Time-domain correlation property reporting method and apparatus

Abstract

The present disclosure is directed to a method, a system, and a device for providing a data transmission service for a plurality of users with different moving speeds, more specifically related to wireless communication. The method of wireless communication includes receiving, by a wireless communication device, a reference signal (RS) (402), receiving, by the wireless communication device, channel state information (CSI) reporting configuration signaling (404), determining, by the wireless communication device, according to the RS and the CSI reporting configuration signaling (406), and transmitting, by the wireless communication device, CSI to a network device according to the CSI reporting configuration signaling (408).

Description

Technical Field

[0001] The present disclosure generally relates to wireless communication.

Background Art

[0002] Wireless communication technologies are moving the world towards an increasingly connected and networked society. The rapid growth of wireless communication and the progress in technology have led to an increasing demand for capacity and connectivity. Other aspects such as energy consumption, device cost, spectral efficiency, and latency are also important to meet the requirements of various communication scenarios. Compared with existing wireless networks, next-generation systems and wireless communication techniques need to provide support for an increasing number of users and devices and for an increasingly expanding mobile society.

Summary of the Invention

Means for Solving the Problems

[0003] Disclosed are various techniques that may be implemented by embodiments in mobile communication technologies, including fifth-generation (5G), New Radio (NR), fourth-generation (4G), and Long-Term Evolution (LTE) communication systems.

[0004] In one exemplary aspect, a wireless communication method is disclosed. The method includes receiving, by a wireless communication device, a reference signal (RS); receiving, by the wireless communication device, channel state information (CSI) reporting configuration signaling; determining, by the wireless communication device, according to the RS and the CSI reporting configuration signaling; and transmitting, by the wireless communication device, to a network device, CSI according to the CSI reporting configuration signaling.

[0005] In another exemplary aspect, another wireless communication method is disclosed. The method includes transmitting a reference signal (RS) to a wireless communication device, transmitting channel state information (CSI) reporting configuration signaling to the wireless communication device, determining by the wireless communication device according to the RS and the CSI reporting configuration signaling, and receiving, by the network device from the wireless communication device, the CSI according to the CSI reporting configuration signaling.

[0006] In yet another exemplary aspect, the method described above is embodied in the form of a computer-readable medium storing processor-executable code for implementing the method.

[0007] In yet another exemplary embodiment, a device configured or operable to implement the method described above is disclosed. The device includes a processor configured to implement the method.

[0008] The above and other aspects and their implementations are described in more detail in the drawings, the description, and the claims.

Brief Description of the Drawings

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[0016] **Detailed Description** The section headings are used in this document only to improve readability and do not limit the scope of the disclosed embodiments and techniques within each section to that section only. Some features are described using examples of 5th generation (5G) wireless protocols. However, the applicability of the disclosed techniques is not limited to 5G wireless systems only.

[0017] Often, a 5G base station (BS) needs to provide data transmission services for multiple users with different moving speeds. Different moving speeds will lead to different channel change speeds between the user and the BS. To improve the quality of service, the BS can obtain the time domain correlation property (TDCP) of the channel and thus configure different service policies for different users. The TDCP can be measured by a user equipment (UE) and reported to the BS. The specific method of TDCP reporting has not yet been determined, and this document discloses some solutions to address this issue.

[0018] TDCP is a type of channel state information (CSI), which indicates the change speed of the channel between the UE and the BS. TDCP is typically applied in two scenarios, namely, the high-speed railway scenario and the highway scenario.

[0019] As shown in Fig. 1, the high-speed railway scenario is illustrated with six remote radio heads (RRHs). To save the handover procedure, some of the RRHs correspond to the same cell. This means that there are elongated cells along the railway. Similarly, there are several transmission / reception points (TRPs) deployed along the highway.

[0020] Currently, two categories of properties are regarded as alternatives to TDCP.

[0021] The first category is the time-domain property, i.e., the time-domain correlation of the channel. The channel correlation function c(τ) is defined as follows, i.e.,

Equation

[0022] The second category is the Doppler-domain property, i.e., the Doppler shift or Doppler spread, which is extracted from the Doppler spectrum. The Doppler spectrum is the discrete Fourier transform (DFT) of the equally spaced samples of c(τ) at discrete intervals, which can be expressed as C(n) = DFT[c(n)] as follows, where C(n) represents the Doppler spectrum, c(n) = c(nΔτ) represents the samples of c(τ), Δτ represents the sampling space, and DFT(·) represents the DFT operation.

[0023] Regardless of the category of the properties used, the specific solution for TDCP reporting has not yet been determined.

[0024] The explanations of certain terms used within this disclosure are defined as follows. That is, within this document, "UE" is equivalent to a wireless communication device, "BS" is equivalent to a wireless network device, a next-generation NodeB (gNB), or a TRP, "reference signal (RS)" is equivalent to a CSI-RS, an RS for tracking, or a tracking RS (TRS), "CSI reporting configuration signaling" is equivalent to higher-level signaling, radio resource control (RRC), radio resource management (RRM), radio resource arrangement (RRA), downlink control information (DCI), or a physical downlink control channel (PDCCH), "TDCP" is equivalent to CSI, "time unit" can be a sub-symbol, symbol, slot, sub-frame, frame, or a transmission opportunity, "channel correlation" is equivalent to channel auto-correlation and a channel correlation coefficient, "Doppler spectrum" is defined as a circularly shifted DFT of channel correlation, with the zero-frequency component located at the center of the spectrum, and "Doppler shift" is defined as a frequency corresponding to a point within the Doppler spectrum.

[0025] Embodiment 0: General description.

[0026] The general procedure for a UE to report TDCP is as follows.

[0027] The UE receives periodic RS from the BS, and the length of the RS period is T RS which is a time unit. As illustrated in FIG. 2, the symbol with the RS is shown as the RS symbol. In the example of FIG. 2, T RS is equal to two slots.

[0028] The UE receives CSI reporting configuration signaling from the BS.

