Methods, devices, and systems for configuring and transmitting scheduling requests

Abstract

The present disclosure describes methods, systems, and devices for configuring and transmitting scheduling requests (SRs). One method includes a user terminal (UE) configured with a primary cell (PCell) and a secondary cell (SCell) determining a first SR in the PCell, a first logical channel identity (ID) being associated with the first SR configured in the PCell, and the UE determining a second SR in the SCell. Another method includes a base station configuring a UE with a PCell and a SCell, wherein: a first SR is configured in the PCell, a first logical channel ID is associated with the first SR configured in the PCell, and / or a second SR is configured in the SCell.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to methods, devices, and systems for configuring and transmitting a Scheduling Request (SR). Background Art

[0002] Wireless communication technologies are driving the world toward an increasingly interconnected and networked society. High-speed, low-latency wireless communications rely on efficient network resource management and allocation between user terminals and radio access network nodes (including but not limited to base stations). Next-generation networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the needs of diverse industries and users.

[0003] Based on the SR configuration information, SR is configured for the user equipment (UE) in the cell. The SR configuration information may include the initial time slot of the SR and the period of the SR. The SR configuration information may also include the physical uplink control channel (PUCCH) resources (SR PUCCH) used to transmit the SR. In this way, a series of time slots for transmitting the SR PUCCH may be determined based on the SR configuration information. When the UE has an SR request to send (i.e., the SR is active), the UE may transmit the SR PUCCH in the determined time slot. When the UE has an SR request to send (i.e., the SR is active), the UE may not transmit the SR PUCCH in the determined time slot. Summary of the Invention

[0004] This document relates to wireless communication methods, systems, and devices, and more specifically, to methods, systems, and devices for configuring and transmitting scheduling requests (SRs). Various embodiments of the present disclosure may include novel SR configuration and transmission methods that facilitate improved joint operation of SR physical uplink control (PUCCH) transmissions and PUCCH cell switching to improve resource utilization efficiency and enhance latency performance in wireless communications, including but not limited to ultra-reliable low-latency communication (URLLC).

[0005] In one embodiment, the present disclosure describes a wireless communication method. The method includes: a UE configured with a primary cell (PCell) and a secondary cell (SCell) determines a first SR in the PCell, wherein a first logical channel identifier (ID) is associated with the first SR configured in the PCell; and the UE determines a second SR in the SCell.

[0006] In one embodiment, the present disclosure describes a wireless communication method, including configuring, by a base station, a PCell and an SCell for a UE, wherein: a first SR is configured in the PCell, a first logical channel ID is associated with the first SR configured in the PCell; and / or a second SR is configured in the SCell.

[0007] In some other embodiments, a wireless communication device may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0008] In some other embodiments, a wireless communication device may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0009] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to perform the above method.

[0010] The above-described aspects and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 An example of a wireless communication system is shown, which includes a radio network node and one or more user terminals.

[0012] Figure 2 An example of a network node is shown.

[0013] Figure 3 An example of a user terminal is shown.

[0014] Figure 4A A flow chart of a wireless communication method is shown.

[0015] Figure 4B A flow chart of another method for wireless communication is shown.

[0016] Figure 5 A schematic diagram of an exemplary embodiment for wireless communication is shown.

[0017] Figure 6 A schematic diagram of another exemplary embodiment for wireless communication is shown.

[0018] Figure 7 A schematic diagram of another exemplary embodiment for wireless communication is shown. DETAILED DESCRIPTION

[0019] The present disclosure will now be described in detail hereinafter with reference to the accompanying drawings, which form a part hereof and show by way of illustration specific examples of embodiments. However, it should be noted that the present disclosure can be embodied in various different forms, and thus, the subject matter encompassed or claimed is not intended to be construed as limited to any one of the embodiments set forth below.

[0020] Throughout the specification and claims, terms may have nuanced meanings that are suggested or implied by the context beyond their explicitly stated meanings. Likewise, the phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. For example, the claimed subject matter is intended to include exemplary embodiments or combinations of all or part of the embodiments.

[0021] Generally, terms can be understood, at least in part, from their use in the context. For example, terms used herein (such as "and," "or," or "and / or") can include multiple meanings, which can depend, at least in part, on the context in which the terms are used. Typically, "or," if used in an associative list, such as A, B, or C, is intended to mean A, B, and C (used herein in an inclusive sense) as well as A, B, or C (used herein in an exclusive sense). Additionally, depending, at least in part, on the context, the terms "one or more" or "at least one" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Similarly, depending, at least in part, on the context, terms such as "a," "an," or "the" can likewise be understood to convey singular use or to convey plural use. Additionally, also depending, at least in part, on the context, the terms "based on" or "determined by" can be understood to not necessarily be intended to convey an exclusive set of factors, and can alternatively allow for the presence of additional factors that are not necessarily explicitly described.

[0022] This disclosure describes methods and apparatus for configuring and transmitting scheduling requests (SRs).

[0023] Next-generation (NG) mobile communication systems are driving the world toward an increasingly interconnected and networked society. High-speed, low-latency wireless communications rely on efficient network resource management and allocation between user terminals and radio access network nodes (including but not limited to wireless base stations). NG networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the needs of diverse industries and users.

[0024] Based on the scheduling request (SR) configuration information, SR is configured for a cell including one or more user terminals (UEs). The SR configuration information may include the initial time slot of the SR and the period of the SR. The SR configuration information may also include PUCCH resources (SR PUCCH) for transmitting the SR. In this way, a series of time slots for transmitting the SR PUCCH may be determined based on the SR configuration information. When the UE has an SR request to send (i.e., the SR is active), the UE may transmit the SR PUCCH in the determined time slot. When the UE has an SR request to send (i.e., the SR is active), the UE may not transmit the SR PUCCH in the determined time slot.

[0025] In some implementations, the SR PUCCH resources for a cell can be configured with a repetition factor N (N is a positive integer). When N corresponding to the SR PUCCH is greater than 1 and when SR is active, for the first SR PUCCH transmission, the UE can determine the timeslot based on the SR configuration information and then transmit the SR PUCCH in the corresponding timeslot. For one or more remaining (N-1) SR PUCCH transmissions in the cell, the UE can determine the corresponding timeslot from the cell based on the following conditions.

