Method and apparatus for transmitting and receiving uplink signal

Abstract

Embodiments of the present application provide a method and apparatus for transmitting and receiving uplink signals; the transmitting method comprises: a terminal device receiving a first signal transmitted by a network device, the first signal being used at least for the terminal device to determine whether to perform channel detection and / or how to perform channel detection before transmitting a second signal; and the terminal device transmitting the second signal to the network device using an uplink resource.

Description

Technical Field

[0001] The embodiments of this application relate to the field of communication technology. Background Technology

[0002] Currently, 3GPP has basically completed the standardization work for New Radio (NR) Rel-15 and Rel-16. NR systems can support operation in the following frequency ranges (including FR1 and FR2).

[0003]

[0004] NR introduces the concept of Bandwidth Part (BWP) and supports multiple Sub-Carrier Spacing (SCS). On a downlink / uplink (DL / UL) carrier, network equipment (e.g., a base station) can pre-configure one or more downlink / uplink (DL / UL) BWPs for terminal devices and configure SCS for each BWP separately. Different SCSs can be configured for different BWPs, and the SCS can be 15kHz, 30kHz, 60kHz, or 120kHz.

[0005] Terminal devices can operate using an active BWP and can switch BWPs based on signaling, such as Radio Resource Control (RRC) messages, Downlink Control Information (DCI) messages, or based on timer states.

[0006] Specifically, for a UL, the SCS of the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sounding Reference Signal (SRS) on a UL BWP is the same as the SCS of that UL BWP, while the SCS of the Physical Random Access Channel (PRACH) can be the same as or different from the SCS of that UL BWP; the SCS of the PRACH is configured separately by network equipment (e.g., base station).

[0007] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0008] The inventors discovered that 3GPP will investigate how to support NR operating at higher frequencies (i.e., frequencies above 52.6 GHz, such as frequencies in the 52.6-71 GHz range). However, there are currently no corresponding methods (including uplink signal transmission and reception methods) to support NR operating at higher frequencies.

[0009] The aforementioned higher frequencies could be unlicensed spectrum (or shared spectrum) or licensed spectrum. On the other hand, regulatory requirements for unlicensed spectrum use may differ across countries and regions. For example, some countries or regions mandate channel detection, such as LBT (Listen Before Talk) or CCA (Clear Channel Assessment), while others do not. Furthermore, in some scenarios, such as when it can be ensured that no other technologies, systems, or devices coexist, using LBT may lead to unnecessary power consumption and reduced resource utilization and system throughput.

[0010] In other words, in order to support NR to operate at the higher frequencies mentioned above, the uplink signal transmission and reception methods need to be flexible and adaptable to different scenarios. Furthermore, in order to save the power of terminal devices and improve resource utilization and throughput, it is necessary to avoid unnecessary channel detection by terminal devices as much as possible.

[0011] To address at least one of the above-mentioned problems, embodiments of this application provide a method and apparatus for transmitting and receiving uplink signals.

[0012] According to one aspect of the embodiments of this application, a method for transmitting an uplink signal is provided, comprising:

[0013] The terminal device receives a first signal sent by the network device, the first signal being used at least to determine whether and / or how to perform channel detection before sending a second signal; and

[0014] The terminal device uses uplink resources to send the second signal to the network device.

[0015] According to another aspect of the embodiments of this application, an uplink signal transmitting apparatus is provided, comprising:

[0016] A receiving unit receives a first signal sent by a network device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0017] The transmitting unit uses uplink resources to transmit the second signal to the network device.

[0018] According to another aspect of the embodiments of this application, a method for receiving an uplink signal is provided, comprising:

[0019] The network device sends a first signal to the terminal device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0020] The network device receives the second signal sent by the terminal device using uplink resources.

[0021] According to another aspect of the embodiments of this application, an uplink signal receiving device is provided, comprising:

[0022] A transmitting unit that transmits a first signal to a terminal device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before transmitting a second signal; and

[0023] The receiving unit receives the second signal sent by the terminal device using uplink resources.

[0024] One of the beneficial effects of the embodiments of this application is that: the terminal device receives a first signal sent by the network device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and the terminal device uses uplink resources to send a second signal to the network device. Therefore, it is possible to support uplink transmission of NR at higher frequencies, and the network device can flexibly control whether and how the terminal device performs channel detection, thus making it suitable for a variety of scenarios and minimizing unnecessary channel detection, thereby saving power and improving resource utilization and throughput of the terminal device.

[0025] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0026] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0027] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0028] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0029] Figure 1 This is a schematic diagram of a communication system according to an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of an uplink signal transmission method according to an embodiment of this application;

[0031] Figure 3 This is an example diagram illustrating how a terminal device in this application determines whether and / or how to perform channel detection before transmitting a second signal based on the frequency domain position of the SSB.

[0032] Figure 4 This is an example diagram illustrating how a terminal device in this application determines whether and / or how to perform channel detection before transmitting a second signal based on the relative positions of the SSB and RMSI.

[0033] Figure 5 This is an example diagram of type 1 in mode 1 of the embodiments of this application;

[0034] Figure 6 This is another example diagram of type 1 in mode 1 of the embodiments of this application;

[0035] Figure 7 This is another example diagram of type 1 in mode 1 of the embodiments of this application;

[0036] Figure 8 This is an example diagram of type 2 in mode 1 of the embodiments of this application;

[0037] Figure 9 This is another example diagram of type 2 in mode 1 of the embodiments of this application;

[0038] Figure 10 This is another example diagram of type 2 in mode 1 of the embodiments of this application;

[0039] Figure 11 This is another example diagram of type 2 in mode 1 of the embodiments of this application;

[0040] Figure 12 This is an example diagram of type 1 in mode 2 of the embodiments of this application;

[0041] Figure 13 This is an example diagram of type 2 in mode 2 of the embodiments of this application;

[0042] Figure 14 This is another example diagram of type 2 in mode 2 of the embodiments of this application;

[0043] Figure 15 This is another example diagram of type 2 in mode 2 of the embodiments of this application;

[0044] Figure 16 This is an example diagram of a terminal device transmitting an uplink signal according to an embodiment of this application;

[0045] Figure 17 This is a schematic diagram of an uplink signal receiving method according to an embodiment of this application;

[0046] Figure 18 This is a schematic diagram of an uplink signal transmitting device according to an embodiment of this application;

[0047] Figure 19 This is a schematic diagram of an uplink signal receiving device according to an embodiment of this application;

[0048] Figure 20 This is a schematic diagram of a network device according to an embodiment of this application;

[0049] Figure 21 This is a schematic diagram of a terminal device according to an embodiment of this application. Detailed Implementation

[0050] Referring to the accompanying drawings, the foregoing and other features of this application will become apparent from the following description. Specific embodiments of this application are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this application may be employed. It should be understood that this application is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0051] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0052] In the embodiments of this application, the singular forms "a," "the," etc., including the plural forms, should be broadly understood as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms, unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0053] In the embodiments of this application, the term "communication network" or "wireless communication network" may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0054] Furthermore, communication between devices in a communication system can be carried out according to communication protocols at any stage, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and / or other currently known or future communication protocols.

[0055] In the embodiments of this application, the term "network device" refers, for example, to a device in a communication system that connects a terminal device to a communication network and provides services to that terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0056] The term "base station" can include, but is not limited to, NodeBs (or NBs), evolved NodeBs (or eNodeBs or eNBs), and 5G base stations (gNBs), etc. It can also include Remote Radio Heads (RRHs), Remote Radio Units (RRUs), relays, or low-power nodes (such as femeto, pico, etc.). The term "base station" can encompass some or all of their functions, and each base station can provide communication coverage to a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used. Without causing confusion, the terms "cell" and "base station" are used interchangeably.

[0057] In the embodiments of this application, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer, for example, to a device that accesses a communication network and receives network services through a network device. A terminal device can be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0058] The terminal device may include, but is not limited to, the following devices: cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, machine-type communication device, laptop computer, cordless phone, smartphone, smartwatch, digital camera, etc.

[0059] For example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, such as including but not limited to: machine-type communication (MTC) terminals, vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and so on.

[0060] Furthermore, the terms "network side" or "network equipment side" refer to one side of the network, which can be a base station or include one or more network devices as described above. The terms "user side," "terminal side," or "terminal equipment side" refer to the side of the user or terminal, which can be a UE or include one or more terminal devices as described above. Unless otherwise specified, "equipment" can refer to either network equipment or terminal equipment.

[0061] The following examples illustrate the scenarios of embodiments of this application, but this application is not limited thereto.

[0062] Figure 1 This is a schematic diagram of a communication system according to an embodiment of this application, illustrating the case of a terminal device and a network device as examples. Figure 1 As shown, the communication system 100 may include network device 101 and terminal devices 102 and 103. For simplicity, Figure 1 The illustration uses only two terminal devices and one network device as an example, but the embodiments of this application are not limited to this.

