WO2020063478A1 - 由用户设备执行的方法以及用户设备 - Google Patents
由用户设备执行的方法以及用户设备 Download PDFInfo
- Publication number
- WO2020063478A1 WO2020063478A1 PCT/CN2019/107027 CN2019107027W WO2020063478A1 WO 2020063478 A1 WO2020063478 A1 WO 2020063478A1 CN 2019107027 W CN2019107027 W CN 2019107027W WO 2020063478 A1 WO2020063478 A1 WO 2020063478A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- parameter
- configuration
- prach
- subcarrier interval
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Definitions
- the present invention relates to the field of wireless communication technologies, and in particular, to a method performed by a user equipment, a method performed by a base station, and a corresponding user equipment.
- Non-Patent Document 1 a new research project on 5G technology standards (see Non-Patent Document 1) was approved at the 3rd Plenary Meeting of 3GPP (3rd Generation Partnership Project) RAN # 71.
- the purpose of this research project is to develop a new wireless (New Radio: NR) access technology to meet all application scenarios, requirements and deployment environments of 5G.
- NR mainly has three application scenarios: enhanced mobile broadband communication (Enhanced Mobile Broadband: eMBB), large-scale machine type communication (massage Machine Type Communication: mMTC), and ultra-reliable low-latency communication (URLLC) .
- eMBB enhanced mobile broadband communication
- mMTC massive Machine Type Communication
- URLLC ultra-reliable low-latency communication
- the waveform supported by 5G in the downlink direction is CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing, cyclic prefix orthogonal frequency division multiplexing).
- the waveforms supported in the uplink direction include CP-OFDM and DFT-s-OFDM (Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing (Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing).
- CP-OFDM performs a operation called "transform precoding" after the layer mapping operation, while the former does not perform this operating.
- the key parameters of CP-OFDM and DFT-s-OFDM are the subcarrier spacing and cyclic prefix length.
- a given waveform such as CP-OFDM, or DFT-s-OFDM
- multiple parameter sets (numerology) are supported in a cell. Unless otherwise specified, it refers to the subcarrier interval; sometimes (Refers to subcarrier spacing and cyclic prefix length).
- the waveform parameter set supported by 5G is shown in Table 1, which defines two types of cyclic prefixes, "normal" and "extended”.
- ⁇ ⁇ f 2 ⁇ ⁇ 15 [kHz] Cyclic prefix 0 15 Normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal
- Each waveform parameter set ⁇ (configured by the high-level parameter subcarrierSpacing) defines a resource grid (also referred to as a subcarrier-specific carrier, SCS-specific carrier), which includes in the frequency domain Subcarriers (i.e.
- each resource block contains Subcarriers) in the time domain OFDM symbols (that is, the number of OFDM symbols in a subframe, the specific value is related to ⁇ ), where Refers to the number of subcarriers in a resource block (resource block, RB, which can be numbered with a common resource block or a physical resource block, etc.), The lowest numbered common resource block (CRB) of the resource grid Configured by high-level parameter offsetToCarrier, the number of frequency domain resource blocks Configured by the high-level parameter carrierBandwidth. among them,
- the center frequency of subcarrier 0 of common resource block 0 points to the same position in the frequency domain. This position is also called "point A”.
- All subcarrier interval configurations defined in a carrier and their corresponding resource grids can be configured by the parameter scs-SpecificCarrierList.
- Each BWP contains one or more consecutive common resource blocks. Assuming the number of a BWP is i, its starting point And length The following relationships must be met at the same time:
- the common resource block contained in the BWP must be located in the corresponding resource grid.
- the common resource block number is used, that is, it represents the distance from the lowest numbered resource block of the BWP to the "point A" (represented by the number of resource blocks).
- a resource block in a BWP is also called a "physical resource block" (PRB), and its number is Wherein physical resource block 0 is the lowest numbered resource block of the BWP, corresponding to the common resource block
- PRB physical resource block
- the uplink and downlink BWPs used by the UE during initial access are called initial active uplink BWP (initial active uplink BWP) and initial active downlink BWP (respectively).
- the uplink and downlink BWPs used are called active uplink BWP (active uplink BWP) and active downlink BWP (active downlink BWP), respectively.
- the number of subcarriers in a resource block is (That is, the lowest numbered subcarrier is subcarrier 0, and the highest numbered subcarrier is subcarrier ), Regardless of whether the resource block uses a common resource block number or a physical resource block number.
- the uplink and downlink are composed of multiple 10ms radio frames (radio frames, or system frames, sometimes referred to as frames, frames, numbered 0 to 1023), where each frame contains 10 1ms sub-frames (subframes, numbered 0-9 in the frame), each sub-frame contains Slots (slots, numbered in the sub-frame ), And each time slot contains OFDM symbols.
- Table 2 shows the different subcarrier spacing configurations. with The value of. Obviously, the number of OFDM symbols in each subframe
- the subscript x of a mathematical symbol indicating the transmission direction can be removed. For example, for a given downlink physical channel or signal, you can use Represents the number of resource blocks in the frequency domain of the resource grid corresponding to the subcarrier interval configuration ⁇ .
- the OFDM baseband signal generation formula for other physical channels or signals except PRACH Physical random-access channel, physical random access channel
- ⁇ p is the antenna port.
- ⁇ ⁇ is the subcarrier interval configuration, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- L is the number of OFDM symbols in a subframe
- ⁇ ⁇ 0 is the maximum value of the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList (also called scs-SpecificCarrierList).
- the PRACH OFDM baseband signal generation formula can be expressed as
- ⁇ p is the antenna port.
- ⁇ is the subcarrier interval configuration of the initial effective uplink BWP, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- ⁇ is the subcarrier interval configuration of the effective uplink BWP, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- ⁇ ⁇ 0 is the maximum value of the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList.
- the offset of the lowest numbered resource block occupied by the lowest PRACH transmission occasion in the frequency domain relative to the lowest numbered resource block (that is, physical resource block 0) of the initial valid uplink BWP (represented by the number of resource blocks) .
- N RA is an index of PRACH transmission opportunities in the frequency domain used by the OFDM baseband signal of the PRACH.
- a PRACH transmission described by the PRACH OFDM baseband signal corresponds to a PRACH transmission opportunity (depicted by n RA ) in a frequency domain and a PRACH transmission opportunity (determined by description).
- ⁇ Is the number of resource blocks occupied by PRACH transmission opportunities in each frequency domain. For initial access, it is expressed in terms of the number of PUSCH (Physical uplink shared channel) resource blocks on the initial effective uplink BWP. For non-initial access, the Way to express.
- PUSCH Physical uplink shared channel
- n 0; for ⁇ f RA ⁇ ⁇ 15, 30, 60, 120 ⁇ kHz, n is an interval And time 0 or time in a subframe The number of overlaps.
- ⁇ l 0 comes from the "starting symbol" in the random access configuration. For example, if the PRACH configuration index is 0, the start symbol is 0.
- L RA 839
- ⁇ f RA 1.25kHz
- N u 24576k
- the PRACH preamble format in the random access configuration is A1 / B1, A2 / B2 or A3 / B3, then
- the corresponding PRACH preamble in A1, A2 or A3 format is transmitted in the PRACH transmission opportunity.
- the uplink SC-FDMA baseband signal of LTE can be expressed as follows:
- ⁇ p is the antenna port.
- L is the number of SC-FDMA symbols in an uplink slot.
- the start time is in the time slot
- ⁇ Is the uplink carrier bandwidth, with RB (resource block, resource block) as a unit.
- an RF reference frequency for the NR uplink carrier or supplementary uplink carrier is introduced into an offset Shift ⁇ shift :
- F REF_shift F REF + ⁇ shift
- NR is offset by 7.5kHz at the RF end.
- NR also introduces the following offsets in baseband that are not in LTE:
- Is always equal to 0, and for other ⁇ values, that is, when ⁇ ⁇ ⁇ 0 , Generally not equal to 0.
- the number of frequency domain resource blocks of the resource grid corresponding to ⁇ When it is odd, surely not Integer multiples, which also means surely not An integer multiple of The corresponding frequency offset is not an integer number of RBs.
- the RB boundary between the resource grid corresponding to ⁇ f 15kHz and the LTE carrier not aligned.
- Figure 1 shows the case where such RB boundaries are not aligned.
- RB boundary misalignment makes time-frequency resource sharing between NR and LTE very inefficient.
- Non-Patent Document 1 RP-160671, New SID Proposal: Study on New Radio Access Technology
- Non-Patent Document 2 RP-170855, New WID, New Radio Access Technology
- the present invention provides a method performed by user equipment and user equipment, which can enable NR and LTE to achieve resource block alignment, thereby enabling efficient dynamic time-frequency resource sharing between NR and LTE. .
- a method performed by user equipment including: obtaining configuration information of parameters related to generation of an orthogonal frequency division multiplexed OFDM baseband signal of a physical channel or signal; and according to the obtained parameters,
- the configuration information generates an OFDM baseband signal of the physical channel or signal, and when generating the OFDM baseband signal of the physical channel or signal, a correction parameter that corrects a frequency offset is used.
- the physical channel or signal may be a physical random access channel PRACH or other physical channels or signals other than PRACH.
