Method and apparatus for determining an energy detection threshold

Abstract

This application relates to the field of wireless communications. A method and apparatus for determining an energy detection (ED) threshold are provided. The method includes receiving a first ED threshold configured by a network device, and determining a second ED threshold used to perform LBT (Listen Before Talk) before uplink transmission, the second ED threshold being equal to or not equal to the first ED threshold. Since the ED threshold actually used during LBT can be determined before uplink transmission, the network device and a terminal can reach an agreement on the ED threshold actually used by the terminal during LBT, and the network device can determine a transmission mode for transmitting data to the terminal according to the second ED threshold.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication, and particularly to a method and apparatus for determining an energy detection threshold.

Background Art

[0002] To ensure that communication systems in the unlicensed spectrum can fairly share unlicensed spectrum resources, the 3rd Generation Partnership Project (3GPP) (registered trademark) has introduced a listen before talk (LBT) mechanism into the license assisted access (LAA) technology of the present disclosure.

[0003] The LBT mechanism is used for a communication device (e.g., a terminal) in a communication system to listen to a channel in the unlicensed spectrum to determine the idle / busy state of the channel before each communication system accesses the channel. Generally, the process of a terminal listening to a channel includes a process of detecting the energy of a carrier in the channel for a short period (e.g., 9 microseconds or 20 microseconds). When the terminal detects that the energy of the carrier in the channel is less than the energy detection (ED) threshold set for the terminal, the channel is considered to be in an idle state. In contrast, when the terminal detects that the energy of the carrier in the channel is equal to or greater than the ED threshold, the channel is considered to be in a busy state.

[0004] The base station may configure the ED threshold of the terminal. However, it is difficult for the base station to determine whether the ED threshold actually used by the terminal in the process of listening to the channel is the ED threshold configured by the base station. Therefore, there is an urgent need for a method to determine the ED threshold actually used by the terminal in the process of listening to the channel.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present disclosure provides a method and apparatus for determining an ED threshold to solve the problem that the ED threshold actually used by a terminal cannot be determined in the process of listening to a channel in the prior art method. The technical means are as follows.

Means for Solving the Problems

[0006] In one aspect, a method for determining an ED threshold is provided, including the following steps.

[0007] Receive a first ED threshold configured (set. configure) by a network device.

[0008] Determine a second ED threshold. The second ED threshold is used to perform LBT (listen before talk) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0009] In one aspect, a method for determining an ED threshold is provided, including the following steps.

[0010] The first ED threshold of the terminal is configured (set. configure).

[0011] Determine a second ED threshold. The second ED threshold is used for the terminal to perform LBT (listen before talk) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0012] In one aspect, a device for determining an ED threshold is provided, including the following.

[0013] The receiving module is used to receive a first ED threshold configured by a network device.

[0014] The processing module is used to determine a second ED threshold. The second ED threshold is used to perform LBT (listen before talk) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0015] In one aspect, a device for determining an energy detection (ED) threshold including the following is provided.

[0016] The processing module is used to configure a first ED threshold of a terminal.

[0017] The processing module is used to determine a second ED threshold. The second ED threshold is used by the terminal to perform LBT (listen before talk) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0018] In one aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores at least one instruction. When the at least one instruction is executed by the processor, it is used to perform steps related to receiving a first ED threshold configured by a network device.

[0019] In one aspect, a network device is provided. The network device includes a processor and a memory. The memory stores at least one instruction. When the at least one instruction is executed by the processor, it is used to perform steps related to configuring a first ED threshold.

[0020] In one aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. The instructions are executed by a processor to perform the steps of any one of the methods.

[0021] The technical solution according to the embodiment of the present disclosure has at least the following beneficial effects.

Effects of the Invention

[0022] By determining the ED threshold actually used during LBT before uplink transmission, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0023] To more clearly explain the technical solution in the embodiment of the present disclosure, the drawings necessary for the description of the embodiment are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. A person skilled in the art can obtain other drawings according to the drawings without creative efforts.

Brief Description of the Drawings

[0024]

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Embodiments for Carrying Out the Invention

[0025] To make the object, technical solution and advantages of the present disclosure clearer, the implementation manner of the present disclosure will be described in more detail below with reference to the drawings.

[0026] Before describing in detail the data transmission method in an unlicensed spectrum according to an embodiment of the present disclosure, the terms and communication system according to the embodiment of the present disclosure will be briefly introduced below.

[0027] The unlicensed spectrum is the spectrum available for wireless device communication divided by country and region. This spectrum is generally considered to be shared spectrum, that is, communication devices in different communication systems can use the spectrum without applying for a separate spectrum license from the government as long as they meet the regulatory requirements set by the country or region on the spectrum.

[0028] The LBT mechanism means that before a transmitter transmits data to a receiver in the unlicensed spectrum, it is necessary to perform ED on the channel for a certain period according to the regulations. The receiver and the transmitter are communication devices in the unlicensed spectrum. If the result of the ED indicates that the channel is in an idle state, the transmitter transmits data to the receiver. If the result of the ED indicates that the channel is in an occupied state, the transmitter backs off for a certain period according to the regulations and continues to monitor the channel until the result of the monitoring indicates an idle state, and then it is necessary to transmit data to the receiver. The result of the ED refers to the magnitude relationship between the energy of the carrier in the channel and the ED threshold. If the energy of the carrier in the channel is less than the ED threshold, the channel is considered to be in an idle state. Conversely, if the energy of the carrier in the channel is greater than or equal to the ED threshold, the channel is considered to be in an occupied state. Optionally, the LBT mechanism is also called the ED mechanism.

[0029] The channel occupancy time (COT) is such that in an unlicensed spectrum, a communication device needs to perform LBT. When LBT is successful, the communication device acquires one COT for data transmission. To ensure fairness, during one transmission, the period for which a communication device uses a channel in the unlicensed spectrum to transmit signals cannot exceed the maximum channel occupancy time (MCOT). In the unlicensed spectrum, for the COT acquired by a network device (the network device includes a network-side device or a base station), the network device shares the COT with a terminal (user equipment) to transmit an uplink signal or an uplink channel. In this case, the terminal uses an LBT method with a higher priority than when it tries to acquire a channel by itself, and acquires the right to use the channel with a higher probability.

[0030] As pointed out in the 98b meeting of the Radio Access Network (RAN) 1, if the ED threshold of the terminal is configured (set) by the network device and the terminal applies the ED threshold for LBT, when the network device shares the COT of the terminal, the network device transmits a control channel, a broadcast channel, and a broadcast signal in the shared COT. Also, in the shared COT, the network device transmits a control channel, a data channel, and a reference signal to the terminal. If the terminal does not apply the ED threshold configured (set) by the network device in the LBT procedure, the network device can only transmit a control channel, a broadcast channel, and a broadcast signal in the shared COT, and it is difficult to transmit a control channel, a data channel, and a reference signal to the terminal. Furthermore, the time-domain length of the signal transmitted by the network device is also limited. For subcarrier intervals of 15 kilohertz (kHz), 30 kHz, and 60 kHz, the transmissible signal length cannot exceed two symbols, four symbols, and eight symbols respectively.

[0031] Next, a communication system according to an embodiment of the present disclosure will be briefly introduced.

