RU2840410C2 - Method and device for detection of unlicensed uplink channel detection beam and data medium - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: receiving information on configuration of first beam from network device, wherein the first beam configuration information is configured to indicate a transmission beam for sending an unlicensed uplink channel; and determining, based on the configuration information of the first beam, a detection beam to perform listening-before-talk (LBT) detection in an unlicensed uplink channel.

EFFECT: enabling detection of a detection beam for an unlicensed uplink channel.

16 cl, 10 dwg

Description

AREA OF TECHNOLOGY

[0001] The present invention relates to the field of wireless communication technologies, in particular to methods for determining a detection beam for an unlicensed uplink channel, corresponding devices and readable data carriers.

LEVEL OF TECHNOLOGY

[0002] In the unlicensed spectrum, before occupying a channel to send data, the transmitter usually needs to monitor the channel, i.e. perform a clear channel assessment (CCA). When the transmitter determines that the channel is clear, after performing the CCA, the transmitter can occupy the channel to send data, otherwise the transmitter cannot occupy the channel. This channel is usually called the unlicensed uplink channel, and the process described above is usually called the "listen before talk" (LBT) mechanism for channel access in the unlicensed spectrum.

[0003] Omnidirectional LBT or directional LBT can be performed in an unlicensed uplink channel. Omnidirectional LBT is designed to perform LBT using an omnidirectional beam, and directional LBT is designed to perform LBT using a specific directional beam. How to determine the appropriate detection beam (i.e., the beam used to perform LBT) in directional LBT is a problem that needs to be solved.

ESSENCE OF THE INVENTION

[0004] In view of this, the invention provides methods for determining a detection beam for an unlicensed uplink channel, corresponding devices and readable data carriers.

[0005] According to a first aspect of embodiments of the invention, a method for determining a detection beam for an unlicensed uplink channel performed by a user equipment (UE) is proposed. The method includes:

[0006] receiving first beam configuration information from a network device, wherein the first beam configuration information is configured to indicate a transmission beam for sending an unlicensed uplink channel; and

[0007] determining, based on the configuration information of the first beam, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel.

[0008] In embodiments of the present invention, a UE receives first beam configuration information from a network device to determine a transmission beam for sending an unlicensed uplink channel and determines, based on the transmission beam, a detection beam for performing LBT detection in the unlicensed uplink channel, so that the UE can determine a correct detection beam without the need for the network device to indicate corresponding detection beam information, thereby saving transmission resources.

[0009] In some possible implementations, the method further includes:

[0010] receiving high-level signaling from a network device, wherein the high-level signaling includes LBT configuration information, and the LBT configuration information is configured to indicate that the LBT mode is a directional LBT.

[0011] In some possible implementations, determining, based on the first beam configuration information, a detection beam for performing LBT detection in an unlicensed uplink channel includes:

[0012] determining, based on a transmission beam indicated by the first beam configuration information and a condition negotiated in a protocol, a detection beam for performing LBT detection in an unlicensed uplink channel, wherein the condition negotiated in the protocol includes at least one of a first selection condition or a second selection condition.

[0013] In some possible implementations, determining, based on the configuration information of the first beam, a detection beam for performing LBT detection in an unlicensed uplink channel includes:

[0014] determining one or more detection beams based on a transmit beam specified by the first beam configuration information and a first selection condition agreed upon in the protocol; and

[0015] determining, based on a second selection condition agreed upon in the protocol, one of the one or more detection beams as a detection beam for performing LBT detection in the unlicensed uplink channel.

[0016] In some possible implementations, the first selection condition at least includes:

[0017] the detection beam is a transmission beam;

[0018] the coverage direction of the detection beam and the coverage direction of the transmission beam satisfy a predetermined relationship;

[0019] or,

[0020] the detection beam is connected to the transmission beam.

[0021] In some possible implementations, the second selection condition at least includes:

[0022] the beam width at a given degree of attenuation is maximum;

[0023] or,

[0024] The spatial relation information index is minimal.

[0025] In some possible implementations, the detection beam for performing LBT detection in an unlicensed uplink channel is an omnidirectional beam.

[0026] According to a second aspect of embodiments of the invention, a method for determining a detection beam for an unlicensed uplink channel performed by a user equipment (UE) is provided. The method includes:

[0027] receiving second beam configuration information from a network device, wherein the second beam configuration information is configured to indicate a detection beam for performing listen-before-talk (LBT) detection in an unlicensed uplink channel; and

[0028] determining, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[0029] In embodiments of the invention, the UE receives configuration information of a second beam from a network device and determines, based on the configuration information of the second beam, a detection beam for performing LBT detection in an unlicensed uplink channel, so that the UE can accurately determine the detection beam based on an indication from the network device.

[0030] In some possible implementations, receiving second beam configuration information from a network device includes:

[0031] receiving high-level signaling from a network device, wherein the high-level signaling includes configuration information of the second beam.

[0032] In some possible implementations, the second beam configuration information includes a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams.

[0033] The method further includes:

[0034] receiving Medium Access Control Element (MAC CE) signaling from a network device, wherein the MAC CE signaling is configured to activate one of a plurality of uplink beams; and

[0035] determining an activated beam in a plurality of instances of spatial relationship information as a detection beam for performing LBT detection in an unlicensed uplink channel.

[0036] In some possible implementations, receiving second beam configuration information from a network device includes:

[0037] receiving radio resource control (RRC) signaling from a network device, wherein the RRC signaling includes second beam configuration information;

[0038] wherein the configuration information of the second beam is configured to indicate one Sounding Reference Signal (SRS) resource for indicating a detection beam for performing LBT in an unlicensed uplink channel.

[0039] In some possible implementations, the unlicensed uplink channel is a Physical Uplink Control Channel (PUCCH) or a Configured Grant Physical Uplink Shared channel (CG-PUSCH).

[0040] In some possible implementations, receiving configuration information of a second beam from a network device includes: receiving downlink control information (DCI) scheduling from a network device, wherein the scheduling DCI includes configuration information of the second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT in an unlicensed uplink channel.

[0041] In some possible implementations, the unlicensed uplink channel is a physical uplink shared channel (PUSCH) or CG-PUSCH.

[0042] In some possible implementations, the method further includes: in response to not receiving the second beam configuration information from the network device, determining a default detection beam for performing LBT in the unlicensed uplink channel.

[0043] In some possible implementations, the default detection beam is a transmit beam for sending an unlicensed uplink channel or an omnidirectional beam.

[0044] According to a third aspect of embodiments of the invention, a method for determining a detection beam for an unlicensed uplink channel performed by a network device is provided. The method includes:

[0045] sending configuration information of a first beam to a user equipment (UE), wherein the configuration information of the first beam is configured to indicate a transmit beam for sending an unlicensed uplink channel to enable the UE to determine, based on the configuration of the first beam, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel.

[0046] In embodiments of the present invention, the network device sends first beam configuration information to the UE to enable the UE to determine, based on the first beam configuration information, a transmission beam for sending an unlicensed uplink channel and to determine, based on the transmission beam, a detection beam for performing LBT detection in the unlicensed uplink channel. Therefore, the UE can determine a correct detection beam without the need for the network device to indicate corresponding detection beam information, thereby saving transmission resources.

[0047] In some possible implementations, the method further includes:

[0048] sending a high-layer signaling to the UE, wherein the high-layer signaling includes LBT configuration information, and the LBT configuration information indicates that the LBT mode is directional LBT.

[0049] According to a fourth aspect of the embodiments of the invention, a method for determining a detection beam for an unlicensed uplink channel performed by a network device is provided. The method includes:

[0050] sending configuration information of a second beam to a user equipment (UE), wherein the configuration information of the second beam is configured to indicate a detection beam for performing listen-before-talk (LBT) detection in an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[0051] In embodiments of the present invention, the network device sends configuration information of the second beam to the UE to enable the UE to determine a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE can accurately determine the detection beam based on an indication from the network device.

