CN111585733B

CN111585733B - Method and device for determining quantity of resource elements for data transmission

Info

Publication number: CN111585733B
Application number: CN201910118865.0A
Authority: CN
Inventors: 张永平; 冯淑兰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2022-12-06
Anticipated expiration: 2039-02-15
Also published as: WO2020164483A1; CN111585733A

Abstract

The application provides a method and a device for determining the number of resource elements for data transmission. The method for determining the number of the resource elements for data transmission comprises the following steps: acquiring first indication information; determining time domain symbols and frequency domain resources for transmitting data according to the first indication information; determining whether the reference signal and the data can be simultaneously processed when the reference signal for channel measurement exists on the time domain symbol; if the reference signal and the data cannot be processed simultaneously, calculating a first RE number according to the first indication information, wherein the first RE number is the number of REs used for data included in each PRB in the current processing period, and the first RE number does not include the number of REs used for the reference signal. The method and the device avoid the situation that the physical resources which cannot be used by the UE are mistakenly used as the resources which can be used for sending the UE data, improve the accuracy of the TBS and improve the processing performance of the UE.

Description

Method and device for determining quantity of resource elements for data transmission

Technical Field

The present application relates to communications technologies, and in particular, to a method and an apparatus for determining a number of resource elements for data transmission.

Background

In a wireless network, a Transmission Reception Point (TRP) processes, e.g., modulates and encodes, higher layer data before transmitting physical layer data, so that the processed data is adapted to the conditions of a physical channel. Since the physical resources that can be used each time are limited, it is first necessary to determine the data amount that can be actually transmitted according to the scheduling result (time-frequency resource allocation, modulation and Coding Scheme (MCS)) parameters, etc.), and the data amount is the Transport Block Size (TBS). Then, the TRP segments the data of the corresponding bit from the buffer according to the TBS, performs processing such as modulation and coding, and then puts the data on the physical resource determined by the scheduling result and sends the data to the User Equipment (UE).

The process of determining TBS in the New Radio (NR) protocol includes an important step: determining a total number of REs for a Physical Downlink Shared Channel (PDSCH)/Physical Uplink Shared Channel (PUSCH), and specifically, first determining a number of Resource Elements (REs) for the PDSCH/PUSCH within one Physical Resource Block (PRB), the number of REs excluding a number of REs for a Demodulation Reference Signal (DMRS) in each PRB and a number of REs indicated by a higher layer, and then determining a scheduled total number of REs for the PDSCH/PUSCH.

However, in the above process of determining the physical resources for PDSCH/PUSCH, there is a high possibility that a large number of physical resources that cannot be used by the UE are mistaken as resources that can be used for UE data transmission, thereby seriously affecting the reception performance of the UE.

Disclosure of Invention

The application provides a method and a device for determining the number of resource elements for data transmission, so as to avoid the situation that physical resources which cannot be used by UE are mistakenly used as resources which can be used for UE data transmission, improve the accuracy of TBS, and improve the processing performance of UE.

In a first aspect, the present application provides a method for determining a number of resource elements for data transmission, including: acquiring first indication information; determining time domain symbols and frequency domain resources used for transmitting data according to the first indication information; determining whether the reference signal and the data can be simultaneously processed when the reference signal for channel measurement exists on the time domain symbol; if the reference signal and the data cannot be processed simultaneously, calculating a first Resource Element (RE) number according to the first indication information, wherein the first RE number is the RE number used for the data and included in each Physical Resource Block (PRB) in the current processing period, and the first RE number does not include the RE number used for the reference signal; or, if the reference signal and the data can be processed simultaneously, calculating a second RE number according to the first indication information, where the second RE number is a number of REs used for the data included in each PRB in a current processing period, and the second RE number includes a number of REs used for the reference signal.

In a second aspect, the present application provides a method for determining the number of resource elements for data transmission, including: receiving first indication information; determining time domain symbols and frequency domain resources allocated to a shared channel by network equipment according to the first indication information; determining whether the reference signal and the shared channel can be simultaneously processed when one or more of the time domain symbols are occupied with a reference signal for channel measurement; if the reference signal and the shared channel cannot be processed simultaneously, calculating a first Resource Element (RE) number according to the first indication information, wherein the first RE number is the RE number used for the shared channel and included in each Physical Resource Block (PRB) in the current processing period, and the first RE number is determined according to the number of the time domain symbols in each physical resource block, the number of the time domain symbols occupied by the reference signal in the time domain symbols in each physical resource block, the number of subcarriers in each physical resource block, and the number of REs used for demodulating a reference signal (DMRS) on the time domain symbols in each physical resource block; and/or if the reference signal and the data can be processed simultaneously, calculating a second RE number according to the resource grant indication information, where the second RE number is a number of REs included in each PRB in the current processing cycle and used for the shared channel, and the second RE number is determined according to the number of time domain symbols in each physical resource block, the number of subcarriers in each physical resource block, and the number of REs used for demodulation of a reference signal DMRS on the time domain symbols in each physical resource block.

In the first aspect or the second aspect, after the UE acquires the first indication information, time-frequency resources occupied by reference signals that cannot be processed simultaneously with data are removed from the time-frequency resources indicated by the first indication information, so that a situation that physical resources that cannot be used by the UE are mistakenly used as resources that can be used for UE data transmission is avoided, the accuracy of the TBS is improved, and the processing performance of the UE is improved. Or after the UE acquires the first indication information, it is not necessary to remove time-frequency resources occupied by reference signals that can be processed simultaneously with data from the time-frequency resources indicated by the first indication information, so that the accuracy and the utilization rate of the TBS are improved, and the processing performance of the UE is improved.

In a possible implementation manner of the first aspect or the second aspect, when the data is a physical downlink shared channel PDSCH, the determining whether the reference signal and the data can be processed simultaneously includes: and judging whether a first judgment condition is met, and determining whether the reference signal and the PDSCH can be received simultaneously according to a judgment result.

In a possible implementation manner of the first aspect or the second aspect, when the received frequency band is a first frequency band, the first determination condition includes: the reference signal is a Synchronization Signal Block (SSB), the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH which simultaneously receive different subcarrier intervals are not supported.

In a possible implementation manner of the first aspect or the second aspect, the determining whether the reference signal and the PDSCH can be received simultaneously according to the determination result includes: determining that the reference signal and the PDSCH may not be received simultaneously if the first determination condition is satisfied.

In a possible implementation manner of the first aspect or the second aspect, when the received frequency band is a second frequency band, the first determination condition includes: (1) The reference signal indicates that a TCI state does not maintain a quasi-co-located QCL relationship with an active transmit configuration of the PDSCH; or, (2) receive beam scanning based on the reference signal is required; or, (3) the reference signal is an SSB, the SSB and the PDSCH have different subcarrier spacings and do not support simultaneous reception of the SSB and PDSCH of different subcarrier spacings.

In a possible implementation manner of the first aspect or the second aspect, the determining whether the reference signal and the PDSCH can be received simultaneously according to the determination result includes: when the reference signal is an SSB or a CSI-RS, determining that the reference signal and the PDSCH cannot be received simultaneously if the first determination condition is satisfied; or when the reference signal is an SSB, if the first determination condition is satisfied, determining that the reference signal and the PDSCH cannot be received simultaneously, and when the reference signal is a CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH can be received simultaneously; or when the reference signal is an SSB or a periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is a semi-persistent CSI-RS or a non-periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously; or when the reference signal is an SSB, a periodic CSI-RS, or a semi-persistent CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is an aperiodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously.

In a possible implementation manner of the first aspect or the second aspect, the calculating the first RE number according to the first indication information includes: calculating the first number of REs according to equation (1):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

represents the number of time domain symbols for the PDSCH in the current processing cycle determined according to the first indication information,

represents a number of time domain symbols for the reference signal in the time domain symbols,

represents the number of REs used for a demodulation reference signal (DMRS) in the time domain symbol,

a value indicated for higher layers.

In a possible implementation manner of the first aspect or the second aspect, when the data is a PDSCH, the determining whether the reference signal and the data can be processed simultaneously includes: and judging whether a second judgment condition is met, and if the second judgment condition is met, determining that the reference signal and the PDSCH can be received simultaneously.

