Measurement and reporting of timing advance related information

Abstract

Wireless communication systems, methods, and apparatuses are described. A method of wireless communication includes receiving, by a wireless node, a first set of downlink reference signals associated with a first transmission parameter and a second set of downlink reference signals associated with a second transmission parameter. The method further includes determining, by the wireless node, a first timing of a first downlink frame associated with the first transmission parameter and a second timing of a second downlink frame associated with the second transmission parameter based on the first set of downlink reference signals and the second set of downlink reference signals. The method further includes determining, by the wireless node, a timing offset value between a first downlink frame associated with the first transmission parameter and a second downlink frame associated with the second transmission parameter based on the first timing and the second timing.

Description

TECHNICAL FIELD

[0001] This patent document generally relates to wireless communication. BACKGROUND

[0002] Mobile communication technology is driving the world towards an increasingly interconnected and networked society. Compared with existing wireless networks, the next generation system and wireless communication technology will need to support a wider range of use case characteristics and provide more complex and range-fine access requirements and flexibility.

[0003] Long-Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP). LTE-Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The 5th generation wireless system (referred to as 5th generation, 5G) is further developed on the basis of the LTE and LTE-A wireless standards and is committed to supporting higher data rates, massive connectivity, ultra-low latency, high reliability, and other emerging business needs. SUMMARY

[0004] Techniques for measuring timing advance related information (e.g., a timing offset value between different transmission parameters) are disclosed. Techniques for reporting timing advance related information (e.g., based on a timing advance related information reporting configuration and / or a network message) are also disclosed.

[0005] A first example wireless communication method includes receiving, by a wireless node, a first set of downlink reference signals associated with a first transmission parameter and a second set of downlink reference signals associated with a second transmission parameter. The method also includes determining, by the wireless node, a first timing of a first downlink frame associated with the first transmission parameter and a second timing of a second downlink frame associated with the second transmission parameter based on the first set of downlink reference signals and the second set of downlink reference signals. The method further includes determining, by the wireless node, a timing offset value between the first downlink frame associated with the first transmission parameter and the second downlink frame associated with the second transmission parameter based on the first timing and the second timing.

[0006] A second example wireless communication method includes receiving, by a wireless node, a timing advance related information reporting configuration and / or a network message. The method also includes transmitting, by the wireless node, timing advance related information corresponding to a transmission parameter based on the timing advance related information reporting configuration and / or the network message.

[0007] A third example wireless communication method includes receiving, by a wireless node, a timing advance related message associated with a transmission parameter. The method further includes terminating, by the wireless node, a timing advance measurement procedure and / or a timing advance reporting procedure associated with the transmission parameter based on the timing advance related message.

[0008] A fourth example wireless communication method includes performing, by a wireless node, a physical random access channel (PRACH) transmission in response to initiation of a random access procedure associated with a transmission parameter. The method further includes determining, by the wireless node, a transmission power for the PRACH transmission based on a priority rule, wherein a total transmission power for the PRACH transmission and other uplink transmissions is not greater than a power limit value.

[0009] A fifth example wireless communication method includes transmitting, by a network node, a first set of downlink reference signals associated with a first transmission parameter and a second set of downlink reference signals associated with a second transmission parameter. The method further includes receiving, by the network node, a first timing of a first downlink frame associated with the first transmission parameter and a second timing of a second downlink frame associated with the second transmission parameter based on the first set of downlink reference signals and the second set of downlink reference signals. The method further includes receiving, by the network node, a timing offset value between the first downlink frame associated with the first transmission parameter and the second downlink frame associated with the second transmission parameter based on the first timing and the second timing.

[0010] A sixth example wireless communication method includes transmitting, by a network node, a timing advance related information reporting configuration and / or a network message. The method further includes receiving, by the network node, timing advance related information corresponding to a transmission parameter based on the timing advance related information reporting configuration and / or the network message.

[0011] A seventh example wireless communication method includes transmitting, by a network node, a timing advance related message associated with a transmission parameter. The method further includes terminating, by the network node, a timing advance measurement procedure and / or a timing advance reporting procedure associated with the transmission parameter based on the timing advance related message.

[0012] An eighth example wireless communication method includes receiving, by a network node, a physical random access channel (PRACH) transmission in response to initiation of a random access procedure associated with a transmission parameter. The method further includes determining, by the network node, a transmission power for the PRACH transmission based on a priority rule, wherein a total transmission power for the PRACH transmission and other uplink transmissions is not greater than a power limit value.

[0013] In another example embodiment, an apparatus configured or operable to perform the methods described above is disclosed. The apparatus can include a processor configured to implement the methods described above.

[0014] In another exemplary embodiment, the above-described method is implemented in the form of processor-executable code, and is stored in a non-transitory computer-readable storage medium. The code is included in the computer-readable storage medium, which, when executed by a processor, causes the processor to implement the method described in this patent document.

[0015] The above-described and other aspects are more fully described in the accompanying drawings, specification, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Exemplary measurement and reporting of timing advance related information is shown.

[0017] Figure 2 is an exemplary flow diagram for determining a timing offset value.

[0018] Figure 3 is an exemplary flow diagram for transmitting timing advance related information.

[0019] Figure 4 is an exemplary flow diagram for terminating a measurement or reporting procedure of timing advance.

[0020] Figure 5 is an exemplary flow diagram for performing a physical random access channel (PRACH) transmission.

[0021] Figure 6 is an exemplary flow diagram for receiving a timing offset value.