[0029] The UE determines TDCP according to the periodic RS and the CSI reporting configuration signaling.

[0030] The UE reports TDCP to the BS according to the CSI reporting configuration signaling.

[0031] Embodiment 1: The UE reports the number of channel correlation amplitudes or the number of channel correlation amplitudes and phases to the BS as TDCP.

[0032] When PhaseReprotConfiguration is set as notConfigured, the UE reports N channel correlation amplitudes to the BS as TDCP. N and PhaseReprotConfiguration are parameters defined in the CSI reporting configuration signaling, and N is an integer greater than or equal to 1.

[0033] The delay {τ} corresponding to the N channel correlation amplitudes is given by the following formula, i.e., {τ} = {T S , 2T S , …, NT S}, where T S is a parameter defined in the CSI reporting configuration signaling, and T S is an integer multiple of the length of the RS period T RS .

[0034] The channel correlation amplitudes are measured through the RS symbols within (N + 1)T S consecutive time units.

[0035] For each delay τ, the corresponding channel correlation amplitude is measured as the average of the measurements obtained through a plurality of pairs of RS symbols with a time symbol interval equal to τ with respect to it.

[0036] The UE should continuously receive the RS during (N + 1)T S consecutive time units.

[0037] When timeRestictionConfiguration is set as notConfigured, timeRestictionConfiguration is a parameter defined in the CSI reporting configuration signaling, and (N + 1)T SThe continuous time unit should be the one closest to the time unit before when the UE is triggered for TDCP reporting.

[0038] When timeRestictionConfiguration is set as Configured, timeRestictionConfiguration is a parameter defined within the CSI reporting configuration signaling, and is (N + 1)T S The continuous time unit should be before the time unit when the UE is triggered for TDCP reporting, while (N + 1)T S The time interval between the last time unit within the continuous time unit and the time unit when the UE is triggered for TDCP reporting is less than D time units, where D is a parameter defined within the CSI reporting configuration signaling, and D is an integer greater than or equal to 1.

[0039] The UE reports the channel correlation amplitudes in ascending order of their corresponding delays.

[0040] The UE quantizes the channel correlation amplitudes and reports the quantized amplitudes to the BS.

[0041] For example, consider the case where PhaseReprotConfiguration = notConfigured, N = 4, T S = 2 slots, timeRestictionConfiguration = Configured, and D = 5 slots. The UE reports the N = 4 amplitudes of the channel correlation with the corresponding delays {τ} = {2 slots, 4 slots, 6 slots, 8 slots}.

[0042] For each delay τ, the corresponding amplitude of the channel correlation has a time symbol interval of (N + 1)T with respect to it SIt is measured as the average of the measurement values obtained by all pairs of symbols equal to τ within 10 consecutive slots. The 10 consecutive slots are selected such that they are the two slots before the slot when the UE is triggered for TDCP reporting.

[0043] Assume that the N = 4 amplitudes of the channel correlation are measured as {0.8, 0.7, 0.5, 0.1}, and 3 bits are used to quantize each amplitude. Then the UE will quantize the amplitudes as {0.875, 0.75, 0.5, 0.125}. Finally, the UE will sequentially report the quantized amplitudes {0.875, 0.75, 0.5, 0.125} to the BS.

[0044] When PhaseReprotConfiguration is set as Configured, the UE reports N amplitudes and M phases of the channel correlation to the BS as TDCP. N, M, and PhaseReprotConfiguration are parameters defined within the CSI reporting configuration signaling. Both N and M are integers greater than or equal to 1, and M ≤ N.

[0045] The delays {τ} corresponding to the N amplitudes of the channel correlation are determined according to the following formula, i.e., {τ} = {T S , 2T S , …, NT S}}, where T S is a parameter defined within the CSI reporting configuration signaling, and T S is an integer multiple of the length of the RS period T RS .

[0046] The delays {τ} corresponding to the M phases of the channel correlation are determined according to the following formula, i.e., {τ} = {T S , 2T S , …, MT S}}.

[0047] The amplitudes and phases of the channel correlation are (N + 1)T SIt is measured through RS symbols within a continuous time unit.

[0048] For each delay τ, the corresponding amplitude or phase of the channel correlation is measured as the average of the measurements obtained by a plurality of pairs of RS symbols for which the time interval between the time symbols is equal to τ.

[0049] The UE is (N + 1)T S During the continuous time unit, the UE should continuously receive the RS.

[0050] When timeRestictionConfiguration is set as notConfigured, timeRestictionConfiguration is a parameter defined within the CSI reporting configuration signaling, and is (N + 1)T S The continuous time unit is selected to be closest to the time unit before the time unit when the UE is triggered for TDCP reporting.

[0051] When timeRestictionConfiguration is set as Configured, timeRestictionConfiguration is a parameter defined within the CSI reporting configuration signaling, and is (N + 1)T S The continuous time unit should be before the time unit when the UE is triggered for TDCP reporting, while (N + 1)T S The time interval between the last time unit within the continuous time unit and the time unit when the UE is triggered for TDCP reporting is less than D time units, where D is a parameter defined within the CSI reporting configuration signaling, and D is an integer greater than or equal to 1.

[0052] The UE first reports the amplitude of the channel correlation and then, subsequently, reports the phase of the channel correlation.

[0053] The UE reports the amplitude and phase of the channel correlation in ascending order of their corresponding delays.

[0054] The UE quantizes the amplitude and phase of the channel correlation and reports the quantized amplitude and phase to the BS.

[0055] For example, consider the case where PhaseReprotConfiguration = notConfigured, N = 4, M = 2, T S = 2 slots, timeRestictionConfiguration = Configured, and D = 5 slots. The UE reports N = 4 amplitudes of the channel correlation with the corresponding delays {τ} = {2 slots, 4 slots, 6 slots, 8 slots}, and M = 2 phases of the channel correlation with the corresponding delays {τ} = {2 slots, 4 slots}.