In a possible implementation manner of the first aspect or the second aspect, when the received frequency band is a first frequency band, the second determining condition includes: (1) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH with different subcarrier intervals are supported to be received simultaneously; or, (2) the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

In a possible implementation manner of the first aspect or the second aspect, when the received frequency band is a second frequency band, the second determining condition includes: (1) The reference signal maintains a QCL relationship with an activated TCI state of the PDSCH; and, (2) no receive beam scanning is required based on the reference signal; and, (3) the reference signal is an SSB, the SSB having a different subcarrier spacing from the PDSCH and supporting simultaneous reception of SSBs and PDSCH of different subcarrier spacing; or the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

In a possible implementation manner of the first aspect or the second aspect, the calculating the second RE number according to the first indication information includes: calculating the second RE number according to equation (2):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

represents the number of REs for DMRS in the time domain symbol,

a value indicated for higher layers.

In a possible implementation manner of the first aspect or the second aspect, the method further includes: when the reference signal does not exist on the time domain symbol, calculating a second RE number according to the first indication information, where the second RE number is the number of REs for the data included in each PRB in the current processing period, and the second RE number includes the number of REs for the reference signal.

In a third aspect, the present application provides a method for determining the number of resource elements for data transmission, including: determining whether a reference signal for channel measurement exists on a time domain symbol included in a current processing period; and if the reference signal exists on the frequency domain resource, processing data and/or the reference signal according to the processing capacity of the User Equipment (UE).

In a third aspect, the TRP of the present application reduces the influence of the reference signal on data in the TBS determination process, improves the accuracy of the TBS, and improves the processing performance of the UE by not configuring the SSB or CSI-RS that cannot be received simultaneously with the PDSCH on the time domain symbol of the PDSCH.

In a possible implementation manner of the third aspect, when the data is a physical downlink shared channel PDSCH, the processing data and/or the reference signal according to the processing capability of the UE includes: transmitting the PDSCH and the reference signal using a transmit beam corresponding to a receive beam of the PDSCH and the reference signal without configuring the UE to perform receive beam scanning based on the reference signal; when the UE does not support simultaneous reception of the SSB and the PDSCH of the synchronization signal blocks with different subcarrier intervals, the reference signal and the PDSCH are transmitted by adopting the same subcarrier interval; and when the UE supports the simultaneous reception of the SSB and the PDSCH with different subcarrier intervals, the SSB and the PDSCH are transmitted by adopting the same or different subcarrier intervals.

In a possible implementation manner of the third aspect, when the data is a PDSCH, the transmitting the PDSCH and/or the reference signal according to the processing capability of the UE includes: if the reference signal and the PDSCH cannot be received by the UE at the same time, the reference signal is not included in the frequency domain resources, and only the PDSCH is sent, or the reference signal is only sent without including the PDSCH in the frequency domain resources.

In a possible implementation manner of the third aspect, the transmitting only the PDSCH without including the reference signal on the frequency domain resources includes: and when the reference signal is a channel state information reference signal (CSI-RS), the CSI-RS is not included in the frequency domain resource, and only the PDSCH is sent.

In a possible implementation manner of the third aspect, the transmitting only the reference signal without including the PDSCH on the frequency domain resources includes: when the reference signal is an SSB, the PDSCH is not included in the frequency domain resources, and only the SSB is sent; or, when the reference signal is an SSB and a CSI-RS, the PDSCH is not included on the frequency domain resource, and only the SSB and the CSI-RS are transmitted.

In a fourth aspect, the present application provides an apparatus for determining the number of resource elements for data transmission, where the apparatus may be a terminal device or a chip in the terminal device. The apparatus may include a processing unit and a transceiver unit. When the apparatus is a terminal device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the terminal device may further include a storage unit, which may be a memory; the storage unit is used for storing instructions, and the processing unit executes the instructions stored in the storage unit, so that the terminal device executes the corresponding functions in the first or second aspect. When the apparatus is a chip in a terminal device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, a circuit, or the like; the processing unit executes instructions stored in a storage unit (e.g., a register, a cache, etc.) within the chip, or a storage unit (e.g., a read-only memory, a random access memory, etc.) external to the chip within the terminal device, so as to enable the terminal device to perform the corresponding functions in the first or second aspects.

In a fifth aspect, the present application provides an apparatus for determining the number of resource elements for data transmission, where the apparatus may be a network device or a chip within the network device. The apparatus may include a processing unit and a transceiver unit. When the apparatus is a network device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the network device may further include a storage unit, which may be a memory; the storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so as to enable the network device to perform corresponding functions in the third aspect. When the apparatus is a chip in a network device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin, a circuit, or the like; the processing unit executes instructions stored in a storage unit (e.g., a register, a cache, etc.) within the chip, or a storage unit (e.g., a read-only memory, a random access memory, etc.) external to the chip within the network device, so as to cause the network device to perform the corresponding functions in the third aspect.

In a sixth aspect, the present application provides a communication device comprising: one or more processors; a memory for storing one or more programs; when executed by the one or more processors, cause the communications device to implement the method as described in any of the first to third aspects above.

In a seventh aspect, the present application provides a computer-readable storage medium storing instructions for performing the method of any one of the first to third aspects when the instructions are run on a communication device.

In an eighth aspect, the present application provides a computer program for performing the method of any one of the first to third aspects when executed by a communication device.

Drawings

FIG. 1 is a schematic diagram of the structure of SSB;

FIG. 2 is a schematic diagram of a single port CSI-RS resource;

FIG. 3 is a schematic diagram of a transmit beam and receive beam set beam pair;

fig. 4 is a diagram of resource locations of PDSCH and SSB;

fig. 5 is a schematic structural diagram of a communication system to which the method for determining the number of resource elements for data transmission according to the present application is applied;

fig. 6 is a flowchart of a first embodiment of a method for determining the number of resource elements for data transmission according to the present application;

fig. 7 is a flowchart of a second embodiment of a method for determining the number of resource elements for data transmission according to the present application;

fig. 8 is a flowchart of a third embodiment of a method for determining the number of resource elements for data transmission according to the present application;

fig. 9 is a schematic diagram of scheduling of PDSCH and reference signals;

fig. 10 is another scheduling diagram of PDSCH and reference signals;

figure 11 is yet another scheduling diagram of PDSCH and reference signals;

fig. 12 is a schematic structural diagram of a first embodiment of an apparatus for determining the number of resource elements for data transmission according to the present application;

fig. 13 is a schematic structural diagram of a second embodiment of a device for determining the number of resource elements for data transmission according to the present application;

fig. 14 is a schematic structural diagram of an embodiment of the communication device of the present application.

Detailed Description

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Regarding signal measurement: the Reference-Signal Received Power (RSRP) of the support layer 1 in the NR is called L1-RSRP. The RSRP reflects the strength of the UE-side received signal, and is an important reporting parameter, which is introduced during 4G Long-term Evolution (LTE) and is used as a part of the measurement and reporting of Radio-Resource Management (RRM). In higher layer RRM, RSRP reporting adds extra long-term filtering called layer three filtering, while L1-RSRP measures the instantaneous received signal strength and thus there is no extra long-term filtering. L1-RSRP reporting in NR may be based on a Synchronization Signal Block (SSB), where the SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH), and the structure of the SSB may occupy 4 Orthogonal Frequency-Division Multiplexing (OFDM) symbols in a time domain and 240 subcarriers in a Frequency domain as shown in fig. 1, where the PSS occupies 127 subcarriers. L1-RSRP reporting may also be based on a Channel State Information-Reference Signal (CSI-RS), where the TRP configures a CSI-RS Resource (CSI-RS Resource) for the UE through higher layer signaling, and fig. 2 shows an example of a single-port CSI-RS Resource, where the frequency domain density of the CSI-RS Resource is 1, that is, 1 RE is used for CSI-RS transmission in one Resource Block (RB). It should be noted that the number of ports of the CSI-RS resource, the frequency density, the position in one RB, the position in one slot (slot), and the like can all be configured through higher layer signaling.