[0063] In this embodiment of the application, network device 101 and terminal devices 102 and 103 can transmit existing services or services that can be implemented in the future. For example, these services may include, but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0064] It is worth noting that, Figure 1The illustration shows that both terminal devices 102 and 103 are within the coverage area of ​​network device 101, but this application is not limited to this. Both terminal devices 102 and 103 may be outside the coverage area of ​​network device 101, or one terminal device 102 may be within the coverage area of ​​network device 101 while the other terminal device 103 may be outside the coverage area of ​​network device 101.

[0065] In the following description, without confusion, the terms “uplink control signal” and “uplink control information (UCI)” or “physical uplink control channel (PUCCH)” or “PUSCH transmission” are interchangeable, and the terms “uplink data signal” and “uplink data information” or “physical uplink shared channel (PUSCH)” or “PUSCH transmission” are interchangeable.

[0066] The terms “Random Access Channel (RACH)” and “Physical Random Access Channel (PRACH)” or “preamble” or “PRACH transmission” are interchangeable, as are the terms “SRS” and “SRS transmission”.

[0067] The terms “downlink control signal” and “downlink control information (DCI)” or “physical downlink control channel (PDCCH)” are interchangeable, as are the terms “downlink data signal” and “downlink data information (PDSCH)” or “physical downlink shared channel (PDSCH)”.

[0068] Furthermore, sending or receiving a PUSCH can be understood as sending or receiving uplink data information carried by the PUSCH; sending or receiving a PUCCH can be understood as sending or receiving uplink control information carried by the PUCCH; and sending or receiving a PRACH can be understood as sending or receiving a preamble carried by the PRACH. Uplink signals can include uplink data signals and / or uplink control signals and / or uplink reference signals (e.g., DMRS, PT-RS, SRS) and / or random access channels, and can also be referred to as uplink transmission (UL transmission), uplink information, or uplink channel. Sending an uplink signal on uplink resources can be understood as using that uplink resource to send the uplink signal.

[0069] In the embodiments of this application, higher-layer signaling may be, for example, Radio Resource Control (RRC) signaling or Medium Access Control (MAC) signaling. RRC signaling may be, for example, an RRC message, and MAC signaling may be, for example, a MAC Control Element (MAC CE). However, this application is not limited to these. The RRC messages sent by the base station may include, for example, broadcast RRC messages and / or dedicated RRC messages.

[0070] Broadcast RRC messages include, for example, RRC messages periodically broadcast by the base station, such as RRC messages included in BCCH-BCH-Message(class), such as the Main Information Block (MIB); or RRC messages included in BCCH-DL-SCH-Message(class), such as SIB1 (or RMSI), SystemInformation, etc.

[0071] Dedicated RRC messages are, for example, RRC messages sent by the base station to a specific UE, such as RRC messages included in DL-CCCH-Message(class), such as RRCSetup, or RRC messages included in DL-DCCH-Message(class), such as RRCReconfiguration, RRCResume, RRCReestablishment, SystemInformation, etc.

[0072] An RRC message may include one or more RRC information elements (IEs) or one or more information fields, and an RRC IE may also include one or more other RRC IEs or information fields.

[0073] In the embodiments of this application, physical layer signaling may be, for example, DCI (Downlink Control Information) or UCI (Uplink Control Information).

[0074] First aspect of the embodiments

[0075] This application provides a method for transmitting uplink signals, which will be described from the perspective of a terminal device. Figure 2 This is a schematic diagram of an uplink signal transmission method according to an embodiment of this application, as shown below. Figure 2 As shown, the method includes:

[0076] 201. The terminal device receives a first signal sent by the network device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0077] 202, the terminal device uses uplink resources to send the second signal to the network device.

[0078] It is worth noting that the above appendix Figure 2 The embodiments described herein are merely illustrative and are not limited thereto. For example, the execution order of various operations can be appropriately adjusted, and additional operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above description, and are not limited to the above-described embodiments. Figure 2 The records.

[0079] In some embodiments, the first signal includes at least one of the following: a Synchronization Signal Block (SSB), a Radio Resource Control (RRC) message, a Medium Access Control (MAC) control element (CE), a Downlink Control Information (DCI), and a Random Access Response (RAR); however, this application is not limited thereto. When the first signal includes two or more of the above information, the components may be transmitted simultaneously or at different times.

[0080] In some embodiments, the terminal device determines whether to perform channel detection before transmitting the second signal, including: the terminal device determines not to perform channel detection before transmitting the second signal, or the terminal device determines to perform channel detection before transmitting the second signal.

[0081] In some embodiments, the terminal device determines how to perform channel detection before transmitting the second signal, including: the terminal device determining the duration of the channel detection before transmitting the second signal; and / or, the terminal device determining the channel access type of the channel detection before transmitting the second signal; and / or the terminal device determining the channel access priority of the channel detection before transmitting the second signal. Wherein, the terminal device determining the duration of the channel detection before transmitting the second signal may include: the terminal device determining or generating a value for a random number used to perform the channel detection.

[0082] In some embodiments, the first signal may be used to instruct the terminal device to perform channel detection before sending the second signal, or the first signal may be used to instruct the terminal device not to perform channel detection before sending the second signal.

[0083] In some embodiments, the first signal may be used to instruct the terminal device how to perform channel detection before transmitting the second signal. For example, it may be used to instruct the terminal device to perform channel detection before transmitting the second signal, including at least one of the following: the duration of channel detection; the value of the random number used for channel detection; the value of a first parameter (e.g., contention window CW) used to generate the random number used for channel detection; the range of values ​​for the first parameter used to generate the random number used for channel detection; the channel access type; the channel access priority; and the channel access mode.

[0084] In some embodiments, the first signal is used to indicate the operating frequency band.

[0085] For example, the terminal device can determine the channel detection time length based on the value of the indicated random number; or, it can generate a random number based on the indicated CW value and then determine the channel detection time length; or, based on the range of indicated CW values, it can use one of the CW values ​​to generate a random number and then determine the channel detection time length.

[0086] For example, the terminal device can determine the channel access type based on the indication of the first signal; or, it can determine the channel access priority based on the indication; or, it can determine the channel access mode based on the indication.

[0087] In some embodiments, the terminal device uses uplink resources to send a second signal to the network device, including: if the terminal device determines that channel detection is not required before sending the second signal, the terminal device sends the second signal without performing channel detection; otherwise, the terminal device performs channel detection before sending the second signal, and only sends the second signal if the channel is detected to be idle. The uplink resources can be on licensed frequency bands or unlicensed frequency bands.

[0088] In some embodiments, the first signal is a synchronization signal block (SSB); the terminal device determines whether and / or how to perform channel detection before transmitting the second signal based on at least one of the following:

[0089] Frequency domain location of the synchronization signal block (SSB);

[0090] The time-domain location of the synchronization signal block (SSB);

[0091] The time-frequency structure of the synchronization signal block (SSB);

[0092] The sequence of primary synchronization signals (PSS) in the synchronization signal block (SSB);

[0093] The sequence of secondary synchronization signals (SSS) in the synchronization signal block (SSB);

[0094] The sequence of demodulation reference signals (DMRS) of the physical broadcast channel (PBCH) in the synchronization signal block (SSB);

[0095] The frequency domain location of the demodulation reference signal (DMRS) of the physical broadcast channel (PBCH) in the synchronization signal block (SSB);

[0096] Scrambling sequence of the Physical Broadcast Channel (PBCH) in the Synchronization Signal Block (SSB);

[0097] The load of the Physical Broadcast Channel (PBCH) of the Synchronization Signal Block (SSB);

[0098] The relative position of the synchronization signal block (SSB) and the remaining minimum system information (RMSI).

[0099] In some embodiments, SSB is cell-defining SSB, but this application is not limited thereto.

[0100] In some embodiments, the terminal device may determine whether and / or how to perform channel detection before transmitting the second signal based on the frequency domain location of the SSB.

[0101] Figure 3This is an example diagram illustrating how a terminal device, according to an embodiment of this application, determines whether and / or how to perform channel detection before transmitting a second signal based on the frequency domain position of the SSB. For example, two sets of synchronization rasteres can be predefined, such as... Figure 3 As shown.

[0102] When a terminal device receives an SSB from a cell, if the received SSB is on the first sync raster (e.g., SSB1), the terminal device does not perform channel detection before transmitting the second signal on the uplink carrier of that cell; if the received SSB is on the second sync raster (e.g., SSB2), the terminal device performs channel detection before transmitting the second signal on the uplink carrier of that cell.

[0103] In some embodiments, how the terminal device performs channel detection before sending the second signal is predefined or preconfigured. For example, at least one of the following parameters or information may be predefined or preconfigured: the duration of channel detection; the value of a first parameter (e.g., contention window CW) used to generate random numbers for channel detection; the range of values ​​for the first parameter used to generate random numbers for channel detection; the channel access type; the channel access priority; and the channel access mode.

[0104] In some embodiments, the terminal device may also determine whether and / or how to perform channel detection before transmitting the second signal based on the time-domain location of the SSB. For example, if the cell-defining SSB is in the first half-frame of a frame, the terminal device does not perform channel detection; if it is in the second half-frame, the terminal device performs channel detection. Similarly, variations can be made as appropriate.

[0105] In some embodiments, the terminal device may also determine whether and / or how to perform channel detection before transmitting the second signal based on the relative position of the SSB and RMSI.