[0056] For each delay τ, the corresponding amplitude or phase of the channel correlation is measured as the average of the measurement values obtained by all pairs of symbols for which the inter-symbol interval in time with respect to it is equal to τ within (N + 1)T S = 10 consecutive slots. The 10 consecutive slots are selected such that they are the two slots before the slot when the UE is triggered for TDCP reporting.

[0057] The N = 4 amplitudes of the channel correlation are measured as {0.8, 0.7, 0.5, 0.1}, and the M = 2 phases of the channel correlation are

Chemical formula

Chemical formula

Chemical formula

[0058] Embodiment 2: The UE reports the number of real parts of the channel correlation to the BS as TDCP.

[0059] The UE reports N real parts of the channel correlation to the BS as TDCP, where N is a parameter defined in the CSI reporting configuration signaling and N is an integer greater than or equal to 1.

[0060] The delay {τ} corresponding to the N real parts of the channel correlation is given by the following formula, i.e., {τ} = {T S , 2T S , …, NT S}, where T S is a parameter defined in the CSI reporting configuration signaling and T S is an integer multiple of the length of the RS period T RS .

[0061] The real part of the channel correlation is measured through RS symbols within (N + 1)T S consecutive time units.

[0062] For each delay τ, the corresponding real part of the channel correlation is measured as the average of the measurements obtained by a plurality of pairs of RS symbols with a time symbol interval equal to τ with respect to it.

[0063] The UE should continuously receive the RS within (N + 1)T S consecutive time units.

[0064] When timeRestictionConfiguration is set as notConfigured, timeRestictionConfiguration is a parameter defined in the CSI reporting configuration signaling and is (N + 1)T SThe continuous time unit is selected to be closest to the time unit before the time unit when the UE is triggered for TDCP reporting.

[0065] When timeRestictionConfiguration is set as Configured, timeRestictionConfiguration is a parameter defined within the CSI reporting configuration signaling, and is (N + 1)T S The continuous time unit should be before the time unit when the UE is triggered for TDCP reporting, while (N + 1)T S The time interval between the last time unit within the continuous time unit and the time unit when the UE is triggered for TDCP reporting is less than D time units, where D is a parameter defined within the CSI reporting configuration signaling and D is an integer greater than or equal to 1.

[0066] The UE reports the real part of the channel correlation in ascending order of their corresponding delays.

[0067] The UE quantizes the real part of the channel correlation and reports the quantized real part to the BS.

[0068] For example, N = 4, T S Considering the case where = 2 slots, timeRestictionConfiguration = Configured, and D = 5 slots, the UE reports the N = 4 real parts of the channel correlation with the corresponding delays {τ} = {2 slots, 4 slots, 6 slots, 8 slots}.

[0069] For each delay τ, the corresponding real part of the channel correlation is measured as the average of the measurements obtained by all pairs of symbols where the time symbol interval with respect to it is (N + 1)T S = 10 equal to τ within 10 consecutive slots. The 10 consecutive slots are selected to be 2 slots before the slot when the UE is triggered for TDCP reporting.

[0070] Assume that the four real parts of the channel correlation are measured as {0.8, 0.7, 0.5, 0.1}, and 3 bits are used to quantize each real part. Then the UE will quantize the real parts as {0.875, 0.75, 0.5, 0.125} and finally report the quantized real parts to the BS.

[0071] Embodiment 3: The UE reports to the BS the number of differential Doppler shifts relative to the reference Doppler shift as TDCP.

[0072] The UE reports K - 1 differential Doppler shifts relative to the reference Doppler shift to the BS as TDCP, where K is a parameter defined in the CSI reporting configuration signaling and K is an integer greater than or equal to 2.

[0073] The reference Doppler shift is selected as the Doppler shift corresponding to the maximum point in the Doppler spectrum.

[0074] The differential Doppler shift is calculated according to the following formula, that is, Δf d,k =f d,k -f d,ref , for k = 2, 3,... K, where f d,k is the Doppler shift corresponding to the k-th maximum point in the Doppler spectrum, and f d,ref is the reference Doppler shift.

[0075] The UE calculates the Doppler spectrum through the RS within L consecutive RS periods, where L is a parameter defined in the CSI reporting configuration signaling and L is an integer greater than or equal to 2.

[0076] When timeRestictionConfiguration is set to notConfigured, the L consecutive RS periods are selected to be closest to the time unit before when the UE is triggered for TDCP reporting, and timeRestictionConfiguration is a parameter defined within the CSI reporting configuration signaling.

[0077] When timeRestrictionConfiguration is set to Configured, the L consecutive RS periods should be before the time unit when the UE is triggered for TDCP reporting, and the time interval between the last time unit within the L consecutive RS periods and the time unit when the UE is triggered for TDCP reporting is less than D time units. D is a parameter defined within the CSI reporting configuration signaling, and D is an integer greater than or equal to 1.

[0078] The UE reports the differential Doppler shift in frequency units defined as unit = 1 / (L·O·T RS ), where O is a parameter defined within the CSI reporting configuration signaling, and O is a parameter greater than or equal to 1.

[0079] The UE reports the differential Doppler shift Δf d,k in ascending order of index k, where k = 2, 3, … K.

[0080] For example, considering the case where K = 4, L = 16, O = 1, D = 5, T RS = 2 slots, and timeRestictionConfiguration = Configured, the UE calculates the Doppler spectrum through the RS symbols within the L = 16 RS periods.

[0081] The L = 16 RS period is before the slot when the UE is triggered for TDCP reporting, and the time interval between the last slot within the L = 16 RS period and the slot when the UE is triggered for TDCP reporting is two slots.

[0082] As shown in Figure 3, the first to fourth maximum points are shown within the calculated Doppler spectrum. The reference Doppler shift is selected as the Doppler shift corresponding to the first maximum point. The differential Doppler shifts are calculated as -125 Hz, -62.5 Hz, and 187.5 Hz. The frequency unit is calculated as 62.5 Hz. The UE reports the differential Doppler shifts as -2, -1, and 3, sequentially, in frequency units of 62.5 Hz.