- a method performed by a user equipment including: obtaining configuration information of parameters related to the configuration of an uplink carrier or a supplementary uplink carrier; and determining the uplink carrier or Supplementing an offset amount of an RF reference frequency of an uplink carrier; and applying the offset amount to the RF reference frequency, and in determining the offset amount, a correction parameter that corrects a frequency offset is used.
- the value of the correction parameter may be a predefined value, or the value of the correction parameter is or among them, Equal to the frequency offset term related to the subcarrier spacing configuration ⁇
- ⁇ is a value corresponding to ⁇ 1
- ⁇ 1 is equal to a value selected according to a predefined rule in a subcarrier interval configuration for a corresponding carrier.
- the frequency offset term may be Calculated by:
- the correction parameter may be a first constant when a given condition is not satisfied, and a second constant different from the first constant when the given condition is satisfied.
- the given condition may include at least one of the following conditions:
- the parameter indicating the 7.5kHz frequency offset for uplink transmission has been configured
- ⁇ 0 in the subcarrier interval configuration for the corresponding carrier, or the uplink carrier or the supplementary uplink carrier.
- the acquired parameters may include an indication parameter for performing a 7.5 kHz frequency offset on uplink transmission.
- a user equipment including: a processor; and a memory storing instructions; wherein the instructions execute the above method when run by the processor.
- the manner of uplink carrier frequency offset in the existing 3GPP standard specifications for 5G is improved, and resource block alignment can be achieved between NR and LTE, thereby enabling NR and LTE. Efficient dynamic time-frequency resource sharing between them.
- Figure 1 shows the existing 3GPP standard specifications for 5G. Schematic diagram that may cause misalignment of RB boundaries in the NR and LTE coexistence scenario.
- FIG. 2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
- FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.
- FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
- FIG. 5 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
- FIG. 6 is a block diagram showing a user equipment UE according to the present invention.
- the following takes the 5G mobile communication system and its subsequent evolved versions as an example application environment, and specifically describes various embodiments according to the present invention.
- the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as a communication system after 5G and a 4G mobile communication system before 5G.
- 3GPP 3rd Generation Partnership Project, Third Generation Partnership Project
- CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing, cyclic prefix orthogonal frequency division multiplexing
- CRB Common Resource Block, physical resource block
- CSI-RS Channel-state information reference signal
- DCI Downlink ControlInformation, downlink control information
- DFT-s-OFDM Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing
- DM-RS Demodulation reference signal
- eMBB Enhanced Mobile Broadband, Enhanced Mobile Broadband Communication
- LTE Long Term Evolution, Long Term Evolution
- LTE-A Long-Term Evolution-Advanced
- mMTC massive Machine type Communication, large-scale machine communication
- OFDM Orthogonal, Frequency, Division, Multiplexing, Orthogonal Frequency Division Multiplexing
- PBCH Physical Broadcast Channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PRACH Physical random-access channel
- PRB Physical Resource Block
- PT-RS Phase-tracking reference signal
- PUCCH Physical Uplink Control Channel
- PUSCH Physical uplink shared channel
- RB Resource Block, resource block
- SC-FDMA Single-carrier Frequency-division Multiple Access, single carrier frequency division multiple access
- SSB SS / PBCH block, synchronization signal / physical broadcast channel block
- UE User Equipment
- uplink BWP refers to "initial active uplink BWP".
- configuration can be performed through initialUplinkBWP in uplinkConfigCommon in SIB1 (System information block 1).
- uplink BWP refers to "active uplink BWP".
- it can be configured through uplinkBWP-ToAddModList in uplinkConfig in ServingCellConfig and IE.
- ⁇ refers to the number of subcarriers in a resource block (such as a common resource block or a physical resource block),
- ⁇ Is the number of resource blocks occupied by PRACH transmission opportunities in each frequency domain. For initial access, it is expressed in terms of the number of PUSCH (Physical uplink shared channel) resource blocks on the initial effective uplink BWP. For non-initial access, the Way to express.
- PUSCH Physical uplink shared channel
- FIG. 2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
- the steps performed by the user equipment UE include:
- step 101 configuration information of parameters related to generation of OFDM baseband signals of physical channels or signals other than PRACH is acquired.
- the parameter configuration information is obtained from a base station.
- the parameters include:
- the number of the lowest numbered common resource block of the resource grid corresponding to the subcarrier interval configuration ⁇ used by the OFDM baseband signal of the physical channel or signal other than PRACH is
- the number of frequency domain resource blocks is Said with It can be configured respectively by the parameter offsetToCarrier and the parameter carrierBandwidth in the SCS-SpecificCarrier IE corresponding to ⁇ .
- the number of the lowest-numbered common resource block of the resource grid corresponding to the reference subcarrier interval configuration ⁇ 0 is The number of frequency domain resource blocks is
- the reference subcarrier interval configuration ⁇ 0 is the maximum value in the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList. Said with It can be configured respectively by the parameter offsetToCarrier and the parameter carrierBandwidth in the SCS-SpecificCarrier IE corresponding to ⁇ 0 .
- the OFDM baseband signals of other physical channels or signals other than PRACH are generated according to the configuration information of the parameters related to the generation of OFDM baseband signals of other physical channels or signals other than PRACH.
- the OFDM baseband signals of the physical channels or signals other than PRACH may be time-continuous signals. Represented as one of the following three formulas (called formula one, formula two, and formula three in the order of appearance):
- ⁇ p is the antenna port.
- ⁇ ⁇ is the subcarrier interval configuration, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- L is the number of OFDM symbols in a subframe
- ⁇ ⁇ 0 is the maximum value of the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList.
- ⁇ k s is a correction parameter that corrects the frequency offset, and the unit can be kHz.
- the value of k s can be one of the following:
- K s is equal to a predefined value.
- the predefined value is equal to 0, or or or or
- the value of k s is one of a set of predefined values. For example, the value of k s is determined according to a predefined condition or pre-configured information or an indication of DCI or an indication of MAC CE or an indication of RRC signaling or a configuration of an RRC parameter.
- k s when the predefined conditions are not met, k s does not exist or is equal to one of the set of predefined values; when the predefined conditions are met, k s is equal to the set of predefined values The other of the values.
- the predefined condition may be any combination of one or more of the following in an "and" or "or” relationship:
- the carrier corresponding to the OFDM baseband signal of the physical channel or signal other than PRACH is on one of the SUL frequency bands or the frequency bands n1, n2, n3, n5, n7, n8, n20, n28, n66, n71.
- ⁇ 0 in the subcarrier interval configuration for the corresponding carrier (such as all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList).
- the set of predefined values may include 0, with One or more of them.
- ⁇ 1 may be equal to a value selected according to a predefined rule, such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (for example, all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- a predefined rule such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (for example, all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- ⁇ 1 may be equal to a value selected according to a predefined rule, such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- a predefined rule such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- whether k s is present can be indicated through DCI, MAC CE, or RRC signaling, or determined through the configuration of RRC parameters.
- the other physical channels or signals except PRACH may include: PUSCH, PUCCH, SRS, PT-RS, DM-RS, CSI-RS, PSS, SSS, PDSCH, PDCCH, PBCH, etc. .
- the manner of uplink carrier frequency offset in the existing 3GPP standard specifications for 5G is improved, and resource block alignment can be achieved between NR and LTE. Efficient dynamic time-frequency resource sharing.
- FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.
- the steps performed by the user equipment UE include:
- step 201 configuration information of parameters related to generation of an OFDM baseband signal of PRACH is acquired. For example, obtain one or more of the following parameter configuration information from the base station:
- the subcarrier interval of the uplink BWP is configured as ⁇ (the corresponding subcarrier interval is ⁇ f), and the lowest numbered resource block (using a common resource block number) is
- Random access configuration For example, for a paired spectrum in frequency range 1 (FR1), if the PRACH Configuration Index (for example, configured by the high-level parameter prach-ConfigurationIndex) is 87, the preamble format ) Is A1, the starting symbol is 0, the number of PRACH slots within a subframe is 1, and the number of time-domain PRACH opportunities in PRACH slots is 1. -domain PRACH occasions within a PRACH slot, ) Is 6, PRACH duration (PRACH duration, ) Is 2.
- the number of the lowest numbered common resource block of the resource grid corresponding to the subcarrier interval configuration ⁇ of the uplink BWP is The number of frequency domain resource blocks is Said with It can be configured respectively by the parameter offsetToCarrier and the parameter carrierBandwidth in the SCS-SpecificCarrier IE corresponding to ⁇ .
- the number of the lowest-numbered common resource block of the resource grid corresponding to the reference subcarrier interval configuration ⁇ 0 is The number of frequency domain resource blocks is
- the reference subcarrier interval configuration ⁇ 0 is the maximum value in the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList. Said with It can be configured respectively by the parameter offsetToCarrier and the parameter carrierBandwidth in the SCS-SpecificCarrier IE corresponding to ⁇ 0 .
- the offset (represented by the number of resource blocks) of the lowest PRACH transmission opportunity in the frequency domain from the lowest numbered resource block of the uplink BWP is For example, it is configured by the high-level parameter msgl-FrequencyStart.
- the number of PRACH transmission occasions for frequency-division multiplexing (FDM) at a given time instance is M, for example, configured by the high-level parameter msgl-FDM; correspondingly, PRACH in the frequency domain used by the PRACH OFDM baseband signal
- the value set of the index n RA of the transmission opportunity may be ⁇ 0, 1, ..., M-1 ⁇ .