[0052] In some possible implementations, sending the second beam configuration information to the UE includes:

[0053] sending high-level signaling to the UE, wherein the high-level signaling includes configuration information of the second beam.

[0054] In some possible implementations, the second beam configuration information includes a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams.

[0055] The method further includes:

[0056] sending medium access control element (MAC CE) signaling to the UE, wherein the MAC CE signaling is configured to activate one of the plurality of uplink beams to enable the UE to determine the activated beam in the plurality of spatial relationship information instances as a detection beam for performing LBT detection in the unlicensed uplink channel.

[0057] In some possible implementations, sending the second beam configuration information to the UE includes:

[0058] sending radio resource control (RRC) signaling to the UE, wherein the RRC signaling includes second beam configuration information, and

[0059] the second beam configuration information is configured to indicate one sounding reference signal (SRS) resource for indicating a detection beam for performing LBT in an unlicensed uplink channel.

[0060] In some possible implementations, sending the second beam configuration information to the UE includes:

[0061] sending downlink control information (DCI) for scheduling to the UE, wherein the scheduling DCI includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT in an unlicensed uplink channel.

[0062] According to a fifth aspect of the embodiments of the present invention, a communication device is provided. The communication device is configured to perform the steps performed by the UE in the first aspect described above, or in any possible design of the first aspect. The UE may implement each of the functions in the above-described methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0063] When the communication device of the fifth aspect is implemented by a software module, the communication device may include a transceiver module and a processing module connected to each other. The transceiver module is configured to support communication of the communication device. The processing module may be used by the communication device to perform processing operations such as generating information/messages to be sent or processing received signals to obtain information/messages.

[0064] When performing the steps of the first aspect, the transceiver module is configured to receive configuration information of a first beam from a network device, wherein the configuration information of the first beam is configured to indicate a transmission beam for sending an unlicensed uplink channel. The processing module is configured to determine, based on the configuration information of the first beam, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel.

[0065] According to a sixth aspect of the embodiments of the present invention, a communication device is provided. The communication device is configured to perform the steps performed by the UE in the second aspect described above or in any possible design of the second aspect. The UE may implement each of the functions in the above-mentioned methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0066] When the communication device of the sixth aspect is implemented by a software module, the communication device may include a transceiver module and a processing module connected to each other. The transceiver module is configured to support communication of the communication device. The processing module may be used by the communication device to perform processing operations such as generating information/messages to be sent or processing received signals to obtain information/messages.

[0067] When performing the steps of the second aspect, the transceiver module is configured to receive configuration information of a second beam from a network device, wherein the configuration information of the second beam is configured to indicate a detection beam for performing listen-before-talk (LBT) detection in an unlicensed uplink channel. The processing module is configured to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[0068] According to a seventh aspect of the embodiments of the present invention, a communication device is provided. The communication device is configured to perform the steps performed by the network device in the third aspect described above, or in any possible design of the third aspect. The network device can implement each of the functions in the above-described methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0069] When the communication device according to the seventh aspect is implemented by a software module, the communication device may include a transceiver module and a processing module connected to each other. The transceiver module is configured to support communication of the communication device. The processing module may be used by the communication device to perform processing operations such as generating information/messages to be sent or processing received signals to obtain information/messages.

[0070] When performing the steps of the third aspect, the transceiver module is configured to send configuration information of a first beam to a UE, wherein the configuration information of the first beam is configured to indicate a transmission beam for sending an unlicensed uplink channel to enable the UE to determine, based on the configuration information of the first beam, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel.

[0071] According to an eighth aspect of the embodiments of the present invention, a communication device is provided. The communication device is configured to perform the steps performed by the network device in the fourth aspect described above or in any possible design of the fourth aspect. The network device can implement each of the functions in the above-described methods in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module.

[0072] When the communication device of the eighth aspect is implemented by a software module, the communication device may include a transceiver module and a processing module connected to each other. The transceiver module is configured to support communication of the communication device. The processing module may be used by the communication device to perform processing operations such as generating information/messages to be sent or processing received signals to obtain information/messages.

[0073] When performing the steps of the fourth aspect, the transceiver module is configured to send configuration information of a second beam to the UE, wherein the configuration information of the second beam is configured to indicate a detection beam for performing listen-before-talk (LBT) detection in an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[0074] According to a ninth aspect of the embodiments of the present invention, a communication system is provided. The communication system may include a communication device according to the fifth aspect and a communication device according to the seventh aspect. The communication device according to the fifth aspect may consist of a software module and/or a hardware component. The communication device according to the seventh aspect may consist of a software module and/or a hardware component.

[0075] According to a tenth aspect of the embodiments of the present invention, a communication system is provided. The communication system may include a communication device according to a sixth aspect and a communication device according to an eighth aspect. The communication device according to the sixth aspect may consist of a software module and/or a hardware component. The communication device according to the eighth aspect may consist of a software module and/or a hardware component.

[0076] According to an eleventh aspect of the embodiments of the present invention, a communication device is proposed. The communication device includes a processor and a memory. The memory is intended for storing a computer program. The processor is configured to execute the computer program for performing the methods of the first aspect or any possible design of the first aspect.

[0077] According to a twelfth aspect of the embodiments of the present invention, a communication device is proposed. The communication device includes a processor and a memory. The memory is intended for storing a computer program. The processor is configured to execute the computer program for performing the methods of the second aspect or any possible design of the second aspect.

[0078] According to a thirteenth aspect of the embodiments of the present invention, a communication device is proposed. The communication device includes a processor and a memory. The memory is intended for storing a computer program. The processor is configured to execute the computer program for performing the methods of the third aspect or any possible design of the third aspect.

[0079] According to a fourteenth aspect of the embodiments of the present invention, a communication device is provided. The communication device includes a processor and a memory. The memory is for storing a computer program. The processor is configured to execute the computer program for performing the methods of the fourth aspect or any possible design of the fourth aspect.

[0080] According to a fifteenth aspect of the embodiments of the present invention, a computer-readable storage medium is provided having instructions (computer programs/programs) stored thereon. When the instructions (computer programs/programs) are called up and executed by a computer, the computer has to implement the methods of the first aspect or any possible design of the first aspect.

[0081] According to a sixteenth aspect of the embodiments of the present invention, a computer-readable storage medium is provided having instructions (computer programs/programs) stored thereon. When the instructions (computer programs/programs) are called up and executed by a computer, the computer is required to implement the methods of the second aspect or any possible design of the second aspect.

[0082] According to a seventeenth aspect of the embodiments of the present invention, a computer-readable storage medium is provided having instructions (computer programs/programs) stored thereon. When the instructions (computer programs/programs) are called up and executed by a computer, the computer has to implement the methods of the third aspect or any possible design of the third aspect.

[0083] According to an eighteenth aspect of the embodiments of the present invention, a computer-readable storage medium having instructions (computer programs/programs) stored thereon is provided. When the instructions (computer programs/programs) are called up and executed by a computer, the computer is required to implement the methods of the fourth aspect or any possible design of the fourth aspect.

[0084] As for the beneficial effects in the above-mentioned aspects from the second to the eighteenth and their possible constructions, reference may be made to the description of the beneficial effects of the methods in the first aspect and any possible construction of the first aspect.

[0085] It is understood that the foregoing general description and the following detailed description are illustrative and explanatory only and are not restrictive of the invention.

BRIEF DESCRIPTION OF DRAWINGS

[0086] The accompanying drawings illustrated herein are used to provide a further understanding of the embodiments of the invention and form part of the application, and the schematic embodiments of the invention and their illustrations are used to explain the embodiments of the invention and do not constitute an unduly limiting feature of the embodiments of the invention.

[0087] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments according to the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0088] Fig. 1 is a schematic diagram illustrating a communication system according to an embodiment.