[0083] Embodiment 4: The UE reports Doppler spread to the BS as TDCP.

[0084] The UE reports to the BS as TDCP the Doppler shift, that is, the difference between the Doppler shifts corresponding to two points within the Doppler spectrum.

[0085] The UE calculates the Doppler spectrum through the RS within L consecutive RS periods, where L is a parameter defined in the CSI reporting configuration signaling, and L is an integer greater than or equal to 2.

[0086] When timeRestictionConfiguration is set to notConfigured, the L consecutive RS periods are selected to be closest to the time unit before the UE is triggered for TDCP reporting, and timeRestictionConfiguration is a parameter defined in the CSI reporting configuration signaling.

[0087] When the timeRestrictionConfiguration is set as Configured, the L consecutive RS periods should be before the time unit when the UE is triggered for TDCP reporting, and the time interval between the last time unit within the L consecutive RS periods and the time unit when the UE is triggered for TDCP reporting is less than D time units. D is a parameter defined in the CSI reporting configuration signaling, and D is an integer greater than or equal to 1.

[0088] Two points in the Doppler spectrum are selected according to the following steps.

[0089] Step 1: The UE sorts the amplitudes of the Doppler spectrum {|C(n)|} in descending order. f d,i and n i respectively indicate the Doppler shift and the DFT index corresponding to the i-th maximum point in the Doppler spectrum.

[0090] Step 2: The UE calculates the sum of the amplitudes of the first I maximum points in the Doppler spectrum, that is,

Chemical formula

Chemical formula

[0091] Step 3: The UE finds the minimum and maximum DFT indices n

Chemical formula

[0092] The UE reports Doppler spread in frequency units, defined as unit = 1 / (L·O·T RS ), where O is a parameter defined within the CSI reporting configuration signaling, and O is a parameter greater than or equal to 1.

[0093] For example, considering L = 16, O = 1, D = 5, T RS = 2 slots, and timeRestictionConfiguration = Configured, the UE calculates the Doppler spectrum through the RS symbols within the L = 16 RS period.

[0094] The L = 16 RS period is before the slot when the UE is triggered for TDCP reporting, and the time interval between the last slot within the L = 16 RS period and the slot when the UE is triggered for TDCP reporting is 2 slots.

[0095] As shown in Figure 3, the 1st - 4th maximum points are shown within the calculated Doppler spectrum. The 2nd and 4th maximum points are selected to calculate the Doppler spread. The Doppler spread is calculated as 312.5 Hz. The frequency unit is calculated as 62.5 Hz. Finally, the UE reports the Doppler spread in frequency units as 5.

[0096] Therefore, some preferred embodiments may use the following solutions.

[0097] 1. A method of wireless communication as disclosed in FIG. 4, comprising: receiving, by a wireless communication device, a reference signal (RS) (402); receiving, by the wireless communication device, channel state information (CSI) report configuration signaling (404); determining, by the wireless communication device, according to the RS and the CSI report configuration signaling (406); and transmitting, by the wireless communication device, to a network device, CSI according to the CSI report configuration signaling (408). Additional details and examples are discussed with respect to Embodiments 0 and 1 and FIGS. 1 and 2.

[0098] 2. The RS further includes at least one of a CSI-RS or a tracking RS (TRS), and the length of the TRS period is represented as T RS and the unit of T RS is a time unit, the method according to Solution 1.

[0099] 3. The CSI report configuration signaling includes at least one of a parameter group, i.e., a first parameter group, a second parameter group, a third parameter group, or a fourth parameter group, the method according to Solution 1.

[0100] 4. The first parameter group includes all of a parameter PhaseReprotConfiguration that can be set to Configured or notConfigured, a parameter TimeRestrictionConfiguration that can be set to Configured or notConfigured, a parameter N that is an integer greater than or equal to 1, a parameter M (where M is less than or equal to N) that is an integer greater than or equal to 1, a parameter T RS that is an integer multiple of T S and a parameter D that is an integer greater than or equal to 1, the method according to Solution 3.

[0101] 5. The second parameter group includes the parameter TimeRestrictionConfiguration, which can be set to Configured or notConfigured, the parameter N, which is an integer greater than or equal to 1, and the parameter T, which is an integer multiple of T RS and the parameter T, which is an integer multiple of T S and all of the parameter D, which is an integer greater than or equal to 1, as described in Solution 3.

[0102] 6. The third parameter group includes the parameter TimeRestrictionConfiguration, which can be set to Configured or notConfigured, the parameter K, which is an integer greater than or equal to 2, the parameter L, which is an integer greater than or equal to 2, the parameter O, which is an integer greater than or equal to 1, and the parameter D, which is an integer greater than or equal to 1, as described in Solution 3.

[0103] 7. The fourth parameter group includes the parameter TimeRestrictionConfiguration, which can be set to Configured or notConfigured, the parameter L, which is an integer greater than or equal to 2, the parameter O, which is an integer greater than or equal to 1, and the parameter D, which is an integer greater than or equal to 1, as described in Solution 3.

[0104] 8. The CSI determined by the wireless communication device according to the CSI report configuration signaling includes at least one of the time domain property or the Doppler domain property, as described in Solution 1.

[0105] 9. The time-domain property includes at least one of the amplitude of the channel correlation (PhaseReprotConfiguration in the first parameter group is set to notConfigured), the amplitude and phase of the channel correlation (the parameter PhaseReprotConfiguration in the first parameter group is set to Configured), and the real part of the channel correlation, according to the method of Solution 8.

[0106] 10. The wireless communication device determines the number of amplitudes of the channel correlation, and the number of amplitudes is associated with the parameter N in the first group, according to the method of Solution 9.

[0107] 11. The wireless communication device determines the number of amplitudes and phases of the channel correlation, the number of amplitudes is associated with the parameter N in the first group, and the number of phases is associated with the parameter M in the first group, according to the method of Solution 9.