[0026] One condition of a time slot may be that an uplink symbol (UL symbol) or a flexible symbol (F symbol) is provided in the time slot, and the uplink symbol or the flexible symbol has the same index as the first symbol of the first SR PUCCH transmission of the SR, for example, the index is the symbol index in the time slot.

[0027] Another condition of the time slot may be that consecutive UL / F symbols can be provided in the time slot, and the index of the starting symbol of the consecutive UL / F symbols is the same as the index of the first symbol of the first SR PUCCH transmission, and the number of consecutive UL / F symbols is greater than or equal to the number of symbols used for the first SR PUCCH transmission.

[0028] In some embodiments, when a time slot satisfies the above two conditions, the time slot is determined as a time slot for transmitting the SRPUCCH, and the remaining SR PUCCHs are transmitted in the time slot by using the same SR PUCCH resources as the first SR PUCCH transmission.

[0029] In some implementations, PUCCH cell switching may be supported. For example, a UE is configured with a primary cell (PCell) and a secondary cell (SCell), and the UE is configured to transmit Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) PUCCH between the PCell and the SCell based on a predefined PUCCH slot pattern between the PCell and the SCell. This mechanism may be referred to as semi-static PUCCH cell switching.

[0030] In some embodiments, a dynamic PUCCH cell switching mechanism may be supported. For example, downlink control information (DCI) may be used to indicate a cell from a PCell and a SCell for transmission of a HARQ-ACK PUCCH. In some embodiments, when the DCI schedules a physical downlink shared channel (PDSCH), the DCI may also indicate a cell from a PCell and a SCell for transmission of a HARQ-ACK PUCCH corresponding to the PDSCH. In the case where the uplink (UL) time slot of the PCell and the UL time slot of the SCell are complementary, for example but not limited to, when both the PCell and the SCell are cells in time division duplex (TDD) mode, this mechanism may allow the HARQ-ACK PUCCH to be transmitted as early as possible.

[0031] This disclosure describes various embodiments of methods for supporting joint operation of SR transmission and PUCCH cell switching.

[0032] Figure 1 A wireless communication system 100 is shown, which includes a radio network node 118 and one or more UEs 110. The radio network node may include a network base station, which may be a NodeB (NB, e.g., gNB) in the context of mobile telecommunications. Each UE may wirelessly communicate with the radio network node via one or more radio channels 115 for downlink / uplink communication. For example, a first UE 110 may wirelessly communicate with the radio network node 118 via a channel comprising multiple radio channels during a specific time period. The network base station 118 may send higher-layer signaling to the UE 110. The higher-layer signaling may include configuration information for communication between the UE and the base station. In one embodiment, the higher-layer signaling may include Radio Resource Control (RRC) messages.

[0033] Figure 2 An example of an electronic device 200 for implementing a network base station is shown. The exemplary electronic device 200 may include wireless transmit / receive (Tx / Rx) circuitry 208 for transmitting / receiving communications with a UE and / or other base stations. The electronic device 200 may also include network interface circuitry 209 to enable the base station to communicate with other base stations and / or a core network, such as optical or wired interconnects, Ethernet, and / or other data transmission media / protocols. The electronic device 200 may optionally include an input / output (I / O) interface 206 for communicating with an operator or the like.

[0034] The electronic device 200 may also include system circuitry 204. The system circuitry 204 may include one or more processors 221 and / or memory 222. The memory 222 may include an operating system 224, instructions 226, and parameters 228. The instructions 226 may be configured to cause one or more of the processors 224 to perform the functions of a network node. The parameters 228 may include parameters for supporting the execution of the instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and / or other parameters.

[0035] Figure 3An example of an electronic device for implementing a terminal device 300 (e.g., a UE) is shown. The UE 300 may be a mobile device, such as a smartphone or a mobile communication module provided in a vehicle. The UE 300 may include a communication interface 302, a system circuit 304, an I / O interface 306, a display circuit 308, and a storage device 309. The display circuit may include a user interface 310. The system circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. The system circuit 304 may be implemented, for example, using one or more systems on a chip (SoCs), application-specific integrated circuits (ASICs), discrete analog circuits, digital circuits, and other circuits. The system circuit 304 may be part of any desired functionality implemented in the UE 300. In this regard, the system circuitry 304 may include logic to facilitate operations such as: decoding and playing music and videos, such as MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user input; storing and retrieving application data; establishing, maintaining, and terminating a cellular phone call or data connection (e.g., to access the Internet); establishing, maintaining, and terminating a wireless network connection, a Bluetooth connection, or other connection; and displaying relevant information on the user interface 310. The user interface 310 and the I / O interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 may include a microphone, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, a Universal Serial Bus (USB) connector, a memory card slot, a radiation sensor (e.g., an IR sensor), and other types of input.

[0036] refer to Figure 3The communication interface 302 may include radio frequency (RF) Tx and Rx circuitry 316 that handles the transmission and reception of signals via one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuitry, a digital-to-analog converter (DAC), a shaping table, an analog-to-digital converter (ADC), filters, a waveform shaper, a preamplifier, a power amplifier, and / or other logic for transmitting and receiving via one or more antennas or (for some devices) via a physical (e.g., wired) medium. The signals transmitted and received may conform to any of a variety of formats, protocols, modulation schemes (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, 4G / Long Term Evolution (LTE), 5G standards, and / or 6G standards. However, the techniques described below are applicable to other wireless communication technologies, whether derived from the 3rd Generation Partnership Project (3GPP), the GSM Association, 3GPP2, IEEE, or other partners or standards bodies.

[0037] refer to Figure 3 , the system circuit 304 may include one or more processors 321 and a memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to implement the desired functionality of the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT data, WiFi data, 3G data, 4G data, 5G data, 6G data, or other data that the UE 300 will send or has received via the communication interface 302. In various embodiments, the system power of the UE 300 may be provided by a power storage device (such as a battery or a transformer).

[0038] This disclosure describes a number of different embodiments for configuring and transmitting SR, which may be partially or fully described above. Figures 2 to 3The various embodiments of the present disclosure may implement a joint operation of SR PUCCH transmission and PUCCH cell switching, which may improve resource utilization efficiency and / or improve latency performance of wireless communications.

[0039] refer to Figure 4A The present disclosure describes various embodiments of a wireless communication method 400. The method may include some or all of the following steps: step 410, determining, by a UE configured with a PCell and an SCell, a first SR in the PCell, wherein a first logical channel identifier (ID) is associated with the first SR configured in the PCell; and / or step 420, determining, by the UE, a second SR in the SCell.

