Method for transport block size determination process

Abstract

A wireless communication method for use in a wireless terminal is disclosed. The wireless communication method includes: determining an intermediate value transmission block size (TBS) of a transmission block transmitted between the wireless terminal and a wireless network node based on multiple transmission parameters, modifying the intermediate TBS in response to at least one event to generate a revised value TBS, and determining a final TBS based on the revised value TBS and a specific step in response to the at least one event, wherein the specific step is determined based on the multiple transmission parameters.

Description

Technical Field

[0001] The present application is generally directed to wireless communications. Background Art

[0002] In the existing Long Term Evolution (LTE) and 5G New Radio (NR) access technology communication systems, the user equipment (UE) determines the transport block size (TBS) for physical uplink shared channel (PUSCH) and physical downlink shared channel (PDSCH) scheduling data. In the physical downlink control channel (PDCCH), the parameter value used to determine the TBS is determined by an information unit, which is configured by a high-level parameter and indicated by downlink control information (DCI), which is transmitted through different DCI formats, and the different DCI formats have a cyclic redundancy check (CRC) scrambled by a specific radio network temporary identifier (RNTI) such as C-RNTI (cell RNTI), CS-RNTI (configuration scheduling RNTI), MCS-C-RNTI (modulation and coding scheme cell RNTI), TC-RNTI (temporary cell RNTI), SI-RNTI (system information RNTI), etc.

[0003] The parameters used to determine the TBS include the number of subcarriers in a physical resource block (PRB), the number of symbols allocated to the PDSCH or PUSCH in a time slot, the total number of PRBs allocated to the UE (n PRB ), the number of resource elements (REs) for each reference signal (RS) per PRB, the amount of overhead configured by higher-level parameters, and the number of MCS and the code rate (R) and modulation order (Q) determined by the configured MCS table m ), and the number of MIMO (Multiple Input Multiple Output) layers. The UE can use the following steps to determine the final TBS:

[0004] In the first step, the UE determines the total number of REs allocated for PDSCH or PUSCH (N) based on the number of allocated PRBs, the number of REs for DM-RS (demodulation RS) per PRB, the amount of overhead per PRB, the number of subcarriers in a PRB, and the number of symbols allocated for PDSCH in a timeslot. RE ).

[0005] In the second step, through N info =N RE ·R·Q m ·υ The intermediate number of information bits obtained (N info ). Then if N info ≤3824, the third step is used as the next step of TBS determination, otherwise, the fourth step is used as the next step of TBS determination.

[0006] In the third step, when N info When ≤3824, TBS is determined as follows:

[0007] - The intermediate number of quantized information bits in

[0008] - Use Table 1 below to find the value not less than N' info The closest TBS.

[0009] Table 1: N info TBS ≤ 3824

[0010]

[0011]

[0012] In the fourth step, when N info When >3824, TBS is determined as follows:

[0013] - The intermediate number of quantized information bits in And the round function rounds the input quantity to the nearest integer.

[0014] if R≤1 / 4

[0015]

[0016] else

[0017] if N′ info >8424

[0018]

[0019] else

[0020]

[0021] end if

[0022] end if.

[0023] The MCS table associated with data scheduling for PUSCH includes two types of MCS tables. If transform precoding is disabled by a high-level parameter, the MCS table available for data transmission in PDSCH can be used for PUSCH. If transform precoding is enabled by a high-level parameter, the MCS table for PUSCH with transform precoding can be used. Transform precoding is associated with a DFT-s-OFDM waveform. Summary of the invention

[0024] The present application relates to a method, system and device for a transport block size determination process.

[0025] The present disclosure relates to a wireless communication method for use in a wireless terminal. The wireless communication method includes:

[0026] determining an intermediate value transport block size (TBS) of a transport block transmitted between the wireless terminal and the radio network node based on the plurality of transmission parameters,

[0027] In response to at least one event, modifying the intermediate TBS to generate a revised value TBS, and

[0028] Determine a final TBS based on the modified value TBS and a specific step in response to at least one event, and

[0029] The specific step is determined based on the multiple transmission parameters.

[0030] Various embodiments may preferably implement the following features:

[0031] Preferably, the multiple transmission parameters include at least one of the following: a downlink control information (DCI) format, a type of transmission mode configured for the wireless terminal, a type of frequency range, a type of radio network temporary identifier (RNTI) for scrambling a cyclic redundancy check (CRC) of the DCI, a number of physical resource blocks (PRBs) for determining an intermediate TBS, a modulation and coding scheme (MCS) index for determining a code rate and a modulation order, the coverage capability of the wireless terminal, a value of a subcarrier spacing, or a value of an average orthogonal frequency division multiplexing (OFDM) symbol duration.

[0032] Preferably, the transmission mode is determined based on one of a user equipment (UE) capability and a UE category.

[0033] Preferably, the number of physical resource blocks is less than or equal to the maximum number of PRBs, wherein the maximum number of PRBs is determined based on at least one of the maximum bandwidth supported by the wireless terminal, the maximum number of symbols per time slot for data scheduling, and the type of transmission mode of the wireless terminal.

[0034] Preferably, the number of physical resource blocks is less than or equal to the maximum number of PRBs, wherein the maximum number of PRBs is determined based on at least one of the maximum bandwidth supported by the wireless terminal, the maximum number of symbols per time slot for data scheduling, and the type of transmission mode of the wireless terminal.

[0035] Preferably, the type of transmission mode of the wireless terminal is associated with at least one of: the maximum bandwidth supported by the wireless terminal, the minimum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the maximum number of antenna ports for transmitting signals, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the battery life of the wireless terminal, the modulation order supported by the wireless terminal, the maximum code rate supported by the wireless terminal, the maximum TBS supported by the wireless terminal, the maximum number of physical resource blocks associated with the bandwidth supported by the wireless terminal, the target block error rate of the transmitted signal, the end-to-end delay supported by the wireless terminal, the number of frequency range FR types supported by the wireless terminal, the coverage enhancement capability of the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, the type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance or a wearable device, or a duplex mode of the wireless terminal.

[0036] Preferably, the final TBS is less than or equal to the maximum TBS.

[0037] Preferably, the maximum TBS is determined based on a plurality of transmission parameters.

[0038] Preferably, the multiple transmission parameters include at least one of a maximum code block size, a maximum code rate supported by the wireless terminal, a maximum code rate of the MCS table, a maximum modulation order supported by the wireless terminal, and a maximum modulation order of the MCS table.

[0039] Preferably, the maximum TBS is one of the elements in the TBS table, the maximum TBS is greater than or equal to the product of the maximum code block size and the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable modulation and coding scheme (MCS) table, the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable MCS table is a value in the range [0.27, 0.7201], and for a low-density parity check (LDPC) basis Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1 , the maximum code block size is equal to 8448.

[0040] Preferably, the maximum TBS is one of the elements in the TBS table, the maximum TBS is greater than or equal to the product of the maximum code block size and the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table, the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and for the LDPC basis Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1 , the maximum code block size is equal to 8448.

[0041] Preferably, the maximum TBS for the first type of transmission mode includes at least one element in the first TBS set, and the maximum TBS for the second type of transmission mode includes at least one element in the second TBS set.

[0042] Preferably, the transport block is transmitted in a physical downlink shared channel, and the first TBS set includes at least one of {1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424, 27376, 51240}.

[0043] Preferably, the transport block is transmitted in a physical uplink shared channel, and the first TBS set includes at least one of {328, 408, 456, 504, 600, 712, 808, 936, 1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424}.

[0044] Preferably, the transport block is transmitted in a physical downlink shared channel, and the second TBS set includes at least one of {8424, 15110, 15370, 15620, 15880, 16140, 27376, 50180, 51220}.

[0045] Preferably, the transport block is transmitted in a physical uplink shared channel, and the second TBS set includes at least one of {3824, 5160, 8424, 25100, 27376}.

[0046] Preferably, the value of any element in the first TBS set is less than or equal to 5160, and the value of any element in the second TBS set is less than or equal to 8848.

[0047] Preferably, the value of any element in the first TBS set is less than or equal to 3840, and the value of any element in the second TBS set is less than or equal to 3840.

[0048] Preferably, the wireless terminal supports LDPC based Figure 2 , and the intermediate TBS or the final TBS is less than or equal to 3824.

[0049] Preferably, at least one event includes: the intermediate TBS is greater than 3824, the wireless terminal supports the LDPC basis Figure 2 , the type of RNTI for scrambling the CRC of the DCI is an RNTI other than the RNTI in Rel-16 NR, or the type of the transmission mode is at least one of the first type of transmission modes including a maximum modulation order less than or equal to 64 quadrature amplitude modulation (QAM).

[0050] Preferably, the specific step comprises using a TBS table to determine the closest TBS that is greater than or equal to the correction value TBS.

[0051] Preferably, each element in the TBS table is different from all elements in the TBS table in Rel-16 NR.

[0052] Preferably, each element in the TBS table is divisible by 3816, and the quotient of the element divided by 3816 is greater than 1.

[0053] Preferably, the final TBS is determined by the following formula:

[0054]

[0055] Among them, C is composed of Sure,

[0056] in is the top function, N i ' nfo is the correction value TBS and is determined by:

[0057]

[0058] Among them, max() is a function to obtain the maximum variable, round() is a function to round the variable to the nearest integer, and N info is the intermediate TBS, and n is determined by:

[0059]

[0060] in is the base function.

[0061] Preferably, the number of physical resource blocks in the signal is quantized by a scaling factor associated with the bandwidth of the bandwidth portion of the wireless terminal.

[0062] Preferably, an MCS table with transform precoding is used to transmit the transport block, and the wireless terminal is configured with a transmission mode associated with at least one of: a type of wireless network temporary identifier for scrambling a cyclic redundancy check of downlink control information, a peak data rate for an uplink and / or downlink, a battery life of the wireless terminal, a modulation order supported by the wireless terminal, a maximum code rate, a maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth configured for a bandwidth portion of the wireless terminal, a target block error rate for transmitting the transport block, an end-to-end delay supported by the wireless terminal, a type of frequency range supported by the wireless terminal, a coverage enhancement capability of the wireless terminal, a power level of the wireless terminal, a processing time capability of the wireless terminal, and a use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, a video surveillance or wearable device, or a duplex mode supported by the wireless terminal.

[0063] Preferably, the cache size used for LDPC rate matching is determined by high-level signaling, which includes at least one of the following: the maximum bandwidth supported by the wireless terminal, the number of physical resource blocks available to the wireless terminal in the bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the peak data rate supported by the wireless terminal, the maximum modulation order supported by the wireless terminal, the bandwidth portion activated for the wireless terminal, or the type of wireless network temporary identifier for scrambling the cyclic redundancy check of the downlink control information.

