CN117998592A

CN117998592A - TBS determining method, TBS determining device and storage medium

Info

Publication number: CN117998592A
Application number: CN202211380844.4A
Authority: CN
Inventors: 焦淑蓉; 花梦; 李军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2024-05-07
Also published as: WO2024094030A1

Abstract

A TBS determining method, a TBS determining device and a storage medium relate to the technical field of communication. The method may be performed by a terminal device or a network device. The method comprises the following steps: determining the number of PRBs (physical resource blocks) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band, wherein the first sub-band on at least one symbol in the time domain resource of the first channel is not used for transmitting the first channel; determining the number of REs used for transmitting the first channel in the first time slot according to the number of PRBs used for transmitting the first channel in the first time slot; and determining the TBS of the transmission block borne on the first channel in the first time slot according to the number of the REs used for transmitting the first channel in the first time slot. The method can improve the accuracy of TBS.

Description

TBS determining method, TBS determining device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for determining a TBS, and a storage medium.

Background

In a sub-band full duplex (subband full duplex, SBFD) system, for a downlink slot configured with an uplink sub-band, if a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) to be scheduled spans the uplink sub-band, the terminal device needs to avoid the uplink sub-band for PDSCH reception. Similarly, for the uplink time slot configured with the downlink sub-band, if a Physical Uplink SHARED CHANNEL (PUSCH) to be scheduled spans the downlink sub-band, the terminal device needs to avoid the downlink sub-band to perform PUSCH reception.

In the SBFD system, for the downlink timeslot configured with the uplink sub-band, the related technology does not consider the resources occupied by the uplink sub-band when determining the size (transport block size, TBS) of the transport block, so that the number of PRBs actually used by the terminal device is different from the number of PRBs indicated in the DCI, and further the code rate of the actual transmission is increased, and the transmission performance is affected. Similarly, for uplink timeslots in which downlink subbands are configured, the related art does not consider resources occupied by the downlink subbands when determining TBS, and thus similar problems may also result.

Disclosure of Invention

The embodiment of the application provides a TBS determining method, a TBS determining device and a storage medium, which are used for aiming at a sub-band full duplex scene, and the situation that a channel overlaps with a sub-band is considered when determining the TBS, so that the accuracy of the TBS is improved.

In a first aspect, a TBS determining method is provided, which may be applied to a terminal device or a network device, and includes: determining the number of Physical Resource Blocks (PRBs) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band; determining the number of Resource Elements (REs) of the first channel for transmitting the first channel in the first time slot according to the number of PRBs of the first channel for transmitting the first channel in the first time slot; and determining the TBS of the transmission block borne on the first channel in the first time slot according to the number of REs used for transmitting the first channel in the first time slot. Wherein the first sub-band on at least one symbol in the time domain resource of the first channel is not used for transmitting the first channel, and the first time slot is a time slot where the time domain resource of the first channel is located, or the first time slot is one of at least two time slots where the time domain resource of the first channel is located.

According to the implementation manner, aiming at the full duplex scene of the sub-band, when determining the TBS, the terminal equipment considers the situation that the first channel overlaps with the first sub-band, and when determining the number of PRBs of the first channel in the first time slot, the terminal equipment not only depends on the frequency domain resource information of the first channel but also depends on the frequency domain resource information of the first sub-band, so that the number of PRBs of the first channel for transmitting the first channel in the first time slot can be determined, the determined TBS is more suitable for the transmission resources of the first channel, the accuracy of the TBS is improved, and the transmission performance is further ensured.

In a possible implementation manner, the determining, according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the number of PRBs used by the first channel to transmit the first channel in the first slot includes: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the first time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the first time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the first time slot.

In the implementation manner, for the sub-band full duplex scenario, when determining the TBS, the terminal device considers that the first channel overlaps with the first sub-band, and when determining the number of PRBs of the first channel in the first time slot, subtracts the unavailable PRB of the first channel in the first time slot from the PRB of the first channel in the first time slot indicated by the frequency domain resource information of the first channel, so that the number of PRBs of the first channel in the first time slot used for transmitting the first channel can be determined, so that the determined TBS is more adapted to the transmission resources of the first channel, the accuracy of the TBS is improved, and the transmission performance is further ensured.

In one possible implementation, the subtracting, from the PRBs of the first channel in the first slot indicated by the frequency domain resource information of the first channel, the unavailable PRBs of the first channel in the first slot includes: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by frequency domain resource information of the first channel if a first condition is met; wherein the first condition includes: the ratio of M1 to L1 is greater than or equal to a first threshold, L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1.

In the implementation manner, when the number of symbols of the first sub-band is relatively high, the unavailable PRB of the first channel in the first time slot is subtracted from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the first time slot, so that the determined number of PRBs of the first channel in the first time slot used for transmitting the first channel is more accurate, in other words, the determined number of PRBs in this manner is more consistent with the number of PRBs actually available for transmitting the first channel in the first time slot.

In a possible implementation manner, the method further includes: determining the number of REs in a first PRB of the first channel according to the time domain resource information of the first channel; the determining, according to the number of PRBs used by the first channel to transmit the first channel in the first slot, the number of REs used by the first channel to transmit the first channel in the first slot includes: and determining the RE number of the first channel for transmitting the first channel in the first time slot according to the RE number in the first PRB of the first channel and the PRB number of the first channel for transmitting the first channel in the first time slot.

Optionally, the number of REs in the first PRB of the first channel satisfies the following formula:

Wherein N' _RE is the number of REs in the first PRB of the first channel, For the number of subcarriers within one PRB,/>For the number of symbols allocated to said first channel in a slot,/>For the RE number of DMRS on one PRB,/>Configured by a high level; wherein/>/>, With higher layer configurationDifferently, said/>For determining the number of REs in one PRB for a second channel, the frequency domain resources of all symbols in the second channel do not overlap with the first subband.

In the implementation manner, since the method is aimed at the full duplex scene of the sub-bandThe TBS is optimized, so that the TBS can be more suitable for the total number of transmission resources, and the transmission performance is ensured.

Optionally, theThe value of (1) is determined according to the relation between a first ratio and a set threshold, wherein the first ratio is M1/L1, M1 is the number of symbols of the first channel overlapped with the first sub-band in the first time slot, and N1 is the number of symbols of the first channel in the first time slot.

In a possible implementation manner, the determining, according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the number of PRBs used by the first channel to transmit the first channel in the first slot includes: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain a first PRB number, wherein the first PRB number is the PRB number of the first channel used for transmitting the first channel on at least one symbol in the first time slot; the determining, according to the number of PRBs used by the first channel to transmit the first channel in the first slot, the number of REs used by the first channel to transmit the first channel in the first slot includes: determining the RE number used for transmitting the first channel on the M1 symbols according to the symbol number of the M1 symbols and the first PRB number, wherein the M1 symbols are symbols corresponding to the at least one symbol; determining the number of REs used for transmitting the first channel on the L1' symbols according to the number of symbols of the L1' symbols and the number of PRBs of the first channel in the first slot indicated by the frequency domain resource information of the first channel, wherein L1' =l1-M1, and L1 is the number of symbols of the first channel in the first slot; and adding the RE number used for transmitting the first channel on the M1 symbols and the RE number used for transmitting the first channel on the L1' symbols to obtain the RE number used for transmitting the first channel in the first time slot by the first channel.

The implementation manner can determine the number of PRBs (physical resource blocks) and the number of REs respectively in different manners for the symbols with the overlapping first sub-band and the symbols without the overlapping first sub-band in the first channel, so that the determined number of REs for transmitting the first channel in the first time slot is more accurate, in other words, the determined number of REs in the manner is more consistent with the number of REs actually available for transmitting the first channel in the first time slot.

Optionally, the number of REs on the M1 symbols used for transmitting the first channel satisfies the following formula:

the number of REs on the L1' symbols used for transmitting the first channel satisfies the following formula:

wherein N _RE,M1 is the number of REs used for transmitting the first channel on the M1 symbols, For the RE number of the demodulation reference signal DMRS on the M1 symbols,/>Configured by higher layers or/>N _RE,L1′ is the number of REs on the L1' symbols used to transmit the first channel,/>For the RE number of DMRS on the L1' symbols,/>Configured by higher layers or/>N _PRB is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, and n _over _subband is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, where PRBs in the first slot indicated by the frequency domain resource information of the first channel overlap with PRBs in the first slot indicated by the frequency domain resource information of the first subband.

In a possible implementation manner, subtracting an unavailable PRB of the first channel in the first slot from a PRB of the first channel in the first slot indicated by frequency domain resource information of the first channel includes: and subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by the frequency domain resource information of the first channel according to first indication information sent by network equipment. The time slot mode can improve the flexibility of the system.

Optionally, the first indication information is used to indicate whether to subtract the PRB in one time slot indicated by the frequency domain resource information of the first subband from the PRB in one time slot indicated by the frequency domain resource information of the first channel.

Optionally, the first indication information is carried in RRC signaling or DCI.

In a possible implementation manner, if the transport block is repeatedly transmitted in K timeslots, where the K timeslots are K timeslots in timeslots where a time domain resource of the first channel is located, where the K timeslots include the first timeslot, and where K is an integer greater than 1, a TBS of the transport block carried on the first channel in each timeslot of the K timeslots other than the first timeslot is the same as a TBS of the transport block carried on the first channel in the first timeslot.

The implementation improves the solution for repeated transmissions in a subband full duplex scenario.

In a possible implementation manner, if the transport block is repeatedly transmitted in K slots, where the K slots are K slots in a slot in which a time domain resource of the first channel is located, the K slots include the first slot, and K is an integer greater than 1, the method further includes: respectively determining TBS of the transmission block carried on the first channel in each time slot except the first time slot in the K time slots; and selecting the maximum value or the minimum value of the TBS of the transmission block carried on the first channel in the K time slots, and determining the maximum value or the minimum value as the TBS of the transmission block carried on the first channel in each time slot in the K time slots. The implementation improves the solution for repeated transmissions in a subband full duplex scenario.

Optionally, the K time slots include a second time slot, where the second time slot is different from the first time slot, and the determining TBS of the transport block carried on the first channel in each time slot of the K time slots except for the first time slot includes: determining the number of PRBs of the first channel used for transmitting the first channel in the second time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band; determining the number of REs of the first channel for transmitting the first channel in the second time slot according to the number of PRBs of the first channel for transmitting the first channel in the second time slot; and determining the TBS of the transmission block carried on the first channel in the second time slot according to the RE quantity of the first channel in the second time slot for transmitting the first channel.