[0040] refer to Figure 4B The present disclosure describes various embodiments of a wireless communication method 450. The method may include some or all of the following steps: In step 460, the base station configures a PCell and an SCell for the UE, wherein: a first SR is configured in the PCell, and a first logical channel ID is associated with the first SR configured in the PCell; and / or a second SR is configured in the SCell.

[0041] In some embodiments, the method 400 or 450 may further include: the UE determining that the second logical channel ID associated with the second SR configured in the SCell is the same as the first logical channel ID associated with the first SR configured in the PCell.

[0042] In some embodiments, the PUCCH for transmitting the SR is configured with a repetition factor N, where N is a positive integer; and / or in response to the repetition factor N being greater than one, the UE performs PUCCH cell switching between the PCell and the SCell to determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern by: in response to the first logical channel ID being associated with the SR configured in the next earliest PUCCH time slot indicated by the PUCCH time slot pattern, selecting the next earliest PUCCH time slot to transmit the next SR PUCCH repetition.

[0043] In some embodiments, in response to SR PUCCH being triggered by the first logical channel ID, the UE performs PUCCH cell switching between the PCell and the SCell to determine the time slot for transmitting the SR PUCCH based on the PUCCH time slot pattern by: in response to the first logical channel ID being associated with the SR configured in the next earliest PUCCH time slot indicated by the PUCCH time slot pattern, selecting the next earliest PUCCH time slot to transmit the SR PUCCH.

[0044] In some implementations, in response to a next PUCCH slot in the PCell overlapping with a next PUCCH slot in the SCell in time domain, the next PUCCH slot in the PCell is selected to transmit the next SR PUCCH repetition.

[0045] In some embodiments, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and in response to the repetition factor N being greater than one, the UE performs a PUCCH cell switch between the PCell and the SCell to determine a time slot for transmitting the next SR PUCCH repetition based on at least one of the following: a PUCCH time slot mode configured between the PCell and the SCell, a PUCCH format of the first SRPUCCH repetition, the number of symbols of the first SR PUCCH repetition, an index of the first symbol of the first SR PUCCH repetition, a periodic position of the SR opportunity, or a logical channel ID associated with the SR.

[0046] In some embodiments, the UE determines the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern configured between the PCell and the SCell, the periodic position of the SR opportunity, and the logical channel ID associated with the SR.

[0047] In some implementations, the UE determines the PUCCH slot for transmitting the next SR PUCCH repetition based on the PUCCH slot pattern configured between the PCell and the SCell and the logical channel ID associated with the SR.

[0048] In some embodiments, the UE determines the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot mode configured between the PCell and the SCell, the number of symbols of the first SR PUCCH repetition, and the index of the first symbol of the first SR PUCCH repetition.

[0049] In some embodiments, the first periodic position of the first SR is configured in the PCell time slot; the second periodic position of the second SR is configured in the SCell time slot; and / or the PCell time slot and the SCell time slot do not overlap in the time domain.

[0050] In some embodiments, a first period of the first SR is the same as a second period of the second SR; and / or a first offset of the first SR is different from a second offset of the second SR.

[0051] In some embodiments, the first periodic position of the first SR is configured in the PCell time slot; the second periodic position of the second SR is configured in the SCell time slot; the PCell time slot and the SCell time slot overlap in the time domain; and / or in response to the invalidity of the SR PUCCH in one of the PCell time slot and the SCell time slot, or in response to the invalidity of the uplink control information (UCI) multiplexing performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR, one of the following is performed: not indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, indicating the other of the PCell time slot and the SCell time slot as a PUCCH time slot, or defaulting the other of the PCell time slot and the SCell time slot to a PUCCH time slot, wherein the SR PUCCH is transmitted in the PUCCH time slot.

[0052] In some embodiments, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and / or in response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition based on at least one of the following: determining a time slot for transmitting the next SR PUCCH repetition based on a PUCCH time slot mode, or determining the other of a PCell time slot and an SCell time slot to transmit the next SR PUCCH repetition.

[0053] In some embodiments, the first periodic position of the first SR is configured in the PCell time slot; the second periodic position of the second SR is configured in the SCell time slot; the PCell time slot and the SCell time slot overlap in the time domain; in response to the SR PUCCH being valid in both the PCell time slot and the SCell time slot, one of the following is performed: indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, or defaulting the PCell time slot and the SCell time slot to a PUCCH time slot; and / or in response to UCI multiplexing being performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being valid, one of the following is performed: indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, or defaulting the PCell time slot and the SCell time slot to a PUCCH time slot.

[0054] In some embodiments, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and / or in response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition based on at least one of the following: determining a time slot for transmitting the next SR PUCCH repetition based on a PUCCH time slot mode, or determining one of a PCell time slot and an SCell time slot to transmit the next SR PUCCH repetition.

[0055] In some embodiments, the first periodic position of the first SR is configured in the PCell time slot; the second periodic position of the second SR is configured in the SCell time slot; the PCell time slot and the SCell time slot overlap in the time domain; in response to the SR PUCCH in both the PCell time slot and the SCell time slot being valid and associated with the same logical channel ID, one of the following is performed: indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, or defaulting one of the PCell time slot and the SCell time slot to a PUCCH time slot; and / or in response to the SR in both the PCell time slot and the SCell time slot being associated with the same logical channel ID, and UCI multiplexing is performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR is valid, one of the following is performed: indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, or defaulting one of the PCell time slot and the SCell time slot to a PUCCH time slot.

[0056] In some embodiments, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and / or in response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition based on at least one of the following: determining a time slot for transmitting the next SR PUCCH repetition based on a PUCCH time slot mode, or determining one of a PCell time slot and an SCell time slot to transmit the next SR PUCCH repetition.

[0057] This disclosure describes various embodiments for supporting joint operation of SR PUCCH and PUCCH cell switching with a repetition factor greater than 1. The various embodiments may include implementations that can transmit SR as early as possible in a TDD system.

[0058] In some embodiments, a UE may be configured with a PCell and an SCell. The UE may be configured with SR in each SCell and PCell; and the UE may be configured with PUCCH resources in each PCell and SCell. The UE may be configured to perform PUCCH cell switching between the PCell and SCell based on the PUCCH time slot pattern configured between the PCell and SCell; or the UE may be configured to perform PUCCH cell switching between the PCell and SCell based on DCI indications.