[0064] The present disclosure relates to a wireless communication method for use in a wireless network node. The wireless communication method comprises:

[0065] sending a signal including a plurality of transmission parameters to a wireless terminal;

[0066] determining a median transport block size (TBS) of a transport block transmitted between the wireless terminal and the radio network node based on the plurality of transmission parameters,

[0067] In response to at least one event, modifying the intermediate TBS to generate a revised value TBS, and

[0068] determining a final TBS based on the modified value TBS and a specific step in response to at least one event,

[0069] Therein, the specific steps are determined based on a plurality of transmission parameters.

[0070] Various embodiments may preferably implement the following features:

[0071] Preferably, the multiple transmission parameters include at least one of the following: a downlink control information (DCI) format, a type of transmission mode configured for the wireless terminal, a type of frequency range, a type of radio network temporary identifier (RNTI) for scrambling a cyclic redundancy check (CRC) of the DCI, a number of physical resource blocks (PRBs) for determining an intermediate TBS, a modulation and coding scheme (MCS) index for determining a code rate and a modulation order, the coverage capability of the wireless terminal, a value of a subcarrier spacing, or a value of an average orthogonal frequency division multiplexing (OFDM) symbol duration.

[0072] Preferably, the transmission mode is determined based on one of a user equipment (UE) capability and a UE category.

[0073] Preferably, the number of physical resource blocks is less than or equal to the maximum number of PRBs, wherein the maximum number of PRBs is determined based on at least one of the maximum bandwidth supported by the wireless terminal, the maximum number of symbols per time slot for data scheduling, and the type of transmission mode of the wireless terminal.

[0074] Preferably, the number of physical resource blocks is less than or equal to the maximum number of PRBs, wherein the maximum number of PRBs is determined based on at least one of the maximum bandwidth supported by the wireless terminal, the maximum number of symbols per time slot for data scheduling, and the type of transmission mode of the wireless terminal.

[0075] Preferably, the type of transmission mode of the wireless terminal is associated with at least one of: the maximum bandwidth supported by the wireless terminal, the minimum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the maximum number of antenna ports for transmitting signals, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the battery life of the wireless terminal, the modulation order supported by the wireless terminal, the maximum code rate supported by the wireless terminal, the maximum TBS supported by the wireless terminal, the maximum number of physical resource blocks associated with the bandwidth supported by the wireless terminal, the target block error rate of the transmitted signal, the end-to-end delay supported by the wireless terminal, the number of frequency range FR types supported by the wireless terminal, the coverage enhancement capability of the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, the type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance or a wearable device, or a duplex mode of the wireless terminal.

[0076] Preferably, the final TBS is less than or equal to the maximum TBS.

[0077] Preferably, the maximum TBS is determined based on a plurality of transmission parameters.

[0078] Preferably, the multiple transmission parameters include at least one of a maximum code block size, a maximum code rate supported by the wireless terminal, a maximum code rate of the MCS table, a maximum modulation order supported by the wireless terminal, and a maximum modulation order of the MCS table.

[0079] Preferably, the maximum TBS is one of the elements in the TBS table, the maximum TBS is greater than or equal to the product of the maximum code block size and the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable modulation and coding scheme (MCS) table, the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable MCS table is a value in the range [0.27, 0.7201], and for a low-density parity check (LDPC) basis Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1 The maximum code block size is equal to 8448.

[0080] Preferably, the maximum TBS is one of the elements in the TBS table, the maximum TBS is greater than or equal to the product of the maximum code block size and the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table, the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and for the LDPC basis Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1 , the maximum code block size is equal to 8448.

[0081] Preferably, the maximum TBS for the first type of transmission mode includes at least one element in the first TBS set, and the maximum TBS for the second type of transmission mode includes at least one element in the second TBS set.

[0082] Preferably, the transport block is transmitted in a physical downlink shared channel, and the first TBS set includes at least one of {1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424, 27376, 51240}.

[0083] Preferably, the transport block is transmitted in a physical uplink shared channel, and the first TBS set includes at least one of {328, 408, 456, 504, 600, 712, 808, 936, 1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424}.

[0084] Preferably, the transport block is transmitted in a physical downlink shared channel, and the second TBS set includes at least one of {8424, 15110, 15370, 15620, 15880, 16140, 27376, 50180, 51220}.

[0085] Preferably, the transport block is transmitted in a physical uplink shared channel, and the second TBS set includes at least one of {3824, 5160, 8424, 25100, 27376}.

[0086] Preferably, the value of any element in the first TBS set is less than or equal to 5160, and the value of any element in the second TBS set is less than or equal to 8848.

[0087] Preferably, the value of any element in the first TBS set is less than or equal to 3840, and the value of any element in the second TBS set is less than or equal to 3840.

[0088] Preferably, the wireless terminal supports LDPC based Figure 2 , and the intermediate TBS or the final TBS is less than or equal to 3824.

[0089] Preferably, at least one event includes: the intermediate TBS is greater than 3824, the wireless terminal supports the LDPC basis Figure 2 , the type of RNTI for scrambling the CRC of the DCI is an RNTI other than the RNTI in Rel-16 NR, or the type of the transmission mode is at least one of the first type of transmission modes including a maximum modulation order less than or equal to 64 quadrature amplitude modulation (QAM).

[0090] Preferably, the specific step comprises using a TBS table to determine the closest TBS that is greater than or equal to the correction value TBS.

[0091] Preferably, each element in the TBS table is different from all elements in the TBS table in Rel-16 NR.

[0092] Preferably, each element in the TBS table is divisible by 3816, and the quotient of the element divided by 3816 is greater than 1.

[0093] Preferably, the final TBS is determined by the following formula:

[0094]

[0095] Among them, C is composed of Sure,

[0096] in is the top function, N′ info is the correction value TBS and is determined by:

[0097]

[0098] Among them, max() is a function to obtain the maximum variable, round() is a function to round the variable to the nearest integer, and N info is the intermediate TBS, and n is determined by:

[0099]

[0100] in is the base function.

[0101] Preferably, the number of physical resource blocks in the signal is quantized by a scaling factor associated with the bandwidth of the bandwidth portion of the wireless terminal.

[0102] Preferably, an MCS table with transform precoding is used to transmit the transport block, and the wireless terminal is configured with a transmission mode associated with at least one of: a type of wireless network temporary identifier for scrambling a cyclic redundancy check of downlink control information, a peak data rate for an uplink and / or downlink, a battery life of the wireless terminal, a modulation order supported by the wireless terminal, a maximum code rate, a maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth configured for a bandwidth portion of the wireless terminal, a target block error rate for transmitting the transport block, an end-to-end delay supported by the wireless terminal, a type of frequency range supported by the wireless terminal, a coverage enhancement capability of the wireless terminal, a power level of the wireless terminal, a processing time capability of the wireless terminal, and a use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, a video surveillance or wearable device, or a duplex mode supported by the wireless terminal.

[0103] Preferably, the cache size used for LDPC rate matching is determined by high-level signaling, which includes at least one of the following: the maximum bandwidth supported by the wireless terminal, the number of physical resource blocks available to the wireless terminal in the bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the peak data rate supported by the wireless terminal, the maximum modulation order supported by the wireless terminal, the bandwidth portion activated for the wireless terminal, or the type of wireless network temporary identifier for scrambling the cyclic redundancy check of the downlink control information.

[0104] The present disclosure relates to a wireless terminal, comprising a processor, wherein the processor is configured to:

[0105] determining an intermediate value transport block size (TBS) of a transport block transmitted between a wireless terminal and a wireless network node in a modulation and coding scheme based on a plurality of transmission parameters,

[0106] In response to at least one event, modifying the modulation and coding scheme intermediate TBS to generate a modified value TBS, and

[0107] Determine a final TBS based on the modulation and coding scheme correction value TBS and a specific step in response to at least one event of the modulation and coding scheme,

[0108] Therein, the specific steps are determined based on a plurality of transmission parameters.

[0109] Various embodiments may preferably implement the following features:

[0110] Preferably, the wireless terminal comprises a communication unit configured to receive a signal indicating a plurality of transmission parameters from a wireless network.

[0111] Preferably, the processor is further configured to execute the wireless communication method described in any one of the methods previously described.

[0112] The present disclosure relates to a wireless network node, comprising: a communication unit, which is configured to send a signal indicating multiple transmission parameters to a wireless terminal; and a processor, which is configured to: determine an intermediate value transmission block size (TBS) of a transmission block transmitted between the wireless terminal and the wireless network node based on the multiple transmission parameters, modify the intermediate TBS in response to at least one event to generate a revised value TBS, and determine a final TBS based on the revised value TBS and a specific step in response to the at least one event; and wherein the specific step is determined based on the multiple transmission parameters.

[0113] Various embodiments may preferably implement the following features:

[0114] Preferably, the processor is further configured to execute the wireless communication method described in any one of the methods described above.

[0115] The present disclosure relates to a computer program product, including a computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement any of the wireless communication methods described in the previous methods.

[0116] The exemplary embodiments disclosed herein are intended to provide features that will become apparent by reference to the following description when taken in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it will be appreciated that these embodiments are presented by way of example rather than limitation, and it will be apparent to those of ordinary skill in the art who read this disclosure that various modifications to the disclosed embodiments may be made while remaining within the scope of this disclosure.

[0117] Therefore, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary methods. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged while remaining within the scope of the present disclosure. Therefore, it should be understood by those of ordinary skill in the art that the methods and techniques disclosed herein present various steps or actions in an example order, and unless otherwise expressly stated, the present disclosure is not limited to the specific order or hierarchy presented.

[0118] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] Figure 1 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown.

[0120] Figure 2 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown.

[0121] Figure 3 A flow chart illustrating a process according to an embodiment according to an embodiment of the present disclosure is shown.

[0122] Figure 4 A flow chart illustrating a process according to an embodiment according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0123] Figure 1 A schematic diagram of a wireless terminal 10 according to an embodiment of the present disclosure is provided. The wireless terminal 10 may be a user equipment (UE), a mobile phone, a laptop, a tablet computer, an e-book, or a portable computer system, and is not limited herein. The wireless terminal 10 may include a processor 100 such as a microprocessor or an application-specific integrated circuit (ASIC), a storage unit 110, and a communication unit 120. The storage unit 110 may be any data storage device that stores program code 112 accessed and executed by the processor 100. Embodiments of the storage unit 112 include, but are not limited to, a subscriber identity module (SIM), a read-only memory (ROM), a flash memory, a random access memory (RAM), a hard disk, and an optical data storage device. The communication unit 120 may be a transceiver, and is used to send and receive signals (e.g., messages or data packets) based on the processing results of the processor 100. In an embodiment, the communication unit 120 communicates with the communication unit 120 via Figure 1 At least one antenna 122 is shown in Figure 1 for transmitting and receiving signals.

