Time-domain channel characteristics (TDCP) reporting method time limit and CPU occupancy

Abstract

This patent application discloses methods, apparatus, and systems related to time-domain channel characteristics (TDCP) reporting and CPU occupancy. In one example of the embodiments, a method for wireless communication comprises a wireless device reporting time-domain channel characteristics to a network device in a time slot n, wherein the time-domain channel characteristics are measured based on 1) a CSI reporting setting, or 2) multiple trace reference signal (TRS) opportunities determined based on a CSI reference resource.

Description

[Technical Field]

[0001] This patent document relates to wireless communications. [Background technology]

[0002] background Mobile communication technologies are driving the world towards an increasingly connected and networked society. Compared to existing wireless networks, next-generation systems and communication technologies need to support a much wider range of use case characteristics and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP®). LTE Advanced (LTE-A) is an advanced wireless communication standard based on the LTE standard. The fifth-generation wireless system, known as 5G, builds upon the LTE and LTE-A wireless standards to address higher data transfer speeds, greater connectivity, ultra-low latency, high reliability, and other new business needs. [Overview of the project] [Means for solving the problem]

[0004] overview This patent document discloses, in particular, techniques relating to time-domain channel characteristics (TDCP) reporting methods and SCI processing unit (CPU) occupancy in wireless communication networks.

[0005] In one embodiment, a wireless communication method is disclosed. The method comprises a wireless device reporting time-domain channel characteristics to a network device in a time slot n, the time-domain channel characteristics being measured based on 1) a CSI reporting setting, or 2) multiple trace reference signal (TRS) opportunities determined based on a CSI reference resource.

[0006] In another embodiment, a different wireless communication method is disclosed. The method comprises a network device receiving time-domain channel characteristics from a wireless device, the time-domain channel characteristics being measured based on 1) a CSI reporting setting and 2) a set of trace reference signals (TRS) determined based on a CSI reference resource.

[0007] In another embodiment, a different wireless communication method is disclosed. The method includes a wireless device transmitting a time-domain channel characteristic (TDCP) report, determined by a group of trace reference signal (TRS) opportunities, to a network node.

[0008] In another embodiment, a different wireless communication method is disclosed. The method includes a network node receiving a time-domain channel characteristic (TDCP) report from a wireless device, which is determined by a group of trace reference signal (TRS) opportunities, and performing an action based on the TDCP report.

[0009] In yet another embodiment, a wireless communication device is disclosed that includes a process configured or operable to perform the method described above.

[0010] In yet another embodiment, a computer-readable storage medium is disclosed. The computer-readable storage medium stores code that, when executed by a processor, causes the processor to implement the aforementioned method. [Brief explanation of the drawing]

[0011] [Figure 1]An example of a diagram of a high - speed railway scenario is shown.

[0012] [Figure 2] An example of a diagram showing the timeline of aperiodic CSI reports is shown.

[0013] [Figure 3] An example of a diagram showing the CPU occupancy time of TDCP reports is shown.

[0014] [Figure 4] An example of a diagram showing the CPU occupancy time of TDCP reports is shown.

[0015] [Figure 5] An example of a diagram showing the CPU occupancy time of TDCP reports is shown.

[0016] [Figure 6] An example of a block diagram of a hardware platform that may be part of a network device or a communication device for several embodiments of this document is shown.

[0017] [Figure 7] An example of network communication including a network device (BS) and a wireless device based on several embodiments of the disclosed technology is shown.

[0018] [Figure 8] A flowchart diagram of a method for wireless communication according to one or more embodiments of this technology. [Figure 9] A flowchart diagram of a method for wireless communication according to one or more embodiments of this technology. [Figure 10] A flowchart diagram of a method for wireless communication according to one or more embodiments of this technology. [Figure 11] A flowchart diagram of a method for wireless communication according to one or more embodiments of this technology. [Modes for carrying out the invention]

[0019] Detailed explanation Section headings are used in this document for ease of understanding and do not limit the scope of the disclosed technologies to any particular section. Furthermore, certain terms referring to 5G protocols and 3G Partnership Projects (3GPP®) protocols are used as illustrative examples, and the disclosed technologies are applicable to other wireless protocols as well.

[0020] The following describes in detail various embodiments of the present solution with reference to the figures or drawings below. The drawings are provided for illustrative purposes only and depict exemplary embodiments of the solution to facilitate the reader's understanding of the solution. Therefore, the drawings should not be considered to limit the scope, extent, or applicability of the solution. It should be noted that, for clarity and ease of illustration, these drawings are not necessarily drawn to actual size. It should be noted that in the disclosure of this patent application, a network node may be at least one of a location management function (LMF), a base station (BS) (e.g., a gNB, and / or a transmit / receive point TRP), or a core network.

[0021] In this patent, "UE" refers to a wireless communication device.

[0022] In this patent, "BS" refers to a wireless network device, next-generation node B (gNB), or TRP.

[0023] In this patent, "reference signal (RS)" corresponds to CSI-RS, RS for tracking, or tracking RS (TRS).

[0024] In this patent, "CSI reporting configuration signaling" corresponds to higher-level signaling, radio resource control (RRC), radio resource management (RRM), radio resource allocation (RRA), downlink control information (DCI), or physical downlink control channel (PDCCH).

[0025] In this patent, "TDCP" corresponds to CSI.

