Application time for improving mobility in wireless communication

Abstract

A wireless communication method includes receiving, by a communication device, signaling including information to be used for one or more of a handover of the communication device from a serving cell to a target or candidate cell, or communication between the communication device and the target or candidate cell, and performing, by the communication device, an action using the information. In one embodiment, performing the action includes applying the information to start from a specific time or performing communication using the information.

Description

Technical Field

[0001] This document generally relates to digital wireless communication.

Background Art

[0002] With mobile communication technology, the world is becoming increasingly connected and moving towards a networked society. Compared with existing wireless networks, next-generation systems and wireless communication technologies will need to support a much wider range of use case characteristics and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP (registered trademark)). LTE Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The 5th generation wireless system, known as 5G, is evolving the LTE and LTE-A wireless standards and working to support higher data transfer speeds, a large number of connections, ultra-low latency, high reliability, and other new business needs.

Summary of the Invention

Means for Solving the Problems

[0004] Techniques are disclosed for identifying a time domain location (e.g., a time slot) in which a user equipment (UE) can perform operations related to mobility from a source cell to a target cell.

[0005] In one exemplary aspect, a method of wireless communication is disclosed. The method includes a communication device receiving a signal transmission containing information to be used for one or more of the following: a handover of the communication device from a serving cell to a target cell or candidate cell, or communication between the communication device and the target cell or candidate cell; and the communication device performing an action using the information.

[0006] In another exemplary aspect, another method of wireless communication is disclosed. The method includes transmitting a signal transmission containing information to be used for one or more of the following: handover of a communication device from a serving cell to a target cell or candidate cell, or communication between a communication device and a target cell or candidate cell.

[0007] In yet another typical aspect, the method described above is embodied in the form of processor-executable code and stored in a non-temporary computer-readable storage medium. When the code contained in the computer-readable storage medium is executed by the processor, it causes the processor to carry out the method described in this patent document.

[0008] In yet another typical embodiment, a device configured or operable to perform the method described above is disclosed.

