Method and apparatus for determining MCS for node in wireless communication

Abstract

Disclosed in the present application are a method and apparatus for determining an MCS for a node in wireless communication. A first node receives first signaling, and operates a first data signal and a first DMRS in a first RE set; the operation is receiving or transmitting. The first signaling indicates the first RE set; the first signaling is used to indicate an MCS of the first data signal from a first MCS set; a plurality of MCS sets respectively correspond to a plurality of DMRS configurations, and each MCS set comprises a plurality of MCSs; the configuration of the first DMRS is one of the plurality of DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; each DMRS configuration comprises one or more of positions of REs occupied in one RE block, a time domain density, a frequency domain density, an overlap between DMRS REs and data REs, and an energy proportion.

Description

A method and apparatus for determining the MCS in a node for wireless communication. Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to schemes and apparatus for determining the MCS in wireless communication systems. Background Technology

[0002] In current 5G wireless communication systems, the DMRS (Demodulation Reference Signal) is used to estimate the channels of the PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel), and the DMRS RE (Resource Element) and data RE are orthogonal. The advantage is that it reduces or avoids interference between the DMRS and data, but the disadvantages include the need to reserve sufficient REs for the DMRS to obtain accurate channel estimation, introducing non-negligible overhead, and reducing data transmission efficiency. In 5G, the size of the transport blocks carried by the PDSCH and PUSCH is calculated and looked up in the TBS (Transport Block Size) table based on the number of scheduled symbols, the number of RBs (Resource Blocks), the MCS (Modulation and Coding Scheme), and the overhead.

[0003] Improving transmission efficiency is a key factor in the future technological evolution of 5G and 6G. With the popularization of AI (Artificial Intelligence) or ML (Machine Learning) technologies, AI / ML-based channel estimation, demodulation, and decoding have become research hotspots. The specifications for AI models may extend beyond the scope of 3GPP (besides the reference model used for performance calibration). The specific implementation methods for AI / ML training and inference may be determined by hardware manufacturers themselves, and may be based on classic models such as Transformer architecture, RNN (Recurrent Neural Network), CNN (Conventional Neural Networks), or hybrid models composed of multiple models. Summary of the Invention

[0004] The applicant's research found that in the future technological evolution of 5G and 6G, multiple DMRS configurations can adapt to various transmission environments, which is beneficial to improving channel estimation accuracy, improving data transmission reliability, and better balancing DMRS overhead and data transmission efficiency. Among these, how to determine the MCS under multiple DMRS configurations is a key issue that needs to be addressed.

[0005] In view of the above problems, this application discloses a solution. It should be noted that although the motivation for this application stems from AI / ML-based processing (such as encoding / decoding, channel estimation) technologies, this application is also applicable to other AI / ML-based receiving / transmitting technologies, and technologies combining AI / ML-based processing with traditional non-AI / ML processing. This is especially true considering that specific AI / ML algorithms are likely non-standardized or implemented by hardware vendors themselves. Furthermore, adopting a unified solution can reduce implementation complexity or cost, or improve performance. Unless otherwise specified, the embodiments and features in the first node of this application can be applied to the second node. Unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0006] Where necessary, the interpretation of terms used in this application may be referenced to the descriptions in the TS38 series of specification protocols of the 3GPP (3rd Generation Partner Project).

[0007] This application discloses a method used in a first node of wireless communication, characterized by comprising:

[0008] Receive the first signaling;

[0009] In the first RE set, operate the first data signal and the first DMRS; the operation is either receiving or transmitting.

[0010] Wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations respectively, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time domain density, frequency domain density, overlap between DMRS REs and data REs, and energy ratio.

[0011] As an example, the problem this application aims to solve includes: how to determine the MCS under multiple DMRS configurations.

[0012] As an example, in the above method, the candidate MCSs (i.e., the first set of MCSs) for the data signal depend on the configuration of its DMRS. Advantages include: the applicable MCS sets for the data signal can differ under multiple DMRS configurations; the optimized design of the MCS candidates provides high flexibility and adaptability. Furthermore, compared to multiple DMRS configurations sharing a single, larger set of MCSs, the above method reduces MCS indication overhead.

[0013] As one example, the first node is a user equipment.

[0014] As an example, the first node is a relay node.

[0015] As one example, the first node is a terminal.

[0016] As one example, the terminal is a user equipment.

[0017] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; and in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0018] As an example, in the above method, the first DMRS configuration is compatible with the orthogonal DMRS design in current 5G systems (i.e., DMRS REs and data REs are orthogonal). In the second DMRS configuration, data signals and DMRS can occupy the same REs, increasing the number of REs that can be occupied by data signals and improving data transmission efficiency.