[0108] 12. The delay {τ} corresponds to N amplitudes of the channel correlation according to the following formula, i.e., {τ} = {T S , 2T S , …, NT S}, and the parameter T S is part of the first parameter group, according to the methods of Solutions 10 and 11.

[0109] 13. The delay {τ} corresponds to M phases of the channel correlation according to the following formula, i.e., {τ} = {T S , 2T S , …, MT S}, and the parameter T S is part of the first parameter group, according to the method of Solution 11.

[0110] 14. The wireless communication device determines the number of amplitudes and phases of the channel correlation according to a pair of RS symbols within (N + 1)T S consecutive time units, and the parameters N and T Sis part of the first parameter group and involves the wireless communication device determining the corresponding amplitude or amplitude and phase of channel correlation every delay τ. The wireless communication device further determines (N + 1)T S A method according to Solutions 12 and 13, which involves averaging measurements obtained by a plurality of pairs of RS symbols within a continuous time unit, where each pair of RS symbols satisfies that the symbol interval is equal to the delay τ.

[0111] 15. The wireless communication device, according to the parameter TimeRestrictionConfiguration and D of the first parameter group, and the following rules, namely, the first rule, where the wireless communication device determines (N + 1)T S The first rule of continuously receiving periodic RS during a continuous time unit, and the second rule, where when the parameter TimeRestrictionConfiguration is set to notConfigured, based on satisfying the first rule, the time position is (N + 1)T S The second rule where the last time unit of the continuous time unit is determined to be closest to the time unit before the time unit when the wireless communication device is triggered for time domain correlation property (TDCP) reporting, and the third rule, where when the parameter TimeRestrictionConfiguration is set to Configured, based on satisfying the first rule, the time position is (N + 1)T S The last time unit of the continuous time unit is before the time unit when the wireless communication device is triggered for TDCP reporting, and further, (N + 1)T S The third rule where the time interval between the last time unit of the continuous time unit and the time unit when the wireless communication device is triggered for TDCP reporting is determined to be less than D time units, and according to this, (N + 1)T S A method according to Solution 14 for determining the time position of a continuous time unit.

[0112] 16. The wireless communication device determines the number of real parts of the channel correlation, and the number of real parts is associated with the parameter N in the second group, according to the method described in solution 9.

[0113] 17. The delay {τ} corresponds to N real parts of the channel correlation according to the following formula, i.e., {τ} = {T S , 2T S , …, NT S}, and the parameter T S is part of the second parameter group, according to the method described in solution 16.

[0114] 18. The wireless communication device determines the number of real parts of the channel correlation according to a pair of RS symbols for (N + 1)T S consecutive time units, and the parameters N and T S are part of the second parameter group, and the wireless communication device includes determining the corresponding real part of the channel correlation for each delay τ, and the wireless communication device further S averages the measurement values obtained by a plurality of pairs of RS symbols within (N + 1)T

[0115] consecutive time units, and each pair of RS symbols satisfies that the symbol interval is equal to the delay τ, according to the method described in solution 17. S S 19. The wireless communication device, according to the parameter TimeRestrictionConfiguration and D in the second parameter group, and according to the following rules, i.e., the first rule, the wireless communication device continuously receives periodic RS during (N + 1)T S consecutive time units, and the second rule, when the parameter TimeRestrictionConfiguration is set to notConfigured, based on satisfying the first rule, the time position is (N + 1)T SThe last time unit of the continuous time units is determined to be closest to the time unit before the time unit when the wireless communication device is triggered for time domain correlation property (TDCP) reporting, and a second rule and a third rule, where when the parameter TimeRestrictionConfiguration is set to Configured, based on satisfying the first rule, the time position is (N + 1)T S The last time unit of the continuous time units is before the time unit when the wireless communication device is triggered for TDCP reporting, and further, (N + 1)T S According to the third rule, which determines that the time interval between the last time unit of the continuous time units and the time unit when the wireless communication device is triggered for TDCP reporting is less than D time units, (N + 1)T S The method according to Solution 18 for determining the time position of the continuous time units.

[0116] 20. The wireless communication device transmits the amplitude, phase, and real part of the channel correlation in ascending order of the corresponding delay. When the parameter PhaseReprotConfiguration of the first parameter group is set to Configured, the wireless communication device transmits in the order of the amplitude and phase of the channel correlation. The method according to Solutions 15 and 19.

[0117] 21. The Doppler domain property includes at least one of the differential Doppler shift or Doppler spread with respect to the reference Doppler shift. The method according to Solution 8.

[0118] 22. The wireless communication device determines the number of differential Doppler shifts, and the number of differential Doppler shifts is associated with the parameter K - 1 within the third group. The method according to Solution 21.

[0119] 23. The wireless communication device uses the following formula, namely, Δf d,k = f d,k - f d,ref, determine the differential Doppler shift according to k = 2, 3, … K, where f d,k is the Doppler shift corresponding to the k-th maximum point in the Doppler spectrum, and f d,ref is the reference Doppler shift, the method according to Solution 22.

[0120] 24. The wireless communication device determines that the reference Doppler shift to be the Doppler shift corresponds to the maximum point in the Doppler spectrum, the method according to Solution 23.

[0121] 25. The wireless communication device determines the Doppler spectrum by RS symbols within L consecutive RS periods, where the parameter L is part of a third parameter group, the method according to Solution 24.

[0122] 26. The wireless communication device determines the temporal position of L consecutive RS periods according to the parameter TimeRestrictionConfiguration and D of the third parameter group. When the parameter TimeRestrictionConfiguration is set to notConfigured, the temporal position is determined such that the last time unit within the L consecutive RS periods is closest to the time unit before the wireless communication device is triggered for CSI reporting. When the parameter TimeRestrictionConfiguration is set to Configured, the temporal position is such that the last time unit within the L consecutive RS periods is before the time unit when the wireless communication device is triggered for CSI reporting, and further, the time interval between the last time unit within the L RS periods and the time unit when the wireless communication device is triggered for CSI reporting is determined to be less than D time units, the method according to Solution 25.