[0032] The technical solutions of the embodiments of the present disclosure may be applicable to various communication systems that are compatible with unlicensed spectrum, such as Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Advanced Long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolved systems of NR systems, LTE-based (LTE-U) systems accessing unlicensed spectrum, NR-based (NR-U) systems accessing unlicensed spectrum, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), next-generation communication systems, or other communication systems. The embodiments of the present disclosure will be described by taking the case where the communication system is an NR-U system as an example.

[0033] Generally, conventional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems come to support not only conventional communication but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, etc. The embodiments of the present disclosure may also be applicable to communication systems.

[0034] The system architectures and service scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions according to the embodiments of the present disclosure. As known to those skilled in the art, with the evolution of network architectures and the emergence of new business scenarios, the technical solutions according to the embodiments of the present disclosure are equally applicable to similar technical problems.

[0035] Exemplarily, a communication system 100 applicable to an embodiment of the present disclosure is as shown in FIG. 1. The communication system 100 may include a network device 110. The network device 110 may be a device that communicates with a terminal 120 (also referred to as a communication terminal or a terminal). The network device 110 can provide communication coverage in a specific geographical area and communicate with terminals located in the coverage area. Optionally, the network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network device in a 5G network, a network device in a future communication system, etc.

[0036] The communication system 100 further includes at least one terminal 120 located within the coverage range of the network device 110. As used herein, "terminal" includes a connection via a wired line (e.g., a connection via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable), another data connection / network, a wireless interface (e.g., a digital television network such as a cellular network, a wireless local area network (WLAN), a DVB-H network, a satellite network, an AM-FM broadcast transmitter), a device of another terminal configured to transmit and receive communication signals, and / or an Internet of Things (IoT) device. However, it is not limited thereto. A terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", or a "mobile terminal". Examples of mobile terminals include a satellite or mobile phone, a personal communication system (PCS) terminal that can combine a cellular radio phone with data processing, fax, and data communication functions, a wireless phone, a pager, an Internet / intranet access, a web browser, a notebook, a calendar, and / or a personal digital assistant (PDA) that may include a global positioning system (GPS) receiver, and other electronic devices that may include a conventional laptop and / or palmtop receiver or a wireless phone transceiver. However, it is not limited thereto. The terminal may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile platform, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a mobile phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a portable device equipped with a wireless communication function, a computing device, another processing device connected to a wireless modem, an in-vehicle device and a wearable device, a terminal in a 5G network, a terminal device in a future evolved PLMN, etc.

[0037] Optionally, device - to - device (D2D) communication can be performed between terminals 120.

[0038] Optionally, a 5G communication system or 5G network may also be referred to as a new radio (NR) system or NR network.

[0039] FIG. 1 illustrates one network device 110 and two terminals. 120 Optionally, the communication system 100 may include a plurality of network devices 110 and may include other numbers of terminals within the coverage range of each network device. 110 The embodiments of the present disclosure are not limited thereto. 120

[0040] Optionally, the communication system 100 may also include other network entities such as a network controller, a mobility management entity, etc. The embodiments of the present disclosure are not limited thereto.

[0041] It should be understood that the devices with communication functions within the network / system in the embodiments of the present disclosure are called communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication devices may include the network device 110 and the terminal 120 with communication functions. Since the network device 110 and the terminal 120 may be the above - specific devices, the description is omitted here. The communication devices may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc. The embodiments of the present disclosure are not limited to these.

[0042] ​Generally, a network device configures (sets) an ED threshold of a terminal for LBT. However, when the terminal performs LBT, the actually used ED threshold is not the ED threshold configured by the network device. Therefore, it may be difficult for the network device to determine whether to apply restricted transmission or unrestricted transmission to transmit data to the terminal. Restricted transmission means that the length of data that can be transmitted by the network device is limited, and the control channel, data channel, and reference signal cannot be transmitted to the terminal. Therefore, unrestricted transmission means that the length of data that can be transmitted by the network device is not limited, and the control channel, data channel, and reference signal can be transmitted to the terminal.

[0043] FIG. 2 exemplarily shows a method for determining an ED threshold according to an embodiment of the present disclosure. The method may be applied to the terminal 120 in the communication system 100 shown in FIG. 1. The method may include the following steps 201 to 202.

[0044] In step 201, a first ED threshold configured by the network device is received.

[0045] In step 202, a second ED threshold is determined. The second ED threshold is used to perform LBT before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0046] The second ED threshold may be the ED threshold actually used when the terminal performs LBT before uplink transmission.

[0047] In summary, in the method for determining an ED threshold according to an embodiment of the present disclosure, the ED threshold actually used during LBT can be determined before uplink transmission. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0048] Note that the network device learns the second ED threshold actually used by the terminal during LBT before uplink transmission based on the same strategy as the terminal.

[0049] Also, in some optional embodiments, step 201 is an optional step.

[0050] In an embodiment of the present disclosure, the network device may configure two ED thresholds for the terminal. That is, there are two first ED thresholds, one being a general maximum ED threshold and the other being an ED threshold for a shared COT. The maximum ED threshold refers to the maximum ED threshold among a plurality of ED thresholds applicable when the terminal performs LBT, and the maximum ED threshold is defined by a communication protocol. The ED threshold for the shared COT refers to an ED threshold that enables the terminal and the base station to share the COT.

[0051] Therefore, in step 201, the first ED threshold received and configured by the network device may be the maximum ED threshold or the ED threshold for the shared COT. In step 202, determining the second ED threshold actually used during LBT before uplink transmission may further include determining whether the second ED threshold actually used during LBT before uplink transmission is the ED threshold for the shared COT or the maximum ED threshold. Naturally, the network device may also configure other types of ED thresholds for the terminal. The present disclosure is not limited thereto.

[0052] In an embodiment of the present disclosure, the network device configures (sets) the ED threshold of the terminal according to radio resource control (RRC) parameters. The ED threshold may be represented as ED_RRC. Optionally, the second ED threshold actually used by the terminal during LBT before uplink transmission may be represented as ED_actual. If the second ED threshold is equal to the first ED threshold, it may be represented as ED_actual = ED_RRC.

[0053] In an embodiment of the present disclosure, it is necessary to explain in advance that the uplink transmission resource refers to the uplink transmission time domain resource.

[0054] Optionally, for step 202, the embodiment of the present disclosure provides three methods for the terminal to determine the second ED threshold. In the first determination method, the network device can force the terminal to determine the first ED threshold as the second ED threshold. Therefore, the network device can clarify the second ED threshold actually used by the terminal during LBT before uplink transmission. In the second determination method, the terminal determines the second ED threshold according to the first information. Therefore, the network device can also know the second ED threshold actually used by the terminal during LBT before uplink transmission according to the first information. In the third determination method, the terminal transmits the determined second ED threshold to the network device according to the second information, that is, the terminal can select the second ED threshold by itself and notify the network device according to the second information. Therefore, the network device can know the second ED threshold actually used by the terminal during LBT before uplink transmission. The following describes the three determination methods.

[0055] In the first determination method, the terminal determines the first ED threshold as the second ED threshold actually used during LBT before uplink transmission. After the network device configures the first ED threshold of the terminal, the terminal can use the first ED threshold as the second ED threshold actually used during LBT before uplink transmission in the following two scenarios. In the first scenario, the uplink transmission is a scheduled uplink transmission. The terminal uses the first ED threshold as the second ED threshold during LBT before the scheduled uplink transmission. In the second scenario, the uplink transmission is a pre-configured uplink transmission. The terminal uses the first ED threshold as the second ED threshold during LBT before the pre-configured uplink transmission.