[0124] In an embodiment, the storage unit 110 and the program code 112 may be omitted, and the processor 100 may include the storage unit having the stored program code.

[0125] Processor 100 may implement any of the exemplary embodiment steps on wireless terminal 10 , for example, by executing program code 112 .

[0126] The communication unit 120 may be a transceiver. Alternatively or additionally, the communication unit 120 may combine a transmitting unit and a receiving unit configured to transmit and receive signals to and from a wireless network node (eg, a base station), respectively.

[0127] Figure 2 A schematic diagram of a radio network node 20 according to an embodiment of the present disclosure is provided. The radio network node 20 may be a satellite, a base station (BS), a network entity, a mobility management entity (MME), a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a radio access network (RAN), a next generation RAN (NG-RAN), a data network, a core network, or a radio network controller (RNC), and is not limited herein. In addition, the radio network node 20 may include (execute) at least one network function such as an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), an application function (AF), etc. The radio network node 20 may include a processor 200 such as a microprocessor or an ASIC, a storage unit 210, and a communication unit 220. The storage unit 210 may be any data storage device storing a program code 212 accessed and executed by the processor 200. Examples of the storage unit 212 include, but are not limited to, a SIM, a ROM, a flash memory, a RAM, a hard disk, and an optical data storage device. The communication unit 220 may be a transceiver and is used to send and receive signals (eg, messages or data packets) according to the processing results of the processor 200. In an example, the communication unit 220 transmits and receives the data packets via Figure 2 At least one antenna 222 is shown in Figure 2 for transmitting and receiving signals.

[0128] In an embodiment, the storage unit 210 and the program code 212 may be omitted. The processor 200 may include a storage unit having stored program code.

[0129] The processor 200 may implement any of the steps described in the exemplary embodiments on the radio network node 20 , for example, via executing the program code 212 .

[0130] The communication unit 220 may be a transceiver. Alternatively or additionally, the communication unit 220 may combine a transmitting unit and a receiving unit configured to transmit and receive signals to and from a wireless terminal (eg, a user equipment), respectively.

[0131] Generally speaking, there is a new type of NR device called Reduced Capability UE (RedCap UE), which includes three use cases: industrial wireless sensors, video surveillance, and wearable devices. These three types of NR devices have different requirements for the parameters of data rate, end-to-end latency, reliability, and battery life, as shown in Table 2 below. The data rates between the requirements for different use cases may vary greatly. Therefore, for some use cases with lower data rates, it is necessary to support restricted or reduced capabilities, such as restricted bandwidth, restricted maximum number of MIMO layers, or restricted modulation orders. Some restricted parameters are associated with the transport block size (TBS) determination.

[0132] According to an embodiment, the TBS determination method for RedCap UE described herein is a method of defining limited capabilities and a TBS determination procedure for RedCap UE.

[0133] Table 2: Rel-17 REDCAP use cases and requirements

[0134]

[0135] In the present disclosure, the high-layer parameter may be MAC layer signaling and / or RRC signaling. In the following embodiments, the term "and" may be used for "and" or "or" or "and / or". In the present disclosure, a RedCap UE may correspond to a UE with one or more restricted parameters, wherein the restricted parameter includes at least one of the following: 1) UL / DL bandwidth, 2) data rate for UL / DL, 3) modulation order for UL / DL, 4) code rate for UL / DL, 5) number of layers for UL / DL.

[0136] In the present disclosure, this parameter may be defined as follows:

[0137] In some embodiments, the bandwidth in MHz represents the frequency domain resource. In some embodiments, the bandwidth can be at least one of the values ​​{1, 2, 2.5, 5, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100} MHz. In some embodiments, the maximum transmission bandwidth configuration N for each UE channel bandwidth and subcarrier spacing RB are specified in Table 3 below.

[0138] Table 3: Maximum transmission bandwidth configuration N RB

[0139]

[0140] In some embodiments, the maximum number of available PRBs per maximum transmission bandwidth may be determined by the transmission bandwidth and the minimum guard band per transmission bandwidth and SCS (kHz). For a UE, all PRBs within the UE channel bandwidth that do not cover the minimum guard band may be used.

[0141] In some embodiments, a combination of channel bandwidth, SCS and operating frequency band is specified, and the combination of channel bandwidth and SCS available for each operating frequency band is different. In some embodiments, the operating frequency band includes at least one of the following: {n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n26, n28, n29, n30, n34, n38, n39, n40, n41, n48, n50, n51, n53, n65, n66, n70, n71, n74, n75, n76, n77, n78, n79, n80, n81, n82, n83, n84, n86, n89, n90, n91, n92, n93, n94, n95}. In some embodiments, the operating frequency band may be used for DFT-s-OFDM and / or CP-OFDM waveforms configured by higher layer parameters of the UE.

[0142] For intra-band contiguous carrier aggregation, a carrier aggregation configuration is a single operating band that supports carrier aggregation bandwidth levels with associated bandwidth combination sets. For each carrier aggregation configuration, requirements are specified for all aggregated channel bandwidths contained in the bandwidth combination set, and the UE can indicate how many bandwidth combination sets are supported per carrier aggregation configuration.

[0143] For intra-band non-contiguous carrier aggregation, the carrier aggregation configuration is a single operating band supporting two or more sub-blocks, each sub-block supporting one carrier aggregation bandwidth class.

[0144] For inter-band carrier aggregation, a carrier aggregation configuration is a combination of operating frequency bands, and each combination of operating frequency bands supports one carrier aggregation bandwidth class.

[0145] In some embodiments, the peak data rate represents the maximum data rate supported by the UE for UL and / or DL. 6The peak data rate in bits) may be determined based on at least one of the following: 1) the number of aggregated component carriers in the band or band combination, 2) the maximum number of layers supported by the UE for uplink or downlink, 3) the maximum rate supported by the UE, 4) the maximum modulation order supported by the UE, which is configured by higher layer parameters for uplink or downlink, 5) a scaling factor given by higher layer parameters, 6) parameter set (μ), 7) the average OFDM symbol duration in a subframe of the parameter set (μ), 8) the maximum RB allocation in the bandwidth BW with parameter set μ supported by the UE, 9) overhead, 10) the maximum TBS supported by the UE. BW is the maximum bandwidth supported by the UE in a given band or band combination.

[0146] In some embodiments, the battery life time indicates the time during which the UE works continuously, that is, the time during which the UE is not charged. In some embodiments, if the UE uses power saving technology, the battery life time may be longer.

[0147] In some embodiments, the UE processing time capability represents at least one of the following: 1) physical downlink shared channel (PDSCH) processing time N1, 2) physical uplink shared channel (PUSCH) preparation process time N2, 3) MAC (media access control) CE (control unit) processing time, 4) channel state information (CSI) calculation time, 5) physical downlink control channel (PDCCH) decoding time, 6) the minimum applicable scheduling offset indicated by DCI format 0_1 / 1_1, which includes the minimum applicable K0, and / or K2, and / or the minimum applicable value of the non-periodic CSI-RS trigger offset, and / or the minimum applicable value of the non-periodic SRS trigger offset, 7) K0 value, and / or K1 value, and / or K2 value, and / or non-periodic CSI-RS trigger offset value, and / or non-periodic SRS trigger offset value.

[0148] The PDSCH processing time N1 may represent the number of PDSCH symbols processed by the UE, which is used to calculate the minimum time interval between the end of the last symbol of the PDSCH carrying the confirmed transport block (TB) and the first uplink symbol of the physical uplink control channel (PUCCH), which carries the hybrid automatic repeat request acknowledgment (HARQ-ACK) information.

[0149] The PUSCH preparation process time N2 may represent the number of symbols used to calculate the minimum time interval between the end of reception of the last symbol of the PDCCH carrying downlink control information (DCI) scheduling the PUSCH and the first uplink symbol in the PUSCH. The MAC CE processing time may represent the time between the PUCCH with HARQ-ACK information and the time slot in which the command carried by the PDSCH is applied.

[0150] The CSI calculation time may represent the number of symbols used to calculate the minimum time interval between the end of the last symbol of the PDCCH that triggers the CSI report and the uplink symbol of the CSI report, or the minimum time interval between the end of the last symbol of the latest time of the following items and the first uplink symbol of the nth CSI report, the following items include: aperiodic channel state information reference signal (CSI-RS) resources for channel measurement, aperiodic CSI-interference measurement (IM) for interference measurement, and aperiodic non-zero power (NZP) CSI-RS for interference measurement. The PDCCH decoding time may represent the time for the UE to decode the PDCCH / DCI.

[0151] The aperiodic CSI-RS trigger offset may include a time slot offset between the triggered downlink control information and the aperiodic non-zero power channel state information reference signal (NZP CSI-RS) resource set. The aperiodic SRS trigger offset may include an offset in the number of time slots between the triggered DCI and the actual transmission of the SRS-ResourceSet. K0 may include an offset between the DCI and the PDSCH it schedules. K2 may include a time slot offset between the DCI and the PUSCH it schedules. K1 may include a time slot offset between the PDSCH and the DL ACK or a time slot offset between the DCI and the HARQ. Among them, the minimum K0 / K1 / K2 / A-CSI-RS trigger offset / A-SRS trigger offset is the minimum applicable value of the parameter indicated by the DCI format 0_1 / 1_1.

[0152] In some embodiments, the target block error rate (BLER) for data transmission represents a target BLER used by the UE to report available channel quality information (CQI). In some embodiments, the target BLER may be at least one of the following values: {0.1, 0.01, 0.001, 0.00001}.

[0153] In some embodiments, the power class indicates the performance of the UE in consuming power. For example, the UE may support power class 3 by using some specific power saving techniques.

[0154] In some embodiments, the duplex mode indicates whether the UE side and the network side are able to receive and send data on the same resource / receive and send data to the same resource. The duplex mode in NR may include time division duplex (TDD) and frequency division duplex (FDD).