[0123] 27. The wireless communication device uses the following formula, i.e., unit = 1 / (L·O·T RS) The method according to solution 26, which transmits the number of differential Doppler shifts in a unit determined according to, where L and O are part of a third parameter group.

[0124] 28. The wireless communication device transmits differential Doppler shifts Δf in ascending order of index k, where k = 2, 3,... K, according to the method described in solution 27. d,k The method according to solution 27, which transmits differential Doppler shifts Δf in ascending order of index k, where k = 2, 3,... K.

[0125] 29. The wireless communication device determines Doppler spread as the difference between Doppler shifts corresponding to two points in the Doppler spectrum, according to the method described in solution 21.

[0126] 30. The wireless communication device determines the Doppler spectrum using RS symbols within L consecutive RS periods, where parameter L is part of a fourth parameter group, according to the method described in solution 29.

[0127] 31. The wireless communication device determines the temporal position of L consecutive RS periods according to parameter TimeRestrictionConfiguration and D of the fourth parameter group. When parameter TimeRestrictionConfiguration is set to notConfigured, the temporal position is determined such that the last time unit within the L consecutive RS periods is closest to the time unit before the wireless communication device is triggered for CSI reporting. When parameter TimeRestrictionConfiguration is set to Configured, the temporal position is such that the last time unit within the L consecutive RS periods is before the time unit when the wireless communication device is triggered for CSI reporting, and further, the temporal interval between the last time unit within the L RS periods and the time unit when the wireless communication device is triggered for CSI reporting is determined to be less than D time units, according to the method described in solution 30.

[0128] 32. The wireless communication device uses the following formula, i.e., unit = 1 / (L·O·TRS ) According to, in a unit, transmitting the number of differential Doppler shifts, and L and O are part of a fourth parameter group, the method according to solution 31.

[0129] 33. A method of wireless communication as disclosed in FIG. 5, comprising: transmitting a reference signal (RS) to a wireless communication device (502); transmitting channel state information (CSI) reporting configuration signaling to the wireless communication device (504); determining by the wireless communication device according to the RS and the CSI reporting configuration signaling (506); and receiving, from the wireless communication device by a network device, the CSI according to the CSI reporting configuration signaling (508). Additional details and examples are discussed with respect to embodiments 0 and 1 and FIGS. 1 and 2 and solutions 2-32.

[0130] 34. A communication device comprising a processor configured to implement the method according to any one or more of solutions 1-33.

[0131] 35. A computer-readable medium having code stored thereon, which when executed causes a processor to implement the method according to any one or more of solutions 1-33.

[0132] FIG. 6 shows an example of a wireless communication system (e.g., a Long-Term Evolution (LTE), 5G, or NR cellular network) including BS120 and one or more user devices (wireless communication devices) 111, 112, 113. In some embodiments, the uplink transmissions (131, 132, 133) can include uplink control information (UCI), upper layer signaling (e.g., wireless communication device assistance information or wireless communication device capabilities), or uplink information. In some embodiments, the downlink transmissions (141, 142, 143) can include DCI or upper layer signaling or downlink information. The wireless communication devices can be, for example, smartphones, tablets, mobile computers, machine-to-machine (M2M) devices, terminals, mobile devices, Internet of Things (IoT) devices, etc.

[0133] FIG. 7 is a block diagram representation of a portion of an apparatus according to some embodiments of the disclosed technology. An apparatus 205, such as a network device or a base station or a wireless device (i.e., a wireless communication device), can include a processor electronics 210, such as a microprocessor, that implements one or more of the techniques presented herein. The apparatus 205 can include a transceiver electronics 215 for transmitting and / or receiving wireless signals via one or more communication interfaces, such as an antenna 220. The apparatus 205 can include other communication interfaces for transmitting and receiving data. The apparatus 205 can include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, the processor electronics 210 can include at least a portion of the transceiver electronics 215. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using the apparatus 205.

[0134] Some of the embodiments described in this specification are described in the general context of a method or process, which, in one embodiment, may be implemented by a computer program product embodied in a computer-readable medium including computer-executable instructions such as program code, executed by a computer in a networked environment. The computer-readable medium may include removable and non-removable storage devices including, by way of example and not limitation, read only memory (ROM), random access memory (RAM), compact disc (CD), digital versatile disc (DVD), etc. Thus, the computer-readable medium can include a non-transitory storage medium. Generally, program modules may 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 the steps of the methods disclosed herein. A particular sequence of such executable instructions or associated data structures represents an example of corresponding acts for implementing the functions described in such steps or processes.

[0135] Some of the disclosed embodiments can be implemented as devices or modules that use hardware circuits, software, or combinations thereof. For example, a hardware circuit implementation can include discrete analog and / or digital components that are integrated, for example, as part of a printed circuit board. Alternatively, or in addition, the disclosed components or modules can be implemented as application specific integrated circuits (ASICs) and / or as field programmable gate array (FPGA) devices. Some implementations can, in addition, or alternatively, include a digital signal processor (DSP), which is a special microprocessor with an architecture optimized for the requirements of digital signal processing operations associated with the functionality disclosed herein. Similarly, the various components or sub-components within each module may be implemented in software, hardware, or firmware. Connectivity between modules and / or components within a module can be provided using any one of connectivity methods and media known in the art, including, but not limited to, communication via the Internet, wired, or wireless networks using appropriate protocols.

[0136] This book contains many details, but these should be construed as descriptions of features specific to particular embodiments rather than as limitations on the scope of the claimed invention or what may be claimed. Certain features described in the context of separate embodiments in this book may also be implemented in a single embodiment, in combination. Conversely, the various features described in the context of a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. Also, features that are described above as acting in a certain combination and may further be claimed as such may, in some cases, be deleted from the claimed combination, and the claimed combination may be directed to a sub-combination or a variation of a sub-combination. Similarly, operations are depicted in the drawings in a particular order, but this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.