[0009] The above and other aspects, as well as their implementation forms, are described in more detail in the drawings, specification, and claims. The present invention provides, for example, the following: (Item 1) A wireless communication method, wherein the method is Depending on the communication device, The handover of the communication device from the serving cell to the target cell or candidate cell, or Communication between the communication device and the target cell or candidate cell. Receiving a signal transmission containing information to be used for one or more of the following: The communication device performs an operation using the information. Wireless communication methods, including those mentioned above. (Item 2) Performing the aforementioned action means, Applying the aforementioned information to start from a specific time, or The communication is performed using the aforementioned information. The method described in item 1, including the method described in item 1. (Item 3) The aforementioned signal transmission includes different information applied to start from different specific times, or The aforementioned signal transmission includes different information applied to start from the same specific time, The method described in either item 1-2. (Item 4) The information includes one or more of the cell switching instruction and transmission configuration instruction (TCI) states, and the operation is performed in accordance with the information received in the signal transmission. Applying the cell switching instruction and TCI status instruction to start from the aforementioned specific time, Interpreting the TCI status indicator as the cell switching indicator, and applying the TCI status indicator to start from the specific time, After applying the cell switching instruction or after the cell switching is completed, continue to apply the TCI status instruction. Applying the aforementioned cell switching instruction and simultaneously applying the aforementioned TCI status instruction, After applying the cell switching instruction or after the cell switching is completed, use a rule to determine the time for which the TCI status instruction is applied. After applying the cell switching instruction or after the cell switching is completed, set the time gap for applying the TCI state to 0. Applying the TCI status instruction at a specific time after applying the cell switching instruction or after the cell switching is completed, Apply the TCI status instruction after a time gap following the application of the cell switching instruction or after the completion of the cell switching. After applying the cell switching instruction or after completing the cell switching, receiving the TCI status instruction results in using a rule for determining the time to use the TCI status instruction. After applying the cell switching instruction or after the cell switching is completed, receiving the TCI status instruction results in using the TCI status instruction at another specific time. The method described in item 1, which includes one or more of the following. (Item 5) The aforementioned specific time is when the first information included in the signal transmission is applied, The second time is when the second information included in the signal transmission is applied, The communication device responds to the fact that the specific time is later than the second time, Continue applying the second piece of information mentioned above. To determine that the aforementioned second information is invalid, To determine that the second piece of information above is not applicable, Applying the second information after the aforementioned specific time, Applying the second information at the time the first information is applied, or Set the time for which the second piece of information described above is applied to 0. The method described in any one of items 1 through 3, which involves performing one or more of the following: (Item 6) The communication device responds to receiving the second information after a specific time period in which the first information is applied, To determine a second time when the aforementioned second information applies based on existing rules, Determining the second time to which the second information applies based on the time gap to the specific time to which the first information, indicated or updated by the signal transmission, applies, The second time to which the second information is applied is determined based on the time gap with respect to the reference point, or Determining that the second information should not be received within a time gap after the specific time to which the first information, indicated or updated by the aforementioned signal transmission, is applied. The method described in any one of items 1 through 4, which involves performing one or more of the following: (Item 7) The communication device determines that it should not receive the second information indicated or updated by the signal transmission before the specific time at which the first information indicated or updated by the signal transmission is applied, or The communication device determines that the second information is invalid in response to receiving the second information indicated or updated by the signal transmission before the specific time in which the first information indicated or updated by the signal transmission is applied, or Discarding the second information in response to the communication device receiving the second information indicated or updated by the signal transmission before the specific time in which the first information indicated or updated by the signal transmission is applied. The method described in any one of items 1 to 4, further including the method described in any one of items 1 to 4. (Item 8) The method described in any one of items 1 to 7, wherein the aforementioned specific time is determined by the time gap relative to the reference. (Item 9) The aforementioned signal transmission includes different information having different reference points, or The aforementioned signal transmission includes different information having the same reference point. The method described in any one of items 1, 6, or 8. (Item 10) The aforementioned reference point is, The starting or ending position when the communication device receives the signal transmission indicating or updating the information, The starting or ending position when the communication device receives the information indicated or updated by the signal transmission, The start or end position when the communication device transmits acknowledgment information in response to the signal transmission indicating or updating the aforementioned information, or The start or end position when the communication device transmits the acknowledgment information in response to the information indicated or updated by the signal transmission. The method described in item 8 or 9, which includes one or more of the following. (Item 11) The method according to item 10, wherein the start position or the end position includes the start or end of a time slot or the start or end of a symbol. (Item 12) The reference point is determined based on the first subcarrier interval (SCS) of the source cell or the second SCS of the target cell, in response to the first SCS being different from the second SCS; or The reference point is determined in response to the fact that the source cell is asynchronous with the target cell, by considering one or more of the following: the timing difference between the source cell and the target cell, the first timing advance (TA) of the source cell, or the second TA of the target cell. The method described in any one of items 1 through 11, further comprising one or more of the following: (Item 13) The method according to item 4, 6, or 8, wherein the time gap is a duration that includes the minimum value of the time gap; or the time gap is a duration in the time domain. (Item 14) The aforementioned time gap or the minimum value of the aforementioned time gap is, At least one current value; one or more additional values ​​added to at least one value from the current set of values; at least one current value plus a specific value or set of specific values; at least one current value scaled by a scaling factor; radio resource control (RRC) signaling configuration; media access control-control element (MAC CE) signaling instruction; downlink control information (DCI) signaling instruction; a predetermined value; the capabilities of the communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; the value of variable T1; or one or more of P1 and P2. The method described in item 4, 6, or 8, determined based on one or more of the following. (Item 15) The method according to any one of items 4 to 14, wherein the time gap or the granularity of the time gap is a symbol, a slot, a subframe, a frame, a nanosecond, a microsecond, a millisecond, or a second. (Item 16) The signal transmission is as described in any one of items 1 to 15, including downlink control information (DCI) or media access control element (MAC CE). (Item 17) The method according to item 10, wherein the acknowledgment information is transmitted by the communication device to one or more of the source cells or the target cells. (Item 18) The method according to item 1, further comprising using the information received from the serving cell for communication with the target cell or the candidate cell. (Item 19) The method described in item 18, wherein the use depends on the relationship between the information received from the serving cell and the information from the target cell or the candidate cell. (Item 20) The aforementioned information is, Transmission Configuration Indicator (TCI) status, beam indication, switching command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switching indication, timing advance (TA), timing difference between serving cell and target cell, relationship between reference signal and cell, timer, indication related to common information to be used for target cell or candidate cell, channel / signal transmission or reception, reference signal The method described in any one of items 1 through 19, including one or more of the following. (Item 21) After applying the switching or after completing the switching, enable or activate the first parameter of the target cell or the candidate cell, or Using or activating the second parameter of the target cell or candidate cell after receiving the aforementioned switching command or cell switching instruction. The method described in item 1 or 20, including the method described in item 1 or 20. (Item 22) Timing advance (TA) or timing difference is, Instructions from network devices; The timing difference is obtained by subtracting the second TA value associated with the target cell from the first TA value associated with the source cell; Based on L1 measurement; Based on a Random Access Channel (RACH) procedure; or Based on a prescribed method The method described in item 20, obtained by any one or more of the following. (Item 23) The units of N1 or X or T1 or P1 or P2 or offset are subframes, slots, symbols, frames, or units of time measured in nanoseconds, microseconds, milliseconds, or seconds, as described in Item 14. (Item 24) The offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a specific value, as described in item 14. (Item 25) A wireless communication method, wherein the method is Depending on the network device, Handover of communication devices from serving cell to target cell or candidate cell, or Communication between the communication device and the target cell or candidate cell, To transmit a signal containing information that should be used for one or more of the following: Wireless communication methods, including those mentioned above. (Item 26) The aforementioned signal transmission is Applying the aforementioned information to start from a specific time, or The communication is performed using the aforementioned information. The method of item 25, which causes the communication device to perform an operation including the above. (Item 27) The aforementioned signal transmission includes different information applied to start from different specific times, or The aforementioned signal transmission includes different information applied to start from the same specific time, The method described in any of items 25-26. (Item 28) The information includes one or more of the cell switching instruction and transmission configuration instruction (TCI) states, and the operation is performed in accordance with the information received in the signal transmission. Applying the cell switching instruction and TCI status instruction to start from the aforementioned specific time, Interpreting the TCI status indicator as the cell switching indicator, and applying the TCI status indicator to start from the specific time, After applying the cell switching instruction or after the cell switching is completed, continue to apply the TCI status instruction. Applying the aforementioned cell switching instruction and simultaneously applying the aforementioned TCI status instruction, After applying the cell switching instruction or after the cell switching is completed, use a rule to determine the time for which the TCI status instruction is applied. After applying the cell switching instruction or after the cell switching is completed, set the time gap for applying the TCI state to 0. Applying the TCI status instruction at a specific time after applying the cell switching instruction or after the cell switching is completed, Apply the TCI status instruction after a time gap following the application of the cell switching instruction or after the completion of the cell switching. After applying the cell switching instruction or after completing the cell switching, receiving the TCI status instruction results in using a rule for determining the time to use the TCI status instruction. After applying the cell switching instruction or after the cell switching is completed, receiving the TCI status instruction results in using the TCI status instruction at another specific time. The method described in item 25, which includes one or more of the following. (Item 29) The aforementioned specific time is when the first information included in the signal transmission is applied, The second time is when the second information included in the signal transmission is applied, The communication device responds to the fact that the specific time is later than the second time, Continue applying the second piece of information mentioned above. To determine that the aforementioned second information is invalid, To determine that the second piece of information above is not applicable, Applying the second information after the aforementioned specific time, Applying the second information at the time the first information is applied, or Set the time for which the second piece of information described above is applied to 0. The method described in any one of items 25 to 27, wherein one or more of the following are performed. (Item 30) The signal transmission occurs in response to the communication device receiving the second information after a specific time period in which the first information is applied. To determine a second time when the aforementioned second information applies based on existing rules, Determining the second time to which the second information applies based on the time gap to the specific time to which the first information, indicated or updated by the signal transmission, applies, The second time to which the second information is applied is determined based on the time gap with respect to the reference point, or Determining that the second information should not be received within a time gap after the specific time to which the first information, indicated or updated by the aforementioned signal transmission, is applied. The method according to any one of items 25 to 28, wherein the communication device is made to perform one or more of the following. (Item 31) The aforementioned signal transmission is The communication device determines that it should not receive the second information indicated or updated by the signal transmission before the specific time at which the first information indicated or updated by the signal transmission is applied, or The communication device determines that the second information is invalid in response to receiving the second information indicated or updated by the signal transmission before the specific time in which the first information indicated or updated by the signal transmission is applied, or Discarding the second information in response to the communication device receiving the second information indicated or updated by the signal transmission before the specific time in which the first information indicated or updated by the signal transmission is applied. The method according to any one of items 25 to 28, wherein the communication device performs the aforementioned action. (Item 32) The method described in any one of items 25 to 31, wherein the specific time is determined by the time gap relative to the reference. (Item 33) The aforementioned signal transmission includes different information having different reference points, or The aforementioned signal transmission includes different information having the same reference point. The method described in any one of items 25, 30, or 32. (Item 34) The aforementioned reference point is, The starting or ending position when the communication device receives the signal transmission indicating or updating the information, The starting or ending position when the communication device receives the information indicated or updated by the signal transmission, The start or end position when the communication device transmits acknowledgment information in response to the signal transmission indicating or updating the aforementioned information, or The start or end position when the communication device transmits the acknowledgment information in response to the information indicated or updated by the signal transmission. The method described in item 32 or 33, which includes one or more of the following. (Item 35) The method according to item 34, wherein the start position or the end position includes the start or end of a time slot or the start or end of a symbol. (Item 36) The reference point is determined based on the first subcarrier interval (SCS) of the source cell or the second SCS of the target cell, in response to the first SCS being different from the second SCS; or The reference point is determined in response to the fact that the source cell is asynchronous with the target cell, by considering one or more of the following: the timing difference between the source cell and the target cell, the first timing advance (TA) of the source cell, or the second TA of the target cell. The method described in any one of items 25 to 35, further comprising one or more of the following: (Item 37) The method according to item 28, 30, or 32, wherein the time gap is a duration that includes the minimum value of the time gap; or the time gap is a duration in the time domain. (Item 38) The aforementioned time gap or the minimum value of the aforementioned time gap is, At least one current value; one or more additional values ​​added to at least one value from the current set of values; at least one current value plus a specific value or set of specific values; at least one current value scaled by a scaling factor; Radio Resource Control (RRC) signaling configuration; Medium Access Control - Control Element (MAC CE) signaling instruction; Downlink Control Information (DCI) signaling instruction; a given value; the capability of a communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; the value of variable T1; or one or more of P1 and P2. The method described in item 28, 30, or 32, determined based on one or more of the following. (Item 39) The method according to any one of items 28 to 38, wherein the time gap or the granularity of the time gap is a symbol, slot, subframe, frame, or nanosecond, microsecond, millisecond, or second. (Item 40) The signal transmission is as described in any one of items 25 to 39, including downlink control information (DCI) or media access control element (MAC CE). (Item 41) The method according to item 34, wherein the acknowledgment information is transmitted by the communication device to one or more of the source cells or the target cells. (Item 42) The method of item 25, further comprising using the information received from the serving cell for communication with the target cell or the candidate cell. (Item 43) The method described in item 42, wherein the use depends on the relationship between the information received from the serving cell and the information from the target cell or the candidate cell. (Item 44) The aforementioned information is, Transmission Configuration Indicator (TCI) status, beam indication, switching command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switching indication, timing advance (TA), timing difference between serving cell and target cell, relationship between reference signal and cell, timer, indication related to common information to be used for target cell or candidate cell, channel / signal transmission or reception, reference signal The method described in any one of items 25 to 43, including one or more of the following. (Item 45) After applying the switching or after completing the switching, enable or activate the first parameter of the target cell or the candidate cell, or Using or activating the second parameter of the target cell or candidate cell after receiving the aforementioned switching command or cell switching instruction. The methods described in item 25 or 44, including those described in item 25 or 44. (Item 46) Timing advance (TA) or timing difference is, Instructions from network devices; The timing difference is obtained by subtracting the second TA value associated with the target cell from the first TA value associated with the source cell; Based on L1 measurement; Based on a Random Access Channel (RACH) procedure; or Based on a prescribed method The method described in item 44, provided by one or more of the following. (Item 47) The units of N1 or X or T1 or P1 or P2 or offset are subframes, slots, symbols, frames, or units of time measured in nanoseconds, microseconds, milliseconds, or seconds, as described in item 38. (Item 48) The offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a specific value, as described in item 38. (Item 49) A device for wireless communications comprising a processor configured to perform one or more of the methods described in items 1 through 48. (Item 50) A non-temporary computer-readable program storage medium storing code, wherein, when executed by a processor, the code causes the processor to perform one or more of the methods described in items 1 to 48. [Brief explanation of the drawing]

[0010] [Figure 1A] Figure 1A shows an example of the application time for the Transmission Configuration Indicator (TCI) status indicator disclosed in this document.

[0011] [Figure 1B] Figure 1B shows several examples of application times for user equipment to apply switching commands or TCI status indicators for L1 / L2 mobility scenarios.

[0012] [Figure 2A] Figure 2A shows an example of the location of the acknowledgment corresponding to a switch command, which is determined by the offset value after the start of the slot in which the switch command is received from the target cell.

[0013] [Figure 2B]Figure 2B shows an example of the location of the acknowledgment corresponding to a switch command, which is determined by the offset value after the end of the slot in which the switch command is received from the target cell.

[0014] [Figure 3] Figure 3 shows a typical flowchart for wireless communication.

[0015] [Figure 4] Figure 4 shows a typical flowchart for wireless communication.