With respect to beam scanning: since a high-frequency band is introduced into NR, the high-frequency signal propagation loss is very large, and the reception performance of the signal needs to be improved by beamforming. At the TRP end, signal energy is concentrated into a certain specific beam range through beam forming; at the UE, only signals within a certain beam range are received by beamforming. The signal receiving performance can be effectively improved in the process, and the high-frequency signal propagation loss can be resisted. After the beamforming is adopted, signals can be transmitted and received within a certain range, so that a transmitting beam of a transmitting end and a receiving beam of a receiving end appear in pairs, fig. 3 shows an example of the transmitting beam and the receiving beam, a plurality of beam pairs are arranged between the TRP and the UE, wherein signals transmitted by adopting a black transmitting beam can only be received by the black receiving beam, and signals transmitted by a grid transmitting beam can only be received by the grid receiving beam. In NR, a transceiving beam pair is determined by SSB or CSI-RS measurement L1-RSRP. That is, different transmission beams are adopted by the TRP on different SSB or CSI-RS resources to transmit SSB or CSI-RS signals, the UE receives the SSB or CSI-RS signals on the SSB or CSI-RS resources with different reception beams respectively, measures L1-RSRP of the signals, and when the measured L1-RSRP on a certain SSB or CSI-RS Resource is strongest, it indicates that the transmission beam and the corresponding reception beam on the Resource are optimal, and the UE feeds back a SSB Resource Indicator (SSBRI) or CSI-RS Resource Indicator (CSI-RS Resource Indicator, CRI) of the SSB or CSI-RS to the TRP. It should be noted that, in addition to the above L1-RSRP, NR is currently discussing beam measurement based on Layer 1signal to Interference plus Noise ratio (L1-SINR), and L1-SINR only considers the difference of signal received power and also considers the factors of Interference and Noise, unlike L1-RSRP.

Since the Beam scanning process is very time-consuming, a large number of SSB or CSI-RS resources need to be configured to complete a complete Beam scanning process at both ends of Transmission and reception, and thus the number of Beam scanning times needs to be reduced as much as possible, and in order to ensure the Transmission performance, actually, the system may maintain a plurality of Beam Pair Links (BPL), and indicate that a DMRS port of the PDSCH and a certain reference signal resource use the same receiving Beam through Transmission Configuration Indication (TCI). In the NR protocol, the TRP indicates that a DMRS port of the PDSCH maintains a Quasi Co-Location (QCL) relationship with a certain reference signal resource in a type of type, the QCL relationship of type may also be referred to as a spatial QCL relationship, and when two reference signals maintain a QCL relationship of type, the UE may receive the two reference signals using the same receive beam or receive filter. However, when the two signals are on the same symbol, for example, as shown in fig. 4, the PDSCH and the SSB are on different frequency bands of the same symbol, and if the SSB and the PDSCH are not QCL, the UE needs to receive the SSB and the PDSCH by using different receiving beams, but the UE cannot receive the SSB and the PDSCH. Another situation is that when the SSB or CSI-RS is used for receiving beam scanning of the UE, the UE needs to receive SSB or CSI-RS signals on multiple SSB or CSI-RS resources by using multiple different receiving beams, measure and compare the received power of the signals, and determine an optimal receiving beam, during which process the UE cannot actually receive the PDSCH simultaneously.

Regarding the frame structure: NR supports various subcarrier spacings: 15kHz, 30kHz, 60kHz, 120kHz and 240kHz. The OFDM symbol lengths corresponding to different subcarrier intervals are different, the smaller the subcarrier interval is, the longer the symbol duration is, the larger the subcarrier interval is, and the shorter the symbol duration is. Generally, the higher the frequency, the larger the subcarrier spacing will be used due to the larger frequency band of interest; in addition, the symbol duration is shortened, which is beneficial to some fast services.

With respect to the reception of different subcarrier spacing signals: due to the different services, it may be desirable for the UE to be able to receive data of different subcarrier spacings at the same time, which is very challenging for the UE. To avoid unnecessary complexity, the NR protocol specifies: the resources for transmitting the CSI-RS and the resources for transmitting the PDSCH on the same symbol do not use different subcarrier spacings. However, there is no limitation on the SSB and the PDSCH on the same symbol, and the resources of the SSB and the PDSCH may use different subcarrier spacings. But whether to transmit SSB and PDSCH to the UE simultaneously using different subcarrier spacings may also depend on the capability of the UE, and in NR, the UE may inform whether the TRP itself supports simultaneous reception of SSB and PDSCH of different subcarrier spacings through signaling (simultaneousxdatasb-diffnumber technology).

With respect to TBS: in a wireless network, the TRP processes, e.g., modulates and encodes, higher layer data before transmitting physical layer data so that the processed data adapts to the conditions of the physical channel. Since the physical resources that can be used each time are limited, the data amount that can be actually transmitted, that is, the TBS, needs to be determined according to the scheduling result (time-frequency resource allocation, MCS parameter, etc.). Then the TRP cuts out the data of corresponding bits from the buffer according to the TBS, and after modulation, coding and other processing, the TRP is put on the physical resource determined by the scheduling result and sent to the UE. In determining the TBS, there is an important step: determining the number of REs available for PDSCH, the process of determining the total number of REs available for PDSCH in the NR protocol comprising: and determining the number of REs for the PDSCH within one PRB, wherein the number of REs does not comprise the number of REs for the DMRS and the number of REs indicated by a higher layer in each PRB, and then determining the total number of the scheduled REs for the PDSCH. However, the above process of determining the total number of REs available for PDSCH is likely to have a large number of physical resources that cannot be used by the UE being mistaken as resources available for UE data transmission, thereby seriously affecting the reception performance of the UE.

The application provides a method for determining the number of resource elements for data transmission, which solves the problem of how to acquire the number of REs used for data in one PRB in the process of determining the total number of REs available for a PDSCH when L1-RSRP and/or L1-SINR are configured. The method comprises two ideas: one is to remove the number of REs occupied by the reference signal from the total number of REs included in one PRB on the UE side, so as to obtain the number of REs used for transmitting data in the current processing period, where the reference signal is a reference signal for channel measurement, which exists on a frequency domain resource corresponding to a time domain symbol for data and cannot be processed simultaneously with the data, and includes an SSB and/or a CSI-RS. The other is to limit the scheduling on the TRP side so that no reference signals for channel measurement that cannot be processed simultaneously with the data will appear on the time domain symbols used for data transmission.

Fig. 5 shows an example of a communication system to which the resource element quantity determining method for data transmission according to the present invention is applicable, where the communication system includes a sending end and a receiving end, the sending end may include a base Station, a wireless access point, a UE, and the like, and the receiving end may include a UE, a terminal, a Mobile Station (MS), a base Station, and the like. The transmission between the sending end and the receiving end can be transmitted by radio waves, and can also be transmitted by transmission media such as visible light, laser, infrared, optical fibers and the like. Illustratively, the transmitting end may be a TRP or a base station, and the receiving end may be a UE.

Fig. 6 is a flowchart of a first embodiment of a method for determining the number of resource elements for data transmission according to the present invention, and as shown in fig. 6, the method of the present embodiment may be executed by a receiving end in the communication system shown in fig. 5, for example, a UE. The method of the embodiment may include:

step 601, obtaining first indication information.

The first indication information is Uplink scheduling grant (UL grant) in Uplink transmission, and is Downlink Control Information (DCI) in Downlink transmission.

Step 602, determining time domain symbols and frequency domain resources for data transmission according to the first indication information.

The TRP configures time-frequency resources used in uplink data (PUSCH) or downlink data (PDSCH) transmission for the UE in the first indication information, wherein the time-frequency resources consist of two dimensions, namely time-domain symbols and frequency-domain resources. For PDSCH, the UE obtains scheduling information of PDSCH according to the received DCI, including allocation information of Time domain symbols and frequency domain resources of PDSCH, where the Time domain symbol allocation is to determine which symbols are used for PDSCH in one processing period (e.g., transmission Time Interval (TTI)), and the frequency domain resource allocation is to determine which PRBs of the Time domain symbols are used for PDSCH. The processing period may be 1 slot (slot), or one TTI, or may also be n consecutive time domain symbols, and in NR, in order to support high reliability, the same information may be repeatedly transmitted with a plurality of processing periods, for example, PDSCH of 12 consecutive symbols is scheduled with one DCI, and is repeatedly transmitted 3 times, so in the above processing process, one processing period is 4 consecutive time domain symbols.