[0022] Figure 7 is an exemplary flow diagram for receiving timing advance related information.

[0023] Figure 8 is another exemplary flow diagram for terminating a measurement or reporting procedure of timing advance.

[0024] Figure 9 is an exemplary flow diagram for receiving a physical random access channel (PRACH) transmission.

[0025] Figure 10 An exemplary block diagram of a hardware platform that can be part of a network node or wireless node is shown.

[0026] Figure 11 Exemplary wireless communications including a Base Station (BS) and a User Equipment (UE) based on some implementations of the disclosed techniques are shown. DETAILED DESCRIPTION

[0027] Example section titles are used below to facilitate understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Thus, one or more features of one example section can be combined with one or more features of another example section. Also, 5G terminology is used for clarity of illustration, but the technology disclosed in this document is not limited to 5G technology and can be used to implement wireless systems of other protocols.

[0028] I. Introduction In Long Term Evolution (LTE) and New Radio (NR) systems, uplink synchronization is to ensure that the arrival time of transmissions from multiple user equipments (UEs) is within an acceptable range and the demodulation at the network side is reliable. Uplink synchronization can be based on an indication message from the network or a measurement at the UE side. The indication message is determined at the base station side based on uplink channels / signals (e.g., Physical Random Access Channel (PRACH) or Sounding Reference Signal (SRS)) from the UE. The measurement at the UE side is based on the reception time of downlink signals / channels. When uplink synchronization for multiple candidate cells or multiple transmit-receive points (TRPs) needs to be performed, a timing advance value associated with each of these cells / TRPs needs to be determined.

[0029] Generally, a UE obtains a timing advance value based on a random access procedure and a timing advance command message from the network. In this case, both the UE and the network side can identify the timing advance value used by the UE.

[0030] A UE can determine a timing advance value of a cell based on a measurement of a downlink reference signal or a downlink frame by assuming that the difference between the downlink timings of two cells can be used to determine the difference between the uplink timings of the two cells. With this approach, if a timing advance value of one cell has been determined by a UE, the UE can determine a timing advance value of another cell based on the measurement and the timing advance value of the first cell. This patent document discloses detailed methods for the measurement, including the period of the measurement, configuration, etc.

[0031] When a UE determines a timing advance value by itself (e.g., based on a measurement at the UE side), the network cannot identify the timing advance value used by the UE if the UE does not report the corresponding value to the network. If the timing advance value determined by the UE is not accurate enough, the network cannot indicate an adjustment value for modifying the timing advance value without knowing the timing advance value determined by the UE. This patent document also discloses methods for the UE to report timing advance related information.

[0032] Downlink and uplink synchronization are required steps to ensure reliable wireless communication in LTE and NR wireless systems. Downlink synchronization is achieved by receiving a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), while uplink synchronization is achieved by a random access procedure and uplink timing alignment maintenance.

[0033] The value of uplink transmission timing advance is related to NTA,offset determined by Radio Resource Control (RRC) signaling and Timing Advance Command (TAC) included in a Media Access Control (MAC) control element (CE). Typically, the network configures multiple Time Alignment Groups (TAGs) to indicate timing advance for multiple serving cells, and each TAG includes one or more serving cells. The base station transmits a TAC associated with a TAG, and the UE applies the TAC to determine the timing advance for all serving cells in the TAG. For NTA,offset, the UE expects the same value to be configured for all serving cells in the same TAG.

[0034] The UE receives a TAC in a random access response to determine an initial timing advance value, and then the UE receives a TAC in a TAC MAC CE to update the timing advance value.

[0035] Uplink frame transmission is advanced (in time) over the first detection path of the corresponding downlink frame from a reference cell, where the amount of the advance value is based on the timing advance value. For serving cell(s) in a primary Time Alignment Group (pTAG), the UE shall use a special Cell (SpCell) as the reference cell to derive the UE transmission timing for the cells in the pTAG. For serving cell(s) in a secondary Time Alignment Group (sTAG), the UE shall use any of the activated secondary Cells (SCells) as the reference cell to derive the UE transmission timing for the cells in the sTAG.

[0036] In this patent document, a transmission parameter can include at least one of a transmission reception point (TRP), a base station, a set of panels of a base station, a cell, or a physical cell. Further, a transmission parameter includes at least one of a set of information of one or more reference signals, a set of reference signal resources, a set of physical uplink control channel (PUCCH) resources, a search space, panel related information, a subarray, a set of antennas, a set of antenna ports, a set of antenna ports, a set of beams, a physical cell index (PCI), TRP related information, a CORESET, a CORESET pool, a transmission configuration indicator (TCI) state, a serving cell, an additional PCI, a candidate cell, a set of candidate cells, a TAG, a UE capability value, or a set of UE capabilities.

[0037] In this patent document, information / identification of a transmission parameter can include at least one of a control resource set (CORESET) index, a CORESET pool index, a Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) index, a transmission configuration indicator (TCI) state index, a PCI, a set of reference signal (RS) indices, a search space identification, a SRS resource set index, a spatial relation index, a set of power control parameters index, a panel index, a beam group index, a subarray index, an index of a code division multiplexing (CDM) group of Demodulation Reference Signal (DMRS) ports, a group index of Channel Status Information Reference Signal (CSI-RS) resources, a set of channel measurement resource (CMR) indices, a TAG index, a candidate cell index, or a list of candidate cells.

[0038] Note that, in this patent document, an uplink resource can be a PUCCH or a physical uplink shared channel (PUSCH).