[0026] It should be noted that in this patent, “time unit” may be a subsymbol, symbol, slot, subframe, frame, or transmission opportunity.

[0027] In this patent, "channel correlation" corresponds to correlation, autocorrelation, correlation coefficient, channel autocorrelation, and channel correlation coefficient.

[0028] It should be noted that in this patent, "TRS burst" is defined as all opportunities for 2 / 4 of the CSI-RS resources within the TRS resource set.

[0029] TDCP is a type of CSI that indicates the rate of channel change between the UE and BS. TDCP is typically applied to two scenarios: high-speed rail scenarios and highway scenarios. The high-speed rail scenario is illustrated in Figure 1, in which case there are six remote radio heads (RRHs). To avoid handover procedures, several RRHs correspond to the same cell. This means there are elongated cells along the rail. Similarly, several transmission / receiving points (TRPs) are deployed along the highway.

[0030] Generally, TDCP includes one or more amplitudes and / or phases of channel correlations. Channel correlation c(τ) is measured via a special type of CSI-RS called TRS, in which two or four CSI-RS resources are configured in two consecutive slots. Detailed specifications for TRS can be found in Section 5.1.6.1.1 TS 38.214.

[0031] However, under existing standards, specific TDCP measurement and reporting procedures, including time limits and CPU occupancy for TDCP reporting, have not yet been determined. The proposed method is useful in proposing at least an applicable time limit and CPU occupancy scheme for TDCP reporting. The systems and methods described herein may include processes, procedures, and / or embodiments for signaling.

[0032] The exemplary embodiments disclosed herein are intended to solve problems relating to one or more of the problems presented in the prior art and to provide additional features which will become readily apparent by referring to the following detailed description in conjunction with the accompanying drawings. Exemplary systems, methods, devices, and computer program products are disclosed herein according to various embodiments. However, these embodiments are presented as examples and are not limiting, and it will be apparent to those skilled in the art that various modifications can be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0033] Embodiment 0 (Initial Study) TDCP reporting is a type of non-periodic CSI reporting. The general measurement and reporting procedure for TDCP is as follows: • The UE receives upper-layer signaling; • The UE receives a DCI that triggers a TDCP report; The UE measures TDCP via the TRS transmitted from the BS.

[0034] The TDCP report includes the following quantities: • Amplitude of channel correlation Y ≥ 1; • The phase of channel correlation Y≧1 when the upper layer parameter "PhaseReport" is configured to "on".

[0035] The channel correlation c(τ) can be measured by a pair of TRS opportunities with an interval of τ between opportunities. The formula for calculating c(τ) is: [ka] That is the case.

[0036] Here, τ refers to a time delay or lag, h n (τ) refers to the channel response to subcarrier n as measured by the TRS opportunity at time t. (·) * This refers to the conjugate operation. This formula shows that the amplitude of the channel correlation is normalized.

[0037] The UE reports TDCP to the BS via PUSCH as indicated by DCI.

[0038] Embodiment 1: Time Limit for TDCP Reporting The definition of CSI standard resources is given in [5 TS 38.214] as follows:

[0039] - In the frequency domain, a CSI reference resource is defined by a group of downlink physical resource blocks corresponding to the bandwidth to which the derived CSI is relevant.

[0040] - In the time domain, the CSI reference resource in the CSI report in uplink slot n' is a single downlink slot [ka] Defined by, [ka] This is a parameter configured by the upper layers specified in section 4.2 of [6 TS 38.213], [ka] The value for frequency range 1 is 0. [ka] This is a subcarrier spacing configuration for,

[0041] -Here, [ka] and [ka] This is the subcarrier spacing configuration for DL ​​and UL, respectively. [ka] and [ka] This is determined by the upper-layer configured ca-SlotOffset for the cells transmitting uplink and downlink, as defined in section 4.5 of [4, TS 38.211].

[0042] -In the case of aperiodic CSI reporting, if DCI instructs the UE to report the CSI in the same slot as the CSI request, n CSI_ref This is the case where the reference resource is in the same valid downlink slot as the corresponding CSI request, otherwise, n CSI_ref is slot nn CSI_ref To correspond to an active downlink slot, [ka] The minimum value above, Z', corresponds to the delay requirement defined in Section 5.4.

[0043] The definitions of Z and Z' are given in [5, TS 38.214] as follows:

[0044] When a CSI request field on DCI triggers a CSI report on PUSCH, the UE shall provide a valid CSI report for the nth triggered report.

[0045] - The first uplink symbol for carrying the corresponding CSI report including the effect of timing advance does not start earlier than symbol Z ref and

[0046] - The first uplink symbol for carrying the nth CSI report including the effect of timing advance does not start earlier than symbol Z’ ref (n),

[0047] where Z ref is defined as the next uplink symbol that starts after the end of the last symbol of the PDCCH whose CP triggers the CSI report

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[0048] For TDCP, when the CSI report configuration is associated with one or two aperiodic TRSs:

[0049] If the upper layer parameter timeRestictionForChannelMeasurement is set to "notConfigured", the UE shall derive the channel measurement values for calculating the TDCP reported in uplink slot n based only on the opportunities of the TRS that are not later than the CSI reference resource associated with the CSI resource configuration

[0050] If the upper-level parameter timeRestictionForChannelMeasurement is set to "Configured", the UE will derive the channel measurement for calculating the TDCP reported in uplink slot n based on only one pair of TRS opportunities, where the last TRS opportunity in the TRS opportunity pair is the most recent TRS opportunity associated with the CSI resource setting, not later than the CSI reference resource.