- the PRACH OFDM baseband signal is generated according to the configuration information of the parameters related to the generation of the PRACH OFDM baseband signal.
- the PRACH OFDM baseband signal may use a time-continuous signal Expressed as
- ⁇ p is the antenna port.
- ⁇ is the subcarrier interval configuration of the initial effective uplink BWP, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- ⁇ is the subcarrier interval configuration of the effective uplink BWP, and ⁇ f is its corresponding subcarrier interval, see Table 1.
- ⁇ ⁇ 0 is the maximum value of the subcarrier interval configuration for the corresponding carrier, such as the maximum value of all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList.
- the offset of the lowest numbered resource block occupied by the lowest PRACH transmission occasion in the frequency domain relative to the lowest numbered resource block (that is, physical resource block 0) of the initial valid uplink BWP (represented by the number of resource blocks) .
- N RA is an index of PRACH transmission opportunities in the frequency domain used by the OFDM baseband signal of the PRACH.
- a PRACH transmission described by the PRACH OFDM baseband signal corresponds to a PRACH transmission opportunity (depicted by n RA ) in a frequency domain and a PRACH transmission opportunity (determined by description).
- ⁇ Is the number of resource blocks occupied by PRACH transmission opportunities in each frequency domain. For initial access, it is expressed in terms of the number of PUSCH (Physical uplink shared channel) resource blocks on the initial effective uplink BWP; for non-initial access, the number of PUSCH resource blocks on the effective uplink BWP is Way to express.
- PUSCH Physical uplink shared channel
- n 0; for ⁇ f RA ⁇ ⁇ 15, 30, 60, 120 ⁇ kHz, n is an interval And time 0 or time in a subframe The number of overlaps.
- ⁇ l 0 comes from the "starting symbol" in the random access configuration. For example, if the PRACH configuration index is 0, the start symbol is 0.
- L RA 839
- ⁇ f RA 1.25kHz
- N u 24576k
- the PRACH preamble format in the random access configuration is A1 / B1, A2 / B2 or A3 / B3, then
- the corresponding PRACH preamble in A1, A2 or A3 format is transmitted in the PRACH transmission opportunity.
- ⁇ k s is a correction parameter that corrects the frequency offset, and the unit can be kHz.
- the value of k s can be one of the following:
- K s is equal to a predefined value.
- the predefined value is equal to 0, or or or or
- the value of k s is one of a set of predefined values. For example, the value of k s is determined according to a predefined condition or pre-configured information or an indication of DCI or an indication of MAC CE or an indication of RRC signaling or a configuration of an RRC parameter.
- k s when the predefined conditions are not met, k s does not exist or is equal to one of the set of predefined values; when the predefined conditions are met, k s is equal to the set of predefined values The other of the values.
- the predefined condition may be any combination of one or more of the following in an "and" or "or” relationship:
- the carrier corresponding to the PRACH OFDM baseband signal is on one of the SUL frequency bands or the frequency bands n1, n2, n3, n5, n7, n8, n20, n28, n66, and n71.
- ⁇ 0 in the subcarrier interval configuration for the corresponding carrier (such as all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList).
- the set of predefined values may include 0, with One or more of them.
- ⁇ 1 may be equal to a value selected according to a predefined rule, such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- a predefined rule such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- ⁇ 1 may be equal to a value selected according to a predefined rule, such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- a predefined rule such as a minimum value, in a subcarrier interval configuration for a corresponding carrier (such as all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList).
- whether k s is present can be indicated through DCI, MAC CE, or RRC signaling, or determined through the configuration of RRC parameters.
- resource alignment between NR and LTE can be achieved, so that efficient dynamic time-frequency resource sharing between NR and LTE can be achieved.
- FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
- the steps performed by the user equipment UE include:
- step 301 configuration information of parameters related to uplink carrier or supplementary uplink carrier configuration is acquired.
- the parameter configuration information is obtained from a base station.
- the parameters include:
- ⁇ Indicate the 7.5kHz frequency offset for uplink transmission, for example, configure it with the parameter frequencyShift7p5khz.
- step 302 configuration information about the configuration parameters based on the uplink supplementary uplink carrier or carriers, or in addition to determining the uplink carrier frequency offset of the reference uplink RF carrier ⁇ shift.
- ⁇ S 2 is a correction parameter that corrects the frequency offset, and the unit can be kHz.
- the value of S 2 can be one of the following:
- ⁇ S 2 is equal to a predefined value.
- the predefined value is equal to 0, or or or or
- the value of S 2 is one of a set of predefined values.
- the value of S 2 is determined according to a predefined condition or pre-configured information or an indication of DCI or an indication of MAC CE or an indication of RRC signaling or a configuration of an RRC parameter.
- S 2 when the predefined conditions are not met, S 2 does not exist or is equal to one of the set of predefined values; when the predefined conditions are met, S 2 is equal to the set of predefined values The other of the values.
- the predefined condition may be any combination of one or more of the following in an "and" or "or” relationship:
- the uplink carrier or supplementary uplink carrier is on one of the SUL frequency bands or the frequency bands n1, n2, n3, n5, n7, n8, n20, n28, n66, and n71.
- ⁇ 0 in the subcarrier interval configuration for the uplink carrier or the supplementary uplink carrier (such as all subcarrier interval configurations configured in the high-level parameter scsSpecificCarrierList).
- the set of predefined values may include 0, with One or more of them.
- ⁇ 1 may be equal to a value selected according to a predefined rule in a subcarrier interval configuration for the uplink carrier or a supplementary uplink carrier (for example, all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList), such as the minimum value. value.
- ⁇ 1 may be equal to a value selected according to a predefined rule in a subcarrier interval configuration for the uplink carrier or a supplementary uplink carrier (for example, all subcarrier interval configurations configured in a high-level parameter scs-SpecificCarrierList), such as the minimum value. value.
- whether S 2 is present can be indicated by DCI, MAC CE or RRC signaling, or determined by the configuration of RRC parameters.
- an offset ⁇ shift is applied to the RF reference frequency, for example:
- F REF_shift F REF + ⁇ shift
- the third embodiment of the present invention is only applied to the SUL frequency band, and the frequency bands n1, n2, n3, n5, n7, n8, n20, n28, n66, and n71.
- resource alignment between NR and LTE can be achieved, so that efficient dynamic time-frequency resource sharing between NR and LTE can be achieved.
- FIG. 5 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
- the steps performed by the user equipment UE include:
- step 401 configuration information of parameters related to uplink carrier or supplementary uplink carrier configuration is acquired.
- the parameter configuration information is obtained from a base station.
- the parameters include:
- ⁇ Indicate the 7.5kHz frequency offset for uplink transmission, for example, configure it with the parameter frequencyShift7p5khz.
- the configuration information of the parameters related to the configuration of the uplink carrier or the supplementary uplink carrier satisfies one or more of the following restrictions:
- an offset ⁇ shift of the RF reference frequency of the uplink carrier or the supplementary uplink carrier is determined according to the configuration information of the parameters related to the configuration of the uplink carrier or the supplementary uplink carrier.
- an offset ⁇ shift is applied to the RF reference frequency, for example:
- F REF_shift F REF + ⁇ shift
- the fourth embodiment of the present invention is only applied to the SUL frequency band, and the frequency bands n1, n2, n3, n5, n7, n8, n20, n28, n66, and n71.
- the resource blocks can be aligned between NR and LTE within the parameter configuration range allowed by the system, so that efficient dynamic time-frequency resource sharing between NR and LTE can be achieved.
- FIG. 6 is a block diagram showing a user equipment UE according to the present invention.
- the user equipment UE60 includes a processor 601 and a memory 602.
- the processor 601 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like.
- the memory 602 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memories.
- the memory 602 stores program instructions. When the instruction is executed by the processor 601, the foregoing method performed by the user equipment described in detail in the present invention may be executed.
- the method and related equipment of the present invention have been described above with reference to the preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the embodiments described above can be combined with each other without any contradiction.
- the method of the invention is not limited to the steps and sequence shown above.
- the network node and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs, and so on.
- the various identifiers shown above are merely exemplary and not restrictive, and the present invention is not limited to specific cells as examples of these identifiers. Those skilled in the art can make many variations and modifications based on the teachings of the illustrated embodiments.
- the foregoing embodiments of the present invention may be implemented by software, hardware, or a combination of both software and hardware.
- the various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing Devices, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and more.
- DSP digital signal processing
- ASICs application-specific integrated circuits
- FPGAs field-programmable gate arrays
- CPLDs programmable logic devices
- base station may refer to mobile communication data and control switching centers with larger transmission power and wider coverage area, including functions such as resource allocation scheduling, data receiving and sending.
- User equipment may refer to a user's mobile terminal, including, for example, a mobile phone, a notebook, and other terminal equipment capable of wireless communication with a base station or a micro base station.
- the embodiments of the invention disclosed herein may be implemented on a computer program product.
- the computer program product is a product having a computer-readable medium having computer program logic encoded on the computer-readable medium.
- the computer program logic When executed on a computing device, the computer program logic provides related operations to implement The above technical solution of the present invention.
- the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
- This arrangement of the present invention is typically provided as software, code, and / or other data structures, or as one or more, provided or encoded on a computer-readable medium such as an optical medium (e.g., a CD-ROM), a floppy disk, or a hard disk.