[0039] Note that in this patent document, uplink transmission includes at least one of the following: PUSCH transmission, PUCCH transmission, PRACH transmission, or SRS transmission.

[0040] Note that in this patent document, a time slot is equivalent to a sub-time slot, frame, or subframe.

[0041] In this patent document, the cell handover command indicates the UE information / identifier of the target cell during the cell handover process, the handover process, or the inter-cell movement process.

[0042] In this patent document, timing advance measurement is equivalent to measurement used to determine timing advance value, or equivalent to determining timing advance value based on measurement.

[0043] In this patent document, the timing advance related message may include at least one of the following: cell index, time alignment group (TAG) index, timing advance command, or timing advance offset.

[0044] In this patent document, the UE can report to the network the maximum number of timing advance values ​​stored / maintained / memorized by the UE. The number of transmission parameters configured / indicated / enabled / notified for performing timing advance measurements does not exceed this capability.

[0045] like Figure 1 As shown, the UE receives downlink reference signals from two cells / TRPs respectively, and determines the downlink timing of the two cells / TRPs based on measurements of the downlink reference signals. The UE determines the difference / offset value between the measured downlink timings of the two cells / TRPs. The UE can maintain a timing advance value associated with cell / TRP 1, and the UE can determine a timing advance value associated with cell / TRP 2 based on the timing advance value associated with cell / TRP 1 and the difference / offset value. After determining the timing advance value, the UE generates a timing advance-related information report and transmits the timing advance-related information report to either cell / TRP 1 or cell / TRP 2.

[0046] The transmission parameters in Examples 1 to 3 can be considered as, but are not limited to: cell, TRP, panel, or beam group.

[0047] II. Example 1 Example 1 specifies that the UE determines the timing advance value based on the measurement of the downlink reference signal.

[0048] In some embodiments, the UE receives a first set of downlink reference signals associated with the first transmission parameter and receives a second set of downlink reference signals associated with the second transmission parameter. The UE determines a first timing of a downlink frame associated with the first transmission parameter and determines a second timing of a downlink frame associated with the second transmission parameter. The UE determines a timing difference / offset value between the frame associated with the first transmission parameter and the frame associated with the second transmission parameter.

[0049] The UE can also receive a timing advance related message associated with the first transmission parameter and determine a timing advance value associated with the first transmission parameter based on the timing advance related message.

[0050] The UE determines a timing advance value associated with the second transmission parameter based on the timing advance value associated with the first transmission parameter and the difference / offset value.

[0051] In some embodiments, determining the timing advance value associated with the first transmission parameter or the second transmission parameter is further based on one or more timing advance related values configured by the network.

[0052] In some embodiments, the UE receives a configuration of the timing advance measurement before the UE determines the timing difference / offset value between the frame associated with the first transmission parameter and the frame associated with the second transmission parameter.

[0053] The configuration of the timing advance measurement can include at least one of a time period of the timing advance measurement, a duration of the timing advance measurement, or information / index / identification of a downlink reference signal used for the timing advance measurement. The downlink reference signal can be a Synchronization Signal Block (SSB) or a CSI-RS.

[0054] The downlink reference signal associated with the first transmission parameter or the second transmission parameter can be associated with the downlink reference signal used for the timing advance measurement.

[0055] The configuration of the timing advance measurement can be specific to one transmission parameter or common to multiple transmission parameters.

[0056] In some embodiments, a timeline of the timing advance measurement corresponding to the transmission parameter is determined based on at least one of a reception time of a downlink reference signal (DL-RS) associated with the measurement, a pre-defined value, or a configured value, wherein the pre-defined value or the configured value is in units of millisecond or slot.

[0057] In some embodiments, the UE performs the timing advance measurement or the determination of the timing difference / offset value in a time period (in units of slot, frame, millisecond) configured in the configuration of the timing advance measurement.

[0058] In some embodiments, the UE performs the timing advance measurement or performs the determination of the timing difference / offset value based on reception of a downlink reference signal for the timing advance measurement.

[0059] In an example, the UE is configured with a time period for the timing advance measurement, and the UE performs the timing advance measurement based on a DL reference signal that is most recently received at a time point within the time period.

[0060] In an example, the UE is configured with one or more DL reference signals for the timing advance measurement, and the UE performs the timing advance measurement when any of the DL reference signals is received.

[0061] In some embodiments, the UE performs the timing advance measurement for one or more transmission parameters, wherein the one or more transmission parameters include transmission parameters configured / enabled / indicated by the timing advance measurement configuration, or transmission parameters indicated by a message from the network. The message can be a cell switch command, a MAC CE for timing advance related information reporting, or a Downlink Control Information (DCI) format. The message indicates information / identity of the one or more transmission parameters.

[0062] III. Embodiment 2 Embodiment 2 is to specify that the UE reports timing advance related information corresponding to transmission parameters.

[0063] In some embodiments, the UE is instructed / informed / configured / activated to report timing advance related information related to transmission parameters.

[0064] In some embodiments, before the timing advance related information reporting, the UE receives a configuration of the timing advance related information reporting, wherein the configuration includes at least one of the following: information of uplink resources for the timing advance related information reporting, a time period for the reporting, information of slots / frames for the timing advance related information reporting.

[0065] In some embodiments, the timing advance related information reporting is transmitted in a MAC CE or a PUCCH.