[0106] Figure 4 This is an example diagram illustrating how a terminal device, according to an embodiment of this application, determines whether and / or how to perform channel detection before transmitting a second signal based on the relative positions of the SSB and RMSI. For example, as... Figure 4 As shown, if SSB and CORESET#0 use pattern 1, the terminal device does not perform channel detection; if pattern 2 is used, the terminal device performs channel detection.

[0107] Figure 3 and 4This application provides only an exemplary description of how a terminal device determines whether and / or how to perform channel detection before transmitting a second signal based on the SSB, and the embodiments are not limited thereto. The specific method for determining whether and / or how to perform channel detection before transmitting a second signal based on the aforementioned SSB-related information can be flexibly selected according to actual needs.

[0108] In some embodiments, the first signal is a Radio Resource Control (RRC) message, a MAC CE, or a DCI. For simplicity, some examples will use RRC messages as examples; however, the cases for MAC CE or DCI can be handled accordingly.

[0109] In some embodiments, the first signal includes an RRC message. The RRC message may include first information, which is either an RRC IE or fielded. The terminal device determines whether and / or how to perform channel detection before transmitting the second signal based on the first information included in the Radio Resource Control (RRC) message. For example, the RRC message may explicitly instruct the UE whether and / or how to perform channel detection before transmitting the second signal using the first information.

[0110] For example, the first information is used to instruct the terminal device to perform channel detection before transmitting the second signal, including at least one of the following: the duration of the channel detection; a random number used for channel detection (e.g., described later). Figure 5 In this context, N is the value of the first parameter (which can be generated by the base station based on the first parameter and then indicated to the UE via the first information); the value of the first parameter (e.g., contention window CW) used to generate random numbers for channel detection; the range of values ​​for the first parameter used to generate random numbers for channel detection; the channel access type; the channel access priority; and the channel access mode.

[0111] For example, if the first information indicates a channel access mode, and one of the channel access modes indicated by the first information is no channel detection, then when the first information indicates that the channel access mode is no channel detection, the terminal device will not perform channel detection before sending the second signal. When the first information indicates other channel access modes, the terminal device will perform channel detection before sending the second signal. How the terminal device performs channel detection before sending the second signal is predefined or preconfigured. Taking `channelAccessMode` as an example, it can explicitly indicate that no channel detection will be performed.

[0112] Table 1

[0113]

[0114] In some embodiments, the first information per at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / physical signal, and data carried by the physical channel / physical signal. Physical channels are, for example, PRACH / PUCCH / PUSCH, and physical signals are, for example, SRS.

[0115] For example, if the first information is per cell, meaning the UE can determine whether and / or how to perform channel detection based on the first information, and the determination applies to all uplink signals transmitted by the UE in that cell. More specifically, for example, if a UE learns that a cell is "not performing channel detection," then for all uplink signals from that cell, the UE will not detect the channel before transmission. As another example, if the first information is per BWP, meaning if a UE learns that a UL BWP is "not performing channel detection," then for all uplink signals from that UL BWP, the UE will not detect the channel before transmission.

[0116] In some embodiments, the first information can be cell-specific or UE-specific. For example, cell-specific means that the indication of the first information is the same for all UEs in a cell, and the first information can be broadcast by the base station or sent by the base station to a specific UE; UE-specific means that the indication of the first information can be different for different UEs in a cell (of course, it can also be the same), and the first information can be sent by the base station to a specific UE.

[0117] For example, if the indication of the first information is per system / cell / channel, the first information may be included in the MIB or SIB1, for example. If the indication of the first information is per BWP, the first information may be included in the RRCIE used to configure the BWP, for example. If the indication of the first information is per channel, the first information may be included in the RRC IE used to configure the channel, for example.

[0118] In some embodiments, the RRC IE for configuring a channel refers to the RRC IE for configuring an RB set and / or an intra-cell guard band(s).

[0119] In some embodiments, the first signal is a Radio Resource Control (RRC) message or a MAC CE. The RRC message or MAC CE may include first information. Taking an RRC message as an example, this first information is an RRC IE or field. The UE determines whether and / or how to perform channel detection before transmitting the second signal based on whether the RRC message includes the first information. For example, the RRC message may implicitly indicate whether and / or how the UE performs channel detection before transmitting the second signal by including the first information.

[0120] For example, if the first information is not included in the Radio Resource Control (RRC) message, the terminal device does not perform channel detection before sending the second signal; if the first information is included in the Radio Resource Control (RRC) message, the terminal device performs channel detection before sending the second signal.

[0121] The method for performing channel detection before the terminal device sends the second signal is predefined or preconfigured. For example, the first information is used to indicate channel detection; taking `channelAccess` as an example:

[0122] Table 2

[0123] channelAccess-r17ENUMERATED{enabled}

[0124] For example, if the Radio Resource Control (RRC) message includes the first information, the terminal device does not perform channel detection before transmitting the second signal; if the RRC message does not include the first information, the terminal device performs channel detection before transmitting the second signal. How the terminal device performs channel detection before transmitting the second signal is predefined or pre-configured. For example, the first information might indicate that channel detection is not performed; for instance, if the first information is "noChannelSensing":

[0125] Table 3

[0126] noChannelSensing-r17ENUMERATED{enabled}

[0127] For example, if the first information is not included in the Radio Resource Control (RRC) message, the terminal device does not perform channel detection before sending the second signal; if the first information is included in the Radio Resource Control (RRC) message, the terminal device performs channel detection before sending the second signal, and how the terminal device performs channel detection before sending the second signal is predefined or preconfigured.

[0128] The first information is used to indicate one of the following channel detections performed by the terminal device before sending the second signal: the duration of the channel detection; the value of the random number used for channel detection; the value of the first parameter (egCW) used to generate the random number used for channel detection; the range of values ​​for the first parameter used to generate the random number used for channel detection; the channel access type; the channel access priority; and the channel access mode.

[0129] For example, the first information is used to indicate the channel access mode; taking "channelAccess" as the first information:

[0130] Table 4

[0131]

[0132] In some embodiments, when the operating frequency band is an unlicensed frequency band, the Radio Resource Control (RRC) message may include first information; when the operating frequency band is a licensed frequency band, the Radio Resource Control (RRC) message may not include first information.

[0133] In some embodiments, the first signal may be used to indicate the operating frequency band. If the first signal indicates that the operating frequency band is a licensed band, the terminal device does not perform channel detection before transmitting the second signal; or, if the first signal indicates that the operating frequency band is an unlicensed band, the terminal device performs channel detection before transmitting the second signal, and / or, the terminal device determines the duration of the channel detection performed before transmitting the second signal.

[0134] For example, "not performing channel detection" can be equivalent to "operating in a licensed frequency band". In other words, the base station can also instruct the UE not to detect the channel before sending uplink signals by indicating that the operating frequency band is a licensed frequency band; and vice versa.

[0135] Taking RRC messages as an example, the operating frequency band can be used to indicate that channel detection should not be performed.

[0136] Table 5

[0137]

[0138] For example, "do not perform channel detection" is not equivalent to "the operating frequency band is a licensed frequency band". In other words, when the base station indicates "do not perform channel detection", the operating frequency band may be a licensed frequency band or an unlicensed frequency band.

[0139] In some embodiments, the first signal includes an SSB and the RRC message, wherein the SSB is used by the terminal device to determine that the operating frequency band is an unlicensed frequency band, or the SSB is used by the terminal device to determine that the operating frequency band is a licensed frequency band. That is, the base station may also (e.g., via SSB / RRC messages) additionally indicate whether the operating frequency band is a licensed or unlicensed frequency band.

[0140] In some embodiments, the RRC message includes second information used to indicate the operating frequency band. That is, taking indication via an RRC message as an example, the RRC message may include second information indicating whether the operating frequency band is a licensed or unlicensed band, or the second information indicating the band index of the operating frequency band. Here, whether a band identified by a band index is a licensed or unlicensed spectrum is predefined.

[0141] For example, the following information fields (i.e., second information) can be included in the MIB:

[0142] Table 6

[0143] operationModeENUMERATED{sharingSpectrum,nonSharingSpectrum}

[0144] For example, the following information fields can be included in RRC messages outside of MIB (such as SIB1 and / or dedicated RRC messages):

[0145] Table 7

[0146]

[0147] In some embodiments, if the first signal indicates that channel detection is not performed, the Radio Resource Control (RRC) message may include second information for indicating the operating frequency band; or, if the first signal does not indicate that channel detection is not performed, the Radio Resource Control (RRC) message may not include second information for indicating the operating frequency band.

[0148] For example, whether the first information can be included in the RRC message may depend on whether the operating frequency band is a licensed or unlicensed band. The first information can explicitly indicate "no channel detection". If the operating frequency band is unlicensed, the first information can be included in the RRC message; if the operating frequency band is licensed, the first information cannot be included in the RRC message.

[0149] For example, whether the RRC message can include the second information depends on whether the base station instructs the UE not to detect the channel before sending the uplink signal. If the base station can indicate "no channel detection" through the SSB and / or RRC message, then the RRC message can include the second information; otherwise, the RRC message cannot include the second information.

