Application time for enhanced mobility in wireless communications

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 relates generally to digital wireless communications. [Background technology]

[0002] Mobile communication technologies are moving the world towards an increasingly connected and networked society. Compared to existing wireless networks, next-generation systems and wireless communication technologies will be required to address the characteristics of a much wider range of use cases and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communications standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP®). LTE Advanced (LTE-A) is an enhancement to the LTE standard. The fifth-generation wireless system, known as 5G, evolves from the LTE and LTE-A wireless standards and is committed to supporting higher data rates, a larger number of connections, ultra-low latency, high reliability, and other emerging business needs. Summary of the Invention [Means for solving the problem]

[0004] Techniques are disclosed for identifying time domain locations (eg, time slots) where user equipment (UE) may 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 that 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 cell or a candidate cell, or communication between the communication device and the target cell or the candidate cell, and performing, by the communication device, an action using the information.

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

[0007] In yet another exemplary aspect, the methods described above are embodied in the form of processor-executable code and stored on a non-transitory computer-readable storage medium, the code contained on the computer-readable storage medium, when executed by a processor, causing the processor to perform the methods described in this patent document.

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

[0009] These and other aspects and their implementations are described in more detail in the drawings, specification, and claims. [Brief explanation of the drawings]

[0010] [Figure 1A] FIG. 1A illustrates an example of application times for the Transmission Configuration Indication (TCI) status indications disclosed in this document.

[0011] [Figure 1B] FIG. 1B shows several examples of application times for a user equipment to apply a switching command or a TCI status indication for an L1 / L2 mobility scenario.

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

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

[0014] [Figure 3] FIG. 3 shows an exemplary flow chart for wireless communication.

[0015] [Figure 4] FIG. 4 shows an exemplary flow chart for wireless communication.

[0016] [Figure 5] FIG. 5 shows an exemplary block diagram of a hardware platform that may be part of a network or communications device.

[0017] [Figure 6] FIG. 6 illustrates an example of wireless communication including a base station (BS) and user equipment (UE) according to some implementations of the disclosed technology. DETAILED DESCRIPTION OF THE INVENTION

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

[0019] (Introduction)

[0020] When a wireless device, such as a user equipment (UE), moves from the coverage area of one cell to another, at some point a serving cell change must occur. Currently, serving cell changes are triggered by L3 measurements and performed by radio resource control (RRC) signaling-triggered reconfiguration, which involves synchronization for primary cell (PCell) and primary and secondary cell (PSCell) changes as well as release and addition for secondary cells (SCells), if applicable. These cases involve a full L2 (and L1) reset, which can lead to longer latency, higher overhead, and / or longer disruption than beam switching mobility. One of the goals of L1 / L2 mobility enhancements is to enable serving cell changes via L1 / L2 signaling to reduce latency, overhead, and disruption.

[0021] Current technology needs improvement to achieve fast serving cell changes via L1 / L2 signaling to reduce latency, overhead, and / or interruption time. An exemplary technique for such improvement may include adjusting or specifying application times for information such as one or more of a switch command, a TCI status indication, etc. in inter-cell mobility scenarios. This is because legacy application times may not be sufficient to switch information (including a criterion for determining an information application time or time gap, which is the duration from when a communication device receives the information or when the communication device explicitly or implicitly transmits acknowledgment information corresponding to the information to when the communication device starts applying the information) from a serving cell to a target cell. In some embodiments, the time gap or duration may be replaced with a minimum time gap or duration, or the time gap or duration may be at least the first symbol or slot or subframe or frame that is the minimum time gap or duration after the criterion. This patent document provides at least some possible solutions to the above problem.

[0022] In some embodiments, the term "application time" of a beam indication can be described as the time at which a user equipment (UE) applies the indicated beam, starting from the first slot that is at least BeamAppTime_r17 symbols after the reception of the last symbol of the physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH), as shown in FIG. 1A. Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information corresponding to downlink control information (DCI) carrying a TCI status indication without a downlink (DL) allocation can be transmitted on the PUCCH or PUSCH; or HARQ-ACK information corresponding to physical downlink shared channel (PDSCH) scheduling due to a DCI carrying a TCI status indication can be transmitted on the PUSCH. The aforementioned HARQ-ACK information corresponding to DCI carrying a TCI status indication without a DL allocation or PDSCH scheduling due to a 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, 336 symbols.

[0023] 1A illustrates an example of application times for TCI state indications according to some embodiments, where the horizontal axis represents time. As shown, while TCI state 1 is applied, DCI carrying TCI state 2 is received. Some time later, HARQ-ACK information is received. Y1 time after the end of the HARQ-ACK information transmission, in the subsequent slot, TCI state 2 is applied.

[0024] In some embodiments, the term "application time" of the indicated mapping between the TCI state and the codepoint of the DCI field "transmission configuration indication" may be described as follows: when the UE is able to transmit a PUCCH with HARQ-ACK information in slot n corresponding to a PDSCH carrying an activation command, the indicated mapping between the TCI state and the codepoint of the DCI field "transmission configuration indication" is applied to slot n.

number

number

[0025] However, in Release 18, for some subjects such as L1 / L2 mobility enhancement, or multi-panel, or multi-TRP (transmitting / receiving point), or carrier aggregation (CA) scenarios, it may be useful to take into account one or more of the following descriptions of the information application time, or descriptions of criteria for the information application time or time gap or set of time gaps, in order to determine the information application time.

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

[0027] In various embodiments, any one or more pieces of information may be indicated by any one or more of Medium Access Control Element (MAC CE) signaling, DCI signaling, RRC signaling, or may be activated or deactivated or updated, or may be predefined.

[0028] In some embodiments, the switching command may be or include any one or more of a TCI state indication, a beam indication, an indication to trigger a random access channel (RACH), a timing advance, a timing difference between the serving cell and the target cell, a timer, signaling conveying any one or more of the above.

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

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

[0031] The TCI state indication and / or beam indication may enable the UE to achieve mobility. The TCI state indication may indicate to the UE that the UE can switch from communication with the source cell to communication with the target cell. The TCI state indication includes a source reference signal (RS), and the source RS is associated with the target cell. When the UE receives the TCI state indication, the UE may determine that transmission or reception with the target cell is possible.

[0032] The beam indication may identify to a user equipment (UE) to use one or more beams to perform transmission or reception operations with the target cell.

[0033] In some embodiments, the switch 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 to the UE a timing advance value of the target cell.