[0066] In some embodiments, the timing advance related information to be reported includes at least one of the following: information / identification of the transmission parameter, the timing advance value, the timing difference value / offset value, or the timing advance offset value. The timing advance offset value of the transmission parameter is the difference / offset of the timing advance value between the transmission parameter and the reference transmission parameter, where the reference transmission parameter can be the SpCell, the PTAG, the serving cell, the CORESET with CORESET pool index = 0, or the TAG with the lowest TAG ID, or the transmission parameter associated with Type 1 common search space (CSS).

[0067] In some embodiments, the UE performs the timing advance related information reporting based on the configuration of the timing advance related information reporting. The UE performs the timing advance related information reporting for one or more transmission parameters configured with the configuration of the timing advance related information reporting. The UE generates the timing advance related information report associated with the transmission parameter and transmits the timing advance related information report in the uplink resource.

[0068] In some embodiments, the UE performs the timing advance related information reporting after receiving a message from the network, where the message can be a cell change order, a MAC CE for the timing advance related information reporting, or a DCI format. The message indicates the information / identification of one or more transmission parameters.

[0069] In response to receiving the message from the network, the UE generates the timing advance related information report associated with at least one of the one or more transmission parameters indicated by the message and transmits the timing advance related information report in the uplink resource.

[0070] In some embodiments, before generating and transmitting the timing advance related information report, the UE transmits a scheduling request (SR) to the network.

[0071] In some embodiments, the information of the uplink resource can be indicated by the cell change order and / or determined by a predefined rule or RRC signaling. The information of the uplink resource can include at least one of the following: subcarrier spacing (SCS), frequency hopping, bandwidth part indication, time domain resource assignment (TDRA), frequency domain resource assignment (FDRA), number of slots for PUSCH transmission repetition, or Modulation and Coding Scheme (MCS) value.

[0072] In some embodiments, the UE transmits the uplink resource for the timing advance related information in the following: (1) the uplink carrier or the supplementary uplink carrier of the SpCell associated with the transmission parameter indicated by the message; (2) the uplink carrier or the supplementary uplink carrier of any of the multiple SCells associated with the transmission parameter indicated by the message; (3) the uplink carrier or the supplementary uplink carrier of the SpCell associated with one of the multiple transmission parameters indicated by the message; or (4) the uplink carrier or the supplementary uplink carrier of any of the multiple SCells associated with one of the multiple transmission parameters indicated by the message.

[0073] In some embodiments, the uplink resource for the timing advance related information that the UE transmits based on one of the above options is indicated / configured by the network.

[0074] IV. Embodiment 3 Embodiment 3 is to specify that the UE stops / cancels / completes the timing advance measurement and / or the timing advance related information reporting.

[0075] In some embodiments, the UE initiates a random access procedure triggered by a physical downlink control channel (PDCCH) order from the network, or the UE initiates a random access procedure triggered by a higher layer at the UE side, or the UE receives a timing advance related message, wherein the random access procedure or the timing advance related message is associated with a transmission parameter.

[0076] In some embodiments, the UE receives the timing advance related message during the random access procedure.

[0077] In some embodiments, in response to initiating the random access procedure or receiving the timing advance related message, the UE stops / cancels / completes the triggered / running / valid / pending timing advance measurement procedure and / or the timing advance reporting procedure associated with the corresponding transmission parameter.

[0078] In some embodiments, in response to initiating the random access procedure or receiving the timing advance related message, the UE determines the timing advance value associated with the corresponding transmission parameter based on the timing advance related message, and the timing advance value determined based on the timing advance measurement is invalidated / discarded / cleared.

[0079] In some embodiments, after transmitting the timing advance related information reporting associated with the transmission parameter, the UE clears / discards / deletes / removes the corresponding timing advance related information memorized / stored / maintained by the UE.

[0080] In some embodiments, a UE transmits a PRACH in response to initiating a random access procedure associated with a transmission parameter, and determines a transmission power for the PRACH transmission. The UE allocates the transmission power for the PRACH transmission to satisfy a condition according to a priority rule, where the condition comprises: a total transmission power of one or more uplink transmissions on one or more transmission parameters (e.g., serving cell, carrier, cell group) is not greater than a power limit value, where the priority comprises at least one of: (1) the PRACH transmission associated with the transmission parameter has the highest priority.

[0081] (2) the PRACH transmission associated with the transmission parameter has a priority only lower than a priority of a PRACH transmission on a PCell.

[0082] (3) the PRACH transmission associated with the transmission parameter has a same priority order as a PUCCH / PUSCH transmission with a higher priority index.

[0083] (4) the PRACH transmission associated with the transmission parameter has a same priority order as a PUCCH / PUSCH transmission with specific uplink control information, where the specific uplink control information comprises at least one of: hybrid automatic repeat request acknowledgement (HARQ-ACK) information, SR, or link recovery request (LRR).

[0084] (5) the PRACH transmission associated with the transmission parameter has a priority not lower than a lowest priority.

[0085] Figure 2 is an example flowchart for determining a timing offset value. Operation 202 includes receiving, by a wireless node, a first set of downlink reference signals associated with a first transmission parameter and a second set of downlink reference signals associated with a second transmission parameter. Operation 204 includes determining, by the wireless node, a first timing of a first downlink frame associated with the first transmission parameter and a second timing of a second downlink frame associated with the second transmission parameter based on the first set of downlink reference signals and the second set of downlink reference signals. Operation 206 includes determining, by the wireless node, a timing offset value between the first downlink frame associated with the first transmission parameter and the second downlink frame associated with the second transmission parameter based on the first timing and the second timing. In some embodiments, the method can be implemented according to embodiment 1. In some embodiments, further steps of performing the method can be based on system performance that is superior to conventional protocols.