[0059] In some embodiments, for SR configuration in SCell, SR configuration rules may include some or all of the following. The logical channel ID associated with the SR configured in the SCell may be the same as the logical channel ID associated with the SR configured in the PCell. That is, when SR is configured in the PCell, and when the logical channel ID associated with the SR is n, the logical channel ID associated with the SR configured in the SCell is also n. That is, multiple SRs in different cells may be configured to be associated with one logical channel ID. Once there is a scheduling request on logical channel n (indicating a logical channel with a logical channel ID of n), the UE may select the earliest SR cycle position to transmit the SR based on the SR configuration in the PCell and SCell, thereby minimizing the SR delay.

[0060] In some embodiments, Figure 5 SR configuration 500 is shown. For example, PCell is a TDD cell. The configured SR period is 2 slots, and the configured SR start slot is slot 2 (512). Therefore, SR PUCCH opportunities are configured in slot 2 (512), slot 4 (514), slot 6 (516), slot 8 (518), and slot 10 (520). In some embodiments, SR may be configured only in PCell and not in SCell. When the UE is in Figure 5 When there is an SR request in the third time slot (513), the UE may have to wait until the eighth time slot (518) to transmit the SR PUCCH because the SR PUCCH is a downlink time slot and cannot be transmitted in the fourth time slot (514) or the sixth time slot (516).

[0061] In some embodiments, Figure 6 Another non-limiting example of each SR configured in the PCell and SCell is shown. In the PCell, the configured SR has a period of 2 slots and a starting slot of 2 (612); and in the SCell, the configured SR has a period of 3 slots and a starting slot of 1 (631).

[0062] In some embodiments, SR can be configured in SCell according to the following rules. The logical channel ID associated with the SR configured in SCell can be configured to be the same as the logical channel ID associated with the SR in PCell. For example, SR is configured in PCell, the SR is configured to be associated with logical channel n, and its period position is Figure 6 SR is also configured in SCell, which is also configured to be associated with logical channel n, and its periodic position is Figure 6 Shown in.

[0063] In some embodiments, when logical channel n has a transmission request in the third slot (613) of the PCell, the UE can transmit an SR PUCCH in the fourth slot (634) of the SCell because the SR in the SCell is also configured to be associated with the logical channel ID n. Slots 614 and 616 may not be selected for transmitting the SR PUCCH because they are downlink slots. Slot 634 is selected for transmitting the SR PUCCH because it is an uplink slot with an SR PUCCH opportunity and / or because it is the earliest slot available for transmitting the SR PUCCH. Slots 637 and 618 may not be selected for transmitting the SR PUCCH because they are later than slot 634.

[0064] In some embodiments, the logical channel IDs associated with the SR configured in the PCell and the SCell may be different. For example, the SR configured in the PCell is associated with logical channel n, while the SR configured in the SCell is associated with logical channel n+1. In this case, when logical channel n has a transmission request in the third slot (613) of the PCell, the UE may not transmit the SR PUCCH in the fourth slot (634) of the SCell because, although the SR period is configured in the fourth slot (634) of the SCell, the logical channel ID corresponding to the SR is n+1 instead of n.

[0065] In some embodiments, the SRs in the PCell and SCell can be configured to be associated with the same logical channel ID, and the SR cycle position is Figure 6As shown in . When the same logical channel ID triggers a scheduling request in the 9th time slot (619) of the PCell, the UE can determine how to perform the transmission of the SR PUCCH in the 10th time slot from the 10th time slot (620) of the PCell or the 10th time slot (640) of the SCell. The UE can use at least one of the following methods to determine which time slot to use to transmit the SR PUCCH in the 10th time slot. Method 1, the UE can transmit the SR corresponding to the logical channel ID in the PCell and the SCell respectively. Method 2, the UE can select one cell from the PCell and the SCell to transmit the SR corresponding to the logical channel ID. Method 3, the SR corresponding to the logical channel ID can be transmitted in the PCell by default. Method 4, the SR corresponding to the logical channel ID can be transmitted in the SCell by default. Method 5, when the SR in one cell is canceled due to overlap with a downlink symbol or SSB symbol or core resource set (CORESET, for example, CORESET#0) symbol or a high priority channel, the UE can transmit the SR corresponding to the logical channel ID in another cell. Method 6: The UE may transmit an SR corresponding to the logical channel ID in a configured or indicated PUCCH cell. Here, the PUCCH cell may be configured or indicated from a PCell or SCell.

[0066] In some implementations, methods 3, 4, 5, and 6 can further help reduce base station reception complexity. In these methods, the SR can be transmitted only in one cell determined from the PCell and SCell. The base station does not need to attempt blind reception in both cells, thus reducing base station reception complexity.

[0067] In some embodiments, based on the SR configuration, for SR PUCCH with a repetition factor greater than 1, each SR PUCCH repetition can be in one of the PCell or the SCell.

[0068] In some embodiments, for an SR PUCCH with a repetition factor greater than 1 configured in the PCell and the SCell, the SR PUCCH resources in the SCell may have the same format and / or the same number of symbols as the SR PUCCH resources in the PCell.

[0069] In some embodiments, for logical channel n associated with SRs in the PCell and SCell, respectively, when the SR PUCCH of the SR is configured with a repetition factor greater than 1, and when one SR PUCCH repetition of the SR is transmitted in the PCell (or SCell), the next SR PUCCH repetition of the SR may be transmitted in the SCell (or PCell). In this case, the next SR PUCCH repetition of the SR may be transmitted in the same time slot as the periodic position of another SR associated with logical channel n.

[0070] Optionally and / or alternatively, in various embodiments, the UE is configured with a PCell and a SCell; the UE is configured with a SR in the SCell; and / or the UE is configured with PUCCH resources in the PCell and the SCell, respectively.

[0071] In some embodiments, the UE may be configured to perform PUCCH cell switching between the PCell and the SCell based on the PUCCH time slot pattern configured between the PCell and the SCell; or the UE may be configured to perform PUCCH cell switching between the PCell and the SCell based on DCI indication.