In addition, the UE may obtain configuration parameters of the reference signal used for L1-RSRP and/or L1-SINR measurement, including a time-frequency position of the reference signal, and for the SSB, a subcarrier spacing, through detection, default configuration, downlink signaling, or other manners.

Step 603, when there is a reference signal for channel measurement on the time domain symbol, determining whether the reference signal and the data can be processed simultaneously.

In a current processing period, the UE determines whether a reference signal for L1-RSRP and/or L1-SINR measurement exists on a time domain symbol used for data transmission, where the reference signal includes an SSB and/or a CSI-RS, and if the reference signal exists, the UE needs to determine whether the UE can process the reference signal and data simultaneously. As described above, due to the factors of the received beams, the UE cannot process signals of different beams at the same time, that is, the UE in the downlink cannot receive the reference signals and the PDSCH of different received beams at the same time, and the UE in the uplink cannot transmit the PUSCH of different beams at the same time of receiving the reference signals; due to the factor of the subcarrier spacing, when the UE does not support the simultaneous processing of the reference signals and data of different subcarriers, the UE in the downlink cannot simultaneously receive the reference signals and the PDSCH of different subcarrier spacings, and the UE in the uplink cannot simultaneously transmit the PUSCH of different subcarrier spacings while receiving the reference signals.

Exemplarily, how the UE determines whether the reference signal and the data can be processed simultaneously is described by taking the PDSCH as an example. In this embodiment, the UE determines whether the first determination condition is satisfied, and determines whether the reference signal and the PDSCH can be received simultaneously according to the determination result.

FR1 frequency band: when the reception band is a first band (for example, the first band is a band less than or equal to 6 GHz), the first determination condition includes: the reference signal for L1-RSRP and/or L1-SINR measurement is SSB, the SSB has different subcarrier spacing from PDSCH, and the UE does not support simultaneous reception of SSB and PDSCH of different subcarrier spacing. If the first decision condition is satisfied, the UE may determine that the reference signal and the PDSCH may not be received simultaneously.

FR2 frequency band: when the reception frequency band is the second frequency band (for example, the second frequency band is a frequency band greater than 6 GHz), the first determination condition includes: (1) The reference signals used for L1-RSRP and/or L1-SINR measurement and the activated TCI state of the PDSCH do not keep QCL relation, namely UE needs to adopt different receiving beams to receive the reference signals and the PDSCH; or, (2) the UE needs to perform receive beam scanning based on the reference signal; or, (3) the reference signal for L1-RSRP and/or L1-SINR measurement is SSB, the SSB has a different subcarrier spacing from the PDSCH, and the UE does not support simultaneous reception of the SSB and PDSCH of different subcarrier spacing. If the first decision condition is satisfied, the UE may determine that the reference signal and the PDSCH may not be received simultaneously.

In item (2) of the first determination condition, the UE determines that the UE needs to scan the received beam based on the reference signal, and only needs to see whether the CSI-RS and the PDSCH have a clear QCL relationship, where if the UE has a clear QCL relationship, it means that the UE can only receive the CSI-RS according to the received beam corresponding to the clear QCL relationship. However, the explicit QCL relationship may be embodied by various configurations, for example, the CSI-RS (CSI-RS 1) is configured to maintain the QCL relationship with the SSB for L1-RSRP or another CQI-RS, and whether the repeated switch repetition in the configuration parameters of the CSI-RS resource set where the CSI-RS resource (CSI-RS 1) is located is not turned ON, that is, the CSI-RS resource is not located in the CSI-RS resource set where the configuration parameter repetition is "ON". Here, the CSI-RS resource set includes a plurality of CSI-RS resources, and when the parameter repetition configured in the CSI-RS resource set is "ON", the TRP transmits CSI-RS signals ON all CSI-RS resources in the CSI-RS resource set, the UE assumes that the same receiving beam can be used to receive CSI-RS signals ON all CSI-RS resources, that is, the TRP transmits CSI-RS signals ON all CSI-RS resources using the same transmitting beam, based ON the plurality of signals transmitted using the same transmitting beam, the UE may attempt to change the receiving beam, thereby determining which receiving beam is used to receive signals, and the effect is the best.

According to the type of the reference signal, the UE may further determine that the reference signal and the PDSCH may not be received simultaneously if the reference signal is an SSB or CSI-RS and the first determination condition is satisfied; or, when the reference signal is an SSB, the UE may determine that the reference signal and the PDSCH may not be received simultaneously if the first determination condition is satisfied, and when the reference signal is a CSI-RS, the UE may determine that the reference signal and the PDSCH may be received simultaneously if the first determination condition is satisfied. This is because the single-port CSI-RS only occupies one symbol, which has much less impact than the SSB; or, when the reference signal is an SSB or a periodic CSI-RS, if the first determination condition is satisfied, the UE may determine that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is a semi-persistent CSI-RS or a non-periodic CSI-RS, if the first determination condition is satisfied, the UE may determine that the reference signal and the PDSCH may be received simultaneously; or, when the reference signal is an SSB, a periodic CSI-RS, or a semi-persistent CSI-RS, the UE may determine that the reference signal and the PDSCH may not be simultaneously received if the first determination condition is satisfied, and when the reference signal is an aperiodic CSI-RS, the UE may determine that the reference signal and the PDSCH may be simultaneously received if the first determination condition is satisfied.

And step 604, if the reference signal and the data cannot be processed simultaneously, calculating the first RE number according to the first indication information.

The first number of REs is a number of REs for data included in each PRB in the current processing cycle, and the first number of REs does not include a number of REs for a reference signal. The number of REs for data included in each PRB in the current processing cycle in the present application does not include the number of REs for DMRS and the number of REs indicated by higher layers in each PRB.

If the UE cannot process the reference signal and the data simultaneously, the number of REs for the reference signal needs to be removed from the total number of REs included in one PRB in the process of determining the number of REs for the PDSCH in one PRB, so as to avoid that the processing performance of the UE is severely affected when physical resources that the UE cannot use are mistaken as resources that can be used for UE data transmission. The present embodiment may calculate the first RE number according to formula (1):

wherein the content of the first and second substances,

indicating the number of subcarriers within one PRB.

Indicating the number of time domain symbols used for the PDSCH in the current processing cycle determined according to the first indication information.

Representing the number of time domain symbols used for the reference signal in the time domain symbol.

Indicates the number of REs used for DMRS in a time domain symbol,

including the number of REs used for DMRS, as well as the number of REs without data transmission, when multi-user transmission,

is the number of REs used for DMRS of the paired UE.

For the value indicated by the higher layer, the higher layer of the UE takes one value of {0,6,12,18} indicated by parameter xOverhead in PDSCH-ServinCellConfig as the value indicated by the higher layer

In this embodiment, after the UE acquires the first indication information, the time-frequency resource occupied by the reference signal that cannot be processed simultaneously with the data is removed from the time-frequency resource indicated by the first indication information, so that a situation that the physical resource that the UE cannot use is mistaken as a resource that can be used for UE data transmission is avoided, the accuracy of the TBS is improved, and the processing performance of the UE is improved.

Fig. 7 is a flowchart of a second embodiment of the method for determining the number of resource elements for data transmission according to the present application, and as shown in fig. 7, the method according to the present embodiment may be executed by a receiving end in the communication system shown in fig. 5, for example, a UE. The method of the embodiment may include:

step 701, obtaining first indication information.

Step 702, determining time domain symbols and frequency domain resources for data transmission according to the first indication information.

Steps 701 to 702 of this embodiment are similar to steps 601 to 602 of the first embodiment of the method, and are not described again here.

Step 703, when there is a reference signal for channel measurement on a time domain symbol, determines whether the reference signal and data can be processed simultaneously.