[0051] Regarding TDCP reporting, if the CSI reporting setting is associated with one periodic TRS and one non-periodic TRS:

[0052] If the upper-level parameter timeRestictionForChannelMeasurement is set to "notConfigured", the UE shall derive the channel measurement for calculating the TDCP reported in uplink slot n based solely on this.

[0053] Opportunities for aperiodic TRS that are not retrospective of CSI reference resources, associated with aperiodic CSI resource configuration.

[0054] A periodic TRS opportunity preceding a non-periodic TRS opportunity is associated with a periodic CSI resource setting. The periodic TRS opportunity must occur after the last symbol of the PDCCH, which triggers the TDCP report.

[0055] If the upper-level parameter timeRestictionForChannelMeasurement is set to "Configured", the UE will derive a channel measurement for calculating the TDCP reported in uplink slot n based on only one pair of TRS opportunities, where the last TRS opportunity in the TRS opportunity pair is the aperiodic TRS opportunity associated with the most recent, no later than the CSI reference resource, aperiodic CSI resource setting.

[0056] In a TRS opportunity pair, the first TRS opportunity is the periodic TRS opportunity preceding any non-periodic TRS opportunities associated with periodic CSI resource setting. The periodic TRS opportunity must occur after the last symbol of the PDCCH that triggers the TDCP report.

[0057] With regard to TDCP reporting, if the CSI reporting setting is associated with one periodic TRS with periodicity T1 and Y-1 periodic TRS with the same periodicity T2 (where T1 is an integer multiple of T2).

[0058] If the upper-level parameter timeRestictionForChannelMeasurement is set to "notConfigured", the UE will:

[0059] The opportunity for TRS with a T2 periodicity, which is associated with CSI resource settings, is not later than the CSI reference resource, and

[0060] Channel measurements for calculating the TDCP reported in uplink slot n shall be derived based solely on T1 periodic TRS opportunities prior to shorter periodic TRS opportunities associated with CSI resource settings.

[0061] These opportunities for TRS must occur after the last symbol of PDCCH, which triggers TDCP reporting.

[0062] If the upper-level parameter timeRestictionForChannelMeasurement is set to "notConfigured", the UE derives channel measurements for calculating each channel correlation in the TDCP reported in uplink slot n based on only one pair of TRS opportunities, where the last TRS opportunity in the pair is the most recent TRS opportunity with a periodicity of T2 associated with the CSI resource setting, not later than the CSI reference resource.

[0063] In a pair of TRS opportunities, the first TRS opportunity is a T1 periodic TRS opportunity that precedes a longer periodic TRS opportunity associated with CSI resource setting.

[0064] This pair of TRS opportunities must occur after the last symbol of the PDCCH that triggers the TDCP report.

[0065] Regarding TDCP reporting, if the CSI reporting setting is associated with one or more periodic TRSs with the same periodicity.

[0066] If the upper-level parameter timeRestictionForChannelMeasurement is set to "notConfigured", the UE shall derive the channel measurement for calculating the TDCP reported in uplink slot n based solely on this.

[0067] A TRS opportunity that is not later than the CSI standard resource, associated with the CSI resource configuration.

[0068] These opportunities for TRS must occur after the last symbol of the PDCCH that triggers the TDCP report.

[0069] If the upper-level parameter timeRestictionForChannelMeasurement is set to "Configured", the UE will derive channel measurements to calculate each channel correlation in the TDCP reported in uplink slot n based on only one pair of TRS opportunities, and the last TRS opportunity in the TRS opportunity pair must be the most recent TRS opportunity associated with the CSI resource setting, not later than the CSI reference resource.

[0070] In a TRS opportunity pair, the first TRS opportunity must occur after the last symbol of the PDCCH that triggers the TDCP report, associated with the CSI resource setting(s).

[0071] In the case of TDCP reporting, Z and Z' are determined by one of the following methods: ●Z and Z' are [ka] It is defined as, and here, [ka] This is defined in Table 5.4-2 of [5 TS 38.214].

[0072] Z and Z' are [ka] It is defined as such, where V is a constant value whose candidate values ​​are {1, 2, ..., 100}.

[0073] Z and Z' are given by the formula [ka] This is determined by Z2, Z2' and Q, where Q is the UE capability.

[0074] Z and Z' are given by the formula [ka] The delays corresponding to the channel correlations are determined by Z2, Z2', Y, and τ, where Y is the amplitude and / or phase number of the channel correlation in the TDCP report, and Y is {τ, 2τ, ..., Yτ}.

[0075] Z and Z' are given by the formula [ka] It is determined by Z2, Z2', Y, τ, and Q accordingly.

[0076] Z and Z' are determined by Z2, Z2', Y, τ, and X, where X is the number of slots in the TRS burst according to one of the following equations: [ka] [Table 1]

[0077] Embodiment 2: CPU Occupancy in TDCP Reporting TDCP occupies several CPUs for one or more durations by one of the following methods:

[0078] TDCP reporting occupies the CPU for only one continuous period of time.

[0079] TDCP reporting occupies the CPU from the first symbol after the PDCCH that carries the DCI that triggers the TDCP report until the last symbol of the scheduled PUSCH that carries the TDCP report. The CPU occupancy time is illustrated in Figure 3.