[0056] In the second determination method, the second ED threshold actually used during LBT before uplink transmission is determined according to the first information. Optionally, the first information includes at least one of the following two types of first information.

[0057] For the first implementation manner of the first information, the first information includes the first indication information in the downlink control information (DCI). Optionally, the DCI is used to schedule the uplink transmission, or is used to trigger the pre-configured uplink transmission, or is a common group indication control signal. The common group indication control signal may include the group common PDCCH. For example, the DCI may be DCI2_0. The full English name of PDCCH is physical downlink control channel.

[0058] The first indication information is set in DCI for scheduling uplink transmission. The network device can perform target processing for each scheduled terminal. For example, the network device can determine the ED threshold used for the scheduling resources of each terminal.

[0059] The first indication information is set in DCI for triggering pre-configured uplink transmission. The network device can apply the activated DCI to determine the ED threshold used for at least one pre-configured uplink resource.

[0060] Setting the first indication information in DCI for scheduling uplink transmission or DCI for triggering pre-configured uplink transmission both indicates how to set the ED threshold for each terminal.

[0061] In another optional embodiment, the network device can also set the first indication information in the common group physical downlink control channel. Therefore, the DCI can indicate to one group of terminals how to set the ED threshold. Since it is not necessary to indicate to each terminal how to set the ED threshold, the purpose of reducing the control signaling overhead is achieved.

[0062] Regarding the second embodiment of the first information, the first information includes time domain unit information. The time domain unit includes time slots, time slot groups, symbols, symbol groups, frames, frame groups, sub-frames, sub-frame groups, etc. In the embodiments of the present disclosure, a time domain unit including a first symbol outside the uplink transmission resource for uplink transmission is taken as an example for description. The first symbol may be a symbol or a symbol group. Optionally, the uplink transmission resource includes scheduled uplink transmission resources and pre-configured uplink transmission resources.

[0063] Optionally, the first information is the first implementation manner, or the first information is the second implementation manner, or the first information is the first implementation manner and the second implementation manner at the same time.

[0064] When the first information includes the first implementation manner, the second determination method may include the following steps. When the first indication information instructs to apply the first ED threshold as the second ED threshold, it is determined that the first ED threshold is the second ED threshold actually used during LBT before uplink transmission.

[0065] The first indication information is explicit indication information or implicit indication information. The first indication information may be the first bit within the designated bit domain of the DCI, and the first bit may include at least one bit. The designated bit domain may be the reserved bit domain of the DCI or the multiplexed bit domain of the DCI.

[0066] In an embodiment of the present disclosure, when the designated bit domain is the reserved bit domain, the first indication information is explicit indication information. Explicit indication information means that the bits within the bit domain can directly indicate that the second ED threshold is the first ED threshold. The reserved bit domain refers to the bit domain of the DCI for specifically indicating that the second ED threshold is the first ED threshold. Specifically, the bits within the bit domain are used to indicate that the second ED threshold is the first ED threshold.

[0067] For example, the network device configures the first ED threshold of the terminal. After the network device completes the configuration, in the DCI for scheduling the terminal for uplink transmission, the terminal is instructed to use the first ED threshold as the second ED threshold for LBT. The terminal uses the first ED threshold during LBT before the scheduled uplink transmission. In the DCI, the first indication information may be a reserved bit domain having a length of 1 bit. If the bit in the bit domain indicates "1", it means that the second ED threshold is equal to the first ED threshold. Conversely, if the bit in the bit domain indicates "0", it means that the second ED threshold is not equal to the first ED threshold.

[0068] In an embodiment of the present disclosure, when the designated bit domain is a multiplexed bit domain, the first indication information is implicit indication information. The implicit indication information refers to that the bit in the bit domain can indirectly indicate that the second ED threshold is the first ED threshold. That is, the bit in the bit domain may be used to indicate that the second ED threshold is the first ED threshold or to indicate other indication information. The multiplexed bit domain refers to multiplexing the original bit domain of the DCI. The original bit domain of the DCI may be a frequency domain resource allocation (FDRA) domain, a time domain resource allocation (TDRA) domain, a modulation and coding scheme (MCS) domain, a channel coding redundancy version (RV) domain, a physical uplink control channel resource indicator (PUCCH resource indicator) domain, a PDSCH-to-HARQ feedback timing indicator domain, and a downlink allocation index domain. The multiplexed bit domain multiplexes any one of the bit domains.

[0069] In another optional embodiment, the bit domain may also be set to indicate a channel access priority class (CAPC) in the DCI. When the terminal determines that the CAPC indicated in the DCI is different from the CAPC of the data to be uploaded by the terminal, the terminal may consider that the network device needs to share the COT with the terminal, and may use the first ED threshold as the actual second ED threshold. That is, in the embodiment, according to the relationship between the CAPC indicated in the DCI and the CAPC of the data to be uploaded by the terminal, the terminal determines whether to use the first ED threshold as the actual second ED threshold.

[0070] In another optional embodiment, the bit domain may also be set to indicate whether to share the COT of the terminal in the DCI. When the terminal determines that the DCI indicates that the network device needs to share the COT with the terminal, the terminal may use the first ED threshold as the actual second ED threshold. That is, in the embodiment, according to whether the DCI indicates that the network device needs to share the COT with the terminal, the terminal determines whether to use the first ED threshold as the second ED threshold.

[0071] Of course, in the above embodiment, the DCI for scheduling the terminal for uplink transmission is described by way of example. In another optional embodiment, the DCI may be a DCI for activating a pre-configured uplink transmission by the terminal. For example, the network device configures the first ED threshold of the terminal. After the network device completes the configuration, in the DCI for activating the pre-configured uplink transmission of the terminal, the terminal is instructed to use the first ED threshold as the second ED threshold for LBT. The terminal uses the first ED threshold during LBT before the pre-configured uplink transmission.

[0072] When the first information includes the second implementation manner, the second determination method may include the following steps. When the information of the time domain unit (including the first symbol in the embodiment of the present disclosure) satisfies the first condition, it is determined that the first symbol is used to indicate that the second ED threshold is the first ED threshold.

[0073] The first symbol refers to a symbol outside the uplink transmission resource. Optionally, the first symbol may include at least one of the following three types of symbols.

[0074] The first type of symbol is the first symbol after the last symbol among the symbols included in the uplink transmission resource.

[0075] Exemplarily, FIG. 3 schematically shows one type of the first symbol. FIG. 3 shows two time slots in the time domain, and each slot includes 14 symbols. 12 of the 14 symbols included in the first slot correspond to the uplink (UL) transmission resource. As seen in FIG. 3, the first symbol is symbol D. Symbol D is the first symbol after the last symbol among the symbols included in the UL transmission resource.

[0076] The second type of symbol is at least one consecutive symbol after the last symbol among the symbols included in the uplink transmission resource. The at least one symbol includes the first symbol after the last symbol.