[0089] Fig. 2 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0090] Fig. 3 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0091] Fig. 4 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0092] Fig. 5 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0093] Fig. 6 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0094] Fig. 7 is a schematic diagram illustrating an apparatus for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0095] Fig. 8 is a schematic diagram illustrating an apparatus for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0096] Fig. 9 is a schematic diagram illustrating an apparatus for determining a detection beam for an unlicensed uplink channel according to an embodiment.

[0097] Fig. 10 is a schematic diagram illustrating an apparatus for determining a detection beam for an unlicensed uplink channel according to an embodiment.

DETAILED DESCRIPTION

[0098] Embodiments of the invention will be further described with reference to the accompanying drawings and specific implementations.

[0099] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, wherein like numerals in different drawings designate the same or similar elements unless otherwise indicated. The embodiments set forth in the following description of embodiments do not represent all embodiments consistent with the disclosure. Instead, they are merely examples of devices and methods consistent with aspects related to the disclosure, as defined in the appended claims.

[00100] Fig. 1 is a schematic diagram illustrating a communication system according to an embodiment. A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be applied to a wireless communication system 100. The wireless communication system 100 may include a user equipment (UE) 101 and a network device 102. The UE 101 is configured to support carrier aggregation. The UE 101 may be connected to a plurality of component carriers of the network device 102, including a primary component carrier and one or more secondary component carriers.

[00101] It is understood that the wireless communication system 100 described above can be applied to low-frequency scenarios and high-frequency scenarios. The application scenarios of the wireless communication system 100 include, but are not limited to, a long term evolution (LTE) system, a frequency division duplex (FDD) LTE system, a time division duplex (TDD) LTE system, a worldwide interoperability for micro wave access (WiMAX) communication systems, a cloud radio access network (CRAN) system, a future 5th generation (5G) system, a new radio (NR) system, or a future advanced public land mobile network (PLMN) system, etc.

[00102] The UE 101 shown above may be a terminal, an access terminal, a terminal unit, a terminal station, a mobile station (MS), a remote station, a remote terminal, a mobile terminal, a wireless communication device, a terminal agent, or a user device. The UE 101 may have a wireless transceiver function that is capable of communicating (e.g., performing wireless communication) with one or more network devices in one or more communication systems and receiving network services provided by the network devices. The network devices here include, but are not limited to, the network device 102.

[00103] The UE 101 may be a cellular telephone, a cordless telephone, a telephone with a session initiation protocol (SIP), a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device having wireless communication functions, a computing device or other processing devices connected to a wireless modem, devices installed on a vehicle, wearable devices, a UE in a future 5G network or a UE in a future advanced PLMN network, etc.

[00104] The network device 102 may be an access network device (or an access network node). The access network device refers to a device that provides network access functions, such as a base station of a radio access network (RAN). The network device 102 may, in particular, include a base station (BS) or include a BS and a radio resource management device for managing the BS. The network device 102 may also include a relay station (relay device), an access point, a BS in a future 5G network, a BS in a future advanced PLMN network, or a NR BS. The network device 102 may be a wearable device or a vehicular device. The network device 102 may also be a communication chip containing a communication module.

[00105] For example, the network device 102 includes, among other things, a next-generation 5G BS (gNB, short for gnodeB), an evolved node B (B eNB) in an LTE system, a radio network controller (RNC), a node B (NB) in a wideband code division multiple access (WCDMA) system, a wireless controller in a CRAN system, a BS controller (BSC), a BS transceiver station (BTS) in a Global Mobile Communication System (GSM) or a Code Division Multiple Access (CDMA) system, a home BS (HNB, short for home evolved node B or home node B), a baseband unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP) or mobile switching center.

[00106] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention can be applied to a wireless communication system 100. Fig. 2 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment. As illustrated in Fig. 2, the method includes the following.

[00107] In step S21, the network device 102 sends the first beam configuration information to the UE 101.

[00108] In step S22, the UE 101 receives the first beam configuration information sent by the network device 102.

[00109] In step S23, the UE 101 determines, based on the first beam configuration information, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel.

[00110] In some examples, the method further includes step S24, where in response to determining a detection beam for performing LBT detection in the unlicensed uplink channel, UE 101 performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00111] The first beam configuration information is configured to indicate the transmission beam(s) for sending the unlicensed uplink channel.

[00112] The detection beam used to perform LBT detection in the unlicensed uplink channel is a detection beam for performing directional LBT detection in the unlicensed uplink channel.

[00113] In some possible implementations, the method for determining a detection beam for an unlicensed uplink channel is applied to the unlicensed frequency range for NR from 52.6 GHz to 71 GHz.

[00114] The following examples are provided for clarification.

[00115] Example 1

[00116] For the physical uplink control channel (PUCCH), the UE may receive high-layer signaling from the network device. The high-layer signaling includes first beam configuration information. The first beam configuration information includes a plurality of spatial relationship information instances (spatialrelationinfo), and this plurality of spatial relationship information instances corresponds to a plurality of transmission beams used to send the unlicensed uplink channel, i.e., the plurality of spatial relationship information instances are used to indicate the sounding reference signal (SRS) transmission beams.

[00117] The sounding reference signal (SRS) may also be called the uplink reference signal. The main functions of the SRS include obtaining uplink channel state information, obtaining downlink channel state information, and beam control.

[00118] The UE also needs to receive medium access control element (MAC CE) signaling from the network device. The MAC CE signaling is used to activate one of a plurality of transmission beams used to send the unlicensed uplink channel, and the activated beam is used as a transmission beam for sending the PUCCH.

[00119] Example 2

[00120] To provide a physical configurable grant uplink shared channel (CG-PUSCH), the UE receives radio resource control (RRC) signaling from a network device. The RRC signaling includes first beam configuration information. The first beam configuration information indicates an SRS resource for implicitly indicating a transmission beam corresponding to the CG-PUSCH.

[00121] Example 3

[00122] For a dynamically scheduled physical uplink shared channel (PUSCH), the UE receives downlink control information (DCI) for scheduling from a network device. The scheduling DCI includes first beam configuration information. The first beam configuration information is configured to indicate one SRS resource to implicitly indicate a transmission beam corresponding to the PUSCH.

[00123] In embodiments of the present invention, a network device sends first beam configuration information to a UE to enable the UE to determine, based on the first beam configuration information, a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE can determine a correct detection beam without the need for the network device to indicate corresponding detection beam information, thereby saving transmission resources.

[00124] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. Fig. 3 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment. As illustrated in Fig. 3, the method includes the following.

[00125] The method includes:

[00126] step S110a, wherein the first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate the transmission beam(s) for sending the unlicensed uplink channel; and

[00127] step S120a, where a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the configuration information of the first beam.

[00128] In some examples, the method further includes step S130a, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, LBT detection is performed in the unlicensed uplink channel based on the determined detection beam.

[00129] The detection beam for performing LBT detection in the unlicensed uplink channel is a detection beam for performing directional LBT detection in the unlicensed uplink channel.

[00130] In some possible implementations, the detection beam for performing LBT detection in an unlicensed uplink channel is an omnidirectional beam.

[00131] In some possible implementations, the unlicensed uplink channel is a PUCCH, CG-PUSCH, or PUSCH.

[00132] In embodiments of the invention, the UE receives first beam configuration information from a network device and determines, based on the first beam configuration information, a transmission beam for sending an unlicensed uplink channel, and the UE determines, based on the transmission beam, a detection beam for performing LBT detection in the unlicensed uplink channel. Therefore, the UE can determine a correct detection beam without the need for the network device to indicate corresponding detection beam information, thereby saving transmission resources.

[00133] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00134] In step S110b, high-level signaling is received from the network device, wherein the high-level signaling includes LBT configuration information, and the LBT configuration information indicates that the LBT mode is a directional LBT.

[00135] In step S120b, first beam configuration information is received from the network device.

[00136] In step S130b, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the configuration information of the first beam.