- Software or firmware or such a configuration may be installed on a computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
- each functional module or individual feature of the base station equipment and terminal equipment used in each of the above embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits.
- Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs) or general-purpose integrated circuits, field-programmable gate arrays (FPGAs), or other Programming logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above.
- a general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine.
- the above-mentioned general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit.
- the present invention can also use integrated circuits obtained using the advanced technologies.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本发明提供了一种由用户设备执行的方法以及用户设备，所述方法包括：获取与物理信道或信号的正交频分复用OFDM基带信号的生成有关的参数的配置信息；以及根据获取的所述参数的配置信息，生成所述物理信道或信号的OFDM基带信号，在生成所述物理信道或信号的OFDM基带信号时，利用了对频率偏移进行修正的修正参数。由此，能够使得NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
Description
本发明涉及无线通信技术领域，具体涉及由用户设备执行的方法、由基站执行的方法以及相应的用户设备。
2016年3月，在3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)RAN#71次全会上，一个关于5G技术标准的新的研究项目(参见非专利文献1)获得批准。该研究项目的目的是开发一个新的无线(New Radio：NR)接入技术以满足5G的所有应用场景、需求和部署环境。NR主要有三个应用场景：增强的移动宽带通信(Enhanced Mobile Broadband：eMBB)、大规模机器类通信(massive Machine Type Communication：mMTC)和超可靠低延迟通信(Ultra-Reliable and Low Latency Communications：URLLC)。2017年6月，在3GPP RAN#75次全会上，相应的5G NR的工作项目(参见非专利文献2)获得批准。
5G在下行方向支持的波形(waveform)是CP-OFDM(Cyclic Prefix Orthogonal Frequency Division Multiplexing，循环前缀正交频分复用)，在上行方向支持的波形包括CP-OFDM和DFT-s-OFDM(Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing，离散傅里叶变换扩频正交频分复用)。
在5G中，CP-OFDM和DFT-s-OFDM的差别在于，后者在层映射(layer mapping)操作之后要执行一个称为“变换预编码”(transform precoding)的操作，而前者不执行这个操作。
CP-OFDM和DFT-s-OFDM的关键参数是子载波间隔(subcarrier spacing)和循环前缀(cyclic prefix)长度。在5G中，对于一个给定的波形(如CP-OFDM，或DFT-s-OFDM)，支持在一个小区中使用多个参数集(numerology，如未特别说明，指子载波间隔；有时候也指子载波间隔 以及循环前缀长度)。5G支持的波形参数集如表1所示，其中定义了“正常”和“扩展”两种循环前缀类型。
表1 5G支持的波形参数集
| μ | Δf＝2 μ·15[kHz] | 循环前缀(Cyclic prefix) |
| 0 | 15 | 正常(Normal) |
| 1 | 30 | 正常 |
| 2 | 60 | 正常，扩展(Extended) |
| 3 | 120 | 正常 |
| 4 | 240 | 正常 |
在一个给定传输方向(记为x，其中若x＝DL则表示downlink，即下行，若x＝UL则表示uplink，即上行，或者supplementary uplink，即补充上行)的载波(carrier)上，对每一个波形参数集μ(由高层参数subcarrierSpacing配置)都定义了一个资源栅格(resource grid，也称为子载波特定的载波，SCS-specific carrier)，其在频域上包含
个子载波(即
个资源块，每个资源块包含
个子载波)，在时域上包含
个OFDM符号(即一个子帧内的OFDM符号数，具体取值跟μ有关)，其中
指一个资源块(resource block，RB，可以用公共资源块或物理资源块等进行编号)中的子载波个数，
所述资源栅格的最低编号的公共资源块(common resource block，CRB)
由高层参数offsetToCarrier配置，频域资源块个数
由高层参数carrierBandwidth配置。其中，
●公共资源块是针对波形参数集定义的。例如，对于μ＝0(即Δf＝15kHz)，一个公共资源块的大小为15×12＝180kHz，而对于μ＝1(即Δf＝30kHz)，一个公共资源块的大小为30×12＝360kHz。
●对所有波形参数集，公共资源块0的子载波0的中心频率都指向频域的同一个位置。这个位置又称为“A点”(point A)。
一个载波中定义的所有子载波间隔配置及其所对应的资源栅格可以 由参数scs-SpecificCarrierList进行配置。
对每一个波形参数集，可以定义一个或者多个“带宽片段”(bandwidth part，简称BWP)。每个BWP包含一个或者多个连续的公共资源块。假设某个BWP的编号为i，则其起点
和长度
必须同时满足以下关系：
即该BWP所包含的公共资源块必须位于所对应的资源栅格内。
使用公共资源块编号，即它表示BWP的最低编号的资源块到“A点”的距离(以资源块个数表示)。
BWP内的资源块也称为“物理资源块”(physical resource block，PRB)，其编号为
其中物理资源块0是该BWP的最低编号的资源块，对应公共资源块
UE在做初始接入(initial access)时使用的上、下行BWP分别称为初始有效上行BWP(initial active uplink BWP)和初始有效下行BWP(initial active downlink BWP)，在非初始接入时(即除初始接入外的其他情况下)使用的上、下行BWP分别称为有效上行BWP(active uplink BWP)和有效下行BWP(active downlink BWP)。
一个资源块内的子载波编号为
(即最低编号的子载波是子载波0，最高编号的子载波是子载波
)，不管该资源块使用公共资源块编号还是物理资源块编号。
在时域，上、下行都由多个10ms长度的无线帧(radio frame，或者称为系统帧，system frame，有时简称为帧，frame，编号为0～1023)组成， 其中每个帧包含10个1ms长度的子帧(subframe，在帧内的编号为0～9)，每个子帧包含
个时隙(slot，在子帧内的编号为
)，而每个时隙包含
个OFDM符号。表2显示了不同的子载波间隔配置下的
和
的取值。显然，每个子帧内的OFDM符号的个数
表2 和子载波间隔配置μ相关的时域参数
5G的基本时间单位为T
c＝1/(Δf
max·N
f)，其中Δf
max＝480·10
3Hz，N
f＝4096。常数k＝T
s/T
c＝64，其中T
s＝1/(Δf
ref·N
f，ref)，Δf
ref＝15·10
3Hz，N
f，ref＝2048。
当不存在产生混淆的风险时，一个数学符号的下标中表示传输方向的x可以去掉。例如，对于一个给定的下行物理信道或信号，可以使用
表示子载波间隔配置μ对应的资源栅格在频域上的资源块个数。
在现有的3GPP关于5G的标准规范中，除PRACH(Physical random-access channel，物理随机接入信道)外的其他物理信道或信号的OFDM基带信号生成公式可以表示为
其中，
●p是天线端口。
●μ是子载波间隔配置，Δf是其对应的子载波间隔，见表1。
●l是一个子帧内的OFDM符号的编号，
●
●
●对l＝0，
●对l≠0，
●
●对扩展循环前缀，
●对正常循环前缀，以及l＝0或l＝7·2
μ，
●对正常循环前缀，以及l≠0且l≠7·2
μ，
●μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList(又称为scs-SpecificCarrierList)中配置的所有子载波间隔配置中的最大值。
在现有的3GPP关于5G的标准规范中，PRACH的OFDM基带信号生成公式可以表示为
其中，
●p是天线端口。
●对于初始接入，μ是初始有效上行BWP的子载波间隔配置，Δf是其对应的子载波间隔，见表1。对于非初始接入，μ是有效上行BWP的子载波间隔配置，Δf是其对应的子载波间隔，见表1。
●K＝Δf/Δf
RA。
●
●
●μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置中的最大值。
●对于初始接入，
是初始有效上行BWP的最低编号的资源块。对于非初始接入，
是有效上行BWP的最低编号的资源块。
●对于初始接入，
是频域上最低PRACH传输机会(transmission occasion)所占用的最低编号的资源块相对于初始有效上行BWP的最低编号的资源块(即物理资源块0)的偏移(以资源块个数表示)。对于非初始接入，
是频域上最低PRACH传输机会(transmission occasion)所占用的最低编号的资源块相对于有效上行BWP的最低编号的资源块(即物理资源块0)的偏移(以资源块个数表示)。
●n
RA是所述PRACH的OFDM基带信号所使用的频域上的PRACH传输机会的索引。所述PRACH的OFDM基带信号所描述的一次PRACH传输对应一个频域上的PRACH传输机会(由n
RA描述)和一个时域上的PRACH传输机会(由
描述)。
●
是每个频域上的PRACH传输机会所占用的资源块的个数。对于初始接入，以初始有效上行BWP上的PUSCH(Physical uplink shared channel，物理上行共享信道)资源块个数的方式表示；对于非初始接入，以有效上行BWP上的PUSCH资源块个数的方式表示。
●
●
其中，对于Δf
RA∈{1.25，5}kHz，n＝0；对于Δf
RA∈{15，30，60，120}kHz，n是区间
和一个子帧中的时刻0或时刻
重叠的次数。
●对于Δf
RA∈{1.25，5，15，30}kHz，
是PRACH前导(preamble)在一个子帧内的起始位置；对于Δf
RA∈{60，120}kHz，
