Method, apparatus and system for configuring timing advance information in wireless communication

Abstract

A method, apparatus, and system for configuring timing advance information in wireless communication is disclosed. In one embodiment, a method performed by a wireless communication device is disclosed. The method includes: determining a first set of beam indications, and a second set of timing advance command (TAC) values, wherein each beam indication in the first set is associated with a corresponding TAC value in the second set; and obtaining an indication including a TAC value from the second set to indicate an uplink transmission to a wireless communication node.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications, and more particularly, to methods, apparatus, and systems for configuring timing advance information in wireless communications. Background Art

[0002] In wireless communications following current specifications, such as in the fifth generation (5G) new radio (NR) system, a timing advance (TA) mechanism is used to ensure that uplink transmissions of different terminals in the same serving cell are orthogonal to avoid intra-cell interference. Therefore, the base station (BS) requires that uplink signals from different terminals are roughly aligned when they arrive at the BS, or that the uplink signals received by the BS can all fall within the cyclic prefix (CP) in the time domain.

[0003] In the existing system, uplink carriers are divided into different TA groups (TAGs) according to different service cells. The uplink carriers of the same TAG use the same TA information, while the uplink carriers of different TAGs use different TA information. Therefore, uplink transmissions on all uplink beams in the same service cell will use the same timing advance command to time-align the uplink transmission signals. However, a service cell may include multiple transmit / receive points (TRPs); a TRP may include multiple antenna panels; and an antenna panel may include multiple beams. Similarly, a terminal or user equipment (UE) may include multiple antenna panels; and an antenna panel may include multiple beams. Due to the distant geographical locations of the TRPs and / or different panel directions, the transmission paths experienced by beams corresponding to different uplink carriers in the same TAG may be very different. Using the same timing advance value will cause some uplink beams to arrive at the base station side at a time exceeding the CP, which will worsen the uplink reception interference.

[0004] Therefore, existing systems and methods for configuring timing advance information in wireless communications are not entirely satisfactory. Summary of the invention

[0005] The exemplary embodiments disclosed herein are intended to solve problems related to one or more difficulties existing in the prior art, and provide additional features that will become apparent by reference to the following detailed description when combined with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art who have read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0006] In one embodiment, a method performed by a wireless communication device is disclosed. The method includes: determining a first set of beam indications, and a second set of timing advance command (TAC) values, wherein each beam indication in the first set is associated with a corresponding TAC value in the second set; and obtaining an indication including a TAC value from the second set for indicating an uplink transmission to a wireless communication node.

[0007] In another embodiment, a method performed by a wireless communication device is disclosed. The method includes: receiving a first TAC value from a wireless communication node, the first TAC value being used to schedule a previous uplink transmission of the wireless communication device in a previous time slot; receiving a second TAC value from the wireless communication node, the second TAC value being used to schedule a subsequent uplink transmission of the wireless communication device in a subsequent time slot, wherein: the first TAC value is different from the second TAC value, the previous time slot and the subsequent time slot are two adjacent time slots, and have an overlapping time slot portion.

[0008] In yet another embodiment, a method performed by a wireless communication node is disclosed. The method includes: configuring a first set of beam indications and a second set of timing advance command (TAC) values ​​for a wireless communication device, wherein each beam indication in the first set is associated with a corresponding TAC value in the second set; and generating an indication including a TAC value from the second set for an uplink transmission of the wireless communication device.

[0009] In another embodiment, a method performed by a wireless communication node is disclosed. The method includes: sending a first TAC value to a wireless communication device, the first TAC value being used to schedule a previous uplink transmission of the wireless communication device in a previous time slot; sending a second TAC value to the wireless communication device, the second TAC value being used to schedule a next uplink transmission of the wireless communication device in a next time slot, wherein: the first TAC value is different from the second TAC value, the previous time slot and the next time slot are two adjacent time slots, and have an overlapping time slot portion.

[0010] In another embodiment, a wireless communication device is disclosed, which is configured to perform the methods disclosed in some embodiments. In yet another embodiment, a wireless communication node is disclosed, which is configured to perform the methods disclosed in some embodiments. In another embodiment, a non-transitory computer-readable medium is disclosed, on which computer-executable instructions for performing the methods disclosed in a certain embodiment are stored. The above and other aspects and their embodiments will be described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Various exemplary embodiments of the present disclosure are described in detail below with reference to the following drawings. The drawings are provided for illustrative purposes only and only describe exemplary embodiments of the present disclosure to facilitate the reader's understanding of the present disclosure. Therefore, the drawings should not be regarded as limiting the breadth, scope or applicability of the present disclosure. It should be noted that for clarity and ease of description, these drawings are not necessarily drawn to scale.

[0012] Figure 1 An exemplary communication network is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure.

[0013] Figure 2 A block diagram of a user equipment (UE) according to some embodiments of the present disclosure is shown.

[0014] Figure 3 A flowchart of a method for determining TA information performed by a UE according to some embodiments of the present disclosure is shown.

[0015] Figure 4 A block diagram of a base station (BS) according to some embodiments of the present disclosure is shown.

[0016] Figure 5 A flow chart of a method performed by a BS for configuring timing advance (TA) information according to some embodiments of the present disclosure is shown.

[0017] Figure 6 An exemplary method for indicating one or more beam indications according to some embodiments of the present disclosure is shown.

[0018] Figure 7 Another exemplary method for indicating one or more beam indications according to some embodiments of the present invention is shown.

[0019] Figure 8 An exemplary signaling framework for indicating TA information according to some embodiments of the present disclosure is shown.

[0020] Fig. 9 An exemplary uplink transmission conflict caused by TA modification according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings to enable those of ordinary skill in the art to make and use the present disclosure. It is obvious to those of ordinary skill in the art that, after reading the present disclosure, various changes or modifications can be made to the examples described herein without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the specific order and / or hierarchy of the steps in the method disclosed herein are merely exemplary methods. Based on design preferences, the specific order or hierarchy of the steps of the disclosed method or process can be rearranged while remaining within the scope of the present disclosure. Therefore, it should be understood by those of ordinary skill in the art that the methods and techniques disclosed herein present various steps or actions in a sample order, and unless otherwise expressly stated, the present disclosure is not limited to the specific order or hierarchy presented.