[0077] Exemplarily, FIG. 4 schematically shows another type of first symbol. Similar to FIG. 3, FIG. 4 shows two slots in the time domain, and each slot contains 14 symbols. Twelve of the 14 symbols included in the first slot correspond to UL transmission resources. As seen in FIG. 4, the first symbol includes two consecutive symbols D. The two consecutive symbols D are two consecutive symbols after the last symbol among the symbols included in the UL transmission resources. Naturally, in any other optional implementation, the first symbol may include three, four, five or more consecutive symbols.

[0078] The third type of symbol is at least one symbol from the last symbol among the symbols included in the uplink transmission resources to the first symbol among the symbols included in the preconfigured downlink transmission resource closest to the uplink transmission resource.

[0079] Exemplarily, FIG. 5 schematically shows yet another type of first symbol. Similar to FIG. 3, FIG. 5 shows two slots in the time domain, and each slot contains 14 symbols. Twelve of the 14 symbols included in the first slot correspond to UL transmission resources. FIG. 5 also shows a preconfigured downlink transmission resource closest to the UL transmission resource, for example, a downlink transmission resource corresponding to a synchronization signal block (SSB). As seen in FIG. 5, the first symbol includes symbol D. Symbol D is a symbol from the last symbol included in the UL transmission resources to the first symbol included in the downlink transmission resource corresponding to the preconfigured downlink transmission SSB.

[0080] FIG. 5 shows pre-configured downlink transmission for SSB for illustration purposes. In other optional embodiments, the pre-configured downlink transmission may be at least one of the downlink transmissions of SSB, channel state information reference signal (CSI-RS) transmission, physical downlink control channel (PDCCH) transmission, and physical downlink shared channel (PDSCH) transmission.

[0081] Optionally, the first condition includes at least one of the following two first conditions.

[0082] For the first embodiment of the first condition, the first symbol is not an uplink symbol. That is, the type of the first symbol is not an uplink symbol.

[0083] For the second embodiment of the first condition, the first symbol overlaps or partially overlaps with the symbol included in the downlink transmission resource for the pre-configured downlink transmission.

[0084] Optionally, the first condition is the first embodiment, or the first condition is the second embodiment, or the first condition is both the first embodiment and the second embodiment at the same time.

[0085] For the first embodiment, continuing the description by taking the first symbol described in FIGS. 3 to 5 as an example.

[0086] In the first symbol described in FIG. 3, the network device configures the first ED threshold of the terminal. After the configuration is completed, the network device schedules the terminal for uplink transmission, and the terminal determines a second ED threshold according to the first symbol outside the uplink transmission resource. The first symbol outside the uplink transmission resource refers to the first symbol after the last symbol among the symbols included in the uplink transmission resource, that is, the first type of symbol. For example, the terminal determines the second ED threshold according to the type of the first symbol outside the uplink transmission resource. The type of the first symbol may include an uplink symbol, a downlink symbol, and a flexible symbol. If it is determined that the type of the first symbol D in FIG. 3 is not an uplink symbol, the terminal determines to use the first ED threshold as the second ED threshold. The terminal may obtain the uplink and downlink information of the first symbol by the broadcast message (system information block, SIB) of the network device, such as SIB1. The terminal may also obtain the uplink and downlink information of the first symbol by the control message transmitted by the network device, such as the slot format indicator (SFI).

[0087] In the first symbol described in FIG. 4, the network device configures the first ED threshold of the terminal. After the configuration is completed, the network device schedules the terminal for uplink transmission, and the terminal determines the second ED threshold according to the first symbol outside the uplink transmission resource. The first symbol outside the uplink transmission resource refers to the second type of symbol, that is, at least one consecutive symbol after the last symbol among the symbols included in the uplink transmission resource, and at least one symbol includes the first symbol after the last symbol. For example, the terminal determines the second ED threshold according to the type of the first symbol outside the uplink transmission resource. The type of the first symbol includes uplink symbols, downlink symbols, and flexible symbols. If it is determined that neither of the types of the two consecutive symbols D in FIG. 4 is an uplink symbol, the terminal determines to use the first ED threshold as the second ED threshold. The terminal may obtain the uplink and downlink information of the first symbol from the SIB1 of the network device. The terminal may also obtain the uplink and downlink information of the first symbol from the control message transmitted by the network device, for example, SFI.

[0088] In the first symbol described in FIG. 5, the network device configures the first ED threshold of the terminal. After the configuration is completed, the network device schedules the terminal for uplink transmission, and the terminal determines the second ED threshold according to the first symbol outside the uplink transmission resource. The first symbol outside the uplink transmission resource refers to at least one symbol from the last symbol included in the uplink transmission resource to the first symbol included in the preconfigured downlink transmission resource closest to the uplink transmission resource among the symbols included in the uplink transmission resource. For example, the terminal determines the second ED threshold according to the type of the first symbol outside the uplink transmission resource. The type of the first symbol includes uplink symbols, downlink symbols, and flexible symbols. If it is determined that the type of symbol D in the interval between the uplink transmission resource and the preconfigured downlink transmission resource in FIG. 5 is not an uplink symbol, the terminal determines to use the first ED threshold as the second ED threshold. In the embodiment described in FIG. 5, the symbol in the interval is symbol D. In any other optional implementation, the number of symbols in the interval may be plural, for example, two, three, or more. The number of symbols in the interval may also be related to the SCS. For example, when the SCS is 15 kHz and 30 kHz, the number of symbols in the interval may be one or two. When the SCS is 60 kHz, the number of symbols in the interval may be one, two, or three.

[0089] For the second implementation, please refer to FIG. 6. The first symbol in the second implementation may also be any one of the first symbols of the first type to the third type. Hereinafter, it will be described by taking the first symbol as the first symbol of the second type as an example.

[0090] FIG. 6 schematically shows a second embodiment of the first symbol that satisfies the first condition. Similar to FIG. 3, FIG. 6 shows two slots in the time domain, and each slot contains 14 symbols. Twelve of the 14 symbols included in the first slot correspond to UL transmission resources. FIG. 6 also shows a preconfigured downlink transmission resource closest to the UL transmission resource, for example, a downlink transmission resource corresponding to an SSB. As can be seen in FIG. 6, the first symbol includes four consecutive symbols D, and the four consecutive symbols D include the first symbol after the last symbol included in the UL transmission resource. The four symbols partially overlap with the preconfigured downlink transmission SSB, that is, three symbols overlap. FIG. 6 shows the preconfigured downlink transmission of the SSB for illustration. In other optional embodiments, the preconfigured downlink transmission may be at least one downlink transmission among SSB transmission, CSI-RS transmission, PDCCH transmission, and PDSCH transmission.

[0091] It should be noted that the descriptions of FIGS. 3 to 6 are that when the network device configures the first ED threshold of the terminal and after the network device completes the configuration, when the network device schedules the terminal for uplink transmission, the terminal determines the second ED threshold. In other optional embodiments, the embodiments described in FIGS. 3 to 6 also mean that when the network device configures the first ED threshold of the terminal and after the network device completes the configuration, when the network device preconfigures the uplink transmission of the terminal, the terminal determines the second ED threshold.

[0092] For example, taking the embodiment shown in FIG. 6 as an example, the network device configures the first ED threshold of the terminal. After the network device completes the configuration, the network device preconfigures the uplink transmission of the terminal. The terminal determines the second ED threshold according to the symbols at the interval between the uplink transmission resource and the preconfigured downlink transmission resource closest to it.