[00137] In some examples, the method further includes step S140b, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, UE 101 performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00138] Once the UE receives high-layer signaling from the network device, the UE may determine, based on the LBT configuration information in the high-layer signaling, that the LBT mode is a directional LBT mode.

[00139] The first beam configuration information is configured to indicate the transmission beam(s) for sending the unlicensed uplink channel. The UE receives the first beam configuration information from the network device, determines the transmission beam for sending the unlicensed uplink channel based on the first beam configuration information, and determines, based on the transmission beam, the detection beam for performing LBT detection in the unlicensed uplink channel.

[00140] In embodiments of the invention, the UE receives high-level signaling and first beam configuration information from the network device to determine the LBT mode and the detection beam and perform LBT detection in the unlicensed uplink channel in the directional LBT. Therefore, the UE can determine the correct detection beam without the need for the network device to indicate the corresponding detection beam information, thereby saving transmission resources.

[00141] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. Fig. 4 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment. As illustrated in Fig. 4, the method includes the following.

[00142] In step S110c, first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending an unlicensed uplink channel.

[00143] In step S120c, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the transmission beam(s) indicated by the first beam configuration information and a condition negotiated in a protocol, wherein the condition negotiated in the protocol includes at least one of the first selection condition or the second selection condition.

[00144] In step S130c, the UE performs LBT detection in an unlicensed uplink channel based on the determined detection beam.

[00145] In some possible implementations, the first selection condition at least includes:

[00146] the detection beam is a transmission beam;

[00147] the coverage direction of the detection beam and the coverage direction of the transmission beam satisfy a predetermined relationship;

[00148] or,

[00149] the detection beam is connected to the transmission beam.

[00150] In some possible implementations, the second selection condition at least includes:

[00151] the beam width at a given degree of attenuation is maximum;

[00152] or,

[00153] The spatial relationship information index is minimal.

[00154] In embodiments of the present invention, the condition may be negotiated in a protocol. After determining a transmission beam for sending an unlicensed uplink channel, the UE may determine a detection beam for this unlicensed uplink channel based on the condition negotiated in the protocol, and performs LBT detection for this unlicensed uplink channel using the detection beam.

[00155] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00156] In step S110d, first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending an unlicensed uplink channel.

[00157] In step S120d, a detection beam for performing LBT detection in the unlicensed uplink channel is determined based on the transmission beam(s) indicated by the first beam configuration information and the first selection condition agreed upon in the protocol.

[00158] In some examples, the method further includes step S130d, where in response to determining a detection beam for performing LBT detection in the unlicensed uplink channel, the UE performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00159] In some possible implementations, the first selection condition at least includes:

[00160] the detection beam(s) is(are) the transmission beam(s);

[00161] the coverage direction of each detection beam and the coverage direction of the transmission beam(s) satisfy a predetermined relationship;

[00162] or,

[00163] the detection beam(s) are coupled to the transmission beam(s).

[00164] The following examples are provided for clarification.

[00165] Example 1

[00166] The first selection condition is condition 1, that is, "the detection beam(s) is(are) the transmission beam(s)," and the UE determines, based on the configuration information of the first beam, that beam A is the transmission beam. In this example, the UE may directly determine, based on condition 1, that beam A is the detection beam, and perform LBT detection using beam A.

[00167] Example 2

[00168] The first selection condition is condition 2, i.e., "the coverage direction of each detection beam and the coverage direction of the transmission beam(s) satisfy a predetermined ratio", the predetermined ratio is that the 3 dB beamwidth of the transmission beam is within the 3 dB beamwidth of each detection beam, the UE determines, based on the configuration information of the first beam, that the transmission beams of the unlicensed uplink channel include beam A, beam B, and beam C, and the beam that satisfies the predetermined ratio is beam A based on condition 2. In this example, beam A is determined as the detection beam, and LBT detection is performed using beam A.

[00169] Example 3

[00170] The first selection condition is condition 3, i.e., “detection beam(s) are associated with transmission beam(s),” and the base station associates 3 beams with the transmission beam of the unlicensed uplink channel, i.e., beam E, beam F, and beam G. In this example, the UE determines the transmission beam of the unlicensed uplink channel based on the configuration information of the first beam and determines, based on condition 3, that the beams satisfying the given relationship are beam E, beam F, and beam G.

[00171] In embodiments of the present invention, the first selection condition may be negotiated in a protocol. After determining the transmission beam of the unlicensed uplink channel, the UE may determine the detection beam(s) of the unlicensed uplink channel based on the first selection condition and performs LBT detection for the unlicensed uplink channel using such detection beam(s).

[00172] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00173] In step S110e, first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending an unlicensed uplink channel.

[00174] In step S120e, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the transmission beam(s) indicated by the first beam configuration information and the second selection condition agreed upon in the protocol.

[00175] In some examples, the method further includes step S130e, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, the UE performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00176] In some possible implementations, the second selection condition at least includes:

[00177] the beam width at a given degree of attenuation is maximum;

[00178] or,

[00179] The spatial relationship information index is minimal.

[00180] The following examples are provided for clarification.

[00181] Example 1

[00182] The first selection condition is condition 4, i.e., “the beam width at a given attenuation degree is maximum”, the UE determines, based on the configuration information of the first beam, that the transmission beams are beam A and beam B, and determines, based on condition 4, that the beam with the largest beam width at a given attenuation degree among beams A and B is beam A. In this example, beam A is determined as the detection beam for performing LBT detection.

[00183] Example 2

[00184] The first selection condition is condition 5, i.e., “the index of the spatial relationship information is minimum”, the UE determines, based on the first beam configuration information, that the transmission beams are beam A and beam B, and determines, based on condition 5, that the beam with the minimum index of the spatial relationship information between beam A and beam B is beam B. In this example, beam B is determined as the detection beam, and LBT detection is performed using beam B.

[00185] In embodiments of the present invention, the second selection condition may be negotiated in a protocol. After determining the transmission beam of the unlicensed uplink channel, the UE may determine the detection beam of the unlicensed uplink channel based on the second selection condition and performs LBT detection in the unlicensed uplink channel using such a detection beam. It is understood that in the above examples, the second selection condition is based on the selection result of the first selection condition. However, the second selection condition may not depend on the first selection condition. That is, the plurality of detection beams may be defined as a set of possible detection beams by other means, and a detection beam may be selected from the set based on the second selection condition.

[00186] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00187] In step S110, first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending the unlicensed uplink channel.

[00188] In step S120c, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the transmission beam(s) indicated by the first beam configuration information and the first selection condition and the second selection condition agreed upon in the protocol.

[00189] In step S130c, the UE performs LBT detection of the unlicensed uplink channel based on the determined detection beam.

[00190] In some possible implementations,

[00191] the first selection condition at least includes:

[00192] the detection beam(s) is(are) the transmission beam(s);

[00193] the coverage direction of each detection beam and the coverage direction of the transmission beam(s) satisfy a predetermined relationship;

[00194] or,

[00195] the detection beam(s) are coupled to the transmission beam(s).

[00196] In some possible implementations, the second selection condition at least includes:

[00197] the beam width at a given degree of attenuation is maximum;

[00198] or,

[00199] The spatial relationship information index is minimal.

[00200] The following example is provided for clarification.

[00201] For example,

[00202] The first selection condition is condition 3, i.e., “the detection beam(s) are associated with the transmission beam(s),” and the second selection condition is condition 5, i.e., “the beam width at a given degree of attenuation is maximum.”

[00203] The UE determines, based on the first beam configuration information, that the transmission beams are beam A and beam B. The UE determines that the beam satisfying both conditions 4 and 5 between beam A and beam B is beam A. In this example, the UE determines that the detection beam is beam A and performs LBT detection using beam A.

[00204] In embodiments of the invention, two conditions may be negotiated in the protocol, i.e., a first selection condition and a second selection condition. After determining the transmission beam(s) for the unlicensed uplink channel, the UE may determine the detection beam(s) for the unlicensed uplink channel based on at least one of these two conditions, and perform LBT detection in the unlicensed uplink channel using the detection beam(s).