[0034] I. ILLUSTRATIVE EMBODIMENT 1

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

[0036] In a particular scenario, if multiple time gap values or minimum time gap values to be applied for the information are supported, different time gap values or minimum time gap values are applied based on the UE capabilities.

[0037] In some embodiments, information (e.g., one or more TCI status indications or TCI status updates, switch commands) is taken as an example to illustrate a method for determining or describing a time gap or a minimum time gap for determining an application time for the information. It should be noted that the related method or rule is 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 legacy protocols) or minimum time gap value, which is unique and not the legacy time gap or BeamAppTime-r17 defined in Rel-17. In different embodiments, the new time gap or minimum time gap value is determined by UE capabilities or configured by one or more of predefined RRC signaling, MAC CE signaling, and / or DCI signaling. - Option-2: A new time gap or minimum time gap value is determined by reusing any 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 the 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 specified in Release 17. Optionally, the additional values are to make it easier to apply the information in the candidate or target cell. Option-4: The new time gap or minimum time gap value is determined by one or more of plus and / or minus 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 any one or more of the minimum time values specified in Release 17 scaled by a scaling factor. In some embodiments, the scaling factor is determined or predefined based on the SCS difference between the source cell and the target cell. Option 6: The new time gap or minimum time gap value is determined by one or more of plus and / or minus and / or multiplying and / or dividing the minimum time value specified in Release 17 scaled by a scaling factor by an offset value or set of offset values. Option 7: The new time gap or minimum time gap value is determined by one or more of the following: plus and / or minus and / or multiplying and / or dividing the minimum time value specified in Release 17 scaled by the scaling factor by the timing difference. Option 8: The new time gap or minimum time gap value is determined by one or more of the minimum time value specified in Release 17 plus and / or minus and / or multiplying and / or dividing by the timing difference. Option 9: The new time gap or minimum time gap value is determined by one or more of the minimum value specified in Release 17 scaled by a scaling factor, plus and / or minus and / or multiplying and / or dividing by the timing difference, plus and / or minus and / or multiplying and / or dividing by an offset value or set of offset values.

[0039] In some embodiments, the units of the minimum time values specified 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 the following: 1, 2, 4, 7, 14, 28, 42, 56, 70, 84, 98, 112, 224, 336 symbols. The time length value specified in Release 17 is at least the first slot that is the minimum time value after the reference.

[0041] Optionally, the new duration may be at least the first symbol or slot or subframe or frame of 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 values specified in Release 17 scaled with a scaling factor or the minimum time values specified in Release 17 may be replaced by minimum time values for scenarios without taking into account the SCS difference and / or timing difference between the serving cell and the target cell.

[0044] In some embodiments, the units of the offset value or timing difference may be symbols, slots, subframes, frames, or any one or more of nanoseconds, microseconds, milliseconds, and seconds.

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

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

[0047] II. Exemplary Embodiment 2

[0048] Embodiment 2 describes an exemplary method for defining criteria for determining the time to apply information, such as any one or more of a TCI status indication, a beam indication, a TCI status update, or a switch command.

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

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

[0051] In some embodiments, the criteria for determining the application time for information can be any one or more of the following alternatives: Alternative 1: the first symbol on which information or signaling carrying information is transmitted or received; Alternative 2: The last symbol in which information or signaling carrying information is transmitted or received; Alternative 3: Start of a slot during which information or signaling carrying information is transmitted or received; Alternative 4: End of a slot during which information or signaling carrying information is transmitted or received;

[0052] In some embodiments, performing communication may mean that signaling is transmitted or received by a base station or a UE. Alternative 5: The first symbol transmitted or received to initiate the information or acknowledgment information corresponding to the signaling carrying the information; Alternative 6: The last symbol transmitted or received to terminate the information or acknowledgment information corresponding to the signaling carrying the information; Alternative 7: Start of a slot in which information or acknowledgment information corresponding to a signaling carrying information is transmitted or received; Alternative 8: End of a slot in which information or acknowledgment information corresponding to a signaling carrying information is transmitted or received to terminate; Alternative 9: First symbol transmitted or received to start acknowledgment information corresponding to the information or signaling carrying the information. Optionally, the first symbol for transmitting or receiving the acknowledgment information is determined based on the SCS of the source cell. Alternative 10: The last symbol transmitted or received to terminate the acknowledgement information corresponding to the information or signaling carrying the information. In some embodiments, the last symbol transmitted or received to transmit the acknowledgement information is determined based on the SCS of the source cell. Alternative 11: Start of a slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received to begin. In some embodiments, the start of a slot in which acknowledgement information is transmitted or received is determined based on the SCS of the source cell. Alternative 12: End of a slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received to terminate. In some embodiments, the end of a slot in which acknowledgement information is transmitted or received is determined based on the SCS of the source cell. Alternative 13: First symbol transmitted or received to start acknowledgement information corresponding to information or signaling carrying information. In some embodiments, the first symbol for transmitting or receiving acknowledgement information is determined based on the SCS of the target cell. Alternative 14: The last symbol transmitted or received to terminate the acknowledgement information corresponding to the information or signaling carrying the information. In some embodiments, the last symbol transmitted or received to transmit the acknowledgement information is determined based on the SCS of the target cell. Alternative 15: Start of a slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received to begin. In some embodiments, the start of a slot in which acknowledgement information is transmitted or received is determined based on the SCS of the source cell and the target cell. Alternative 16: End of a slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received for the end of the slot. In some embodiments, the end of a slot in which acknowledgement information is transmitted or received is determined based on the SCS of the target cell.

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

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

[0055] The aforementioned offset value may be determined by any one or more of MAC CE signaling, DCI signaling, RRC signaling, pre-definition, offset from source cell with scaling factor.

[0056] 2A illustrates the location of an acknowledgment corresponding to information or signaling conveying information, the location being determined by an offset value after the start of the slot, where the information or signaling conveying information has been received from the target cell. In FIG. 2A, the horizontal axis represents time.