Optionally, the determining, according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the number of PRBs used by the first channel for transmitting the first channel in the second slot includes: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the second time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the second time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the second time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the second time slot.

Optionally, subtracting, from the PRBs of the first channel indicated by the frequency domain resource information of the first channel in the second slot, the unavailable PRBs of the first channel in the second slot includes: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a second condition is met; wherein the second condition includes: the ratio of M2 to L2 is greater than or equal to a second threshold, L2 is the number of symbols in the second slot of the first channel, M2 is the number of symbols of the first channel overlapping the first subband in the second slot, M2 and L2 are integers greater than or equal to 1, and M2 is less than or equal to L2.

Optionally, subtracting, from the PRBs of the first channel indicated by the frequency domain resource information of the first channel in the second slot, the unavailable PRBs of the first channel in the second slot includes: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a third condition is met; wherein the third condition includes: the ratio of K 'to K is greater than or equal to a third threshold, each of the K' time slots of the first channel overlaps the first sub-band, K 'is an integer greater than or equal to 1, and K' is less than or equal to K.

In a possible implementation manner, the determining the TBS of the transport block carried on the first channel in the first timeslot according to the number of REs used for transmitting the first channel in the first timeslot includes: determining a first intermediate value according to the RE quantity, a first scale factor, the coding code rate of the first channel, the modulation order and the layer number of the first channel, which are used for transmitting the first channel in the first time slot, and performing table lookup according to the first intermediate value to obtain the TBS of the transmission block borne on the first channel in the first time slot; wherein the first scale factor is different from a second scale factor, the second scale factor is used for determining a TBS for a second channel, and frequency domain resources of all symbols in the second channel are not overlapped with the first sub-band.

The implementation mode can be optimized through the comparison factor S, so that TBS can be more suitable for the total number of transmission resources, and the transmission performance is ensured.

Optionally, the first scaling factor is determined according to a relation between a first ratio and a set threshold, where the first ratio is M1/L1, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, and L1 is the number of symbols of the first channel in the first slot.

In a possible implementation manner, before the determining, according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the number of physical resource blocks PRB of the first channel used for transmitting the first channel in the first slot, the method further includes: and acquiring time-frequency resource information of the first channel and time-frequency resource information of the first sub-band, which are sent by the network equipment.

In a possible implementation manner, before the determining, according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the number of physical resource blocks PRB of the first channel used for transmitting the first channel in the first slot, the method further includes: and distributing the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band to the terminal equipment.

In a possible implementation manner, the first channel is a Physical Downlink Shared Channel (PDSCH), or the first channel is a Physical Uplink Shared Channel (PUSCH).

In a second aspect, there is provided a communication apparatus comprising: a processing unit and a receiving and transmitting unit; the processing unit is used for: determining the number of Physical Resource Blocks (PRBs) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band, wherein the first sub-band on at least one symbol in the time domain resources of the first channel is not used for transmitting the first channel, and the first time slot is a time slot in which the time domain resources of the first channel are located or one of at least two time slots in which the time domain resources of the first channel are located; determining the number of Resource Elements (REs) of the first channel for transmitting the first channel in the first time slot according to the number of PRBs of the first channel for transmitting the first channel in the first time slot; and determining the TBS of the transmission block borne on the first channel in the first time slot according to the number of REs used for transmitting the first channel in the first time slot.

In a possible implementation manner, the processing unit is configured to: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the first time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the first time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the first time slot.

Optionally, the processing unit is specifically configured to: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by frequency domain resource information of the first channel if a first condition is met; wherein the first condition includes: the ratio of M1 to L1 is greater than or equal to a first threshold, L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1.

In a possible implementation manner, the processing unit is further configured to: determining the number of REs in a first PRB of the first channel according to the time domain resource information of the first channel; and determining the RE number of the first channel for transmitting the first channel in the first time slot according to the RE number in the first PRB of the first channel and the PRB number of the first channel for transmitting the first channel in the first time slot.

In a possible implementation manner, the processing unit is specifically configured to: subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain a first PRB number, wherein the first PRB number is the PRB number of the first channel used for transmitting the first channel on at least one symbol in the first time slot; determining the RE number used for transmitting the first channel on the M1 symbols according to the symbol number of the M1 symbols and the first PRB number, wherein the M1 symbols are symbols corresponding to the at least one symbol; determining the number of REs used for transmitting the first channel on the L1' symbols according to the number of symbols of the L1' symbols and the number of PRBs of the first channel in the first slot indicated by the frequency domain resource information of the first channel, wherein L1' =l1-M1, and L1 is the number of symbols of the first channel in the first slot; and adding the RE number used for transmitting the first channel on the M1 symbols and the RE number used for transmitting the first channel on the L1' symbols to obtain the RE number used for transmitting the first channel in the first time slot by the first channel.

In a possible implementation manner, the processing unit is specifically configured to: and subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by the frequency domain resource information of the first channel according to first indication information sent by network equipment.

In a possible implementation manner, if the transport block is repeatedly transmitted in K time slots, where the K time slots are K time slots in a time slot in which a time domain resource of the first channel is located, the K time slots include the first time slot, and K is an integer greater than 1, the processing unit is further configured to: respectively determining TBS of the transmission block carried on the first channel in each time slot except the first time slot in the K time slots; and selecting the maximum value or the minimum value of the TBS of the transmission block carried on the first channel in the K time slots, and determining the maximum value or the minimum value as the TBS of the transmission block carried on the first channel in each time slot in the K time slots.

In a possible implementation manner, the K time slots include a second time slot, where the second time slot is different from the first time slot, and the processing unit is specifically configured to: determining the number of PRBs of the first channel used for transmitting the first channel in the second time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band; determining the number of REs of the first channel for transmitting the first channel in the second time slot according to the number of PRBs of the first channel for transmitting the first channel in the second time slot; and determining the TBS of the transmission block carried on the first channel in the second time slot according to the RE quantity of the first channel in the second time slot for transmitting the first channel.

Optionally, the processing unit is specifically configured to: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the second time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the second time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the second time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the second time slot.

Optionally, the processing unit is specifically configured to: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a second condition is met; wherein the second condition includes: the ratio of M2 to L2 is greater than or equal to a second threshold, L2 is the number of symbols in the second slot of the first channel, M2 is the number of symbols of the first channel overlapping the first subband in the second slot, M2 and L2 are integers greater than or equal to 1, and M2 is less than or equal to L2.

Optionally, the processing unit is specifically configured to: subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a third condition is met; wherein the third condition includes: the ratio of K 'to K is greater than or equal to a third threshold, each of the K' time slots of the first channel overlaps the first sub-band, K 'is an integer greater than or equal to 1, and K' is less than or equal to K.

In a possible implementation manner, the processing unit is specifically configured to: determining a first intermediate value according to the RE quantity, a first scale factor, the coding code rate of the first channel, the modulation order and the layer number of the first channel, which are used for transmitting the first channel in the first time slot, and performing table lookup according to the first intermediate value to obtain the TBS of the transmission block borne on the first channel in the first time slot; wherein the first scale factor is different from a second scale factor, the second scale factor is used for determining a TBS for a second channel, and frequency domain resources of all symbols in the second channel are not overlapped with the first sub-band.

In a possible implementation manner, the processing unit is further configured to: and before determining the number of Physical Resource Blocks (PRBs) of the first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, acquiring the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band, which are sent by network equipment.

In a possible implementation manner, the processing unit is further configured to: and before determining the number of Physical Resource Blocks (PRBs) of the first channel used for transmitting the first channel in the first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, distributing the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band for the terminal equipment.

In a possible implementation manner, the first channel is PDSCH, or the first channel is PUSCH.

In a third aspect, there is provided a communication apparatus comprising: one or more processors; wherein the instructions of the one or more computer programs, when executed by the one or more processors, cause the communications apparatus to perform the method of any of the first aspects described above.

In a fourth aspect, there is provided a computer readable storage medium comprising a computer program which, when run on a computing device, causes the computing device to perform the method of any one of the first aspects above.

In a fifth aspect, a chip is provided, coupled to a memory, for reading and executing program instructions stored in the memory to implement the method according to any of the first aspects above.

In a sixth aspect, a communication system is provided, the communication system comprising a network device and a terminal device, the network device being capable of performing the method as claimed in any of the first aspects, the terminal device being capable of performing the method as claimed in any of the first aspects.

In a seventh aspect, there is provided a computer program product which, when invoked by a computer, causes the computer to perform the method of any of the first aspects.

The advantages of the second aspect to the seventh aspect are described above with reference to the advantages of the first aspect, and the description is not repeated.

Drawings

FIG. 1 is a schematic diagram of a search space set;

Fig. 2 is a schematic diagram of time-frequency resources for FDD, TDD, and SBFD;

Fig. 3 is a schematic diagram of a mobile communication system according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a TBS determining method implemented at a terminal device side according to an embodiment of the present application;

FIG. 5 is a schematic diagram of repeated transmissions in an embodiment of the present application;

FIG. 6 is a second schematic diagram of repeated transmissions in an embodiment of the present application;

fig. 7 is a schematic flow chart of interaction between a network device and a terminal device according to an embodiment of the present application;

fig. 8 is a schematic flow chart of a TBS determining method implemented at a network device side according to an embodiment of the present application;

Fig. 9 and fig. 10 are schematic structural diagrams of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

It should be understood that in the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/" generally indicates that the front-rear associated object is an or relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, and c may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Wherein a, b and c can be single or multiple respectively. The terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a series of steps or elements. The method, system, article, or apparatus is not necessarily limited to those explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

The related art related to the embodiments of the present application will be described first.

And (one) scheduling data in the New Radio (NR).

In NR, downlink control information (downlink control information, DCI) is carried on a downlink control channel (physical downlink control channel, PDCCH). The DCI of PDCCH bearing of the scheduling PDSCH/PUSCH comprises two domains: a frequency domain resource configuration (frequency domain resource assignment) and a time domain resource configuration (Time domain resource assignment). The terminal equipment determines a time-frequency resource block according to the information of the two domains, and the PDSCH/PUSCH can be transmitted in the resource block.