[0150] The above provides an illustrative explanation of whether and how to perform channel detection. The following explanation will further elaborate on this in conjunction with channel access modes and / or channel access types. For simplicity, details already explained are omitted below.

[0151] In some embodiments, the channel access mode includes a mode in which channel detection is not performed. Furthermore, the channel access mode may also include a dynamic channel access mode and / or a semi-static channel access mode.

[0152] For example, for NR systems operating at higher frequency bands, at least one of the following channel access modes can be supported: Mode 1: LBE (Dynamic Channel Access Mode); Mode 2: FBE (Semi-Static Channel Access Mode); Mode 3: Mode without channel detection.

[0153] For example, a channel access mode can correspond to one or more channel access types. The channel access type corresponding to a channel access mode can be predefined, preconfigured, or configured by the base station (or indicated by the base station). For example, it can be configured by RRC or RRC messages, or indicated by the base station through RRC signaling. The channel access types include types that do not perform channel detection, and may also include types that do perform channel detection. For example, mode 1 may include type 1 (for initializing channel occupancy), type 2 (for sharing channel occupancy), and type 3 (no channel detection).

[0154] Figure 5 This is an example diagram (Example 1) of Type 1 in Mode 1 of this application embodiment, exemplarily illustrating an example where Channel Access Priority Class (CAPC) is not defined. For example, T f =8us, T sl =5us, N=random(0,CW-m), where m and CW are integers greater than or equal to 0, and CW>m. For example, m=0, CW=127.

[0155] Figure 6 This is another example diagram (Example 2) of Type 1 in Mode 1 of this application embodiment, exemplarily illustrating an example of CAPC partitioning. For example, T f =8us, T sl =5us. N=random(0,CW) p ), m p and CW p The possible values ​​are shown in Table 8 below.

[0156] Table 8

[0157] CAPC(p) <![CDATA[m p ]]> <![CDATA[CW min,p ]]> <![CDATA[CW max,p ]]> <![CDATA[T ulmcot,p ]]> <![CDATA[allowed CW p sizes]]> 1 2 3 7 2ms {3,7} 2 2 7 15 4ms {7,15} 3 3 15 1023 6ms or 10ms {15,31,63,127,255,511,1023} 4 7 15 1023 6ms or 10ms {15,31,63,127,255,511,1023}

[0158] Figure 7 This is another example diagram (Example 3) of Type 1 in Mode 1 of the present application embodiment, which exemplarily illustrates the case of transmitting uplink signals without detecting the channel.

[0159] Figure 8 This is an example diagram (Example 1) of type 2 in mode 1 of this application embodiment, for example, it can be used for channel access in type 1 channel during the corresponding channel occupancy time. For example, T f =8us, T sl =5us.

[0160] Figure 9 This is another example diagram (Example 2) of type 2 in mode 1 of the embodiments of this application, for example, T f =8us.

[0161] Figure 10 This is another example diagram (Example 3) of type 2 in mode 1 of the embodiments of this application.

[0162] Figure 11 This is another example diagram (Example 4) of type 2 in mode 1 of the present application, in which uplink signals can be sent without detecting the channel during the channel occupation time (COT).

[0163] Mode 2 can include type 1 (for initializing occupied channels), type 2 (for sharing occupied channels), and type 3 (for not detecting channels).

[0164] Figure 12 This is an example diagram (Example 1) of Type 1 in Mode 2 of this application embodiment. For example, the UE starts transmitting uplink signals from the beginning of the periodic channel occupancy (CO); the channel detection time is, for example, 5µs.

[0165] Figure 13 This is an example diagram (Example 1) of type 2 in mode 2 of the embodiments of this application. For example, the interval between UL and DL transmission bursts does not exceed 3µs, and the UE can send uplink signals without detecting the channel.

[0166] Figure 14 This is another example diagram (Example 2) of Type 2 in Mode 2 of this application embodiment. For example, if the interval between the UL and DL transmission bursts exceeds 3µs, the UE can detect that the channel is idle before sending an uplink signal. The channel detection time is, for example, 5µs or 13µs.

[0167] Figure 15This is another example diagram (Example 3) of Type 2 in Mode 2 of the embodiments of this application. For example, uplink signals can be transmitted without detecting the channel during the channel occupancy time.

[0168] The above provides an exemplary description of channel access modes and / or channel access types, but this application is not limited thereto, and other classifications of channel access modes and / or channel access types may also be used. Furthermore, there may be only a channel access mode, only a channel access type, or a combination of both.

[0169] In the embodiments of this application, the uplink resources used to transmit the second signal can be indicated by higher-layer signaling and / or DCI, or by RAR, and the second signal can be PRACH, PUCCH, PUSCH, or SRS. The following, in conjunction with specific uplink resource indication methods and / or the second signal, further illustrates how the terminal device determines whether to detect the channel and / or how to perform channel detection and transmit the second signal.

[0170] In some embodiments, the uplink resources are configured by RRC messages, or the uplink resources (or the second signal) are scheduled by downlink control information (DCI) or random access response (RAR) and the DCI or RAR does not include an information field for indicating the channel access type; if the first information does not indicate that channel detection is not performed, the terminal device sends the second signal using a predefined or preconfigured channel access type.

[0171] For example, the predefined or preconfigured channel access type may be a type that does not perform channel detection or a type that performs channel detection. The predefined or preconfigured channel access type refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / signal, and data carried by the physical channel / signal.

[0172] In some embodiments, the uplink resources are configured by RRC messages, or the uplink resources (or the second signal) are scheduled by downlink control information (DCI) or random access response (RAR) and the DCI or RAR does not include an information field for indicating the channel access type. If the first information does not indicate that channel detection is not performed, the terminal device performs channel detection before transmitting the second signal. How the terminal device performs channel detection before transmitting the second signal is indicated by the third information.

[0173] For example, the third information is used to indicate at least one of the following: the duration of channel detection; the value of the random number used for channel detection; the value of the first parameter (egCW) used to generate the random number used for channel detection; the range of values ​​for the first parameter used to generate the random number used for channel detection; the channel access type; and the channel access priority.

[0174] More specifically, for example, if the first information is used to indicate a channel access mode, and one of the channel access modes indicated by the first information is no channel detection, then if the first information indicates that the channel access mode is no channel detection, the terminal device does not perform channel detection before sending the second signal. If the first information indicates other channel access modes, the terminal device performs channel detection before sending the second signal. The method of performing channel detection before sending the second signal is indicated by the third information.

[0175] For example, the third information refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / signal, data carried by physical channel / signal.

[0176] In some embodiments, the uplink resources are configured by RRC messages, or the uplink resources (or the second signal) are scheduled (indicated) by downlink control information (DCI) or random access response (RAR) and the DCI or RAR does not include an information field for indicating the channel access type. The first information is used to indicate the channel access type, and the terminal device transmits the second signal using the channel access type indicated by the first information.

[0177] In some embodiments, the uplink resources (or the second signal) are scheduled by DCI or RAR. If the first signal indicates that channel detection is not performed, the terminal device determines that the DCI or RAR used to schedule the uplink resources does not include an information field for indicating the channel access type, and the terminal device does not perform channel detection before sending the second signal.

[0178] In some embodiments, the uplink resources (or the second signal) are scheduled by DCI or RAR. If the first signal does not indicate that channel detection is not performed, the terminal device further determines, based on the fourth information, an information field included in the DCI or RAR used for scheduling the uplink resources for indicating the channel access type. The fourth information is at least used to indicate the channel access type that the DCI or RAR can indicate.

[0179] In some embodiments, the terminal device transmits a second signal using the channel access type indicated by DCI or RAR, or, if the fourth information indicates a channel access type, it transmits a second signal using the channel access type indicated by the fourth information.

[0180] In some embodiments, the second signal is the Physical Uplink Shared Channel (PUSCH), and the following explanation will take PUSCH as an example.

[0181] For example, for a PUSCH configured with RRC (e.g., Type 1 / Type 2 CG), the first and / or third information is included in the configuration information used for configuration authorization (CG). For instance, the UE uses the channel access type indicated by the third information included in the RRC message to send the PUSCH. For example, if the channel access type indicated by the third information is no channel detection, the UE can send the configured PUSCH without channel detection.

[0182] For example, for a PUSCH dynamically scheduled by DCI (e.g., DCI 0_0, 0_1), the UE uses the channel access type indicated by the third information in the DCI to send the PUSCH.

[0183] In some embodiments, before receiving the DCI, the UE can determine the size and / or content of the DCI based on the channel access mode and / or fourth information. The fourth information at least indicates the channel access type that the DCI can indicate. The fourth information may be included, for example, in an RRC message. This indication may be per DCI format.

[0184] Taking DCI 0_0 as an example, if the channel access mode is mode 3, then DCI 0_0 does not include the third information. As another example, if the channel access mode is mode 1, the fourth message indicates that DCI 0_0 can indicate one or more of the channel access types mentioned above in mode 1. Specifically, when only one type is indicated, DCI 0_0 may not include the third information. After receiving DCI 0_0 for scheduling PUSCH, the UE can send the PUSCH scheduled by that DCI using the channel access type indicated by the fourth message.