[0022] A typical wireless communication network includes one or more base stations (commonly referred to as "BS"), each of which provides geographical wireless coverage, and one or more wireless user equipment terminals (commonly referred to as "UE") that can send and receive data within the wireless coverage area. The wireless coverage area is called a cell or service cell, where the wireless network can be distributed over multiple cells. The present teaching provides a method and system for dividing a cell into multiple micro service areas to achieve precise management of wireless resources.

[0023] The present teaching discloses a method for further distinguishing the timing advance value of uplink transmission under different beams, so that the timing advance value can have a one-to-one mapping with the beam indication. Different timing advance values ​​are utilized for uplink transmission on different uplink beams in the same serving cell or the same TAG. In one embodiment, the beam state of the uplink signal can be utilized to distinguish and indicate the timing advance information of different uplink beams, thereby adjusting the timing advance (TA) of different uplink beams and solving the mutual interference problem between uplink reception. According to various embodiments, the beam state can be: sounding reference signal (SRS) resource set; spatial relationship information; quasi co-location (QCL) state; transmission configuration indicator (TCI) state; control resource set (CORESET); control resource set (CORESET) pool; non-zero power channel state information reference signal (NZP-CSI-RS) resource set; SRS port; antenna port; antenna panel; beam group, etc. The TA value corresponds to the adjustment value indicated in the TA command (TAC). In the present teaching, the terms "beam" and "beam state" will be used interchangeably to refer to a transmission beam; the terms "TA value" and "TAC value" will be used interchangeably to refer to a value of a timing advance.

[0024] The method disclosed in the present teachings may be implemented in a wireless communication network, wherein a BS and a UE may communicate with each other via a communication link (e.g., via a downlink wireless transmission from the BS to the UE or via an uplink wireless transmission from the UE to the BS). In various embodiments, the BS in the present disclosure may be referred to as a network side, and may include or be implemented as a next generation Node B (gNB), an E-UTRAN Node B (eNB), a core network, a transmit / receive point (TRP), an access point (AP), etc.; and the UE in the present disclosure may be referred to as a terminal, and may include, or may be implemented as a mobile station (MS), a station (STA), etc. According to various embodiments of the present disclosure, the BS and the UE may be described herein as non-limiting examples of a "wireless communication node" and a "wireless communication device", respectively, which may practice the methods disclosed herein and may be capable of wireless and / or wired communications.

[0025] Figure 1 1 shows an exemplary communication network 100 in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure. Figure 1 As shown, the exemplary communication network 100 includes a TAG 101 corresponding to a serving cell. The serving cell includes two TRPs: TRP1 121 and TRP2 122, each of which can receive uplink transmissions from a UE 110 in the serving cell. Figure 1 As shown, UE 110 has two antenna panels with different orientations, where each antenna panel has three beams. Figure 1 The left panel of UE 110 in FIG. 1 includes beams 141, 142, 143; and Figure 1 The right panel of UE 110 in FIG. 1 includes beams 144, 145, and 146. Due to the panels and beam directions of TRPs 121, 122 and UE 110, as well as the positions of barriers between TRPs 121, 122 and UE 110, a subset of uplink beams for UE 110 may arrive at TRPs 121, 122. For example, uplink beams 142, 143, and 145 may carry uplink transmissions to TRP1 121; and uplink beam 144 may carry uplink transmissions to TRP2 122. However, the transmission paths experienced by these beams 142, 143, 144, and 145 corresponding to different uplink carriers in the same TAG 101 are very different, as shown in FIG. 1 . Figure 1 Therefore, different TA values ​​will be utilized for uplink transmission on these different uplink beams 142, 143, 144, 145 in the same serving cell to avoid mutual interference between uplink receptions.

[0026] Figure 21 shows a block diagram of a UE 200 according to some embodiments of the present disclosure. The UE 200 is an example of a device that can be configured to implement the various methods described herein. Figure 2 As shown, UE 200 includes a housing 240, which contains a system clock 202, a processor 204, a memory 206, a transceiver 210 including a transmitter 212 and a receiver 214, a power module 208, a beam and TA relationship determiner 220, an indication analyzer 222, a command analyzer 224 and an uplink data generator 226.

[0027] In this embodiment, the system clock 202 provides timing signals to the processor 204 for controlling the timing of all operations of the UE 200. The processor 204 controls the general operation of the UE 200 and may include one or more processing circuits or modules such as a central processing unit (CPU) and / or a general-purpose microprocessor, a microcontroller, a digital signal processor (DSP), a field programmable gate array (FPGA), a programmable logic device (PLD), a controller, a state machine, a gating logic, any combination of discrete hardware components, a dedicated hardware finite state machine, or any other suitable circuit, device and / or structure that can perform calculations or other operations on data.

[0028] The memory 206, which may include a read-only memory (ROM) and a random access memory (RAM), may provide instructions and data to the processor 204. A portion of the memory 206 may also include a non-volatile random access memory (NVRAM). The processor 204 typically performs logic and arithmetic operations based on program instructions stored in the memory 206. The instructions (also referred to as software) stored in the memory 206 may be executed by the processor 204 to perform the methods described herein. The processor 204 and the memory 206 together form a processing system that stores and executes software. As used herein, "software" refers to any type of instruction, whether referred to as software, firmware, middleware, microcode, etc., which can configure a machine or device to perform one or more desired functions or processes. Instructions may include code (e.g., in source code format, binary code format, executable code format, or any other suitable code format). When executed by one or more processors, these instructions cause the processing system to perform the various functions described herein.

[0029] The transceiver 210 including a transmitter 212 and a receiver 214 allows the UE 200 to send data to and receive data from a remote device (e.g., a UE or another BS). The antenna 250 is typically attached to the housing 240 and electrically coupled to the transceiver 210. In various embodiments, the UE 200 includes (not shown) multiple transmitters, multiple receivers, and multiple transceivers. In one embodiment, the antenna 250 is replaced by a multi-antenna array 250, which can form multiple beams, each beam pointing in a different direction. The transmitter 212 can be configured to wirelessly transmit data packets with different data packet types or functions, which are generated by the processor 204. Similarly, the receiver 214 is configured to receive data packets with different data packet types or functions, and the processor 204 is configured to process data packets of multiple different data packet types. For example, the processor 204 can be configured to determine the type of data packet and process the data packet and / or the field of the data packet accordingly.