[0155] In some embodiments, the frequency range represents different operating frequency bands. In 5G NR, there are two types of frequency ranges, including FR1 and FR2. FR1 represents an operating frequency band range between 450 MHz and 6000 MHz, while FR2 represents an operating frequency band range between 24250 MHz and 52600 MHz.

[0156] In some embodiments, the end-to-end delay refers to the delay time for the UE to fully process the data transmission relative to the data that is normally fully processed. In some embodiments, the maximum end-to-end delay supported by the UE can be at least one of the following values: 5ms, 10ms, 100ms and / or 500ms.

[0157] In some embodiments, the type of use case indicates the scenario or purpose or device size that the user device should be used for. For example, according to different purposes and scenarios, there may be three types of use cases, including 1) industrial wireless sensors, 2) video surveillance, and 3) wearable devices. For example, according to different device sizes, there may be two types of use cases, including 1) wireless sensors and video surveillance, and 2) wearable devices.

[0158] In some embodiments, coverage capability or coverage enhancement indicates the maximum number of repetitions of data transmission; and / or transmit power; and / or SRS transmit power determined by the UE; and / or the maximum output power configured by the UE for carrier f of primary cell c in PUCCH transmission opportunity i, etc. For example, if the UE supports a smaller maximum number of repetitions than a general UE, it means that the UE can transmit data without a large number of repeated coverages, that is, the UE has enhanced coverage capability.

[0159] One embodiment relates to the transmission mode of RedCap UE.

[0160] In some embodiments, for RedCap UE, there are N types of transmission modes. In some embodiments, each type of transmission mode includes a set of parameters. In some embodiments, the set of parameters for UL and DL includes at least one of the following:

[0161] 1) Maximum bandwidth,

[0162] 2) Minimum bandwidth,

[0163] 3) the maximum number of layers in the spatial domain,

[0164] 4) The maximum number of antenna ports used for data transmission,

[0165] 5) Peak data rate,

[0166] 6) Battery life time,

[0167] 7) Supported modulation orders,

[0168] 8) Maximum bit rate,

[0169] 9) Maximum TBS supported,

[0170] 10) Maximum number of PRBs or RBs of bandwidth,

[0171] 11) Target BLER for data transmission,

[0172] 12) Supported end-to-end delay,

[0173] 13) The total number of frequency range (FR) types supported,

[0174] 14) Coverage enhancement capabilities,

[0175] 15) Power level,

[0176] 16)UE processing time capability,

[0177] 17) Types of use cases,

[0178] 18) Maximum number of SCells configured in carrier aggregation (CA),

[0179] 19) Duplex mode, etc.

[0180] In some embodiments, N is an integer not less than 1, that is, N ≥ 1. In some embodiments, N is not greater than 16, that is, N ≤ 16. In some embodiments, N is not less than 1 and not greater than 16, that is, 1 ≤ N ≤ 16.

[0181] In some embodiments, the transmission mode is a UE capability. In some embodiments, the transmission mode is a UE category. In some embodiments, the transmission mode is a high-level parameter reported by the UE. In some embodiments, the transmission mode is a high-level parameter sent by the network. In some embodiments, the transmission mode is a parameter for UEs supporting Release 17. In some embodiments, the transmission mode is a parameter for UEs supporting Release 17 and other releases.

[0182] In some embodiments, at least one parameter included in the set of parameters corresponding to different types of transmission modes has a different value. In some embodiments, the TBS determination process may be different for different types of transmission modes.

[0183] In some embodiments, the value of at least one of the parameters related to one type of transmission mode is defined as P1, and the value of at least one of the parameters related to another type of transmission mode is defined as P2. In some embodiments, P1 is not greater than P2, that is, P1≤P2. In some embodiments, the total number of types of parameters supported by one transmission mode is not greater than the total number of types of parameters supported by another type of transmission mode. In some embodiments, the ID of the transmission mode is less than the ID of the other type of transmission mode.

[0184] Next, UL / DL peak data rates are described according to various embodiments.

[0185] In some embodiments, for the parameters of DL peak data rate, P1 is not greater than 150 Mbps, and P2 is not less than 150 Mbps. In some embodiments, for the parameters of UL peak data rate, P1 is not greater than 50 Mbps, and P2 is not less than 50 Mbps.

[0186] For example, there are two types of transmission modes. The DL peak data rate of the first type of transmission mode supported by the UE is not greater than 50 Mbps. The DL peak data rate of the second type of transmission mode supported by the UE is not less than 150 Mbps. The UL peak data of the second type of transmission mode supported by the UE is not greater than 10 Mbps. The UL peak data rate of the second type of transmission mode supported by the UE is not less than 50 Mbps.

[0187] In some embodiments, the data rate for a given number of aggregated carriers in a band or band combination is determined as follows:

[0188]

[0189] where J is the number of aggregated component carriers in the frequency band or frequency band combination; R max is the maximum rate supported by the UE; for the jth component carrier (CC), is the maximum number of supported layers for uplink or downlink of the UE; is the maximum modulation order supported by the UE, which is configured by higher layer parameters for uplink or downlink; (j) is a scaling factor given by a higher layer parameter and can take the values ​​1, 0.8, 0.75 and 0.4; μ is a parameter set (as defined in TS 38.211); is the average OFDM symbol duration in a subframe of parameter set μ, i.e. (A normal cyclic prefix is ​​assumed.) is the bandwidth BW with parameter set μ supported by the UE (j) The maximum RB allocation in BW(j) It is the maximum bandwidth supported by the UE in a given frequency band or frequency band combination; OH (j) is the overhead and can take the following values: 1) 0.14 for the frequency range FR1 for DL, 2) 0.18 for the frequency range FR2 for DL, 3) 0.08 for the frequency range FR1 for UL, 4) 0.10 for the frequency range FR2 for UL.

[0190] S (j) is a new scaling factor and is not greater than 1. In some embodiments, the new scaling factor is a value configured by a higher layer parameter from a first candidate set of UEs supporting the first type of transmission mode. In some embodiments, the new scaling factor is a value configured by a higher layer parameter from a second candidate set of UEs supporting the second type of transmission mode. In some embodiments, at least one of the values ​​in the first candidate set of the new scaling factor is different from the values ​​in the second candidate set. In some embodiments, the new scaling factor is related to at least one of the following parameters of the UE: 1) the number of allocated PRBs, 2) the bandwidth of the activated UL / DL BWP, 3) the maximum number of layers, 4) the maximum rate, 5) the maximum modulation order, etc.

[0191] For example, for the second type of transmission mode, R max is no greater than 948 / 1024, and For example, for the second type of transmission mode, R max is no greater than 658 / 1024, and No less than 16QAM.

[0192] Next, bandwidth according to various embodiments is described.

[0193] In some embodiments, for the parameter of maximum bandwidth, P1 is not greater than 20 MHz, and P2 is not less than 50 MHz. In some embodiments, for the parameter of minimum bandwidth, P1 is not greater than 10 MHz, and P2 is not less than 10 MHz.

[0194] In some embodiments, the maximum bandwidth is related to the supported frequency range. In some embodiments, for the maximum bandwidth parameter in FR1, P1 is not greater than 20 MHz and P2 is not less than 20 MHz. In some embodiments, for the maximum bandwidth parameter in FR2, P1 is not greater than 40 MHz and P2 is not less than 50 MHz. In some embodiments, for the minimum bandwidth parameter in FR1, P1 is not greater than 10 MHz and P2 is not less than 10 MHz. In some embodiments, for the minimum bandwidth parameter in FR2, P1 is not greater than 80 MHz and P2 is not less than 10 MHz.

[0195] In some embodiments, the maximum bandwidth is related to the subcarrier spacing (SCS). In some embodiments, if the SCS is less than 30 KHz, the maximum bandwidth is scaled by a scaling factor. In some embodiments, if the SCS is not less than 30 KHz, the maximum bandwidth is scaled by a scaling factor.

[0196] In some embodiments, the maximum bandwidth is related to the frequency range. In some embodiments, if FR1 is configured for UEs in the serving cell, the maximum bandwidth is scaled by a scaling factor. In some embodiments, if FR2 is configured for UEs in the serving cell, the maximum bandwidth is scaled by a scaling factor. The scaling factor can be configured by a high-level parameter and is not greater than 1.

[0197] For example, there are two types of transmission modes. The bandwidth of the first type of transmission mode supported by the UE is not greater than 20 MHz. The bandwidth of the second type of transmission mode supported by the UE is not less than 20 MHz. The UL peak data of the second type of transmission mode supported by the UE is not greater than 10 Mbps. The UL peak data rate of the second type of transmission mode supported by the UE is not less than 50 Mbps.

[0198] Next, bandwidth scaling according to various embodiments is described.

[0199] In some embodiments, the bandwidth of the BWP configured for the UE is scaled by a factor S bwp In some embodiments, the scaling factor S bwp Not greater than 1 and configured by high-level parameters. In some embodiments, the scaling factor S bwp The scaling factor S is different for BWPs with different bandwidths. bwp There are at least four candidate values.

[0200] In some embodiments, the scaling factor S bwp Related to at least one of the following parameters supported by the UE: 1) type of transmission mode, 2) BWP ID, 3) frequency range, 4) maximum modulation order, 5) maximum code rate, 6) maximum number of layers, 7) bandwidth of activated UL / DL BWP, 8) number of PRBs allocated for data transmission in PDSCH / PUSCH.

[0201] One embodiment relates to a TBS determination process.

[0202] In some embodiments, TBS is determined by min{the final TBS determined by the TBS determination process, the maximum TBS}, where min{} is a function that obtains the minimum input variable. In some embodiments, the maximum TBS is related to at least one of the following parameters: 1) uplink or downlink data transmission; 2) the type of transmission mode; 3) the type of frequency range; 4) the RNTI type for scrambling the CRC of DCI format 0_1 ​​and / or DCI format 1_1 and / or DCI format 0_2 and / or DCI format 1_2 and / or the new DCI format for Release 16 DCI format; 5) the number of PRBs used for TBS determination; 6) coverage capability; 7) the supported transmission parameter sets μ; 8) the average OFDM symbol duration value; 9) type of wireless link, etc.

[0203] In some embodiments, the maximum TBS is determined based on a plurality of transmission parameters. In some embodiments, the plurality of transmission parameters include at least one of a maximum code block size, a maximum code rate supported by the wireless terminal, a maximum code rate of an MCS table, a maximum modulation order supported by the wireless terminal, and a maximum modulation order of an MCS table.