[0019] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, DMRS REs and data REs partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration.

[0020] As an example, in the above method, different DMRS configurations can have different DMRS energy proportions. The advantage is that different energy proportions better adapt to different channel environments, better balancing channel estimation accuracy and data transmission efficiency.

[0021] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets include a first MCS set and a second MCS set, wherein the first MCS set corresponds to the first DMRS configuration and the second MCS set corresponds to the second DMRS configuration; the first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0022] As an example, in the above method, different DMRS configurations have at least one of a minimum spectral efficiency and a maximum spectral efficiency. The advantage is that different minimum / maximum spectral efficiencies better adapt to different channel environments, maximizing data transmission reliability and capacity while ensuring channel estimation accuracy.

[0023] According to one aspect of this application, in one of the plurality of DMRS configurations, the energy percentage of a DMRS on a RE depends on either the RE block to which the RE belongs or the position of the RE within the RE block.

[0024] As an example, the energy allocation design of DMRS in the above method is highly flexible and adaptable. Its advantages include excellent adaptation to channel characteristics (e.g., time-varying characteristics, frequency selectivity), high channel estimation accuracy, improved data transmission reliability, and increased transmission capacity.

[0025] According to one aspect of this application, the first data signal carries a first transmission block, the size of which is one TBS in a first TBS set; multiple TBS sets correspond to the multiple DMRS configurations respectively, the TBS set includes multiple TBSs, the TBS is a positive integer, and the first TBS set is the TBS set corresponding to the configuration of the first DMRS.

[0026] As an example, the advantages of the above method include: different DMRS configurations can adapt to different channel environments; the TBS set of data can be different under different DMRS configurations, the TBS candidate is optimized, the data transmission reliability is improved, the data transmission capacity is increased, and the flexibility and adaptability are high.

[0027] According to one aspect of this application, the size of the first transport block depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0028] As an example, in the above method, the method for determining TBS is compatible with the design in current 5G systems, and the impact of standardization is relatively small.

[0029] According to one aspect of this application, the first data signal carries a first transport block; wherein the first signaling is used to indicate a first overhead from a plurality of overheads, the size of the first transport block being the TBS under the first overhead; the TBS under the first overhead depending on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal.

[0030] As an example, in the above method, different overheads can correspond to different TBSs; compared with 5G, the above method can achieve the purpose of different TBSs through flexible overhead indication.

[0031] According to one aspect of this application, the first data signal carries a first transport block; the first signaling is used to indicate the size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the first TBS group comprising a plurality of TBSs, the TBS being a positive integer; the first TBS group depending on the MCS of the first data signal.

[0032] As an example, in the above method, the candidate for the transport block size carried by the data signal depends on the MCS of the data signal. Advantages include: compared to the standard TBS table used in 5G, the above method optimizes the design of the TBS candidate, offering high flexibility and adaptability.

[0033] According to one aspect of this application, the MCS of the first data signal is one of a plurality of MCSs, the plurality of MCSs respectively correspond to a plurality of TBS groups, the TBS group includes one or more TBSs, and the first TBS group is the TBS group corresponding to the MCS of the first data signal.

[0034] As an example, the advantages of the above method include: different MCSs can adapt to different channel transmission environments; under different MCSs, the data TBS candidates can be different, the TBS candidates are optimized, the data transmission reliability is improved, the data transmission capacity is increased, and the flexibility and adaptability are high.

[0035] According to one aspect of this application, the first TBS group depends on a reference TBS and a first offset; the reference TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0036] As an example, the design is simplified and the implementation is simple in the above method by using a first offset.

[0037] This application discloses a method used in a second node for wireless communication, characterized by comprising:

[0038] Send the first signaling;

[0039] The first data signal and the first DMRS are executed in the first RE set; the execution is either sending or receiving.

[0040] Wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations respectively, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time domain density, frequency domain density, overlap between DMRS REs and data REs, and energy ratio.

[0041] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; and in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0042] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, DMRS REs and data REs partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration.

[0043] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets include a first MCS set and a second MCS set, wherein the first MCS set corresponds to the first DMRS configuration and the second MCS set corresponds to the second DMRS configuration; the first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0044] According to one aspect of this application, in one of the plurality of DMRS configurations, the energy percentage of a DMRS on a RE depends on either the RE block to which the RE belongs or the position of the RE within the RE block.

[0045] According to one aspect of this application, the first data signal carries a first transmission block, the size of which is one TBS in a first TBS set; multiple TBS sets correspond to the multiple DMRS configurations respectively, the TBS set includes multiple TBSs, the TBS is a positive integer, and the first TBS set is the TBS set corresponding to the configuration of the first DMRS.