[0016] [Figure 5] Figure 5 shows a typical block diagram of a hardware platform that may be part of a network device or communication device.

[0017] [Figure 6] Figure 6 shows an example of wireless communication, including a base station (BS) and user equipment (UE), based on several implementations of the disclosed technology. [Modes for carrying out the invention]

[0018] This patent document describes application time-related techniques for information in L1 / L2 mobility enhancement. The following examples of section headings are used to facilitate understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Thus, one or more features of one exemplary section may be combined with one or more features of another exemplary section. Furthermore, although the term 5G is used for clarity in the description, the techniques disclosed herein are not limited to 5G technology and may be used in wireless systems implementing other protocols.

[0019] (Introduction)

[0020] When wireless devices such as user equipment (UEs) move from the coverage area of ​​one cell to another, a serving cell change must occur at some point. Currently, serving cell changes are triggered by L3 measurements and performed by Radio Resource Control (RRC) signal-transmitted triggered reconfiguration, which involves synchronization for release additions for secondary cells (SCells), as well as primary cell (PCell) and primary and secondary cell (PSCell) changes, where applicable. These cases involve a complete L2 (and L1) reset, which can lead to longer latency, greater overhead, and / or longer downtime than beam switching mobility. One of the goals of improving L1 / L2 mobility is to enable serving cell changes via L1 / L2 signal-transmitted reconfiguration to reduce latency, overhead, and downtime.

[0021] Current technology needs improvement to achieve rapid changes of serving cells via L1 / L2 signaling in order to reduce latency, overhead, and / or interruption time. Exemplary techniques for such improvements may include adjusting or defining the application time of information, such as switching commands, TCI status indicators, etc., in inter-cell mobility scenarios, because legacy application times may not be sufficient to switch information (including criteria for determining information application time or time gap, which is the duration from when a communication device receives information or when a communication device explicitly or implicitly transmits acknowledgment information corresponding to the information until when a communication device begins to apply the information) from a serving cell to a target cell. In some embodiments, the time gap or duration may be replaced by a minimum time gap or duration, or the time gap or duration may be the first symbol or slot or subframe or frame, which is at least the minimum time gap or duration after the criterion. This patent document provides at least some feasible solutions to the above problem.

[0022] In some embodiments, the term “application time” of a beam indication can be described as the time during which a user device (UE) applies the indicated beam, and the time begins from a first slot which is at least the BeamAppTime_r17 symbol after the reception of the last symbol of the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH), as shown in Figure 1A. Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information corresponding to Downlink Control Information (DCI) carrying a TCI status indication without a Downlink (DL) assignment can be transmitted over the PUCCH or PUSCH; or HARQ-ACK information corresponding to Physical Downlink Shared Channel (PDSCH) scheduling by DCI carrying a TCI status indication can be transmitted over the PUSCH. The aforementioned HARQ-ACK information corresponding to DCI carrying a TCI status indication without a DL assignment or PDSCH scheduling by DCI carrying a TCI status indication is transmitted to the serving cell. BeamAppTime_r17 can be one of 1, 2, 4, 7, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336 symbols.

[0023] Figure 1A shows an example of the application time for TCI state indication according to several embodiments, where the horizontal axis represents time. As shown in the figure, while TCI state 1 is applied, a DCI carrying TCI state 2 is received. After some time, HARQ-ACK information is received. Y1 time after the end of the HARQ-ACK information transmission, TCI state 2 is applied in the subsequent slot.

[0024] In some embodiments, the term “application time” of the indicated mapping between the TCI state and the code point of the DCI field “Transmission Configuration Instruction” can be described as follows: When the UE can transmit a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the activation command, the indicated mapping between the TCI state and the code point of the DCI field “Transmission Configuration Instruction” is in the slot n

number

number

[0025] However, in Release 18, for several themes such as L1 / L2 mobility improvements, or multi-panel, multi-TRP (transmit / receive point), or carrier aggregation (CA) scenarios, it may be useful to consider one or more of the following in order to determine information application time: a description of information application time, or a description of criteria for information application time, time gap, or set of time gaps.

[0026] In some embodiments, signal transmission may be received by a communication device. The information contained in the signal transmission may include one or more of the following: transmission configuration instruction (TCI) status, beam instruction, switching command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switching instruction, timing advance (TA), timing difference between serving cell and target cell, relationship between reference signal and cell, timer, instruction related to common information used for target cell or candidate cell, channel / signal transmission or reception, reference signal, measurement configuration, reporting configuration.

[0027] In various embodiments, any one or more pieces of information may be indicated by any one or more of the following: media access control element (MAC CE) signaling, DCI signaling, and RRC signaling, or may be activated, deactivated, updated, or predefined.

[0028] In some embodiments, the switching command may be or include one or more of the following: a TCI status indicator, a beam indicator, an indicator to trigger a random access channel RACH, a timing advance, a timing difference between a serving cell and a target cell, a timer, or a signal transmission carrying one or more of the above.

[0029] In different embodiments, the communication device may be user equipment or a base station.

[0030] Figure 1B shows several examples of application times for communication devices to apply information for L1 / L2 mobility scenarios. To define the application time, one or more of the following may be considered: a criterion for determining the application time for information; and a time gap, which is the duration from when the communication device receives the information or transmits acknowledgment information corresponding to the information in an explicit or implicit manner until the communication device begins to apply the information. In Figure 1B, the horizontal axis represents time.

[0031] TCI status indicators and / or beam indicators may enable a UE to achieve mobility. A TCI status indicator can indicate to the UE that it can switch from communicating with a source cell to communicating with a target cell. A TCI status indicator includes a source reference signal (RS), which is associated with the target cell. When a UE receives a TCI status indicator, it can determine that transmission or reception with the target cell is possible.

[0032] Beam designation allows user equipment (UE) to identify that one or more beams should be used to perform transmission or reception operations with a target cell.

[0033] In some embodiments, the switching command (1) switches from communication with the source cell to communication with the target cell, (2) performs a random access channel (RACH) procedure with the target cell, and / or (3) indicates the timing advance value of the target cell to the UE.

[0034] (I. Exemplary Embodiment 1)

[0035] Embodiment 1 describes an exemplary method for determining or describing a time gap or minimum time gap for determining the time to apply information. Optionally, the time gap or minimum time gap may differ from the legacy time gap or BeamAppTime-r17 defined in Release 17. Note that the time gap or minimum time gap may be replaced with a time length or minimum time length.

[0036] In certain scenarios, if multiple time gap values ​​or minimum time gap values ​​are supported for informational purposes, different time gap values ​​or minimum time gap values ​​will be applied based on UE capability.

[0037] In some embodiments, information (e.g., one or more TCI status indicators or TCI status updates, switching commands) is taken as an example, and a method for determining or describing a time gap or minimum time gap for determining the application time for the information is illustrated. It should be noted that the relevant methods or rules are also applicable to other possible scenarios and / or other information.

[0038] In some embodiments, the time gap or minimum time gap value may be determined by any one or more of the following: -Option-1: Introduce a new time gap (new to the legacy protocol) or minimum time gap value; it is unique and not the legacy time gap or BeamAppTime-r17 specified in Rel-17. In different embodiments, the new time gap or minimum time gap value is determined by UE capability or consists of one or more predefined RRC signaling, MAC CE signaling, or DCI signaling. -Option-2: The new time gap or minimum time gap value is determined by reusing one or more of the minimum time values ​​specified in Release 17. -Option-3: The new time gap or minimum time gap is determined by extending the range of legacy minimum time values. That is, some embodiments may introduce one or more additional time gap values ​​in addition to any one or more of the minimum time values ​​defined in Release 17. Optionally, the additional values ​​are to facilitate the application of information in candidate or target cells. -Option-4: The new time gap or minimum time gap value is determined by adding and / or subtracting and / or multiplying and / or dividing the minimum time value specified in Release 17 by an offset value or set of offset values. -Option-5: The new time gap or minimum time gap value is determined by one or more of the minimum time values ​​defined in Release 17 scaled by the scaling factor. In some embodiments, the scaling factor is determined based on the SCS difference between the source cell and the target cell, or is predefined. -Option-6: The new time gap or minimum time gap value is determined by adding and / or subtracting and / or multiplying and / or dividing the minimum time value specified in Release 17, scaled by the scaling factor, by an offset value or a set of offset values, or by any one of these methods. -Option-7: The new time gap or minimum time gap value is determined by adding and / or subtracting and / or multiplying and / or dividing the minimum time value specified in Release 17, scaled by the scaling factor, by the timing difference, or by one or more of the following: -Option-8: The new time gap or minimum time gap value is determined by adding and / or subtracting and / or multiplying and / or dividing the minimum time value specified in Release 17 by the timing difference, or by one or more of the following: -Option-9: The new time gap or minimum time gap value is determined by adding and / or subtracting and / or multiplying and / or dividing the minimum value specified in Release 17 scaled by the scaling factor by the timing difference, and then adding and / or subtracting and / or multiplying and / or dividing that by an offset value or a set of offset values.