[0057] 2B shows the location of an acknowledgment corresponding to information or signaling conveying information, the location being determined by an offset value after the end of the slot, in which the information or signaling conveying information is received from the target cell. In FIG. 2B, the horizontal axis represents time. Alternative 17: First symbol transmitted or received to start acknowledgment information corresponding to information or signaling 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 18: The last symbol transmitted or received for terminating the information or acknowledgment information corresponding to the signaling carrying the information. In some embodiments, the last 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 19: Start of a slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received to begin. In some embodiments, the start of the slot in which acknowledgement information is transmitted or received is determined based on the SCS of the target cell and the timing difference between the source cell and the target cell. Alternative 20: End of slot in which acknowledgement information corresponding to information or signaling carrying information is transmitted or received for the start of the slot. In some embodiments, the end of the slot in which acknowledgement information is transmitted or received 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 the acknowledgement information corresponding to the information or signaling carrying the information is transmitted, the acknowledgement information may be some implicit information such as a channel / signal transmission or reception, an MSG1 transmission, an MSG3 transmission, an MSGA transmission, or an RS transmission. Alternative Example 21: The first symbol in the RS transmitted to the source cell and / or target cell to inform the base station or network of timing advance (TA) information. Optionally, the transmission of the RS can be considered as an acknowledgment of the information or signaling that carries the information. Alternative 22: The last symbol in the 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 the RS can be considered as an acknowledgment of the information or signaling carrying the information. Alternative 23: Start of slot in which RS is 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 the RS can be considered as an acknowledgment of the information or signaling carrying the information. Alternative 24: Start of a slot in which an RS is transmitted to a source cell and / or a target cell to inform a base station or network of TA information. In some embodiments, the transmission of the RS can be considered an acknowledgment of the information or signaling that carries the 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 a sounding reference signal SRS, a DMRS, an SSB, or a channel state information reference signal CSI-RS. In some embodiments, the rules, logic, or methods mentioned in any one or more of alternatives 1 to 20 can also be applied for the case where the acknowledgment is RS, MSG1, MSG3, or MSGA.

[0060] III. Exemplary Embodiment 3

[0061] In embodiment 3, an exemplary method for determining application time for information indicated or activated by MAC CE signaling is described.

[0062] When the MAC CE activates or indicates or updates information, or when the communication device receives the indicated or activated or updated information by MAC CE signaling in slot #n, the information may be applied starting or ending from the first slot or symbol that is at least the minimum time gap or time gap after the reference. (1) Criteria may be defined as any one or more of the following: - Scheme-1: Start of slot in which MAC CE is received by the communication device; - Scheme-2: End of slot where MAC is received by the communication device; - Scheme-3: First symbol in which MAC CE is received by the communication device; - Scheme-4: Last symbol in which MAC CE is received by the communication device; - Scheme-5: start of slot #m in which acknowledgement information corresponding to MAC CE signaling or PDSCH carrying MAC CE signaling is transmitted by the communication device; - Scheme-6: End of slot #m in which acknowledgement information corresponding to the PDSCH carrying MAC CE signaling is transmitted by the communication device; - Scheme-7: First symbol of acknowledgement information corresponding to the PDSCH carrying MAC CE signaling transmitted by the communication device. - Scheme-8: Last symbol of acknowledgement information corresponding to the PDSCH carrying MAC CE signaling transmitted by the communication device. Any 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 the A criterion. (2) The time gap or minimum time gap may be defined or determined by any 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 X multiplied by N1. -Method-2: The time gap or minimum time gap value may be determined by or defined as T1. Method 3: The time gap or minimum time gap value may be determined by X multiplied by N1 plus and / or minus and / or multiplying and / or dividing by an offset, or is defined as X multiplied by N1 plus and / or minus and / or multiplying and / or dividing by an offset. -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 or X or T1 or P1 or P2 or offset may be subframe, slot, symbol, frame, nanosecond, microsecond, millisecond, or second. where N1 or X or T1 or P1 or P2 or offset may be an integer greater than or equal to a particular value. Optionally, the particular value is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. Optionally, the particular value may 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 capabilities. -Here, N1 or X or T1 or P1 or P2 or offset may be predefined or fixed or configurable by any one or more of DCI signaling, MAC CE signaling, RRC signaling.

[0063] In some embodiments, any one or more of the rules or 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. ILLUSTRATIVE EMBODIMENT 4

[0065] Embodiment 4 describes another exemplary method for determining a beam for initial transmission to or initial reception from a target cell. (1) If an offset between reception of information indicated, triggered, or updated by signaling and a first transmission to or from the target cell, or an offset between reception of signaling indicating, triggering, or updating the information and a first transmission to or from the target cell, or an offset between transmission of information or acknowledgement information corresponding to signaling carrying the information and a 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 a first transmission from / to the target cell. In some embodiments, any one or more of a TCI state indication, a beam indication, or a switching command may be included in the information. Here, the 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 quasi-co-located with the RS with respect to the QCL used or included for the information in the last slot, or the beam receiving or transmitting a switching command or TCI status indication or beam indication, or one or more RSs used for DL synchronization, or a 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 receiving or transmitting information such as the switching command or TCI status indication or beam indication. In some embodiments, the association relationship or mapping between the reception or transmission of the beam from the serving cell and the reception or transmission of the beam from the target cell may be predefined or introduced or defined by any 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 signaling indicating, triggering, or updating the information and the first transmission to or from the target cell, or the offset between the transmission of information or acknowledgement information corresponding to signaling carrying the 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 state indication or beam indication indicated, triggered, or updated by signaling to receive / transmit the first transmission from / to the target cell, and optionally, any one or more of the TCI state indication, beam indication, or switching command may be included in the information. (3) 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 signaling indicating, triggering, or updating information and the first transmission to or from the target cell, or the offset between the transmission of information or acknowledgement information corresponding to signaling 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 the switching command or signaling does not include a TCI state 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 first transmission or reception to or from the target cell is quasi-co-located with the RS with respect to the QCL used for or included in the information in the latest slot. Alternatively, the default beam is a beam that receives or transmits information such as a switching command or one or more RSs used for DL sync, or a signaling-related PRACH; or the default beam is a beam for receiving / transmitting the first transmission from / to the target cell associated with a beam that receives or transmits information such as a switching command or a TCI status indication or beam indication. In some embodiments, the association relationship 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 can be predefined or introduced or specified by any one or more of RRC signaling, MAC CE signaling, or DCI signaling.

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

[0067] V. Illustrative Embodiment 5

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

[0069] Unlike some previous embodiments, this embodiment needs to consider the timing difference between the serving cell and the target cell when determining a reference, time gap, or minimum time gap value for applying a TCI state indication or beam indication for the first transmission or reception or switch command to / from the target cell, i.e., the timing difference can be introduced in determining a reference, time gap, or minimum time gap value for applying a TCI state indication or beam indication for the first transmission or reception or switch command to / from the target cell.

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

[0071] VI. Exemplary Embodiment 6

[0072] In embodiment 6, another exemplary method for determining the beam for initial transmission or reception from a target cell when the source cell and the target cell have different SCSs is described.