In a current processing period, the UE determines whether a reference signal for L1-RSRP and/or L1-SINR measurement exists on a time domain symbol used for data transmission, where the reference signal includes an SSB and/or a CSI-RS, and if the reference signal exists, the UE needs to determine whether the UE can process the reference signal and data at the same time. As described above, due to the factors of the received beams, the UE cannot process signals of different beams at the same time, that is, the UE in the downlink cannot receive the reference signals and the PDSCH of different received beams at the same time, and the UE in the uplink cannot transmit the PUSCH of different beams at the same time of receiving the reference signals; due to the factor of the subcarrier spacing, when the UE does not support the simultaneous processing of the reference signals and data of different subcarriers, the UE in the downlink cannot simultaneously receive the reference signals and the PDSCH of different subcarrier spacings, and the UE in the uplink cannot simultaneously transmit the PUSCH of different subcarrier spacings while receiving the reference signals.

Exemplarily, how the UE determines whether the reference signal and the data can be simultaneously processed is illustrated by taking the PDSCH as an example. In this embodiment, the UE determines whether the second determination condition is satisfied, and if the second determination condition is satisfied, the UE determines that the reference signal and the PDSCH can be received simultaneously.

FR1 frequency band: when the reception frequency band is a first frequency band (for example, the first frequency band is a frequency band less than or equal to 6 GHz), the second determination condition includes: (1) The reference signal used for L1-RSRP and/or L1-SINR measurement is SSB, the SSB and the PDSCH have different subcarrier intervals, and the UE supports the simultaneous reception of the SSB and the PDSCH with different subcarrier intervals; or, (2) the reference signal used for L1-RSRP and/or L1-SINR measurement is SSB or CSI-RS, and the SSB or CSI-RS has the same subcarrier spacing as the PDSCH.

FR2 frequency band: when the receiving frequency band is a second frequency band (for example, the second frequency band is a frequency band greater than 6 GHz), the second determination condition includes: (1) The reference signals used for L1-RSRP and/or L1-SINR measurement and the activated TCI state of the PDSCH maintain QCL relationship, namely the UE can adopt the same receiving beam to receive the reference signals and the PDSCH; and, (2) the UE does not need to perform receive beam scanning based on the reference signal; and, (3) the reference signal for L1-RSRP and/or L1-SINR measurement is SSB, the SSB has a different subcarrier spacing from the PDSCH, and the UE supports simultaneous reception of the SSB and PDSCH of different subcarrier spacing; or the reference signal used for the L1-RSRP and/or the L1-SINR measurement is SSB or CSI-RS, and the SSB or CSI-RS and the PDSCH have the same subcarrier spacing.

Step 704, if the reference signal and the data can be processed simultaneously, calculating the second RE number according to the first indication information.

The second number of REs is a number of REs for data included in each PRB in the current processing cycle, and the second number of REs includes a number of REs for reference signals. The number of REs for data included in each PRB in the current processing cycle in this application also does not include the number of REs for DMRS and the number of REs indicated by higher layers in each PRB. If the UE can process the reference signal and the data at the same time, it is not necessary to remove the number of REs for the reference signal from the total number of REs included in one PRB in determining the number of REs for the PDSCH within one PRB. This embodiment may calculate the second RE number according to equation (2):

wherein the content of the first and second substances,

indicating the number of subcarriers within one PRB.

Indicates the number of REs used for DMRS in a time domain symbol,

is the number of REs of DMRS used to pair the UE.

In this embodiment, after the UE acquires the first indication information, it is not necessary to remove time-frequency resources occupied by reference signals that can be processed simultaneously with data from the time-frequency resources indicated by the first indication information, so that the accuracy and the utilization rate of the TBS are improved, and the processing performance of the UE is improved.

In addition, on the basis of the first and second method embodiments, the method for determining the number of resource elements for data transmission further includes: when no reference signal exists on the time domain symbol, calculating a second RE number according to the first indication information, wherein the second RE number is the RE number used for data included in each PRB in the current processing cycle, and the second RE number comprises the RE number used for the reference signal.

Fig. 8 is a flowchart of a third embodiment of the method for determining the number of resource elements for data transmission according to the present application, and as shown in fig. 8, the method according to the present embodiment may be executed by a sending end in the communication system shown in fig. 5, for example, TRP. The method of the embodiment may include:

step 801, determining whether a reference signal for channel measurement exists on a time domain symbol included in a current processing cycle.

In this embodiment, the scheduling of the UE is limited by the TRP, and as described above, whether uplink scheduling or downlink scheduling is performed, the TRP may learn whether a reference signal for channel measurement exists on a time domain symbol included in the current processing period during configuration.

Step 802, if there is a reference signal on the frequency domain resource, processing data and/or the reference signal according to the processing capability of the user equipment UE.

The TRP, in the presence of reference signals, may refer to the processing capabilities of the UE to determine how to process the data and/or reference signals.

Exemplarily, how the TRP processes data and/or reference signals is explained by taking PDSCH as an example.

One method is that the TRP transmits PDSCH and reference signals by adopting a transmitting beam corresponding to a receiving beam of the PDSCH and the reference signals, and the TRP does not configure UE to carry out receiving beam scanning based on the reference signals; when the UE does not support the simultaneous reception of the SSB and the PDSCH of the synchronous signal blocks with different subcarrier intervals, the reference signal and the PDSCH are transmitted by adopting the same subcarrier interval; when the UE supports simultaneous reception of the SSB and the PDSCH of different subcarrier intervals, the SSB and the PDSCH are transmitted using the same or different subcarrier intervals.

In the current processing period, the TRP judges whether SSB or CSI-RS used for L1-RSRP and/or L1-SINR measurement exists or not, if so, the TRP adopts the same transmitting beam for the reference signal and the PDSCH, the transmitting beam corresponds to the receiving beam of the reference signal and the PDSCH, and the TRP does not configure the UE to carry out receiving beam scanning based on the reference signal. When the UE does not support simultaneous reception of the SSB and the PDSCH of different subcarrier intervals, the TRP adopts the SSB and the PDSCH or the CSI-RS and the PDSCH transmitted by the same subcarrier interval. When the UE supports simultaneous reception of SSBs and PDSCHs of different subcarrier spacings, the TRP may transmit the SSBs and the PDSCHs with the same or different subcarrier spacings. And if not, the TRP adopts any transmission beam transmission and any subcarrier interval supported by the UE to transmit the PDSCH.

Correspondingly, in the current processing cycle, the UE determines whether there is an SSB or CSI-RS for L1-RSRP and/or L1-SINR measurement, and if there is and when the UE does not support simultaneous reception of the SSB and PDSCH of the synchronization signal blocks with different subcarrier intervals, the UE receives the PDSCH and the SSB or the PDSCH and the CSI-RS using the same receive beam and the same subcarrier interval, and does not expect the UE to receive the SSB and PDSCH with different subcarrier intervals on the time domain symbol of the PDSCH, nor expect the UE to receive the SSB and PDSCH or CSI-RS and PDSCH symbols with different receive beams on the time domain symbol of the PDSCH. If the UE supports simultaneous reception of the synchronization signal blocks SSB and PDSCH with different subcarrier intervals, the UE receives the PDSCH and the SSB or the PDSCH and the CSI-RS using the same receive beam and the same subcarrier interval, or the UE receives the PDSCH and the SSB using the same receive beam and different subcarrier intervals, and the UE is not expected to receive the SSB or the CSI-RS using a receive beam different from the PDSCH receive beam on a time domain symbol of the PDSCH. And if not, the UE receives the PDSCH by adopting a receiving beam corresponding to the QCL relation in the activated TCI state of the PDSCH.

Another method is that if the reference signal and the PDSCH cannot be received by the UE at the same time, the TRP does not include the reference signal on the frequency domain resource and only transmits the PDSCH, or the TRP does not include the PDSCH on the frequency domain resource and only transmits the reference signal.

As shown in fig. 9, based on the scheduling restriction, the CSI-RS or SSB that cannot be received by the UE simultaneously with the PDSCH may be in the time slot scheduled by the PDSCH, or the PDSCH may be in the time slot scheduled by the CSI-RS or SSB.

As shown in fig. 10, the TRP does not include reference signals on frequency domain resources, and only the PDSCH is transmitted. That is, in the current processing cycle, when a CSI-RS or an SSB which cannot be received simultaneously with the PDSCH exists on a time domain symbol of the PDSCH, the TRP does not transmit the CSI-RS or the SSB, only transmits the PDSCH, and does not expect the UE to receive the CSI-RS or the SSB.