[0185] In some embodiments, if the base station does not indicate the channel access type for a PUSCH, the UE can determine the channel access type based on the traffic type / priority. The channel access types that can be used based on the traffic type / priority can be predefined or indicated by the base station. For example, the UE can transmit PUSCHs carrying information such as SRB0, SRB1, and SRB3, and MAC CEs (except the padding BSR and recommended bit rate MAC CEs) without detecting the channel.

[0186] In some embodiments, the second signal is PUCCH, and PUCCH will be used as an example for further explanation below. The first or third information is included in the configuration information of PUCCH, the configuration information of SR, or the configuration information of CSI.

[0187] For example, for a PUCCH configured with RRC (e.g., a PUCCH used for CSI reporting in SR or P / SP), the UE sends the PUCCH using the channel access type indicated by the third information included in the RRC message. More specifically, the third information can be included in the configuration information of the CSI reporting in SR or P / SP. For example, if the channel access type indicated by the third information is no channel detection, the UE can send the configured PUCCH without detecting the channel. On the other hand, the third information can also be per UCI type.

[0188] For example, for a PUCCH dynamically scheduled by DCI (e.g., DCI 1_0, 1_1), the UE sends the PUCCH using the channel access type indicated by the third information in SIB1.

[0189] For example, before receiving the DCI, the UE can determine the size and / or content of the DCI based on the channel access mode and / or fourth information. The fourth information at least indicates the channel access type that the DCI can indicate. This fourth information may be included, for example, in an RRC message. This indication may be per DCI format.

[0190] Specifically, taking DCI 1_0 as an example, if the channel access mode is mode 3, then DCI 1_0 does not include the third information. As another example, if the channel access mode is mode 1, the fourth message indicates that the channel access type indicated by DCI 1_0 is, for example, one or more of the aforementioned modes 1. In particular, when only one type is indicated, DCI 1_0 may not include the third information. After receiving DCI 1_0 for scheduling PUCCH, the UE can send the PUCCH scheduled by that DCI using the channel access type indicated by the fourth message.

[0191] For example, if the base station does not indicate a channel access type for a PUCCH, the UE can determine the channel access type based on the UCI type. The channel access types that can be used by the UCI type can be predefined or indicated by the base station. For example, the UE can send a PUSCH carrying information such as HARQ-ACK,SR without detecting the channel.

[0192] In some embodiments, the second signal is a sounding reference signal (SRS), and the following description will also use SRS as an example. The first information or the third information is included in the configuration information of the sounding reference signal (SRS).

[0193] For example, for SRS configured with RRC (P / SP SRS), the UE can send SRS based on the channel access type indicated by the third information included in the RRC message. More specifically, the third message can be included in the SRS configuration information.

[0194] For example, for dynamically scheduled SRS, if the SRS is not sent together with the PUSCH, the UE sends the SRS using a pre-configured channel access type. This pre-configured channel access type is indicated, for example, by the third information included in the RRC message. The third information can be included in the SRS configuration information.

[0195] In some embodiments, the second signal is the Physical Random Access Channel (PRACH), which will be used as an example for further explanation below. The first or third information is included in the configuration information of the Physical Random Access Channel (PRACH).

[0196] For example, for a RA triggered by a higher layer (MAC / RRC / PDCCH order), the UE can send a PRACH based on the channel access type indicated by the third information included in the RRC message. More specifically, the third information can be included in the PRACH configuration information. For example, if the channel access type indicated by the third information is no channel detection, the UE can send a PRACH without detecting the channel. On the other hand, the third information can also be per RA type (e.g., CBRA / CFRA) / usage (UL sync / BFR).

[0197] For example, for PDCCH order triggered RA, the DCI used for triggering RA may include third information, and the UE sends PRACH using the channel access type indicated by the third information in the DCI.

[0198] The embodiments of this application have been illustrated above using PUSCH, PUCCH, SRS and PRACH as examples, but this application is not limited thereto.

[0199] In some embodiments, where common SCI "type X2" is permitted, the UE can switch from type X1 to type X2. Type X1 is, for example, Examples 1 / 2 of Mode 1 described above, and Type X2 is, for example, Examples 1 / 2 / 3 / 4 of Mode 1 described above. Type X1 / X2 is predefined or configured using RRC. Alternatively, the signal / channel / service type that enables the aforementioned switch in the above-described situation can also be predefined or configured using RRC messages.

[0200] In some embodiments, the terminal device sends measurement results to the network device; the measurement results refer to at least one of the following: cell, cell group, channel, channel group, partial bandwidth (BWP), beam.

[0201] For example, the measurement results include at least one of the following: received signal strength, channel occupancy (CO) information, information requiring channel detection, and information not requiring channel detection.

[0202] For example, the terminal device sends measurement results under certain conditions; the conditions include: the received signal strength and / or channel occupancy is higher than a first threshold, and / or the received signal strength and / or channel occupancy is lower than a second threshold.

[0203] In some embodiments, after receiving a first signal (e.g., SSB and / or SIB1) from the second cell, the UE sends (or reports) fifth information to the first cell. The fifth information includes, for example, at least one of the following:

[0204] Channel access mode of the second cell;

[0205] Should channel detection be performed in the second cell?

[0206] The first information carried by the first signal transmitted by the second cell;

[0207] Channel configuration of the second cell (e.g., RB set and / or intra-cell guard band configuration of the second cell);

[0208] MIB of the second community;

[0209] SIB1 of the second community;

[0210] Among them, the first cell and the second cell belong to the same communication system or different communication systems, and the first cell is the UE's active serving cell.

[0211] Figure 16 This is an example diagram of a terminal device transmitting an uplink signal according to an embodiment of this application. For example... Figure 16 The UE receives a first signal (e.g., SSB / SIB1…) from the second cell (cell B, e.g., Phy-CID=5, Global-CID=19), and can report the fifth information to the first cell (cell A, e.g., Phy-CID=3, Global-CID=17). Figure 16 As shown, the UE and the first cell (cell A) can also exchange information.

[0212] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0213] As can be seen from the above embodiments, the terminal device receives a first signal sent by the network device. This first signal is at least used by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and the terminal device uses uplink resources to send a second signal to the network device. Therefore, NR can support uplink transmission at higher frequencies, and the network device can flexibly control whether and how the terminal device performs channel detection, making it suitable for a variety of scenarios. Furthermore, it can minimize unnecessary channel detection, thereby saving power and improving resource utilization and throughput.

[0214] Second aspect of the embodiments

[0215] This application provides an uplink signal receiving method, which will be described from the perspective of a network device. The same content as the first aspect of the embodiment will not be repeated.

[0216] Figure 17 This is a schematic diagram of an uplink signal receiving method according to an embodiment of this application, as shown below. Figure 17 As shown, the method includes:

[0217] 1701, the network device sends a first signal to the terminal device, the first signal being used at least for the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0218] 1702, the network device receives the second signal sent by the terminal device using uplink resources.

[0219] It is worth noting that the above appendix Figure 17 The embodiments described herein are merely illustrative and are not limited thereto. For example, the execution order of various operations can be appropriately adjusted, and additional operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above description, and are not limited to the above-described embodiments. Figure 17 The records.

[0220] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0221] As can be seen from the above embodiments, the terminal device receives a first signal sent by the network device. This first signal is at least used by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and the terminal device uses uplink resources to send a second signal to the network device. Therefore, NR can support uplink transmission at higher frequencies, and the network device can flexibly control whether and how the terminal device performs channel detection, making it suitable for a variety of scenarios. Furthermore, it can minimize unnecessary channel detection, thereby saving power and improving resource utilization and throughput.

[0222] Third aspect of the embodiments

[0223] This application provides an uplink signal transmitting device. This device may be, for example, a terminal device, or one or more components or parts configured within the terminal device; details identical to those in the first aspect of the embodiment will not be repeated.

[0224] Figure 18 This is a schematic diagram of an uplink signal transmitting device according to an embodiment of this application, as shown below. Figure 18 As shown, the uplink signal transmitting device 1800 includes:

[0225] Receiving unit 1801 receives a first signal sent by a network device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0226] The transmitting unit 1802 uses uplink resources to transmit the second signal to the network device.

[0227] In some embodiments, the first signal includes at least one of the following: a synchronization signal block, a radio resource control message, a media access control element, and downlink control information.

[0228] In some embodiments, the uplink resources are on licensed frequency bands, or the uplink resources are on unlicensed frequency bands.

[0229] In some embodiments, the first signal is used to indicate the channel access mode and / or channel access type and / or operating frequency band.

[0230] In some embodiments, the first signal is a synchronization signal block; the terminal device determines whether and / or how to perform channel detection before transmitting the second signal based on at least one of the following:

[0231] The frequency domain location of the synchronization signal block;

[0232] The time-domain location of the synchronization signal block;

[0233] The time-frequency structure of the synchronization signal block;

[0234] The sequence of main synchronization signals in the synchronization signal block;

[0235] The sequence of auxiliary synchronization signals in the synchronization signal block;

[0236] The sequence of demodulation reference signals for the physical broadcast channel in the synchronization signal block;

[0237] The frequency domain location of the demodulation reference signal for the physical broadcast channel in the synchronization signal block;

[0238] The scrambling sequence of the physical broadcast channel in the synchronization signal block;

[0239] The load of the physical broadcast channel of the synchronization signal block;

[0240] The relative position of the synchronization signal block and the remaining minimum system information.