[0039] In some embodiments, the units of the minimum time values ​​defined in Release 17 above can be replaced with symbols, slots, subframes, frames, nanoseconds, microseconds, milliseconds, or seconds.

[0040] The minimum time value specified in Release 17 above can be one of 1, 2, 4, 7, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336 symbols. The time length value specified in Release 17 is the first slot which is at least the minimum time value after the reference.

[0041] Optionally, the new duration may be the first symbol, slot, subframe, or frame that is at least the new minimum time gap value after the reference. Optionally, the units of the new minimum time gap value may be symbols, slots, subframes, frames, nanoseconds, microseconds, milliseconds, or seconds.

[0042] The aforementioned timing difference is the timing offset value between the serving cell and the target cell.

[0043] In some embodiments, the aforementioned minimum time value defined in Release 17 scaled by the scaling factor, or the minimum time value defined in Release 17, can be replaced by a minimum time value for the scenario without taking the SCS difference and / or timing difference between the serving cell and the target cell.

[0044] In some embodiments, the unit of the offset value or timing difference can be a symbol, a slot, a subframe, a frame, or any one or more of nanoseconds, microseconds, milliseconds, or seconds.

[0045] In some embodiments, any one or more of the timing difference or offset may be determined based on L1 measurements by any one or more of the predefined network indication, RRC signal transmission, MAC CE signal transmission, and DCI signal transmission.

[0046] In some embodiments, the time gap or minimum time gap value may be applied based on the SCS of the serving cell or target cell.

[0047] (II. Exemplary Embodiment 2)

[0048] Embodiment 2 describes an exemplary method for defining criteria for determining the time to apply information. For example, one or more of the following: TCI status indication or beam indication or TCI status update or switching command.

[0049] In Release 17, the criterion for determining the application time of the TCI status indicator is the acknowledgment of the DCI carrying the TCI status indicator or the last symbol of the PDSCH scheduled by the DCI carrying the TCI status indicator.

[0050] To support cell switching or beam switching or other scenarios from one cell (or serving cell) to another (or target cell), criteria for determining the application time for information must be described or clarified.

[0051] In some embodiments, the criterion for determining the application time for the information can be any one or more of the following alternative examples: -Alternative example-1: The first symbol on which information or a signal carrying information is transmitted or received; -Alternative example-2: The last symbol on which information or a signal carrying information is transmitted or received; -Alternative example-3: The start of a slot where information or a signal transmission carrying information is transmitted or received; -Alternative example-4: The end of a slot where information or signals carrying information are transmitted or received;

[0052] In some embodiments, performing communication may mean that signal transmission is carried out by or received by a base station or UE. -Alternative example-5: The first symbol transmitted or received to initiate acknowledgment information corresponding to information or signal transmission carrying information; -Alternative example-6: The last symbol transmitted or received to indicate the termination of acknowledgment information corresponding to information or signal transmission carrying information; -Alternative example-7: The start of a slot to which acknowledgment information corresponding to information or signal transmission carrying information is transmitted or received to begin; -Alternative example-8: End of slot transmission or reception to terminate information or acknowledgment information corresponding to the transmission of information-carrying signals; -Alternative Example-9: The first symbol transmitted or received to initiate acknowledgment information corresponding to information or signal transmission carrying information. Optionally, the first symbol for transmitting or receiving acknowledgment information is determined based on the source cell's SCS. -Alternative Example-10: The last symbol transmitted or received to terminate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the last symbol transmitted or received acknowledgment information is determined based on the SCS of the source cell. -Alternative Example-11: Start of a slot to initiate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the start of a slot for transmitting or receiving acknowledgment information is determined based on the SCS of the source cell. -Alternative Example-12: End of slot transmission or reception for the termination of information or acknowledgment information corresponding to the transmission of signals carrying information. In some embodiments, the end of slot for transmitting or receiving acknowledgment information is determined based on the SCS of the source cell. -Alternative Example-13: The first symbol transmitted or received to initiate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the first symbol for transmitting or receiving acknowledgment information is determined based on the SCS of the target cell. -Alternative Example-14: The last symbol transmitted or received to terminate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the last symbol transmitted or received acknowledgment information is determined based on the SCS of the target cell. -Alternative Example-15: Start of a slot to initiate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the start of a slot for transmitting or receiving acknowledgment information is determined based on the SCS of the source cell and target cell. -Alternative Example-16: End of slot transmission or reception for the termination of information or acknowledgment information corresponding to the transmission of signals carrying information. In some embodiments, the end of slot for transmitting or receiving acknowledgment information is determined based on the SCS of the target cell.

[0053] In some embodiments, when an acknowledgment corresponding to information or an information-carrying signal is transmitted to a source cell, the location of the acknowledgment corresponding to the information or information-carrying signal is determined by an offset value at the start or end of the slot for receiving the information or information-carrying signal from the source cell. In some embodiments, the offset value is determined based on the serving cell's SCS.

[0054] However, when an acknowledgment corresponding to information or an information-carrying signal is transmitted to the target cell, the location of the acknowledgment corresponding to the information or information-carrying signal is determined by an offset value after the start or end slot for receiving the information or information-carrying signal from the target cell or source cell. Here, the offset value is determined based on the target cell's SCS.

[0055] The aforementioned offset value can be determined by any one or more of the following: MAC CE signal transmission, DCI signal transmission, RRC signal transmission, predefined offset from the source cell with a scaling factor.

[0056] Figure 2A shows the location of an acknowledgment corresponding to information or information-carrying signal transmission, the location determined by an offset value after the start of the slot, and the information or information-carrying signal transmission is received from the target cell. In Figure 2A, the horizontal axis represents time.

[0057] Figure 2B shows the location of an acknowledgment corresponding to information or information-carrying signal transmission, the location determined by an offset value after the end of the slot, and the information or information-carrying signal transmission is received from the target cell. In Figure 2B, the horizontal axis represents time. -Alternative Example-17: The first symbol transmitted or received to initiate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the first symbol for transmitting or receiving the acknowledgment is determined based on the SCS of the target cell and the timing difference between the source cell and the target cell. -Alternative Example-18: The last symbol transmitted or received to terminate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the last symbol to transmit or receive acknowledgment is determined based on the SCS of the target cell and the timing difference between the source cell and the target cell. -Alternative Example 19: Start of a slot to initiate acknowledgment information corresponding to information or signal transmission carrying information. In some embodiments, the start of a slot for transmitting or receiving an acknowledgment is determined based on the SCS of the target cell and the timing difference between the source cell and the target cell. -Alternative example 20: End of slot where acknowledgment information corresponding to information or signal transmission carrying information is transmitted or received to initiate. In some embodiments, the end of slot for transmitting or receiving an acknowledgment is determined based on the SCS of the target cell and the timing difference between the source cell and the target cell.

[0058] In some embodiments, except that acknowledgment information corresponding to information or signal transmission carrying information is transmitted, the acknowledgment information may be some implicit information such as channel / signal transmission or reception, MSG1 transmission, MSG3 transmission, MSGA transmission, or RS transmission. -Alternative Example-21: The first symbol in RS transmitted to source and / or target cells to inform a base station or network of timing advance (TA) information. Optionally, the transmission of RS can be considered an acknowledgment of information or signal transmission carrying information. -Alternative Example-22: The last symbol in RS transmitted to the source cell and / or target cell to inform the base station or network of TA information. In some embodiments, the transmission of RS can be considered an acknowledgment of information or signal transmission carrying information. -Alternative Example-23: Slot initiation transmitted to source and / or target cells to inform base station or network of TA information. In some embodiments, the transmission of RS can be considered an acknowledgment of information or signal transmission carrying information. -Alternative Example-24: Slot initiation transmitted to source and / or target cells to inform base station or network of TA information. In some embodiments, the transmission of RS can be considered an acknowledgment of information or signal transmission carrying information.

[0059] In some embodiments, the aforementioned RS can be replaced with MSG1, MSG3, or MSGA, where RS can be any one or more of the sounding reference signals SRS, DMRS, SSB, or channel state information reference signal CSI-RS. In some embodiments, the rules, logic, or methods mentioned in one or more of Alternative Examples 1 to 20 can also be applied when the acknowledgment is RS, MSG1, MSG3, or MSGA.

[0060] (III. Exemplary Embodiment 3)

[0061] Embodiment 3 describes an exemplary method for determining the application time for information indicated or activated by MAC CE signaling.