[0204] In some embodiments, the maximum TBS is one of the elements in the TBS table that is greater than or equal to the product of the maximum code block size and a ratio, the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable modulation and coding scheme (MCS) table. In some embodiments, the ratio of the maximum code rate supported by the wireless terminal to the maximum code rate in the configurable MCS table is a value in the range [0.27, 0.7201]. In some embodiments, for a low density parity check (LDPC) based Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1 , the maximum code block size is equal to 8448. In some embodiments, the TBS table includes at least one of the TBS table shown in Table 1, the new TBS table shown in Table 4 and / or Table 5.

[0205] In some embodiments, the maximum TBS is one of the elements in the TBS table that is greater than or equal to the product of the maximum coding block size and the maximum modulation order supported by the wireless terminal and a configurable ratio, the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table. In some embodiments, the ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1]. In some embodiments, for the LDPC basis Figure 2 , the maximum code block size is equal to 3840, and for LDPC basis Figure 1, the maximum code block size is equal to 8448. In some embodiments, the TBS table includes at least one of the TBS table shown in Table 1, the new TBS table shown in Table 4 and / or Table 5.

[0206] In some embodiments, the maximum TBS of the first transmission mode is at least one of the elements in the first TBS set. In some embodiments, the maximum TBS of the second transmission mode is at least one of the elements in the second TBS set.

[0207] In some embodiments, the first TBS set may include at least one of the following elements {1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424, 27376, 51240} for PDSCH. In some embodiments, the first TBS set may include at least one of the following elements {328, 408, 456, 504, 600, 712, 808, 936, 1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424} for PUSCH.

[0208] In some embodiments, the second TBS set may include at least one of the following elements {8424, 15110, 15370, 15620, 15880, 16140, 27376, 50180, 51220} for PDSCH. In some embodiments, the first TBS set may include at least one of the following elements {3824, 5160, 8424, 25100, 27376} for PUSCH.

[0209] In some embodiments, for UL / DL, the value of each element in the first TBS set is no greater than 5160. In some embodiments, the value of each element in the second TBS set is no less than 8448.

[0210] In some embodiments, for UL / DL, the value of each element in the first TBS set is not greater than 3840. In some embodiments, the value of each element in the second TBS set is not less than 3840.

[0211] Next, a method for determining N is described according to various embodiments. info and / or the number of PRBs of a TBS.

[0212] In some embodiments, the number of PRBs used to determine the TBS is determined by the maximum of the number of allocated PRBs and the maximum number of PRBs supported by the UE for PUSCH / PDSCH. In some embodiments, the maximum number of PRBs supported by the UE is configured by a higher layer parameter. In some embodiments, the maximum number of PRBs supported by the UE for each BWP is not greater than the maximum number of PRBs for the corresponding bandwidth in TS 38.101.

[0213] In some embodiments, the maximum number of PRBs supported by the UE corresponding to each BWP is not greater than a threshold 1. In some embodiments, the maximum number of PRBs supported by the UE corresponding to each BWP is not less than a threshold 2. In some embodiments, threshold 1 is not less than 270. In some embodiments, threshold 2 is not less than 6.

[0214] In some embodiments, the number of PRBs used to determine the TBS is determined by a scaling factor (S PRB ) and the number of PRBs allocated for PDSCH or PUSCH (n PRB ). In some embodiments, the number of PRBs used to determine the TBS is determined as (S PRB *n PRB In some embodiments, the scaling factor (S PRB ) is related to the bandwidth of the UE's activated UL / DL BWP.

[0215] In some embodiments, the maximum number of PRBs per bandwidth is predefined for a specific type of transmission mode. In some embodiments, the quantized number of PRBs per bandwidth for UEs supporting a specific transmission mode is no greater than the original maximum number of PRBs defined in the NR Release 16 specification. In some embodiments, the number of PRBs for different bandwidths is quantized as follows:

[0216] Bandwidth (MHz) 5 ... 20 <![CDATA[The maximum number of PRBs (max_n PRB )]]> N1 ... Nx

[0217] In some embodiments, the number of available PRBs for each bandwidth is configured by a high-level parameter. In some embodiments, the number of available PRBs for each bandwidth is related to the type of transmission mode and / or the bandwidth of the BWP. In some embodiments, the number of PRBs used to determine the TBS should not be greater than the available PRBs for the corresponding bandwidth.

[0218] In some embodiments, the number of PRBs used to determine the TBS is determined by the scaling factor and the number of PRBs allocated for the PDSCH or PUSCH. In some embodiments, the scaling factor is related to the type of transmission mode.

[0219] In some embodiments, the number of PRBs used for TBS determination may not be greater than the maximum number of PRBs. In some embodiments, the number of PRBs used for TBS determination may be determined as the min{number of allocated PRBs, number of PRBs} of the UE. In some embodiments, the maximum number of PRBs is related to the type of transmission mode supported by the UE. In some embodiments, the maximum number of PRBs for different transmission modes is quantized as follows:

[0220] Type of transmission mode <![CDATA[The maximum number of PRBs (max_n PRB )]]> Mode 1 N1 ... ... Mode x Nx

[0221] In some embodiments, the scaling factor (S) for a particular transmission mode PRB ) is not greater than 1. In some embodiments, the scaling factor (S) of other transmission modes PRB ) is equal to 1 or is not available. The maximum supported bandwidth and / or the maximum supported modulation order and / or the maximum number of supported layers of a specific transmission mode may be smaller than the maximum supported bandwidth and / or the maximum supported modulation order and / or the maximum number of supported layers of other transmission modes.

[0222] In some embodiments, the UE does not expect the number of PRBs allocated for PDSCH / PUSCH to be greater than the maximum number of PRBs for the activated UL / DLBWP.

[0223] In some embodiments, for example, by using a scaling factor (S PRB )The above method for determining the number of PRBs can be determined as function(S PRB *n PRB In some embodiments, function() represents rounding, and / or rounding down, and / or rounding up, and / or keeping the original value. In some embodiments, the above method for determining the number of PRBs for TBS determination can also be used to determine N info The value of .

[0224] Next, MCS determination is described according to various embodiments.

[0225] In some embodiments, the supported MCS index is related to at least one of the following parameters: 1) the number of PRBs allocated for PUSCH / PDSCH, 2) the number of layers, 3) the bandwidth of the activated BWP, 4) the type of transmission mode supported by the UE.

[0226] In some embodiments, if the UE supports a specific type of transmission mode, when MCS table 1 for PDSCH and / or MCS table 2 for PDSCH and / or MCS table 3 for PDSCH and / or MCS table for PUSCH with transform precoding and / or MCS table 2 for PUSCH with transform precoding are configured for the UE, the maximum MCS index available for the UE is less than a threshold value 1. In some embodiments, the threshold value is not greater than 28. In some embodiments, the specific type of transmission mode is configured by a higher layer parameter.

[0227] In some embodiments, the MCS indices available to the UE are related to the types of transmission modes supported. In some embodiments, the number of available MCS indices for a particular type of transmission mode is less than that for other types of transmission modes.

[0228] In some embodiments, UEs supporting certain types of transmission modes may use a maximum modulation order (Q m ) is no greater than 64QAM(Q m =6) is configured. In some embodiments, a UE supporting a specific type of transmission mode may not use the maximum modulation order (Q m ) is greater than 256QAM (Q m =8) is configured.

[0229] In some embodiments, UEs supporting a particular type of transmission mode are not expected to use the MCS table for PUSCH with transformed precoding for UL transmissions.

[0230] In some embodiments, the supported modulation order (Q m ) is related to at least one of the following parameters: 1) the number of PRBs allocated for PUSCH / PDSCH, 2) the number of layers, 3) the bandwidth of the activated BWP, 4) the type of transmission mode supported by the UE.

[0231] In some embodiments, the supported rate (R) is related to at least one of the following parameters: 1) the number of PRBs allocated for PUSCH / PDSCH, 2) the number of layers, 3) the bandwidth of the activated BWP, 4) the type of transmission mode supported by the UE.

[0232] In some embodiments, the modulation order of a UE supporting a particular type of transmission mode is determined to be consistent with the MCS index (I MCS ) The corresponding modulation order and the maximum modulation order Q m maxThe maximum modulation order supported by the UE may be configured by a high-level parameter. In some embodiments, the maximum modulation order supported by the UE is related to the type of transmission mode supported by the UE.

[0233] In some embodiments, the type of transmission mode is identified by the RNTI that scrambles the CRC of the DCI transmitted on the PDCCH. In some embodiments, the available MCS table configured for the UE can be determined based on at least one of the following parameters: 1) the type of RNTI that scrambles the CRC of the DCI, 2) the type of transmission mode, 3) the type of link for data transmission (i.e., PDSCH data scheduling or PUSCH data scheduling), etc.

[0234] Next, maximum code block size determination is described according to various embodiments.

[0235] In some embodiments, the maximum code block size is determined by at least one of the following parameters: 1) the number of PRBs allocated for PUSCH / PDSCH, 2) the number of layers, 3) the bandwidth of the activated BWP, 4) the type of transmission mode, 5) the selected LDPC base map, 6) the code rate, and 7) the value of TBS supported by the UE.

[0236] In some embodiments, if the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , the maximum code block size is not greater than 3840. In some embodiments, if the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , the UE uses steps 1) and 3) to determine the TBS for PDSCH and PUSCH.

[0237] In some embodiments, if the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , and if N info If the value of is greater than 3824, the UE uses step 4) to modify N info .

[0238] In some embodiments, if the higher layer parameters configure the UE to support LDPC based Figure 1 , the maximum code block size of the UE can be greater than 3840. In some embodiments, if the UE is configured to support LDPC based Figure 1 , the UE may use steps 1)-4) of the TBS determination procedure in Release 16 for PDSCH and PUSCH.

[0239] In some embodiments, if the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , and if N info If the value is greater than 3824, you can follow the steps below to determine the modified Ninfo (N' info ) to determine TBS.

[0240] - The intermediate number of quantized information bits in, And the round function rounds to the nearest integer.

[0241] in,

[0242] In some embodiments, if the higher layer parameters configure the UE to support a specific type of transmission mode, the UE only supports the LDPC-based Figure 2 In some embodiments, a specific type of transmission mode may be configured by higher layer parameters.

[0243] In some embodiments, the UE may support a TBS that is not greater than the maximum TBS. In some embodiments, the maximum TBS is configured by a high-layer parameter. In some embodiments, the maximum TBS is not greater than a threshold. In some embodiments, the threshold is not less than 3824. In some embodiments, the UE may determine the TBS using steps 1)-3) of the TBS determination process.