[0093] Optionally, as described in the introduction of the first information, the first information may be both the first implementation manner of the first information and the second implementation manner of the first information. That is, the first information may simultaneously include the first indication information in the DCI and the information of the time domain unit.

[0094] In the second determination method, the process by which the terminal determines the second ED threshold actually used during LBT before uplink transmission according to the first information may include the following steps.

[0095] If the first indication information does not instruct to apply the first ED threshold as the second ED threshold, determine the second ED threshold actually used during LBT before uplink transmission according to the first indication information and the information of the time domain unit. The time domain unit is the time domain unit after the uplink transmission resource for uplink transmission, and the time domain unit may be used to represent one or one section of the time domain area. In some embodiments of the present disclosure, the time domain unit may be the first symbol. Naturally, the time domain unit may also be in other forms other than symbols. In the present disclosure, this is not limited.

[0096] In the third determination method, the ED threshold selected or determined by the terminal itself is determined as the second ED threshold actually used during LBT before uplink transmission.

[0097] The terminal may select whether to use the first ED threshold as the second ED threshold actually used during LBT. If the terminal does not use the first ED threshold as the second ED threshold, the terminal may determine the reference ED threshold specified in advance in the communication protocol as the second ED threshold, or may calculate and obtain the second ED threshold according to factors such as the target calculation equation and the conditions of the channels that need to be monitored. The target calculation equation may be instructed by the network device or determined by the communication protocol. The above only shows some implementation manners in which the terminal does not use the first ED threshold configured by the network device as the second ED threshold according to the embodiments of the present disclosure. Naturally, the embodiments of the present disclosure may also include any other optional implementation manners, which are omitted here for the sake of brevity.

[0098] After the terminal selects the ED threshold by itself, the method for determining the energy detection threshold according to the embodiments of the present disclosure may include the following steps. Transmit the second information to the network device. The second information is used to indicate the second ED threshold actually used during LBT before uplink transmission.

[0099] The second ED threshold may be equal to or different from the first ED threshold. Optionally, the second information includes at least one of uplink control information, uplink data information, the uplink transmission resource actually transmitted during uplink transmission (or the type of the uplink transmission resource actually transmitted during uplink transmission), and the uplink demodulation reference signal (DMRS) of the uplink transmission (or the type of the uplink DMRS of the uplink transmission). Optionally, the second information may include second indication information. The second indication information is used to indicate the second ED threshold actually used during LBT before uplink transmission. The network device determines the second ED threshold used by the terminal according to the second indication information in the received second information.

[0100] Taking the second information including uplink control information as an example, the network device configures the first ED threshold of the terminal. After the configuration is completed, the network device pre-configures the uplink transmission of the terminal. The terminal selects whether the second ED threshold is equal to the first ED threshold, and notifies the network device of its self-selection result by the uplink control information in the uplink control channel. For example, the uplink control information is the configured grant-uplink control information (CG-UCI). For example, as shown in FIG. 7, the CG-UCI is set to the pre-configured uplink transmission resource for uplink transmission and may be transmitted together with the physical uplink shared channel (PUSCH). FIG. 7 is a schematic diagram of the uplink control information and the uplink transmission resource transmitted together. After receiving the CG-UCI, the network device determines the second ED threshold used by the terminal according to the second indication information in the UCI.

[0101] Similar to the first indication information, the second indication information may be explicit indication information or implicit indication information. For the description of the explicit indication information and the implicit indication information, reference may be made to the first indication information. The description of the embodiments of the present disclosure is omitted.

[0102] For example, when the second indication information is explicit indication information, the second indication information may be a bit domain having a length of 1 bit. If the bit indicates "1", it means that the second ED threshold is equal to the first ED threshold. Conversely, if the bit in the bit domain indicates "0", it means that the second ED threshold is not equal to the first ED threshold.

[0103] For example, when the second indication information is implicit indication information, the second indication information for indicating the second ED threshold may agree with the indication information in other bit domains. For example, if the second indication information and the CG-UCI are used to indicate whether a terminal that permits sharing of COT reaches an agreement by sharing COT information, the second ED threshold is equal to the first ED threshold.

[0104] It should be noted that the first ED threshold may also be the ED threshold used during LBT before the terminal initially establishes COT when the terminal shares COT with the base station.

[0105] In summary, in the method for determining the ED threshold according to the embodiment of the present disclosure, the ED threshold actually used during LBT before uplink transmission can be determined. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0106] Furthermore, when the first ED threshold set by the network device is the threshold for sharing COT, the network device can know whether the second ED threshold actually used by the terminal is the threshold for sharing COT. When the second ED threshold used by the terminal is the threshold for sharing COT, the network device may transmit a control channel, a broadcast channel, and a broadcast signal in the shared COT. In the shared COT, the network device transmits a control channel, a data channel, and a reference signal to the terminal. The efficiency of the network device transmitting data to the terminal is effectively improved.

[0107] FIG. 8 shows a method for determining an ED threshold according to an embodiment of the present disclosure. The method may be applied to a network device in the communication system 100 shown in FIG. 1. The network device may be an access point device, that is, a base station. Optionally, the method may include the following steps 801 to 802.

[0108] In step 801, a first ED threshold of the terminal is configured.

[0109] In step 802, a second ED threshold is determined. The second ED threshold is used for the terminal to perform LBT (Listen Before Talk) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0110] In summary, in the method for determining the ED threshold according to the embodiment of the present disclosure, the ED threshold actually used by the terminal during LBT before uplink transmission can be determined. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0111] Optionally, in the embodiment of the present disclosure, step 802 may include the following three determination methods.

[0112] In the first determination method, the first ED threshold is determined as the second ED threshold.

[0113] In the second determination method, the second ED threshold is determined according to the first information.

[0114] Optionally, the first information includes at least one of the following: information used for scheduling uplink transmission, information used for triggering a pre-configured uplink transmission, or first indication information in downlink control information (DCI) which is a common group indication control signal, and information of a time domain unit not used for uplink transmission.

[0115] Optionally, the second determination method may include the following steps. When the first indication information instructs to apply the first ED threshold as the second ED threshold, it is determined that the first ED threshold is the second ED threshold. The first indication information is explicit indication information or implicit indication information.

[0116] Optionally, the first indication information is the first bit within the designated bit domain of the DCI. The designated bit domain is the reserved bit domain or the multiplexed bit domain of the DCI.

[0117] Optionally, when the information of the time domain unit satisfies the first condition, it is determined that the information of the time domain unit is used to indicate that the second ED threshold is the first ED threshold.

[0118] Optionally, the information of the time domain unit includes at least one of the first symbol after the last symbol among the symbols included in the uplink transmission resource, at least one continuous symbol including the first symbol after the last symbol after the last symbol among the symbols included in the uplink transmission resource, and at least one symbol from the last symbol among the symbols included in the uplink transmission resource to the first symbol among the symbols included in the preconfigured downlink transmission resource closest to the uplink transmission resource.

[0119] Optionally, the first condition includes at least one of the fact that the information of the time domain unit is not an uplink symbol and the fact that the first symbol overlaps or partially overlaps with the symbol included in the downlink transmission resource for preconfigured downlink transmission.