[0072] In some embodiments, the UE may send an SR PUCCH with a repetition factor greater than 1. The first SR PUCCH repetition of the SR may be transmitted in slot n in the PCell (or SCell), and the UE may determine the slots and SR PUCCH resources for the remaining SR PUCCH repetitions based on at least one of the following factors: the PUCCH slot mode configured between the PCell and the SCell, the PUCCH format of the first SR PUCCH repetition, the number of symbols of the first SR PUCCH repetition, the index of the first symbol of the first SR PUCCH repetition, the periodic position of the SR, and / or the logical channel ID.

[0073] In some implementations, the PUCCH slot pattern may be used to determine a set of slots and may be used to select one or more slots from the set of slots based on other factors.

[0074] In some embodiments, the PUCCH format may be used to select a PUCCH resource in the selected timeslot, eg, to select a PUCCH resource having the same format as the PUCCH corresponding to the first SR PUCCH repetition.

[0075] In some embodiments, the number of symbols in the first SR PUCCH repetition and the index of the first symbol of the first SR PUCCH repetition can be used to select a timeslot and determine the PUCCH resources in the selected timeslot. For example, a PUCCH resource having the same number of symbols as the PUCCH corresponding to the first SR PUCCH repetition can be selected. For another example, these factors can be used to select a PUCCH resource having the same first symbol index as the PUCCH corresponding to the first SR PUCCH repetition. For another example, these factors can be used to select a timeslot that can provide the requested PUCCH resources.

[0076] In some embodiments, the logical channel ID can be used to select an SR and / or SR PUCCH resource. For example, the logical channel ID can be used to select an SR with the same logical channel ID as the first SR PUCCH repetition. For another example, the logical channel ID can be used to select an SR PUCCH resource corresponding to the selected SR.

[0077] In some embodiments, the periodic position of the SR may be used to select a time slot. For example, the periodic position of the SR may be used to select a time slot in which the periodic position of the selected SR is located.

[0078] In some embodiments, after time slot n, the UE may select a time slot from the time slots of the PCell and / or SCell that satisfies one or more of the above conditions. In the selected time slot, the PUCCH resource is determined to be the PUCCH for transmitting the remaining SRPUCCH repetitions.

[0079] This disclosure describes some specific non-limiting examples of selecting time slots in the following paragraphs.

[0080] For a non-limiting example, refer to Figure 7 , SR is configured in both PCell and SCell and the configured SR is associated with the same logical channel ID k, and the period position / start position of SR is Figure 7 PUCCH time slots are also configured in PCell and SCell, as shown in Figure 7 As shown in FIG. 1 . In the PCell, SR PUCCH opportunities can be scheduled in the second time slot (712), the fourth time slot (714), the sixth time slot (716), the eighth time slot (718), and the tenth time slot (720). In the SCell, SRPUCCH opportunities can be scheduled in the first time slot (731), the fourth time slot (734), the seventh time slot (737), and the tenth time slot (740).

[0081] In some embodiments, in the PCell, the repetition factor of the SR PUCCH of the SR is 2. When logical channel k triggers SR transmission, and when the first SR PUCCH repetition of the SR is in the second slot (712) of the PCell, the UE can determine the position of the second SR PUCCH repetition of the SR and / or which PUCCH resource to use.

[0082] In some embodiments, a time slot can be selected for the second PUCCH repetition based on the periodic position of the SR, the PUCCH slot mode, and the logical channel ID. Specifically, a time slot is selected after the time slot in which the first PUCCH repetition is located, if the time slot is a PUCCH slot, is the time slot in which the periodic position of the SR is located, and is the time slot in which the SR is associated with logical channel k. In this way, the selected time slot is the fourth time slot of the SCell (734). In this way, the UE transmits the second PUCCH repetition in the fourth time slot of the SCell using the SRPUCCH resources configured in the SCell.

[0083] In some embodiments, a time slot can be selected for the second PUCCH repetition based on the PUCCH slot mode and the logical channel ID. Specifically, the time slot is selected after the time slot where the first PUCCH repetition is located, when the time slot is a PUCCH time slot, when the cell where the time slot is located is configured with a SR, and when the SR is associated with logical channel k. In this way, the selected time slot is the 3rd time slot of the SCell (733). In this way, the UE sends the second PUCCH repetition in the 3rd time slot of the SCell by using the SRPUCCH resources of the SR associated with logical channel k in the SCell.

[0084] For another non-limiting illustrative example, refer to Figure 7 , SR is configured in both PCell and SCell and the configured SR is associated with the same logical channel k, and the cycle position / starting time slot of SR is Figure 7 PUCCH time slots are also configured in PCell and SCell, as shown in Figure 7 shown.

[0085] In some embodiments, in the PCell, the repetition factor of the SR PUCCH of the SR is 2. When logical channel k triggers SR transmission, and when the first SR PUCCH repetition of the SR is in the second slot of the PCell, the UE can determine the position of the second SR PUCCH repetition of the SR and / or which PUCCH resource to use.

[0086] In some embodiments, the UE may select a time slot for the second PUCCH repetition based on the PUCCH time slot mode, the number of symbols of the first SR PUCCH repetition, and the index of the first symbol of the first SR PUCCH repetition. Specifically, after the time slot where the first PUCCH repetition is located, when the time slot is a PUCCH time slot, can provide the same number of symbols as the first PUCCH repetition, and can provide the same first symbol index as the first PUCCH repetition, the time slot is selected. In the selected time slot, based on the number of symbols of the first SR PUCCH repetition and the index of the first symbol of the first SR PUCCH repetition, the UE may select a PUCCH resource for the second PUCCH repetition from the cell where the selected time slot is located. In some embodiments, the selected time slot may be the third time slot of the SCell (733). The UE selects a PUCCH resource from the cell where the selected time slot is located. For example, if the selected PUCCH resource has the same number of symbols as the first PUCCH repetition and has the same first symbol index as the first PUCCH repetition, the time slot is selected. The UE sends the second PUCCH repetition in the selected PUCCH resource in the third time slot of the SCell.

[0087] In some embodiments, the UE may select a time slot for the second PUCCH repetition based on the PUCCH time slot mode and the number of symbols of the first SR PUCCH repetition. Specifically, after the time slot where the first PUCCH repetition is located, when the time slot is a PUCCH time slot and can provide the same number of symbols as the first PUCCH repetition, the time slot is selected. In the selected time slot, based on the number of symbols of the first SR PUCCH repetition, the UE may select a PUCCH resource for the second PUCCH repetition from the cell where the selected time slot is located. In some embodiments, the selected time slot may be the third time slot (733) of the SCell. The UE selects a PUCCH resource from the cell where the selected time slot is located. For example, when the selected PUCCH resource has the same number of symbols as the first PUCCH repetition, the time slot is selected. The UE sends the second PUCCH repetition in the selected PUCCH resource in the third time slot of the SCell. SRs configured in the PCell and the SCell may be associated with the same logical channel ID, and SR PUCCH resources of SRs associated with the same logical channel ID in the PCell and the SCell may be configured with the same number of symbols.