[00205] A method for determining a detection beam for an unlicensed uplink channel according to an embodiment of the invention may be performed by a UE 101. The method includes the following.

[00206] In step S110d, first beam configuration information is received from the network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending the unlicensed uplink channel.

[00207] In step S 120d, one or more detection beams are determined based on the transmit beam(s) indicated by the first beam configuration information and the first selection condition agreed upon in the protocol.

[00208] In step S130d, one of the one or more detection beams is determined as a detection beam for performing LBT detection in an unlicensed uplink channel based on a second selection condition.

[00209] In step S140d, the UE performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00210] In some possible implementations, the first selection condition at least includes:

[00211] the detection beam(s) is(are) the transmission beam(s);

[00212] the coverage direction of each detection beam and the coverage direction of the transmission beam(s) satisfy a predetermined relationship;

[00213] or,

[00214] the detection beam(s) are coupled to the transmission beam(s).

[00215] In some possible implementations, the second selection condition at least includes: the beam width at a given degree of attenuation is minimal;

[00216] or,

[00217] The spatial relationship information index is minimal.

[00218] The following 4 examples are provided for clarification.

[00219] Example 1

[00220] The first selection condition is condition 1, the given relationship is that the 3 dB transmit beam width is within the 3 dB detection beam width, and the second selection condition is condition 4.

[00221] After determining the transmission beam(s) of the unlicensed uplink channel based on the configuration information of the first beam, the UE determines, based on condition 1, that the beams satisfying the given relationship are beam A, beam B, and beam C, and the beam having the largest 3 dB beamwidth among beams A, B, and C is beam A.

[00222] In this example, the UE may determine, based on condition 4, that the detection beam for the unlicensed uplink channel is beam A, and use beam A to perform LBT detection on the unlicensed uplink channel.

[00223] Example 2

[00224] The first selection condition is condition 2, the given relationship is that the 3 dB transmission beamwidth is within the 3 dB detection beamwidth, and the second selection condition is condition 5.

[00225] After determining, based on the first beam configuration information, the transmission beam(s) for sending the unlicensed uplink channel, the UE determines, based on condition 2, that the beams satisfying the given relationship are beam A, beam B, and beam C. The beam with the minimum index of the spatial relationship information among beam A, beam B, and beam C is beam B.

[00226] In this example, the UE may determine, based on condition 5, that the detection beam for the unlicensed uplink channel is beam B, and use beam B to perform LBT detection on the unlicensed uplink channel.

[00227] Example 3

[00228] The first selection condition is condition 3, 3 beams are associated with the transmission beam(s) for sending the unlicensed uplink channel, i.e. beam A, beam B and beam C, and the second selection condition is condition 4, where the specified attenuation degree is 3 dB.

[00229] After determining, based on the configuration information of the first beam, the transmission beam(s) for sending the unlicensed uplink channel, the UE determines, based on condition 3, that the beams associated with the transmission beam(s) are beam A, beam B, and beam C. Furthermore, the beam having the largest 3 dB bandwidth among beam A, beam B, and beam C is beam A.

[00230] In this example, the UE may determine, based on condition 4, that the detection beam for the unlicensed uplink channel is beam A, and use beam A to perform LBT detection on the unlicensed uplink channel.

[00231] Example 4

[00232] The first selection condition is condition 3, 3 beams are associated with the transmit beam(s) for sending the unlicensed uplink channel, i.e. beam A, beam B and beam C, and the second selection condition is condition 5.

[00233] After determining, based on the configuration information of the first beam, the transmission beam(s) for the unlicensed uplink channel, the UE determines, based on condition 3, that the beams associated with the transmission beam(s) are beam A, beam B, and beam C. Furthermore, the beam with a minimum index of the spatial relationship information among beam A, beam B, and beam C is beam B.

[00234] In this example, the UE may determine, based on condition 5, that the detection beam for the unlicensed uplink channel is beam B, and use beam B to perform LBT detection on the unlicensed uplink channel.

[00235] In embodiments of the present invention, a first selection condition and a second selection condition may be set. After determining the transmission beam(s) for sending the unlicensed uplink channel, the UE may determine a detection beam for the unlicensed uplink channel based on the first selection condition and the second selection condition in turn, and perform LBT detection in the unlicensed uplink channel using the detection beam.

[00236] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00237] In step S210a, the network device 102 sends first beam configuration information to the UE, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending the unlicensed uplink channel to enable the UE to determine, based on the first beam configuration information, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00238] In embodiments of the present invention, the network device sends configuration information of the first beam to the UE, so that the UE determines the transmission beam(s) for sending the unlicensed uplink channel and determines, based on the transmission beam(s), the detection beam for performing LBT detection in the unlicensed uplink channel. Therefore, the UE can accurately determine the detection beam based on the indication from the network device.

[00239] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00240] In step S210b, a high-level signaling is sent to the UE, in which the high-level signaling includes LBT configuration information, and the LBT configuration information indicates that the LBT mode is a directional LBT.

[00241] In step S220b, first beam configuration information is sent to the UE, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending the unlicensed uplink channel to enable the UE to determine, based on the first beam configuration information, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00242] After the network device sends high-layer signaling to the UE, the UE may determine whether to perform LBT detection in the directional LBT mode based on the LBT configuration information in the high-layer signaling.

[00243] After the network device sends the first beam configuration information to the UE, the UE may determine the transmission beam(s) for sending the unlicensed uplink channel based on the first beam configuration information, and determine, based on the transmission beam(s), the detection beam for performing LBT detection in the unlicensed uplink channel.

[00244] In embodiments of the invention, the network device sends high-level signaling and first beam configuration information to the UE, so that the UE can determine the LBT mode and the detection beam. Therefore, the UE can accurately determine the detection beam based on the indication from the network device.

[00245] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the present invention can be applied to a wireless communication system 100. Fig. 5 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment. As illustrated in Fig. 5, the method includes the following.

[00246] In step S51, the network device 102 sends configuration information of a second beam to the UE 101, wherein the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in an unlicensed uplink channel.

[00247] In step S52, the UE 101 receives the second beam configuration information from the network device 102.

[00248] In step S53, the UE 101 determines, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00249] In some examples, the method further includes step S44, where, in response to determining a detection beam for performing LBT detection in the unlicensed uplink channel, UE 101 performs LBT detection in the unlicensed uplink channel based on the determined detection beam.

[00250] In embodiments of the invention, the network device sends configuration information of the second beam to the UE to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE can accurately determine the detection beam based on an indication from the network device.

[00251] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. Fig. 6 is a flow chart illustrating a method for determining a detection beam for an unlicensed uplink channel according to an embodiment. As illustrated in Fig. 6, the method includes the following.

[00252] In step S510a, configuration information of a second beam is received from a network device, wherein the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in an unlicensed uplink channel.

[00253] In step S520a, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the configuration information of the second beam.

[00254] In some examples, the method further includes step S530a, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, LBT detection is performed in the unlicensed uplink channel based on the determined detection beam.

[00255] In some possible implementations, the unlicensed uplink channel is a PUCCH, CG-PUSCH, or PUSCH.

[00256] In embodiments of the invention, the UE receives configuration information of a second beam from a network device and determines, based on the configuration information of the second beam, a detection beam for performing LBT detection in an unlicensed uplink channel, so that the UE can accurately determine the detection beam based on an indication from the network device.

[00257] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00258] In step S510b, high-level signaling is received from the network device, wherein the high-level signaling includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in an unlicensed uplink channel.

[00259] In step S520b, a detection beam for performing LBT detection in an unlicensed uplink channel is determined based on the configuration information of the second beam.

[00260] In some examples, the method further includes step S530b, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, LBT detection is performed in the unlicensed uplink channel based on the determined detection beam.