[0073] Unlike some of the previous embodiments, in this embodiment, when describing the criteria or time gap or minimum time gap value for applying information such as a TCI status indication or beam indication or switching command, a scaling factor is taken into consideration, and the scaling factor can be determined based on the SCS of the serving cell / SCS of the target cell.

[0074] VII. Exemplary Embodiment 7

[0075] Embodiment 7 describes an exemplary method for solving a problem related to an entity (or network device or cell) to which a UE sends acknowledgement information in an inter-cell mobility scenario.

[0076] The acknowledgement information may 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 acknowledgement information can be any one or more of: HARQ-ACK information corresponding to signaling conveying information; HARQ-ACK information corresponding to PDSCH scheduling by signaling conveying information; HARQ-ACK information corresponding to information indicated or triggered or updated by signaling, MSG1, MSG3, MSGA, RS, channel / signal.

[0078] In some embodiments, any one or more of the above of signaling, MSG1, MSG3, MSGA, RS, information or signaling conveying information indicated or triggered or updated by a channel / signal is applied or used in the target cell.

[0079] VIII. Exemplary Embodiment 8

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

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

[0082] In some embodiments, multiple application times can be described or implemented for specific scenarios, such as L1 / L2 mobility enhancement. In some embodiments, different application times are applied for UEs with different capabilities or different information for the target cell. In some embodiments, one application time can apply to any one or more of the 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 signalings applies the same timeline, application time, or validity time. In some embodiments, the application time, timeline, or validity time of the information can be determined based on the legacy application time specified in Rel-17, or the legacy application time + offset specified in Rel-17, or based on the new time gap. In some embodiments, the criteria for determining the start location of the timeline, application time, or time gap can reuse the legacy in Rel-17 or can 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 mentioned in embodiments 1 to 8.

[0085] In some embodiments, the information indicated or triggered or updated by the signaling can be applied starting from the first symbol or slot or subframe or frame that is a time gap or at least a minimum time gap after the reference. In some embodiments, the information includes a cell switch command or instruction, and / or a TCI state instruction or beam instruction. When the cell switch is completed or the cell switch command becomes effective, the applicable definition, rule, or application time of the beam instruction or TCI state for the target cell or candidate cell may reuse the rule or rule specified in Rel-17; or the applicable definition, rule, or application time of the beam instruction or TCI state for the target cell or candidate cell may be determined based on the first symbol, slot, subframe, or frame that is a time gap or at least a minimum time gap after the cell switch is completed or the cell switch command becomes effective; or the application time of the beam instruction or TCI state for the target cell or candidate cell is set to 0; or the beam instruction or TCI state for the target cell or candidate cell may become effective or be applied immediately; or the applicable definition, rule, or application time of the beam instruction or TCI state 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 or triggered or updated by signaling can have the same criteria for determining when to apply the information; or different information indicated or triggered or updated by signaling can have different criteria for determining when to apply the information.

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

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

[0089] In some embodiments, with regard to the case where the information indicated or triggered or updated by the signaling has the same reference, but different information indicated or triggered or updated by the signaling has different time gaps or minimum time gaps:

[0090] In some embodiments, if the validity or application times of different information are different, any one or more of the following solutions may be considered. - Solution-1: Each piece of information determines its own validity or application time individually; - Solution-2: The validity time or application time of one or more pieces of information is determined based on the validity time or application time of the switching instruction or command. In some embodiments, the information includes a switching instruction or command. In some embodiments, with respect to information that may be verified or applied prior to the effective or application time of a switching instruction or command, at least one of the information is applied or verified based on any one or more of the following rules: ◆Rule-1: As long as the information is valid or applicable before the validity or application time of the switching instruction or command, any one or more of the information may be discarded or may be deemed invalid or inapplicable. ◆ Rule-2: A timer is configured for information that may be enabled or applied before the effective time or application time of a switch instruction or command. In some embodiments, all information that may be enabled or applied before the effective time or application time of a switch instruction or command has the same timer. In some embodiments, different information that may be verified or applied before the effective time or application time of a switch instruction or command has different timers. If a timer expires before the effective time or application time of a switch instruction or command, the information corresponding to the timer can be discarded or deemed invalid or inapplicable. If a timer does not expire before the effective time or application time of a switch instruction or command, the information can be applied or deemed to be enabled or effective starting from the effective time or application time of the switch instruction. In some embodiments, the effective time or application time of information that may be enabled or applied before the effective time or application time of a switch instruction or command can be set as 0, or the information can be applied or deemed to be enabled or effective starting based on its own effective time or application time. ◆ Rule-3: Information that was valid before the switching instruction or command became effective remains valid. In some embodiments, when the switching instruction or command becomes effective, the information may apply to the first transmission or reception to / from the target cell. In some embodiments, the information may be a TCI state instruction or a beam instruction. In some embodiments, with regard to the information that is enabled or applied or becomes effective after the effective time or application time of the switching instruction or command, any one or more of the following methods may be considered: ◆Method-1: Information that is enabled, applied, or becomes effective after a switching instruction or command is enabled or after cell switching is completed can be applied after the application time of the information; ◆Method-2: Information that is enabled, applied, or becomes effective after a switching instruction or command is enabled or after cell switching is completed may be enabled or applied immediately. ◆Method-3: The application time or time gap of information that may be valid or applicable after a switching instruction or command becomes valid or after cell switching is completed can be set to 0. -Solution-3: One or more pieces of information indicated, triggered, or updated by any one or more signalings can be applied based on a maximum time gap or application time, or a minimum time gap or application time, or a predefined time gap or application time, or a maximum UE capability, or a minimum UE capability, or a reported UE capability, or a signaling instruction. All or some of the above methods or solutions can be used independently or in combination.

[0091] In some embodiments, the information in the signaling includes a beam indication identifying a beam for transmission or reception with the target cell, a transmission configuration indication (TCI) status indication identifying a reference signal associated with the target cell, and / or a switch command indicating communication to perform a handover between the source cell and the target cell.

[0092] (X. Examples of Systems and Devices)

[0093] FIG. 5 shows an exemplary 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., user equipment (UE)). The hardware platform 500 includes at least one processor 510 and a memory 505 having stored instructions. The instructions, when executed by the processor 510, configure the hardware platform 500 to perform the operations described in the various flowcharts and various embodiments described in this patent document. The transmitter 515 transmits or sends information or data to another device. For example, a network device transmitter can send a message to a user equipment. The receiver 520 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network device.