Depending on the different purposes and content, the DCI is divided into a number of formats and scrambled by different radio network temporary identities (radio network temporary identity, RNTI), e.g. RA-RNTI (ramdom access-RNTI, random access RNTI), P-RNTI (pagging-RNTI, paging RNTI) etc., the PDCCH information of different users is distinguished by their corresponding C-RNTI (cell-RNTI, cell RANTI) information, i.e. the cyclic redundancy check (cyclic redundancy check, CRC) of the DCI is scrambled by the C-RNTI. The base station configures, for the terminal device, an alternative PDCCH set to be monitored for DCI through higher layer signaling, for example radio resource control (radio resource control, RRC) signaling, and since the terminal device does not know in advance on which alternative PDCCH (PDCCH candidate) the base station will receive DCI, but the terminal device knows what downlink control information it is currently expecting to receive according to the base station configuration information, the terminal device tries to decode each alternative PDCCH in the set according to the configuration information, i.e. the terminal device uses the corresponding RNTI to perform CRC check on the information on PDCCH CANDIDATE, and if the CRC check is successful, the terminal device can obtain the successfully decoded DCI information. This set of candidate PDCCHs is a set of search spaces (SEARCH SPACE). The act of the terminal device attempting to decode at each alternative PDCCH to determine whether the corresponding DCI is received is referred to as blind detection (blind detection, BD).

FIG. 1 illustrates a set of search spaces. As shown in FIG. 1, the search space may be divided into a common search space (common SEARCH SPACE) and a terminal-specific search space (terminal-SPECIFIC SEARCH SPACE). One search space may include alternative PDCCHs with the same or different Control Channel Element (CCE) aggregation levels (aggregation level, AL). The aggregation level may include al=1, al=2, al=4, al=8.

One set of search spaces is made up of multiple PDCCH CANDIDATE, and different PDCCH CANDIDATE may overlap each other. In addition, the network side may configure multiple search spaces for the terminal device at the same time, for detecting DCI in different formats or DCI carrying different control information. These search spaces may not overlap, may overlap partially or completely, that is, the candidate PDCCHs constituting different search spaces may overlap each other.

If the terminal equipment successfully detects the DCI on the PDCCH in a blind way, the PDSCH time-frequency resource and/or the PUSCH time-frequency resource indicated by the DCI for the terminal equipment can be obtained. The terminal device can perform downlink reception on the PDSCH or perform uplink transmission on the PUSCH.

And (II) TBS determination of PDSCH/PUSCH.

The terminal device first determines a Transport Block Size (TBS) of data received on the PDSCH before decoding the data on the PDSCH. Similarly, before transmitting data on PUSCH, the terminal device first determines the Transport Block Size (TBS) of the data transmitted on PUSCH.

In the related art, in order to determine the TBS on the PDSCH, the terminal device performs the following steps:

Step 1: the number of Resource Elements (REs) allocated to the PDSCH in one slot is determined.

First, the number of REs N' _RE within one physical resource block (physical resource block, PRB) allocated to the PDSCH is determined:

Wherein, Is the number of subcarriers in one PRB in the frequency domain,/> The number of symbols (symbols) allocated to PDSCH in one slot (slot); /(I)The overhead of demodulation reference signals (demodulation REFERENCE SIGNAL, DM-RS) of each PRB in the allocation duration (duration) is determined according to the higher layer parameter or the physical layer parameter, namely, the number of REs occupied by the DM-RS; /(I)Is the overhead of parameters xOverhead in the higher layer information element PDSCH serving cell configuration (IE PDSCH-ServingCellConfig), if not configured/>Then/>Is 0.

Then, the total number of REs N _RE allocated to the PDSCH is determined according to the number of REs in one PRB and the number of PRBs:

N_RE＝min(156,N'_RE)·n_PRB………………………………(2)

where n _PRB is the total number of PRBs allocated to the PDSCH of the terminal device.

Step 2: determining a first information bit number N _info:

Where R is a target code rate of PDSCH, Q _m is a modulation order of PDSCH, and v is a layer number.

Step 3: and performing operations such as quantization table lookup according to N _info to obtain TBS of the transmission block in one time slot of the PDSCH.

If PDSCH is scheduled through DCI format 1_0 and CRC is scrambled by P-RNTI or RA-RNTI or MsgB-RNTI, then a scaling factor (scaling factor) is also multiplied in equation (3) of step 2, namely:

The value of the scaling factor S is determined according to the TB scaling field in the DCI. Table 1 shows the values of the TB scaling field and the corresponding scale factors S.

Table 1: correspondence between the value of the TB scaling field and the scaling factor S:

TB scaling field	Scaling factor S
		00	1
01	0.5
		10	0.25
11

The method of determining the TBS of data on PUSCH by the terminal device is the same principle as the method of determining the TBS of data on PDSCH and is not repeated here.

And (III) duplex mode.

Currently, frequency division duplexing (frequency division duplex, FDD) and time division duplexing (time division duplex, TDD) exist in NR.

(1)FDD：

As shown in the FDD resource in fig. 2, downlink transmission may be performed on a downlink bandwidth portion (DL BWP), where DL is an english abbreviation of downlink, BWP is an english abbreviation of bandwidth part, or uplink transmission may be performed on an uplink BWP (UL BWP), where UP is an english abbreviation of uplink, of the slot 0, where DL BWP and UL BWP are located on different carriers and are separated in the frequency domain.

(2)TDD：

As shown in the TDD resources in fig. 2, the center frequency point of DL BWP and UL BWP is the same, and bandwidths of DL BWP and UL BWP may be the same or different. At the same time, the terminal device can only perform uplink transmission or downlink transmission. For example, on the time slot 0, only downlink transmission can be performed, on the time slot 4, only uplink transmission can be performed, and the time slot 3 is a flexible time slot, which can be used for uplink transmission or downlink transmission, but cannot be performed simultaneously. The minimum granularity of the uplink and downlink transmission switching is a symbol, for example, the slot 3 is a flexible slot, and is composed of 14 or 12 orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, wherein the first M symbols are downlink symbols, the last N symbols are uplink symbols, the middle 14-M-N (or 12-M-N) symbols are flexible symbols, M and N are integers, 0< = M < = 14,0< = N < = 14, and m+n < = 14. The downlink symbol is used for downlink transmission, the uplink symbol is used for uplink transmission, the flexible symbol can be used for uplink transmission and downlink transmission, and the specific transmission direction can be notified to the terminal equipment by the base station through RRC signaling or DCI scheduling.

Compared with FDD, TDD occupies less frequency domain resources, but uplink transmission delay increases because uplink and downlink transmissions cannot be simultaneously performed in TDD.

(3)SBFD：

To address the latency problem of TDD, flexible duplexing is being discussed in the standard, which may be understood as complementary TDD (complementary TDD, C-TDD), or as Full duplex (Full duplex), or by other names such as SBFD. At present, SBFD is discussed more, and the core of SBFD is to configure uplink transmission resources and downlink transmission resources on a certain symbol or time slot of the TDD system. For example, as shown by SBFD resources in fig. 2, in the time slot 0, there is a section of frequency domain resource in the downlink BWP, and uplink transmission can be performed on the frequency domain resource, so that uplink transmission can be performed on the time slot 0, and the time delay of uplink transmission is reduced, and this section of frequency domain resource is generally called as uplink subband. At this time, on the slot 0, downlink transmission is also possible. The base station can simultaneously perform uplink and downlink transmission on the time slot 0. The terminal device may also perform uplink and downlink transmission simultaneously on the time slot 0, which is called a full duplex terminal device. The terminal device may also perform only uplink or downlink transmission on the time slot 0, and is called a half duplex terminal device. SBFD compared with TDD, uplink resources are increased, and uplink coverage can be increased.

(IV) SBFD System.

In the current standard discussion, there are four designs for SBFD systems:

(1) The time-frequency resource information of the SBFD sub-band is transparent to the terminal device, that is, the time-frequency resource information of the SBFD sub-band is not notified to the terminal device. No new terminal device behavior is introduced.

(2) The time-frequency resource information of the SBFD sub-band is transparent to the terminal device, that is, the time-frequency resource information of the SBFD sub-band is not notified to the terminal device. A new terminal device behavior is introduced for the new supported SBFD terminal device.

(3) And the time domain resource information of SBFD sub-bands is notified to the terminal equipment. A new terminal device behavior is introduced for the new supported SBFD terminal device.

(4) And the time-frequency domain resource information of SBFD sub-bands is notified to the terminal equipment. A new terminal device behavior is introduced for the new supported SBFD terminal device.

In the above design (4), the base station notifies the terminal device supporting SBFD of the time-frequency domain resource information of SBFD subbands, and the terminal device supporting SBFD can use the information to optimize its own transmission behavior, thereby improving performance.

In SBFD systems, for downlink timeslots configured with uplink subbands (e.g., timeslots 0-2 in SBFD resources in fig. 2), if the PDSCH to be scheduled spans the uplink subband (i.e., a portion of the PRBs allocated to the PDSCH are located in the uplink subband), the terminal device may avoid the uplink subband for PDSCH reception. Similarly, for an uplink timeslot configured with a downlink sub-band, if a PUSCH to be scheduled spans the downlink sub-band (i.e., a part of PRBs allocated to the PUSCH is located in the downlink sub-band), the terminal device may avoid the downlink sub-band to perform PUSCH reception.

In the SBFD system, for the downlink time slot configured with the uplink sub-band, the related technology does not consider the resources occupied by the uplink sub-band when determining the TBS, so that the number of PRBs actually used by the terminal equipment is different from the number of PRBs indicated in the DCI, further, the code rate of actual transmission is increased, and the transmission performance is affected. Similarly, for uplink timeslots in which downlink subbands are configured, the related art does not consider resources occupied by the downlink subbands when determining TBS, and thus similar problems may also result.

Based on the above, the embodiment of the application provides a TBS determining method and a related device for executing the method. By adopting the embodiment of the application, aiming at the full duplex scene of the sub-band, the situation that the downlink channel is overlapped with the uplink sub-band or the situation that the uplink channel is overlapped with the downlink sub-band is considered when the TBS is determined, thereby improving the accuracy of the TBS and further improving the transmission performance.