As shown in fig. 11, the TRP does not include the PDSCH on the frequency domain resources, and only the reference signal is transmitted. That is, in the current processing cycle, when a CSI-RS or an SSB which cannot be received simultaneously with the PDSCH exists on a time domain symbol of the PDSCH, the TRP does not transmit the PDSCH but only transmits the CSI-RS or the SSB, and the UE is not expected to receive the PDSCH.

Further, since the SSB is broadcast and the CSI-RS is UE-specific, the reception and transmission of the SSB are limited, and the impact is much larger than the limitation of CSI-RS transmission, so the following limitations can be made: in the current processing cycle, when an SSB or an SSB and a CSI-RS which cannot be received simultaneously with the PDSCH exist on a time domain symbol of the PDSCH, the TRP does not transmit the PDSCH, only transmits the SSB or the SSB and the CSI-RS, and does not expect the UE to receive the PDSCH. In the current processing period, when CSI-RS which cannot be received simultaneously with PDSCH exists on a time domain symbol of the PDSCH, the TRP does not transmit the CSI-RS, only transmits the PDSCH, and does not expect UE to receive the CSI-RS.

Further, the restriction may be made according to the type of CSI-RS: in the current processing period, when SSB or SSB and CSI-RS which cannot be received simultaneously with PDSCH exist on a time domain symbol of the PDSCH, TRP does not transmit the PDSCH, only transmits the SSB or SSB and CSI-RS, and UE is not expected to receive the PDSCH. In the current processing period, when an aperiodic CSI-RS which cannot be received simultaneously with a PDSCH exists on a time domain symbol of the PDSCH, the TRP does not transmit the non-continuous CSI-RS, only transmits the PDSCH, and does not expect the UE to receive the non-continuous CSI-RS. When a periodic CSI-RS or a semi-continuous CSI-RS which cannot be received simultaneously with a PDSCH exists on a time domain symbol of the PDSCH in a current processing period, the TRP does not transmit the periodic CSI-RS or the semi-continuous CSI-RS, only transmits the PDSCH, and does not expect the UE to receive the periodic CSI-RS or the semi-continuous CSI-RS.

In this embodiment, the TRP reduces the influence of the reference signal on data in the TBS determination process, improves the accuracy of the TBS, and improves the processing performance of the UE by not configuring the SSB or CSI-RS that cannot be received simultaneously with the PDSCH on the time domain symbol of the PDSCH.

It should be noted that, the uplink subcarrier spacing and the downlink subcarrier spacing are bound, and if the downlink SSB subcarrier spacing is not consistent with the subcarrier spacing of the PUSCH and the UE does not support simultaneous processing of signals of two different subcarrier spacings, the processing method for the PDSCH in the above method embodiment also needs to be performed for the PUSCH. In addition, when the high-frequency NR default UE is configured to receive and transmit, the UE only has one analog beam, that is, the receiving beam of the CSI-RS or SSB and the transmitting beam of the PUSCH must use the same beam, otherwise the capability of the UE is exceeded, and therefore, the processing manner for the PDSCH in the above method embodiment also needs to be performed for the PUSCH.

Fig. 12 is a schematic structural diagram of a first embodiment of the apparatus for determining the number of resource elements for data transmission according to the present application, as shown in fig. 12, the apparatus of the present embodiment may be applied to the receiving end shown in fig. 5, and the apparatus may include: the device comprises a transceiver module 1201 and a processing module 1202, wherein the transceiver module 1201 is used for acquiring first indication information; a processing module 1202, configured to determine, according to the first indication information, a time domain symbol and a frequency domain resource for transmitting data; a processing module 1202, further configured to determine whether the reference signal and the data can be processed simultaneously when a reference signal for channel measurement exists on the time domain symbol; a processing module 1202, configured to calculate, if the reference signal and the data cannot be processed simultaneously, a first resource element RE number according to the first indication information, where the first RE number is a number of REs included in each physical resource block PRB in a current processing period and used for the data, and the first RE number does not include the number of REs used for the reference signal; or, if the reference signal and the data can be processed simultaneously, calculating a second RE number according to the first indication information, where the second RE number is a number of REs used for the data included in each PRB in a current processing period, and the second RE number includes a number of REs used for the reference signal.

The apparatus of this embodiment may be used to implement the technical solution of any one of the method embodiments shown in fig. 6-7 and 9-11, and the implementation principle and the technical effect are similar, which are not described herein again.

In a possible implementation manner, the processing module 1202 is further configured to determine whether a first determination condition is met when the data is the PDSCH, and determine whether the reference signal and the PDSCH can be received simultaneously according to a determination result.

In a possible implementation manner, when the received frequency band is a first frequency band, the first determination condition includes: the reference signal is a synchronization signal block, SSB, which has a different subcarrier spacing from the PDSCH and does not support simultaneous reception of SSBs and PDSCH of different subcarrier spacing.

In a possible implementation manner, the processing module 1202 is further configured to determine that the reference signal and the PDSCH may not be received simultaneously if the first determination condition is met.

In a possible implementation manner, when the received frequency band is the second frequency band, the first determination condition includes: (1) The reference signal indicates that a TCI state does not maintain a quasi-co-located QCL relationship with an active transmit configuration of the PDSCH; or, (2) receive beam scanning based on the reference signal is required; or, (3) the reference signal is an SSB, the SSB and the PDSCH have different subcarrier spacings and do not support simultaneous reception of the SSB and PDSCH of different subcarrier spacings.

In a possible implementation manner, the processing module 1202 is further configured to determine that the reference signal and the PDSCH cannot be received simultaneously if the first determination condition is satisfied when the reference signal is an SSB or a channel state information reference signal CSI-RS; or when the reference signal is an SSB, if the first determination condition is satisfied, determining that the reference signal and the PDSCH cannot be received simultaneously, and when the reference signal is a CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH can be received simultaneously; or when the reference signal is an SSB or a periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is a semi-persistent CSI-RS or a non-periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously; or when the reference signal is an SSB, a periodic CSI-RS, or a semi-persistent CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is an aperiodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously.

In a possible implementation manner, the processing module 1202 is further configured to calculate the first RE number according to formula (1):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

representing the number of time domain symbols for the reference signal in the time domain symbol,

representing the number of REs used for a demodulation reference signal, DMRS, in the time domain symbol,

a value indicated for a higher layer.

In a possible implementation manner, the processing module 1202 is further configured to determine whether a second determination condition is met when the data is the PDSCH, and determine that the reference signal and the PDSCH can be received simultaneously if the second determination condition is met.

In a possible implementation manner, when the receiving frequency band is the first frequency band, the second determination condition includes: (1) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH with different subcarrier intervals are supported to be received simultaneously; or, (2) the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

In a possible implementation manner, when the receiving frequency band is a second frequency band, the second determination condition includes: (1) The reference signal maintains a QCL relationship with an activated TCI state of the PDSCH; and, (2) no receive beam scanning is required based on the reference signal; and, (3) the reference signal is an SSB, which has a different subcarrier spacing from the PDSCH and supports simultaneous reception of SSBs and PDSCH of different subcarrier spacing; or the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

In a possible implementation manner, the processing module 1202 is further configured to calculate the second RE number according to formula (2):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

represents the number of REs for DMRS in the time domain symbol,

a value indicated for higher layers.

In a possible implementation manner, the processing module 1202 is further configured to calculate, according to the first indication information, a second number of REs when the reference signal is absent on the time-domain symbol, where the second number of REs is a number of REs included in each PRB in a current processing cycle and used for the data, and the second number of REs includes a number of REs used for the reference signal.

Fig. 13 is a schematic structural diagram of a second embodiment of the apparatus for determining the number of resource elements for data transmission according to the present application, as shown in fig. 13, the apparatus of this embodiment may be applied to the transmitting end shown in fig. 5, and the apparatus may include: processing module 1301 the processing module 1301 is configured to determine whether a reference signal for channel measurement exists on a time domain symbol included in a current processing cycle; the processing module 1301 is further configured to, if the reference signal exists on the frequency domain resource, process data and/or the reference signal according to a processing capability of a user equipment UE.