[00261] In some possible implementations, the unlicensed uplink channel is a PUCCH or a CG-PUSCH.

[00262] In embodiments of the invention, the UE receives configuration information of a second beam from a network device via high-layer signaling and determines, based on the configuration information of the second beam, a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE can accurately determine the detection beam based on an indication from the network device.

[00263] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00264] In step S510c, configuration information of a second beam is received from a network device, wherein the configuration information of the second beam includes a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams.

[00265] In step S520c, CE MAC signaling is received from the network device, wherein the CE MAC signaling is configured to activate one of a plurality of uplink beams.

[00266] In step S530c, an activated beam in a plurality of instances of spatial relationship information is determined as a detection beam for performing LBT detection in an unlicensed uplink channel.

[00267] In some examples, the method further includes step S540c, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, LBT detection is performed in the unlicensed uplink channel based on the determined detection beam.

[00268] The following 2 examples are provided for clarification. Example 1

[00269] For PUCCH, the UE may receive second beam configuration information from a network device. The second beam configuration information includes a plurality of spatial relationship information instances (spatialrelationinfo), and the plurality of spatial relationship information instances correspond to a plurality of uplink beams. That is, the plurality of spatial relationship information instances are used to indicate SRS transmission beams.

[00270] The UE may receive MAC CE signaling from the network device. The MAC CE signaling is used to activate one of the uplink beams. The activated beam may be used as a detection beam to perform LBT detection on the unlicensed PUCCH, and LBT detection may be performed on the PUCCH using this detection beam.

[00271] Example 2

[00272] For CG-PUSCH, the UE may receive configuration information of a second beam from a network device. The configuration information of the second beam includes a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams. That is, the plurality of instances of spatial relationship information are used to indicate SRS transmission beams.

[00273] The UE may receive MAC CE signaling from the network device, and the MAC CE signaling is used to activate one of the uplink beams. The activated beam may be used as a detection beam to perform LBT detection on the unlicensed CG-PUSCH.

[00274] In embodiments of the invention, the UE determines the detection beam by means of CE MAC signaling, such that the UE accurately determines the detection beam based on an indication from the network device.

[00275] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00276] In step S510d, RRC signaling is received from a network device, wherein the RRC signaling includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT in an unlicensed uplink channel.

[00277] The following 2 examples are provided for clarification.

[00278] Example 1

[00279] For CG-PUSCH, the UE may receive RRC signaling from a network device. The RRC signaling includes second beam configuration information. The second beam configuration information indicates an SRS resource for implicitly indicating a detection beam corresponding to the unlicensed CG-PUSCH. Once the UE receives the RRC signaling, the UE may determine, based on the second beam configuration information in the RRC signaling, a detection beam corresponding to the unlicensed CG-PUSCH.

[00280] Example 2

[00281] For PUCCH, the UE may receive RRC signaling from a network device. The RRC signaling includes second beam configuration information. The second beam configuration information indicates an SRS resource for implicitly indicating a detection beam corresponding to the unlicensed PUCCH. Once the UE receives the RRC signaling, the UE may determine, based on the second beam configuration information in the RRC signaling, a detection beam corresponding to the unlicensed PUCCH.

[00282] In embodiments of the invention, the UE receives configuration information of a second beam from a network device via RRC signaling and determines the detection beam based on the configuration information of the second beam, so that the UE accurately determines the detection beam based on the indication of the network device.

[00283] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. In this method, the second beam configuration information is DCI scheduling. The method includes the following.

[00284] In step S510e, a scheduling DCI is received from a network device, wherein the scheduling DCI includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel.

[00285] In step S520e, a detection beam for performing LBT detection on unlicensed uplink channels is determined based on DCI scheduling.

[00286] In some examples, the method further includes step S330e, where in response to determining a detection beam for performing LBT detection in an unlicensed uplink channel, LBT detection is performed in the unlicensed uplink channel based on the determined detection beam.

[00287] In a possible example, with respect to a dynamically scheduled PUSCH, the UE may receive a scheduling DCI from a network device. The scheduling DCI includes configuration information of a second beam. The configuration information of the second beam indicates one SRS resource for indicating a detection beam. The detection beam is defined as a detection beam for performing LBT detection in an unlicensed uplink channel.

[00288] In embodiments of the present invention, the scheduling DCI is used as the second beam configuration information. The UE receives the scheduling DCI from the network device and determines the detection beam based on the scheduling DCI, so that the UE accurately determines the detection beam based on the indication from the network device.

[00289] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00290] In step S510f, in response to not receiving the second beam configuration information from the network device, a default detection beam is determined for performing LBT detection in the unlicensed uplink channel.

[00291] The default detection beam may be a transmit beam for sending an unlicensed uplink channel.

[00292] In embodiments of the invention, a default detection beam may be set. In response to not receiving the second beam configuration information from the network device, the UE may accurately determine the detection beam based on an indication from the network device.

[00293] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00294] In step S500g, first beam configuration information is received from a network device, wherein the first beam configuration information is configured to indicate transmission beam(s) for sending an unlicensed uplink channel.

[00295] In step S510g, in response to not receiving the second beam configuration information from the network device, a default detection beam is determined for performing LBT detection in the unlicensed uplink channel.

[00296] The default detection beam may be the transmission beam(s) for sending the unlicensed uplink channel. The UE may know the default detection beam after determining, based on the configuration information of the first beam, the transmission beam(s) for sending the unlicensed uplink channel.

[00297] In embodiments of the invention, a default detection beam may be set. In response to not receiving the second beam configuration information from the network device, the UE may accurately determine the detection beam based on an indication from the network device.

[00298] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a UE 101. The method includes the following.

[00299] In step S510h, in response to not receiving the second beam configuration information from the network device, a default detection beam is determined for performing LBT detection in the unlicensed uplink channel.

[00300] The default detection beam may be an omnidirectional beam.

[00301] In embodiments of the invention, a default detection beam may be set. In response to not receiving the second beam configuration information from the network device, the UE may determine the detection beam based on an indication from the network device.

[00302] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00303] In step S410a, configuration information of a second beam is sent to a UE, wherein the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in an unlicensed uplink channel, so as to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00304] In some possible implementations, the unlicensed uplink channel is a PUCCH, CG-PUSCH, or PUSCH.

[00305] In embodiments of the invention, the network device sends configuration information of the second beam to the UE to enable the UE to determine a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE can accurately determine the detection beam based on an indication from the network device.

[00306] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00307] In step S410b, high-level signaling is sent to the UE, wherein the high-level signaling includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection on an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection on the unlicensed uplink channel.

[00308] In some possible implementations, the unlicensed uplink channel is a PUCCH or a CG-PUSCH.

[00309] In embodiments of the invention, the network device sends configuration information of the second beam to the UE via high-layer signaling to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in an unlicensed uplink channel. Therefore, the UE accurately determines the detection beam based on an indication from the network device.

[00310] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00311] In step S410c, configuration information of the second beam is sent to the UE, wherein the configuration information of the second beam includes a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams. MAC CE signaling is used to activate one of the plurality of uplink beams.

[00312] In step S420c, MAC CE signaling is sent to the UE, in which the MAC CE signaling is used to activate one of a plurality of uplink beams to enable the UE to determine the activated beam in parts of the spatial relationship information as a detection beam for performing LBT detection in an unlicensed uplink channel.

[00313] In some possible implementations, the unlicensed uplink channel is a PUCCH or a CG-PUSCH.

[00314] In embodiments of the present invention, the network device sends MAC CE signaling to the UE to enable the UE to determine a detection beam. Therefore, the UE can accurately determine the detection beam based on an indication from the network device.

[00315] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00316] In step S410d, RRC signaling is sent to the UE, wherein the RRC signaling includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT detection on an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection on an unlicensed uplink channel, and to perform LBT detection on the unlicensed uplink channel using the determined detection beam.