[0062] When MAC CE activates, indicates, or updates information, or when a communication device receives information indicated, activated, or updated by MAC CE signaling in slot #n, the information may be applied to begin or end from the first slot or symbol which is at least the minimum time gap or time gap after the reference. (1) The criteria can be defined as one or more of the following: -Scheme-1: Start of the slot where MAC CE is received by the communication device; -Scheme-2: End of slot where MAC is received by communication device; -Scheme-3: The first symbol of MAC CE received by the communication device; -Scheme-4: The last symbol of MAC CE received by the communication device; -Scheme-5: Start of slot #m where MAC CE signaling or acknowledgment information corresponding to the PDSCH carrying MAC CE signaling is transmitted by the communication device; -Scheme-6: End of slot #m where acknowledgment information corresponding to the PDSCH carrying MAC CE signal transmission is transmitted by the communication device; -Scheme-7: The first symbol of the acknowledgment information corresponding to the PDSCH that carries the MAC CE signal transmission transmitted by the communication device. -Scheme-8: The last symbol of the acknowledgment information corresponding to the PDSCH that carries the MAC CE signal transmission transmitted by the communication device. -One or more of the rules, logic, or methods described in Embodiment 2 or other embodiments may also be applied to the definition or determination of Criterion A. (2) The time gap or minimum time gap may be defined or determined by one or more of the following: -Method-1: Similar to Rel-15 / 16, the time gap or minimum time gap value can be determined by multiplying X by N1, or can be defined as multiplying X by N1. -Method-2: The time gap or minimum time gap value can be determined by T1 or defined as T1. -Method-3: The time gap or minimum time gap value can be determined by multiplying X by N1 and adding and / or subtracting and / or multiplying the offset and / or dividing by it, or is defined as multiplying X by N1 and adding and / or subtracting and / or multiplying the offset and / or dividing by it. -Method-4: The time gap or minimum time gap value can be determined by at least one of P1 and P2. -The units of N1, X, T1, P1, P2, or offset can be subframes, slots, symbols, frames, nanoseconds, microseconds, milliseconds, or seconds. - Here, N1, X, T1, P1, P2, or offset can be an integer greater than or equal to a specific value. Optionally, the specific value could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. Optionally, the specific value could be a fixed value or a configurable value. - Here, N1 or X or T1 or P1 or P2 or offset can be determined based on UE capability. - Here, N1 or X or T1 or P1 or P2 or offset may be predefined, fixed, or configurable by one or more of the following: DCI signaling, MAC CE signaling, or RRC signaling.

[0063] In some embodiments, one or more of the rules, logic, or methods mentioned in Embodiment 1 or other embodiments may also be applied to the definition or determination of a time gap or minimum time gap.

[0064] (IV. Exemplary Embodiment 4)

[0065] Embodiment 4 describes another exemplary method for determining the beam for the initial transmission to or the initial reception from a target cell. (1) If the offset between the reception of information indicated, triggered, or updated by signaling and the first transmission to or from the target cell, or the offset between the reception of a signaling that indicates, triggers, or updates information and the first transmission to or from the target cell, or the offset between the transmission of acknowledgment information corresponding to information or a signaling that carries information and the reception of the first transmission to or from the target cell is less than or equal to a threshold, the communication device may apply a default beam to transmit / receive the first transmission to / from the target cell. In some embodiments, one or more of the following may be included in the information: TCI status indication or beam indication, or switching command. -Here, default beam means that the communication device may assume that the RS of the first transmission or reception to or from the target cell is in quasi-identical location with respect to the RS with respect to the QCL used or contained for information in the last slot; or the beam that receives or transmits switching commands or TCI status indicators or beam indicators, or one or more RSs used for DL ​​synchronization, or the signaling-related physical random access channel PRACH; or the default beam is the beam for receiving / transmitting the first transmission from / to the target cell associated with the beam that receives or transmits information such as switching commands or TCI status indicators or beam indicators. In some embodiments, the association or mapping between the reception or transmission of a beam from the serving cell and the reception or transmission of a beam from the target cell may be predefined, or introduced or defined by one or more of RRC signaling, MAC CE signaling, or DCI signaling. (2) If the offset between the reception of information indicated, triggered, or updated by signaling and the first transmission to or from the target cell, or the offset between the reception of a signaling that indicates, triggers, or updates information and the first transmission to or from the target cell, or the offset between the transmission of acknowledgment information corresponding to information or a signaling that carries information and the reception of the first transmission to or from the target cell is greater than or equal to a threshold, the UE may apply the TCI status indicator or beam indicator indicated, triggered, or updated by signaling to receive / transmit the first transmission from / to the target cell, and optionally, one or more of the TCI status indicator or beam indicator or switching commands may be included in the information. (3) If the offset between the reception of information indicated, triggered, or updated by a signaling command and the first transmission to or from the target cell, or the offset between the reception of a signaling command indicating, triggering, or updating information and the first transmission to or from the target cell, or the offset between the transmission of acknowledgment information corresponding to information or a signaling command carrying information and the first transmission to or from the target cell is greater than or equal to a threshold, but the information indicated, triggered, or updated by a switching command or signaling command does not include a TCI status indication or beam indication, the UE may apply a default beam to receive / transmit the first transmission from / to the target cell. -In some embodiments, the default beam means that the communication device may assume that the RS of the initial transmission or reception to or from the target cell is in quasi-identical location with respect to the RS with respect to the QCL used for or containing information in the latest slot. Alternatively, the default beam is the beam that receives or transmits information such as switching commands or one or more RSs used for DLsync, or signal transmission-related PRACH; or the default beam is the beam for receiving / transmitting the initial transmission from / to the target cell associated with the beam that receives or transmits information such as switching commands or TCI status indicators or beam indicators. In some embodiments, the association or mapping between the reception or transmission of a beam from the serving cell and the reception or transmission of a beam from the target cell may be predefined or introduced or defined by one or more of RRC signaling, MAC CE signaling, or DCI signaling.

[0066] In some embodiments, the aforementioned thresholds may be described based on any one or more of the following: predefined thresholds, RRC signaling, MAC CE signaling, DCI signaling, and UE capability.

[0067] (V. Exemplary Embodiment 5)

[0068] Embodiment 5 describes another exemplary method for determining the initial transmission or reception beam to and from a target cell in an asynchronous scenario between a source cell and a target cell.

[0069] Unlike some previous embodiments, this embodiment requires consideration of the timing difference between the serving cell and the target cell when determining the reference or time gap or minimum time gap value for applying the TCI status indicator or beam indicator for the first transmission or reception or switching command to / from the target cell. That is, the timing difference can be introduced in determining the reference or time gap or minimum time gap value for applying the TCI status indicator or beam indicator for the first transmission or reception or switching command to / from the target cell.

[0070] In some embodiments, the timing difference or timing advance is -Alternative example-1: Based on network instructions; the timing difference between the serving cell (e.g., source cell) and the target cell can be indicated by the network; -Alternative Example-2: The timing difference between a serving cell (e.g., a source cell) and a target cell can be determined based on the difference between the timing difference from the serving cell and the timing difference from the target cell, where the timing difference from the target cell may be represented by the network; -Alternative example-3: Based on L1 measurement; -Alternative Example-4: Based on the RACH procedure to obtain the TA of the target cell. Here, the timing difference is TA from the serving cell (e.g., source cell) - TA from the target cell; -Alternative example-5: Predefined; It can be determined by one or more of the following.

[0071] (VI. Exemplary Embodiment 6)

[0072] Embodiment 6 describes another exemplary method for determining the initial transmission or reception beam from a target cell when the source cell and target cell have different SCSs.

[0073] Unlike some of the previous embodiments, in this embodiment, when describing a criterion or time gap or minimum time gap value for applying information such as TCI status indicators or beam indicators or switching commands, a scaling factor is considered, and the scaling factor can be determined based on the serving cell's SCS / target cell's SCS.

[0074] (VII. Exemplary Embodiment 7)

[0075] Embodiment 7 describes an exemplary method for resolving issues related to entities (or network devices or cells) to which a UE transmits acknowledgment information in an inter-cell mobility scenario.

[0076] Acknowledgment information can be sent by the UE to one of the following: -Alternative example-1: Source cell; -Alternative example-2: Target cell; -Alternative example-3: Source cell and target cell.

[0077] In some embodiments, the acknowledgment information can be any one or more of the following: HARQ-ACK information corresponding to a signal transmission carrying information; HARQ-ACK information corresponding to PDSCH scheduling by a signal transmission carrying information; and HARQ-ACK information corresponding to information indicated, triggered, or updated by a signal transmission, MSG1, MSG3, MSGA, RS, or channel / signal.

[0078] In some embodiments, one or more of the above signal transmissions, MSG1, MSG3, MSGA, RS, and channel / signals indicating, triggered, or updated information or signal transmissions carrying information are applied to or used in a target cell.

[0079] (VIII. Exemplary Embodiment 8)

[0080] Embodiment 8 describes another exemplary method for determining scenarios in which the application time of TCI status indicators and / or switching commands and / or other information about the target cell may be used.

[0081] In some embodiments, different scenarios have descriptions or definitions of different TCI states or transition command application times, or descriptions or definitions of criteria for determining different TCI states and / or transition command application times or time gaps or minimum time gap values ​​or minimum time gap value sets. In some embodiments, new RRC parameters can be used to indicate the use of TCI states and / or transition commands and / or other information application times.