Embodiments of the present application are described below with reference to the accompanying drawings.

Referring to fig. 3, a schematic architecture of a mobile communication system to which an embodiment of the present application is applied is shown. The mobile communication system comprises a core network device 110, a radio access network device 120 and at least one terminal device, such as terminal device 130 and terminal device 140 in the figure. The terminal equipment is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the radio access network device on the same physical device, or may integrate the functions of part of the core network device and part of the radio access network device on one physical device. The terminal device may be fixed in position or may be movable. Fig. 3 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 3. The embodiment of the application does not limit the number of the core network equipment, the wireless access network equipment and the terminal equipment included in the mobile communication system.

The wireless access network device is access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved base station eNodeB, a base station in an NR mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc., and the specific technology and the specific device configuration adopted by the wireless access network device are not limited in the embodiments of the present application.

The Terminal device may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), etc.

The radio access network device and the terminal device may be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scenes of the wireless access network equipment and the terminal equipment.

The embodiment of the application can be suitable for downlink signal transmission, uplink signal transmission and device-to-device (D2D) signal transmission. For downlink signal transmission, the transmitting device is a radio access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is a radio access network device. For D2D signal transmission, the transmitting device is a terminal device and the corresponding receiving device is a terminal device. The transmission direction of the signal according to the embodiment of the application is not limited.

Communication between the radio access network device and the terminal device and between the terminal device and the terminal device can be performed through a licensed spectrum (licensed spectrum), communication can be performed through an unlicensed spectrum (unlicensed spectrum), and communication can be performed through both the licensed spectrum and the unlicensed spectrum. The radio access network device and the terminal device can communicate with each other through a frequency spectrum of 6G or less, can communicate through a frequency spectrum of 6G or more, and can communicate by using the frequency spectrum of 6G or less and the frequency spectrum of 6G or more simultaneously. The embodiment of the application does not limit the spectrum resources used between the wireless access network equipment and the terminal equipment.

Based on the system architecture, the network device can notify the time-frequency domain resource information of SBFD sub-bands to the terminal device supporting SBFD, and the terminal device supporting SBFD can optimize its own transmission behavior by using the information, so as to improve performance.

Based on the system architecture shown in fig. 3, fig. 4 shows a TBS determining method implemented at a terminal device side according to an embodiment of the present application. The method may be performed on a terminal device. The terminal device may be a SBFD-capable terminal device. In the method, the terminal device may determine the number of PRBs used for transmitting the first channel in the first channel according to the positional relationship between the first channel and the first subband (the first subband is not used for transmitting the first channel), and determine the TBS of the transport block carried by the first channel based on the number of PRBs.

Referring to fig. 4, the method may include the steps of:

S401: the terminal equipment acquires time-frequency resource information of a first channel and time-frequency resource information of a first sub-band, which are sent by the network equipment. The first sub-band on at least one symbol in a time domain resource of the first channel is not used for transmitting the first channel.

It is understood that the time-frequency resources of the first channel overlap with the time-frequency resources of the first sub-band, or the time-frequency resources of the first channel in the first time slot overlap with the time-frequency resources of the first sub-band. In the embodiment of the present application, the first channel overlaps the first sub-band in the first timeslot, which may include the following meanings:

(1) As long as the first channel overlaps with the first sub-band in the time-frequency resource of the first time slot, the first channel overlaps with the first sub-band in the time slot;

(2) The first channel overlaps with the first sub-band in the time-frequency resource of the first time slot when the frequency domain resource of M symbols overlaps with the first sub-band, and the ratio M/L of M to L is larger than or equal to the set threshold. Where L is the number of symbols in the slot for the first channel.

(3) The first channel overlaps with the first sub-band in the time-frequency resource of the first time slot when the frequency domain resource of M symbols overlaps with the first sub-band, and the ratio M/L of M to L is larger than the set threshold. Where L is the number of symbols in the slot for the first channel.

Alternatively, the first channel may be a downlink channel, and the downlink channel may be a downlink channel for data transmission, for example, may be PDSCH. The first channel may also be an uplink channel, which may be an uplink channel for data transmission, for example, may be a PUSCH.

Alternatively, the first sub-band may be SBFD sub-bands, for example, UL SBFD sub-bands used for uplink transmission in the downlink time slot, or DL SBFD sub-bands used for downlink transmission in the uplink time slot. One example of DL SBFD subbands may be as shown by SBFD resources in fig. 2.

Taking the first channel as the PDSCH as an example, the time domain resource information in the time-frequency resource information of the first channel may include time domain location information of the PDSCH, where the time domain location information of the PDSCH may include a time domain starting location (such as a location of a starting symbol) of the PDSCH and a time domain length (such as the number of symbols). If the transmission is repeated, the time domain starting position and the time domain length of the PDSCH are those in one transmission, for example, if the PDSCH is repeated 4 times in 4 slots, the time domain starting position and the time domain length indicated by the time domain resource indication information of the PDSCH are the starting symbol position and the number of symbols in one of the slots. The frequency domain resource information in the time-frequency resource information of the first channel may include frequency domain location information of a PDSCH, which may include the number of Resource Blocks (RBs) and the location of each RB. Wherein, there is a corresponding relation between the RBs and the PRBs, and the corresponding PRBs can be obtained after the RBs are mapped to the physical layer. In some scenarios, RBs are in one-to-one correspondence with PRBs.

Taking the first channel as a PUSCH as an example, the time domain resource information in the time-frequency resource information of the first channel may include time domain location information of the PUSCH, where the time domain location information of the PUSCH may include a time domain start location (such as a location of a start symbol) of the PUSCH and a time domain length (such as a number of symbols). If the transmission is repeated, the time domain starting position and the time domain length of the PUSCH are the time domain starting position and the time domain length in the first transmission, or the time domain starting position and the time domain length of the PUSCH are the time domain starting position and the time domain length in the first transmission. The frequency domain resource information in the time-frequency resource information of the first channel may include frequency domain location information of PUSCH, which may include the number of RBs and a location of each RB.

Taking the first sub-band as SBFD sub-bands as an example, the time domain resource information in the time-frequency resource information of the first sub-band may include SBFD slot index and/or SBFD symbol index, and the frequency domain resource information in the time-frequency resource information of the first sub-band may include SBFD slot and/or frequency domain position information of SBFD sub-bands in SBFD symbols.

SBFD slots refer to slots used by the network device to perform SBFD operations, and SBFD symbols refer to symbols used by the network device to perform SBFD operations. SBFD operation refers to that on a certain frequency band at the same time, there is both an uplink sub-band and a downlink sub-band (the two sub-bands are not overlapped), and the network device with full duplex capability performs transmission and reception simultaneously. It is common for terminal devices in a network to have only half duplex capability, i.e. to transmit in either the uplink or the downlink sub-band at the same time. SBFD slots may be part of the uplink slots configured in the TDD parameters or part of the downlink slots configured in the TDD parameters. It is also understood that SBFD slots are one type of slots other than the downlink slots, uplink slots, flexible slots configured in the TDD parameter.

Optionally, the terminal device may also obtain other transmission parameters of the first channel from the network device. The transmission parameters related to determining the TBS may include a modulation and coding strategy (modulation and coding scheme, MCS), a number of layers v when performing multiple input multiple output (multiple input multiple output, MIMO) transmission, and further may further include a repetition number K (K is an integer greater than or equal to 1). The MCS may be used to determine the modulation order Q _m of the PDSCH or PUSCH and the coding rate R, and the repetition number K may determine the number of times to be transmitted repeatedly, where k=1 indicates no repeated transmission. Alternatively, the above transmission parameters may be carried in RRC signaling or DCI.

In a possible implementation manner, the time-frequency resource information of the first channel may be carried in RRC signaling or may be carried in physical layer signaling, for example, by carrying DCI on PDCCH to indicate the time-frequency resource information of the first channel.

S402: and the terminal equipment determines the number of REs in the first PRB of the first channel according to the time domain resource information of the first channel. This step is an optional step.

Alternatively, taking the first channel as an example of the PDSCH, the number of REs in the first PRB of the first channel may be determined by referring to the method for determining the number of REs in one PRB of the PDSCH in the related art. The first PRB is any PRB in PRBs occupied by a first channel. The first PRB occupies 12 subcarriers in the frequency domain, and the length in the time domain is the number of OFDM symbols allocated to the PDSCH in one slot.

For example, taking the first channel as the PDSCH, the following formula may be used to determine the number of REs in the first PRB of the PDSCH:

Wherein, Is the number of subcarriers within one PRB,/> The number of symbols (symbols) allocated to the PDSCH in one slot (slot) is indicated by the time domain resource information of the PDSCH; /(I)The overhead of the DMRS of each PRB over the allocated duration (duration), i.e., the number of REs occupied by the DMRS, is determined according to the higher layer parameter or the physical layer parameter; /(I)Indicated by higher layers, if not configured/>Then/>

Optionally, the embodiment of the present application may be further directed to SBFD scenesAnd optimizing so that the TBS can be more suitable for the total number of transmission resources and the transmission performance is ensured.

In a possible implementation manner, the number of REs in the first PRB of the first channel satisfies the following formula:

Wherein N' _RE is the number of REs in the first PRB of the first channel, For the number of subcarriers within one PRB,/>For the number of symbols allocated to said first channel in a slot,/>For the RE number of DMRS on one PRB,/>Configured by higher layers.

Wherein,And/>, configured by higher layers in related artUnlike, in the related art/>For determining the number of REs in one PRB for a second channel, which is different from the first channel in the embodiment of the present application, the frequency domain resources of all symbols in the second channel do not overlap with the first sub-band (e.g., SBFD sub-bands). In other words, taking PDSCH as an example, if all downlink symbols in PDSCH are not overlapped with SBFD subbands, or no SBFD subbands are configured on the network side, in determining the number of REs in one PRB of the PDSCH, the/>, configured by higher layers in the related art, may be usedIf all or part of downlink symbols in PDSCH overlap SBFD sub-bands, the optimized/>, of the embodiment of the application can be used when determining the RE number in one PRB of the PDSCH

In a possible implementation manner, the network device instructs the terminal device to determine the number of REs in the first PRB of the first channel according to the above formula (6) in a scheduling signaling for scheduling the first channel, where the scheduling signaling may be RRC signaling or DCI.