[0086] In some embodiments, the method further includes determining, by the wireless node, a second timing advance value associated with the second transmission parameter based on the timing offset value and a first timing advance value associated with the first transmission parameter.

[0087] In some embodiments, the method further includes receiving, by the wireless node, a timing advance measurement configuration. In some embodiments, the timing advance measurement configuration comprises at least one of: a time period of the timing advance measurement, a duration of the timing advance measurement, and a downlink reference signal for the timing advance measurement.

[0088] In some embodiments, determining the timing offset value comprises determining the timing offset value in a time period configured by the timing advance measurement configuration, wherein the time period is in units of slots, frames, or milliseconds. In some embodiments, determining the timing offset value comprises determining the timing offset value based on a reception of the downlink reference signal for the timing advance measurement.

[0089] In some embodiments, the first set of downlink reference signals and the second set of downlink reference signals are associated with the downlink reference signal for the timing advance measurement. In some embodiments, the timing advance measurement configuration is specifically associated with the first transmission parameter or the second transmission parameter. In some embodiments, the timing advance measurement configuration is commonly associated with the first transmission parameter and the second transmission parameter.

[0090] In some embodiments, at least one of the first transmission parameter and the second transmission parameter is configured by the timing advance measurement configuration or indicated by a network message. In some embodiments, the network message comprises at least one of: a cell handover command, a medium access control control element for a timing advance related information report, and a downlink control information format, wherein the network message indicates an identity of the first transmission parameter and the second transmission parameter.

[0091] In some embodiments, a timeline of the timing advance measurement corresponding to the first transmission parameter and the second transmission parameter is determined based on at least one of: a reception time of the downlink reference signal associated with the timing advance measurement, a pre-defined value, or a configured value.

[0092] Figure 3 is an example flowchart for transmitting timing advance related information. Operation 302 includes receiving, by a wireless node, a timing advance related information report configuration and / or a network message. Operation 304 includes transmitting, by the wireless node, timing advance related information corresponding to a transmission parameter based on the timing advance related information report configuration and / or the network message. In some embodiments, the method can be implemented according to embodiment 2. In some embodiments, performing further steps of the method can be based on system performance that is superior to conventional protocols.

[0093] In some embodiments, the timing advance related information reporting configuration comprises at least one of: uplink resource information for the timing advance related information reporting, a time period for the timing advance related information reporting, slot information for the timing advance related information reporting, and frame information for the timing advance related information reporting.

[0094] In some embodiments, the transmission parameter is configured according to the timing advance related information reporting configuration. In some embodiments, the timing advance related information comprises at least one of: an identification of the transmission parameter, a timing advance value, a timing offset value, and a timing advance offset value. In some embodiments, the timing advance offset value is a difference between the timing advance value of the transmission parameter and a timing advance value of a reference transmission parameter, wherein the reference transmission parameter comprises at least one of: a special cell (SpCell), a primary time alignment group (PTAG), a serving cell, a control resource set with a pool index of zero, a TAG with a lowest TAG identification number, and a transmission parameter associated with a Type 1 CSS.

[0095] In some embodiments, the network message comprises at least one of: a cell handover command, a medium access control control element for the timing advance related information reporting, and a downlink control information format.

[0096] In some embodiments, the method further comprises: generating, by the wireless node, the timing advance related information reporting associated with the transmission parameter, the transmission parameter being configured according to the timing advance related information reporting configuration and / or being indicated by the network message. In some embodiments, the method further comprises: transmitting, by the wireless node, a scheduling report prior to the transmission of the timing advance related information.

[0097] In some embodiments, the transmission of the timing advance related information comprises: transmitting the timing advance related information in an uplink resource, wherein information of the uplink resource is indicated by at least one of: a cell handover command, a predefined rule, or the timing advance related information reporting configuration. In some embodiments, the information of the uplink resource comprises at least one of: a subcarrier spacing, a frequency hopping, a bandwidth part indication, a time domain resource allocation, a frequency domain resource allocation, a number of slots for physical uplink shared channel transmission repetition, and a modulation coding scheme value. In some embodiments, the uplink resource is transmitted on an uplink carrier or a supplementary uplink carrier of a special cell (SpCell) or a secondary cell associated with the transmission parameter indicated by the network message.

[0098] Figure 4is an example flow diagram for terminating a timing advance related measurement or reporting procedure. Operation 402 includes receiving, by a wireless node, a timing advance related message associated with a transmission parameter. Operation 404 includes terminating, by the wireless node, a timing advance measurement procedure and / or a timing advance reporting procedure associated with the transmission parameter based on the timing advance related message. In some embodiments, the method can be implemented in accordance with embodiment 3. In some embodiments, further steps of performing the method can be based on system performance that is superior to legacy protocols.

[0099] In some embodiments, the method further includes determining, by the wireless node, a timing advance value associated with the transmission parameter based on the timing advance related message. In some embodiments, the method further includes overwriting, by the wireless node, a previous timing advance value associated with the transmission parameter and determined through the timing advance measurement procedure.

[0100] In some embodiments, terminating the timing advance measurement procedure and / or the timing advance reporting procedure is further in response to initiation of a random access procedure associated with the transmission parameter.

[0101] In some embodiments, the method further includes removing, by the wireless node, timing advance related information associated with the transmission parameter that is stored on the wireless node.