[0088] In some implementations, SR may not be mandatory to configure in the SCell. When SR is configured in the SCell, the operation of selecting a timeslot may be the same as the above method, and the selection of PUCCH resources for the second PUCCH repetition may also be completed as follows: the UE may select a PUCCH resource from the set of PUCCH resources configured for SR, and the selected PUCCH resource has the same number of symbols as the first PUCCH repetition and has the same first symbol index as the first PUCCH repetition.

[0089] The present disclosure describes multiple different embodiments for supporting joint operation of SR PUCCH and PUCCH cell switching. The multiple different embodiments may include the following implementation, wherein when the base station wants to configure SR in the PCell and SCell configured for the UE, the SR configuration may adopt at least one of the following rules. In some embodiments, these rules may be applicable when dynamic PUCCH cell switching is configured for the UE. By configuring SR in the PCell and SCell, the transmission of SR PUCCH can be achieved as early as possible by the UE in the PCell or SCell in TDD mode, thereby avoiding SR delay.

[0090] For Rule 1, when the base station configures SR for the UE in the PCell and the SR periodicity is in PCell timeslot n, and when the base station configures SR for the UE in the SCell and the SR periodicity is in SCell timeslot m, the base station can ensure that PCell timeslot n and SCell timeslot m do not overlap in the time domain. That is, when SR is configured in both the PCell and SCell, the timeslot where the SR in the PCell is located does not overlap in the time domain with the timeslot where the SR in the SCell is located.

[0091] In some embodiments, the SR in PCell slot n and the SR in SCell slot m may be associated with the same or different logical channel IDs.

[0092] In some embodiments, when a UE is configured with SR in the PCell and the periodic location of the SR is configured in PCell timeslot n, and when a UE is configured with SR in the SCell and the periodic location of the SR is configured in SCell timeslot m, the UE may expect that PCell timeslot n and SCell timeslot m do not overlap in the time domain. That is, when SR is configured for a UE in both the PCell and the SCell, the UE may not expect that the timeslot in which the SR in the PCell is located overlaps with the timeslot in which the SR in the SCell is located. Here and in various embodiments / implementations of the present disclosure, m and n are natural numbers or non-negative integers, for example, 0, 1, 2, 3, etc.

[0093] In some embodiments, the SR in PCell slot n and the SR in SCell slot m may be associated with the same or different logical channel IDs.

[0094] In some implementations, for SR configuration, SR can be configured first in the PCell. SR can then be configured in the SCell. In other words, once SR is configured in PCell timeslot n, when another SR is configured in the SCell, the timeslot of the SR configured in the SCell can be non-overlapping with PCell timeslot n.

[0095] In some embodiments, when both PCell slot n and SCell slot m are uplink slots and overlap in time domain, Rule 1 can ensure that only one SR configuration is used for transmission to reduce the situation where the base station blindly receives SRs from PCell and SCell.

[0096] For Rule 2, the base station configures an SR for the UE in the PCell and configures the periodic position of the SR in PCell slot n. The base station configures an SR for the UE in the SCell and configures the periodic position of the SR in SCell slot m. When slot n and slot m overlap in the time domain, and when the PUCCH of the SR configured in slot n (or slot m) is invalid, or when UCI multiplexing is performed in slot n (or slot m) and the resulting multiplexed PUCCH is invalid, the base station may: indicate slot m (or slot n) as the PUCCH slot; or default slot m (or slot n) as the PUCCH slot; not indicate slot n (or slot m) as the PUCCH slot; or expect to transmit an SR PUCCH in slot m (or slot n) when there is an active SR.

[0097] In some embodiments, if there is an active SR, the base station may expect to transmit the SRPUCCH in the PUCCH slot. In some embodiments, the SR in PCell slot n and the SR in SCell slot m may be associated with the same or different logical channel IDs.

[0098] In some embodiments, the UE is configured with an SR in the PCell, and the periodic position of the SR is configured in PCell slot n. The UE is configured with another SR in the SCell, and the periodic position of the SR is configured in SCell slot m. When slot n and slot m overlap in the time domain, and when the PUCCH of the SR configured in slot n (or slot m) is invalid, or when UCI multiplexing is performed in slot n (or slot m) and the resulting multiplexed PUCCH is invalid, the UE may expect slot m (or slot n) to be indicated as the PUCCH slot; or expect slot m (or slot n) to default to the PUCCH slot; or not expect slot n (or slot m) to be indicated as the PUCCH slot; or transmit the SR PUCCH in slot m (or slot n) if there is an active SR.

[0099] In some implementations, if there is an aggressive SR, the UE transmits an SR PUCCH in a PUCCH slot.

[0100] In some embodiments, the SR in PCell slot n and the SR in SCell slot m may be associated with the same or different logical channel IDs.

[0101] In some implementations, invalid PUCCH means that the PUCCH is cancelled due to overlapping with a downlink symbol or a symbol where an SSB is located or a symbol where a CORESET (including CORESET#0) is located. The PUCCH time slot is configured based on RRC signaling or indicated based on DCI signaling.

[0102] For Rule 3: The base station configures an SR for the UE in the PCell and configures the periodic position of the SR in PCell slot n. The base station configures an SR for the UE in the SCell and configures the periodic position of the SR in SCell slot m. If slot n and slot m overlap in the time domain, and when the PUCCHs for the SRs configured in both slot n and slot m are valid or when UCI multiplexing is performed in slot n (or slot m), the resulting multiplexed PUCCH is valid, then the base station can indicate a slot from slot n and slot m as the PUCCH slot; or default slot n (or slot m) as the PUCCH slot; or when there is an active SR, expect the SR PUCCH in the PCell (or SCell) to be transmitted in slot n (or slot m).

[0103] In some embodiments, if there is an active SR, the base station is expected to transmit an SR PUCCH in the PUCCH slot.In some embodiments, the SR in PCell slot n and the SR in SCell slot m can be associated with the same or different logical channel IDs.