[0082] In some embodiments, multiple application times may be described or introduced for specific scenarios, such as L1 / L2 mobility enhancement. In some embodiments, different application times may be applied for target cells, for UEs having different capabilities or different information. In some embodiments, one application time may be applied to one or more pieces of information indicated, triggered, or updated by signaling for the target cell.

[0083] (IX. Exemplary Embodiment 9)

[0084] In some embodiments, information indicated, triggered, or updated by any one or more signal transmissions applies the same timeline or application time or validity period. In some embodiments, the application time or timeline or validity period of the information can be determined based on the legacy application time specified in Rel-17, or the legacy application time specified in Rel-17 plus an offset, or a new time gap. In some embodiments, the criterion for determining where the timeline or application time or time gap begins can reuse legacy methods in Rel-17, or refer to any one or more of the methods mentioned in Embodiments 1 to 8. In some embodiments, the new time gap or new minimum time gap can refer to any one or more of the methods described in Embodiments 1 to 8.

[0085] In some embodiments, information indicated, triggered, or updated by signal transmission can be applied to start from the first symbol or slot or subframe or frame which is a postreference time gap or at least the minimum time gap. In some embodiments, the information includes cell switching commands or instructions, and / or TCI status instructions or beam instructions. Once cell switching is complete or the cell switching command becomes effective, the applicable definitions, rules, or application times for beam indication or TCI states for the target cell or candidate cell may reuse the rules or provisions specified in Rel-17; or the applicable definitions, rules, or application times for beam indication or TCI states for the target cell or candidate cell may be determined based on the time gap after cell switching is complete or the cell switching command becomes effective, or at least the minimum time gap, which is the first symbol or slot or subframe or frame; or the application time for beam indication or TCI states for the target cell or candidate cell may be set to 0; or the beam indication or TCI state for the target cell or candidate cell may become effective or be applied immediately; or the applicable definitions, rules, or application times for beam indication or TCI states for the target cell or candidate cell may refer to any one or more of the methods mentioned in Embodiments 1 to 8.

[0086] In some embodiments, information indicated, triggered, or updated by signaling may have the same criteria for determining when to apply the information; or different information indicated, triggered, or updated by signaling may have different criteria for determining when to apply the information.

[0087] In some embodiments, information indicated, triggered, or updated by signal transmission may have the same time gap or minimum time gap; or different information indicated, triggered, or updated by signal transmission may have different time gaps or minimum time gaps.

[0088] In some embodiments, if the information indicated, triggered, or updated by signaling has the same reference and the information indicated, triggered, or updated by signaling has the same time gap or minimum time gap, the information may be applied to start from the first symbol or slot or subframe or frame which is the time gap after the reference or at least the minimum time gap.

[0089] In some embodiments, regarding cases where the information indicated, triggered, or updated by signal transmission has the same criteria, but different information indicated, triggered, or updated by signal transmission has different time gaps or minimum time gaps:

[0090] In some embodiments, if the effective time or application time of different information differs, any one or more of the following solutions can be considered. -Solution-1: Each piece of information will determine its own validity period or application period individually; -Solution-2: The validity period or application period of one or more pieces of information is determined based on the validity period or application period of the switching instruction or command. In some embodiments, the switching instruction or command is included in the information. In some embodiments, with respect to information that may be verified or applied before the validity or application time of a switching instruction or command, at least one of this information is applied or verified based on one or more of the following rules: ◆Rule-1: Any one or more pieces of information may be discarded, or deemed invalid or inapplicable, as long as they are information that could be made effective or applied before the effective or effective time of a switching instruction or command. ◆Rule-2: A timer is configured for information that may be activated or applied before the effective or effective time of a switching instruction or command. In some embodiments, all information that may be activated or applied before the effective or effective time of a switching instruction or command has the same timer. In some embodiments, different information that may be verified or applied before the effective or effective time of a switching instruction or command has different timers. If the timer expires before the effective or effective time of a switching instruction or command, the information corresponding to the timer may be discarded or considered invalid or unapplicable. If the timer has not expired before the effective or effective time of a switching instruction or command, the information may be applied or considered to have been activated or effective from the effective or effective time of the switching instruction. In some embodiments, the effective or effective time of information that may be activated or applied before the effective or effective time of a switching instruction or command may be set to 0, or the information may be applied or considered to have been activated or effective from its own effective or effective time. ◆Rule-3: Information that was active before the switching instruction or command became active remains active. In some embodiments, when the switching instruction or command becomes active, the information may be applied to the first transmission or reception to / from the target cell. In some embodiments, the information may be a TCI status instruction or a beam instruction. In some embodiments, with respect to information that is enabled, applied, or becomes enabled after the effective or effective time or effective time of a switching instruction or command, one or more of the following methods may be considered: ◆Method-1: Information that becomes effective, applied, or effective after a switch instruction or command is enabled, or after a cell switch is completed, may be applied after the information has been applied; ◆Method 2: Information that is enabled, applied, or becomes effective after a switch instruction or command is enabled, or after a cell switch is completed, may be enabled or applied immediately. ◆Method-3: The application time or time gap for information that may become effective or applicable after a switch instruction or command is enabled, or after a cell switch is completed, can be set to 0. -Solution-3: One or more pieces of information indicated, triggered, or updated by any one or more signaling can be applied based on the maximum time gap or application time, or the minimum time gap or application time, or a predefined time gap or application time, or the maximum UE capability, or the minimum UE capability, or the reported UE capability, or the signaling instruction. -The above methods or solutions, in whole or in part, can be used independently or in combination.

[0091] In some embodiments, the information within the signal transmission includes a beam instruction that identifies a beam for transmission or reception to or from a target cell, a transmission configuration instruction (TCI) status instruction that identifies a reference signal associated with the target cell, and / or a switching command that indicates communication for performing a handover between the source cell and the target cell.

[0092] (X. Examples of systems and devices)

[0093] Figure 5 shows a typical block diagram of a hardware platform 500 that may be part of a network device (e.g., a base station) or a communication device (e.g., a user device (UE)). The hardware platform 500 includes at least one processor 510 and a memory 505 having stored instructions. Runtime instructions from the processor 510 configure the hardware platform 500 to perform various flowcharts and operations described in the various embodiments described in this patent document. A transmitter 515 transmits or sends information or data to another device. For example, a network device transmitter may send a message to a user device. A receiver 520 receives information or data transmitted or sent by another device. For example, a user device may receive a message from a network device.

[0094] The implementation forms described above apply to wireless communications. Figure 6 shows an example of a wireless communications system (e.g., a 5G or NR cellular network) including a base station 620 and one or more user equipment (UEs) 611, 612, 613. In one embodiment, the UE accesses a BS (e.g., the network) using a communication link to the network (sometimes called the uplink direction, as indicated by dashed arrows 631, 632, 633), which then enables subsequent communication from the BS to the UE (sometimes called the downlink direction, as indicated by arrows 641, 642, 643, in the direction from the network to the UE). In one embodiment, the BS sends information to the UE (sometimes called the downlink direction, as depicted by arrows 641, 642, 643), which then enables subsequent communication from the UE to the BS (sometimes called the uplink direction, as indicated by dashed arrows 631, 632, 633, in the direction from the UE to the BS). UEs can include, for example, smartphones, tablets, mobile computers, machine-to-machine (M2M) devices, and Internet of Things (IoT) devices.

[0095] The following technical solutions may be employed by several preferred embodiments.

[0096] 1. A wireless communication method (e.g., the flowchart shown in Figure 3) comprising: a communication device receiving a signal transmission containing information to be used for one or more of the following: a handover of the communication device from a serving cell to a target cell or candidate cell, or communication between the communication device and the target cell or candidate cell (302); and the communication device performing an action using the information (304).

[0097] 2. Performing an action is a method of Solution 1, which includes applying information to start from a specific time or performing communication using the information.

[0098] 3. Either method 1-2, where the signal transmission includes different information applied to start from different specific times, or the signal transmission includes different information applied to start from the same specific time.

[0099] 4. The information includes one or more of the cell switching instruction and transmission configuration instruction (TCI) states, and depending on the information received in signal transmission, the operation is to apply the cell switching instruction and TCI state instruction to start from a specific time, to interpret the TCI state instruction as a cell switching instruction and apply the TCI state instruction to start from a specific time, to continue applying the TCI state instruction after applying the cell switching instruction or after the cell switching is completed, to apply the TCI state instruction at the same time as applying the cell switching instruction, to use a rule to determine the time for which the TCI state instruction is applied after applying the cell switching instruction or after the cell switching is completed, after applying the cell switching instruction or Method of Solution 1, which includes one or more of the following: setting a time gap of 0 for applying TCI status after cell switching is complete; applying a TCI status indicator at a specific time after applying a cell switching instruction or after cell switching is complete; applying a TCI status indicator after a time gap after applying a cell switching instruction or after cell switching is complete; using a rule for determining the time to use a TCI status indicator due to receiving a TCI status indicator after applying a cell switching instruction or after cell switching is complete; and using a TCI status indicator at another specific time due to receiving a TCI status indicator after applying a cell switching instruction or after cell switching is complete.