The apparatus of this embodiment may be used to implement the technical solution of any one of the method embodiments shown in fig. 8 to 11, and the implementation principle and the technical effect are similar, which are not described herein again.

In a possible implementation manner, when the data is a PDSCH (physical downlink shared channel), the processing module 1301 is further configured to transmit the PDSCH and the reference signal by using a transmit beam corresponding to a receive beam of the PDSCH and the reference signal, and not configure the UE to perform receive beam scanning based on the reference signal; when the UE does not support simultaneous reception of the SSB and the PDSCH of the synchronization signal blocks with different subcarrier intervals, the reference signal and the PDSCH are transmitted by adopting the same subcarrier interval; and when the UE supports the simultaneous reception of the SSB and the PDSCH with different subcarrier intervals, the SSB and the PDSCH are transmitted by adopting the same or different subcarrier intervals.

In a possible implementation manner, when the data is a PDSCH, the processing module 1301 is further configured to, if the reference signal and the PDSCH cannot be simultaneously received by the UE, transmit only the PDSCH without the reference signal on the frequency domain resource, or transmit only the reference signal without the PDSCH on the frequency domain resource.

In a possible implementation manner, the processing module 1301 is further configured to, when the reference signal is a channel state information reference signal CSI-RS, not include the CSI-RS on the frequency domain resource, and only send the PDSCH.

In a possible implementation manner, the processing module 1301 is further configured to, when the reference signal is an SSB, not include the PDSCH on the frequency domain resource, and only send the SSB; or, when the reference signal is an SSB and a CSI-RS, the PDSCH is not included on the frequency domain resource, and only the SSB and the CSI-RS are transmitted.

Fig. 14 is a schematic structural diagram of an embodiment of a communication device according to the present application, and as shown in fig. 14, the communication device may be a transmitting end or a receiving end in the communication system shown in fig. 5. The communication device comprises a processor 1401, a memory 1402 and input means 1403; the number of the processors 1401 in the communication device may be one or more, and one processor 1401 is taken as an example in fig. 14; the processor 1401, the memory 1402, and the communication means 1403 in the communication apparatus may be connected by a bus or other means, and fig. 14 illustrates the connection by a bus as an example.

Memory 1402 serves as a computer-readable storage medium that may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the methods of any of the illustrated embodiments of fig. 6-11 of the present application. The processor 1401 executes various functional applications of the communication device and data processing, that is, implements the above-described resource element number determination method for data transmission, by executing software programs, instructions, and modules stored in the memory 1402.

The memory 1402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 1402 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1402 may further include memory located remotely from the processor 1401, which may be connected to a communication device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Communication means 1403 can be used for sending or receiving data.

In one possible implementation, the present application provides a computer-readable storage medium storing instructions for performing a method in any of the illustrated embodiments of fig. 6-11 described above when the instructions are executed on a computer.

In one possible implementation, the present application provides a computer program for performing the method in any of the embodiments shown in fig. 6-11 described above when the computer program is executed by a computer.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining a number of resource elements for data transmission, comprising:

acquiring first indication information;

determining time domain symbols and frequency domain resources for transmitting data according to the first indication information;

determining whether the reference signal and the data can be simultaneously processed when a reference signal for channel measurement exists on the time domain symbol;

if the reference signal and the data cannot be processed simultaneously, calculating a first Resource Element (RE) quantity according to the first indication information, wherein the first RE quantity is the RE quantity used for the data in each Physical Resource Block (PRB) in the current processing cycle, and the first RE quantity does not include the RE quantity used for the reference signal; or, if the reference signal and the data can be processed simultaneously, calculating a second RE number according to the first indication information, where the second RE number is a number of REs used for the data included in each PRB in a current processing period, and the second RE number includes a number of REs used for the reference signal.

2. The method of claim 1, wherein when the data is a Physical Downlink Shared Channel (PDSCH), the determining whether the reference signal and the data can be processed simultaneously comprises:

and judging whether a first judgment condition is met, and determining whether the reference signal and the PDSCH can be received simultaneously according to a judgment result.

3. The method of claim 2, wherein when the receiving frequency band is a first frequency band, the first determination condition comprises:

the reference signal is a Synchronization Signal Block (SSB), the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH which simultaneously receive different subcarrier intervals are not supported.

4. The method of claim 3, wherein the determining whether the reference signal and the PDSCH can be received simultaneously according to the determination result comprises:

determining that the reference signal and the PDSCH may not be received simultaneously if the first determination condition is satisfied.

5. The method of claim 2, wherein when the receiving band is a second band, the first determination condition comprises:

(1) The reference signal indicates that a TCI state does not maintain a quasi-co-located QCL relationship with an active transmit configuration of the PDSCH; alternatively, the first and second electrodes may be,

(2) A receive beam scan based on the reference signal is required; alternatively, the first and second electrodes may be,

(3) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH which receive different subcarrier intervals at the same time are not supported.

6. The method of claim 5, wherein the determining whether the reference signal and the PDSCH can be received simultaneously according to the determination result comprises:

when the reference signal is an SSB or a channel state information reference signal (CSI-RS), if the first judgment condition is met, determining that the reference signal and the PDSCH cannot be received simultaneously; alternatively, the first and second electrodes may be,

when the reference signal is an SSB, if the first determination condition is met, determining that the reference signal and the PDSCH cannot be received simultaneously, and when the reference signal is a CSI-RS, if the first determination condition is met, determining that the reference signal and the PDSCH can be received simultaneously; alternatively, the first and second liquid crystal display panels may be,

when the reference signal is an SSB or a periodic CSI-RS, determining that the reference signal and the PDSCH cannot be simultaneously received if the first determination condition is met, and when the reference signal is a semi-persistent CSI-RS or a non-periodic CSI-RS, determining that the reference signal and the PDSCH can be simultaneously received if the first determination condition is met; alternatively, the first and second electrodes may be,

when the reference signal is an SSB, a periodic CSI-RS or a semi-persistent CSI-RS, if the first determination condition is satisfied, it is determined that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is an aperiodic CSI-RS, if the first determination condition is satisfied, it is determined that the reference signal and the PDSCH may be received simultaneously.

7. The method according to any of claims 1-6, wherein said calculating a first RE number according to the first indication information comprises:

calculating the first number of REs according to equation (1):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

a value indicated for higher layers.

8. The method of claim 1, wherein when the data is the PDSCH, the determining whether the reference signal and the data can be processed simultaneously comprises:

and judging whether a second judgment condition is met, and if the second judgment condition is met, determining that the reference signal and the PDSCH can be received simultaneously.

9. The method of claim 8, wherein when the receiving band is a first band, the second determination condition comprises:

(1) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH with different subcarrier intervals are supported to be received simultaneously; alternatively, the first and second liquid crystal display panels may be,

(2) The reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

10. The method of claim 8, wherein when the received frequency band is a second frequency band, the second determination condition comprises:

(1) The reference signals maintain a QCL relationship with an activated TCI state of the PDSCH; and the number of the first and second groups,

(2) No receive beam scanning is required based on the reference signals; and (c) a second step of,

(3) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH with different subcarrier intervals are supported to be received simultaneously; or the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

11. The method according to any of claims 1 and 8-10, wherein said calculating a second number of REs according to the first indication information comprises:

calculating the second RE number according to equation (2):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

representing the number of REs used for DMRS in the time domain symbolThe amount of the compound (A) is,

a value indicated for higher layers.

12. The method of any one of claims 1-6, 8-10, further comprising:

when the reference signal does not exist on the time domain symbol, calculating a second RE number according to the first indication information, where the second RE number is the number of REs for the data included in each PRB in the current processing period, and the second RE number includes the number of REs for the reference signal.

13. A method for determining a number of resource elements for data transmission, comprising:

determining whether a reference signal for channel measurement exists on a time domain symbol included in a current processing period;

if the reference signal exists on the time domain symbol, processing data and/or the reference signal according to the processing capacity of User Equipment (UE);

wherein the processing data and/or the reference signal according to the processing capability of the UE comprises:

if the reference signal and the PDSCH can be received by the UE at the same time, transmitting the PDSCH and the reference signal by adopting a transmitting beam corresponding to a receiving beam of the PDSCH and the reference signal, and not configuring the UE to perform receiving beam scanning based on the reference signal;

if the reference signal and the PDSCH cannot be received by the UE at the same time, the reference signal is not included on the frequency domain resources, and only the PDSCH is sent, or the reference signal is only sent without including the PDSCH on the frequency domain resources.