[0030] In this example, the beam and TA relationship determiner 220 can determine a first set of beam indications and a second set of timing advance command (TAC) values, for example, based on a command or signaling from a BS. Each beam indication in the first set is associated with a corresponding TAC value in the second set. In one embodiment, each beam indication includes at least one of the following: a sounding reference signal (SRS) resource set; spatial relationship information; quasi co-location (QCL) state; transmission configuration indicator (TCI) state; control resource set (CORESET); control resource set (CORESET) pool; non-zero power channel state information reference signal (NZP-CSI-RS) resource set; SRS port; and antenna port. In another embodiment, each beam indication includes at least one of an antenna panel number and a beam group. In one example, a beam group includes a group of beams sent to different transmit / receive points (TRPs) in the same serving cell. In another example, a beam group includes a group of beams transmitted in different serving cells.

[0031] In this example, the indication analyzer 222 may obtain an indication including a TAC value from a second set for an uplink transmission to the BS. In one embodiment, the indication indicates a TAC value and a TA indication associated with the TAC value. The TA indication may include at least one of the following: a TA group (TAG) associated with the TAC value, and a beam indication associated with the TAC value. In one embodiment, when the indication includes a beam indication, the TA indication includes a beam indication associated with the TAC value. In another embodiment, when the indication does not include a beam indication, the TA indication includes a TAG associated with the TAC value. According to various embodiments, the TAC value indicates at least one of the following: an absolute TAC value for an uplink transmission on a beam having a beam indication associated with the TAC value; and a relative TAC value for an uplink transmission on the beam compared to a previous uplink transmission of the UE.

[0032] In this example, the command analyzer 224 may receive a command regarding uplink transmission of the UE from the BS via the receiver 214. In one embodiment, the command analyzer 224 may receive a first command from the BS via the receiver 214, the first command indicating: a first set of beam indications, a second set of TAC values, or a relationship between the two sets; and then, receive a second command from the BS via the receiver 214, the second command indicating an indication for uplink transmission of the UE.

[0033] In another embodiment, the command analyzer 224 may receive a first command from the BS via the receiver 214, the first command indicating: a first set of beam indications, a second set of TAC values, or a relationship between the two sets. Then, the command analyzer 224 may receive a second command from the BS via the receiver 214, the second command activating: a first subset of beam indications in the first set, and a second subset of TAC values ​​in the second set, wherein each beam in the first subset is indicated to be associated with a corresponding TAC value in the second subset. Then, the command analyzer 224 may receive a third command from the BS via the receiver 214, the third command indicating an indication for uplink transmission of the UE, wherein the TAC value in the indication is from the second subset. The command analyzer 224 may analyze these commands and provide the analysis results to the beam and TA relationship determiner 220, the indication analyzer 222 and / or the uplink data generator 226. The relationship between the two sets may be configured based on at least one of: a radio resource control (RRC) in the first command; a MAC control element (MAC CE) in the second command; and downlink control information (DCI) in the third command.

[0034] In this example, the uplink data generator 226 can determine a transmission time for an uplink transmission based on the TAC value; and at the transmission time, send the uplink transmission to the BS on a beam corresponding to a beam indication associated with the TAC value. In one embodiment, the uplink transmission includes transmission of at least one of: a physical uplink control channel (PUCCH); a physical uplink shared channel (PUSCH); and a sounding reference signal (SRS).

[0035] In one embodiment, the UE 200 may receive two TAC values ​​from the BS, for example, by means of the indication analyzer 222 and / or the command analyzer 224, the two TAC values ​​including: a first TAC value for scheduling a previous uplink transmission of the UE in a previous time slot, and a second TAC value for scheduling a subsequent uplink transmission of the UE in a subsequent time slot. The first TAC value is different from the second TAC value. The previous time slot and the subsequent time slot are two adjacent time slots and have overlapping time slot portions.

[0036] In one embodiment, the uplink data generator 226 may send all the data of the subsequent uplink transmission to the BS in the subsequent time slot. The uplink data generator 226 may send part of the data of the previous uplink transmission to the BS in the previous time slot, but does not send the data of the previous uplink transmission in the overlapping time slot portion of the two time slots.

[0037] In another embodiment, the previous uplink transmission includes PUCCH or SRS in the overlapping time slot portion. In this case, the uplink data generator 226 can send all the data of the previous uplink transmission to the BS in the previous time slot, but does not send any data of the next uplink transmission.

[0038] In yet another embodiment, the previous uplink transmission includes a PUSCH in the overlapping time slot portion. In this case, the uplink data generator 226 may send all data of the subsequent uplink transmission to the BS in the subsequent time slot, but does not send any data of the previous uplink transmission.

[0039] The power module 208 may include a power source such as one or more batteries and a power regulator to provide power to the Figure 2 Each of the above modules in provides regulated power. In some embodiments, if UE 200 is coupled to a dedicated external power source (eg, a wall outlet), power module 208 may include a transformer and a power conditioner.

[0040] The various modules discussed above are coupled together via a bus system 230. The bus system 230 may include a data bus, and other components other than the data bus, such as a power bus, a control signal bus, and / or a status signal bus. It should be understood that the modules of the UE 200 may be operatively coupled to each other using any suitable technology and medium.

[0041] although Figure 2 Many separate modules or components are shown in FIG. 1 , but a person skilled in the art will appreciate that one or more modules may be combined or implemented together. For example, the processor 204 may implement not only the functions described above regarding the processor 204, but also the functions described above regarding the beam and TA relationship determiner 220. On the contrary, Figure 2 Each module shown may be implemented using multiple individual components or elements.