[0137] Only some implementations and examples are described, and other implementations, enhancements, and variations can also be made based on what is described and illustrated in this book.

Claims

1. A method of wireless communication, comprising: receiving, by a wireless communication device, a reference signal (RS); receiving, by the wireless communication device, channel state information (CSI) reporting configuration signaling; determining, by the wireless communication device, according to the RS and the CSI reporting configuration signaling; transmitting, by the wireless communication device, CSI to a network device according to the CSI reporting configuration signaling .

2. The RS further includes at least one of: CSI-RS, or tracking RS (TRS), and the method according to claim 1. The length of the TRS period is T ＲＳ which is expressed as T ＲＳ The unit of

3. The CSI reporting configuration signaling includes at least one of a parameter group, namely: a first parameter group, a second parameter group, a third parameter group, or a fourth parameter group, and the method according to claim 1.

4. The first parameter group includes: a parameter PhaseReportConfiguration that can be set to Configured or notConfigured; a parameter TimeRestrictionConfiguration that can be set to Configured or notConfigured; a parameter N that is an integer greater than or equal to 1; a parameter M that is an integer greater than or equal to 1, where the M is less than or equal to the N; and a parameter D that is an integer greater than or equal to 1 T ＲＳ a parameter T that is an integer multiple of Ｓ and , and the method according to claim 3.

5. The second parameter group includes: a parameter TimeRestrictionConfiguration that can be set to Configured or notConfigured; a parameter N that is an integer greater than or equal to 1; and a parameter D that is an integer greater than or equal to 1 T ＲＳ A parameter T that is an integer multiple of Ｓ and , and the method according to claim 3.

6. The third parameter group includes: a parameter TimeRestrictionConfiguration that can be set to Configured or notConfigured; a parameter K that is an integer greater than or equal to 2; a parameter L that is an integer greater than or equal to 2 ​ A parameter O which is an integer greater than or equal to 1, and A parameter D which is an integer greater than or equal to 1 The method according to claim 3, including all of them.

7. The fourth parameter group includes A parameter TimeRestrictionConfiguration that can be set to Configured or notConfigured, A parameter L which is an integer greater than or equal to 2, A parameter O which is an integer greater than or equal to 1, A parameter D which is an integer greater than or equal to 1 The method according to claim 3, including all of them.

8. The CSI determined by the wireless communication device according to the CSI report configuration signaling is A time domain property, or A Doppler domain property The method according to claim 1, including at least one of them.

9. The time domain property is The amplitude of channel correlation, and The amplitude of channel correlation where the PhaseReprotConfiguration in the first parameter group is set to notConfigured, and The amplitude and phase of channel correlation, and The amplitude and phase of channel correlation where the parameter PhaseReprotConfiguration in the first parameter group is set to Configured, and The real part of channel correlation The method according to claim 8, including at least one of them.

10. The wireless communication device determines the number of the amplitudes of the channel correlation, The number of the amplitudes is associated with the parameter N in the first group, The method according to claim 9.

11. The wireless communication device determines the number of the amplitudes and phases of the channel correlation, The number of the amplitudes is associated with the parameter N in the first group, and the number of the phases is associated with the parameter M in the first group, The method according to claim 9.

12. The delay {τ} corresponds to the N amplitudes of the channel correlation according to the following formula, that is, {τ} = {T Ｓ , 2T Ｓ , …, NT Ｓ} The methods according to claims 10 and 11. Parameter T Ｓ is part of the first parameter group

13. The delay {τ} corresponds to the M phases of the channel correlation according to the following formula, that is, The method according to claim 11. {τ} = {T Ｓ , 2T Ｓ , …, MT Ｓ}