[0104] In some embodiments, the UE is configured with an SR in the PCell, and the periodic position of the SR is configured in PCell slot n. The UE is configured with another SR in the SCell, and the periodic position of the SR is configured in SCell slot m. When slot n and slot m overlap in the time domain, and when the PUCCHs for the SRs configured in both slot n and slot m are valid, or when UCI multiplexing is performed in slot n (or slot m), the resulting multiplexed PUCCH is valid, then the UE may: expect the indicated slot from slot n and slot m as the PUCCH slot; or expect the default slot m (or slot n) as the PUCCH slot; or when there is an active SR, the UE transmits the SR PUCCH in PCell (or SCell) in slot n (or slot m).

[0105] In some embodiments, if a positive SR is present, the UE is expected to transmit an SR PUCCH in the PUCCH slot. In some embodiments, the SR in PCell slot n and the SR in SCell slot m can be associated with the same or different logical channel IDs. In some embodiments, a valid PUCCH refers to: except for the above-mentioned cases corresponding to an invalid PUCCH. In some embodiments, the PUCCH slot is configured based on RRC signaling or indicated by DCI signaling.

[0106] For Rule 4: Based on the above Rule 3, a further condition is added: when the SR configured in time slot n and time slot m are associated with the same logical channel ID, the base station can: indicate the time slot from time slot n and time slot m as the PUCCH time slot; or default time slot n (or time slot m) as the PUCCH time slot; or when there is an active SR, expect to transmit the SR PUCCH in PCell (or SCell) in time slot n (or time slot m).

[0107] In some implementations, if there is an aggressive SR, the base station is expected to transmit the SR PUCCH in the PUCCH slot.

[0108] In some embodiments, for the UE, based on the above rule 3, further conditions are added: when the SR configured in time slot n and time slot m are associated with the same logical channel ID, the UE may: expect the indicated time slot from time slot n and time slot m as the PUCCH time slot; or expect the default time slot m (or time slot n) as the PUCCH time slot; or when there is an active SR, the UE transmits the SR PUCCH in the PCell (or SCell) in time slot n (or time slot m).

[0109] In some embodiments, when there is an aggressive SR, the UE is expected to transmit an SR PUCCH in a PUCCH slot.

[0110] This disclosure describes methods, devices, and computer-readable media for wireless communications. This disclosure addresses the issues surrounding configuring and transmitting SRs. The methods, devices, and computer-readable media described in this disclosure can improve the performance of wireless communications by configuring and transmitting SRs, thereby improving efficiency and overall performance. The methods, devices, and computer-readable media described in this disclosure can improve the overall efficiency of wireless communication systems.

[0111] References throughout this specification to features, advantages, or similar language do not imply that all features and advantages that may be achieved with the present solution are intended to be included in or embodied in any single embodiment thereof. Rather, language referring to features and advantages should be understood to imply that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, discussions of features and advantages, and similar language throughout this specification, may, but do not necessarily, refer to the same embodiment.

[0112] Furthermore, the described features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be implemented without one or more of the specific features or advantages of a particular embodiment. In other cases, it will be recognized that additional features and advantages present in all embodiments of the present solution may not be present in certain embodiments.

Claims

1. A wireless communication method, comprising: A user terminal UE configured with a primary cell PCell and a secondary cell SCell determines a first scheduling request SR in the PCell, where a first logical channel identifier ID is associated with the first SR configured in the PCell; and Determining, by the UE, a second SR in the SCell; In response to an SR physical uplink control channel (PUCCH) being triggered by the first logical channel ID, the UE performs PUCCH cell switching between the PCell and the SCell to determine a timeslot for transmitting the SR PUCCH based on a PUCCH timeslot mode by: In response to the first logical channel ID being associated with an SR configured in a next earliest PUCCH slot indicated by the PUCCH slot pattern, selecting the next earliest PUCCH slot to transmit the SR PUCCH; or In response to a next PUCCH time slot in the PCell overlapping with a next PUCCH time slot in the SCell in the time domain, selecting the next PUCCH time slot in the PCell to transmit a next SR PUCCH repetition.

2. The method according to claim 1, further comprising: The UE determines that a second logical channel ID associated with a second SR configured in the SCell is the same as a first logical channel ID associated with a first SR configured in the PCell.

3. The method according to claim 1 or 2, wherein: The physical uplink control channel PUCCH SR PUCCH used to transmit SR is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE performs PUCCH cell switching between the PCell and the SCell to determine a time slot for transmitting the next SR PUCCH repetition based on a PUCCH time slot pattern by: In response to the first logical channel ID being associated with an SR configured in a next earliest PUCCH slot indicated by the PUCCH slot pattern, the next earliest PUCCH slot is selected to transmit the next SR PUCCH repetition.

4. The method according to claim 1 or 2, wherein: The SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE performs a PUCCH cell switching between the PCell and the SCell to determine a timeslot for transmitting the next SR PUCCH repetition according to at least one of the following: The PUCCH time slot mode configured between the PCell and the SCell, PUCCH format of the first SR PUCCH repetition, The number of symbols of the first SR PUCCH repetition, The index of the first symbol of the first SR PUCCH repetition, The periodic position of the SR opportunity, or Logical channel ID associated with the SR.

5. The method according to claim 4, wherein: The UE determines a time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot mode configured between the PCell and the SCell, the periodic position of the SR opportunity, and the logical channel ID associated with the SR.

6. The method according to claim 4, wherein: The UE determines a PUCCH time slot for transmitting the next SR PUCCH repetition according to a PUCCH time slot mode configured between the PCell and the SCell and a logical channel ID associated with the SR.

7. The method according to claim 4, wherein: The UE determines a time slot for transmitting the next SR PUCCH repetition according to a PUCCH time slot mode configured between the PCell and the SCell, the number of symbols of the first SR PUCCH repetition, and an index of the first symbol of the first SR PUCCH repetition.

8. The method according to claim 1 or 2, wherein: Configuring a first period position of the first SR in a PCell time slot; configuring a second period position of the second SR in the SCell time slot; and The PCell time slot and the SCell time slot do not overlap in the time domain.

9. The method according to claim 8, wherein: A first period of the first SR is the same as a second period of the second SR; and A first offset of the first SR is different from a second offset of the second SR.