In a possible implementation, the terminal device determines the number of REs in the first PRB of the first channel according to the above formula (6) as long as the frequency domain resource of the first channel overlaps with the first subband.

In another possible implementation manner, the terminal device may determine the number of REs in the first PRB of the first channel according to the above formula (6) only when a certain condition is met. For example, the condition may be: the ratio of M1 to L1 (M1/L1) is greater than or equal to a first threshold, where L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1. The embodiment of the application does not limit the condition.

For example, the first ratio (M1/L1) may be compared to a set threshold, and if the first ratio (M1/L1) is greater than the set threshold, the optimized embodiment of the present application may be used in determining the TBSOtherwise/>, in the related art can be usedOr/>

In a possible implementation manner, the embodiment of the application is optimizedThe value of (2) may be determined from the relationship between the first ratio (M1/L1) and the set threshold. Wherein M1 and L1 have the same meaning as above.

Exemplary, the value interval and the value of the first ratio (M1/L1) can be configuredThe corresponding relation between the values of (2) can be configured to the terminal equipment by the network side or is agreed in advance. The terminal device can determine/> by inquiring the corresponding relation according to the value interval where the first ratio is locatedIs a value of (2). Table 2 shows exemplary values of a first ratio (M1/L1) and/>Corresponding relation between the values of (2).

TABLE 2

Optionally, the embodiment of the application is optimizedThe set of values may be a new set configured for SBFD slots. For example, different/>, can be configured according to the different slot typesA set of values. The slot types may include SBFD slots, uplink slots (UL only), downlink slots (DL only), flexible slots, and the like.

Alternatively, SBFD slots and uplink slots may correspond to the sameA set of values. The set may be in the related art/>The new value is added on the basis of the set of values, and the new value can also be formed by/>, in the related technologyA set of values.

Alternatively, SBFD time slots and downlink time slots may correspond to the sameIs a set of values of (a). The set may be in the related art/>The new value is added on the basis of the set of values, and the new value can also be formed by/>, in the related technologyA set of values.

S403: and the terminal equipment determines the PRB number of the first channel for transmitting the first channel in the first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band.

Alternatively, the terminal device may determine the number of PRBs used for transmitting the first channel in the first slot in the following manner one, two, or three.

Mode one:

The terminal device may subtract the unavailable PRB of the first channel in the first slot from the PRB of the first channel in the first slot indicated by the frequency domain resource information of the first channel, to obtain a number of PRBs of the first channel in the first slot for transmitting the first channel. The unavailable PRBs include PRBs in which a PRB of the first channel indicated by the frequency domain resource information of the first channel overlaps with a PRB of the first slot indicated by the frequency domain resource information of the first subband.

As long as the frequency domain resources of the first channel on one symbol in the first slot overlap with the first subband, the terminal device may determine the number of PRBs used for transmitting the first channel in the first slot by this implementation.

It can be understood that if the number of repeated transmission times k=1 of the first channel or the first channel does not perform repeated transmission, the first time slot is a time slot occupied by one transmission of the first channel; if the first channel is repeatedly transmitted K times in K slots, the first slot is one of the K slots.

Mode two:

The terminal device may subtract the unavailable PRB of the first channel in the first slot from the PRB of the first channel in the first slot indicated by the frequency domain resource information of the first channel when it is determined that the first condition is satisfied.

Alternatively, the first condition may be one of the following conditions:

Condition 1: the ratio of M1 to L1 (M1/L1) is greater than or equal to a first threshold. Wherein L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols corresponding to at least one symbol of the first subband in the first slot, or M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1.

Based on the condition 1, if M1/L1 is greater than or equal to the first threshold, the terminal device subtracts the unavailable PRB of the first channel in the first slot from the PRB of the first channel in the first slot indicated by the frequency domain resource information of the first channel. Optionally, if M1/L1 is smaller than the first threshold, the terminal device may determine the number of PRBs indicated by the frequency domain resource information of the first channel to the number of PRBs of the first channel in the first slot.

It is to be understood that the above condition 1 can also be expressed as: the ratio of M1 to L1 (M1/L1) is greater than the first threshold. Based on the condition, if M1/L1 is greater than the first threshold, the terminal device subtracts the unavailable PRB of the first channel in the first slot from the PRB of the first channel in the first slot indicated by the frequency domain resource information of the first channel. Optionally, if M1/L1 is less than or equal to the first threshold, the terminal device may determine the number of PRBs indicated by the frequency domain resource information of the first channel to the number of PRBs of the first channel in the first slot.

Condition 2: m1 exceeds a set threshold Thr 1. M1 has the same meaning as defined in condition 1.

Condition 3: l1 exceeds the set threshold Thr 2. L1 has the same meaning as defined in condition 1.

Condition 4: m1 exceeds a set threshold Thr1, and L1 exceeds a set threshold Thr 2. The meaning of M1 and the meaning of L1 are the same as defined in condition 1.

The second mode may be adopted to subtract the unavailable PRB of the first channel in the first slot from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the first slot when the number of symbols of the first sub-band is greater or the number of symbols of the first sub-band is relatively high, so that the number of the determined PRBs of the first channel in the first slot is more accurate compared with the first mode, in other words, the number of the PRBs determined by the second mode is more consistent with the number of the PRBs actually available for transmitting the first channel in the first slot.

Mode three:

for M1 symbols, the terminal equipment subtracts unavailable PRBs of the first channel in the first time slot from the PRBs of the first channel indicated by the frequency domain resource information of the first channel in the first time slot to obtain a first PRB number, wherein the first PRB number is the PRB number of the first channel for transmitting the first channel on at least one symbol in the first time slot; for the L1' symbols, the terminal device determines a second PRB number according to the PRB of the first channel in the first time slot indicated by the frequency domain resource information of the first channel. Wherein M1 is the number of symbols of the first channel overlapping the first subband in the first slot, in other words, on the M1 symbols, the frequency domain resource of the first channel overlaps the first subband; l1 is the number of symbols of the first channel in the first slot, L1' =l1-M1.

In S404, the terminal device determines, according to the number of symbols of M1 symbols and the first PRB number, the number of REs used for transmitting the first channel on the M1 symbols, determines, according to the number of symbols of L1' symbols and the second PRB number, the number of REs used for transmitting the first channel on the L1' symbols, and then adds the number of REs used for transmitting the first channel on the M1 symbols to the number of REs used for transmitting the first channel on the L1' symbols, to obtain the number of REs used for transmitting the first channel in the first slot of the first channel.

Optionally, the number of REs on the M1 symbols for transmitting the first channel satisfies the following formula:

the number of REs on the L1' symbols for transmitting the first channel satisfies the following formula:

wherein N _RE,M1 is the number of REs used for transmitting the first channel on the M1 symbols, For the RE number of DMRS over the M1 symbols,/>Configured by higher layers or/>N _RE,L1′ is the number of REs used for transmitting the first channel on the L1' symbols,/>For the RE number of DMRS on the L1' symbols,/>Configured by higher layers or/>N _PRB is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, and n _over _subband is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, where PRBs in the first slot indicated by the frequency domain resource information of the first channel overlap with PRBs in the first slot indicated by the frequency domain resource information of the first subband.

Alternatively, in the third mode, the terminal device may not execute S402.

In the third mode, the number of PRBs and the number of REs can be determined in different manners for the symbols overlapping with the first subband and the symbols not overlapping with the first subband in the first channel, so that compared with the first mode or the second mode, the third mode can make the determined number of REs used for transmitting the first channel in the first time slot of the first channel more accurate, in other words, the number of REs determined in the third mode is more consistent with the number of REs actually used for transmitting the first channel in the first time slot of the first channel.

In a possible manner, the terminal device subtracts the unavailable PRB of the first channel in the first time slot from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the first time slot according to the first indication information sent by the network device, and performs corresponding operation according to the indication of the first indication information, so that the system flexibility can be improved.

Optionally, the first indication information is used to indicate whether the unavailable PRB of the first channel in a slot is subtracted from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the slot. For example, the first indication information may have two possible values, when the value of the first indication information is equal to the first value (such as 1), the method provided by the embodiment of the present application is used for indicating the terminal device to determine the number of PRBs of the first channel in the first time slot, that is, subtracting the unavailable PRBs of the first channel in one time slot from the PRBs of the first channel indicated by the frequency domain resource information of the first channel in the first time slot, and when the value of the first indication information is equal to the second value (such as 0), the method provided by the related art is used for indicating the terminal device to determine the number of PRBs, for example, determining the number of PRBs of the first channel in the first time slot according to the frequency domain resource information of the first channel.

Optionally, the first indication information is used to instruct the terminal device to determine the number of PRBs of the first channel in the first slot according to the method provided by the embodiment of the present application. If the terminal equipment receives the first indication information, determining the number of PRBs of the first channel in the first time slot according to the method provided by the embodiment of the application, otherwise, the terminal equipment can determine the number of PRBs according to the method provided by the related technology, for example, determining the number of PRBs of the first channel in the first time slot according to the frequency domain resource information of the first channel.

Alternatively, the first indication information may be carried in RRC signaling or DCI.

In a possible implementation, the terminal device may subtract out the PRBs overlapping the RB-symbol pattern when determining the number of PRBs of the first channel in the first slot. The RB-symbol pattern is a resource configured by the network device for the terminal device in the related art, which cannot be used for transmitting the first channel (e.g., PDSCH). The RB-symbol pattern may also be referred to as a rate matching pattern. Taking the first channel as the PDSCH as an example, if the frequency domain position of the PDSCH scheduled by the network device overlaps with the RB indicated by the RB-symbol pattern, the network device does not transmit the PDSCH on the RB indicated by the RB-symbol pattern. In the related art, when the terminal device determines the number of PRBs, the RBs are not subtracted, but in the embodiment of the present application, if the frequency domain position of the PDSCH scheduled by the network device overlaps with the RBs of the UL subband, the PDSCH is not transmitted on the overlapping RBs, and the number of PRBs is calculated to be subtracted.

In another possible implementation, the terminal device may subtract the RBs overlapping UL subbands but not the PRBs overlapping the RB-symbol pattern when determining the number of PRBs of the first channel in the first slot.

S404: the terminal equipment determines the RE number of the first channel for transmitting the first channel in the first time slot according to the PRB number of the first channel for transmitting the first channel in the first time slot.