[0120] Optionally, the first preconfigured downlink transmission includes at least one of a synchronization signal block (SSB) transmission, a channel state information reference signal (CSI-RS) transmission, a physical downlink control channel (PDCCH) transmission, and a physical downlink shared channel (PDSCH) transmission.

[0121] Optionally, the first information includes first indication information in DCI and information of a time domain unit. The step of determining a second ED threshold according to the first information includes the following steps.

[0122] If the first indication information does not instruct to apply the first ED threshold as the second ED threshold, the second ED threshold is determined according to the first indication information and the information of the time domain unit.

[0123] In a third determination method, the second ED threshold is determined according to second information.

[0124] In a third determination method, before step 802, the determination of the ED threshold may further include the following steps. The network device receives second information. The second information is used to indicate whether the second ED threshold actually used during LBT before uplink transmission is equal to or not equal to the first ED threshold.

[0125] Optionally, the second information includes at least one of uplink control information, uplink data information, uplink transmission resources actually transmitted during uplink transmission, and uplink DMRS of uplink transmission.

[0126] Optionally, in the above embodiment, the configured first ED threshold is the ED threshold of the terminal's shared channel occupancy time (COT), or the configured first ED threshold is the maximum ED threshold.

[0127] In summary, in the method for determining the ED threshold according to the embodiment of the present disclosure, before uplink transmission, the ED threshold actually used during LBT can be determined. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0128] Furthermore, when the first ED threshold set by the network device is the threshold of the shared COT, the network device can know whether the second ED threshold actually used by the terminal is the threshold of the shared COT. When the second ED threshold used by the terminal is the threshold of the shared COT, the network device may transmit the control channel, the broadcast channel, and the broadcast signal in the shared COT. In the shared COT, the network device transmits the control channel, the data channel, and the reference signal to the terminal. The efficiency of the network device transmitting data to the terminal is effectively improved.

[0129] For the related description of the method for determining the ED threshold provided for the network device, reference may be made to the related discussion of the method for determining the ED threshold provided for the terminal. The description of the embodiment of the present disclosure is omitted.

[0130] Regarding the three methods for determining the second ED threshold of the terminal, the following three flowcharts of the interaction between the terminal and the network device are provided.

[0131] FIG. 9 relates to the first determination method. The method for determining the ED threshold to which the first determination method is applied may include the following steps 901 to 903.

[0132] In step 901, the network device configures the first ED threshold of the terminal.

[0133] The first ED threshold may be the ED threshold of the shared COT of the terminal or the maximum ED threshold.

[0134] In step 902, the terminal receives a first ED threshold configured by the network device.

[0135] In step 903, the terminal , actually used by the terminal during LBT determines it as the second ED threshold.

[0136] In the method for determining the ED threshold shown in FIG. 9, the network device forces the terminal to determine the first ED threshold of the terminal configured by the network device as the second ED threshold actually used by the terminal during LBT.

[0137] FIG. 10 relates to the second determination method. The method for determining the ED threshold to which the second determination method is applied may include the following steps 1001 to 1004.

[0138] In step 1001, the network device configures the first ED threshold of the terminal.

[0139] The first ED threshold may be the ED threshold of the shared COT of the terminal or the maximum ED threshold.

[0140] In step 1002, the terminal receives the first ED threshold configured by the network device.

[0141] In step 1003, the terminal , actually used by the terminal during LBT determines the second ED threshold according to the first information.

[0142] The terminal determines the second ED threshold actually used during LBT before uplink transmission according to at least one of the first indication information in the DCI included in the first information and the first symbol outside the uplink transmission resource.

[0143] In step 1004, the network device , actually used by the terminal during LBT determines the second ED threshold according to the first information.

[0144] The network device determines, before uplink transmission, a second ED threshold actually used during LBT according to at least one of the first indication information in the DCI included in the first information and the first symbol outside the uplink transmission resource.

[0145] Note that the embodiments of the present disclosure do not limit the execution order of step 1003 and step 1004. That is, step 1003 and step 1004 may be executed simultaneously, or step 1003 may be executed first before executing step 1004.

[0146] In the method for determining the ED threshold shown in FIG. 10, when the first information includes the first indication information in the DCI, the DCI is transmitted by the network device to the terminal. Therefore, before uplink transmission, the second ED threshold actually used by the terminal during LBT can be determined. Further, the network device can determine whether the second ED threshold actually used by the terminal is the first ED threshold according to the first indication information in the DCI transmitted to the terminal. When the first information includes the first symbol outside the uplink transmission resource, the network device configures configuration information signaling for determining the slot format for the terminal by means of a system message or radio resource control (abbreviated as RRC). Therefore, the network device can know the symbol type of the symbols included in the uplink transmission resource and each symbol outside the uplink transmission resource. Naturally, the symbol type of the first symbol outside the uplink transmission resource is included. That is, both the terminal and the network device can determine whether the second ED threshold actually used by the terminal is the first ED threshold according to the first information.

[0147] FIG. 11 relates to a third determination method. The method for determining the ED threshold to which the third determination method is applied may include the following steps 1101 to 1105.

[0148] In step 1101, the network device configures the first ED threshold of the terminal.

[0149] The first ED threshold may be the ED threshold of the shared COT of the terminal or the maximum ED threshold.

[0150] In step 1102, the terminal receives the first ED threshold configured by the network device.

[0151] In step 1103, the terminal selects an ED threshold by itself and determines the selected ED threshold as , actually used by the terminal during LBT the second ED threshold.

[0152] The terminal may select whether to use the first ED threshold as the second ED threshold actually used during LBT.

[0153] In step 1104, the terminal transmits the second information to the network device.

[0154] The terminal transmits the second information to the network device based on its own selection result. The second information may include at least one of uplink control information, uplink data information, uplink transmission resources actually transmitted during uplink transmission, and uplink DMRS of uplink transmission.

[0155] In step 1105, the network device determines the second ED threshold according to the second information , actually used by the terminal during LBT In step 1105, the network device determines the second ED threshold according to the second information.

[0156] The network device may determine the second ED threshold actually used during LBT before uplink transmission according to the indication information in the second information. The indication information may be implicit indication information or explicit indication information.

[0157] In the method for determining the ED threshold shown in FIG. 11, the terminal selects a second ED threshold actually used during LBT and notifies the network device by the second information. Therefore, both the terminal and the network device can determine whether the second ED threshold actually used by the terminal according to the first information is the first ED threshold.

[0158] Regarding other descriptions of the above steps, the above embodiments may be referred to. The description of the embodiments of the present disclosure is omitted.

[0159] FIG. 12 shows a determination device 1200 for an ED threshold according to an embodiment of the present disclosure. The device includes the following 1201 to 1202.

[0160] The receiving module 1201 is used to receive a first ED threshold configured by a network device.

[0161] The processing module 1202 is used to determine a second ED threshold. The second ED threshold is used to perform listen before talk (LBT) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0162] In summary, the determination device for the ED threshold according to the embodiment of the present disclosure can determine the ED threshold actually used during LBT before uplink transmission. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0163] Optionally, the processing module 1202 is used to determine the first ED threshold as the second ED threshold.

[0164] Optionally, the processing module 1202 is used to determine the second ED threshold according to the first information.

[0165] Optionally, the first information is used to schedule uplink transmission, or used to trigger preconfigured uplink transmission, or the first indication information in the downlink control information (DCI) which is a common group indication control signal, and information of time domain units not used for uplink transmission, and includes at least one of them.

