is used for channel detection of the first carrier.

11. The method according to claim 10, characterized in that, The terminal device transmits the at least one second signal on the first carrier, including: The terminal device transmits the at least one second signal on the first carrier using a second subcarrier interval. The second subcarrier spacing is specified by the communication system, or the second subcarrier spacing is pre-specified by the network device, or the second subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

12. The method according to claim 10, characterized in that, The at least one second signal is used to determine the beam indication information of the third beam, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the terminal device and the suboptimal beam among at least one beam included in the first beam as measured by the terminal device.

13. The method according to any one of claims 10 to 12, characterized in that, The terminal device receives at least one first signal transmitted by the network device through a first beam on a first time domain resource on the first carrier. The terminal device performs channel detection on a second time domain resource on the first carrier to determine whether to transmit at least one second signal. The time length between the second time domain resource and the first time domain resource is specified by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

14. The method according to any one of claims 10 to 12, characterized in that, The terminal device receives at least one first signal transmitted by the network device through a first beam on a first carrier, including: The terminal device receives, on the first carrier, at least one first signal transmitted by the network device using a first subcarrier interval through a first beam, wherein the first subcarrier interval is specified by the communication system, or the first subcarrier interval is pre-specified by the network device, or the first subcarrier interval is determined by the subcarrier interval configured by the network device for data transmission.

15. The method according to any one of claims 10 to 12, characterized in that, The at least one first signal is used to determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

16. A device for signal transmission, characterized in that, The device includes, A communication module is configured to transmit at least one first signal on a first carrier via a first beam, the first beam comprising at least one beam; wherein the first carrier is a carrier on an unlicensed spectrum; and to receive at least one second signal transmitted by a terminal device on the first carrier; wherein when channel detection is performed on the first carrier and the channel detection is successful, the terminal device transmits the at least one second signal on the first carrier via a second beam; wherein the second beam is used for channel detection on the first carrier, and the spatial domain coverage corresponding to the second beam overlaps with the spatial domain coverage corresponding to the first beam; wherein the communication module is further specifically configured to: Receive the at least one second signal transmitted by the terminal device via the second beam on the first carrier.

17. The device according to claim 16, characterized in that, The communication module is specifically used for: The at least one first signal is transmitted on the first carrier via the first beam using the first subcarrier spacing. Wherein, the first subcarrier interval is specified by the communication system, or the first subcarrier interval is pre-specified by the device, or the first subcarrier interval is determined by the subcarrier interval configured by the device for data transmission.

18. The device according to claim 16, characterized in that, The device also includes: A first processing module is configured to determine, based on the at least one first signal, at least one of the following: beam indication information of at least one beam included in the first beam and resources used for the transmission of the at least one second signal.

19. The device according to any one of claims 16 to 18, characterized in that, The communication module is specifically used for: Receive the at least one second signal transmitted by the terminal device using a second subcarrier interval on the first carrier. The second subcarrier interval is specified by the communication system, or the second subcarrier interval is pre-specified by the device, or the second subcarrier interval is determined by the subcarrier interval configured by the device for data transmission.

20. The device according to any one of claims 16 to 18, characterized in that, The device also includes: The second processing module is configured to determine beam indication information of the third beam based on the at least one second signal, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the terminal device and the suboptimal beam among at least one beam included in the first beam as measured by the terminal device.

21. The device according to any one of claims 16 to 18, characterized in that, The device transmits the at least one first signal via the first beam on a first time domain resource on the first carrier, and the device receives the at least one second signal transmitted by the terminal device on a second time domain resource on the first carrier, wherein the time length between the second time domain resource and the first time domain resource is defined by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the device.

22. The device according to any one of claims 16 to 18, characterized in that, The communication module is also used for: The first physical channel is transmitted to the terminal device on the first carrier.

23. The device according to claim 22, characterized in that, The device transmits the first physical channel to the terminal device via a fourth beam on the first carrier, wherein the spatial domain coverage area corresponding to the fourth beam at least partially overlaps with the spatial domain coverage area corresponding to the first beam.

24. The device according to claim 23, characterized in that, The fourth beam is one of the beams in the first beam.

25. A device for signal transmission, characterized in that, The device includes: A communication module is configured to receive at least one first signal transmitted by a network device via a first beam on a first carrier, the first beam comprising at least one beam; wherein the first carrier is a carrier on an unlicensed spectrum; The processing module is used to perform channel detection on the first carrier to determine whether to transmit at least one second signal; wherein the spatial domain coverage corresponding to the second beam overlaps with the spatial domain coverage corresponding to the first beam. When channel detection on the first carrier is successful, the device sends at least one second signal on the first carrier. The transmission of the at least one second signal by the device on the first carrier includes: The device transmits the at least one second signal via a second beam on a first carrier; wherein the second beam is used for channel detection of the first carrier.

26. The device according to claim 25, characterized in that, The communication module is also used for: The at least one second signal is transmitted using a second subcarrier interval on the first carrier. The second subcarrier spacing is specified by the communication system, or the second subcarrier spacing is pre-specified by the network device, or the second subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

27. The device according to claim 26, characterized in that, The processing module is also used for: The beam indication information of the third beam is determined based on the at least one second signal, wherein the third beam includes at least one of the following: the optimal beam among at least one beam included in the first beam as measured by the device and the suboptimal beam among at least one beam included in the first beam as measured by the device.

28. The device according to any one of claims 25 to 27, characterized in that, The device receives at least one first signal transmitted by the network device through a first beam on a first time domain resource on the first carrier. The device performs channel detection on a second time domain resource on the first carrier to determine whether to transmit at least one second signal. The time length between the second time domain resource and the first time domain resource is specified by the communication system, or the time length between the second time domain resource and the first time domain resource is pre-specified by the network device.

29. The device according to any one of claims 25 to 27, characterized in that, The communication module is also used for: Receive on the first carrier the at least one first signal transmitted by the network device through a first beam using a first subcarrier spacing, wherein the first subcarrier spacing is specified by the communication system, or the first subcarrier spacing is pre-specified by the network device, or the first subcarrier spacing is determined by the subcarrier spacing configured by the network device for data transmission.

30. The device according to any one of claims 25 to 27, characterized in that, The processing module is also used for: Based on the at least one first signal, determine at least one of the following: beam indication information of at least one beam included in the first beam and resources used for transmission of the at least one second signal.

31. A device for signal transmission, characterized in that, The device includes a memory and a processor, wherein the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory for performing the method as described in any one of claims 1-9.

32. A device for signal transmission, characterized in that, The device includes a memory and a processor, wherein the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory for performing the method as described in any one of claims 10-15.

33. A computer storage medium, characterized in that, The computer storage medium is used to store computer software instructions for executing the method as described in any one of claims 1-9.

34. A computer storage medium, characterized in that, The computer storage medium is used to store computer software instructions for executing the method as described in any one of claims 10-15.

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