[0042] Figure 3 UE (eg Figure 2 Flowchart of a method 300 for determining TA information for uplink transmission performed by a UE 200 in FIG. 1 . At operation 302, the UE determines a first set of beam indications and a second set of timing advance command (TAC) values ​​associated with the beam indications. At operation 304, the UE obtains an indication from the BS including a TAC value from the second set. At operation 306, the UE determines a transmission time for an uplink transmission to the BS based on the TAC value. At operation 308, at the transmission time, the UE sends an uplink transmission to the BS on a beam corresponding to the beam indication associated with the TAC value. Figure 3 The order of operations shown may be changed according to different embodiments of the present disclosure.

[0043] Figure 4 1 shows a block diagram of a base station (BS) 400 according to some embodiments of the present disclosure. BS 400 is an example of a device that can be configured to implement the various methods described herein. Figure 4 As shown, BS 400 includes a housing 440, which contains a system clock 402, a processor 404, a memory 406, a transceiver 410 including a transmitter 412 and a receiver 414, a power module 408, a beam and TA relationship configurator 420, an indication generator 422, a command generator 424 and an uplink data analyzer 426.

[0044] In this embodiment, the system clock 402, processor 404, memory 406, transceiver 410, and power module 408 operate in a manner similar to the system clock 202, processor 204, memory 206, transceiver 210, and power module 208 in UE 200. Antenna 250 or multiple antenna array 250 is typically attached to housing 240 and electrically coupled to transceiver 210.

[0045] In wireless communication, BS 400 is associated with at least one cell. In one embodiment, the beam and TA relationship configurator 420 in BS 400 can configure a first set of beam indications and a second set of timing advance command (TAC) values ​​for the UE. Each beam indication in the first set is associated with a corresponding TAC value in the second set. In one embodiment, each beam indication includes at least one of the following: a sounding reference signal (SRS) resource set; spatial relationship information (SRI); a quasi co-location (QCL) state; a transmission configuration indicator (TCI) state; a control resource set (CORESET); a control resource set (CORESET) pool; a non-zero power channel state information reference signal (NZP-CSI-RS) resource set; an SRS port; and an antenna port. In another embodiment, each beam indication includes at least one: an antenna panel number and a beam group. In one example, a beam group includes a group of beams sent to different transmit / receive points (TRPs) in the same serving cell. In another example, a beam group includes a group of beams sent in different serving cells.

[0046] In this example, the indication generator 422 may generate an indication including a TAC value from a second set for an uplink transmission of the UE. In one embodiment, the indication indicates a TAC value, and a TA indication associated with the TAC value. The TA indication may include at least one of the following: a TA group (TAG) associated with the TAC value, and a beam indication associated with the TAC value. In one embodiment, when the indication includes a beam indication, the TA indication includes a beam indication associated with the TAC value. In another embodiment, when the indication does not include a beam indication, the TA indication includes a TAG associated with the TAC value. According to various embodiments, the TAC value indicates at least one of the following: an absolute TAC value for an uplink transmission on a beam having a beam indication associated with a TAC value; and a relative TAC value for an uplink transmission on the beam compared to a previous uplink transmission of the UE.

[0047] In this example, the command generator 424 may obtain the beam and TA relationship configured by the beam and TA relationship configurator 420, and the indication generated by the indication generator 422. The command generator 424 may generate a command regarding uplink transmission of the UE, and send the command to the UE via the transmitter 412. In one embodiment, the command generator 424 may send a first command to the UE via the transmitter 412, the first command indicating: a first set of beam indications, a second set of TAC values, or a relationship between the two sets; and then, send a second command to the UE via the transmitter 412, the second command indicating an indication of uplink transmission of the UE.

[0048] In another embodiment, the command generator 424 may send a first command to the UE via the transmitter 412, the first command indicating: a first set of beam indications, a second set of TAC values, or a relationship between the two sets. Then, the command generator 424 may send a second command to the UE via the transmitter 412, the second command activating: a first subset of beam indications in the first set, and a second subset of TAC values ​​in the second set, wherein each beam indication in the first subset is associated with a corresponding TAC value in the second subset. Then, the command generator 424 may send a third command to the UE via the transmitter 412, the third command indicating an indication of an uplink transmission of the UE, wherein the TAC value in the indication is from the second subset. The relationship between the two sets may be configured based on at least one of: a radio resource control (RRC) in the first command; a MAC control element (MAC CE) in the second command; and downlink control information (DCI) in the third command.

[0049] In this example, uplink data analyzer 426 may receive an uplink transmission from a UE via receiver 414. The uplink transmission is transmitted on a beam corresponding to a beam indication associated with a TAC value and is sent at a time determined based on the TAC value. In one embodiment, the uplink transmission includes transmission of at least one of: a physical uplink control channel (PUCCH); a physical uplink shared channel (PUSCH); and a sounding reference signal (SRS).

[0050] In one embodiment, BS 400 may send two TAC values ​​to UE, for example, through indication generator 422 and command generator 424, the two TAC values ​​including: a first TAC value for scheduling a previous uplink transmission of UE in a previous time slot, and a second TAC value for scheduling a next uplink transmission of UE in a next time slot. The first TAC value is different from the second TAC value. The previous time slot and the next time slot are two adjacent time slots and have overlapping time slot portions.

[0051] In one embodiment, the uplink data analyzer 426 may receive all data of the subsequent uplink transmission in the subsequent time slot from the UE. The uplink data analyzer 426 may receive partial data of the previous uplink transmission in the previous time slot from the UE, but may not receive data of the previous uplink transmission in the overlapping time slot portion of the two time slots.

[0052] In another embodiment, the previous uplink transmission includes uplink control information (UCI) or sounding reference signal (SRS) in the overlapping time slot portion. In this case, the uplink data analyzer 426 can receive all data of the previous uplink transmission in the previous time slot from the UE, but will not receive any data of the subsequent uplink transmission.

[0053] In yet another embodiment, the previous uplink transmission does not include UCI or SRS in the overlapping time slot portion. In this case, the uplink data analyzer 426 can receive all data of the subsequent uplink transmission in the subsequent time slot from the UE, but does not receive any data of the previous uplink transmission.

[0054] The power module 408 may include a power source such as one or more batteries and a power regulator to provide power to the Figure 4 Each of the above modules in provides regulated power. In some embodiments, if BS 400 is coupled to a dedicated external power source (eg, a wall outlet), power module 408 may include a transformer and a power conditioner.