[0244] In some embodiments, the UE determines the final TBS as the minimum value between the maximum TBS and the TBS calculated by the TBS determination process. In some embodiments, the TBS determination process may be the TBS determination process in the above embodiments or the TBS determination process in the NRRe1-16 specification.

[0245] In some embodiments, the UE does not expect the TBS determined by the current TBS procedure to be greater than the maximum TBS supported by the UE.

[0246] In some embodiments, the UE uses steps 1)-3) of the TBS determination process to determine the TBS. In some embodiments, the UE finds the closest value TBS (N') in the new TBS table. info ) as the final TBS. In some embodiments, the new TBS table is a TBS table including the current TBS elements in the TBS table. In some embodiments, the new TBS table is an extension of the current TBS table. The current TBS table may be the TBS table in Table 2. In some embodiments, the new TBS table is a new additional or independent TBS table for the current TBS table. The current TBS table may be the TBS table in Table 2.

[0247] In some embodiments, the element (E) in the new TBS table may satisfy at least one of the following conditions:

[0248] 1) and / or

[0249] 2) and and / or

[0250] 3) and and / or

[0251] 4) in, and / or

[0252] 5) in, and / or

[0253] 6) in, and and / or

[0254] 7) The maximum value of E is not greater than the threshold, where the threshold is 84064.

[0255] In some embodiments, if N info is greater than 3824, the UE can calculate the correction value TBS through step 4). In some embodiments, if N info If it is greater than 3824, the UE can find the closest corrected value TBS(N' in the new TBS table. info ) as the final TBS to determine TBS. In some embodiments, the TBS closest to the corrected value TBS (N' info The final TBS (referred to as TBS1) is the value in the TBS table that is not greater than and closest to the corrected value TBS (N' info ) of TBS. In some embodiments, the value closest to the corrected value TBS(N' info )'s final TBS (referred to as TBS2) is the TBS in the TBS table that is not less than and is closest to the corrected value TBS.

[0256] In some embodiments, the value closest to the correction value TBS(N' info The final TBS of the N' is the same as the corrected value TBS in the TBS table. info ) has the smallest interval TBS. info ) is represented as interval 1. TBS2 and the correction value TBS (N' info ) is denoted as interval 2. In some embodiments, if interval 1 is equal to interval 2, the TBS with a smaller index is determined as the final TBS.

[0257] In some embodiments, the value closest to the correction value TBS(N' infoThe final TBS of the N' is the same as the corrected value TBS in the TBS table. info ) has the smallest interval TBS. info ) is represented as interval 1. TBS2 and the correction value TBS (N' info ) is denoted as interval 2. In some embodiments, if interval 1 is equal to interval 2, the TBS with a larger index is determined as the final TBS.

[0258] In some embodiments, the new TBS table is shown in Table 4.

[0259] Table 4: New TBS table

[0260]

[0261]

[0262]

[0263] In some embodiments, the new TBS table used to determine the final TBS includes at least one of the elements in Table 5.

[0264]

[0265]

[0266]

[0267]

[0268]

[0269]

[0270] In some embodiments, the final TBS is determined by the minimum value between the maximum TBS supported by the UE and the temporary TBS determined by TBS determination steps 1)-4) in TS 38.214.

[0271] In some embodiments, the UE does not expect the final TBS to be greater than the maximum TBS supported by the UE associated with the specific resource configuration. In some embodiments, if the final TBS based on the information indicated by the DCI is greater than the maximum TBS supported by the UE associated with the specific resource configuration, the UE may ignore the scheduled UL / DL data. In some embodiments, the specific resource configuration includes at least one of the following: bandwidth, maximum peak data rate, frequency range type, number of activated secondary cells (SCells), and / or subcarrier spacing.

[0272] In some embodiments, the maximum TBS of different transmission modes supported by the UE may be different. In some embodiments, there is no maximum TBS limit for the transmission mode with a higher ID. In some embodiments, the maximum TBS for the transmission mode with a higher ID is greater than the maximum TBS for the transmission mode with a lower ID.

[0273] In some embodiments, there are two types of transmission modes, including a first transmission mode and a second transmission mode. In some embodiments, the range of the maximum TBS of the first transmission mode can be determined based on at least one of the following parameters supported by the UE:

[0274] 1) Maximum bandwidth;

[0275] 2) The number of PRBs available to the UE in the bandwidth;

[0276] 3) Maximum number of layers;

[0277] 4) DL and / or UL peak data rate;

[0278] 5) Maximum modulation order;

[0279] 6) Maximum rate;

[0280] 7) Currently activated BWP;

[0281] 8) Scheduled activation BWP, etc.

[0282] In some embodiments, the above parameters are values ​​configured in the activated DL and / or UL BWP.

[0283] In some embodiments, the TBS determination is related to a base graph for low density parity check (LDPC) coding.

[0284] In some embodiments, N info Modified by a scaling factor. In some embodiments, the scaling factor is no greater than 1. In some embodiments, the scaling factor is configured by a higher layer parameter. In some embodiments, the scaling factor is determined based on the number of PRBs available for PUSCH and / or PDSCH and the maximum number of PRBs available for PUSCH and / or PDSCH of an activated and / or scheduled BWP.

[0285] In some embodiments, the UE may select a specific TBS determination step to determine the N value based on the TBS determination steps described in the above embodiments. info In some embodiments, the specific TBS determination step may be at least one step in the TBS determination process in the above embodiments.

[0286] Next, embodiments related to soft / limited cache size are described.

[0287] In some embodiments, the determination process of rate matching limited buffering for LDPC coding of UL-SCH and DL-SCH / PCH is based on the following parameters:

[0288] 1) Maximum number of layers in one TB for UL-SCH and / or DL-SCH / PCH;

[0289] 2) MCS table available to UE configured by higher layer parameters;

[0290] 3) The maximum modulation order corresponding to the available MCS table;

[0291] 4) Maximum bit rate;

[0292] 5) Number of PRBs;

[0293] 6) The number of code blocks;

[0294] 7) Type of transmission mode;

[0295] 8) Maximum number of resource units per PRB;

[0296] 9) The type of RNTI used to scramble the CRC of the DCI, etc.

[0297] In some embodiments, for determining TBS LBRM The number of PRBs for each bandwidth may be configured by a higher layer parameter. In some embodiments, if the higher layer parameter configures the UE to support a transmission mode type other than a specific transmission, the TBS used to determine LBRM The number of PRBs can be determined as the number of PRBs n defined for each bandwidth in NR Release 16 PRB,LBRM In some embodiments, if the higher layer parameters configure the UE to support a specific transmission mode, the TBS is used to determine LBRM The number of PRBs can be determined as the scaled number of PRBs n defined by the scaling factor for each bandwidth in NR Release 16. PRB,LBRM In some embodiments, if the high-level parameters are used to determine TBS LBRM The scaling factor of the number of PRBs is used to configure the UE, which is then used to determine the TBS LBRM The number of PRBs can be determined as the scaled number of PRBs n defined by the scaling factor for each bandwidth in NR Release 16. PRB,LBRM .

[0298] In some embodiments, the number of PRBs is determined as a quantized n' predefined in a specific table.PRB In some embodiments, the number of PRBs is quantized by a specific table. In some embodiments, the quantized n' in each range PRB The value is not greater than the corresponding quantized n' in the same range PRB The values ​​are shown in Table 6 below.

[0299] Table 6: n' PRB value

[0300] Maximum number of PRBs across all configured DL BWP and UL BWP respectively <![CDATA[n’ PRB ]]> Less than 33 32 33 to 66 66 67 to 107 107 108 to 135 135 136 to 162 162 163 to 217 217 Greater than 217 273

[0301] In some embodiments, the TBS determination process defined in the above method can be reused to determine the TBS LBRM .

[0302] In some embodiments, the UE determines the final TBS based on the above assumed parameters and uses the scaling factor (S RM ) and a predefined function to modify the final TBS to generate a modified final TBS. In some embodiments, the UE determines the modified final TBS as the TBS LBRM In some embodiments, the predefined function represents rounding, and / or rounding down, and / or rounding up, and / or keeping the original value.

[0303] In some embodiments, the UE determines the maximum TBS as TBS LBRM In some embodiments, the maximum TBS is reported by the UE. In some embodiments, the maximum TBS is related to at least one of the following parameters:

[0304] 1) Maximum bandwidth;

[0305] 2) The number of PRBs available to the UE in the bandwidth;

[0306] 3) Maximum number of layers;

[0307] 4) DL and / or UL peak data rate;

[0308] 5) Maximum modulation order;

[0309] 6) Maximum rate;

[0310] 7) Currently activated BWP;

[0311] 8) Scheduled activation BWP, etc.

[0312] In some embodiments, the maximum modulation order is determined as a value configured by a higher layer parameter. In some embodiments, the higher layer parameter is related to the type of transmission mode.

[0313] In some embodiments, the maximum code rate may be a value not greater than 948 / 1024. In some embodiments, the maximum code rate is determined as a value configured by a higher layer parameter. In some embodiments, the higher layer parameter is related to the type of transmission mode.

[0314] In summary, as can be seen from the foregoing description, embodiments include one or more of the following aspects:

[0315] 1) TBS determination is related to at least one of the following parameters:

[0316] a. Uplink or downlink data transmission;

[0317] b. Type of transmission mode;

[0318] c. Type of frequency range;

[0319] d. The type of RNTI for scrambling DCI format 0_1 ​​and / or DCI format 1_1 and / or DCI format 0_2 and / or DCI format 1_2 and / or the new DCI format for Release 16 DCI format;

[0320] e. The number of PRBs used for TBS determination;

[0321] f. Coverage capability;

[0322] g. Supported transmission parameter set μ;

[0323] h. Average OFDM symbol duration The value of .

[0324] 2) TBS can be determined by min(TBS determined by the TBS process in Release 16, maximum TBS).

[0325] a. Maximum TBS may be related to at least one of the following:

[0326] i. Uplink or downlink data transmission;

[0327] ii. Type of transmission mode;

[0328] iii. Type of frequency range;

[0329] iv. The type of RNTI for scrambling DCI format 0_1 ​​and / or DCI format 1_1 and / or DCI format 0_2 and / or DCI format 1_2 and / or the new DCI format for Release 16 DCI format;

[0330] v. The number of PRBs used for TBS determination;

[0331] vi. Coverage capability;

[0332] vii. The supported transmission parameter set μ;

[0333] viii. Average OFDM symbol duration The value of .

[0334] b. The maximum TBS of the first transmission mode is at least one of the elements in the first TBS set. The maximum TBS of the second transmission mode is at least one of the elements in the second TBS set.