[0080] Number of CPUs occupied by TDCP reporting: O CPU This is determined by one of the following methods.

[0081] O CPU =1

[0082] O CPU This is determined by the UE capability K, i.e., O CPU = K.

[0083] O CPU This is determined by Y according to one of the following equations. [ka]

[0084] O CPUThis is determined by Y and UE capability K according to one of the following formulas. [ka]

[0085] O CPU This is determined by Y and M, where M is the number of TRS opportunity pairs used to derive each channel correlation in the TDCP report according to one of the following equations: [ka]

[0086] O CPU This is determined by Y, M, and UE capability K according to one of the following formulas. [ka]

[0087] TDCP reporting occupies the CPU over multiple (and sometimes partially overlapping) durations by one of the following methods:

[0088] Each TRS opportunity used to derive the channel measurement for calculating TDCP occupies the CPU from the TRS opportunity symbol to the P symbols following it. The CPU occupancy times are illustrated in Figure 4.

[0089] The candidate values ​​for P are {5, 6, ..., 20}.

[0090] The number of CPUs occupied by each TRS opportunity used to drive channel measurements for calculating TDCP is O CPU This is determined by one of the following methods. ·O CPU =1, ·O CPU This is determined by the UE capability K, i.e., O CPU = K.

[0091] Each TRS opportunity, except for the last one, used to derive the channel measurement for calculating TDCP occupies the CPU from the TRS opportunity symbol to the P symbols after the TRS opportunity symbol; the last TRS opportunity used to derive the channel measurement for calculating TDCP occupies the CPU from the TRS opportunity symbol to the last symbol of the configured PUSCH carrying the TDCP report. The CPU occupancy times are illustrated in Figure 5.

[0092] The candidate values ​​for P are {5, 6, ..., 20}.

[0093] Each TRS opportunity, except for the last one, is used to drive the channel measurements for calculating TDCP, O CPU =1 occupies the CPU.

[0094] The number of CPUs occupied by the last TRS opportunity, used to drive the channel measurement for calculating TDCP. CPU This is determined by one of the following methods. ·O CPU =1, ·O CPU This is determined by the UE capability K, i.e., O CPU = K.

[0095] O CPU This is determined by Y according to one of the following equations. [ka]

[0096] O CPU This is determined by Y and UE capability K according to one of the following formulas. [ka]

[0097] Figure 6 shows a typical block diagram of a hardware platform 600, which may be part of a network device (e.g., a base station) or a communication device (e.g., a user device (UE)). The hardware platform 600 includes at least one processor 610 and a memory 605 in which instructions are stored. Runtime instructions from the processor 610 configure the hardware platform 600 to perform the operations described in Figure 6 and the various embodiments described in this patent application. A transmitter 615 transmits or sends information or data to other devices. For example, a network device transmitter may send a message to user device. A receiver 620 receives information or data transmitted or sent by another device. For example, user device may receive a message from a network device.

[0098] The embodiments described above apply to network communications. Figure 7 shows an example of a communications system (e.g., a 6G or NR cellular network) including a base station 720 and one or more user devices (UEs) 711, 712, and 713. In some embodiments, the UEs access a BS (e.g., the network) using a communications link to the network (sometimes called the uplink direction, as depicted by dashed arrows 731, 732, and 733), thereby enabling subsequent communications from the BS to the UE (sometimes called the downlink direction, as indicated by arrows 741, 742, and 743, shown in the direction from the network to the UE). In some embodiments, the BS transmits information to the UE (sometimes called the downlink direction, as depicted by arrows 741, 742, and 743), thereby enabling subsequent communications from the UE to the BS (sometimes called the uplink direction, as indicated by dashed arrows 731, 732, and 733, shown in the direction from the UE to the BS). The UE may be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, or Internet of Things (IoT) device.

[0099] Several preferred embodiments are not described. In one example of an embodiment (for example, shown in Figure 8), a wireless communication method is disclosed. The method comprises a wireless device reporting time-domain channel characteristics in time slot n to a network device (802), the time-domain channel characteristics being measured based on 1) a CSI reporting setting, or 2) multiple trace reference signal (TRS) opportunities determined based on a CSI reference resource.

[0100] In another exemplary embodiment (for example, as depicted in Figure 9), another wireless communication method is disclosed. The method includes a network device receiving time-domain channel characteristics from a wireless device (902), the time-domain channel characteristics being measured based on 1) a CSI reporting setting and 2) a set of trace reference signals (TRS) determined based on a CSI reference resource.

[0101] In some embodiments, the method further includes: a wireless device receiving downlink control information (DCI) from a network device indicating a CSI reporting setting, the CSI reporting setting being associated with a CSI resource setting and including the parameter timeRestrictionForChannelMeasurements; the wireless device receiving a TRS from the network device; and the wireless device measuring time-domain channel characteristics to the network device, including at least one of the amplitude and phase of a plurality of channel correlations, each of which channel correlations is determined based on 1) a CSI reporting setting and 2) a plurality of TRS opportunities determined based on a CSI reference resource.