[0241] In some embodiments, the first signal includes a radio resource control message, a MAC CE, or a DCI; the terminal device determines, based on the first information included in the radio resource control message, not to perform channel detection before transmitting the second signal.

[0242] In some embodiments, the terminal device determines, based on first information included in the radio resource control message, whether to perform channel detection before transmitting the second signal, and / or determines the duration of channel detection before transmitting the second signal.

[0243] In some embodiments, the first signal includes a radio resource control message; if the radio resource control message does not include the first information, the terminal device does not perform channel detection before sending the second signal; or, if the radio resource control message includes the first information, the terminal device does not perform channel detection before sending the second signal.

[0244] In some embodiments, the first information is cell-specific or device-specific; the first information refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth, channel, beam, physical channel / signal, data carried by physical channel / signal.

[0245] In some embodiments, the first information is used to indicate the channel access mode and / or channel access type.

[0246] In some embodiments, when the operating frequency band is an unlicensed frequency band, the radio resource control message may include the first information; when the operating frequency band is a licensed frequency band, the radio resource control message may not include the first information.

[0247] In some embodiments, the first signal includes an SSB and an RRC message, wherein the SSB is used by the terminal device to determine that the operating frequency band is an unlicensed frequency band, or the SSB is used by the terminal device to determine that the operating frequency band is a licensed frequency band.

[0248] In some embodiments, the RRC message includes second information, which is used to indicate the operating frequency band; or, the first signal is also used to indicate the operating frequency band.

[0249] In some embodiments, when the first signal indicates that the operating frequency band is a licensed frequency band, the terminal device does not perform channel detection before sending the second signal.

[0250] In some embodiments, when the first signal indicates that the operating frequency band is an unlicensed frequency band, the terminal device performs channel detection before transmitting the second signal, and / or determines the length of time for performing channel detection before transmitting the second signal.

[0251] In some embodiments, the channel access mode includes a mode without channel detection, and / or the channel access mode also includes a dynamic channel access mode and / or a semi-static channel access mode.

[0252] In some embodiments, the first signal is used to indicate the channel access mode; when the first signal indicates that the channel access mode is not performing channel detection, the radio resource control message may include second information for indicating the operating frequency band; or, when the first signal indicates that the channel access mode is not performing channel detection, the radio resource control message may not include second information for indicating the operating frequency band.

[0253] In some embodiments, the channel access type includes a type that does not perform channel detection, and / or the channel access type also includes a type that performs channel detection.

[0254] In some embodiments, the uplink resources are configured by RRC messages, or the uplink resources are scheduled by downlink control information or random access response and the DCI or RAR does not include an information field for indicating the channel access type.

[0255] In some embodiments, if the first information does not indicate that channel detection is not performed, the terminal device transmits the second signal using a predefined or preconfigured channel access type; wherein the predefined or preconfigured channel access type is either a type that does not perform channel detection, or a type that performs channel detection.

[0256] In some embodiments, the predefined or preconfigured channel access type refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth, channel, beam, physical channel / signal, and data carried by the physical channel / signal.

[0257] In some embodiments, the uplink resources are configured by RRC messages. If the first information does not indicate that channel detection is not performed, the terminal device transmits the second signal using the channel access type indicated by the third information.

[0258] In some embodiments, the third information refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth, channel, beam, physical channel / signal, and data carried by the physical channel / signal.

[0259] In some embodiments, the uplink resources are configured by RRC messages, or the uplink resources are scheduled by downlink control information or random access response and the DCI or RAR does not include an information field for indicating the channel access type.

[0260] In some embodiments, the first information is used to indicate the channel access type, and the terminal device transmits a second signal using the channel access type indicated by the first information.

[0261] In some embodiments, the second signal is a physical uplink shared channel, and the first or third information is included in the configuration information of the configuration authorization.

[0262] In some embodiments, the second signal is a detection reference signal, and the first information or the third information is included in the configuration information of the detection reference signal.

[0263] In some embodiments, the second signal is a physical random access channel, and the first or third information is included in the configuration information of the physical random access channel.

[0264] In some embodiments, the second signal is a physical uplink control channel, and the first or third information is included in the configuration information of the PUCCH, the configuration information of the scheduling request, or the configuration information of the channel state information.

[0265] In some embodiments, uplink resources are scheduled by DCI or RAR. If the first signal indicates that channel detection is not performed, the terminal device determines that the DCI or RAR used for scheduling uplink resources does not include an information field for indicating the channel access type, and the terminal device does not perform channel detection before sending the second signal.

[0266] In some embodiments, uplink resources are scheduled by DCI or RAR. If the first signal does not indicate that channel detection is not performed, the terminal device further determines, based on the fourth information, an information field included in the DCI or RAR used for scheduling uplink resources that indicates the channel access type. The fourth information is used to indicate at least the channel access type that the DCI or RAR can indicate.

[0267] In some embodiments, the terminal device transmits a second signal using the channel access type indicated by DCI or RAR, or, if the fourth information indicates a channel access type, it transmits a second signal using the channel access type indicated by the fourth information.

[0268] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0269] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The uplink signal transmitting device 1700 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0270] In addition, for the sake of simplicity, Figure 17 The diagram only exemplifies the connection relationships or signal flow between various components or modules; however, those skilled in the art should understand that various related technologies, such as bus connections, can be employed. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not impose any limitations on this.

[0271] As can be seen from the above embodiments, the terminal device receives a first signal sent by the network device. This first signal is at least used by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and the terminal device uses uplink resources to send a second signal to the network device. Therefore, NR can support uplink transmission at higher frequencies, and the network device can flexibly control whether and how the terminal device performs channel detection, making it suitable for a variety of scenarios. Furthermore, it can minimize unnecessary channel detection, thereby saving power and improving resource utilization and throughput.

[0272] Fourth aspect of the embodiment

[0273] This application provides an uplink signal receiving device. This device may be, for example, a network device, or one or more components or parts configured within a network device; details identical to those in the first and second aspects will not be repeated.

[0274] Figure 19 This is a schematic diagram of an uplink signal receiving device according to an embodiment of this application. Figure 19 As shown, the uplink signal receiving device 1900 includes:

[0275] Transmitting unit 1901 transmits a first signal to a terminal device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before transmitting a second signal; and

[0276] The receiving unit 1902 receives the second signal sent by the terminal device using uplink resources.

[0277] The above embodiments are merely illustrative examples of embodiments of this application, but this application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0278] It is worth noting that the above description only covers the components or modules relevant to this application, but this application is not limited thereto. The uplink signal receiving device 1900 may also include other components or modules, and for details regarding these components or modules, please refer to related technologies.

[0279] In addition, for the sake of simplicity, Figure 19 The diagram only exemplifies the connection relationships or signal flow between various components or modules; however, those skilled in the art should understand that various related technologies, such as bus connections, can be employed. The aforementioned components or modules can be implemented using hardware facilities such as processors, memory, transmitters, and receivers; this application does not impose any limitations on this.

[0280] As can be seen from the above embodiments, the terminal device receives a first signal sent by the network device. This first signal is at least used by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and the terminal device uses uplink resources to send a second signal to the network device. Therefore, NR can support uplink transmission at higher frequencies, and the network device can flexibly control whether and how the terminal device performs channel detection, making it suitable for a variety of scenarios. Furthermore, it can minimize unnecessary channel detection, thereby saving power and improving resource utilization and throughput.

[0281] Fifth aspect of the embodiment

[0282] This application also provides a communication system, which can be referred to. Figure 1 The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated. The communication system may include:

[0283] A terminal device receives a first signal, the first signal being used at least to determine whether and / or how to perform channel detection before transmitting a second signal; and to transmit the second signal using uplink resources; and

[0284] A network device that sends the first signal and receives the second signal.

[0285] This application also provides a network device, such as a base station, but this application is not limited to this and may also include other network devices.

[0286] Figure 20 This is a schematic diagram illustrating the configuration of a network device according to an embodiment of this application. Figure 20 As shown, the network device 2000 may include a processor 2010 (e.g., a central processing unit CPU) and a memory 2020; the memory 2020 is coupled to the processor 2010. The memory 2020 can store various types of data; it also stores an information processing program 2030, and executes the program 2030 under the control of the processor 2010.

[0287] For example, processor 2010 may be configured to execute a program to implement the uplink signal receiving method as described in the embodiments of the second aspect. For example, processor 2010 may be configured to perform the following control: sending a first signal to a terminal device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and receiving the second signal sent by the terminal device using uplink resources.

[0288] In addition, such as Figure 20 As shown, network device 2000 may also include: transceiver 2040 and antenna 2050, etc.; the functions of the above components are similar to those in the prior art, and will not be described in detail here. It is worth noting that network device 2000 is not necessarily required to include... Figure 20 All components shown; in addition, the network device 2000 may also include Figure 20 For components not shown, please refer to existing technologies.