In a possible implementation manner, the terminal device may determine the number of REs used for transmitting the first channel in the first slot according to a method provided by the related art. For example, the number of REs in the first PRB of the first channel may be multiplied by the number of PRBs used for transmitting the first channel in the first slot by the first channel to obtain the number of REs used for transmitting the first channel in the first slot by the first channel; the number of REs of the first channel used for transmitting the first channel in the first slot may also be determined with reference to formula (2), where N' _RE in formula (2) is the number of REs in the first PRB determined in S402, and N _PRB is the number of PRBs determined in S403.

S405: and the terminal equipment determines the TBS of the transmission block borne by the first channel in the first time slot according to the RE quantity of the first channel in the first time slot for transmitting the first channel.

In a possible implementation manner, the terminal device may determine the size of the transport block of the first channel in the first slot according to a method provided by the related art. For example, the terminal device may calculate an intermediate value N _info according to the formula (3) according to the number of REs determined in S404, and then perform operations such as quantization look-up table according to N _info to obtain the TBS of the transport block of the first channel in one slot. Further, if PDSCH is scheduled through DCI format 1_0 and CRC is scrambled by P-RNTI or RA-RNTI or MsgB-RNTI, a median value N _info may be calculated according to equation (4) by introducing a scale factor S, and then quantization look-up table or the like is performed according to N _info to obtain TBS of a transport block in one slot of the first channel.

Optionally, the embodiment of the application can further optimize the scaling factor S aiming at SBFD scenes, so that the TBS can be more adapted to the total number of transmission resources, and the transmission performance is ensured.

In one possible implementation manner, the terminal device may determine a first intermediate value according to the number of REs used for transmitting the first channel in the first time slot, the first scale factor, the coding rate of the first channel, the modulation order of the first channel, and the layer number, and look up a table according to the first intermediate value to obtain the TBS of the transport block carried on the first channel in the first time slot. The first scale factor in the embodiment of the present application is different from the second scale factor in the related art, and the second scale factor in the related art is used for determining the TBS for the second channel, where the second channel is different from the first channel in the embodiment of the present application, and frequency domain resources of all symbols in the second channel are not overlapped with the first sub-band (such as SBFD sub-bands). In other words, taking PDSCH as an example, if all downlink timeslots in PDSCH do not overlap with SBFD subbands or no SBFD subbands are configured on the network side, a scale factor indicated by the network device in the related art may be used in determining TBS of the PDSCH; if all or part of the downlink slots in the PDSCH overlap SBFD subbands, then the optimized scaling factor indicated by the network device in the embodiment of the present application may be used in determining the TBS for that PDSCH.

Optionally, as long as the frequency domain resource of the first channel in the first time slot overlaps with the first sub-band, the terminal device may determine the TBS using the optimized first scale factor provided by the embodiment of the present application.

Alternatively, the terminal device may determine the TBS by using the optimized scaling factor provided by the embodiment of the present application when a certain condition is met. For example, the condition may be: the ratio of M1 to L1 (M1/L1) is greater than or equal to a first threshold, where L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1. The embodiment of the application does not limit the condition.

Optionally, the value of the scaling factor optimized according to the embodiment of the present application may be determined according to the relationship between the first ratio (M1/L1) and the set threshold. Wherein M1 and L1 have the same meaning as above.

For example, a correspondence relationship between a value interval of the first ratio (M1/L1) and a value of the scale factor may be configured. The corresponding relation can be configured to the terminal equipment by the network side or is agreed in advance, and the terminal equipment can determine the value of the scale factor by inquiring the corresponding relation according to the value interval where the first scale value is located. Or the corresponding relation is stored at the network equipment side, and the network equipment can determine the value of the scale factor by inquiring the corresponding relation according to the value interval where the first scale value is located, and then send the value of the scale factor to the terminal equipment.

Optionally, the optimized first scale factor according to the embodiment of the present application may be carried in RRC signaling or DCI.

Optionally, a new value may be added to the set of values of the scaling factor provided by the related art, such as s=0, for determining the TBS for PDSCH or PUSCH that does not overlap with SBFD subbands.

In the above flow of the present application, for the full duplex scene of the sub-band, the terminal device considers the overlapping situation of the first channel and the first sub-band when determining the TBS, and when determining the number of PRBs of the first channel in the first slot, the terminal device not only determines the number of PRBs of the first channel used for transmitting the first channel in the first slot according to the frequency domain resource information of the first channel but also according to the frequency domain resource information of the first sub-band, so that the determined TBS is more suitable for the transmission resources of the first channel, improving the accuracy of the TBS, and further ensuring the transmission performance.

In the embodiment of the present application, the transport block may be repeatedly transmitted in K slots of the first channel, where K is called the repetition number. Such repeated transmission may also be referred to as slot level repeated transmission, where each transmission may correspond to L OFDM symbols (L is the time domain length indicated by the time domain resource of the first channel), and each transmission may send one transport block, i.e. one transport block may be repeated for K times, where some of the K times of transmission may use resources overlapping with the SBFD sub-band and some of the K times of transmission may use resources not overlapping with the SBFD sub-band.

Fig. 5 illustrates a schematic diagram of repeated transmission with a number of repeated transmissions k=4, and the transport block TB1 is transmitted in the time slot 1, the time slot 2, the time slot 3 and the time slot 4 of the first channel, respectively. Alternatively, in each slot, the time domain starting position S and the length L of the transport block TB1 are the same.

For the above-mentioned repeated transmission scenario, in one possible implementation manner, the size of the transport block in the remaining time slots except the first time slot in the K time slots of the first channel is the same as the size of the transport block in the first time slot. In other words, the TBS of the transport block carried on the first channel in each of the K slots except the first slot is the same as the TBS of the transport block carried on the first channel in the first slot. Wherein the first channel overlaps the first sub-band in the first time slot, and the method for determining the TBS of the transport block in the first time slot can be seen in the foregoing embodiments. In other words, if the first slot of the K slots of the first channel overlaps with the SBFD sub-bands, the TBS of the transport block in each of the K slots of the first channel is the same as its TBS in the first slot of the first channel.

Taking the first channel as PDSCH as an example, if PDSCH on slot 1 overlaps UL subband, and neither slot 2-4 overlaps UL subband, in the embodiment of the present application, it may be specified that the TBS of a transport block in slot 2-4 is determined according to the TBS of the transport block in slot 1.

Optionally, for the above scenario of repeated transmission, if the second slot of the K slots of the first channel is not overlapped with the first subband, the TBS of the transport block in each of the K slots of the first channel is the same as the TBS in the second slot of the first channel.

Alternatively, the TBS of each of the K slots of the transport block is determined according to the TBS of the transport block in the slot overlapping the first subband in the K slots, which may be specified by a protocol, or whether the transport block is configured on the network side, which is not limited by the embodiment of the present application.

For the above scenario of repeated transmission, in another possible implementation manner, the TBS of the transport block in each of the K timeslots may be determined separately, then the maximum value or the minimum value of the TBS of the transport block in the K timeslots is selected, and the selected maximum value or the minimum value of the TBS is determined as the TBS of the transport block in each of the K timeslots. After the terminal device determines the TBS of the transport block carried on the first channel in the first time slot according to the foregoing method, the terminal device may determine the TBS of the transport block carried on the first channel in each of the remaining time slots, and then select a maximum value or a minimum value of the TBSs of the transport block carried on the first channel in the K time slots, and determine the maximum value or the minimum value as the TBS of the transport block carried on the first channel in each of the K time slots.

For the first slot of the K slots, if the slot overlaps with the first subband, the TBS of the transport block in the slot may be determined as shown in fig. 4. For other slots of the K slots for repeated transmission, the TBS of the transport block in these slots for repeated transmission may be determined in the manner described below.

In a possible implementation manner, taking a time slot for repeated transmission as a second time slot as an example, the terminal device may determine, according to frequency domain resource information of the first channel and frequency domain resource information of the first subband, the number of PRBs used for transmitting the first channel in the second time slot by the first channel, and determine, according to the number of PRBs used for transmitting the first channel in the second time slot by the first channel, the number of REs used for transmitting the first channel in the second time slot by the first channel; and determining the TBS of the transmission block carried in the first channel in the second time slot according to the number of REs used for transmitting the first channel in the second time slot.

Optionally, determining the number of PRBs used for transmitting the first channel in the second slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first subband may be implemented in the following manner: the unavailable PRBs of the first channel in the second slot are subtracted from the PRBs of the first channel in the second slot indicated by the frequency domain resource information of the first channel. The unavailable PRBs include PRBs in which PRBs in the second slot indicated by the frequency domain resource information of the first channel overlap with PRBs in the second slot indicated by the frequency domain resource information of the first subband.

Alternatively, in the above process, subtracting the unavailable PRB of the first channel in the second slot from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the second slot may be performed if the second condition is met. Optionally, the second condition includes: the ratio of M2 to L2 is greater than or equal to a second threshold, L2 is the number of symbols of the first channel in the second slot, M2 is the number of symbols of the first channel overlapping the first subband in the second slot, M2 and L2 are integers greater than or equal to 1, and M2 is less than or equal to L2. Alternatively, if the second condition is not met, the TBS may be determined according to the method provided by the related art.

Alternatively, subtracting the unavailable PRB of the first channel in the second slot from the PRB of the first channel indicated by the frequency domain resource information of the first channel in the second slot may be performed if the third condition is satisfied. Optionally, the third condition includes: the ratio of K 'to K is greater than or equal to a third threshold, and in each of the K' slots, at least one frequency domain resource on a symbol overlaps with the first subband, in other words, K 'is an integer greater than or equal to 1, where K' is less than or equal to K. That is, the first channel overlaps the first sub-band in each of the K' slots. Alternatively, if the third condition is not met, the TBS may be determined according to the method provided by the related art.

In some scenarios, where the number of repeated transmissions is K, a data block may be cut into K portions, with only a portion of each transmission being transmitted. Fig. 6 exemplarily shows a repeated transmission diagram with a repeated transmission number k=4, the transmission block TB1 is divided into four blocks, the first block is transmitted in the time slot 1, the second block is transmitted in the time slot 2, and so on. Optionally, in each time slot, the time domain start position S and the length L of the data transmission are the same.