[0166] Optionally, when the first indication information instructs that the first ED threshold is applied as the second ED threshold, the processing module 1202 is used to determine that the first ED threshold is the second ED threshold. The first indication information is explicit indication information or implicit indication information.

[0167] Optionally, the first indication information is the first bit within the designated bit domain of the DCI. The designated bit domain is the reserved bit domain or the multiplexed bit domain of the DCI.

[0168] Optionally, when the information of the time domain unit satisfies the first condition, the processing module 1202 is used to determine that the information of the time domain unit is used to indicate that the second ED threshold is the first ED threshold.

[0169] Optionally, the first condition includes that the information of the time domain unit is not an uplink symbol, and that the information of the time domain unit overlaps or partially overlaps with the symbol included in the downlink transmission resource for preconfigured downlink transmission, and includes at least one of them.

[0170] Optionally, the first symbol is the first symbol after the last symbol included in the uplink transmission resource, and At least one continuous symbol including the first symbol after the last symbol among the symbols included in the uplink transmission resource, after the last symbol; At least one symbol from the last symbol among the symbols included in the uplink transmission resource to the first symbol among the symbols included in the preconfigured downlink transmission resource closest to the uplink transmission resource. It includes at least one of them.

[0171] Optionally, the preconfigured downlink transmission Synchronization signal block (SSB) transmission; Channel state information reference signal (CSI-RS) transmission; Physical downlink control channel (PDCCH) transmission; Physical downlink shared channel (PDSCH) transmission, and includes at least one of them.

[0172] The first information includes the first indication information in the DCI and the information of the time domain unit.

[0173] The processing module 1202 is used to determine the second ED threshold according to the first indication information and the time domain unit information if the first indication information does not instruct to apply the first ED threshold as the second ED threshold.

[0174] Optionally, as shown in FIG. 13, the apparatus 1200 further includes the following.

[0175] The transmission module 1203 is used to transmit the determined second ED threshold to the network device according to the second information. The second information is used to indicate the second ED threshold.

[0176] Optionally, the second information includes at least one of uplink control information, uplink data information, uplink transmission resources actually transmitted during uplink transmission, and uplink demodulation reference signal (DMRS) of uplink transmission.

[0177] Optionally, the first ED threshold is the ED threshold of the shared channel occupancy time (COT), or the first ED threshold is the maximum ED threshold.

[0178] In summary, in the ED threshold determination device according to the embodiment of the present disclosure, before uplink transmission, the ED threshold actually used during LBT can be determined. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0179] Furthermore, when the first ED threshold set by the network device is the threshold of the shared COT, the network device can know whether the second ED threshold actually used by the terminal is the threshold of the shared COT. When the second ED threshold used by the terminal is the threshold of the shared COT, the network device may transmit the control channel, the broadcast channel, and the broadcast signal in the shared COT. In the shared COT, the network device transmits the control channel, the data channel, and the reference signal to the terminal. The efficiency of the network device transmitting data to the terminal is effectively improved.

[0180] FIG. 14 shows another ED threshold determination device 1400 according to an embodiment of the present disclosure. The device 1400 includes the following.

[0181] The processing module 1401 is used to configure the first ED threshold of the terminal.

[0182] The processing module 1401 is used to determine the second ED threshold. The second ED threshold is used by the terminal to perform listen before talk (LBT) before uplink transmission. The second ED threshold is equal to or not equal to the first ED threshold.

[0183] In summary, the ED threshold determination device according to the embodiments of the present disclosure can determine the ED threshold actually used during LBT before uplink transmission. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0184] Optionally, the processing module 1401 is used to determine the first ED threshold as the second ED threshold.

[0185] Optionally, the processing module 1401 is used to determine the second ED threshold according to the first information.

[0186] Optionally, the first information is used for scheduling uplink transmission, or is used for triggering pre-configured uplink transmission, or the first indication information in the downlink control information (DCI) which is a common group indication control signal, and the information of the time domain unit not used for uplink transmission, and includes at least one of them.

[0187] Optionally, when the first indication information instructs that the first ED threshold is applied as the second ED threshold, the processing module 1401 is used to determine that the first ED threshold is the second ED threshold. The first indication information is explicit indication information or implicit indication information.

[0188] Optionally, the first indication information is the first bit in the designated bit domain in the DCI. The designated bit domain is the reserved bit domain or the multiplexed bit domain in the DCI.

[0189] Optionally, when the information of the time domain unit satisfies the first condition, the processing module 1401 is used to determine that the information of the time domain unit is used to indicate that the second ED threshold is the first ED threshold.

[0190] Optionally, the first condition includes at least one of the fact that the information of the time domain unit is not an uplink symbol and the fact that the information of the time domain unit overlaps or partially overlaps with a symbol included in the downlink transmission resource for preconfigured downlink transmission.

[0191] Optionally, the information of the time domain unit is the first symbol after the last symbol among the symbols included in the uplink transmission resource, at least one consecutive symbol including the first symbol after the last symbol, which is after the last symbol among the symbols included in the uplink transmission resource, at least one symbol from the last symbol among the symbols included in the uplink transmission resource to the first symbol among the symbols included in the preconfigured downlink transmission resource closest to the uplink transmission resource. Optionally, the first preconfigured downlink transmission includes at least one of a synchronization signal block (SSB) transmission, a channel state information reference signal (CSI-RS) transmission, a physical downlink control channel (PDCCH) transmission, and a physical downlink shared channel (PDSCH) transmission.

[0192] Optionally, the first information simultaneously includes the first indication information in the DCI and the information of the time domain unit.

[0193] Optionally, the first information simultaneously includes the first indication information in the DCI and the information of the time domain unit.

[0194] The processing module 1401 is used to determine a second ED threshold according to the first instruction information and the information of the time domain unit if the first instruction information does not instruct to apply the first ED threshold as the second ED threshold.

[0195] Optionally, as shown in FIG. 15, the apparatus 1400 includes the following.

[0196] The receiving module 1402 is used to receive second information before determining the second ED threshold. The second information is used to indicate whether the second ED threshold actually used during LBT is equal to or not equal to the first ED threshold before uplink transmission.

[0197] The processing module 1401 is used to determine the second ED threshold according to the second information.

[0198] Optionally, the second information includes at least one of uplink control information, uplink data information, uplink transmission resources actually transmitted during uplink transmission, and uplink demodulation reference signals (DMRS) of uplink transmission.

[0199] Optionally, the configured first ED threshold is the ED threshold of the terminal's shared channel occupancy time (COT), or the configured first ED threshold is the maximum ED threshold.

[0200] In summary, the ED threshold determination device according to the embodiments of the present disclosure can determine the ED threshold actually used during LBT before uplink transmission. Therefore, the network device and the terminal can reach an agreement on the ED threshold actually used by the terminal during LBT. Therefore, the network device can determine the transmission mode for transmitting data to the terminal according to the second ED threshold.

[0201] Furthermore, when the first ED threshold set by the network device is the threshold of the shared COT, the network device can know whether the second ED threshold actually used by the terminal is the threshold of the shared COT. When the second ED threshold used by the terminal is the threshold of the shared COT, the network device may transmit a control channel, a broadcast channel, and a broadcast signal in the shared COT. In the shared COT, the network device transmits a control channel, a data channel, and a reference signal to the terminal. The efficiency of the network device in transmitting data to the terminal is effectively improved.