[0335] i. The first TBS set may include at least one of the following elements {1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424, 27376, 51240} for PDSCH. The first TBS set may include at least one of the following elements {328, 408, 456, 504, 600, 712, 808, 936, 1000, 1736, 3752, 3824, 3840, 4008, 5160, 8424} for PUSCH.

[0336] ii. The second TBS set may include at least one of the following elements {8424, 15110, 15370, 15620, 15880, 16140, 27376, 50180, 51220} for PDSCH. The second TBS set may include at least one of the following elements {3824, 5160, 8424, 25100, 27376} for PUSCH.

[0337] iii. For UL / DL, the value of each element in the first TBS set is not greater than 5160. The value of each element in the second TBS set is not less than 8448.

[0338] iv. For UL / DL, the value of each element in the first TBS set is not greater than 3840. The value of each element in the second TBS set is not less than 3840.

[0339] 3) TBS is determined through some specific steps of the TBS determination process.

[0340] a. If the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , the UE uses steps 1)-3) to determine the TBS for PDSCH and PUSCH.

[0341] b. If the UE is configured to support LDPC based Figure 1, the UE may use steps 1)-4) of the TBS determination procedure in Release 16 for PDSCH and PUSCH. info >3824, UE can use the new TBS table to calculate the value of TBS (N' info ) Determine the final TBS. N' info According to step 4) based on N info The TBS in the TBS table should meet the following conditions:

[0342] 1) and and / or

[0343] 2) and and / or

[0344] 3) in, and / or

[0345] 4) in, and / or

[0346] 5) in, and and / or

[0347] 6) The maximum value of E is not greater than the threshold, where the threshold is 84064.

[0348] c. If the UE only supports the LDPC basis configured by the higher layer parameters Figure 2 , the final TBS can be obtained by using the modified N in step 4) info (N' info ),pass To determine,

[0349] d. The number of PRBs is determined by (S PRB *n PRB ) to quantify. The scaling factor (S PRB ) may be related to the bandwidth of the UE's activated UL / DL BWP.

[0350] e. For UL data scheduling, if the UE is configured with a specific transmission mode, the MCS table with transformed precoding is used. The transmission mode may be related to the following:

[0351] i. The type of RNTI used to scramble the DCI CRC,

[0352] ii. Peak data rate,

[0353] iii. Battery life time,

[0354] iv. Supported modulation orders,

[0355] v. Maximum bit rate,

[0356] vi. Maximum TBS supported,

[0357] vii. the maximum number of PRBs associated with the bandwidth,

[0358] viii. Target BLER for data transmission,

[0359] ix. Supported end-to-end delay,

[0360] x. The total number of frequency range (FR) types supported,

[0361] xi. Coverage enhancement capability,

[0362] xii. Power level,

[0363] xiii. Ability to process time,

[0364] xiv. Types of use cases,

[0365] xv. Duplex mode.

[0366] 4) The buffer size for LDPC rate matching is determined as the maximum TBS. The maximum TBS can be configured by a high-level parameter. The high-level parameter can be at least one of the following:

[0367] a. Maximum bandwidth;

[0368] b. The number of PRBs available to the UE in the bandwidth;

[0369] c. Maximum number of layers;

[0370] d. DL and / or UL peak data rate;

[0371] e. Maximum modulation order;

[0372] f. Maximum rate;

[0373] g. Currently activated BWP;

[0374] h. The type of RNTI used to scramble the CRC of the DCI.

[0375] 5) Different transmission modes include different parameter values, where the parameter is at least one of the following:

[0376] a. Maximum bandwidth,

[0377] b. Minimum bandwidth,

[0378] c. The maximum number of layers in the spatial domain,

[0379] d. The maximum number of antenna ports used for data transmission,

[0380] e. Peak data rate,

[0381] f.Battery life time,

[0382] g. Supported modulation orders,

[0383] h. Maximum bit rate,

[0384] i. Maximum TBS supported,

[0385] j. The maximum number of PRBs associated with the bandwidth,

[0386] k. Target BLER for data transmission,

[0387] l. Supported end-to-end delay,

[0388] m. The total number of frequency range (FR) types supported,

[0389] n. Coverage enhancement capability,

[0390] o. Power level,

[0391] p. Processing time capability,

[0392] q. Type of use case,

[0393] r. Duplex mode, etc.

[0394] Figure 3 A flow chart illustrating a process according to an embodiment according to an embodiment of the present disclosure is shown. Figure 3 The process shown may be used in a wireless terminal (e.g., UE) and includes the following steps:

[0395] Step 300: Determine an intermediate TBS of a transport block transmitted between a wireless terminal and a radio network node based on a plurality of transmission parameters.

[0396] Step 301: In response to at least one event, modify the intermediate TBS to generate a corrected value TBS.

[0397] Step 302: Determine a final TBS based on the corrected value TBS and a specific step in response to at least one event.

[0398] More specifically, the wireless terminal determines an intermediate TBS of a transport block transmitted between the wireless terminal and the wireless network node based on a plurality of transmission parameters. Next, the wireless terminal modifies the intermediate TBS in response to at least one event to generate a revised value TBS. Based on the revised value TBS and a specific step in response to at least one event, the wireless terminal determines a final TBS of a transport block transmitted between the wireless terminals.

[0399] In an embodiment, the multiple transmission parameters include at least one of the following: (1) DCI format, (2) type of transmission mode configured for the wireless terminal, (3) type of frequency range, (4) type of RNTI for scrambling the CRC of the DCI, (5) number of PRBs for determining the middle TBS, (6) MCS index for determining the code rate and modulation order, (7) coverage capability of the wireless terminal, (8) value of subcarrier spacing, or (9) value of average OFDM symbol duration.

[0400] In an embodiment, the wireless terminal may receive a signal indicative of a plurality of transmission parameters from a wireless network node.

[0401] The features and / or details of the plurality of transmission parameters and / or at least one event and / or specific steps may refer to the above embodiments and are not described again herein for the sake of brevity.

[0402] Figure 4 A flow chart illustrating a process according to an embodiment according to an embodiment of the present disclosure is shown. Figure 4 The process shown may be used in a wireless network node (e.g., BS) and includes the following steps:

[0403] Step 400: Send a signal indicating a plurality of transmission parameters to a wireless terminal.

[0404] Step 401: determine an intermediate TBS of a transport block transmitted between a wireless terminal and a radio network node based on the plurality of transmission parameters.

[0405] Step 402: In response to at least one event, modify the intermediate TBS to generate a corrected value TBS.

[0406] Step 403: Determine a final TBS based on the correction value TBS and a specific step in response to at least one event.

[0407] Specifically, the radio network node sends a signal to the wireless terminal (e.g., UE) to indicate multiple transmission parameters. In this embodiment, the radio network node determines the intermediate TBS of the transmission block transmitted between the wireless terminal and the radio network node based on the multiple transmission parameters. Next, the radio network node modifies the intermediate TBS in response to at least one event to generate a modified value TBS. Based on the modified value TBS and a specific step in response to at least one event, the radio network node determines the final TBS of the transmission block transmitted between the wireless terminals.

[0408] As an alternative or additional option, the radio network node may receive from the wireless terminal a TBS determined by the wireless terminal.

[0409] In an embodiment, the multiple transmission parameters include at least one of the following: (1) DCI format, (2) type of transmission mode configured for the wireless terminal, (3) type of frequency range, (4) type of RNTI for scrambling the CRC of the DCI, (5) number of PRBs for determining the middle TBS, (6) MCS index for determining the code rate and modulation order, (7) coverage capability of the wireless terminal, (8) value of subcarrier spacing, or (9) value of average OFDM symbol duration.

[0410] The features and / or details of the plurality of transmission parameters and / or at least one event and / or specific steps may refer to the aforementioned embodiments and are not described again herein for the sake of brevity.

[0411] Although various embodiments of the present disclosure have been described above, it should be understood that they are presented only by way of example rather than by way of limitation. Similarly, various figures may depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the present disclosure. However, these personnel should understand that the present disclosure is not limited to the example architectures or configurations shown, but can be implemented using various alternative architectures and configurations. In addition, as those of ordinary skill in the art should understand, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments.

[0412] It should also be understood that any reference to an element using names such as "first", "second" etc. herein does not generally limit the quantity or order of these elements. On the contrary, these names can be used as a convenient means of distinguishing two or more elements or element instances in this article. Therefore, reference to a first element and a second element does not mean that only two elements can be used, or that the first element must be located before the second element in some way.

[0413] In addition, it should be understood by those skilled in the art that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0414] The skilled person should also understand that any of the various illustrative logical blocks, units, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design codes containing instructions (which, for convenience, may be referred to herein as "software" or "software units"), or any combination of these technologies.

[0415] In order to clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, units, circuits and steps have been described above generally according to their functions. Whether such functions are implemented as hardware, firmware, software, or a combination of these technologies depends on the specific application and the design constraints imposed on the entire system. Those skilled in the art can implement the described functions in various ways for each specific application, but such implementation decisions will not lead to deviations from the scope of the present disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc. can be configured to perform one or more of the functions described herein. As used herein with respect to a specified operation or function, the term "configured to" or "configured for" refers to a processor, device, component, circuit, structure, machine, unit, etc. that is physically constructed, programmed and / or arranged to perform a specified operation or function.

[0416] In addition, the technician should understand that the various illustrative logic blocks, units, devices, components and circuits described herein can be implemented in or performed by an integrated circuit (IC), which can include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logic blocks, units and circuits may also include antennas and / or transceivers to communicate with various components within a network or within a device. The general-purpose processor may be a microprocessor, but in an alternative solution, the processor may be any conventional processor, controller or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration for performing the functions described herein. If implemented in software, the function may be stored on a computer-readable medium as one or more instructions or codes. Therefore, the steps of the method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium.

[0417] Computer-readable media include computer storage media and communication media, and communication media include any media that can enable a computer program or code to be transferred from one place to another. Storage media can be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or can be used to store desired program codes in the form of instructions or data structures and any other media that can be accessed by a computer.

[0418] In this application, the term "unit" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the relevant functions described herein. In addition, for the purpose of discussion, various units are described as discrete units; however, it will be apparent to those of ordinary skill in the art that two or more units can be combined to form a single unit that performs the associated functions according to the embodiments of the present disclosure.