10. The method according to claim 1 or 2, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; as well as In response to an invalid SR PUCCH in one of the PCell time slot and the SCell time slot, or in response to uplink control information (UCI) multiplexing performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being invalid, performing one of the following: not indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, Indicate the other of the PCell time slot and the SCell time slot as a PUCCH time slot, or The other of the PCell time slot and the SCell time slot is set as the PUCCH time slot by default. wherein the SR PUCCH is transmitted in the PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or The other of the PCell time slot and the SCell time slot is determined to transmit the next SR PUCCH repetition.

11. The method according to claim 1 or 2, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; In response to SR PUCCH being valid in both the PCell time slot and the SCell time slot, one of the following is performed: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; and In response to UCI multiplexing being performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being valid, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or Determine one of the PCell time slot and the SCell time slot to transmit the next SR PUCCH repetition.

12. The method according to claim 1 or 2, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; In response to SR PUCCH being valid in both the PCell time slot and the SCell time slot and being associated with the same logical channel ID, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; and In response to the SRs in both the PCell time slot and the SCell time slot being associated with the same logical channel ID, and UCI multiplexing being performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being valid, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or Determine one of the PCell time slot and the SCell time slot to transmit the next SR PUCCH repetition.

13. A wireless communication method, comprising: The base station configures a primary cell (PCell) and a secondary cell (SCell) for the user terminal (UE), where: A first scheduling request SR is configured in the PCell, where a first logical channel identifier ID is associated with the first SR configured in the PCell; and configuring a second SR in the SCell; In response to an SR physical uplink control channel (PUCCH) being triggered by the first logical channel ID, the UE performs PUCCH cell switching between the PCell and the SCell to determine a timeslot for transmitting the SR PUCCH based on a PUCCH timeslot mode by: In response to the first logical channel ID being associated with an SR configured in a next earliest PUCCH slot indicated by the PUCCH slot pattern, selecting the next earliest PUCCH slot to transmit the SR PUCCH; or In response to a next PUCCH time slot in the PCell overlapping with a next PUCCH time slot in the SCell in the time domain, selecting the next PUCCH time slot in the PCell to transmit a next SR PUCCH repetition.

14. The method according to claim 13, further comprising: The UE determines that a second logical channel ID associated with a second SR configured in the SCell is the same as a first logical channel ID associated with a first SR configured in the PCell.

15. The method according to claim 13 or 14, wherein: The physical uplink control channel PUCCH SR PUCCH used to transmit SR is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE performs PUCCH cell switching between the PCell and the SCell to determine a time slot for transmitting the next SR PUCCH repetition based on a PUCCH time slot pattern by: In response to the first logical channel ID being associated with an SR configured in a next earliest PUCCH slot indicated by the PUCCH slot pattern, the next earliest PUCCH slot is selected to transmit the next SR PUCCH repetition.

16. The method according to claim 13 or 14, wherein: The SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE performs a PUCCH cell switching between the PCell and the SCell to determine a timeslot for transmitting the next SR PUCCH repetition according to at least one of the following: The PUCCH time slot mode configured between the PCell and the SCell, PUCCH format of the first SR PUCCH repetition, The number of symbols of the first SR PUCCH repetition, The index of the first symbol of the first SR PUCCH repetition, The periodic position of the SR opportunity, or Logical channel ID associated with the SR.

17. The method according to claim 16, wherein: The UE determines a time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot mode configured between the PCell and the SCell, the periodic position of the SR opportunity, and the logical channel ID associated with the SR.

18. The method of claim 16, wherein: The UE determines a PUCCH time slot for transmitting the next SR PUCCH repetition according to a PUCCH time slot mode configured between the PCell and the SCell and a logical channel ID associated with the SR.

19. The method of claim 16, wherein: The UE determines a time slot for transmitting the next SR PUCCH repetition according to a PUCCH time slot mode configured between the PCell and the SCell, the number of symbols of the first SR PUCCH repetition, and an index of the first symbol of the first SR PUCCH repetition.

20. The method according to claim 13 or 14, wherein: Configuring a first period position of the first SR in a PCell time slot; configuring a second period position of the second SR in the SCell time slot; and The PCell time slot and the SCell time slot do not overlap in the time domain.

21. The method of claim 20, wherein: A first period of the first SR is the same as a second period of the second SR; and A first offset of the first SR is different from a second offset of the second SR.

22. The method according to claim 13 or 14, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; as well as In response to an invalid SR PUCCH in one of the PCell time slot and the SCell time slot, or in response to uplink control information (UCI) multiplexing performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being invalid, performing one of the following: not indicating one of the PCell time slot and the SCell time slot as a PUCCH time slot, Indicate the other of the PCell time slot and the SCell time slot as a PUCCH time slot, or The other of the PCell time slot and the SCell time slot is set as the PUCCH time slot by default. wherein the SR PUCCH is transmitted in the PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or The other of the PCell time slot and the SCell time slot is determined to transmit the next SR PUCCH repetition.

23. The method according to claim 13 or 14, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; In response to SR PUCCH being valid in both the PCell time slot and the SCell time slot, one of the following is performed: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; and In response to UCI multiplexing being performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being valid, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or Determine one of the PCell time slot and the SCell time slot to transmit the next SR PUCCH repetition.

24. The method according to claim 13 or 14, wherein: Configuring a first period position of the first SR in a PCell time slot; Configuring a second period position of the second SR in the SCell time slot; The PCell time slot and the SCell time slot overlap in the time domain; In response to SR PUCCH being valid in both the PCell time slot and the SCell time slot and being associated with the same logical channel ID, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; and In response to the SRs in both the PCell time slot and the SCell time slot being associated with the same logical channel ID, and UCI multiplexing being performed in one of the PCell time slot and the SCell time slot and the resulting multiplexed PUCCH including the SR being valid, performing one of the following: Indicate one of the PCell time slot and the SCell time slot as a PUCCH time slot, or Defaulting one of the PCell time slot and the SCell time slot as a PUCCH time slot; Wherein, the SR PUCCH is configured with a repetition factor N, where N is a positive integer; and In response to the repetition factor N being greater than one, the UE determines a time slot for transmitting the next SR PUCCH repetition according to at least one of the following: Determine the time slot for transmitting the next SR PUCCH repetition based on the PUCCH time slot pattern, or Determine one of the PCell time slot and the SCell time slot to transmit the next SR PUCCH repetition.

25. A wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory and execute the method according to any one of claims 1 to 24.

26. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 24.

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