[0100] 5. A specific time is when the first information contained in the signal transmission is applied, and a second time is when the second information contained in the signal transmission is applied, and the communication device, in response that the specific time is later than the second time, performs one or more of the following actions: continue to apply the second information, determine that the second information is invalid, determine that the second information cannot be applied, apply the second information after the specific time, apply the second information at the time when the first information is applied, or set the time when the second information is applied to 0, one of the methods of Solution 1 to 3.

[0101] 6. One of the methods of Solution 1 to 4, wherein the communication device, in response to the communication device receiving the second information after a specific time in which the first information applies, performs one or more of the following: determining a second time in which the second information applies based on an existing rule; determining a second time in which the second information applies based on a time gap to a specific time in which the first information applies as indicated or updated by signaling; determining a second time in which the second information applies based on a time gap to a reference point; or determining that the second information should not be received within a time gap after a specific time in which the first information applies as indicated or updated by signaling.

[0102] 7. Any one of solutions 1 to 4, further comprising: the communication device deciding that it should not receive a second information indicated or updated by signaling before a specific time in which the first information indicated or updated by signaling is applicable; or the communication device deciding that the second information is invalid in response to the communication device receiving the second information indicated or updated by signaling before a specific time in which the first information indicated or updated by signaling is applicable; or discarding the second information in response to the communication device receiving the second information indicated or updated by signaling before a specific time in which the first information indicated or updated by signaling is applicable.

[0103] 8. The specific time is determined by one of the solutions 1 through 7, based on the time gap relative to the reference point.

[0104] 9. The signal transmission involves different information with different reference points, or the signal transmission involves different information with the same reference point, using any one of the methods in Solution 1, 6, or 8.

[0105] 10. The method of Solution 8 or 9, wherein the reference point includes one or more of the following: a starting or ending position when a communication device receives a signal transmission indicating or updating information; a starting or ending position when a communication device receives information indicated or updated by a signal transmission; a starting or ending position when a communication device transmits acknowledgment information in response to a signal transmission indicating or updating information; or a starting or ending position when a communication device transmits acknowledgment information in response to information indicated or updated by a signal transmission.

[0106] 11. The start or end position includes the start or end of a time slot, or the start or end of a symbol, as per Solution 10.

[0107] 12. Any one of the solutions 1 to 11, further comprising one or more of the following: the reference point is determined based on the first subcarrier interval (SCS) of the source cell or the second SCS of the target cell in response to the first SCS being different from the second SCS; or the reference point is determined considering one or more of the timing difference between the source cell and the target cell, the first timing advance (TA) of the source cell, or the second TA of the target cell in response to the source cell being asynchronous with the target cell.

[0108] 13. The time gap is the duration that contains the minimum value of the time gap; or, the time gap is the duration in the time domain, according to method 4, 6, or 8 of solution 4, 6, or 8.

[0109] 14. The time gap or the minimum value of the time gap is determined based on any one or more of at least one current value; one or more additional values added to at least one value from the current value set; at least one current value added with a specific value or a set of specific values; at least one current value scaled by a scaling factor; a radio resource control (RRC) signaling configuration; a media access control - control element (MAC CE) signaling instruction; a downlink control information (DCI) signaling instruction; a predetermined value; the capabilities of a communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; the value of a variable T1; or any one or more of P1 and P2, according to the method of Solution 4, 6, or 8.

[0110] 15. The time gap or the granularity of the time gap is in symbols, slots, sub - frames, frames, nanoseconds, microseconds, milliseconds, or seconds, according to any one method from Solution 4 to 14.

[0111] 16. The signaling includes downlink control information (DCI) or media access control - control element (MAC CE), according to any one method from Solution 1 to 15.

[0112] 17. The positive response information is transmitted by the communication device to any one or more of the source cell or the target cell, according to the method of Solution 10.

[0113] 18. The method of Solution 1 further includes using the information received from the serving cell for communication with the target cell or candidate cells.

[0114] 19. The use depends on the relevance between the information received from the serving cell and the information from the target cell or candidate cells, according to the method of Solution 18.

[0115] 20. The information includes one or more of the following methods from Solution 1 to 19: Transmission Configuration Instruction (TCI) status, beam instruction, switching command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switching instruction, timing advance (TA), timing difference between serving cell and target cell, relationship between reference signal and cell, timer, instruction related to common information to be used for target cell or candidate cell, channel / signal transmission or reception, and reference signal.

[0116] 21. A method of Solution 1 or 20, which includes enabling or activating a first parameter of the target cell or candidate cell after applying or completing the switching, or using or activating a second parameter of the target cell or candidate cell after receiving a switching command or cell switching instruction.

[0117] 22. The timing advance (TA) or timing difference is obtained by one or more of the following methods of Solution 20: based on instructions from a network device, based on an L1 measurement, based on a random access channel (RACH) procedure, or based on a predetermined method, where the timing difference is obtained by subtracting a second TA value associated with the target cell from a first TA value associated with the source cell.

[0118] 23. The units of N1 or X or T1 or P1 or P2 or offset are subframes, slots, symbols, frames, or time units measured in nanoseconds, microseconds, milliseconds, or seconds, according to Solution 14.

[0119] 24. The offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a certain value, Solution 14 method.

[0120] 25. A wireless communication method (402) comprising a network device transmitting a signal transmission containing information to be used for one or more of the following: handover of a communication device from a serving cell to a target cell or candidate cell, or communication between a communication device and a target cell or candidate cell.

[0121] 26. The method of signal transmission causing a communication device to perform an action includes applying information to start from a specific time, or using information to perform communication, among other solutions.

[0122] 27. The signal transmission includes different information applied to start from different specific times, or the signal transmission includes different information applied to start from the same specific time, in any of the methods of Solutions 25-26.

[0123] 28. The information includes one or more of the cell switching instruction and transmission configuration instruction (TCI) states, and depending on the information received in signal transmission, the operation is to apply the cell switching instruction and TCI state instruction to start from a specific time, to interpret the TCI state instruction as a cell switching instruction and apply the TCI state instruction to start from a specific time, to continue applying the TCI state instruction after applying the cell switching instruction or after the cell switching is completed, to apply the TCI state instruction at the same time as applying the cell switching instruction, to use a rule to determine the time for which the TCI state instruction is applied after applying the cell switching instruction or after the cell switching is completed, after applying the cell switching instruction or Solution 25 methods include one or more of the following: setting a time gap of 0 for applying TCI status after cell switching is complete; applying a TCI status indicator at a specific time after applying a cell switching instruction or after cell switching is complete; applying a TCI status indicator after a time gap after applying a cell switching instruction or after cell switching is complete; using a rule for determining the time to use a TCI status indicator due to receiving a TCI status indicator after applying a cell switching instruction or after cell switching is complete; and using a TCI status indicator at another specific time due to receiving a TCI status indicator after applying a cell switching instruction or after cell switching is complete.

[0124] 29. A specific time is when the first information contained in the signal transmission is applied, and a second time is when the second information contained in the signal transmission is applied, and the communication device, in response that the specific time is later than the second time, performs one or more of the following actions: continue to apply the second information, determine that the second information is invalid, determine that the second information cannot be applied, apply the second information after the specific time, apply the second information at the time when the first information is applied, or set the time when the second information is applied to 0, one of the methods of solutions 25 to 27.

[0125] 30. One of the methods of Solutions 25 to 28, wherein the signaling causes the communication device to perform one or more of the following in response to the communication device receiving the second information after a specific time in which the first information applies: determine a second time in which the second information applies based on an existing rule; determine a second time in which the second information applies based on a time gap to a specific time in which the first information applies as indicated or updated by the signaling; determine a second time in which the second information applies based on a time gap to a reference point; or determine that the second information should not be received within a time gap after a specific time in which the first information applies as indicated or updated by the signaling.

[0126] 31. One of the solutions 25 to 28, wherein the signaling causes the communication device to decide that it should not receive the second information indicated or updated by the signaling before a specific time in which the first information indicated or updated by the signaling is applicable, or, in response to the communication device receiving the second information indicated or updated by the signaling before a specific time in which the first information indicated or updated by the signaling is applicable, to decide that the second information is invalid, or, in response to the communication device receiving the second information indicated or updated by the signaling before a specific time in which the first information indicated or updated by the signaling is applicable, to discard the second information.

[0127] 32. The specific time is determined by one of the solutions 25 to 31, by the time gap relative to the reference.

[0128] 33. The signal transmission involves different information with different reference points, or the signal transmission involves different information with the same reference point, using any one of the methods in Solution 25, 30, or 32.

[0129] 34. The method of Solution 32 or 33, wherein the reference point includes one or more of the following: a starting or ending position when a communication device receives a signal transmission indicating or updating information; a starting or ending position when a communication device receives information indicated or updated by the signal transmission; a starting or ending position when a communication device transmits acknowledgment information in response to a signal transmission indicating or updating information; or a starting or ending position when a communication device transmits acknowledgment information in response to information indicated or updated by the signal transmission.