[0055] The various modules discussed above are coupled together via a bus system 430. The bus system 430 may include a data bus, and other components other than the data bus, such as a power bus, a control signal bus, and / or a status signal bus. It should be understood that the modules of the BS 400 may be operatively coupled to each other using any suitable technology and medium.

[0056] although Figure 4 Many separate modules or components are shown in FIG. 4 , but a person skilled in the art will appreciate that one or more modules may be combined or implemented together. For example, the processor 404 may implement not only the functions described above regarding the processor 404, but also the functions described above regarding the beam and TA relationship configurator 420. On the contrary, Figure 4 Each module shown may be implemented using multiple individual components or elements.

[0057] Figure 5 BS (eg Figure 44. The BS of claim 1 , wherein the BS 400 of claim 10 is a flowchart of a method 500 for configuring TA information performed by a BS 400 of claim 10 . At operation 502, the BS configures a first set of beam indications for a UE, and a second set of timing advance command (TAC) values ​​associated with the beam indications. At operation 504, the BS generates an indication including a TAC value from the second set for an uplink transmission of the UE. At operation 506, the BS sends a command indicating the indication to the UE. At operation 508, the BS receives an uplink transmission from the UE, the uplink transmission being sent at a time based on the TAC value and at a time corresponding to a beam of the beam indication associated with the TAC value. Figure 5 The order of operations shown may be changed according to different embodiments of the present disclosure.

[0058] Different embodiments of the present disclosure will be described in detail below. It should be noted that the features of the embodiments and examples in the present disclosure can be combined with each other in any way without conflict.

[0059] In one embodiment, the TA information includes two types of information: TA TAG / indication and TA value. The TA indication may include a TAG, and the TA value may correspond to the adjustment value indicated in the TAC. According to different uplink signal transmission scenarios, the TA information may be divided into the following two types.

[0060] According to various embodiments, the TA information indication method disclosed in this article can be applied to the beams used by all uplink physical layer channels except PRACH, for example, the physical uplink shared channel (PUSCH), the physical uplink control channel (PUCCH), and the sounding reference signal (SRS).

[0061] In order to implement TA information indication at uplink transmission beam level (beam specific), the signaling framework for TA indication of the target beam can be designed according to any of the following two methods.

[0062] In the first method 600, a two-tier architecture is used, such as Figure 6 As shown. The first signaling or command may be used to indicate the status of multiple uplink beams, forming a beam status pool 610. The first signaling or command may be a radio resource control (RRC) or a MAC CE. The beam status may refer to a beam indication, which is one of the following: SRS resource set, SRI, QCL status, TCI status, CORESET, CORESET pool, NZP-CSI-RS resource set, antenna panel, beam group, SRS port, or antenna port. Each beam in the pool 610 is associated with a TA value, which is also indicated in the first signaling or command. Based on this, a second signaling or command may be used to indicate a specific status corresponding to a target beam or a target beam group 620, such as Figure 6The second signaling or command may be MAC CE or downlink control information (DCI).

[0063] In the second method 700, a three-tier architecture is used, such as Figure 7 As shown. The first signaling or command may be used to indicate the status of multiple uplink beams, forming a beam status pool 710. The beam status may refer to the beam indication as discussed above in the first method 600. Each beam in the pool 710 is associated with a TA value, which is also indicated in the first signaling or command. In the second method 700, the first signaling or command may be an RRC. Then, the value of the second signaling or command may be used to activate a subset 720 of the states in the pool 710, and their associated TA values. In the second method 700, the second signaling or command may be a MACCE. Finally, the third signaling or command may be used to indicate a specific state corresponding to a target beam or target beam group 730, such as Figure 7 The third signaling or command may be DCI.

[0064] Figure 8 An exemplary signaling framework 800 for indicating beam-specific TA information according to some embodiments of the present disclosure is shown. In various embodiments of the present teachings, a beam state is equivalent to a beam. In various embodiments of the present teachings, a beam state may be at least one of: an SRS resource set, an SRI, a QCL state, a TCI state, a CORESET, a CORESET pool, a NZP-CSI-RS resource set, an antenna panel, a beam group, an SRS port, or an antenna port.

[0065] In various embodiments of the present teachings, the SRI indication includes a spatial relationship of one or more source reference signals (SRS) and is used to associate the same or quasi-co-located spatial relationship between: (a) a target channel (such as PUSCH / PUCCH) or reference signal (SRS), and (b) a reference RS.

[0066] In various embodiments of the present teachings, the QCL state is a quasi-co-location type of one or more source reference signals. Specifically, the "quasi-co-location type" includes one of the following: QCL type A, QCL type D. QCL type A means that the target channel or reference signal has the same demodulation parameters as the source reference signal (for example, Doppler shift, Doppler spread, average delay, delay spread and other parameters). QCL type D means that the target channel or reference signal has the same receive spatial filter as the source reference signal, which also means that the target channel or reference signal has the same receive beam as the source reference signal.

[0067] In the following description, a wireless communication device may refer to a UE, a mobile device, an access terminal, a user terminal, a user station, a user unit, a mobile station, a remote station, a remote terminal, a user agent, a user equipment, etc. In the following description, a wireless communication node may refer to a base station, an AP (access point), a node B, an RNC (radio network controller) or an eNB (evolved node B), a BSC (base station controller), a BTS (base transceiver station), a BS (base station), a TF (transceiver function), a wireless circuit router, a wireless transceiver, a basic service unit, an extended service unit, an RBS (radio base station), etc.

[0068] In a first embodiment, a TA information indication method based on a PUSCH transmission beam is disclosed. The TA information indication method for a PUSCH transmission beam can be applied to a wireless communication device. The method includes: receiving timing advance (TA) information for a PUSCH transmission beam sent by a wireless communication node, and determining or adjusting a TAC value of an uplink PUSCH transmission beam based on the received TA information.