[0289] This application also provides a terminal device, but the application is not limited thereto and may also include other devices.

[0290] Figure 21This is a schematic diagram of a terminal device according to an embodiment of this application. Figure 21 As shown, the terminal device 2100 may include a processor 2110 and a memory 2120; the memory 2120 stores data and programs and is coupled to the processor 2110. It is worth noting that this figure is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunications functions or other functions.

[0291] For example, processor 2110 may be configured to execute a program to implement the uplink signal transmission method as described in the first aspect embodiment. For example, processor 2110 may be configured to perform the following control: receiving a first signal transmitted by a network device, the first signal being used at least by a terminal device to determine whether and / or how to perform channel detection before transmitting a second signal; and transmitting the second signal to the network device using uplink resources.

[0292] like Figure 21 As shown, the terminal device 2100 may further include: a communication module 2130, an input unit 2140, a display 2150, and a power supply 2160. The functions of these components are similar to those in the prior art and will not be described in detail here. It is worth noting that the terminal device 2100 is not necessarily required to include these components. Figure 21 Of all the components shown, the aforementioned components are not essential; furthermore, the terminal device 2100 may also include Figure 21 For components not shown, please refer to existing technologies.

[0293] This application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to perform the uplink signal transmission method described in the first aspect embodiment.

[0294] This application also provides a storage medium storing a computer program, wherein the computer program causes a terminal device to execute the uplink signal transmission method described in the first aspect embodiment.

[0295] This application also provides a computer program, wherein when the program is executed in a network device, the program causes the network device to perform the uplink signal receiving method described in the second aspect of the embodiment.

[0296] This application also provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the uplink signal receiving method described in the second aspect of the embodiment.

[0297] The apparatus and methods described above in this application can be implemented in hardware or in combination with software. This application relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. This application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.

[0298] The methods / apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or combinations of one or more functional block diagrams shown in the figures can correspond to various software modules in a computer program flow, or to various hardware modules. These software modules can correspond to the various steps shown in the figures, respectively. These hardware modules can be implemented, for example, using a field-programmable gate array (FPGA) to embed these software modules.

[0299] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a high-capacity MEGA-SIM card or a high-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the high-capacity flash memory device.

[0300] One or more and / or one or more combinations of functional blocks described in the accompanying drawings can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more and / or one or more combinations of functional blocks described in the accompanying drawings can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0301] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

[0302] Regarding the implementation methods including the above embodiments, the following notes are also disclosed:

[0303] Appendix 1: A method for transmitting an uplink signal, comprising:

[0304] The terminal device receives a first signal sent by the network device, the first signal being used at least to determine whether and / or how to perform channel detection before sending a second signal; and

[0305] The terminal device uses uplink resources to send the second signal to the network device.

[0306] Appendix 2: According to the method described in Appendix 1, the first signal includes at least one of the following: Synchronization Signal Block (SSB), Radio Resource Control (RRC) message, Medium Access Control (MAC) Control Element (CE), Downlink Control Information (DCI), and Random Access Response (RAR).

[0307] Note 3: According to the method described in Note 1, the uplink resource is on a licensed frequency band, or the uplink resource is on an unlicensed frequency band.

[0308] Appendix 4. The method according to any one of Appendices 1 to 3, wherein the terminal device determines whether to perform channel detection before transmitting the second signal, includes: the terminal device determining not to perform channel detection before transmitting the second signal, or the terminal device determining to perform channel detection before transmitting the second signal.

[0309] Appendix 5. The method according to any one of Appendices 1 to 3, wherein the terminal device determines how to perform channel detection before transmitting the second signal, including: the terminal device determining the duration of the channel detection performed before transmitting the second signal; and / or, the terminal device determining the channel access type of the channel detection performed before transmitting the second signal; and / or, the terminal device determining the channel access priority of the channel detection performed before transmitting the second signal.

[0310] Appendix 6. The method according to any one of Appendices 1 to 5, wherein the first signal is used to indicate at least one of the following for channel detection performed by the terminal device before sending the second signal: the duration of channel detection; the value of the random number used for channel detection; the value of the first parameter used to generate the random number used for channel detection; the range of values ​​of the first parameter used to generate the random number used for channel detection; the channel access type; the channel access priority; and the channel access mode.

[0311] Note 7. The method according to any one of Notes 1 to 5, wherein the first signal is used to indicate the channel access mode and / or channel access type and / or operating frequency band.

[0312] Appendix 8. The method according to any one of Appendices 1 to 7, wherein the first signal is a synchronization signal block (SSB); the terminal device determines whether and / or how to perform channel detection before transmitting the second signal based on at least one of the following:

[0313] The frequency domain location of the synchronization signal block (SSB);

[0314] The time-domain location of the synchronization signal block (SSB);

[0315] The time-frequency structure of the synchronization signal block (SSB);

[0316] The sequence of the primary synchronization signal (PSS) in the synchronization signal block (SSB);

[0317] The sequence of auxiliary synchronization signals (SSS) in the synchronization signal block (SSB);

[0318] The sequence of demodulation reference signals (DMRS) for the physical broadcast channel (PBCH) in the synchronization signal block (SSB);

[0319] The frequency domain location of the demodulation reference signal (DMRS) of the physical broadcast channel (PBCH) in the synchronization signal block (SSB);

[0320] The scrambling sequence of the Physical Broadcast Channel (PBCH) in the Synchronization Signal Block (SSB);

[0321] The load of the Physical Broadcast Channel (PBCH) of the Synchronization Signal Block (SSB);

[0322] The relative position of the synchronization signal block (SSB) and the residual minimum system information (RMSI).

[0323] Appendix 9. The method according to any one of Appendices 1 to 7, wherein the first signal includes the Radio Resource Control (RRC) message or MAC CE or DCI; the terminal device determines, based on the first information included in the Radio Resource Control (RRC) message, not to perform channel detection before transmitting the second signal; or,

[0324] The terminal device determines, based on the first information included in the Radio Resource Control (RRC) message, to perform channel detection before transmitting the second signal, and / or determines the duration of channel detection before transmitting the second signal.

[0325] Appendix 10. The method according to any one of Appendices 1 to 7, wherein the first signal includes the Radio Resource Control (RRC) message; if the first information is not included in the Radio Resource Control (RRC) message, the terminal device does not perform channel detection before sending the second signal; or, if the first information is included in the Radio Resource Control (RRC) message, the terminal device does not perform channel detection before sending the second signal.

[0326] Note 11. The method according to Note 9 or 10, wherein the first information is cell-specific or UE-specific.

[0327] Note 12. The method according to any one of Notes 9 to 11, wherein the first information refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / signal, data carried by physical channel / signal.

[0328] Note 13. The method according to any one of Notes 9 to 12, wherein, when the operating frequency band is an unlicensed frequency band, the Radio Resource Control (RRC) message may include the first information; and when the operating frequency band is a licensed frequency band, the Radio Resource Control (RRC) message may not include the first information.

[0329] Note 14. The method according to any one of Notes 9 to 13, wherein the first information is used to indicate the channel access mode and / or channel access type.

[0330] Note 15. The method according to Note 13 or 14, wherein the first signal includes an SSB and the RRC message, wherein the SSB is used by the terminal device to determine that the operating frequency band is an unlicensed frequency band, or the SSB is used by the terminal device to determine that the operating frequency band is a licensed frequency band.

[0331] Note 16. The method according to Note 13 or 14, wherein the RRC message includes second information for indicating the operating frequency band.

[0332] Appendix 17. According to the method described in Appendix 7, wherein, when the first signal indicates that the operating frequency band is a licensed frequency band, the terminal device does not perform channel detection before sending the second signal; or,

[0333] When the first signal indicates that the operating frequency band is an unlicensed frequency band, the terminal device performs channel detection before sending the second signal, and / or determines the length of time for channel detection before sending the second signal.

[0334] Note 18. The method according to Note 7 or 14, wherein the channel access mode includes a mode in which channel detection is not performed.

[0335] Note 19. According to the method described in Note 18, the first signal is used to indicate the channel access mode; when the first signal indicates that the channel access mode is without channel detection, the Radio Resource Control (RRC) message can include second information for indicating the operating frequency band, or when the first signal indicates that the channel access mode is not without channel detection, the Radio Resource Control (RRC) message cannot include second information for indicating the operating frequency band.

[0336] Note 20: According to the method described in Note 18, the channel access mode further includes a dynamic channel access mode and / or a semi-static channel access mode.

[0337] Note 21: The method according to Note 7 or 14, wherein the channel access type includes a type that does not perform channel detection.

[0338] Note 22: According to the method described in Note 21, the type that does not perform channel detection is used to initialize occupied channels and / or for shared channels.

[0339] Note 23: According to the method described in Note 21, the channel access type further includes a type for performing channel detection.

[0340] Appendix 24: According to the method described in Appendix 14, the uplink resource is configured by an RRC message, or the uplink resource (or the second signal) is scheduled by a downlink control information (DCI) or a random access response (RAR) and the DCI or RAR does not include an information field for indicating the channel access type.