In this case, in one possible implementation manner, for each slot, the number of PRBs used for transmitting the first channel in the slot may be determined according to the foregoing method. In determining the number of REs of the first channel in the first slot according to the number of PRBs used for transmitting the first channel in one slot of the first channel, it may be calculated according to the following formula:

N_RE＝K·min(156,N′_RE)·n_PRB…………………(9)

Where N _RE is the number of REs of the first channel in the first slot, K is the number of repetitions, N' _RE is the number of REs within one PRB allocated to the first channel, and N _PRB is the number of PRBs of the first channel in the first slot.

Other steps may refer to implementations in the related art, and may also refer to implementations in embodiments of the present application.

In other retransmission scenarios, the number of retransmissions is K, which corresponds to K time units, e.g. K time slots, respectively, and the transport block TB1 is divided into K blocks, which are transmitted on K retransmission resources, respectively. Taking K time slots as an example, in K1 time slots in the K time slots, the first channel overlaps the first sub-band, and in K2 time slots in the K time slots, the first channel does not overlap the first sub-band. Wherein k1+k2=k, K is an integer greater than 1, and K1 and K2 are integers greater than 1 or equal to 1.

In this case, in one possible implementation manner, for each of K1 slots, the number of PRBs and the number of REs of the first channel in the slot for transmitting the first channel may be determined according to the method provided in the embodiment of the present application, for K2 slots, the number of PRBs and the number of REs of the first channel in the slot may be determined according to the method provided in the related art, and then the number of REs of the first channel in all K slots may be added, and based thereon, the TBS of the transport block may be determined.

In another possible implementation manner in the above scenario, if in a time slots of K1 time slots, the first channel overlaps with the first subband, and the ratio M/L is greater than or equal to a set threshold, where L is the number of symbols of the first channel in the time slot, and M is the number of symbols of the first channel overlapping with the first subband in the time slot, for each time slot of the a time slots, the method provided by the embodiment of the present application may be used to determine the number of PRBs and the number of REs used for transmitting the first channel in the time slot by the first channel, for other time slots of the K time slots except for the a time slots, the method provided by the related technology may be used to determine the number of PRBs and the number of REs of the first channel in the time slot, and then the number of REs of the first channel in all K time slots may be added, and based on this, the TBS of the transport block may be determined.

In another possible implementation manner in the above scenario, if the ratio K1/K is greater than or equal to the set threshold, the method provided in the foregoing embodiment of the present application may be used to determine, for each of the K slots, the number of PRBs and the number of REs used for transmitting the first channel in the slot by the first channel, and then add the number of PRBs of the first channel in all K slots, and determine the TBS of the transport block based on this. Otherwise, for each of the K slots, determining the number of PRBs and the number of REs of the first channel in the slot by using a method provided by the related art, and then adding the numbers of REs of the first channel in all the K slots, and determining the TBS of the transport block based thereon.

In some embodiments of the present application, in determining the TBS of the data block transmitted by the first channel, the optimized embodiments of the present application may be used in determining the number of REs in the first PRB of the first channelThe remaining operations may be implemented in accordance with the related art. Reference may be made to the foregoing embodiments for a specific implementation and are not repeated here.

In other embodiments of the present application, in determining the TBS of the data block transmitted by the first channel, the scaling factor optimized by the embodiments of the present application may be used in determining the first intermediate value N _info, and the rest of the operations may be implemented according to the related art. Reference may be made to the foregoing embodiments for a specific implementation and are not repeated here.

Fig. 7 shows a flowchart of a terminal device and network device interaction in an embodiment of the present application. As shown, the process may include the steps of:

Step 701: the network device sends the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band to the terminal device.

Step 702: and the terminal equipment determines the TBS of the transmission block borne by the first channel in the first time slot according to the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band. The detailed implementation may be found in fig. 4 and related matters of the embodiments of the present application, and are not repeated here.

Step 703: and the terminal equipment performs data transmission according to the scheduling signaling of the network equipment.

In other embodiments of the present application, the TBS of the transport block in the first channel may also be determined according to the same principle on the network device side. Fig. 8 shows a TBS determining method implemented at a network device side according to an embodiment of the present application.

As shown in fig. 8, the process may include the steps of:

s801: the network equipment allocates time-frequency resource information of a first channel and time-frequency resource information of a first sub-band for the terminal equipment. The first sub-band on at least one symbol in a time domain resource of the first channel is not used for transmitting the first channel.

For a description of the first channel and the first sub-band, reference may be made to the previous embodiments.

The description of the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band can be found in the foregoing embodiments.

S802: the network device determines the number of REs in the first PRB of the first channel according to the time domain resource information of the first channel. This step is an optional step.

S803: the network device determines the number of PRBs of the first channel used for transmitting the first channel in the first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band.

S804: the network device determines the number of REs used for transmitting the first channel in the first time slot according to the number of PRBs used for transmitting the first channel in the first time slot.

S805: the network device determines the TBS of the transmission block carried on the first channel in the first time slot according to the RE quantity of the first channel in the first time slot for transmitting the first channel.

The specific implementation of S802 to S805 in the above-described flow is the same as the related operation principle executed by the terminal device in the above-described embodiment, and is not repeated here.

In the above flow of the present application, for the full duplex scene of the sub-band, when determining the TBS, the network device considers the situation that the first channel overlaps the first sub-band, and when determining the number of PRBs of the first channel in the first slot, the network device determines the number of PRBs of the first channel in the first slot according to not only the frequency domain resource information of the first channel but also the frequency domain resource information of the first sub-band, so that the number of PRBs of the first channel used for transmitting the first channel in the first slot can be determined, thereby making the determined TBS more suitable for the transmission resources of the first channel, improving the accuracy of the TBS, and further ensuring the transmission performance.

Based on the same technical concept, the embodiment of the application also provides a communication device, which can realize the functions realized by the terminal equipment or the network equipment in the previous embodiment. As shown in fig. 9, the communication apparatus 900 may include a processing unit 901 and a transceiving unit 902.

The processing unit 901 is configured to: determining the number of Physical Resource Blocks (PRBs) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band, wherein the first sub-band on at least one symbol in the time domain resources of the first channel is not used for transmitting the first channel, and the first time slot is a time slot in which the time domain resources of the first channel are located or one of at least two time slots in which the time domain resources of the first channel are located; determining the number of Resource Elements (REs) of the first channel for transmitting the first channel in the first time slot according to the number of PRBs of the first channel for transmitting the first channel in the first time slot; and determining the TBS of the transmission block borne on the first channel in the first time slot according to the number of REs used for transmitting the first channel in the first time slot.

It can be understood that the communication device provided in the embodiment of the present application can implement all the method steps implemented by the terminal device in the embodiment of the method, and can achieve the same technical effects, and the same parts and beneficial effects as those in the embodiment of the method are not described in detail herein.

For ease of understanding, only the structures required by the communications device 1000 to perform the methods of the present application are shown in fig. 10, and the present application is not limited to communications devices that may be provided with additional components. The communication apparatus 1000 may be configured to perform the steps performed by the relevant device in the above-described method embodiments, for example, the relevant device may be a terminal device or a network device.

The communication device 1000 may include a transceiver 1001, a memory 1003, and a processor 1002, and the transceiver 1001, the memory 1003, and the processor 1002 may be connected by a bus 1004. The transceiver 1001 may be for communication by a communication device, such as for transmitting or receiving signals. The memory 1003 is coupled to the processor 1002 and can be used to store programs and data necessary for the communication device 1000 to perform various functions. The above memory 1003 and the processor 1002 may be integrated or independent.

The transceiver 1001 may be, for example, a communication port, such as a communication port (or interface) between network elements for communication. The transceiver 1001 may also be referred to as a transceiving unit or a communication unit. The processor 1002 may be implemented by a processing chip or processing circuit. The transceiver 1001 may receive or transmit information wirelessly or by wire.

In addition, according to the actual use requirement, the communication device provided by the embodiment of the application can include a processor, and the processor invokes an external transceiver and/or a memory to realize the functions or steps or operations. The communication device may also include a memory that is invoked by the processor and executes a program stored in the memory to perform the functions or steps or operations described above. Alternatively, the communication device may include a processor and a transceiver (or a communication interface), where the processor invokes and executes a program stored in an external memory to perform the functions or steps or operations described above. Or the communication device may also include a processor, memory, and transceiver.

Based on the same concept as the above method embodiments, in an embodiment of the present application, a computer readable storage medium is further provided, on which a program instruction (or called a computer program, an instruction) is stored, where the program instruction when executed by a processor causes the computer to perform an operation performed by a terminal device or a network device in any one of possible implementation manners of the above method embodiments, method embodiments.

Based on the same conception as the above method embodiments, the present application also provides a computer program product comprising program instructions which, when being invoked by a computer for execution, may cause the computer to implement the operations performed by the terminal device or the network device in any one of the possible implementation manners of the above method embodiments.

Based on the same conception as the above method embodiments, the present application also provides a chip or a chip system, the chip being coupled with the transceiver for implementing the operations performed by the terminal device or the network device in any one of the possible implementations of the above method embodiments. The chip system may include the chip, as well as components including memory, communication interfaces, and the like.

Based on the same conception as the method embodiment, the embodiment of the application also provides a communication system. Optionally, the communication system includes a terminal device and a network device, where the terminal device may perform the operation of the terminal device in the method embodiment, and the network device may perform the operation of the network device in the method embodiment.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method for determining a transport block size TBS, comprising:

Determining the number of Physical Resource Blocks (PRBs) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band, wherein the first sub-band on at least one symbol in the time domain resources of the first channel is not used for transmitting the first channel, and the first time slot is a time slot in which the time domain resources of the first channel are located or one of at least two time slots in which the time domain resources of the first channel are located;

Determining the number of Resource Elements (REs) of the first channel for transmitting the first channel in the first time slot according to the number of PRBs of the first channel for transmitting the first channel in the first time slot;

And determining the TBS of the transmission block borne on the first channel in the first time slot according to the number of REs used for transmitting the first channel in the first time slot.

2. The method of claim 1, wherein the determining the number of PRBs used for transmitting the first channel in the first slot for the first channel based on the frequency domain resource information of the first channel and the frequency domain resource information of the first subband comprises:

Subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the first time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the first time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the first time slot.