[0130] 35. The start or end position includes the start or end of a time slot, or the start or end of a symbol, in Solution 34.

[0131] 36. Any one of the methods of Solutions 25 to 35, further comprising one or more of the following: the reference point is determined based on the first subcarrier interval (SCS) of the source cell or the second SCS of the target cell in response to the first SCS being different from the second SCS; or the reference point is determined considering one or more of the timing difference between the source cell and the target cell, the first timing advance (TA) of the source cell, or the second TA of the target cell in response to the source cell being asynchronous with the target cell.

[0132] 37. The time gap is the duration that contains the minimum value of the time gap; or, the time gap is the duration in the time domain, according to the methods of solutions 28, 30, or 32.

[0133] 38. The time gap or the minimum value of the time gap is determined based on any one or more of at least one current value; one or more additional values added to at least one value from the current value set; the result of adding a specific value or a set of specific values to at least one current value; at least one current value scaled by a scaling factor; a radio resource control (RRC) signaling configuration; a media access control - control element (MAC CE) signaling indication; a downlink control information (DCI) signaling indication; a predetermined value; the capabilities of a communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; the value of a variable T1; or any one or more of P1 and P2, according to the method of solution 28, 30, or 32.

[0134] 39. The time gap or the granularity of the time gap is in symbols, slots, sub - frames, frames, nanoseconds, microseconds, milliseconds, or seconds, according to the method of any one of solutions 28 to 38.

[0135] 40. The signaling includes downlink control information (DCI) or media access control - control element (MAC CE), according to the method of any one of solutions 25 to 39.

[0136] 41. The positive response information is transmitted by a communication device to any one or more of the source cell or the target cell, according to the method of solution 34.

[0137] 42. The method of solution 25 further includes using the information received from the serving cell for communication with the target cell or candidate cells.

[0138] 43. The use depends on the relevance between the information received from the serving cell and the information from the target cell or candidate cells, according to the method of solution 42.

[0139] 44. The information includes one or more of the following methods from Solution 25 to 43: transmission configuration instruction (TCI) status, beam instruction, switching command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switching instruction, timing advance (TA), timing difference between serving cell and target cell, relationship between reference signal and cell, timer, instruction related to common information to be used for target cell or candidate cell, channel / signal transmission or reception, and reference signal.

[0140] 45. A method of Solution 25 or 44, which includes enabling or activating a first parameter of a target cell or candidate cell after applying or completing a switch, or using or activating a second parameter of a target cell or candidate cell after receiving a switch command or cell switch instruction.

[0141] 46. ​​A method of Solution 44 in which the timing advance (TA) or timing difference is provided by one or more of the following: instructions from a network device, based on an L1 measurement obtained by subtracting a second TA value associated with a target cell from a first TA value associated with a source cell, based on a random access channel (RACH) procedure, or based on a predetermined method.

[0142] 47. The units of N1 or X or T1 or P1 or P2 or offset are subframes, slots, symbols, frames, or units of time measured in nanoseconds, microseconds, milliseconds, or seconds, according to Solution 38.

[0143] 48. The offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a certain value, solution 38 ways.

[0144] 49. A device for wireless communications having a processor configured to implement one or more of the methods described in Solutions 1 through 48.

[0145] 50. A non-temporary computer-readable program storage medium storing code, the code, when executed by a processor, causes the processor to perform one or more of the methods described in Solutions 1 to 48.

[0146] The exemplary embodiments 1-9 described above provide further details of the technical solutions listed above. In this document, the term “typical” is used to mean “exemplary” and does not mean “ideal or preferred embodiment” unless otherwise specified.

[0147] Some embodiments described herein are described in a general context of a method or process that, in one embodiment, can be implemented by a computer program product embodied on a computer-readable medium, which includes computer-executable instructions, such as program code executed by a computer in a networked environment. Computer-readable media may include, but are not limited to, removable and non-removable storage devices, such as read-only memory (ROM), random-access memory (RAM), compact discs (CDs), and digital versatile discs (DVDs). Thus, computer-readable media may include non-temporary storage media. Generally, a program module may include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. Computer-executable instructions or processor-executable instructions, associated data structures, and program modules represent examples of program code for performing steps of the methods disclosed herein. A particular sequence of such executable instructions or associated data structures represents an example of corresponding behavior for implementing the functionality described in such steps or processes.

[0148] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or a combination thereof. For example, a hardware circuit implementation may include, for instance, individual analog and / or digital components integrated as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may also be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate array (FPGA) devices. Some implementations may additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor having an architecture optimized for the operational requirements of digital signal processing associated with the functionalities disclosed in this application. Similarly, various components or sub-components within each module may be implemented in software, hardware, or firmware. Connectivity between modules and / or between components within modules may be provided using any of the connectivity methods and media known in the art, including but not limited to communication over the Internet, wired, or wireless networks using appropriate protocols.

[0149] While this document contains many details, these should not be interpreted as limitations on the scope of the claimed invention or what can be claimed, but rather as descriptions of features specific to particular embodiments. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented separately or in any suitable partial combination in multiple embodiments. Furthermore, features may be described above as operating in a particular combination, and may be initially claimed as such, but one or more features from a claimed combination may, in some cases, be removed from the combination, and the claimed combination may be subject to partial combinations or variations of partial combinations. Similarly, while operations are illustrated in a particular order in the drawings, this should not be interpreted as requiring that such operations be performed in a specific order shown, or in a sequential order, or that all illustrated operations be performed, in order to achieve the desired result.

[0150] Only a few implementations and examples are described, and other implementations, extensions, and variations can be made based on those described and illustrated in this disclosure.

Claims

1. A wireless communication method, wherein the wireless communication method is The communication device receives a media access control—control element (MAC CE) signal transmission from the serving cell, which includes information including one or more of the following: transmission configuration instruction (TCI) status, cell identifier (ID) of a candidate cell or target cell, random access procedure-related information, timing advance (TA), channel / signal transmission or reception, or reference signal. The communication device performs an operation using the information. Includes, The execution of the aforementioned operation is Performing transmission or reception on the target cell or candidate cell using the aforementioned TCI state. Includes, The TCI state is applied from a specific time determined by the time gap relative to the reference point or the minimum value of the time gap, or simultaneously with the application of a cell switching instruction. A wireless communication method in which the reference point is the start or end position at which the communication device transmits acknowledgment information corresponding to the MAC CE signal transmission.

2. A wireless communication method, wherein the wireless communication method is Network devices transmit media access control—control element (MAC CE) signal transmissions to communication devices, which include information such as transmission configuration instruction (TCI) status, cell identifiers (IDs) of candidate or target cells, random access procedure-related information, timing advance (TA), channel / signal transmission or reception, or reference signals. The network device performs an operation using the information. Includes, The execution of the aforementioned operation is Performing transmission or reception on the target cell or candidate cell using the aforementioned TCI state. Includes, The TCI state is applied from a specific time determined by the time gap relative to the reference point or the minimum value of the time gap. A wireless communication method in which the reference point is the start or end position at which the communication device transmits acknowledgment information corresponding to the MAC CE signal transmission.

3. The wireless communication method according to claim 1 or 2, wherein the signal transmission includes different information applied from different specific times or from the same specific time.

4. The wireless communication method according to claim 1 or 2, wherein the signal transmission includes different information having different reference points or the same reference point.

5. The reference point is determined based on the first subcarrier spacing (SCS) of the source cell or the second SCS of the target cell, in response to the first SCS being different from the second SCS; or The reference point is determined in response to the fact that the source cell is asynchronous with the target cell, by considering one or more of the following: the timing difference between the source cell and the target cell, the first timing advance (TA) of the source cell, or the second TA of the target cell. The wireless communication method according to claim 1 or 2, further comprising one or more of the following.

6. The time gap or the minimum value of the time gap is At least one current value; one or more additional values ​​added to at least one value from the current set of values; at least one current value plus a specific value or set of specific values; at least one current value scaled by a scaling factor; radio resource control (RRC) signal transmission configuration; medium access control-control element (MAC CE) signal transmission instruction; downlink control information (DCI) signal transmission instruction; a predetermined value; the capabilities of the communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; the value of variable T1; or one or more of P1 and P2. A wireless communication method according to claim 1 or 2, determined based on one or more of the following.

7. The wireless communication method according to claim 1 or 2, wherein the granularity of the time gap is a symbol, a slot, a subframe, a frame, a nanosecond, a microsecond, a millisecond, or a second.

8. The aforementioned timing advance (TA) is, Instructions from network devices; L1 measurement value; Random Access Channel (RACH) procedure; or prescribed method A wireless communication method according to claim 1 or 2, obtained by any one or more of the following.

9. An apparatus for wireless communication comprising a processor configured to carry out the method of claim 1 or 2.

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