是PRACH前导在一个60kHz时隙内的起始位置。
对l＝0，
对l≠0，
其中，
■假定所述子帧或60kHz时隙起始于t＝0。
■假定时间提前量N
TA＝0。
■对
和
的解释与对相应的量在除PRACH(Physical random-access channel，物理随机接入信道)外的其他物理信道或信号的OFDM基带信号生成公式中的解释一样。
■对于Δf
RA∈{1.25，5}kHz，假定μ＝0；在其他情况下μ取由Δf
RA∈{15，30，60，120}kHz所对应的μ值，见表1。
■
其中，
◆l
0来自随机接入配置中的“起始符号”(starting symbol)。例如，若PRACH配置索引(PRACH configuration index)为0，则起始符号为0。
◆
是PRACH时隙内的PRACH传输机会(transmission occasion)，其编号为
其中，对L
RA＝839，
对L
RA＝139，
来自随机接入配置中的“PRACH时隙内的时域PRACH机会个数”(number of time-domain PRACH occasions within a PRACH slot)。
◆
来自随机接入配置中的“PRACH时长”(PRACH duration)。
◆对于Δf
RA∈{1.25，5，15，60}kHz，
◆对于Δf
RA∈{30，120}kHz，且随机接入配置中的“子帧内的PRACH时隙个数”(Number of PRACH slots within a subframe)或者“60kHz时隙内的PRACH时隙个数”(Number of PRACH slots within a 60kHz slot)等于1，则
◆其他情况下，
●L
RA、Δf
RA、N
u和
取决于PRACH前导的格式。例如，对于格式0，L
RA＝839、Δf
RA＝1.25kHz、N
u＝24576k，
●
和
取决于L
RA、Δf
RA、Δf的组合。例如，对于L
RA＝839，Δf
RA＝1.25kHz和Δf＝15kHz，
●若随机接入配置中的PRACH前导格式为A1/B1，A2/B2或者A3/B3，则
■若
则在所述PRACH传输机会中传输相应的B1，B2或者B3格式的PRACH前导。
■否则在所述PRACH传输机会中传输相应的A1，A2或者A3 格式的PRACH前导。
作为对比，LTE上行的SC-FDMA基带信号可以表述如下：
其中，
●0≤t＜(N
CP，l+N)×T
s。
●N＝2048。
●T
s是LTE的基本时间单位。T
s＝1/(15000×2048)秒。
●
●Δf＝15kHz。
●p是天线端口。
●
是资源元素(k，l)在天线端口p上的内容。
●l是在一个上行时隙内的SC-FDMA符号的编号。在一个上行时隙内的SC-FDMA符号必须按l的递增顺序传输，起始于l＝0。对于l＞0的SC-FDMA符号，其起始时间是时隙内的
●
是上行载波带宽，以RB(resource block，资源块)为单位。
●
是频域的RB大小，以子载波个数表示。
●对扩展循环前缀，以及l＝0，1，...，5，N
CP，l＝512。
●对正常循环前缀，以及l＝0，N
CP，l＝160。
●对正常循环前缀，以及l＝1，2，...，6，N
CP，l＝144。
LTE的基带信号中引入了
的频偏(frequency shift)。为了让NR可以和LTE动态地共享同一个上行载波频率上的时频资源，NR的设计中引入了可以实现
频偏的选项，使得NR和LTE可以实现子载波对齐 (subcarrier alignment)。当然，由于LTE在上行(除PRACH外)只支持Δf＝15kHz，NR和LTE共存的场景也只考虑了Δf＝15kHz(对NR，即μ＝0)的情况，此时
具体来说，对于一些特定的频段，如SUL频段以及频段n1、n2、n3、n5、n7、n8、n20、n28、n66、n71，对NR上行载波或补充上行载波的RF参考频率引入一个偏移量Δ
shift：
F
REF_shift＝F
REF+Δ
shift
其中，Δ
shift的值由高层参数frequencyShift7p5khz确定：若参数frequencyShift7p5khz未配置，则Δ
shift＝0kHz；若参数frequencyShift7p5khz已配置，则Δ
shift＝7.5kHz。
可以看出，和LTE在基带偏移7.5kHz不同的是，NR是在RF端偏移7.5kHz。
问题是，从前面所描述的NR的OFDM基带信号生成公式可以看出，NR在基带也引入了如下的、在LTE中没有的偏移：
可以看出，
总是等于0，而对于其他的μ值，即当μ≠μ
0时，
一般不等于0。特别地，当μ所对应的资源栅格的频域资源块个数
是奇数时，
肯定不是
的整数倍，这也意味着
肯定不是
的整数倍，即
所对应的频率偏移不是整数个RB，导致在NR和LTE共享同一个上行载波频率(或者上行载波频率部分重叠)时，NR的对应Δf＝15kHz的资源栅格和LTE载波之间的RB边界不对齐。图1示出了这种RB边界不对齐的情况。RB边界不对齐使得NR和LTE之间的时频资源共享非常低效，例如，由于LTE中的一个RB同时和NR中的两个RB(部分)重叠，当LTE中使用了某个RB时，NR中相应的两个RB都无法被调度。因此，需要改进现有的3GPP关于5G的标准规范中上行 载波频率偏移的方式，以实现NR和LTE之间的高效动态时频资源共享。
现有技术文献
非专利文献
非专利文献1：RP-160671，New SID Proposal：Study on New Radio Access Technology
非专利文献2：RP-170855，New WID on New Radio Access Technology
发明内容
为了解决上述问题中的至少一部分，本发明提供了一种由用户设备执行的方法以及用户设备，能够使得NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
根据本发明，提出了一种由用户设备执行的方法，包括：获取与物理信道或信号的正交频分复用OFDM基带信号的生成有关的参数的配置信息；以及根据获取的所述参数的配置信息，生成所述物理信道或信号的OFDM基带信号，在生成所述物理信道或信号的OFDM基带信号时，利用了对频率偏移进行修正的修正参数。
在上述方法中，可以是，所述物理信道或信号是物理随机接入信道PRACH或者除PRACH外的其他物理信道或信号。
根据本发明，提出了一种由用户设备执行的方法，包括：获取与上行载波或补充上行载波的配置有关的参数的配置信息；根据获取的所述参数的配置信息，确定所述上行载波或补充上行载波的射频RF参考频率的偏移量；以及对所述RF参考频率应用所述偏移量，在确定所述偏移量时，利用了对频率偏移进行修正的修正参数。
在上述方法中，可以是，所述修正参数的取值是预定义的值，或者，所述修正参数的取值是
或
其中，
等于与子载波间隔配置μ有关的频率偏移项
中μ为μ
1时所对应的值，μ
1等于针对相应载波的子载波间隔配置中按照预定义的规则选出的一个值。
在上述方法中，可以是，所述频率偏移项
由下式计算：
其中，
在上述方法中，可以是，所述修正参数在给定条件不满足时是第一常量，在给定条件满足时是与第一常量不同的第二常量。
在上述方法中，可以是，所述给定条件包括下述条件中的至少一个：
资源栅格的频率资源块个数
为奇数；
对上行传输进行7.5kHz频率偏移的指示参数已配置；
所述物理信道或信号的OFDM基带信号的对应载波、或者所述上行载波或补充上行载波在SUL、n1、n2、n3、n5、n7、n8、n20、n28、n66、n71中的任一个频段上；
针对所述对应载波、或者所述上行载波或补充上行载波的子载波间隔配置中存在μ＝0的配置。
在上述方法中，可以是，获取的所述参数中包括对上行传输进行7.5kHz频率偏移的指示参数。
在上述方法中，可以是，所述RF参考频率的偏移量Δ
shift由Δ
shift＝S
1+S
2表示，其中，S
1在所述指示参数未配置时是0kHz，在所述指示参数已配置时是7.5kHz；S
2是所述修正参数。
根据本发明，提出了一种用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行上述方法。
发明效果
根据本发明的由用户设备执行的方法以及用户设备，改进了现有的3GPP关于5G的标准规范中上行载波频率偏移的方式，能够使得NR和 LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1是表示现有的3GPP关于5G的标准规范中
可能会导致在NR和LTE共存场景下RB边界不对齐的示意图。
图2是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。
图3是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。
图4是示出了根据本发明的实施例三的由用户设备执行的方法的流程图。
图5是示出了根据本发明的实施例四的由用户设备执行的方法的流程图。
图6是表示本发明所涉及的用户设备UE的框图。
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下文以5G移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本发明的多个实施方式。然而，需要指出的是，本发明不限于以下实施方式，而是可适用于更多其它的无线通信系统，例如5G之后的通信系统以及5G之前的4G移动通信系统等。
下面描述本发明涉及的部分术语，如未特别说明，本发明涉及的术语采用此处定义。本发明给出的术语在LTE、LTE-Advanced、LTE-Advanced Pro、NR以及之后的通信系统中可能采用不同的命名方式，但本发明中 采用统一的术语，在应用到具体的系统中时，可以替换为相应系统中采用的术语。
3GPP：3rd Generation Partnership Project，第三代合作伙伴计划
BWP：Bandwidth Part，带宽片段
CP-OFDM：Cyclic Prefix Orthogonal Frequency Division Multiplexing，循环前缀正交频分复用
CRB：Common Resource Block，物理资源块
CSI-RS：Channel-state information reference signal，信道状态信息参考信号
DCI：Downlink Control Information，下行控制信息
DFT-s-OFDM：Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing，离散傅里叶变换扩频正交频分复用
DM-RS：Demodulation reference signal，解调参考信号
eMBB：Enhanced Mobile Broadband，增强的移动宽带通信
IE：Information Element，信息元素
LTE：Long Term Evolution，长期演进
LTE-A：Long Term Evolution-Advanced，长期演进技术升级版
MAC：Medium Access Control，介质访问控制
MAC CE：MAC Control Element，MAC控制元素
mMTC：massive Machine Type Communication，大规模机器类通信
NR：New Radio，新无线电
OFDM：Orthogonal Frequency Division Multiplexing，正交频分复用
PBCH：Physical Broadcast Channel，物理广播信道
PDCCH：Physical Downlink Control Channel，物理下行控制信道
PDSCH：Physical Downlink Shared Channel，物理下行共享信道