[0094] The above-described implementations apply to wireless communications. Figure 6 illustrates 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 equipments (UEs) 611, 612, 613. In one embodiment, the UE accesses a BS (e.g., a network) using a communications link to the network (sometimes referred to as the uplink direction, as indicated by dashed arrows 631, 632, 633), which then enables subsequent communications from the BS to the UE (sometimes referred to as the downlink direction, as indicated by arrows 641, 642, 643 in the network-to-UE direction). In one embodiment, the BS sends information to the UE (sometimes referred to as the downlink direction, as depicted by arrows 641, 642, 643), which enables subsequent communications from the UE to the BS (sometimes referred to as the uplink direction, as indicated by dashed arrows 631, 632, 633). The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, and the like.

[0095] The following technical solutions may be adopted by some preferred embodiments.

[0096] 1. A wireless communication method (e.g., a flowchart depicted in FIG. 3 ) comprising: 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 cell or candidate cell, or communication between the communication device and the target cell or candidate cell (302); and performing, by the communication device, an action using the information (304).

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

[0098] 3. The method of any of Solutions 1-2, wherein the signaling includes different information that is applied to start from different specific times, or the signaling includes different information that is applied to start from the same specific time.

[0099] 4. The information includes one or more of a cell switch indication and a transmission configuration indication (TCI) state, and depending on the information received in the signaling, the operation includes applying the cell switch indication and the TCI state indication to start from a specific time, interpreting the TCI state indication to be a cell switch indication and applying the TCI state indication to start from a specific time, continuing to apply the TCI state indication after applying the cell switch indication or after completing the cell switch, applying the TCI state indication simultaneously with applying the cell switch indication, using a rule for determining the time at which the TCI state indication is applied, after applying the cell switch indication or after completing the cell switch, The method of Solution 1, including one or more of: setting a time gap for applying a TCI state after completing a cell switch to 0; applying a TCI state indication at a specific time after applying a cell switch indication or completing a cell switch; applying a TCI state indication after a time gap after applying a cell switch indication or completing a cell switch; using a rule for determining a time for using a TCI state indication due to receiving a TCI state indication after applying a cell switch indication or completing a cell switch; and using a TCI state indication at another specific time due to receiving a TCI state indication after applying a cell switch indication or completing a cell switch.

[0100] 5. The method of any one of Solutions 1 to 3, wherein the specific time is when first information included in the signaling is applied and the second time is when second information included in the signaling is applied, and the communications device, in response to the specific time being later than the second time, performs any one or more of: continuing to apply the second information, determining that the second information is invalid, determining that the second information cannot be applied, applying the second information after the specific time, applying the second information at the time that the first information is applied, or setting the time that the second information is applied as 0.

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

[0102] 7. The method of any one of Solutions 1 to 4, further comprising: determining, by the communication device, that the second information indicated or updated by signaling should not be received before the specific time at which the first information indicated or updated by signaling applies; or determining, by the communication device, in response to the communication device receiving the second information indicated or updated by signaling before the specific time at which the first information indicated or updated by signaling applies, that the second information is invalid; or discarding the second information in response to the communication device receiving the second information indicated or updated by signaling before the specific time at which the first information indicated or updated by signaling applies.

[0103] 8.Any one of solutions 1 to 7, where the specific time is determined by the time gap relative to the reference.

[0104] 9. The method of any one of Solutions 1, 6 or 8, wherein the signaling includes different information with different reference points, or the signaling includes different information with the same reference point.

[0105] 10. The method of Solution 8 or 9, wherein the reference point includes one or more of: a start position or an end position when the communication device receives signaling indicating or updating information; a start position or an end position when the communication device receives information indicated or updated by signaling; a start position or an end position when the communication device transmits acknowledgement information in response to signaling indicating or updating information; or a start position or an end position when the communication device transmits acknowledgement information in response to information indicated or updated by signaling.

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

[0107] 12. The method of any one of Solutions 1 to 11, further comprising: determining the reference point based on a first subcarrier spacing (SCS) of the source cell or a second SCS of the target cell in response to the first SCS being different from the second SCS; or determining the reference point by taking into account any one or more of a timing difference between the source cell and the target cell, a first timing advance (TA) of the source cell, or a second TA of the target cell in response to the source cell being asynchronous with the target cell.

[0108] 13. The method of Solution 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.

[0109] 14. The method of Solution 4, 6 or 8, wherein the time gap or minimum time gap value 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 a set of current 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; a radio resource control (RRC) signaling configuration; a medium access control - control element (MAC CE) signaling indication; a downlink control information (DCI) signaling indication; a predetermined value; the capabilities of the communication device; a value derived from X*N1; a value derived from X*N1 and an offset; the value of variable T1; or any one or more of P1 and P2.

[0110] 15. The method of any one of Solutions 4 to 14, wherein the granularity of the time gap or time gaps is symbol, slot, subframe, frame, nanosecond, microsecond, millisecond, or second.

[0111] 16. The method of any one of solutions 1 to 15, wherein the signaling includes downlink control information (DCI) or medium access control - control element (MAC CE).

[0112] 17. The method of solution 10, wherein the acknowledgement information is transmitted by the communication device to one or more of the source cell or the target cell.

[0113] 18. The method of solution 1, further comprising using information received from the serving cell for communication with the target or candidate cell.

[0114] 19. The method of solution 18, wherein the use depends on the association between the information received from the serving cell and the information from the target or candidate cell.

[0115] 20. The method of any one of solutions 1 to 19, wherein the information includes any one or more of a transmission configuration indication (TCI) state, a beam indication, a switching command, a cell identifier (ID), a bandwidth portion (BWP) ID, a cell radio network temporary identifier (C-RNTI), random access procedure related information, a cell switching indication, a timing advance (TA), a timing difference between the serving cell and the target cell, an association between a reference signal and a cell, a timer, an indication related to common information to be used for the target cell or the candidate cell, a channel / signal transmission or reception, and a reference signal.

[0116] 21. The method of solution 1 or 20, comprising enabling or activating a first parameter of the target cell or candidate cell after applying or completing switching, or using or activating a second parameter of the target cell or candidate cell after receiving a switch command or cell switch indication.

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

[0118] 23. The method of Solution 14, in which 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.

[0119] 24. Solution 14 method, where the offsets N1 or X or T1 or P1 or P2 are integers greater than or equal to a specific value.

[0120] 25. A wireless communication method (e.g., a flowchart depicted in FIG. 4 ) that includes transmitting (402), by a network device, signaling including information to be used for one or more of: handover of a 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.