[0102] In some embodiments, when a CSI reporting setting is associated with one or more aperiodic CSI resource settings, if the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "notConfigured", the multiple TRS opportunities are selected from multiple TRS opportunities associated with one or two aperiodic CSI resource settings, and the multiple TRS opportunities are not later than the CSI reference resource in the time domain. If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", the multiple TRS opportunities include a first TRS opportunity and a second TRS opportunity that follows the first TRS opportunity, and the multiple TRS opportunities are selected from multiple TRS opportunities associated with one or more aperiodic CSI resource settings, and the multiple TRS opportunities are not later than the CSI reference resource.

[0103] In some embodiments, the second TRS opportunity is the slot closest to slot n and is not later than the CSI reference resource in the time domain.

[0104] In some embodiments, when a CSI reporting setting is associated with periodic CSI resource settings and aperiodic CSI resource settings, if the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "notConfigured", then multiple TRS opportunities are selected from a first group of TRS opportunities associated with aperiodic CSI resource settings and a second group of TRS opportunities associated with periodic CSI resource settings, wherein the multiple TRS opportunities are not after the CSI reference resource and the second group of TRS opportunities are before the first group of TRS opportunities. If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", then multiple TRS opportunities include a first TRS opportunity selected from a group of TRS opportunities associated with periodic CSI resource settings and a second TRS opportunity selected from a group of TRS opportunities associated with aperiodic CSI resource settings, wherein the second TRS opportunity is after the first TRS opportunity and the multiple TRS opportunities are not after the CSI reference resource.

[0105] In some embodiments, the second TRS opportunity is closest to slot n and not later than the CSI reference resource in the time domain.

[0106] In some embodiments, multiple TRS opportunities are located after the last symbol in the physical downlink control channel (PDCCH) signaling.

[0107] In some embodiments, a CSI reporting setting is associated with a first periodic CSI resource setting that includes a CSI reference signal (CSI-RS) resource with periodicity T1, and a second periodic CSI resource setting that includes a CSI-RS resource with periodicity T2, and when T1 is greater than or equal to T2, if the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "notConfigured", then multiple TRS opportunities are selected from a first group of TRS opportunities associated with the first CSI resource setting and a second group of TRS opportunities associated with the second periodic CSI resource setting, and the multiple TRS opportunities are CSI reference If the first group of TRS opportunities precedes the second group of TRS opportunities and the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", then multiple TRSs include a first TRS opportunity selected from a group of TRS opportunities associated with at least one of the first periodic CSI resource setting and the second periodic CSI resource setting, and a second TRS opportunity selected from a group of TRS opportunities associated with the second periodic CSI resource setting, where the first TRS opportunity precedes the second TRS opportunity and the multiple TRS opportunities do not precede the CSI reference resource.

[0108] In some embodiments, the second TRS opportunity is closest to slot n and not later than the CSI reference resource.

[0109] In some embodiments, multiple TRS opportunities are located after the last symbol in the physical downlink control channel (PDCCH) signaling.

[0110] In some embodiments, when a CSI reporting setting is associated with at least one periodic CSI resource setting that includes a CSI-RS resource having the same period, if the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "notConfigured", then multiple TRS opportunities are selected from a group of TRS opportunities associated with at least one of the periodic CSI resource settings, and the multiple TRS opportunities are not later than the CSI reference resource. If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", then multiple TRSs include a first TRS opportunity and a second TRS opportunity that follows the first TRS opportunity, and the multiple TRS opportunities are selected from a group of TRS opportunities associated with at least one of the periodic CSI resource settings, and the multiple TRS opportunities are not later than the CSI reference resource.

[0111] In some embodiments, the second TRS opportunity is closest to slot n and not later than the CSI reference resource.

[0112] In some embodiments, multiple TRS opportunities are located after the last symbol in the physical downlink control channel (PDCCH) signaling.

[0113] In some embodiments, channel correlation is further measured based on parameters Z and Z' which depend on parameters Z2 and Z2', and Z2 and Z2' are determined by checking a given table.

[0114] In some embodiments, Z and Z' are determined as Z = Z² + V and Z' = Z²' + V, where V is an integer selected from the set {1, 2, ..., 100}.

[0115] In some embodiments, Z and Z' are determined as Z = Z2 + Q and Z' = Z2' + Q, where Q is an integer representing the capability of the wireless device.

[0116] In some embodiments, Z and Z' are determined based on at least one of the following: 1) an integer V selected from a set {1, 2, ... 100}, 2) an integer Q indicating the capability of the wireless device, 3) an integer Y indicating the number of amplitudes and / or phases of channel correlations in the time-domain channel characteristics, 4) an integer X indicating the number of slots in the TRS burst, or 5) a parameter indicating the delay of channel correlations.

[0117] In another exemplary embodiment (for example, as depicted in Figure 10), another wireless communication method is disclosed. This method includes a wireless device transmitting a time-domain channel characteristic (TDCP) report, determined by a group of tracking reference signal (TRS) opportunities, to a network node (1002).

[0118] In another exemplary embodiment (for example, as depicted in Figure 11), another wireless communication method is disclosed. This method includes a network node receiving a time-domain channel characteristic (TDCP) report from a wireless device, which is determined by a group of tracking reference signal (TRS) opportunities (1102), and performing an action based on the TDCP report.

[0119] In some embodiments, the method includes a wireless device receiving a DCI carried on a PDCCH that triggers a TDCP report, the wireless device determining a TDCP report based on multiple TRS opportunities, and the wireless device transmitting the TDCP report on a PUSCH to a network device.