PRACH：Physical random-access channel，物理随机接入信道
PRB：Physical Resource Block，物理资源块
PT-RS：Phase-tracking reference signal，相位跟踪参考信号
PUCCH：Physical Uplink Control Channel，物理上行控制信道
PUSCH：Physical uplink shared channel，物理上行共享信道
Random Access Preamble，随机接入前导
RB：Resource Block，资源块
RF：Radio Frequency，射频
RRC：Radio Resource Control，无线资源控制
SC-FDMA：Single-carrier Frequency-division Multiple Access，单载波频分多址
SRS：Sounding reference signal，探测参考信号
SSB：SS/PBCH block，同步信号/物理广播信道块
SUL：Supplementary Uplink，补充上行
UE：User Equipment，用户设备
URLLC：Ultra-Reliable and Low Latency Communication，超可靠低延迟通信
如未特别说明，在本发明所有实施例和实施方式中：
●对于初始接入，“上行BWP”指的是“初始有效上行BWP”(initial active uplink BWP)。例如，可以通过SIB1(System information block 1，系统信息块1)中的uplinkConfigCommon中的initialUplinkBWP进行配置。
●对于非初始接入，“上行BWP”指的是“有效上行BWP”(active uplink BWP)。例如，可以通过ServingCellConfig IE中的uplinkConfig中的uplinkBWP-ToAddModList进行配置。
●对数学符号和数学表达式的使用和解释沿用现有技术。例如，
■
指一个资源块(如公共资源块，或物理资源块)中的子载波个数，
■
是每个频域上的PRACH传输机会所占用的资源块的个数。对于初始接入，以初始有效上行BWP上的PUSCH(Physical uplink shared channel，物理上行共享信道)资源块个数的方式表示；对于非初始接入，以有效上行BWP上的PUSCH资源块个数的方式表示。
[实施例一]
图2是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。
在本发明的实施例一中，用户设备UE执行的步骤包括：
在步骤101，获取与除PRACH外的其他物理信道或信号的OFDM基带信号的生成有关的参数的配置信息。例如，从基站获取所述参数的配置信息。所述参数包括：
●产生所述除PRACH外的其他物理信道或信号的OFDM基带信号所涉及的波形参数集所对应的资源栅格的配置。
例如，所述除PRACH外的其他物理信道或信号的OFDM基带信号所使用的子载波间隔配置μ对应的资源栅格的最低编号的公共资源块的编号是
频域资源块个数为
所述
和
可以分别通过μ所对应的SCS-SpecificCarrier IE中的参数offsetToCarrier和参数carrierBandwidth分别进行配置。
又如，参考子载波间隔配置μ
0对应的资源栅格的最低编号的公共资源块的编号是
频域资源块个数为
其中，所述参考子载波间隔配置μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置中的最大值。所述
和
可以分别通过μ
0所对应的SCS-SpecificCarrier IE中的参数offsetToCarrier和参数carrierBandwidth分别进行配置。
在步骤103，根据所述与除PRACH外的其他物理信道或信号的OFDM基带信号的生成有关的参数的配置信息，生成所述除PRACH外的其他物理信道或信号的OFDM基带信号。例如，所述除PRACH外的其他物理信道或信号的OFDM基带信号可以用时间连续信号 (time-continuous signal)
表示为下面三个公式(按出现顺序分别称为公式一、公式二和公式三)中的一个：
●
●
●
其中，
●p是天线端口。
●μ是子载波间隔配置，Δf是其对应的子载波间隔，见表1。
●l是一个子帧内的OFDM符号的编号，
●
●
●对l＝0，
●对l≠0，
●
●对扩展循环前缀，
●对正常循环前缀，以及l＝0或l＝7·2
μ，
●对正常循环前缀，以及l≠0且l≠7·2
μ，
●μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置中的最大值。
●k
s是一个对频率偏移进行修正的修正参数，单位可以是kHz。k
s的取值可以是下面中的一种：
■k
s等于一个预定义的值。例如，所述预定义的值等于0，或者
或者
或者
或者
其中，
◆
等于
即将μ＝0代入
的表达式后得到的值。
◆若
则由于Δf＝2
μ·15kHz，此时用于表示
的所述公式一也可以表示为
■k
s的取值是一组预定义的值中的一个。例如，根据预定义的条件或者预配置的信息或者DCI的指示或者MAC CE的指示或者RRC信令的指示或者RRC参数的配置确定k
s的取值。
例如，当所述预定义的条件不满足时，k
s不存在或者等于所述一组预定义的值中的一个；当所述预定义的条件满足时，k
s等于所述一组预定义的值中的另一个。
例如，所述预定义的条件可以是下面中的一项或多项按“与”或“或”的关系所做的任意组合：
◆
为奇数；
◆参数frequencyShift7p5khz已配置。
◆所述除PRACH外的其他物理信道或信号的OFDM基带信号所对应的载波在SUL频段，或者频段n1、n2、n3、n5、n7、n8、n20、n28、n66、n71中的一个上。
◆针对相应载波的子载波间隔配置(如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置)中存在μ＝0的配置。
例如，所述一组预定义的值中可以包含0，
和
中的一个或多个。
■
其中，
等于
即将μ＝μ
1代入
的表达式后得到的值。
例如，μ
1可以等于针对相应载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
■
其中，
等于
即将μ＝μ
1代入
的表达式后得到的值。
例如，μ
1可以等于针对相应载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
●可选地，k
s是否存在可以通过DCI、MAC CE或RRC信令指示，或者通过RRC参数的配置确定。
本发明的实施例一中，所述除PRACH外的其他物理信道或信号可以包括：PUSCH、PUCCH、SRS、PT-RS、DM-RS、CSI-RS、PSS、SSS、PDSCH、PDCCH、PBCH等。
根据本发明的实施例一的上述方法，改进了现有的3GPP关于5G的标准规范中上行载波频率偏移的方式，能够使得NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
[实施例二]
图3是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。
在本发明的实施例二中，用户设备UE执行的步骤包括：
在步骤201，获取与PRACH的OFDM基带信号的生成有关的参数的配置信息。例如，从基站获取以下参数的配置信息中的一个或者多个：
●上行BWP的配置。例如，所述上行BWP的子载波间隔配置为μ(对应的子载波间隔为Δf)，最低编号的资源块(使用公共资源块编号)为
●随机接入配置。例如，对于频率范围1(frequency range 1，FR1)中的配对频谱(paired spectrum)，若PRACH配置索引(PRACH Configuration Index，例如通过高层参数prach-ConfigurationIndex进行配置)是87，则前导格式(Preamble format)为A1，起始符号(Starting symbol)为0，子帧内的PRACH时隙个数(Number of PRACH slots within a subframe)为1，PRACH时隙内的时域PRACH机会个数(number of time-domain PRACH occasions within a PRACH slot，
)为6，PRACH时长(PRACH duration，
)为2。
●产生所述PRACH的OFDM基带信号所涉及的波形参数集所对应的资源栅格的配置。
例如，所述上行BWP的子载波间隔配置μ对应的资源栅格的最低 编号的公共资源块的编号是
频域资源块个数为
所述
和
可以分别通过μ所对应的SCS-SpecificCarrier IE中的参数offsetToCarrier和参数carrierBandwidth分别进行配置。又如，参考子载波间隔配置μ
0对应的资源栅格的最低编号的公共资源块的编号是
频域资源块个数为
其中，所述参考子载波间隔配置μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置中的最大值。所述
和
可以分别通过μ
0所对应的SCS-SpecificCarrier IE中的参数offsetToCarrier和参数carrierBandwidth分别进行配置。
●频域上最低PRACH传输机会(transmission occasion)的配置。例如，频域上最低PRACH传输机会相对于上行BWP的最低编号的资源块的偏移(以资源块个数表示)为
例如通过高层参数msgl-FrequencyStart进行配置。
●一个给定的时刻(time instance)进行频分复用(frequency-division multiplexing，FDM)的PRACH传输机会(transmission occasion)的个数。例如，一个给定的时刻进行频分复用的PRACH传输机会的个数为M，例如通过高层参数msgl-FDM进行配置；相应地，所述PRACH的OFDM基带信号所使用的频域上的PRACH传输机会的索引n
RA的取值集合可以是{0，1，...，M-1}。
在步骤203，根据所述与PRACH的OFDM基带信号的生成有关的参数的配置信息，生成所述PRACH的OFDM基带信号。例如，所述PRACH的OFDM基带信号可以用时间连续信号(time-continuous signal)
表示为
其中，
●p是天线端口。
●对于初始接入，μ是初始有效上行BWP的子载波间隔配置，Δf是其对应的子载波间隔，见表1。对于非初始接入，μ是有效上行BWP的子载波间隔配置，Δf是其对应的子载波间隔，见表1。
●K＝Δf/Δf
RA。
●
●
●μ
0是针对相应载波的子载波间隔配置中的最大值，如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置中的最大值。
●对于初始接入，
是初始有效上行BWP的最低编号的资源块。对于非初始接入，
是有效上行BWP的最低编号的资源块。
●对于初始接入，
是频域上最低PRACH传输机会(transmission occasion)所占用的最低编号的资源块相对于初始有效上行BWP的最低编号的资源块(即物理资源块0)的偏移(以资源块个数表示)。对于非初始接入，
是频域上最低PRACH传输机会(transmission occasion)所占用的最低编号的资源块相对于有效上行BWP的最低编号的资源块(即物理资源块0)的偏移(以资源块个数表示)。
●n
RA是所述PRACH的OFDM基带信号所使用的频域上的PRACH传输机会的索引。所述PRACH的OFDM基带信号所描述的一次 PRACH传输对应一个频域上的PRACH传输机会(由n