[00317] In some possible implementations, the unlicensed uplink channel is a PUCCH or CG-PUSCH.

[00318] In embodiments of the invention, the network device sends configuration information of the second beam to the UE via RRC signaling to enable the UE to determine the detection beam based on the configuration information of the second beam. Therefore, the UE accurately determines the detection beam based on an indication from the network device.

[00319] A method for determining a detection beam for an unlicensed uplink channel according to embodiments of the invention may be performed by a network device 102. The method includes the following.

[00320] In step S410e, a scheduling DCI is sent to the UE, wherein the scheduling DCI includes configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel and perform LBT detection in the unlicensed uplink channel using the determined detection beam.

[00321] In some possible implementations, the unlicensed uplink channel is the PUSCH.

[00322] In embodiments of the present invention, the network device sends a scheduling DCI to the UE to enable the UE to determine a detection beam based on the scheduling DCI. Therefore, the UE accurately determines a detection beam based on an indication from the network device.

[00323] Based on the same idea as the above embodiments of the method, embodiments of the invention also provide a communication device that can have the functions of the UE in the above embodiments of the method and can be used to perform the steps performed by the UE according to the above embodiments of the method. The functions can be implemented by hardware, software, or hardware for executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

[00324] In a possible implementation, the communication device 700 illustrated in Fig. 7 may serve as a UE participating in the above-mentioned embodiments of the method and perform the steps performed by the UE in the above-mentioned embodiments of the method. As illustrated in Fig. 7, the communication device 700 may include a transceiver module 701 and a processing module 702. The transceiver module 701 and the processing module 702 are connected to each other. The transceiver module 701 is configured to support communication of the communication device 700. The transceiver module 701 may have wireless communication functions. For example, the transceiver module 701 may perform wireless communication with other communication devices via a radio interface. The processing module 702 is configured to support the communication device 700 to perform the processing operations in the above embodiments of the method, which include, among other things: generating information/messages sent by the transceiver module 701 and/or demodulating and decoding signals received by the transceiver module 701.

[00325] In an example, when performing the steps implemented by the UE, the transceiver module 701 is used to: receive configuration information of a first beam from a network device, wherein the configuration information of the first beam is configured to indicate a transmission beam for sending an unlicensed uplink channel. The processing module 702 is configured to determine, based on the configuration information of the first beam, a detection beam for performing LBT detection in the unlicensed uplink channel. In another example, when performing the steps implemented by the UE, the transceiver module 701 is configured to receive configuration information of a second beam from a network device, wherein the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in the unlicensed uplink channel. The processing module 702 is configured to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00326] When the communication device is a UE, its structure can be illustrated in Fig. 8. The device 800 can be a mobile phone, a computer, a digital broadcasting terminal, a message receiving device, a game console, a tablet device, a medical device, a fitness device, and a personal digital assistant.

[00327] As illustrated in Fig. 8, device 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, measurement component 814, and communication component 816.

[00328] The processing component 802 typically controls general operations of the device 800, such as operations associated with a display, a telephone call, data transmission, camera operation, and a recording operation. The processing component 802 may include one or more processors 820 for executing instructions for implementing all or part of the steps of the above-described methods. Moreover, the processing component 802 may include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module for facilitating interaction between the multimedia component 808 and the processing component 802.

[00329] Memory 804 is configured to store various types of data to support operation of device 800. Examples of such data include instructions for any applications or methods running on device 800, contact data, phone book data, messages, images, videos, etc. Memory 804 can be implemented using any type of volatile or nonvolatile memory devices or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read Only Memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

[00330] Power component 806 provides power to various components of device 800. Power component 806 may include a power management system, one or more power sources, and any other components associated with generating, controlling, and distributing power in device 800.

[00331] The multimedia component 808 includes a screen that provides an output interface between the device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen for receiving input signals from the user. The touch panel includes one or more touch sensors for recognizing touches, movements and gestures on the touch panel. The touch sensors may not only sense the boundary of a touch or swipe action, but also sense the period of time and pressure associated with a touch or swipe action. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[00332] The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC) configured to receive an external audio signal when the device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

[00333] The input/output interface 812 provides an interface between the processing component 802 and peripheral interface modules such as a keyboard, a control wheel, buttons, etc. The buttons may include, but are not limited to, a home button, a volume control button, a start button, and a lock button.

[00334] The sensing component 814 includes one or more sensors for providing an assessment of the state of various aspects of the device 800. For example, the sensing component 814 can detect an open/closed state of the device 800, a relative position of components, such as a display and a keyboard of the device 800, a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. The sensing component 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensing component 814 can also include a light sensor, such as a complementary metal oxide semiconductor (CMOS) image sensor or charge-coupled device (CCD) sensors, for use in imaging applications. In some embodiments, the sensing component 814 may also include an accelerometer sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[00335] The communication component 816 is configured to provide communication, wired or wireless, between the device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as Wi-Fi, 4G or 5G, or a combination thereof. In an embodiment, the communication component 816 receives a broadcast signal from an external broadcast control system or information associated with the broadcast via a broadcast channel. In an embodiment, the communication component 816 further includes a near field communication (NFC) module for short-range communication. For example, the NFC module can be implemented based on radio-frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wide band (UWB) technology, Blue Tooth (BT) technology, and other technologies.

[00336] In some embodiments, device 800 may be implemented with one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described methods.

[00337] In some embodiments, a computer-readable storage medium is provided that includes instructions, such as a memory 804 that contains the instructions. When the instructions are executed by the processor 820 of the device 800, the above methods are implemented. For example, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

[00338] Based on the same concept as the above-described embodiments of the method, embodiments of the invention also provide a communication device that can have the functions of the network device in the above embodiments of the method and can be used to perform the steps performed by the network device in the above embodiments of the method. The functions can be implemented by hardware, software, or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[00339] In a possible implementation, the communication device 900 illustrated in Fig. 9 may serve as a network device involved in the above-mentioned embodiments of the method and perform the steps performed by the network device in the above-mentioned embodiments of the method. As illustrated in Fig. 9, the communication device 900 may include a transceiver module 901 and a processing module 902. The transceiver module 901 and the processing module 902 are connected to each other. The transceiver module 901 is configured to support communication of the communication device 900. The transceiver module 901 may have wireless communication functions. For example, the transceiver module 901 may perform wireless communication with other communication devices via a radio interface. The processing module 902 is configured to support the communication device 900 for performing the processing operations in the above embodiments of the method, which include, among other things: generating information/messages sent by the transceiver module 901 and/or demodulating and decoding the received signals by the transceiver module 901.

[00340] In an example, when performing the steps implemented by the network device, the transceiver module 901 is used to send configuration information of a first beam to the UE, wherein the configuration information of the first beam is configured to indicate a transmission beam for sending an unlicensed uplink channel to enable the UE to determine, based on the configuration information of the first beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00341] In an example, when performing the steps implemented by the network device, the transceiver module 901 is used to send configuration information of a second beam to the UE, wherein the configuration information of the second beam is configured to indicate a detection beam for performing LBT detection in an unlicensed uplink channel, to enable the UE to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel.

[00342] When the communication device is a network device, its structure can also be illustrated in Fig. 10. The structure of the communication device is illustrated using a base station as an example. As illustrated in Fig. 10, the device 1000 includes a memory 1001, a processor 1002, a transceiver component 1003 and a power supply component 1006. The memory 1001 is connected to the processor 1002 and can be used to store a program and data necessary for the communication device 1000 to implement functions. The processor 1002 is configured to support the communication device 1000 to perform the corresponding functions of the above-described methods, and these functions can be implemented by calling the program stored in the memory 1001. The transceiver component 1003 can be a wireless transceiver that can be used to support the communication device 1000 to receive and send signals and/or data via a radio interface. The transceiver component 1003 may also be called a transceiver unit or a communication unit. The transceiver component 1003 may include a radio frequency component 1004 and one or more antennas 1005. The radio frequency component 1004 may be a remote radio unit (RRU) that may be used to transmit radio frequency signals and convert radio frequency signals and baseband signals. One or more antennas 1005 may be used to emit and receive radio frequency signals.