[0120] In some embodiments, the TDCP report occupies multiple CPUs for a continuous duration from the first symbol of the physical downlink control channel (PDCCH) signal to the last symbol of the physical uplink shared channel (PUSCH) carrying the TDCP report.

[0121] In some embodiments, the number of CPUs is 1.

[0122] In some embodiments, the number of CPUs depends on at least one of K or Y, where Y represents the number of channel correlation amplitudes included in the TDCP report, and K represents the capability of the wireless device.

[0123] In some embodiments, the number of CPUs depends on at least one of K or M, where K represents the capability of the wireless device and M represents the number of TRS opportunity pairs used to determine channel correlation in TDCP reporting.

[0124] In some embodiments, the number of CPUs depends on at least one of K, Y, or M, where K represents the capability of the wireless device, M represents the number of TRS opportunity pairs used to determine channel correlation in TDCP, and Y represents the number of channel correlation amplitudes included in TDCP.

[0125] In some embodiments, each of the multiple TRS opportunities occupies multiple CPUs for the duration of P consecutive symbols, starting from the symbol that carries the TRS opportunity.

[0126] In some embodiments, P is selected from the set {5, 6, ..., 20}.

[0127] In some embodiments, the number of CPUs is 1.

[0128] In some embodiments, the number of CPUs is K, where K represents the capability of the wireless device.

[0129] In some embodiments, each of the multiple TRS opportunities, with the exception of the last one, occupies multiple CPUs for the duration of P consecutive symbols, starting with the symbol carrying the TRS opportunity.

[0130] In some embodiments, P is selected from the set {5, 6, ..., 20}.

[0131] In some embodiments, the number of CPUs is 1.

[0132] In some embodiments, the number of CPUs is determined by at least one of K or Y, where K represents the capability of the wireless device and Y represents the number of channel correlation amplitudes included in the TDCP report.

[0133] In some embodiments, the last of multiple TRS opportunities occupies multiple CPUs over a duration from the symbol carrying the TRS opportunity to the last symbol of the PUSCH carrying the TDCP report.

[0134] In some embodiments, the number of CPUs is 1.

[0135] In some embodiments, the number of CPUs is determined by at least one of K or Y, where K represents the capability of the wireless device and Y represents the number of channel correlation amplitudes included in the TDCP report.

[0136] Figures 8 to 11 show various preferred embodiments and additional features of the aforementioned method. Further examples are described in relation to embodiments 0 to 2.

[0137] Under existing standards, specific TDCP measurement and reporting procedures, including time limits and CPU occupancy for TDCP reporting, have not yet been determined. The proposed method is useful for proposing at least an applicable time limit and CPU occupancy scheme for TDCP reporting. The systems and methods described herein may include processes, procedures, and / or embodiments for signaling.

[0138] The disclosed and other embodiments, modules, and functional operations described herein may be implemented in digital electronic circuits, or in computer software, firmware, or hardware, or one or more combinations thereof, including the structures disclosed herein and their structural equivalents. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., as one or more modules of computer program instructions encoded on a computer-readable medium for execution by a data processing device or for controlling the operation of a data processing device. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of a material that provides a machine-readable propagating signal, or one or more combinations thereof. The term “data processing device” encompasses all devices and machines for processing data, including, for example, a programmable processor, a computer, or multiple processors or computers. In addition to hardware, a device may include code that constitutes the execution environment of the computer program in question, such as processor firmware, a protocol stack, a database management system, an operating system, or one or more combinations thereof. A propagating signal is an artificially generated signal, such as a mechanically generated electrical signal, optical signal, or electromagnetic signal, that is produced to encode information for transmission to a suitable receiving device.

[0139] Computer programs (also known as programs, software, software applications, scripts, or code) can be written in any form of programming language, including compiled or interpreted languages, and can be deployed as standalone programs or in any form, including modules, components, subroutines, or other units suitable for use in a computing environment. Computer programs do not necessarily correspond to files in a file system. A program may be stored in part of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple collaborative files (e.g., files that store one or more modules, subprograms, or parts of code). Computer programs may be deployed to run on one computer, located in one site, or distributed across multiple sites and interconnected by a communication network.

[0140] The processes and logic flows described herein may be carried out by one or more programmable processors that execute one or more computer programs to perform their functions by operating on input data and generating outputs. The processes and logic flows may also be carried out by dedicated logic circuits, such as FPGAs (Field-Programmable Gate Arrays) or ASICs (Application-Specific Integrated Circuits), and the devices themselves may also be implemented as such dedicated logic circuits.

[0141] Processors suitable for executing computer programs include, for example, both general-purpose and dedicated microprocessors, and any one or more processors in any type of digital computer. Generally, a processor receives instructions and data from read-only memory or random-access memory, or both. Essential elements of a computer are a processor for executing instructions, and one or more memory devices for storing instructions and data. Generally, a computer also includes one or more mass storage devices for storing data, such as magnetic disks, magneto-optical disks, or optical disks, or is operablely coupled to them to receive data from them, transfer data to them, or both. However, a computer is not required to have such devices. Computer-readable media suitable for storing computer program instructions and data include, for example, semiconductor memory devices such as EPROM, EEPROM, and flash memory devices, magnetic disks such as internal hard disks or removable disks, magneto-optical disks, and CD-ROM and DVD-ROM disks, and all forms of non-volatile memory, media, and memory devices. Processors and memory can be complemented by or incorporated into dedicated logic circuits.