3. The method of claim 2, wherein the subtracting the unavailable PRBs of the first channel in the first slot from the PRBs of the first channel in the first slot indicated by the frequency domain resource information of the first channel comprises:

Subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by frequency domain resource information of the first channel if a first condition is met;

Wherein the first condition includes: the ratio of M1 to L1 is greater than or equal to a first threshold, L1 is the number of symbols of the first channel in the first slot, M1 is the number of symbols of the first channel overlapping the first subband in the first slot, M1 and L1 are integers greater than or equal to 1, and M1 is less than or equal to L1.

4. A method according to any one of claims 1-3, wherein:

The method further comprises the steps of:

Determining the number of REs in a first PRB of the first channel according to the time domain resource information of the first channel;

The determining, according to the number of PRBs used by the first channel to transmit the first channel in the first slot, the number of REs used by the first channel to transmit the first channel in the first slot includes:

And determining the RE number of the first channel for transmitting the first channel in the first time slot according to the RE number in the first PRB of the first channel and the PRB number of the first channel for transmitting the first channel in the first time slot.

5. The method of claim 4, wherein a number of REs in a first PRB of the first channel satisfies the following formula:

Wherein, For the number of REs in the first PRB of the first channel,/>For the number of subcarriers within one PRB,For the number of symbols allocated to said first channel in a slot,/>For the RE number of DMRS on one PRB,/>Configured by a high level; wherein/>/>, With higher layer configurationDifferently, said/>For determining the number of REs in one PRB for a second channel, the frequency domain resources of all symbols in the second channel do not overlap with the first subband.

6. The method of claim 5, wherein theThe value of (1) is determined according to the relation between a first ratio and a set threshold, wherein the first ratio is M1/L1, M1 is the number of symbols of the first channel overlapped with the first sub-band in the first time slot, and N1 is the number of symbols of the first channel in the first time slot.

7. The method of claim 1, wherein the determining the number of PRBs used for transmitting the first channel in the first slot for the first channel based on the frequency domain resource information of the first channel and the frequency domain resource information of the first subband comprises:

Subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the first time slot to obtain a first PRB number, wherein the first PRB number is the PRB number of the first channel used for transmitting the first channel on at least one symbol in the first time slot;

Determining the RE number used for transmitting the first channel on the M1 symbols according to the symbol number of the M1 symbols and the first PRB number, wherein the M1 symbols are symbols corresponding to the at least one symbol;

Determining the number of REs used for transmitting the first channel on the L1' symbols according to the number of symbols of the L1' symbols and the number of PRBs of the first channel in the first slot indicated by the frequency domain resource information of the first channel, wherein L1' =l1-M1, and L1 is the number of symbols of the first channel in the first slot;

and adding the RE number used for transmitting the first channel on the M1 symbols and the RE number used for transmitting the first channel on the L1' symbols to obtain the RE number used for transmitting the first channel in the first time slot by the first channel.

8. The method of claim 7, wherein:

The number of REs on the M1 symbols for transmitting the first channel satisfies the following formula:

wherein N _RE,M1 is the number of REs used for transmitting the first channel on the M1 symbols, For the RE number of the demodulation reference signal DMRS on the M1 symbols,/>Configured by higher layers or/>For the number of REs used for transmitting the first channel on the L1' symbols,/>For the number of REs of the DMRS on the L1' symbols,Configured by higher layers or/>N _PRB is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, and n _oversubband is the number of PRBs in the first slot indicated by the frequency domain resource information of the first channel, where PRBs in the first slot indicated by the frequency domain resource information of the first channel overlap with PRBs in the first slot indicated by the frequency domain resource information of the first subband.

9. The method of any of claims 2-3, 7-8, wherein subtracting unavailable PRBs of the first channel in the first slot from PRBs of the first channel in the first slot indicated by frequency domain resource information of the first channel comprises:

And subtracting unavailable PRBs of the first channel in the first time slot from PRBs of the first channel in the first time slot indicated by the frequency domain resource information of the first channel according to first indication information sent by network equipment.

10. The method according to any of claims 1-9, wherein if the transport block is repeatedly transmitted in K time slots, the K time slots being K time slots of time slots in which time domain resources of the first channel are located, the K time slots including the first time slot, K being an integer greater than 1, a TBS of the transport block carried on the first channel in each of the K time slots other than the first time slot is the same as a TBS of the transport block carried on the first channel in the first time slot.

11. The method of any of claims 1-9, wherein if the transport block is repeatedly transmitted in K time slots, the K time slots being K time slots of time slots in which time domain resources of the first channel are located, the K time slots including the first time slot, K being an integer greater than 1, the method further comprises:

Respectively determining TBS of the transmission block carried on the first channel in each time slot except the first time slot in the K time slots;

And selecting the maximum value or the minimum value of the TBS of the transmission block carried on the first channel in the K time slots, and determining the maximum value or the minimum value as the TBS of the transmission block carried on the first channel in each time slot in the K time slots.

12. The method of claim 11, wherein the K time slots comprise a second time slot, the second time slot different from the first time slot, the determining the TBS of the transport block carried on the first channel in each of the K time slots other than the first time slot, respectively, comprises:

Determining the number of PRBs of the first channel used for transmitting the first channel in the second time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band;

Determining the number of REs of the first channel for transmitting the first channel in the second time slot according to the number of PRBs of the first channel for transmitting the first channel in the second time slot;

And determining the TBS of the transmission block carried on the first channel in the second time slot according to the RE quantity of the first channel in the second time slot for transmitting the first channel.

13. The method of claim 12, wherein the determining the number of PRBs used for transmitting the first channel in the second slot for the first channel based on the frequency domain resource information of the first channel and the frequency domain resource information of the first subband comprises:

Subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel indicated by frequency domain resource information of the first channel in the second time slot to obtain the number of PRBs of the first channel used for transmitting the first channel in the second time slot, wherein the unavailable PRBs comprise PRBs, indicated by the frequency domain resource information of the first channel, in the second time slot and PRBs, indicated by the frequency domain resource information of the first sub-band, in the second time slot.

14. The method of claim 13, wherein the subtracting the unavailable PRBs of the first channel in the second slot from the PRBs of the first channel in the second slot indicated by the frequency domain resource information of the first channel comprises:

subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a second condition is met;

Wherein the second condition includes: the ratio of M2 to L2 is greater than or equal to a second threshold, L2 is the number of symbols in the second slot of the first channel, M2 is the number of symbols of the first channel overlapping the first subband in the second slot, M2 and L2 are integers greater than or equal to 1, and M2 is less than or equal to L2.

15. The method of claim 13, wherein the subtracting the unavailable PRBs of the first channel in the second slot from the PRBs of the first channel in the second slot indicated by the frequency domain resource information of the first channel comprises:

subtracting unavailable PRBs of the first channel in the second time slot from PRBs of the first channel in the second time slot indicated by frequency domain resource information of the first channel if a third condition is met;

Wherein the third condition includes: the ratio of K 'to K is greater than or equal to a third threshold, each of the K' time slots of the first channel overlaps the first sub-band, K 'is an integer greater than or equal to 1, and K' is less than or equal to K.

16. The method according to any one of claims 1-15, wherein the determining the TBS of the transport blocks carried on the first channel in the first time slot according to the number of REs used by the first channel for transmission of the first channel in the first time slot comprises:

Determining a first intermediate value according to the RE quantity, a first scale factor, the coding code rate of the first channel, the modulation order and the layer number of the first channel, which are used for transmitting the first channel in the first time slot, and performing table lookup according to the first intermediate value to obtain the TBS of the transmission block borne on the first channel in the first time slot;

wherein the first scale factor is different from a second scale factor, the second scale factor is used for determining a TBS for a second channel, and frequency domain resources of all symbols in the second channel are not overlapped with the first sub-band.

17. The method of claim 16, wherein the first scaling factor is determined based on a relationship between a first ratio and a set threshold, the first ratio being M1/L1, the M1 being a number of symbols of the first channel overlapping the first subband in the first slot, the L1 being the number of symbols of the first channel in the first slot.

18. The method of any one of claims 1-17, wherein before the determining the number of physical resource blocks, PRBs, of the first channel for transmission of the first channel in the first time slot based on the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the method further comprises:

and acquiring time-frequency resource information of the first channel and time-frequency resource information of the first sub-band, which are sent by the network equipment.

19. The method of any one of claims 1-17, wherein before the determining the number of physical resource blocks, PRBs, of the first channel for transmission of the first channel in the first time slot based on the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, the method further comprises:

and distributing the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band to the terminal equipment.

20. The method according to any of claims 1-19, wherein the first channel is a physical downlink shared channel, PDSCH, or the first channel is a physical uplink shared channel, PUSCH.

21. A communication device, comprising: a processing unit and a receiving and transmitting unit; the processing unit is used for:

22. The communication device according to claim 21, wherein the processing unit is specifically configured to:

23. The communication device according to claim 22, wherein the processing unit is configured to:

24. The communication device according to claim 21, wherein the processing unit is specifically configured to:

25. The communication device according to any of claims 21-24, wherein the processing unit is further configured to:

And before determining the number of Physical Resource Blocks (PRBs) of the first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of the first sub-band, acquiring the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band, which are transmitted by the network equipment, through the transceiver unit.

26. The communication device according to any of claims 21-24, wherein the processing unit is further configured to:

Before determining the number of Physical Resource Blocks (PRBs) of a first channel used for transmitting the first channel in a first time slot according to the frequency domain resource information of the first channel and the frequency domain resource information of a first sub-band, distributing the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band for terminal equipment; and

And transmitting the time-frequency resource information of the first channel and the time-frequency resource information of the first sub-band to the terminal equipment through the transceiver unit.

27. The communications apparatus of any one of claims 21-26, wherein the first channel is a physical downlink shared channel, PDSCH, or the first channel is a physical uplink shared channel, PUSCH.

28. A communication device, comprising: one or more processors; wherein the instructions of the one or more computer programs, when executed by the one or more processors, cause the communication device to perform the method of any of claims 1-20.

29. A computer readable storage medium, characterized in that the computer readable storage medium comprises a computer program which, when run on a computing device, causes the computing device to perform the method of any of claims 1-20.

30. A chip, characterized in that the chip is coupled to a memory for reading and executing program instructions stored in the memory for implementing the method according to any of claims 1-20.