[0069] In this embodiment, the TA information corresponds to a PUSCH transmission beam or a beam group. When the wireless communication device receives the TA information of the PUSCH transmission beam, it uses the TA information on the transmission beam. The TA information includes a selected TA indication and a selected TAC value corresponding to the selected TA indication. The TA indication has a one-to-one mapping relationship with the TAC value. The TA indication includes at least one of a TAG and a beam indication. The beam indication can be obtained by an indication command from a wireless communication node.

[0070] In addition, the method may include at least one of the following: (a) when the beam indication is included in the signaling, the TA indication is the beam indication; and (b) when the beam indication is not included in the signaling, the TA indication is the TAG.

[0071] In addition, the beam indication includes at least one of the following: (a) an uplink transmission beam indication, which includes at least one of the following: SRI, SRS resource set; (b) a unified downlink transmission beam indication, which includes at least one of the following: QCL state index, TCI state index, CORESET, CORESET pool, NZP-CSI-RS resource set; (c) an uplink transmission beam group indication, which includes at least one of the following: antenna panel, beam group; (d) a port indication, which includes at least one of the following: SRS port, antenna port.

[0072] The TA information indication command may include at least one of the following: RRC, MAC CE, RAR MAC and physical layer signaling. The physical layer signaling may include at least one of the following: PDCCH, DCI.

[0073] In addition, the signaling indication method includes at least one of a two-step indication and a three-step indication. The two-step indication includes: the wireless communication node sends a first command to the wireless communication device to configure beam indications of multiple uplink transmission beams to form a beam state pool; and the wireless communication node sends a second command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes at least one of the following: RRC, MAC CE; and the second command includes at least one of the following: MAC CE, DCI.

[0074] The three-step indication includes the following contents. First, the wireless communication node sends a first command to the wireless communication device to indicate beam indications of multiple uplink transmission beams to form a beam state pool. Then, the wireless communication node sends a second command to the wireless communication device to activate some beam indications in the pool. Finally, the wireless communication node sends a third command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes at least one of the following: RRC; the second command includes at least one of the following: MAC CE; and the third command includes DCI.

[0075] In various embodiments of the present teachings, the TA value includes at least one of: an absolute TAC value of the PUSCH transmission beam; and a relative TAC value of the PUSCH transmission beam compared to a previous uplink transmission.

[0076] In a second embodiment, a TA information indication method based on a PUCCH transmission beam is disclosed. The TA information indication method for a PUCCH transmission beam can be applied to a wireless communication device. The method includes: receiving timing advance (TA) information for a PUCCH transmission beam sent by a wireless communication node, and determining or adjusting a TAC value of an uplink PUCCH transmission beam based on the received TA information.

[0077] In this embodiment, the TA information corresponds to a PUCCH transmission beam or a beam group. When the wireless communication device receives the TA information of the PUCCH transmission beam, it uses the TA information on the transmission beam. The TA information includes a selected TA indication and a selected TAC value corresponding to the selected TA indication. The TA indication has a one-to-one mapping relationship with the TAC value. The TA indication includes at least one of a TAG and a beam indication. The beam indication can be obtained by an indication command from a wireless communication node.

[0078] In addition, the method may include at least one of the following: (a) when the beam indication is included in the command, the TA indication is the beam indication; and (b) when the beam indication is not included in the command, the TA indication is the TAG.

[0079] In addition, the beam indication includes at least one of the following: (a) an uplink transmission beam indication, which includes at least one of the following: SRI, SRS resource set; (b) a downlink transmission beam indication, which includes at least one of the following: QCL state, TCI state, CORESET, CORESET pool, NZP-CSI-RS resource set; (c) an uplink transmission beam group indication, which includes at least one of the following: antenna panel, beam group; (d) a port indication, which includes at least one of the following: SRS port, antenna port.

[0080] The TA information indication command may include at least one of the following: RRC, MAC CE, RAR MAC and physical layer signaling. The physical layer signaling may include at least one of the following: PDCCH and DCI.

[0081] In addition, the command indication method includes at least one of a two-step indication and a three-step indication. The two-step indication includes: the wireless communication node sends a first command to the wireless communication device to configure beam indications of multiple uplink transmission beams to form a beam state pool; and the wireless communication node sends a second command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes at least one of the following: RRC, MAC CE; and the second command includes at least one of the following: MAC CE, DCI.

[0082] The three-step indication includes the following contents. First, the wireless communication node sends a first command to the wireless communication device to indicate beam indications of multiple uplink transmission beams to form a beam state pool. Then, the wireless communication node sends a second command to the wireless communication device to activate some beam indications in the pool. Finally, the wireless communication node sends a third command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes RRC; the second command includes MAC CE; and the third command includes DCI.

[0083] In various embodiments of the present teachings, the TAC value includes at least one of: an absolute TAC value of the PUCCH transmission beam; and a relative TAC value of the PUCCH transmission beam compared to a previous uplink transmission.

[0084] In a third embodiment, a TA information indication method based on an SRS transmission beam is disclosed. The TA information indication method for an SRS transmission beam can be applied to a wireless communication device. The method includes: receiving timing advance (TA) information for an SRS transmission beam sent by a wireless communication node, and determining or adjusting a TAC value of an uplink SRS transmission beam based on the received TA information.

[0085] In this embodiment, the TA information corresponds to an SRS transmission beam or a beam group. When the wireless communication device receives the TA information of the SRS transmission beam, it uses the TA information on the transmission beam. The TA information includes a selected TA indication and a selected TAC value corresponding to the selected TA indication. The TA indication has a one-to-one mapping relationship with the TA value. The TA indication includes at least one of a TAG and a beam indication. The beam indication can be obtained by an indication command from a wireless communication node.

[0086] In addition, the method may include at least one of the following: (a) when the beam indication is included in the command, the TA indication is the beam indication; and (b) when the beam indication is not included in the command, the TA indication is the TAG.

[0087] In addition, the beam indication includes at least one of the following: (a) an uplink transmission beam indication, which includes at least one of the following: SRI, SRS resource set; (b) a downlink transmission beam indication, which includes at least one of the following: QCL state, TCI state, CORESET, CORESET pool, NZP-CSI-RS resource set; (c) an uplink transmission beam group indication, which includes at least one of the following: antenna panel, beam group; (d) a port indication, which includes at least one of the following: SRS port, antenna port.