[0142] While this document contains many details, these should not be interpreted as limitations on the scope of the claimed invention or what can be claimed, but rather as descriptions of features specific to particular embodiments. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may be implemented separately or in any suitable partial combination in multiple embodiments. Furthermore, features described above as acting in a particular combination and initially claimed as such, one or more features from a claimed combination may, in some cases, be removed from the combination, and the claimed combination may be subject to partial combinations or variations of partial combinations. Similarly, while actions are illustrated in a particular order in the drawings, this should not be interpreted as requiring that such actions be performed in a specific order shown, or in a sequential order, or that all illustrated actions be performed, in order to achieve the desired result.

[0143] Only a few examples and embodiments are disclosed. Variations, modifications, and enhancements to the described examples and embodiments, as well as to other embodiments, may be made based on what is disclosed.

Claims

1. A method for wireless communication, A wireless device reports time-domain channel characteristics to a network device in a time slot n, wherein the time-domain channel characteristics are measured based on 1) channel state information CSI reporting settings, or 2) multiple tracking reference signal (TRS) opportunities determined based on CSI reference resources. Methods that include...

2. The wireless device receives downlink control information (DCI) from a network device indicating the CSI reporting settings, wherein the CSI reporting settings are associated with CSI resource settings and include the parameter timeRestrictionForChannelMeasurements. The wireless device receives a TRS from the network device, The wireless device measures time-domain channel characteristics with respect to the network device, including at least one of the amplitude and / or phase of one or more channel correlations, wherein each of the one or more channel correlations is determined based on 1) the CSI reporting settings and 2) a plurality of TRS opportunities determined based on the CSI reference resources. The method according to claim 1, further comprising:

3. A method for wireless communication, A network device receives time-domain channel characteristics from a wireless device, wherein the time-domain channel characteristics are measured based on 1) CSI reporting settings and 2) a set of tracking reference signals (TRS) determined based on CSI reference resources. Methods that include...

4. When the CSI reporting setting is associated with one or more aperiodic CSI resource settings, If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting configuration is set to "notConfigured", the multiple TRS opportunities are selected from the multiple TRS opportunities associated with one or two aperiodic CSI resource configurations, and the multiple TRS opportunities are not later than the CSI reference resource in the time domain, and The method according to claim 2, wherein, when the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", the plurality of TRS opportunities include a first TRS opportunity and a second TRS opportunity that follows the first TRS opportunity, the plurality of TRS opportunities are selected from the plurality of TRS opportunities associated with one or more aperiodic CSI resource settings, and the plurality of TRS opportunities are not later than the CSI reference resource.

5. The method according to claim 4, wherein the second TRS opportunity is the slot closest to slot n and is not later than the CSI reference resource in the time domain.

6. When the CSI reporting settings are associated with periodic CSI resource settings and non-periodic CSI resource settings, If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting settings is set to "notConfigured", the multiple TRS opportunities are selected from a first group of TRS opportunities associated with the non-periodic CSI resource settings and a second group of TRS opportunities associated with the periodic CSI resource settings, and the multiple TRS opportunities are not after the CSI reference resource, and the second group of TRS opportunities is before the first group of TRS opportunities, and The method according to claim 2, wherein when the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", the plurality of TRS opportunities include a first TRS opportunity selected from the group of TRS opportunities associated with the periodic CSI resource setting and a second TRS opportunity selected from the group of TRS opportunities associated with the non-periodic CSI resource setting, wherein the second TRS opportunity is after the first TRS opportunity and the plurality of TRS opportunities are not after the CSI reference resource.

7. The method according to claim 6, wherein the second TRS opportunity is closest to slot n and is not later than the CSI reference resource in the time domain.

8. The method according to claim 6, wherein the plurality of TRS opportunities are located after the last symbol of the physical downlink control channel (PDCCH) that carries the DCI.

9. The CSI reporting setting is associated with a first periodic CSI resource setting that includes a CSI reference signal (CSI-RS) resource with periodicity T1, and a second periodic CSI resource setting that includes a CSI-RS resource with periodicity T2, and when T1 is greater than or equal to T2, When the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "notConfigured", the multiple TRS opportunities are selected from a first group of TRS opportunities associated with the first CSI resource setting and a second group of TRS opportunities associated with the second periodic CSI resource setting, the multiple TRS opportunities are not after the CSI reference resource, the first group of TRS opportunities are before the second group of TRS opportunities, and The method according to claim 2, wherein when the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", the plurality of TRSs include a first TRS opportunity selected from a group of TRS opportunities associated with at least one of the first periodic CSI resource setting and the second periodic CSI resource setting, and a second TRS opportunity selected from a group of TRS opportunities associated with the second periodic CSI resource setting, wherein the first TRS opportunity precedes the second TRS opportunity, and the plurality of TRS opportunities are not after the CSI reference resource.

10. The method according to claim 9, wherein the second TRS opportunity is closest to slot n and not later than the CSI reference resource.

11. The method according to claim 9, wherein the plurality of TRS opportunities are located after the last symbol of the physical downlink control channel (PDCCH) that carries the DCI.