[0121] 26. The method of solution 25, wherein the signaling causes the communication device to perform an action includes applying the information to start from a specific time or performing a communication using the information.

[0122] 27. The method of any of Solutions 25-26, wherein the signaling includes different information applied to start from different specific times, or the signaling includes different information applied to start from the same specific time.

[0123] 28. The information includes one or more of a cell switch indication and a transmission configuration indication (TCI) state, and depending on the information received in the signaling, the operation includes applying the cell switch indication and the TCI state indication to start from a specific time, interpreting the TCI state indication to be a cell switch indication and applying the TCI state indication to start from a specific time, continuing to apply the TCI state indication after applying the cell switch indication or after completing the cell switch, applying the TCI state indication simultaneously with applying the cell switch indication, using a rule for determining the time at which the TCI state indication is applied, after applying the cell switch indication or after completing the cell switch, The method of Solution 25 includes one or more of: setting a time gap for applying the TCI state after completing the cell switch to 0; applying the TCI state indication at a specific time after applying the cell switch indication or completing the cell switch; applying the TCI state indication after a time gap after applying the cell switch indication or completing the cell switch; using a rule for determining the time of use of the TCI state indication due to receiving the TCI state indication after applying the cell switch indication or completing the cell switch; and using the TCI state indication at another specific time due to receiving the TCI state indication after applying the cell switch indication or completing the cell switch.

[0124] 29. The method of any one of Solutions 25 to 27, wherein the specific time is when first information included in the signaling is applied and the second time is when second information included in the signaling is applied, and the communications device, in response to the specific time being later than the second time, performs one or more of: continuing to apply the second information; determining that the second information is invalid; determining that the second information cannot be applied; applying the second information after the specific time; applying the second information at the time that the first information is applied; or setting the time that the second information is applied as 0.

[0125] 30. The method of any one 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 the specific time at which the first information applies: determining a second time at which the second information applies based on an existing rule; determining a second time at which the second information applies based on a time gap relative to the specific time at which the first information applies as indicated or updated by the signaling; determining a second time at which the second information applies based on a time gap relative to a reference point; or determining that the second information should not be received within a time gap after the specific time at which the first information applies as indicated or updated by the signaling.

[0126] 31. The method of any one of solutions 25 to 28, wherein the signaling causes the communication device to: determine that the second information indicated or updated by the signaling should not be received before the specific time at which the first information indicated or updated by the signaling applies; or determine that the second information is invalid in response to the communication device receiving the second information indicated or updated by the signaling before the specific time at which the first information indicated or updated by the signaling applies; or discard the second information in response to the communication device receiving the second information indicated or updated by the signaling before the specific time at which the first information indicated or updated by the signaling applies.

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

[0128] 33. The method of any one of solutions 25, 30 or 32, wherein the signaling includes different information with different reference points, or the signaling includes different information with the same reference point.

[0129] 34. The method of Solution 32 or 33, wherein the reference point includes any one or more of: a start position or an end position when the communication device receives signaling indicating or updating information; a start position or an end position when the communication device receives information indicated or updated by signaling; a start position or an end position when the communication device transmits acknowledgement information in response to signaling indicating or updating information; or a start position or an end position when the communication device transmits acknowledgement information in response to information indicated or updated by signaling.

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

[0131] 36. The method of any one of Solutions 25 to 35, further comprising any one or more of: the reference point is determined based on a first subcarrier spacing (SCS) of the source cell or a second SCS of the target cell in response to the first SCS being different from the second SCS; or the reference point is determined by taking into account any one or more of a timing difference between the source cell and the target cell, a first timing advance (TA) of the source cell, or a second TA of the target cell in response to the source cell being asynchronous with the target cell.

[0132] 37. The method of solution 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.

[0133] 38. The method of Solution 28, 30, or 32, wherein the time gap or minimum time gap value 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 a set of current 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; a radio resource control (RRC) signaling configuration; a medium access control - control element (MAC CE) signaling indication; a downlink control information (DCI) signaling indication; a predetermined value; a capability of the communication device; a value derived from X*N1; a value derived from X*N1 and an offset; the value of variable T1; or any one or more of P1 and P2.

[0134] 39. The method of any one of Solutions 28 to 38, wherein the granularity of the time gap or time gaps is a symbol, slot, subframe, frame, nanosecond, microsecond, millisecond, or second.

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

[0136] 41. The method of solution 34, wherein the acknowledgement information is transmitted by the communication device to one or more of the source cell or the target cell.

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

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

[0139] 44. The method of any one of solutions 25 to 43, wherein the information includes any one or more of a transmission configuration indication (TCI) state, a beam indication, a switching command, a cell identifier (ID), a bandwidth portion (BWP) ID, a cell radio network temporary identifier (C-RNTI), random access procedure related information, a cell switching indication, a timing advance (TA), a timing difference between the serving cell and the target cell, an association between a reference signal and a cell, a timer, an indication related to common information to be used for the target cell or the candidate cell, a channel / signal transmission or reception, and a reference signal.

[0140] 45. The method of solution 25 or 44, comprising enabling or activating a first parameter of the target cell or candidate cell after applying or completing switching, or using or activating a second parameter of the target cell or candidate cell after receiving a switch command or cell switch indication.

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

[0142] 47. The method of Solution 38, wherein 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.

[0143] 48. Solution 38 method, where the offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a specific value.

[0144] 49. An apparatus for wireless communication comprising a processor configured to implement the method according to one or more of solutions 1 to 48.

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

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

[0147] Some of the embodiments described herein are described in the general context of a method or process that, in one embodiment, may be implemented by a computer program product embodied in a computer-readable medium containing computer-executable instructions, such as program code, executed by a computer in a networked environment. Computer-readable media may include removable and non-removable storage devices, including, but not limited to, read-only memory (ROM), random access memory (RAM), compact discs (CDs), digital versatile discs (DVDs), and the like. Thus, computer-readable media may include non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types. Computer-executable or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. A particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

[0148] Some of the disclosed embodiments may be implemented as devices or modules using hardware circuits, software, or a combination thereof. For example, a hardware circuit implementation may include discrete analog and / or digital components integrated, for example, as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may 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 needs of the digital signal processing associated with the disclosed functionality of the present application. Similarly, various components or subcomponents within each module may be implemented in software, hardware, or firmware. Connections between modules and / or between components within a module may be provided using any one of the connection methods and mediums known in the art, including, but not limited to, communication via the Internet, wired, or wireless networks using appropriate protocols.