[0088] The TA information indication command may include at least one of the following: RRC, MAC CE, RAR MAC and physical layer signaling. The physical layer signaling may include at least one of the following: PDCCH and DCI.

[0089] In addition, the command indication method includes at least one of a two-step indication and a three-step indication. The two-step indication includes: the wireless communication node sends a first command to the wireless communication device to configure beam indications of multiple uplink transmission beams to form a beam state pool; and the wireless communication node sends a second command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes at least one of the following: RRC, MAC CE; and the second command includes at least one of the following: MAC CE, DCI.

[0090] The three-step indication includes the following contents. First, the wireless communication node sends a first command to the wireless communication device to indicate beam indications of multiple uplink transmission beams to form a beam state pool. Then, the wireless communication node sends a second command to the wireless communication device to activate some beam indications in the pool. Finally, the wireless communication node sends a third command to the wireless communication device to indicate one or more specific beam indications of the transmission beam or beam group. The first command includes RRC; the second command includes MAC CE; and the third command includes DCI.

[0091] In various embodiments of the present teachings, the TAC value includes at least one of: an absolute TAC value of the SRS transmission beam; and a relative TAC value of the SRS transmission beam compared to a previous uplink transmission.

[0092] Fig. 9 An exemplary uplink transmission conflict caused by TA modification according to some embodiments of the present disclosure is shown 900. When a UE receives TA information from a base station and applies it to the subsequent adjustment of the transmission TA of an uplink signal, it may overlap with a previous adjacent uplink signal without TA adjustment in the time domain, thereby causing an uplink signal conflict. Fig. 9 As shown, time slot n 911 starts from the timing alignment baseline 901 in the time domain. Before the TA modification, time slot n 911, time slot n+1 912...time slot n+k 913 do not overlap. After the TA modification, the time slots starting from time slot n+1 922 have an updated or adjusted TA, while time slot n 921 still uses the old TA or unadjusted TA. As a result, two adjacent time slots (time slot n 921 and time slot n+1 922) have overlapping time slot portions 930 due to TA adjustment 940, which leads to potential uplink transmission conflicts. In the existing NR standard, in order to resolve this type of conflict, the UE sends all data in the previous time slot n 921 without TA adjustment, but does not send the overlapping uplink data of time slot n+1 922 with TA adjustment in the overlapping time slot portion 930. This can be referred to as "sacrificing the latter to ensure the former." However, the demodulation reference signal (DM-RS) is usually placed in the first three orthogonal frequency division multiplexing (OFDM) symbols in the transmission signal time slot and is used by the base station for demodulation of the uplink data in the time slot. In addition, the uplink signal of time slot n+1 922 uses TA adjustment during timing synchronization. Compared with the uplink signal of time slot n 921, due to the TA adjustment, the uplink signal of time slot n+1 922 has better anti-interference capability and transmission quality. Due to the misalignment of the uplink timing, the uplink signal of time slot n 921 may not be effectively decoded and used by the base station. Therefore, the uplink signal of time slot n+1 922 should be fully reserved for transmission.

[0093] Therefore, the present teaching discloses a method of "sacrificing the former to ensure the latter" to resolve such conflicts. The UE does not send the overlapping part of the data in the previous time slot n without TA adjustment, but sends all the data in the next time slot n+1922 with TA adjustment. This can achieve the following benefits: the subsequent uplink signal has been adjusted by the new TA, which can better ensure that it is correctly received and used by the base station to improve the overall high-quality transmission of the uplink signal. The subsequent uplink signal has been adjusted by the TA, which can better ensure that it is correctly received and used by the base station to improve the overall high-quality transmission of the uplink signal. First, the wireless communication device receives TA information from the wireless communication node, and based on the TA information, adjusts the TA of the uplink transmission signal in the subsequent n time slots. When the TA-adjusted uplink signal partially overlaps with the previous adjacent uplink transmission signal without TA adjustment in the time domain, resulting in a conflict, the wireless communication device adopts the following method to resolve the uplink transmission conflict. The wireless communication device reduces the uplink transmission signal accordingly in the previous time slot without TA adjustment, that is, does not send the data of the previous uplink transmission in the overlapping time slot part; and sends the complete data of the subsequent uplink transmission with TA adjustment in the subsequent time slot including the overlapping time slot part.

[0094] In one embodiment, whether to use the "sacrifice the latter to ensure the former" mode or the "sacrifice the former to ensure the latter" mode depends on the data content in the previous uplink transmission of the two overlapping uplink transmissions. When the previous uplink transmission includes PUCCH or SRS in the overlapping time slot portion, the wireless communication device can send all the data of the previous uplink transmission to the wireless communication node in the previous time slot, but will not send any data of the subsequent uplink transmission. When the previous uplink transmission includes PUSCH in the overlapping time slot portion, the wireless communication device can send all the data of the subsequent uplink transmission to the wireless communication node in the subsequent time slot, but will not send any data of the previous uplink transmission.

[0095] Although various embodiments of the present disclosure have been described above, it should be understood that they are presented only by way of example and not by way of limitation. Similarly, various figures may depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the present disclosure. However, these personnel should understand that the present disclosure is not limited to the example architectures or configurations shown, but can be implemented using a variety of alternative architectures and configurations. In addition, as those of ordinary skill in the art should understand, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the exemplary embodiments described above.

[0096] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the quantity or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more units or unit instances. Thus, reference to a first unit and a second unit does not mean that only two units can be used, or that the first unit must precede the second unit in some manner.

[0097] In addition, it should be understood by those skilled in the art that any of a variety of different technologies and techniques may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0098] Those of ordinary skill in the art should also understand that any of the various illustrative logical blocks, modules, processors, means, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design codes containing instructions (which, for convenience, may be referred to herein as "software" or "software modules"), or any combination of these technologies.

[0099] In order to clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, modules, circuits and steps have been generally described above according to their functions. Whether such functions are implemented as hardware, firmware, or implemented as software, or implemented as a combination of these technologies, depends on the specific application and the design constraints imposed on the entire system. Those skilled in the art can implement the described functions in various ways for each specific application, but the decision of this embodiment will not lead to deviation from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, modules, etc. can be configured to perform one or more functions described herein. As used herein with respect to a specific operation or function, the term "configured to" or "configured for" refers to a processor, device, component, circuit, structure, machine, module, etc., which is physically constructed, programmed and / or arranged to perform a specified operation or function.