[0102] Figure 5 is an example flow diagram for performing a physical random access channel (PRACH) transmission. Operation 502 includes performing, by a wireless node, a physical random access channel (PRACH) transmission in response to initiation of a random access procedure associated with a transmission parameter. Operation 504 includes determining, by the wireless node, a transmission power for the PRACH transmission based on a priority rule, wherein a total transmission power of the PRACH transmission and other uplink transmissions is not greater than a power limit value. In some embodiments, the PRACH transmission and the other uplink transmissions can be on one or more serving cells. In some embodiments, the method can be implemented in accordance with embodiment 3. In some embodiments, further steps of performing the method can be based on system performance that is superior to legacy protocols.

[0103] In some embodiments, the priority rule comprises at least one of: the PRACH transmission associated with the transmission parameter has the highest priority, the priority of the PRACH transmission associated with the transmission parameter is only lower than the priority of a PRACH transmission on a primary cell (PCell), the priority of the PRACH transmission associated with the transmission parameter is not lower than a lowest priority, the PRACH transmission associated with the transmission parameter has the same priority order as a physical uplink control channel (PUCCH) / physical uplink shared channel (PUSCH) transmission with a larger priority index, and the PRACH transmission associated with the transmission parameter has the same priority order as a PUCCH / PUSCH transmission with specific uplink control information, wherein the specific uplink control information comprises at least one of: hybrid automatic repeat request acknowledgement (HARQ-ACK) information, a scheduling request (SR), or a link recovery request (LRR).

[0104] Figure 6 is an example flow diagram for receiving a timing offset value. Operation 602 includes transmitting, by a network node, a first set of downlink reference signals associated with a first transmission parameter and a second set of downlink reference signals associated with a second transmission parameter. Operation 604 includes receiving, by the network node, a first timing of a first downlink frame associated with the first transmission parameter and a second timing of a second downlink frame associated with the second transmission parameter based on the first set of downlink reference signals and the second set of downlink reference signals. Operation 606 includes receiving, by the network node, a timing offset value between the first downlink frame associated with the first transmission parameter and the second downlink frame associated with the second transmission parameter based on the first timing and the second timing. In some embodiments, the method can be implemented according to embodiment 1. In some embodiments, further steps of the method can be performed based on system performance that is superior to legacy protocols.

[0105] Embodiments performed by a wireless node in method 200 can also be performed by a network node in method 600.

[0106] Figure 7 is an example flow diagram for receiving timing advance related information. Operation 702 includes transmitting, by a network node, a timing advance related information reporting configuration and / or a network message. Operation 704 includes receiving, by the network node, timing advance related information corresponding to a transmission parameter based on the timing advance related information reporting configuration and / or the network message. In some embodiments, the method can be implemented according to embodiment 2. In some embodiments, further steps of the method can be performed based on system performance that is superior to legacy protocols.

[0107] Embodiments performed by a wireless node in method 300 can also be performed by a network node in method 700.

[0108] Figure 8 is another example flow diagram for terminating a timing advance related measurement or reporting procedure. Operation 802 includes transmitting, by a network node, a timing advance related message associated with a transmission parameter. Operation 804 includes terminating, by the network node, a timing advance measurement procedure and / or a timing advance reporting procedure associated with the transmission parameter based on the timing advance related message. In some embodiments, the method can be implemented in accordance with embodiment 3. In some embodiments, further steps of performing the method can be based on system performance that is superior to legacy protocols.

[0109] Embodiments performed by a wireless node in method 400 can also be performed by a network node in method 800.

[0110] Figure 9 is an example flow diagram for receiving a physical random access channel (PRACH) transmission. Operation 902 includes receiving, by a network node, a physical random access channel (PRACH) transmission in response to initiation of a random access procedure associated with a transmission parameter. Operation 904 includes determining, by the network node, a transmission power for the PRACH transmission based on a priority rule, wherein a total transmission power for the PRACH transmission and other uplink transmissions is not greater than a power limit value. In some embodiments, the PRACH transmission and other uplink transmissions can be on one or more serving cells. In some embodiments, the method can be implemented in accordance with embodiment 3. In some embodiments, further steps of performing the method can be based on system performance that is superior to legacy protocols.

[0111] Embodiments performed by a wireless node in method 500 can also be performed by a network node in method 900.

[0112] Figure 10 An example block diagram of a hardware platform 1000, which can be part of a network node (e.g., a base station or a transmission parameter) or a wireless node (e.g., a user equipment (UE)), is shown. The hardware platform 1000 includes at least one processor 1010 and a memory 1005 having instructions stored thereon. The instructions, when executed by the processor 1010, configure the hardware platform 1000 to perform the operations described in this patent document, in various embodiments, and various embodiments. A transmitter 1015 transmits or sends information or data to another device. For example, a network node transmitter can send a message to a user equipment. A receiver 1020 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network node. For example, a UE or a network node described in this document can be implemented using the hardware platform 1000. Figures 1 to 9 An example block diagram of a hardware platform 1000, which can be part of a network node (e.g., a base station or a transmission parameter) or a wireless node (e.g., a user equipment (UE)), is shown. The hardware platform 1000 includes at least one processor 1010 and a memory 1005 having instructions stored thereon. The instructions, when executed by the processor 1010, configure the hardware platform 1000 to perform the operations described in this patent document, in various embodiments, and various embodiments. A transmitter 1015 transmits or sends information or data to another device. For example, a network node transmitter can send a message to a user equipment. A receiver 1020 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network node. For example, a UE or a network node described in this document can be implemented using the hardware platform 1000.