[0202] FIG. 16 shows a schematic configuration diagram of a communication device, that is, a terminal or a network device, according to an exemplary embodiment of the present disclosure. The communication device includes a processor 1601, a receiver 1602, a transmitter 1603, a memory 1604, and a bus 1605.

[0203] The processor 1601 includes one or more processing cores. The processor 1601 executes various functional applications and information processing by executing software programs and modules.

[0204] The receiver 1602 and the transmitter 1603 may be implemented as one communication component. The communication component may be a communication chip.

[0205] The memory 1604 is connected to the processor 1601 via the bus 1605.

[0206] The memory 1604 may be used to store at least one instruction. The processor 1601 executes at least one instruction and is used to implement each step executed by the network device in the above method embodiment. network It is used to implement each step executed by the network device.

[0207] Furthermore, the memory 1604 may be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device may include, but is not limited to, a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, or a programmable read-only memory (PROM).

[0208] The present disclosure provides a computer-readable storage medium. The computer-readable storage medium stores at least one instruction. The at least one instruction is loaded or executed by a processor to implement a method for determining an ED threshold according to an embodiment of the above method.

[0209] Those skilled in the art should note that in the above one or more examples, the functions described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, the functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes in a computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium. The communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium accessible by a general-purpose or special-purpose computer.

[0210] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Modifications, equivalent replacements, improvements, etc. made within the scope of the spirit and principles of the present disclosure shall all be included in the protection scope of the present disclosure.

Industrial Applicability

[0211] The method and apparatus for determining the ED threshold of the present disclosure can be applied to the field of wireless communication.

Description of Reference Numerals

[0212] 100 communication system 110 network device 120 terminal 201, 202, 901~903, 1001~1004, 1101~1105 steps 1200 ED threshold determination device 1201 receiving module 1202 processing module 1203 transmitting module 1400 ED threshold determination device 1401 processing module 1402 receiving module 1601 processor 1602 receiver 1603 transmitter 1604 memory 1605 bus

Claims

1. Receiving a first ED threshold configured by a network device; determining a second ED threshold that is used to perform LBT (Listen Before Talk) before uplink transmission and is equal to or not equal to the first ED threshold; and transmitting the determined second ED threshold to the network device by second information for instructing the second ED threshold, The step of determining the second ED threshold includes determining the second ED threshold according to first information, the first information includes first indication information in downlink control information (DCI), and the first indication information is configured to instruct to adopt the first ED threshold as the second ED threshold, The second information is configured grant uplink control information (CG-UCI), and the CG-UCI includes uplink control information including information used to indicate whether to share a channel occupancy time (COT), at least one of second indication information that is used to indicate the second ED threshold and is implicit indication information, The implicit indication information refers to that the bit domain of the CG-UCI used to indicate whether to share COT information further indicates the second ED threshold, and the second indication information indicates that when the CG-UCI indicates to share the COT, the second ED threshold is equal to the first ED threshold, A method for determining an energy detection (ED) threshold, characterized in that.

2. The method according to claim 1, wherein the first ED threshold is an ED threshold of the shared channel occupancy time (COT).

3. The method according to claim 1, wherein the DCI is used to schedule uplink transmission.

4. The DCI is used to trigger pre-configured uplink transmission, The method according to claim 1, wherein the first indication information is implicit indication information.

5. The method according to claim 1, wherein the first indication information multiplexes the channel coding redundancy version (RV) domain of the DCI.

6. A step of configuring a first ED threshold of the terminal, a step of determining a second ED threshold that is used by the terminal to perform LBT (Listen Before Talk) before uplink transmission and is equal to or not equal to the first ED threshold, and a step of receiving second information for instructing the second ED threshold before determining the second ED threshold, The step of determining the second ED threshold includes determining the second ED threshold according to first information, the first information includes first indication information in downlink control information (DCI), and the first indication information is configured to instruct to adopt the first ED threshold as the second ED threshold, The second information is Configured grant uplink control information (CG-UCI), and the CG-UCI includes uplink control information including information used to indicate whether to share a channel occupancy time (COT), At least one of second indication information that is used to indicate the second ED threshold and is implicit indication information, The implicit indication information is used to indicate whether to further share COT information indicating the second ED threshold, and refers to the bit domain of the CG-UCI. The implicit indication information means that the bit domain of the CG-UCI used to indicate whether to share COT information further indicates the second ED threshold. When the second indication information indicates that the CG-UCI shares the COT, it indicates that the second ED threshold is equal to the first ED threshold, A method for determining an energy detection (ED) threshold, characterized in that.

7. The method according to claim 6, wherein the first ED threshold is the second ED threshold of the shared channel occupancy time (COT).

8. The method according to claim 6, wherein the DCI is used to schedule uplink transmission.

9. The method according to claim 6, wherein the DCI is used to trigger a preset uplink transmission, and the first indication information is the implicit indication information.

10. The method according to claim 9, wherein the first indication information multiplexes the channel coding redundancy version (RV) domain of the DCI.

11. A receiving module for receiving a first ED threshold value constituted by a network device; A processing module used to perform LBT (Listen Before Talk) before uplink transmission and determine a second ED threshold value that is equal to or not equal to the first ED threshold value; A transmission module used to transmit the determined second ED threshold value to a network device according to second information, where the second information is used to indicate the second ED threshold value; The processing module is further used to determine the second ED threshold value based on first information, where the first information is first indication information of downlink control information (DCI), and the first indication information is configured to indicate that the first ED threshold value is adopted as the second ED threshold value; The second information is Configured grant uplink control information (CG-UCI), and the CG-UCI includes uplink control information including information used to indicate whether to share a channel occupancy time (COT); At least one of second indication information used to indicate the second ED threshold value and being implicit indication information; The implicit indication information refers to that a bit domain of the CG-UCI used to indicate whether to share COT information further indicates the second ED threshold value, and when the second indication information indicates that the CG-UCI shares the COT, it indicates that the second ED threshold value is equal to the first ED threshold value; An apparatus for determining an energy detection (ED) threshold value, characterized in that.

12. Including a processing module for configuring a first ED threshold value of a terminal, where the processing module is used to perform LBT (Listen Before Talk) before uplink transmission of the terminal and determine a second ED threshold value that is equal to or not equal to the first ED threshold value; The processing module is further used to determine the second ED threshold value based on first information, where the first information is first indication information of downlink control information (DCI), and the first indication information is configured to indicate that the first ED threshold value is adopted as the second ED threshold value; It is used to receive the second information, and the second information further includes a receiving module used to indicate a second ED threshold. The second information is configured grant uplink control information (CG-UCI), and the CG-UCI includes uplink control information that constitutes information used to indicate whether to share a channel occupancy time (COT), and at least one of second indication information that is used to indicate the second ED threshold and is implicit indication information. The implicit indication information refers to that a bit domain of the CG-UCI used to indicate whether to share COT information further indicates the second ED threshold, and the second indication information indicates that when the CG-UCI indicates sharing the COT, the second ED threshold is equal to the first ED threshold. An apparatus for determining an energy detection (ED) threshold, characterized by the above.

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