[0100] In addition, it should be understood by those of ordinary skill in the art that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC) that includes a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logic blocks, modules, and circuits may also include antennas and / or transceivers to communicate with various components within a network or within a device. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration that performs the functions described herein.

[0101] If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, and communication media include any media that enables a computer program or code to be transferred from one place to another. The storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0102] In this application, the term "module" used herein refers to software, firmware, hardware, and any combination of these elements for performing the relevant functions described herein. In addition, for the purpose of discussion, various modules are described as discrete modules; however, it is obvious to those of ordinary skill in the art that two or more modules can be combined to form a single module that performs the associated functions according to the embodiments of the present disclosure.

[0103] In addition, memory or other memory and communication components can be used in the embodiments of the present disclosure. It should be understood that, for the sake of clarity, the above description has described the embodiments of the present disclosure with reference to different functional units and processors. However, it is apparent that any suitable functional distribution between different functional units, processing logic elements or domains can be used without departing from the present disclosure. For example, the functions illustrated as being performed by a separate processing logic element or controller can be performed by the same processing logic element or controller. Therefore, reference to a specific functional unit is only a reference to an appropriate means for providing the described functions, rather than an indication of a strict logical or physical structure or organization.

[0104] Various modifications to the embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but is to be given the widest scope consistent with the novel features and principles disclosed herein, as set forth in the claims.

Claims

1. A method performed by a wireless communication device, the method comprising: receiving a first command from a wireless communication node, the first command indicating: a first set of beam indications and a second set of timing advance command (TAC) values ​​or a relationship between the first set and the second set, wherein each beam indication in the first set is associated with a corresponding TAC value in the second set; and receiving a second command from the wireless communication node, the second command activating a first subset of beam indications in the first set and a second subset of TAC values ​​in the second set, wherein each beam indication in the first subset is associated with a corresponding TAC value in the second subset; and A third command is received from the wireless communication node for uplink transmissions by the wireless communication device, the third command comprising an indication for uplink transmissions by the wireless communication device, the indication comprising a TAC value, wherein the TAC value in the indication is from the second subset.

2. The method according to claim 1, wherein: the indication of the TAC value indicating the TAC value and a TA indication associated with the TAC value; The TA indication includes at least one of the following: a TA group TAG associated with the TAC value, and a beam indication associated with the TAC value; When the TA indication includes the beam indication, the TA indication includes the beam indication associated with the TAC value; and When the TA indication does not include the beam indication, the TA indication includes a TAG associated with the TAC value.

3. The method according to claim 1, wherein: The relationship between the first set and the second set is configured based on at least one of the following: The radio resource control RRC in the first command; A MAC control element MAC CE in the second command; or The downlink control information DCI in the third command.

4. The method according to claim 1, wherein: Each beam indication includes at least one of the following: Sounding reference signal SRS resource set; Spatial Relationship Information SRI; Quasi-co-sited QCL state; Transmission Configuration Indicator TCI status; Control resource set CORESET; Control resource set CORESET pool; Non-zero power channel state information reference signal NZP-CSI-RS resource set; SRS port; Antenna port; Antenna panel number; or A beam group, the beam group comprising at least one of the following: a set of beams sent to different transmit / receive points TRP in the same serving cell; and A set of beams transmitted in different serving cells.

5. The method according to claim 1, wherein: The TAC value indicates at least one of the following: an absolute TAC value for uplink transmissions on beams having beam indicators associated with the TAC value; and A relative TAC value of the uplink transmission on a beam compared to a previous uplink transmission by the wireless communication device.

6. The method according to claim 1, further comprising: determining a transmission time for the uplink transmission based on the TAC value; as well as The uplink transmission is sent to the wireless communication node at the transmission time on a beam corresponding to a beam indication associated with the TAC value.

7. The method according to claim 1, wherein: The uplink transmission includes transmission of at least one of the following: Physical uplink control channel PUCCH; Physical uplink shared channel PUSCH; or Sounding Reference Signal SRS.

8. A method performed by a wireless communication device, the method comprising: receiving a first TAC value from a wireless communication node, the first TAC value being used to schedule a previous uplink transmission of the wireless communication device in a previous time slot; as well as receiving a second TAC value from the wireless communication node, the second TAC value being used to schedule a subsequent uplink transmission of the wireless communication device in a subsequent time slot, wherein: The first TAC value is different from the second TAC value, and wherein In the case where the previous time slot and the next time slot are two adjacent time slots and have an overlapping time domain portion, all data of the previous uplink transmission is sent to the wireless communication node in the previous time slot, and data of the next uplink transmission in the overlapping time domain portion is not sent; or all data of the next uplink transmission is sent to the wireless communication node in the next time slot, and data of the previous uplink transmission in the overlapping time domain portion is not sent.

9. A method performed by a wireless communication node, the method comprising: Configuring a first set of beam indications and a second set of timing advance command (TAC) values ​​for a wireless communication device, wherein each beam indication in the first set is associated with a corresponding TAC value in the second set; generating, for uplink transmissions by the wireless communication device, an indication comprising a TAC value from the second set; Sending a first command to the wireless communication device, the first command indicating: the first set of beam indications, the second set of TAC values, or a relationship between the first set and the second set; sending a second command to the wireless communication device, the second command activating a first subset of beam indicators in the first set and a second subset of TAC values ​​in the second set, wherein each beam indicator in the first subset is associated with a corresponding TAC value in the second subset; and A third command is sent to the wireless communication device, the third command indicating an indication for uplink transmission of the wireless communication device, wherein the TAC value in the indication is from the second subset.

10. A wireless communication device comprising a processor and a memory, wherein the processor is configured to execute computer executable instructions to implement the method of any one of claims 1 to 9.

11. A computer-readable medium having computer-executable instructions stored thereon, the computer-executable instructions being used to execute the method according to any one of claims 1 to 9.

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