14. Parameter T Ｓ is a part of the first parameter group, By the wireless communication device, for each delay τ, the corresponding amplitude or amplitude and phase of the channel correlation are determined ​ The wireless communication device is (N + 1)T Ｓ determine the number of the amplitudes and phases of the channel correlation according to a pair of RS symbols within a continuous time unit, Parameters N and T Ｓ are part of the first parameter group, ​ The wireless communication device further includes the (N + 1)T Ｓ averaging measurement values obtained by a plurality of pairs of RS symbols within a continuous time unit, Each pair of RS symbols satisfies that the symbol - to - symbol interval is equal to the delay τ. The method according to claims 12 and 13. **Claim 15** The wireless communication device is in accordance with the parameter TimeRestrictionConfiguration and D of the first parameter group, and the following rules, namely, The first rule, wherein the wireless communication device continuously receives periodic RS during the (N + 1)T Ｓ The first rule of continuously receiving periodic RS during consecutive time units The second rule, when the parameter TimeRestrictionConfiguration is set to notConfigured, based on satisfying the first rule, the temporal position is the (N + 1)T Ｓ A second rule in which the last time unit of a consecutive time unit is determined to be closest to the time unit before the time unit when the wireless communication device is triggered for CSI reporting The third rule, when the parameter TimeRestrictionConfiguration is set to Configured, based on satisfying the first rule, the temporal position is the (N + 1)T Ｓ The last time unit of the continuous time units is before the time unit when the wireless communication device is triggered for a TDCP report, and further, the (N + 1)T Ｓ A third rule, determined such that the time interval between the last time unit of the continuous time units and the time unit when the wireless communication device is triggered for a CSI report is less than D time units According to the above, the (N + 1)T Ｓ The method according to claim 14, which determines the temporal position in units of consecutive time intervals. **Claim 16** The wireless communication device determines the number of real - valued parts of the channel correlation. The number of real - valued parts is associated with the parameter N within the second group. The method according to claim 9. **Claim 17** The delay {τ} corresponds to N real - valued parts of the channel correlation according to the following formula, namely, {τ} = {T Ｓ , 2T Ｓ , …, NT Ｓ} Parameter T Ｓ is part of the second parameter group, The method according to claim 16. **Claim 18** The wireless communication device (N + 1)T Ｓ Determining the number of real parts of the channel correlation according to a pair of RS symbols for continuous time units, Parameters N and T Ｓ is part of the second parameter group, and determines the corresponding real - valued part of the channel correlation for each delay τ by the wireless communication device, The wireless communication device further includes the (N + 1)T Ｓ averaging measurement values obtained by a plurality of pairs of RS symbols within a continuous time unit, where each pair of RS symbols satisfies that the symbol - to - symbol interval is equal to the delay τ, The method according to claim 17, which performs the above. **Claim 19** The wireless communication device is in accordance with the parameter TimeRestrictionConfiguration and D of the second parameter group, and the following rules, namely, The first rule, wherein the wireless communication device continuously receives periodic RS during the (N + 1)T Ｓ The first rule of continuously receiving periodic RS during consecutive time units The second rule, when the parameter TimeRestrictionConfiguration is set to notConfigured, based on satisfying the first rule, the temporal position is the (N + 1)T Ｓ A second rule in which the last time unit of a continuous time unit is determined to be closest to the time unit before the time unit when the wireless communication device is triggered for CSI reporting The third rule, when the parameter TimeRestrictionConfiguration is set to Configured, based on satisfying the first rule, the temporal position is the (N + 1)T Ｓ The last time unit of the consecutive time units is before the time unit when the wireless communication device is triggered for CSI reporting, and further, the (N + 1)T Ｓ A third rule determined such that the time interval between the last time unit of the consecutive time units and the time unit when the wireless communication device is triggered for TDCP reporting is less than D time units According to the above, the (N + 1)T Ｓ The method according to claim 18, which determines the temporal position in continuous time units. **Claim 20** The wireless communication device transmits the amplitude, phase, and real - valued part of the channel correlation in ascending order of the corresponding delay, When the parameter PhaseReportConfiguration of the first parameter group is set to Configured, the wireless communication device transmits in the order of the amplitude and phase of the channel correlation. The method according to claims 15 and 19. **Claim 21** The Doppler domain property is at least one of the differential Doppler shift with respect to the reference Doppler shift, or Doppler spread The method according to claim 8. **Claim 22** The wireless communication device determines the number of differential Doppler shifts. The number of differential Doppler shifts is associated with the parameter K - 1 within the third group. The method according to claim 21. **Claim 23** The wireless communication device determines the differential Doppler shift according to the following formula, namely, Δf ｄ，ｋ = f ｄ，ｋ − f ｄ，ｒｅｆ where k = 2, 3, … K f ｄ，ｋ is the Doppler shift corresponding to the k-th maximum point in the Doppler spectrum, and f ｄ，ｒｅｆ is the reference Doppler shift. The method according to claim 22. **Claim 24** The method according to claim 23, wherein the wireless communication device determines that the reference Doppler shift to be Doppler shifted corresponds to a maximum point within the Doppler spectrum. **Claim 25** The wireless communication device determines the Doppler spectrum by means of RS symbols within L consecutive RS periods, where the parameter L is part of the third parameter group, The method according to claim 24. **Claim 26** The wireless communication device determines the temporal position of the L consecutive RS periods according to the parameter TimeRestrictionConfiguration and D of the third parameter group, when the parameter TimeRestrictionConfiguration is set to notConfigured, the temporal position is determined such that the last time unit within the L consecutive RS periods is closest to the time unit when the wireless communication device is triggered for CSI reporting, when the parameter TimeRestrictionConfiguration is set to Configured, the temporal position is such that the last time unit within the L consecutive RS periods is before the time unit when the wireless communication device is triggered for CSI reporting, and further, the temporal interval between the last time unit within the L RS periods and the time unit when the wireless communication device is triggered for CSI reporting is determined to be less than D time units. The method according to claim 25. **Claim 27** The wireless communication device transmits the number of differential Doppler shifts in units determined according to the following formula, i.e., Unit = 1 / (L·O·T ＲＳ ) where L and O are part of the third parameter group, The method according to claim 26. **Claim 28** **Claim 29** The wireless communication device transmits, in ascending order of index k, the differential Doppler shift Δf ｄ，ｋ , where k = 2, 3, … K, according to the method of claim 27. The method according to claim 21, wherein the wireless communication device determines the Doppler spread as the difference between Doppler shifts corresponding to two points within the Doppler spectrum. **Claim 30** The wireless communication device determines the Doppler spectrum by means of RS symbols within L consecutive RS periods, where the parameter L is part of the fourth parameter group, The method according to claim 29. **Claim 31** ​ The wireless communication device determines the temporal positions of the L consecutive RS periods according to the parameter TimeRestrictionConfiguration and D of the fourth parameter group, when the parameter TimeRestrictionConfiguration is set to notConfigured, the temporal positions are determined such that the last time unit within the L consecutive RS periods is closest to the time unit before the time when the wireless communication device is triggered for CSI reporting, when the parameter TimeRestrictionConfiguration is set to Configured, the temporal positions are determined such that the last time unit within the L consecutive RS periods is before the time unit when the wireless communication device is triggered for CSI reporting, and further, the time interval between the last time unit within the L RS periods and the time unit when the wireless communication device is triggered for CSI reporting is determined to be less than D time units, The method according to claim 30.

32. The wireless communication device transmits the number of differential Doppler shifts in units determined according to the following formula, that is, Unit = 1 / (L·O·T ＲＳ ) L and O are part of the fourth parameter group, The method according to claim 31.

33. A method of wireless communication, comprising: transmitting a reference signal (RS) to a wireless communication device; transmitting channel state information (CSI) reporting configuration signaling to the wireless communication device; determining by the wireless communication device according to the RS and the CSI reporting configuration signaling; receiving CSI from the wireless communication device by a network device according to the CSI reporting configuration signaling. A communication device comprising a processor configured to implement the method according to any one or more of claims 1 - 33.

34. A computer-readable medium having code stored thereon, which when executed causes a processor to implement the method according to any one or more of claims 1 - 33.

35. ​ ​

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