[00343] When the communication device 1000 needs to send data, the processor 1002 can perform baseband processing on the data to be sent and transmit baseband signals to the RRU. The RRU performs radio frequency processing on the baseband signals and sends radio frequency signals in the form of electromagnetic waves through an antenna. When data is sent to the communication device 1000, the RRU receives the radio frequency signals through the antenna, converts the radio frequency signals into baseband signals, and sends the baseband signals to the processor 1002. The processor 1002 converts the baseband signals into data and processes the data.

[00344] In some embodiments, a computer-readable storage medium is provided that includes instructions, such as a memory 1001 that contains instructions. When the instructions are executed by the processor 1002 of the device 1000, the above-described methods are implemented. For example, the computer-readable storage medium may be a ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[00345] Other forms of carrying out the invention will be apparent to those skilled in the art from consideration of this description and practice of the invention disclosed herein. The present invention is intended to cover any modifications, applications or adaptations of the invention that follow its general principles, including such departures from the description as come within known or customary practice in the art. It is intended that the description and examples be considered as illustrative only, and that the true scope and spirit of the invention be indicated by the following claims.

[00346] It should be understood that the invention is not limited to the precise construction described above and illustrated in the accompanying drawings, and that various modifications and changes can be made within its scope. It is intended that the scope of the invention be limited only by the appended claims.

INDUSTRIAL APPLICABILITY

[00347] The UE determines, based on the first beam configuration information or the second beam configuration information received from the network device, a detection beam for performing LBT detection in the unlicensed uplink channel, so that the UE can determine a correct detection beam without the need for the network device to indicate the corresponding detection beam information, thereby saving transmission resources. Or the UE may accurately determine the detection beam based on the indication from the network device.

Claims (46)

1. A method for determining a detection beam for an unlicensed uplink channel, performed by user equipment and comprising: receiving configuration information of a first beam from a network device, wherein the configuration information of the first beam is configured to specify a transmission beam for sending an unlicensed uplink channel; determining, based on the configuration information of the first beam, a detection beam for performing listen-before-talk (LBT) detection in the unlicensed uplink channel; and receiving high-level signaling from a network device, wherein the high-level signaling comprises LBT configuration information, and the LBT configuration information indicates that the LBT mode is directional LBT. 2. The method according to claim 1, wherein determining, based on the first beam configuration information, a detection beam for performing LBT detection in an unlicensed uplink channel includes at least one of the following: determining, based on the transmission beam specified by the first beam configuration information and a condition agreed upon in the protocol, a detection beam for performing LBT detection in the unlicensed uplink channel, wherein the condition agreed upon in the protocol comprises at least one of a first selection condition or a second selection condition; determining one or more detection beams based on a transmit beam specified by the first beam configuration information and a first selection condition agreed upon in the protocol; or determining, based on a second selection condition agreed upon in the protocol, one of the one or more detection beams as a detection beam for performing LBT detection in the unlicensed uplink channel. 3. The method according to claim 2, wherein the first selection condition includes at least one of the following: the detection beam is the transmission beam; the direction of coverage of the detection beam and the direction of coverage of the transmission beam satisfy a given ratio; or The detection beam is connected to the transmission beam. 4. The method according to claim 2, wherein the second selection condition includes at least one of the following: the beam width at a given degree of attenuation is maximum; or The index of spatial relationship information is minimal. 5. The method according to any one of claims 1 to 4, wherein the detection beam for performing LBT detection in the unlicensed uplink channel is an omnidirectional beam. 6. A method for determining a detection beam for an unlicensed uplink channel, performed by user equipment and comprising: receiving configuration information of a second beam from a network device, wherein the configuration information of the second beam is configured to indicate a detection beam for performing listen-before-talk (LBT) detection on an unlicensed uplink channel; and determining, based on the configuration information of the second beam, a detection beam for performing LBT detection in the unlicensed uplink channel, wherein receiving the second beam configuration information from the network device includes at least one of the following: receiving a high-level signal from a network device, wherein the high-level signal contains configuration information of the second beam; receiving radio resource control (RRC) signaling from a network device, wherein the RRC signaling comprises second beam configuration information; wherein the second beam configuration information is configured to indicate one sounding reference signal (SRS) resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel; or receiving from a network device downlink control information (DCI) for scheduling, wherein the scheduling DCI comprises configuration information of a second beam, and the configuration information of the second beam is configured to indicate one sounding reference signal (SRS) resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel. 7. The method according to claim 6, wherein the configuration information of the second beam comprises a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams, and the method further comprises: receiving MAC CE signaling from a network device, wherein the MAC CE signaling is configured to activate one of a plurality of uplink beams; and determining an activated beam in a plurality of instances of spatial relationship information as a detection beam for performing LBT detection in an unlicensed uplink channel. 8. The method of claim 6, wherein the unlicensed uplink channel is a physical uplink control channel (PUCCH) or a physical configurable grant shared uplink channel (CG-PUSCH). 9. The method of claim 6, wherein the unlicensed uplink channel is a physical uplink shared channel (PUSCH) or a configurable grant physical uplink shared channel (CG-PUSCH). 10. The method according to any of paragraphs 6-9, additionally including: in response to not receiving the second beam configuration information from the network device, determining a default detection beam to perform LBT detection in the unlicensed uplink channel. 11. The method of claim 10, wherein the default detection beam is a transmit beam for sending an unlicensed uplink channel or an omnidirectional beam. 12. A method for sending detection beam configuration information for an unlicensed uplink channel to a user equipment, performed by a network device and comprising: sending configuration information of a first beam to the user equipment, wherein the configuration information of the first beam is configured to indicate a transmit beam for sending the unlicensed uplink channel to enable the user equipment to determine, based on the configuration information of the first beam, a detection beam for performing listen-before-talk (LBT) detection on the unlicensed uplink channel; and sending high-level signaling to the user equipment, wherein the high-level signaling comprises LBT configuration information, and the LBT configuration information indicates that the LBT mode is directional LBT. 13. A method for sending detection beam configuration information for an unlicensed uplink channel to a user equipment, performed by a network device and comprising: sending configuration information of a second beam to the user equipment, wherein the configuration information of the second beam is configured to indicate a detection beam for performing listen-before-talk (LBT) detection on the unlicensed uplink channel, to enable the user equipment to determine, based on the configuration information of the second beam, a detection beam for performing LBT detection on the unlicensed uplink channel, wherein sending the second beam configuration information to the user equipment includes at least one of the following: sending a high-level signaling to the user equipment, wherein the high-level signaling contains configuration information of the second beam; sending radio resource control (RRC) signaling to the user equipment, wherein the RRC signaling comprises second beam configuration information, and the second beam configuration information is configured to indicate one SRS resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel; or sending downlink control information (DCI) for scheduling to the user equipment, wherein the scheduling DCI comprises configuration information of a second beam, and the configuration information of the second beam is configured to indicate one SRS resource for indicating a detection beam for performing LBT detection in an unlicensed uplink channel. 14. The method according to claim 13, wherein the configuration information of the second beam comprises a plurality of instances of spatial relationship information, and the plurality of instances of spatial relationship information correspond to a plurality of uplink beams, and the method further comprises: sending medium access control control element (MAC CE) signaling to the user equipment, wherein the MAC CE signaling is configured to activate one of the plurality of uplink beams to allow the user equipment to determine the activated beam in the plurality of instances of spatial relationship information as a detection beam for performing LBT detection in the unlicensed uplink channel. 15. A communication device comprising: memory for storing a computer program; and a processor for executing a computer program for performing the method according to any of paragraphs 1-5. 16. A machine-readable data carrier on which instructions are stored, upon calling and executing which the computer performs the method according to any of paragraphs 1-5.