[0341] If the first information does not indicate that channel detection should not be performed, the terminal device sends the second signal using a predefined or preconfigured channel access type.

[0342] Note 25: According to the method described in Note 24, the predefined or preconfigured channel access type is a type that does not perform channel detection, or the predefined or preconfigured channel access type is a type that performs channel detection.

[0343] Note 26. According to the method described in Note 24, the predefined or preconfigured channel access type is for at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / signal, data carried by physical channel / signal.

[0344] Note 27: According to the method described in Note 14, wherein the uplink resource is configured by an RRC message, and in the absence of an indication from the first information not to perform channel detection, the terminal device transmits the second signal using the channel access type indicated by the third information.

[0345] Note 28. According to the method described in Note 27, the third information refers to at least one of the following: system, cell group, cell, carrier, channel group, partial bandwidth (BWP), channel, beam, physical channel / signal, data carried by physical channel / signal.

[0346] Note 29. According to the method described in Note 14, the uplink resource is configured by an RRC message, or the uplink resource (or the second signal) is scheduled by a downlink control information (DCI) or a random access response (RAR) and the DCI or RAR does not include an information field for indicating the channel access type.

[0347] The first information is used to indicate the channel access type, and the terminal device sends the second signal using the channel access type indicated by the first information.

[0348] Note 30: The method according to Note 27 or 28, wherein the second signal is a Physical Uplink Shared Channel (PUSCH), and the first information or the third information is included in the configuration information of the Configuration Grant (CG).

[0349] Note 31: The method according to Note 27 or 28, wherein the second signal is a sounding reference signal (SRS), and the first information or the third information is included in the configuration information of the sounding reference signal (SRS).

[0350] Note 32. The method according to Note 27 or 28, wherein the second signal is a Physical Random Access Channel (PRACH), and the first information or the third information is included in the configuration information of the Physical Random Access Channel (PRACH).

[0351] Note 33: According to the method described in Note 27 or 28, wherein the second signal is a Physical Uplink Control Channel (PUCCH), and the first information or the third information is included in the configuration information of the PUCCH or the configuration information of the Scheduling Request (SR) or the configuration information of the Channel State Information (CSI).

[0352] Appendix 34. According to the method described in Appendix 1, wherein the uplink resource (or the second signal) is scheduled by DCI or RAR, and in the case where the first signal indicates that channel detection is not performed, the terminal device determines that the DCI or RAR used for scheduling the uplink resource does not include an information field for indicating the channel access type, and the terminal device does not perform channel detection before sending the second signal.

[0353] Appendix 35. According to the method described in Appendix 1, wherein the uplink resource (or the second signal) is scheduled by DCI or RAR, and in the absence of an indication by the first signal not to perform channel detection, the terminal device further determines, according to fourth information, an information field included in the DCI or RAR used for scheduling the uplink resource for indicating the channel access type, wherein the fourth information is at least used to indicate the channel access type that the DCI or RAR can indicate.

[0354] Note 36. According to the method described in Note 35, the terminal device transmits the second signal using the channel access type indicated by the DCI or RAR, or, if the fourth information indicates a channel access type, transmits the second signal using the channel access type indicated by the fourth information.

[0355] Note 37. The method according to any one of Notes 1 to 36, wherein the method further comprises:

[0356] The terminal device sends measurement results to the network device; the measurement results refer to at least one of the following: cell, cell group, channel, channel group, partial bandwidth (BWP), beam.

[0357] Note 38. According to the method described in Note 37, the measurement results include at least one of the following: received signal strength, channel occupancy information, information requiring channel detection, and information not requiring channel detection.

[0358] Note 39. The method according to Note 37 or 38, wherein the terminal device sends the measurement result under certain conditions; the conditions include: the received signal strength and / or channel occupancy is higher than a first threshold, and / or the received signal strength and / or channel occupancy is lower than a second threshold.

[0359] Appendix 40. A method for receiving uplink signals, comprising:

[0360] The network device sends a first signal to the terminal device, the first signal being used at least by the terminal device to determine whether and / or how to perform channel detection before sending a second signal; and

[0361] The network device receives the second signal sent by the terminal device using uplink resources.

[0362] Appendix 41. A terminal device includes a memory and a processor, the memory storing a computer program and the processor being configured to execute the computer program to implement the uplink signal transmission method as described in any one of Appendices 1 to 39.

[0363] Appendix 42. A network device includes a memory and a processor, the memory storing a computer program and the processor being configured to execute the computer program to implement the uplink signal reception method as described in Appendix 40.

Claims

1.A transmitting apparatus of an uplink signal, configured to a terminal device, the apparatus comprising: a receiver configured to receive a radio resource control message, and a downlink control information or a random access response, the downlink control information or the random access response being used to schedule an uplink transmission; and a transmitter configured to transmit the uplink transmission; and a processor configured to control: in a case that the received radio resource control message does not comprise first information, not performing a channel access procedure for transmitting the uplink transmission; in a case that the received radio resource control message comprises first information, performing a channel access procedure for transmitting the uplink transmission, determining a channel access type for transmitting the uplink transmission according to information in the downlink control information or the random access response, the channel access type comprising a type 1 channel access which performs channel sensing, and / or a type 2 channel access, or a type 3 channel access which does not perform channel sensing. the radio resource control message comprises a broadcasted radio resource control message and / or a dedicated radio resource control message for the terminal device, the broadcasted radio resource control message comprising a system information block. the first information is cell-specific or device-specific. the first information is information for a cell. the processor is further configured to control: in a case that the received radio resource control message does not comprise first information for a cell, the terminal device not performing a channel access procedure for transmitting an uplink transmission of the cell; in a case that the received radio resource control message comprises first information, the terminal device performing a channel access procedure for transmitting an uplink transmission of the cell. the radio resource control message comprises second information for indicating a frequency range of a cell, the second information indicating a frequency range index of the frequency range of the cell; the frequency range indicated by the frequency range index is predefined as a licensed frequency range or an unlicensed frequency range. in a case that the frequency range is a licensed frequency range, there is no first information for the cell; or, in a case that the frequency range is an unlicensed frequency range, there is optionally first information for the cell. the first information is for a cell operating in a frequency range from 52.6 GHz to 71 GHz. the receiver is further configured to: receive fourth information carried by radio resource control signaling, the fourth information being used to configure the channel access type, and being indicated by information contained in the downlink control information or the random access response. the channel access type configured by the fourth information comprises a type which performs channel sensing and a type which does not perform channel sensing. the channel access type configured by the fourth information comprises a type 1 channel access, a type 2 channel access or a type 3 channel access. the uplink transmission is a PRACH, a PUCCH, a PUSCH or an SRS. the transmitter is further configured to transmit measurement results, wherein the measurement results comprise received signal strength for a beam. ​ ​ ​ ​ ​ 2. The apparatus of claim 1, wherein, ​ 3. The apparatus of claim 1, wherein, ​ 4. The apparatus of claim 1, wherein, ​ 5. The apparatus of claim 1, wherein, ​ ​ ​ 6. The apparatus of claim 1, wherein, ​ 7. The apparatus of claim 6, wherein, ​ ​ 8. The apparatus of claim 1, wherein, ​ 9. The apparatus of claim 1, wherein, ​ ​ 10. The apparatus of claim 9, wherein, ​ 11. The apparatus of claim 9 or 10, wherein, ​ 12. The apparatus of claim 1, wherein, ​ 13. The apparatus of claim 1, wherein, ​ 14.A receiving apparatus of uplink signals, configured to a network device, the apparatus comprising: a transmitter configured to transmit a radio resource control message, and a downlink control information or a random access response, the downlink control information or the random access response being used to schedule an uplink transmission; and a receiver configured to receive the uplink transmission transmitted by a terminal device using an uplink resource; wherein, in a case that the radio resource control message does not comprise first information, the terminal device does not perform a channel access procedure for transmitting the uplink transmission; in a case that the radio resource control message comprises the first information, the terminal device performs the channel access procedure for transmitting the uplink transmission, and determines a channel access type for transmitting the uplink transmission according to information in the downlink control information or the random access response, the channel access type comprising a type 1 channel access which performs channel sensing, and / or a type 2 channel access, or a type 3 channel access which does not perform channel sensing. 15.A communication system comprising: a network device configured to transmit a radio resource control message, and a downlink control information or a random access response, the downlink control information or the random access response being used to schedule an uplink transmission, and receive the uplink transmission; and a terminal device configured to receive the radio resource control message, and the downlink control information or the random access response, and transmit the uplink transmission; wherein the terminal device is configured to control as follows: in a case that the radio resource control message does not comprise first information, not performing a channel access procedure for transmitting the uplink transmission; in a case that the radio resource control message comprises the first information, performing the channel access procedure for transmitting the uplink transmission, and determining a channel access type for transmitting the uplink transmission according to information in the downlink control information or the random access response, the channel access type comprising a type 1 channel access which performs channel sensing, and / or a type 2 channel access, or a type 3 channel access which does not perform channel sensing.

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