[0113] The implementations discussed above will apply to wireless communications. Figure 11An example of a wireless communication system (e.g., a 5G or NR cellular network) is shown that includes base stations 1120 and one or more user equipment (UE) 1111, 1112, and 1113. In some embodiments, the UE uses a communication link to the network (sometimes referred to as the uplink direction, as depicted by dashed arrows 1131, 1132, 1133) to access the BS (e.g., the network), followed by enabling subsequent communication from the BS to the UE (e.g., shown in the direction from the network to the UE, sometimes referred to as the downlink direction, as shown by arrows 1141, 1142, 1143). In some embodiments, the BS sends information to the UE (sometimes referred to as the downlink direction, as depicted by arrows 1141, 1142, 1143), followed by enabling subsequent communication from the UE to the BS (e.g., shown in the direction from the UE to the BS, sometimes referred to as the uplink direction, as shown by dashed arrows 1131, 1132, 1133). The UE can be, for example, a smart phone, a tablet, a mobile computer, a machine to machine (M2M) device, and an Internet of Things (IoT) device, etc. The UEs described in this document can be communicatively coupled to the base stations 1120 as depicted in FIG. 11. The UEs can also communicate with the BS to communicate CSI. Figure 11

[0114] Those skilled in the art will appreciate that the present document discloses methods of measurement and reporting of timing advance related information. More specifically, the present patent document defines methods of measurement based timing advance value determination, timing advance value reporting, and conditions for cancelling measurement and reporting of timing advance related information.

[0115] ​Some of the embodiments described herein are described in the general context of methods or processes, which can be implemented in one embodiment by a computer program product, executable by computers in network environments, such as by computer readable media carrying computer-executable instructions, such as program code. Computer readable media can 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 (DVD), etc. Accordingly, computer readable media can include non-transitory storage media. Generally, program modules can include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The 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.

[0116] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuitry, software, or a combination thereof. For example, hardware circuitry implementations can include discrete analog and / or digital circuitry such as that integrated as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules can be implemented as Application Specific Integrated Circuit (ASIC) and / or Field Programmable Gate Array (FPGA) devices. Some implementations can additionally or alternatively include a digital signal processor (DSP), which is a specialized microprocessor optimized for the operation of digital signals associated with the disclosed functionality of the present application. Similarly, the various components or sub-components within each module can be implemented in software, hardware, or firmware. Connections between modules and / or components within a module can be provided using any of the connection methods and media known in the art, including but not limited to communication over the Internet, wired or wireless networks using suitable protocols.

[0117] While this document contains many specifics, these should not be construed as limitations on the scope of the invention or of what can be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented separately or in any suitable subcombination. Moreover, although features can be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination and the claimed combination can be directed to a subcombination or variation of a subcombination.

[0118] Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. A wireless communication method, comprising: The wireless node receives a first downlink reference signal set associated with the first transmission parameters and a second downlink reference signal set associated with the second transmission parameters; The wireless node determines the first timing of the first downlink frame associated with the first transmission parameters and the second timing of the second downlink frame associated with the second transmission parameters based on the first downlink reference signal set and the second downlink reference signal set. as well as The wireless node determines the timing offset between the first downlink frame associated with the first transmission parameters and the second downlink frame associated with the second transmission parameters based on the first timing and the second timing.

2. The method according to claim 1, further comprising: The wireless node determines a second timing advance value associated with the second transmission parameter based on the timing offset value and a first timing advance value associated with the first transmission parameter.

3. The method according to any one of claims 1 or 2, further comprising: The wireless node receives the timing advance measurement configuration.

4. The method according to claim 3, wherein, The timing advance measurement configuration includes at least one of the following: the timing advance measurement time period, the timing advance measurement duration, and the downlink reference signal used for timing advance measurement.

5. The method according to claim 4, wherein, Determining the timing offset value includes: determining the timing offset value in the time period configured by the timing advance measurement configuration, wherein the time period is in units of time slots, frames, or milliseconds.

6. The method according to claim 4, wherein, Determining the timing offset value includes: determining the timing offset value based on the reception of the downlink reference signal used for the timing advance measurement.

7. The method according to claim 4, wherein, The first downlink reference signal set and the second downlink reference signal set are associated with the downlink reference signal used for the timing advance measurement.

8. The method according to claim 3, wherein, The timing advance measurement configuration is specifically associated with either the first transmission parameter or the second transmission parameter.

9. The method according to claim 3, wherein, The timing advance measurement configuration is associated with both the first transmission parameter and the second transmission parameter.

10. The method according to claim 3, wherein, At least one of the first transmission parameter and the second transmission parameter is configured by the timing advance measurement configuration or indicated by a network message.

11. The method according to claim 10, wherein, The network message includes at least one of the following: a cell handover command, a media access control element for periodically reporting relevant information, and a downlink control information format, wherein the network message indicates the identifier of the first transmission parameter and the identifier of the second transmission parameter.

12. The method according to any one of claims 1 to 3, wherein, The timeline of the timing advance measurement corresponding to the first transmission parameter and the second transmission parameter is determined based on at least one of the following: the reception time of the downlink reference signal associated with the timing advance measurement, a predefined value, or a configured value.

13. A wireless communication method, comprising: The wireless node receives timed advance information reports, configurations, and / or network messages. as well as The wireless node transmits timing advance-related information corresponding to the transmission parameters based on the timing advance-related information report configuration and / or the network message.