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

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

Claims

1. 1. A wireless communication method, the method comprising: By communication devices, 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 cell or the candidate cell receiving signaling including information to be used for one or more of: performing, by said communications device, an action using said information; and A wireless communication method comprising:

2. Performing the operations includes: Applying said information starting from a specific time; or Using said information to carry out said communication. The method of claim 1 , comprising:

3. The signaling includes different information that applies starting from different specific times, or The signaling includes different information that is applied starting from the same specific time. The method according to any one of claims 1-2.

4. The information includes one or more of a cell switch indication and a transmission configuration indication (TCI) status, and in response to the information received in the signaling, the operation comprises: applying the cell switch indication and the TCI status indication to start from the specific time; interpreting the TCI status indication as the cell switch indication and applying the TCI status indication to start from the specific time; continuing to apply the TCI status indication after applying the cell switch indication or completing the cell switch; applying the TCI status indication simultaneously with applying the cell switching indication; using a rule for determining the time at which the TCI status indication applies after applying the cell switch indication or completing the cell switch; setting a time gap for applying the TCI state to 0 after applying the cell switch indication or completing the cell switch; applying the TCI status indication at a specific time after applying the cell switch indication or after completing the cell switch; applying the TCI status indication after a time gap after applying the cell switch indication or after completing the cell switch; using a rule for determining the time of use of the TCI status indication due to receiving the TCI status indication after applying the cell switch indication or after completing the cell switch; using the TCI status indication at another specific time due to receiving the TCI status indication after applying the cell switch indication or after completing the cell switch; The method of claim 1 , comprising one or more of:

5. the specific time is when first information included in the signaling is applied; the second time is when second information included in the signaling is applied; The communications device, in response to the particular time being later than the second time: continuing to apply said second information; determining that the second information is invalid; determining that the second information cannot be applied; applying the second information after the specified time; applying the second information at the time the first information is applied; or setting the time for which the second information is applicable as 0; The method of any one of claims 1 to 3, further comprising:

6. In response to the communication device receiving second information after a specified time period during which the first information is applied, determining a second time to which the second information applies based on existing rules; determining the second time at which the second information applies based on a time gap relative to the specific time at which the first information applies as indicated or updated by the signaling; determining the second time at which the second information applies based on a time gap relative to a reference point; or determining that the second information should not be received within a time gap after the specified time at which the first information indicated or updated by the signaling applies; The method of claim 1 , further comprising:

7. determining, by the communication device, that the second information indicated or updated by the signaling should not be received before the specified time at which the first information indicated or updated by the signaling applies; or determining, by the communications device, in response to the communications device receiving the second information indicated or updated by the signaling before the specified time at which the first information indicated or updated by the signaling applies, that the second information is invalid; or Discarding the second information in response to the communication device receiving the second information indicated or updated by the signaling before the specified time at which the first information indicated or updated by the signaling applies. The method of claim 1 , further comprising:

8. The method of claim 1 , wherein the specific time is determined by a time gap relative to a reference.

9. the signaling includes different information with different reference points, or the signaling includes different information having the same reference point; 9. The method of any one of claims 1, 6 or 8.

10. The reference point is the start or end position when the communication device receives the signaling indicating or updating the information; the start or end position at which the communications device receives the information indicated or updated by the signaling; the start or end position at which the communications device transmits acknowledgement information in response to the signaling indicating or updating the information; or The start or end position at which the communication device transmits the acknowledgement information in response to the information indicated or updated by the signaling.

10. The method of claim 8 or 9, comprising any one or more of:

11. The method of claim 10 , wherein the starting position or the ending position comprises the start or end of a time slot or the start or end of a symbol.

12. the reference point is determined based on a first subcarrier spacing (SCS) of a source cell or a second SCS of the target cell, responsive to a first SCS being different from a second SCS; or The reference point is determined in response to the source cell being asynchronous with the target cell by taking into account any one or more of a timing difference between the source cell and the target cell, a first timing advance (TA) of the source cell, or a second TA of the target cell.

12. The method of claim 1, further comprising any one or more of:

13. The method of claim 4, 6 or 8, wherein the time gap is a duration that includes a minimum value of the time gap; or the time gap is a duration in the time domain.

14. The time gap or the minimum value of the time gap is at least one current value; one or more additional values to be added to at least one value from a set of current 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; a radio resource control (RRC) signaling configuration; a medium access control - control element (MAC CE) signaling indication; a downlink control information (DCI) signaling indication; a predetermined value; a capability of the communication device; a value obtained from X*N1; a value obtained from X*N1 and an offset; a value of variable T1; or any one or more of P1 and P2. The method of claim 4, 6 or 8, wherein the determination is based on any one or more of:

15. The method according to any one of claims 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.

16. The method of any one of claims 1 to 15, wherein the signaling comprises Downlink Control Information (DCI) or Medium Access Control - Control Element (MAC CE).

17. The method of claim 10 , wherein the acknowledgement information is transmitted by the communication device to any one or more of the source cell or the target cell.

18. The method of claim 1 , further comprising using the information received from the serving cell for communication with the target cell or the candidate cell.

19. 20. The method of claim 18, wherein the using depends on a correlation between the information received from the serving cell and information from the target cell or the candidate cell.

20. The information is Transmission Configuration Indicator (TCI) state, beam indication, switch command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switch indication, timing advance (TA), timing difference between serving cell and target cell, association 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 20. The method of any one of claims 1 to 19, comprising any one or more of:

21. Enabling or activating a first parameter of the target cell or the candidate cell after applying or completing the switching; or Using or activating a second parameter of the target cell or the candidate cell after receiving the switching command or the cell switching indication.

21. The method of claim 1 or 20, comprising:

22. The timing advance (TA) or timing difference is Instructions from network devices; The timing difference is obtained based on subtracting a second TA value associated with the target cell from a first TA value associated with the source cell; Based on L1 measurements; Based on the Random Access Channel (RACH) procedure; or Based on a prescribed method 21. The method of claim 20, obtained by any one or more of:

23. 15. The method of claim 14, wherein 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.

24. The method of claim 14, wherein the offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a particular value.

25. 1. A wireless communication method, the method comprising: By network device, a handover of a communication device from a serving cell to a target or candidate cell; or communication between the communication device and the target cell or the candidate cell; transmitting signaling containing information to be used for one or more of the A wireless communication method comprising:

26. The signaling Applying said information starting from a specific time; or Using said information to carry out said communication.

26. The method of claim 25, causing the communications device to perform actions including:

27. the signaling includes different information that applies starting from different specific times, or The signaling includes different information that is applied starting from the same specific time.