RA描述)和一个时域上的PRACH传输机会(由
描述)。
●
是每个频域上的PRACH传输机会所占用的资源块的个数。对于初始接入，以初始有效上行BWP上的PUSCH(Physical uplink shared channel，物理上行共享信道)资源块个数的方式表示；对于非初始接入，以有效上行BWP上的PUSCH资源块个数的方式表示。
●
●
其中，对于Δf
RA∈{1.25，5}kHz，n＝0；对于Δf
RA∈{15，30，60，120}kHz，n是区间
和一个子帧中的时刻0或时刻
重叠的次数。
●对于Δf
RA∈{1.25，5，15，30}kHz，
是PRACH前导(preamble)在一个子帧内的起始位置；对于Δf
RA∈{60，120}kHz，
是PRACH前导在一个60kHz时隙内的起始位置。
对l＝0，
对l≠0，
其中，
■假定所述子帧或60kHz时隙起始于t＝0。
■假定时间提前量N
TA＝0。
■对
和
的解释与对相应的量在除PRACH(Physical random-access channel，物理随机接入信道)外的其他物理信道或信号的OFDM基带信号生成公式中的解释一样。
■对于Δf
RA∈{1.25，5}kHz，假定μ＝0；在其他情况下μ取由Δf
RA∈{15，30，60，120}kHz所对应的μ值，见表1。
■
其中，
◆l
0来自随机接入配置中的“起始符号”(starting symbol)。例如，若PRACH配置索引(PRACH configuration index)为0，则起始符号为0。
◆
是PRACH时隙内的PRACH传输机会(transmission occasion)，其编号为
其中，对L
RA＝839，
对L
RA＝139，
来自随机接入配置中的“PRACH时隙内的时域PRACH机会个数”(number of time-domain PRACH occasions within a PRACH slot)。
◆
来自随机接入配置中的“PRACH时长”(PRACH duration)。
◆对于Δf
RA∈{1.25，5，15，60}kHz，
◆对于Δf
RA∈{30，120}kHz，且随机接入配置中的“子帧内的PRACH时隙个数”(Number of PRACH slots within a subframe)或者“60kHz时隙内的PRACH时隙个数”(Number of PRACH slots within a 60kHz slot)等于1，则
◆其他情况下，
●L
RA、Δf
RA、N
u和
取决于PRACH前导的格式。例如，对于格式0，L
RA＝839、Δf
RA＝1.25kHz、N
u＝24576k，
●
和
取决于L
RA、Δf
RA、Δf的组合。例如，对于L
RA＝839，Δf
RA＝1.25kHz和Δf＝15kHz，
●若随机接入配置中的PRACH前导格式为A1/B1，A2/B2或者A3/B3，则
■若
则在所述PRACH传输机会中传输相应的B1，B2或者B3格式的PRACH前导。
■否则在所述PRACH传输机会中传输相应的A1，A2或者A3格式的PRACH前导。
●k
s是一个对频率偏移进行修正的修正参数，单位可以是kHz。k
s的取值可以是下面中的一种：
■k
s等于一个预定义的值。例如，所述预定义的值等于0，或者
或者
或者
或者
其中，
等于
即将μ＝0代入
的表达式后得到的值。
■k
s的取值是一组预定义的值中的一个。例如，根据预定义的条件或者预配置的信息或者DCI的指示或者MAC CE的指示或者RRC信令的指示或者RRC参数的配置确定k
s的取值。
例如，当所述预定义的条件不满足时，k
s不存在或者等于所述一组预定义的值中的一个；当所述预定义的条件满足时，k
s等于所述一组预定义的值中的另一个。
例如，所述预定义的条件可以是下面中的一项或多项按“与”或“或”的关系所做的任意组合：
◆
为奇数；
◆参数frequencyShift7p5khz已配置。
◆所述PRACH的OFDM基带信号所对应的载波在SUL频段，或者频段n1、n2、n3、n5、n7、n8、n20、n28、n66、n71中的一个上。
◆针对相应载波的子载波间隔配置(如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置)中存在μ＝0的配置。
例如，所述一组预定义的值中可以包含0，
和
中的一个或多个。
■
其中，
等于
即将μ＝μ
1代入
的表达式后得到的值。
例如，μ
1可以等于针对相应载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
■
其中，
等于
即将μ＝μ
1代入
的表达式后得到的值。
例如，μ
1可以等于针对相应载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
●可选地，k
s是否存在可以通过DCI、MAC CE或RRC信令指示，或者通过RRC参数的配置确定。
根据上述实施例二中的方法，与实施例一一样，能够使得NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
[实施例三]
图4是示出了根据本发明的实施例三的由用户设备执行的方法的流程图。
在本发明的实施例三中，用户设备UE执行的步骤包括：
在步骤301，获取与上行载波或补充上行载波配置有关的参数的配置信息。例如，从基站获取所述参数的配置信息。所述参数包括：
●对上行传输进行7.5kHz频率偏移的指示，例如通过参数frequencyShift7p5khz进行配置。
在步骤302，根据所述与上行载波或补充上行载波配置有关的参数的配置信息，确定所述上行载波或补充上行载波的RF参考频率的偏移量Δ
shift。
例如，Δ
shift＝S
1+S
2。其中，
●若参数frequencyShift7p5khz未配置，则S
1＝0kHz；若参数frequencyShift7p5khz已配置，则S
1＝7.5kHz。
●S
2是一个对频率偏移进行修正的修正参数，单位可以是kHz。S
2的取值可以是下面中的一种：
■S
2等于一个预定义的值。例如，所述预定义的值等于0，或者
或者
或者
或者
其中，
等于
即将μ＝0代入
的表达式后得到的值。
■S
2的取值是一组预定义的值中的一个。例如，根据预定义的条件或者预配置的信息或者DCI的指示或者MAC CE的指示或 者RRC信令的指示或者RRC参数的配置确定S
2的取值。
例如，当所述预定义的条件不满足时，S
2不存在或者等于所述一组预定义的值中的一个；当所述预定义的条件满足时，S
2等于所述一组预定义的值中的另一个。
例如，所述预定义的条件可以是下面中的一项或多项按“与”或“或”的关系所做的任意组合：
◆
为奇数；
◆参数frequencyShift7p5khz已配置。
◆所述上行载波或补充上行载波在SUL频段，或者频段n1、n2、n3、n5、n7、n8、n20、n28、n66、n71中的一个上。
◆针对所述上行载波或补充上行载波的子载波间隔配置(如高层参数scsSpecificCarrierList中配置的所有子载波间隔配置)中存在μ＝0的配置。
例如，所述一组预定义的值中可以包含0，
和
中的一个或多个。
■
其中，
等于
即将μ＝μ
1代入
的表达式后得到的值。
例如，μ
1可以等于针对所述上行载波或补充上行载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
■
其中，
等于
即将μ＝μ
1代 入
的表达式后得到的值。
例如，μ
1可以等于针对所述上行载波或补充上行载波的子载波间隔配置(如高层参数scs-SpecificCarrierList中配置的所有子载波间隔配置)中按照预定义的规则选出的一个值，例如最小值。
●可选地，S
2是否存在可以通过DCI、MAC CE或RRC信令指示，或者通过RRC参数的配置确定。
其中，在一些实施方式中，对等式Δ
shift＝S
1+S
2中的S
1和S
2的描述可以进行合并，例如，若参数frequencyShift7p5khz未配置，则Δ
shift＝0kHz(例如，当S
1＝0kHz，且S
2＝0kHz)；若参数frequencyShift7p5khz已配置，则
(例如，当S
1＝7.5kHz，且
)。
其中
和
的定义与实施例一中相同，在此省略重复说明。
在步骤303，对所述RF参考频率应用偏移量Δ
shift，例如：
F
REF_shift＝F
REF+Δ
shift
可选地，本发明实施例三仅应用于SUL频段，以及频段n1、n2、n3、n5、n7、n8、n20、n28、n66、n71。
根据上述实施例三中的方法，与实施例一一样，能够使得NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
[实施例四]
图5是示出了根据本发明的实施例四的由用户设备执行的方法的流程图。
在本发明的实施例四中，用户设备UE执行的步骤包括：
在步骤401，获取与上行载波或补充上行载波配置有关的参数的配置 信息。例如，从基站获取所述参数的配置信息。所述参数包括：
●对上行传输进行7.5kHz频率偏移的指示，例如通过参数frequencyShift7p5khz进行配置。
●针对所述上行载波或补充上行载波的所有子载波间隔配置及每个子载波间隔配置所对应的资源栅格配置，例如通过参数scs-SpecificCarrierList进行配置。
其中，所述与上行载波或补充上行载波配置有关的参数的配置信息满足下面的限制中的一个或多个：
●若参数scs-SpecificCarrierList中包含和μ＝0相关的配置，则μ＝0所对应的资源栅格的频域资源块个数(
例如通过μ＝0所对应的SCS-SpecificCarrier IE中的参数carrierBandwidth进行配置)必须是偶数。
●若参数frequencyShift7p5khz已配置，且参数scs-SpecificCarrierList中包含和μ＝0相关的配置，则μ＝0所对应的资源栅格的频域资源块个数(
例如通过μ＝0所对应的SCS-SpecificCarrier IE中的参数carrierBandwidth进行配置)必须是偶数。
在步骤402，根据所述与上行载波或补充上行载波配置有关的参数的配置信息，确定所述上行载波或补充上行载波的RF参考频率的偏移量Δ
shift。
例如，若参数frequencyShift7p5khz未配置，则Δ
shift＝0kHz；若参数frequencyShift7p5khz已配置，则Δ
shift＝7.5kHz。
在步骤403，对所述RF参考频率应用偏移量Δ
shift，例如：
F
REF_shift＝F
REF+Δ
shift
可选地，本发明实施例四仅应用于SUL频段，以及频段n1、n2、n3、 n5、n7、n8、n20、n28、n66、n71。
根据上述实施例四中的方法，能够使得在系统允许的参数配置范围内，NR和LTE实现资源块对齐，从而能够实现NR和LTE之间的高效动态时频资源共享。
图6是表示本发明所涉及的用户设备UE的框图。如图6所示，该用户设备UE60包括处理器601和存储器602。处理器601例如可以包括微处理器、微控制器、嵌入式处理器等。存储器602例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器602上存储有程序指令。该指令在由处理器601运行时，可以执行本发明详细描述的由用户设备执行的上述方法。
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的，而且以上说明的各实施例在不发生矛盾的情况下能够相互组合。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”可以指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”可以指用户移动终端，例如包括移动电话、笔记本等可以与 基站或者微基站进行无线通信的终端设备。