[0419] In addition, memory or other storage and communication components may be used in embodiments of the present disclosure. It should be understood that, for the purpose of clarity, the above description has described embodiments of the present disclosure with reference to different functional units and processors. However, it is apparent that any appropriate functional distribution between different functional units, processing logic elements or domains may be used without departing from the present disclosure. For example, functions shown as being performed by separate processing logic elements or controllers may be performed by the same processing logic elements or controllers. Therefore, references to specific functional units are only references to suitable devices for providing the described functions, rather than indications of strict logical or physical structures or organizations.

[0420] Various modifications to the embodiments described in this disclosure should be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but is to be given the broadest scope consistent with the novel features and principles disclosed herein, as described in the following claims.

Claims

1. A wireless communication method for use in a wireless terminal, the wireless communication method comprising: determining a median transport block size (TBS) of a transport block transmitted between the wireless terminal and the radio network node based on a plurality of transmission parameters, In response to at least one event, modifying the intermediate value TBS to generate a modified value TBS, and determining a final TBS based on the correction value TBS and a specific step in response to the at least one event, wherein the specific step is determined based on the plurality of transmission parameters, The multiple transmission parameters include at least one of the following: the type of transmission mode configured for the wireless terminal, The modulation and coding scheme (MCS) index used to determine the code rate and modulation order, the coverage capability of the wireless terminal, wherein the transmission mode is determined based on one of a user equipment (UE) capability and a UE category, wherein the UE is a reduced capability UE corresponding to a UE having one or more restricted parameters, and The restricted parameters include at least one of the following: bandwidth, data rate supported by the UE, modulation order, code rate, and number of layers.

2. The wireless communication method according to claim 1, wherein: The type of the transmission mode of the wireless terminal is associated with at least one of the following: the maximum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, The maximum number of antenna ports used for transmitting signals, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the modulation order supported by the wireless terminal, the maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth supported by the wireless terminal, The number of frequency range FR types supported by the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, a type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance, or a wearable device, or The duplex mode of the wireless terminal.

3. The wireless communication method according to claim 1 or 2, wherein: The data rate for a given number of aggregated carriers in a band or band combination is determined as follows: Among them, S (j) is a new scaling factor and is not greater than 1, J is the number of aggregated component carriers in the band or band combination; R max is the maximum rate supported by the UE; is the maximum number of layers supported by the UE for the jth component carrier; is the maximum modulation order supported by the UE; f (j) is the scaling factor configured by high-level parameters; is the average OFDM symbol duration in a subframe of parameter set μ; is the bandwidth BW with parameter set μ supported by the UE (j) The maximum RB allocation in BW (j) It is the maximum bandwidth supported by the UE in a given frequency band or frequency band combination; OH (j) It is the overhead of the frequency range FR1 for DL ​​or UL or the overhead of the frequency range FR2 for DL ​​or UL.

4. The wireless communication method according to claim 3, wherein: The ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and The maximum modulation order supported by the wireless terminal is associated with at least one of the following: the number of PRBs allocated for PUSCH / PDSCH, the number of layers, and the type of transmission mode.

5. A wireless communication method for use in a wireless network node, the wireless communication method comprising: sending a signal including a plurality of transmission parameters to a wireless terminal; determining a median transport block size (TBS) of transport blocks transmitted between the wireless terminal and the radio network node based on the plurality of transmission parameters, In response to at least one event, modifying the intermediate value TBS to generate a modified value TBS, and determining a final TBS based on the correction value TBS and a specific step in response to the at least one event, wherein the specific step is determined based on the plurality of transmission parameters, The multiple transmission parameters include at least one of the following: the type of transmission mode configured for the wireless terminal, The modulation and coding scheme (MCS) index used to determine the code rate and modulation order, The coverage capability of wireless terminals, wherein the transmission mode is determined based on one of a user equipment (UE) capability and a UE category, wherein the UE is a reduced capability UE corresponding to a UE having one or more restricted parameters, and The restricted parameters include at least one of the following: bandwidth, data rate supported by the UE, modulation order, code rate, and number of layers.

6. The wireless communication method according to claim 5, wherein: The type of the transmission mode of the wireless terminal is associated with at least one of the following: the maximum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the maximum number of antenna ports used to transmit the signal, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the modulation order supported by the wireless terminal, the maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth supported by the wireless terminal, The number of frequency range FR types supported by the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, a type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance, or a wearable device, or The duplex mode of the wireless terminal.

7. The wireless communication method according to claim 5 or 6, wherein: The data rate for a given number of aggregated carriers in a band or band combination is determined as follows: Among them, S (j) is a new scaling factor and is not greater than 1, J is the number of aggregated component carriers in the band or band combination; R max is the maximum rate supported by the UE; is the maximum number of layers supported by the UE for the jth component carrier; is the maximum modulation order supported by the UE; f (j) is the scaling factor configured by high-level parameters; is the average OFDM symbol duration in a subframe of parameter set μ; is the bandwidth BW with parameter set μ supported by the UE (j) The maximum RB allocation in BW (j) It is the maximum bandwidth supported by the UE in a given frequency band or frequency band combination; OH (j) It is the overhead of the frequency range FR1 for DL ​​or UL or the overhead of the frequency range FR2 for DL ​​or UL.

8. The wireless communication method according to claim 7, wherein: The ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and The maximum modulation order supported by the wireless terminal is associated with at least one of the following: the number of PRBs allocated for PUSCH / PDSCH, the number of layers, and the type of transmission mode.

9. A wireless terminal, comprising a processor, wherein the processor is configured to: determining a median transport block size (TBS) of a transport block transmitted between the wireless terminal and the radio network node based on a plurality of transmission parameters, In response to at least one event, modifying the intermediate value TBS to generate a modified value TBS, and determining a final TBS based on the correction value TBS and a specific step in response to the at least one event, in, The specific step is determined based on the plurality of transmission parameters, The multiple transmission parameters include at least one of the following: the type of transmission mode configured for the wireless terminal, The modulation and coding scheme (MCS) index used to determine the code rate and modulation order, The coverage capability of wireless terminals, wherein the transmission mode is determined based on one of a user equipment (UE) capability and a UE category, wherein the UE is a reduced capability UE corresponding to a UE having one or more restricted parameters, and The restricted parameters include at least one of the following: bandwidth, data rate supported by the UE, modulation order, code rate, and number of layers.

10. The wireless terminal according to claim 9, wherein: The type of the transmission mode of the wireless terminal is associated with at least one of the following: the maximum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, The maximum number of antenna ports used for transmitting signals, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the modulation order supported by the wireless terminal, the maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth supported by the wireless terminal, The number of frequency range FR types supported by the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, a type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance, or a wearable device, or The duplex mode of the wireless terminal.

11. The wireless terminal according to claim 9 or 10, wherein: The data rate for a given number of aggregated carriers in a band or band combination is determined as follows: Among them, S (j) is a new scaling factor and is not greater than 1, J is the number of aggregated component carriers in the band or band combination; R max is the maximum rate supported by the UE; is the maximum number of layers supported by the UE for the jth component carrier; is the maximum modulation order supported by the UE; f (j) is the scaling factor configured by high-level parameters; is the average OFDM symbol duration in a subframe of parameter set μ; is the bandwidth BW with parameter set μ supported by the UE (j) The maximum RB allocation in BW (j) It is the maximum bandwidth supported by the UE in a given frequency band or frequency band combination; OH (j) It is the overhead of the frequency range FR1 for DL ​​or UL or the overhead of the frequency range FR2 for DL ​​or UL.

12. The wireless terminal according to claim 11, wherein: The ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and The maximum modulation order supported by the wireless terminal is associated with at least one of the following: the number of PRBs allocated for PUSCH / PDSCH, the number of layers, and the type of transmission mode.

13. A wireless network node, comprising: a communication unit configured to send a signal indicating a plurality of transmission parameters to a wireless terminal, and A processor, the processor being configured to: determining a median transport block size (TBS) of transport blocks transmitted between the wireless terminal and the radio network node based on the plurality of transmission parameters, In response to at least one event, modifying the intermediate value TBS to generate a modified value TBS, and determining a final TBS based on the correction value TBS and the specific steps in response to the at least one event, and wherein the specific step is determined based on the plurality of transmission parameters, The multiple transmission parameters include at least one of the following: the type of transmission mode configured for the wireless terminal, The modulation and coding scheme (MCS) index used to determine the code rate and modulation order, The coverage capability of wireless terminals, wherein the transmission mode is determined based on one of a user equipment (UE) capability and a UE category, wherein the UE is a reduced capability UE corresponding to a UE having one or more restricted parameters, and The restricted parameters include at least one of the following: bandwidth, data rate supported by the UE, modulation order, code rate, and number of layers.

14. The wireless network node according to claim 13, wherein: The type of the transmission mode of the wireless terminal is associated with at least one of the following: the maximum bandwidth supported by the wireless terminal, the maximum number of layers supported by the wireless terminal, the maximum number of antenna ports used to transmit the signal, the peak data rate of the uplink and / or downlink supported by the wireless terminal, the modulation order supported by the wireless terminal, the maximum TBS supported by the wireless terminal, a maximum number of physical resource blocks associated with a bandwidth supported by the wireless terminal, The number of frequency range FR types supported by the wireless terminal, the power level of the wireless terminal, the processing time capability of the wireless terminal, a type of use case of the wireless terminal, wherein the use case includes at least one of an industrial wireless sensor, video surveillance, or a wearable device, or The duplex mode of the wireless terminal.

15. The wireless network node according to claim 13 or 14, wherein: The data rate for a given number of aggregated carriers in a band or band combination is determined as follows: Among them, S (j) is a new scaling factor and is not greater than 1, J is the number of aggregated component carriers in the band or band combination; R max is the maximum rate supported by the UE; is the maximum number of layers supported by the UE for the jth component carrier; is the maximum modulation order supported by the UE; f (j) is the scaling factor configured by high-level parameters; is the average OFDM symbol duration in a subframe of parameter set μ; is the bandwidth BW with parameter set μ supported by the UE (j) The maximum RB allocation in BW (j) It is the maximum bandwidth supported by the UE in a given frequency band or frequency band combination; OH (j) It is the overhead of the frequency range FR1 for DL ​​or UL or the overhead of the frequency range FR2 for DL ​​or UL.

16. The wireless network node according to claim 15, wherein: The ratio of the maximum modulation order supported by the wireless terminal to the maximum modulation order in the configurable MCS table is a value in the range [0.25, 1], and The maximum modulation order supported by the wireless terminal is associated with at least one of the following: the number of PRBs allocated for PUSCH / PDSCH, the number of layers, and the type of transmission mode.

17. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the wireless communication method according to any one of claims 1 to 8.

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