27. The method according to any one of claims 25-26.

28. The information includes one or more of a cell switch indication and a transmission configuration indication (TCI) status, and in response to the information received in the signaling, the operation comprises: applying the cell switch indication and the TCI status indication to start from the specific time; interpreting the TCI status indication as the cell switch indication and applying the TCI status indication to start from the specific time; continuing to apply the TCI status indication after applying the cell switch indication or completing the cell switch; applying the TCI status indication simultaneously with applying the cell switching indication; using a rule for determining the time at which the TCI status indication applies after applying the cell switch indication or completing the cell switch; setting a time gap for applying the TCI state to 0 after applying the cell switch indication or completing the cell switch; applying the TCI status indication at a specific time after applying the cell switch indication or after completing the cell switch; applying the TCI status indication after a time gap after applying the cell switch indication or after completing the cell switch; using a rule for determining the time of use of the TCI status indication due to receiving the TCI status indication after applying the cell switch indication or after completing the cell switch; using the TCI status indication at another specific time due to receiving the TCI status indication after applying the cell switch indication or after completing the cell switch; 26. The method of claim 25, comprising one or more of:

29. the specific time is when first information included in the signaling is applied; the second time is when second information included in the signaling is applied; The communications device, in response to the particular time being later than the second time: continuing to apply said second information; determining that the second information is invalid; determining that the second information cannot be applied; applying the second information after the specified time; applying the second information at the time the first information is applied; or setting the time for which the second information is applicable as 0; 28. The method of any one of claims 25 to 27, further comprising:

30. The signaling is in response to the communication device receiving second information after a specified time period during which the first information is applied; determining a second time to which the second information applies based on existing rules; determining the second time at which the second information applies based on a time gap relative to the specific time at which the first information applies as indicated or updated by the signaling; determining the second time at which the second information applies based on a time gap relative to a reference point; or determining that the second information should not be received within a time gap after the specified time at which the first information indicated or updated by the signaling applies; 29. The method of any one of claims 25 to 28, wherein the communication device performs any one or more of the following:

31. The signaling determining, by the communication device, that the second information indicated or updated by the signaling should not be received before the specified time at which the first information indicated or updated by the signaling applies; or determining, by the communications device, in response to the communications device receiving the second information indicated or updated by the signaling before the specified time at which the first information indicated or updated by the signaling applies, that the second information is invalid; or Discarding the second information in response to the communication device receiving the second information indicated or updated by the signaling before the specified time at which the first information indicated or updated by the signaling applies.

29. The method of any one of claims 25 to 28, wherein the method causes the communication device to:

32. 32. The method of any one of claims 25 to 31, wherein the particular time is determined by a time gap relative to a reference.

33. the signaling includes different information with different reference points; or the signaling includes different information having the same reference point; 33. The method of any one of claims 25, 30 or 32.

34. The reference point is the start or end position when the communication device receives the signaling indicating or updating the information; the start or end position at which the communications device receives the information indicated or updated by the signaling; the start or end position at which the communications device transmits acknowledgement information in response to the signaling indicating or updating the information; or The start or end position at which the communication device transmits the acknowledgement information in response to the information indicated or updated by the signaling.

34. The method of claim 32 or 33, comprising any one or more of:

35. 35. The method of claim 34, wherein the starting position or the ending position comprises the start or end of a time slot, or the start or end of a symbol.

36. the reference point is determined based on a first subcarrier spacing (SCS) of a source cell or a second SCS of a target cell, responsive to a first SCS being different from a second SCS; or The reference point is determined in response to the source cell being asynchronous with the target cell by taking into account any one or more of a timing difference between the source cell and the target cell, a first timing advance (TA) of the source cell, or a second TA of the target cell.

36. The method of any one of claims 25 to 35, further comprising any one or more of:

37. 33. The method of claim 28, 30 or 32, wherein the time gap is a duration that includes a minimum value of the time gap; or the time gap is a duration in the time domain.

38. The time gap or the minimum value of the time gap is at least one current value; one or more additional values to be added to at least one value from a set of current 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; a radio resource control (RRC) signaling configuration; a medium access control - control element (MAC CE) signaling indication; a downlink control information (DCI) signaling indication; a predetermined value; a capability of the communication device; a value derived from X*N1; a value derived from X*N1 and an offset; a value of variable T1; or any one or more of P1 and P2.

33. The method of claim 28, 30 or 32, wherein the determination is based on any one or more of:

39. 39. The method of any one of claims 28 to 38, wherein the time gap or the granularity of the time gap is a symbol, a slot, a subframe, a frame, or a nanosecond, a microsecond, a millisecond, or a second.

40. 40. The method of any one of claims 25 to 39, wherein the signaling comprises Downlink Control Information (DCI) or Medium Access Control - Control Element (MAC CE).

41. 35. The method of claim 34, wherein the acknowledgement information is transmitted by the communication device to any one or more of the source cell or the target cell.

42. 26. The method of claim 25, further comprising using the information received from the serving cell for communication with the target cell or the candidate cell.

43. 43. The method of claim 42, wherein the using depends on an association between the information received from the serving cell and information from the target cell or the candidate cell.

44. The information is Transmission Configuration Indicator (TCI) state, beam indication, switch command, cell identifier (ID), bandwidth portion (BWP) ID, cell radio network temporary identifier (C-RNTI), random access procedure related information, cell switch indication, timing advance (TA), timing difference between serving cell and target cell, association 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 44. The method of any one of claims 25 to 43, comprising any one or more of:

45. Enabling or activating a first parameter of the target cell or the candidate cell after applying or completing the switching; or Using or activating a second parameter of the target cell or the candidate cell after receiving the switching command or the cell switching indication.

45. The method of claim 25 or 44, comprising:

46. The timing advance (TA) or timing difference is Instructions from network devices; The timing difference is obtained based on subtracting a second TA value associated with the target cell from a first TA value associated with the source cell; Based on L1 measurements; Based on the Random Access Channel (RACH) procedure; or Based on a prescribed method 45. The method of claim 44, wherein the method is provided by any one or more of:

47. 39. The method of claim 38, wherein 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.

48. 39. The method of claim 38, wherein the offset N1 or X or T1 or P1 or P2 is an integer greater than or equal to a particular value.

49. 49. An apparatus for wireless communication comprising a processor configured to perform a method according to one or more of claims 1 to 48.

50. 50. A non-transitory computer readable program storage medium storing code that, when executed by a processor, causes the processor to perform a method according to one or more of claims 1 to 48.

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