14. The method according to claim 13, wherein, The configuration of the timed advance related information report includes at least one of the following: uplink resource information for timed advance related information reporting, time period for timed advance related information reporting, time slot information for timed advance related information reporting, and frame information for timed advance related information reporting.

15. The method according to claim 13, wherein, The transmission parameters are configured according to the timing advance related information report.

16. The method according to claim 13, wherein, The timing advance information includes at least one of the following: the identifier of the transmission parameter, the timing advance value, the timing offset value, or the timing advance offset value.

17. The method according to claim 16, wherein, The timing advance offset value is the difference between the timing advance value of the transmission parameter and the timing advance value of the reference transmission parameter, wherein the reference transmission parameter includes at least one of the following: special cell (SpCell), primary time alignment group (PTAG), serving cell, control resource set with zero value pool index, TAG with lowest TAG identifier number, and transmission parameter associated with type 1 common search space (CSS).

18. The method according to claim 13, wherein, The network message includes at least one of the following: cell handover command, media access control control element for periodically reporting relevant information, and downlink control information format.

19. The method of claim 13, further comprising: The wireless node generates a timing advance-related information report associated with the transmission parameters, which are configured according to the timing advance-related information report and / or indicated by the network message.

20. The method of claim 13, further comprising: The wireless node transmits a scheduling report before transmitting the timing advance information.

21. The method according to claim 13, wherein, Transmitting the timing advance-related information includes: transmitting the timing advance-related information in uplink resources, wherein the information of the uplink resources is indicated by at least one of the following: cell handover command, predefined rules, and timing advance-related information report configuration.

22. The method according to claim 21, wherein, The information of the uplink resources includes at least one of the following: subcarrier spacing, frequency hopping, bandwidth portion indication, time domain resource allocation, frequency domain resource allocation, number of time slots for repeated transmission of the physical uplink shared channel, and modulation and coding scheme value.

23. The method according to claim 21, wherein, The uplink resources are transmitted on the uplink carrier or supplementary uplink carrier of a special cell (SpCell) or secondary cell associated with the transmission parameters indicated by the network message.

24. A wireless communication method, comprising: The wireless node receives timing advance-related messages associated with the transmission parameters; as well as The wireless node terminates the timing advance measurement process and / or timing advance reporting process associated with the transmission parameters based on the timing advance related message.

25. The method of claim 24, further comprising: The wireless node determines the timing advance value associated with the transmission parameters based on the timing advance related message; as well as The wireless node overwrites the previous timing advance value associated with the transmission parameters and determined through the timing advance measurement process.

26. The method according to claim 24, wherein, Terminating the timing advance measurement process and / or the timing advance reporting process also responds to the initiation of a random access procedure associated with the transmission parameters.

27. The method of claim 24, further comprising: The wireless node removes the timing advance information associated with the transmission parameters stored by the wireless node.

28. A wireless communication method, comprising: The wireless node performs Physical Random Access Channel (PRACH) transmission in response to the initiation of a random access procedure associated with transmission parameters; as well as The transmission power of the PRACH transmission is determined by the wireless node based on priority rules, wherein the total transmission power of the PRACH transmission and other uplink transmissions does not exceed the power limit value.

29. The method according to claim 28, wherein, The priority rules include at least one of the following: the PRACH transmission associated with the transmission parameters has the highest priority; the priority of the PRACH transmission associated with the transmission parameters is only lower than the priority of the PRACH transmission on the primary cell (PCell); the priority of the PRACH transmission associated with the transmission parameters is not lower than the lowest priority; the PRACH transmission associated with the transmission parameters has the same priority order as the Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH) transmission with a higher priority index; and the PRACH transmission associated with the transmission parameters has the same priority order as the PUCCH / PUSCH transmission with specific uplink control information, wherein the specific uplink control information includes at least one of the following: Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information, Scheduling Request (SR), or Link Recovery Request (LRR).

30. A wireless communication method, comprising: The network node transmits a first downlink reference signal set associated with the first transmission parameter and a second downlink reference signal set associated with the second transmission parameter; The network node receives, based on the first downlink reference signal set and the second downlink reference signal set, a first timing of a first downlink frame associated with the first transmission parameters and a second timing of a second downlink frame associated with the second transmission parameters; as well as The network node receives the timing offset value between the first downlink frame associated with the first transmission parameters and the second downlink frame associated with the second transmission parameters, based on the first timing and the second timing.

31. A wireless communication method, comprising: Network nodes transmit relevant information reports and / or network messages in advance at regular intervals. as well as The network node receives the timing advance information corresponding to the transmission parameters based on the timing advance information report configuration and / or the network message.

32. A wireless communication method, comprising: The network node transmits timed advance messages associated with the transmission parameters; as well as The network node terminates the timing advance measurement process and / or timing advance reporting process associated with the transmission parameters based on the timing advance related message.

33. A wireless communication method, comprising: In response to the initiation of a random access procedure associated with transmission parameters, the network node receives the Physical Random Access Channel (PRACH) transmission; as well as The network node determines the transmission power of the PRACH transmission based on priority rules, wherein the total transmission power of the PRACH transmission and other uplink transmissions does not exceed the power limit value.

34. A wireless communication device, comprising a processor, wherein, The processor is configured to implement the method according to any one or more of claims 1 to 33.

35. A computer-readable program storage medium, wherein, The code is stored on the computer-readable program storage medium, and when executed by a processor, the code causes the processor to implement the method according to any one or more of claims 1 to 33.

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