14. The method of claim 13, wherein transmitting the PDSCH and the reference signal using a transmit beam corresponding to a receive beam of the PDSCH and the reference signal without configuring the UE to receive beam scanning based on the reference signal comprises:

when the UE does not support simultaneous reception of the SSB and the PDSCH of the synchronization signal blocks with different subcarrier intervals, the reference signal and the PDSCH are transmitted by adopting the same subcarrier interval;

and when the UE supports the simultaneous reception of the SSB and the PDSCH with different subcarrier intervals, the SSB and the PDSCH are transmitted by adopting the same or different subcarrier intervals.

15. The method of claim 13, wherein the transmitting only the PDSCH without the reference signal on the frequency domain resources comprises:

and when the reference signal is a channel state information reference signal (CSI-RS), only the PDSCH is sent without including the CSI-RS on the frequency domain resource.

16. The method of claim 13, wherein the transmitting only the reference signal without the PDSCH on the frequency domain resources comprises:

when the reference signal is an SSB, the PDSCH is not included in the frequency domain resource, and only the SSB is sent; alternatively, the first and second electrodes may be,

when the reference signals are SSBs and CSI-RSs, the PDSCH is not included on the frequency domain resources, and only the SSBs and the CSI-RSs are transmitted.

17. An apparatus for determining a number of resource elements for data transmission, comprising:

the receiving and sending module is used for acquiring first indication information;

a processing module, configured to determine a time domain symbol and a frequency domain resource for transmitting data according to the first indication information;

the processing module is further configured to determine whether the reference signal and the data can be processed simultaneously when a reference signal for channel measurement exists on the time domain symbol;

the processing module is further configured to calculate, if the reference signal and the data cannot be processed simultaneously, a first Resource Element (RE) number according to the first indication information, where the first RE number is a number of REs included in each Physical Resource Block (PRB) in a current processing period and used for the data, and the first RE number does not include the number of REs used for the reference signal; or, if the reference signal and the data can be processed simultaneously, calculating a second RE number according to the first indication information, where the second RE number is a number of REs used for the data included in each PRB in a current processing period, and the second RE number includes a number of REs used for the reference signal.

18. The apparatus of claim 17, wherein the processing module is further configured to determine whether a first determination condition is met when the data is a PDSCH (physical downlink shared channel), and determine whether the reference signal and the PDSCH can be received simultaneously according to a determination result.

19. The apparatus of claim 18, wherein when the receiving band is a first band, the first determination condition comprises: the reference signal is a synchronization signal block, SSB, which has a different subcarrier spacing from the PDSCH and does not support simultaneous reception of SSBs and PDSCH of different subcarrier spacing.

20. The apparatus of claim 19, wherein the processing module is further configured to determine that the reference signal and the PDSCH cannot be received simultaneously if the first determination condition is satisfied.

21. The apparatus of claim 18, wherein when the receiving frequency band is a second frequency band, the first determination condition comprises: (1) Activated transmission configuration of the reference signals and the PDSCH indicates that a TCI state does not maintain a quasi-co-located QCL relationship; or, (2) receive beam scanning based on the reference signal is required; or, (3) the reference signal is an SSB, the SSB and the PDSCH have different subcarrier spacings and do not support simultaneous reception of the SSB and PDSCH of different subcarrier spacings.

22. The apparatus of claim 21, wherein the processing module is further configured to determine that the reference signal and the PDSCH cannot be received simultaneously if the first determination condition is met when the reference signal is an SSB or a channel state information reference signal CSI-RS; or when the reference signal is an SSB, determining that the reference signal and the PDSCH may not be received simultaneously if the first determination condition is satisfied, and when the reference signal is a CSI-RS, determining that the reference signal and the PDSCH may be received simultaneously if the first determination condition is satisfied; or when the reference signal is an SSB or a periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is a semi-persistent CSI-RS or a non-periodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously; or when the reference signal is an SSB, a periodic CSI-RS, or a semi-persistent CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may not be received simultaneously, and when the reference signal is an aperiodic CSI-RS, if the first determination condition is satisfied, determining that the reference signal and the PDSCH may be received simultaneously.

23. The apparatus of any of claims 17-22, wherein the processing module is further configured to calculate the first RE number according to formula (1):

wherein the content of the first and second substances,

indicates the number of sub-carriers within one PRB,

a value indicated for a higher layer.

24. The apparatus of claim 17, wherein the processing module is further configured to determine whether a second determination condition is satisfied when the data is the PDSCH, and determine that the reference signal and the PDSCH can be received simultaneously if the second determination condition is satisfied.

25. The apparatus of claim 24, wherein when the receiving frequency band is a first frequency band, the second determination condition comprises: (1) The reference signal is an SSB, the SSB and the PDSCH have different subcarrier intervals, and the SSB and the PDSCH with different subcarrier intervals are supported to be received simultaneously; or, (2) the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

26. The apparatus of claim 24, wherein when the receiving frequency band is a second frequency band, the second determination condition comprises: (1) The reference signals maintain a QCL relationship with an activated TCI state of the PDSCH; and, (2) no receive beam scanning based on the reference signal is required; and, (3) the reference signal is an SSB, the SSB having a different subcarrier spacing from the PDSCH and supporting simultaneous reception of SSBs and PDSCH of different subcarrier spacing; or the reference signal is an SSB or a CSI-RS, and the SSB or the CSI-RS has the same subcarrier spacing as the PDSCH.

27. The apparatus of any of claims 17 and 24-26, wherein the processing module is further configured to calculate the second RE number according to formula (2):

wherein, the first and the second end of the pipe are connected with each other,

indicates the number of sub-carriers within one PRB,

represents the number of REs for DMRS in the time domain symbol,

a value indicated for higher layers.

28. The apparatus of any of claims 17-22 and 24-26, wherein the processing module is further configured to calculate a second number of REs according to the first indication information when the reference signal is not present on the time-domain symbol, where the second number of REs is a number of REs included in each PRB for the data in a current processing cycle, and the second number of REs includes a number of REs for the reference signal.

29. An apparatus for determining a number of resource elements for data transmission, comprising:

a processing module for determining whether a reference signal for channel measurement exists on a time domain symbol included in a current processing period;

the processing module is further configured to process data and/or the reference signal according to a processing capability of a User Equipment (UE) if the reference signal exists on the time domain symbol;

the processing module is further configured to send the PDSCH and the reference signal using a transmit beam corresponding to a receive beam of the PDSCH and the reference signal if the reference signal and the PDSCH can be simultaneously received by the UE, and not configure the UE to perform receive beam scanning based on the reference signal; if the reference signal and the PDSCH cannot be received by the UE at the same time, the reference signal is not included on the frequency domain resources, and only the PDSCH is sent, or the reference signal is only sent without including the PDSCH on the frequency domain resources.

30. The apparatus of claim 29, wherein the processing module is further configured to transmit the reference signal and the PDSCH with a same subcarrier spacing when the UE does not support simultaneous reception of synchronization signal blocks SSB and PDSCH with different subcarrier spacings; and when the UE supports the simultaneous reception of the SSB and the PDSCH with different subcarrier intervals, the SSB and the PDSCH are transmitted by adopting the same or different subcarrier intervals.

31. The apparatus of claim 29, wherein the processing module is further configured to transmit only the PDSCH without including the CSI-RS on the frequency domain resources when the reference signal is a channel state information reference signal, CSI-RS.

32. The apparatus of claim 29, wherein the processing module is further configured to transmit only the SSBs without including the PDSCH on the frequency domain resources when the reference signal is an SSB; or, when the reference signal is an SSB and a CSI-RS, the PDSCH is not included on the frequency domain resource, and only the SSB and the CSI-RS are transmitted.

33. A communication device, comprising:

one or more processors;

a memory for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-16.

34. A computer-readable storage medium having stored thereon instructions for performing the method of any one of claims 1-16 when the instructions are run on a computer.