12. When the CSI reporting setting is associated with at least one periodic CSI resource setting that includes a CSI-RS resource having the same period, If the parameter timeRestrictionForChannelMeasurements included in the CSI reporting configuration is set to "notConfigured", the multiple TRS opportunities are selected from a group of TRS opportunities associated with at least one of the periodic CSI resource configurations, and the multiple TRS opportunities are not after the CSI reference resource. The method according to claim 2, wherein, if the parameter timeRestrictionForChannelMeasurements included in the CSI reporting setting is set to "Configured", the plurality of TRSs include a first TRS opportunity and a second TRS opportunity that follows the first TRS opportunity, the plurality of TRS opportunities are selected from a group of TRS opportunities associated with at least one of the periodic CSI resource settings, and the plurality of TRS opportunities are not later than the CSI reference resource.

13. The method according to claim 12, wherein the second TRS opportunity is closest to slot n and not later than the CSI reference resource.

14. The method according to claim 12, wherein the plurality of TRS opportunities are located after the last symbol of the physical downlink control channel (PDCCH) that carries the DCI.

15. The aforementioned channel correlation is parameter Z ２ Z ２ Further measurements are taken based on the parameters Z and Z' which depend on Z ２ and Z ２ The method according to claim 2, wherein ' is determined by checking a predetermined table.

16. Z and Z' are, Z = Z ２ +V. Z' = Z ２ The method according to claim 15, wherein the formula is determined as ' + V, where V is an integer selected from the set {1, 2, ..., 100}.

17. Z and Z' are, Z = Z ２ +Q. Z' = Z ２ The method according to claim 15, wherein the result is determined as '+Q', where Q is an integer representing the capability of the wireless device.

18. The method according to claim 15, wherein Z and Z' are determined based on at least one of the following: 1) an integer V selected from a set {1, 2, ... 100}, 2) an integer Q indicating the capability of the wireless device, 3) an integer Y indicating the number of amplitudes and / or phases of channel correlations in the time-domain channel characteristics, 4) an integer X indicating the number of slots in a TRS burst, or 5) a parameter indicating the delay of channel correlations.

19. A method for wireless communication, The wireless device transmits a time-domain channel characteristics (TDCP) report to a network node, which is determined by a group of tracking reference signal (TRS) opportunities. Methods that include...

20. The wireless device receives the DCI being carried on the PDCCH, which triggers the TDCP report. The wireless device determines the TDCP report based on multiple TRS opportunities, The wireless device transmits the TDCP report to the network device via PUSCH. The method according to claim 19, further comprising:

21. A method for wireless communication, The network node receives a time-domain channel characteristics (TDCP) report from a wireless device, which is determined by a group of tracking reference signal (TRS) opportunities. The operation is performed based on the aforementioned TDCP report. Methods that include...

22. The method according to claim 20, wherein the TDCP report occupies multiple CPUs for a continuous duration from the first symbol of the physical downlink control channel (PDCCH) carrying the DCI to the last symbol of the physical uplink shared channel (PUSCH) carrying the TDCP report.

23. The method according to claim 22, wherein the number of the plurality of CPUs is 1.

24. The method according to claim 22, wherein the number of the plurality of CPUs depends on at least one of K or Y, where Y represents the number of channel correlation amplitudes included in the TDCP report and K represents the capability of the wireless device.

25. The method according to claim 22, wherein the number of the plurality of CPUs depends on at least one of K or M, where K represents the capability of the wireless device and M represents the number of TRS opportunity pairs used to determine channel correlation in TDCP reporting.

26. The method according to claim 22, wherein the number of the plurality of CPUs depends on at least one of K, Y, or M, where K represents the capability of the wireless device, M represents the number of TRS opportunity pairs used to determine the channel correlation in the TDCP, and Y represents the number of channel correlation amplitudes included in the TDCP.

27. The method according to claim 20, wherein each of the plurality of TRS opportunities occupies a plurality of CPUs for the duration of P consecutive symbols starting from the symbol that carries the TRS opportunity.

28. The method according to claim 27, wherein P is selected from the set {5, 6, ..., 20}.

29. The method according to claim 27, wherein the number of the plurality of CPUs is 1.

30. The method according to claim 27, wherein the number of the plurality of CPUs is K, where K represents the capability of the wireless device.

31. The method according to claim 20, wherein each of the plurality of TRS opportunities, excluding the last TRS opportunity, occupies a plurality of CPUs for the duration of P consecutive symbols starting from the symbol that carries the TRS opportunity.

32. The method according to claim 31, wherein P is selected from the set {5, 6, ..., 20}.

33. The method according to claim 31, wherein the number of the plurality of CPUs is 1.

34. The method according to claim 31, wherein the number of the plurality of CPUs is determined by at least one of K or Y, where K represents the capability of the wireless device and Y represents the number of channel correlation amplitudes included in the TDCP report.

35. The method according to claim 20, wherein the last TRS opportunity of the plurality of TRS opportunities occupies a plurality of CPUs for a duration starting from the symbol carrying the TRS opportunity to the last symbol of the PUSCH carrying the TDCP report.

36. The method according to claim 35, wherein the number of the plurality of CPUs is 1.

37. The method according to claim 35, wherein the number of the plurality of CPUs is determined by at least one of K or Y, where K represents the capability of the wireless device and Y represents the number of channel correlation amplitudes included in the TDCP report.

38. A device for a communication network, the device comprising a processor configured to carry out the method according to any one of claims 1 to 37.

39. A computer-readable storage medium in which a code is stored, wherein the code, when executed by a processor, causes the processor to perform the method according to any one of claims 1 to 37.

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