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
此外，上述每个实施例中所使用的基站设备和终端设备的每个功能模块或各个特征可以由电路实现或执行，所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器，或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置，或者可以由逻辑电路配置。此外，当由于半导体技术的进步，出现了能够替代目前的集成电路的先进技术时，本发明也可以使用利用该先进技术得到的集成电路。
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。
Claims (10)
- 一种由用户设备执行的方法，包括：获取与物理信道或信号的正交频分复用OFDM基带信号的生成有关的参数的配置信息；以及根据获取的所述参数的配置信息，生成所述物理信道或信号的OFDM基带信号，在生成所述物理信道或信号的OFDM基带信号时，利用了对频率偏移进行修正的修正参数。
- 根据权利要求1所述的方法，其特征在于，所述物理信道或信号是物理随机接入信道PRACH或者除PRACH外的其他物理信道或信号。
- 一种由用户设备执行的方法，包括：获取与上行载波或补充上行载波的配置有关的参数的配置信息；根据获取的所述参数的配置信息，确定所述上行载波或补充上行载波的射频RF参考频率的偏移量；以及对所述RF参考频率应用所述偏移量，在确定所述偏移量时，利用了对频率偏移进行修正的修正参数。
- 根据权利要求1或3所述的方法，其特征在于，所述修正参数的取值是预定义的值，或者，所述修正参数的取值是或
其中，等于与子载波间隔配置μ有关的频率偏移项
中μ为μ 1时所对应的值，μ 1等于针对相应载波的子载波间隔配置中按照预定义的规则选出的一个值。
- 根据权利要求4所述的方法，其特征在于，所述频率偏移项由下式计算：
其中，和
分别是子载波间隔配置μ对应的资源栅格的最低编号的公共资源块的编号、频率资源块个数；
和
分别是参考子载波间隔配置μ 0对应的资源栅格的最低编号的公共资源块的编号、频率资源块个数；
是一个资源块中的子载波个数。
- 根据权利要求1或3所述的方法，其特征在于，所述修正参数在给定条件不满足时是第一常量，在给定条件满足时是与第一常量不同的第二常量。
- 根据权利要求6所述的方法，其特征在于，所述给定条件包括下述条件中的至少一个：资源栅格的频率资源块个数为奇数；
对上行传输进行7.5kHz频率偏移的指示参数已配置；所述物理信道或信号的OFDM基带信号的对应载波、或者所述上行载波或补充上行载波在SUL、n1、n2、n3、n5、n7、n8、n20、n28、n66、n71中的任一个频段上；针对所述对应载波、或者所述上行载波或补充上行载波的子载波间隔配置中存在μ＝0的配置。 - 根据权利要求3所述的方法，其特征在于，获取的所述参数中包括对上行传输进行7.5kHz频率偏移的指示参数。
- 根据权利要求8所述的方法，其特征在于，所述RF参考频率的偏移量Δ shift由Δ shift＝S 1+S 2表示，其中，S 1在所述指示参数未配置时是0kHz，在所述指示参数已配置时是7.5kHz；S 2是所述修正参数。
- 一种用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行根据权利要求1至9中任一项所述的方法。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145155.9 | 2018-09-28 | ||
| CN201811145155.9A CN110971553A (zh) | 2018-09-28 | 2018-09-28 | 由用户设备执行的方法以及用户设备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020063478A1 true WO2020063478A1 (zh) | 2020-04-02 |
Family
ID=69951184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/107027 WO2020063478A1 (zh) | 2018-09-28 | 2019-09-20 | 由用户设备执行的方法以及用户设备 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110971553A (zh) |
| WO (1) | WO2020063478A1 (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114598433A (zh) * | 2020-12-07 | 2022-06-07 | 维沃移动通信有限公司 | Ro的时域资源配置方法、装置及电子设备 |
| CN114553382B (zh) * | 2022-02-24 | 2023-08-01 | 中电科思仪科技股份有限公司 | 一种自动配置公共参数的5g nr信号解调方法及系统 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018127074A1 (en) * | 2017-01-05 | 2018-07-12 | Huawei Technologies Co., Ltd. | Signal indication for flexible new radio (nr) long term evolution (lte) coexistence |
-
2018
- 2018-09-28 CN CN201811145155.9A patent/CN110971553A/zh active Pending
-
2019
- 2019-09-20 WO PCT/CN2019/107027 patent/WO2020063478A1/zh active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018127074A1 (en) * | 2017-01-05 | 2018-07-12 | Huawei Technologies Co., Ltd. | Signal indication for flexible new radio (nr) long term evolution (lte) coexistence |
Non-Patent Citations (3)
| Title |
|---|
| HUAWEI ET AL.: "On Coexistence between LTE and NR", 3GPP TSG RAN WGI MEETING #92BIS R1-1804285, 20 April 2018 (2018-04-20), XP051413854 * |
| SHARP: "RB Alignment with LTE in Case of 7.5 kHz Frequency Shift for a NR UL Carrier", 3GPP TSG RAN WGI MEETING #94BIS R1-1811146, 12 October 2018 (2018-10-12), XP051518547 * |
| ZTE: "Considerations of NR-LTE Coexistence in Uplink", 3GPP TSG RAN WGI MEETING NR AD-HOC#2 R1-1711701, 30 June 2017 (2017-06-30), XP051305928 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110971553A (zh) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10305645B2 (en) | Frame structure for filter bank multi-carrier (FBMC) waveforms | |
| TWI737783B (zh) | 彈性資源使用方法 | |
| TWI765931B (zh) | 傳輸資訊的方法、終端設備和網路設備 | |
| WO2020029863A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2020147775A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| US20150071203A1 (en) | Wireless equipment for transmitting uplink signal through reduced transmission resource block and power, and enodeb | |
| WO2020135417A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2018127157A1 (zh) | 一种上行信号发送方法、接收方法、终端及基站 | |
| WO2020164452A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2020221241A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2018059481A1 (zh) | 数据发送、接收方法及装置 | |
| WO2020164639A1 (zh) | 一种随机接入方法、设备及系统 | |
| TW201818747A (zh) | 用於傳輸上行訊號的方法和裝置 | |
| TW201843953A (zh) | 行動通訊之追蹤參考信號及其框架設定方法及其裝置 | |
| WO2017070962A1 (zh) | 指示资源的方法、基站和终端 | |
| WO2020063479A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2020063478A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| JP2019530993A (ja) | データ伝送方法、ネットワーク装置及び端末装置 | |
| US12035357B2 (en) | Method executed by user equipment and user equipment | |
| RU2776353C1 (ru) | Способ, выполняемый оборудованием пользователя, и оборудование пользователя | |
| WO2022152160A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| WO2023078394A1 (zh) | 由用户设备执行的方法以及用户设备 | |
| CN116250323A (zh) | 一种通信方法及装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19866973 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19866973 Country of ref document: EP Kind code of ref document: A1 |