[0046] According to one aspect of this application, the first data signal carries a first transport block; wherein the first signaling is used to indicate a first overhead from a plurality of overheads, the size of the first transport block is the TBS under the first overhead; the TBS under the first overhead depends on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal;

[0047] According to one aspect of this application, the first data signal carries a first transport block; the first signaling is used to indicate the size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the first TBS group comprising a plurality of TBSs, the TBS being a positive integer; the first TBS group depending on the MCS of the first data signal.

[0048] According to one aspect of this application, the MCS of the first data signal is one of a plurality of MCSs, the plurality of MCSs respectively correspond to a plurality of TBS groups, the TBS group includes one or more TBSs, and the first TBS group is the TBS group corresponding to the MCS of the first data signal.

[0049] According to one aspect of this application, the first TBS group depends on a reference TBS and a first offset; the reference TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0050] This application discloses a first node used for wireless communication, characterized in that it comprises:

[0051] The first receiver receives the first signaling;

[0052] A first processor operates a first data signal and a first DMRS in a first RE set; the operation is either receiving or transmitting.

[0053] Wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations respectively, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time domain density, frequency domain density, overlap between DMRS REs and data REs, and energy ratio.

[0054] This application discloses a second node used for wireless communication, characterized in that it comprises:

[0055] The second transmitter sends the first signal;

[0056] The second processor executes the first data signal and the first DMRS in the first RE set; the execution is either sending or receiving.

[0057] Wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations respectively, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time domain density, frequency domain density, overlap between DMRS REs and data REs, and energy ratio.

[0058] As an example, compared with conventional solutions, this application has the following advantages:

[0059] - The set of MCS applicable to the data signal can be different under multiple DMRS configurations, which optimizes the design of TBS candidates;

[0060] - Reduced MCS indication overhead;

[0061] - Adapted to different channel environments;

[0062] - Better balance between channel estimation accuracy and data transmission efficiency;

[0063] - Improved data transmission reliability;

[0064] -Increased data transmission capacity;

[0065] - Highly flexible and adaptable;

[0066] - It can support AI / ML-based wireless channel processing, including demodulation, decoding, channel estimation and other technologies. Attached Figure Description

[0067] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0068] Figure 1 illustrates a flowchart of a first signaling, a first data signal, and a first DMRS according to an embodiment of this application;

[0069] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of this application;

[0070] Figure 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application;

[0071] Figure 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of this application;

[0072] Figures 5A-5B respectively illustrate the transmission between a first node and a second node according to an embodiment of this application;

[0073] Figures 6A-6C respectively illustrate schematic diagrams of multiple DMRS configurations according to an embodiment of this application;

[0074] Figure 7 illustrates a schematic diagram of multiple DMRS configurations according to another embodiment of this application;

[0075] Figure 8 shows a schematic diagram of a plurality of MCS sets according to an embodiment of the present application;

[0076] Figure 9 shows a schematic diagram of the size of a first transport block according to an embodiment of this application;

[0077] Figure 10 shows a schematic diagram of the size of a first transport block according to another embodiment of this application;

[0078] Figure 11 shows a schematic diagram of the size of a first transport block according to another embodiment of this application;

[0079] Figure 12 shows a schematic diagram of the relationship between the first TBS group and the MCS of the first data signal according to an embodiment of this application;

[0080] Figure 13 shows a schematic diagram of the relationship between the first TBS group and the MCS of the first data signal according to another embodiment of this application;

[0081] Figure 14 shows a schematic diagram of TBS determination according to an embodiment of this application;

[0082] Figure 15 shows a structural block diagram of a processing apparatus for a first node according to an embodiment of this application;

[0083] Figure 16 shows a structural block diagram of a processing apparatus for a second node according to an embodiment of the present application. Detailed Implementation

[0084] The technical solutions of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Considering performance, flexibility, complexity, overhead, and compatibility, those skilled in the art are motivated to flexibly combine the embodiments in different drawings without conflict, such as, but not limited to, the embodiments in Figure 1 and the embodiments in Figures 5A-16, the embodiments in Figure 5A and the embodiments in Figures 6A-16, etc.

[0085] Example 1

[0086] Example 1 illustrates a flowchart of a first signaling, a first data signal, and a first DMRS according to an embodiment of this application, as shown in Figure 1. In Figure 1, each block represents a step.

[0087] In Embodiment 1, the first node receives a first signaling in step 101; and operates a first data signal and a first DMRS in a first RE set in step 102; the operation is receiving or transmitting; wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0088] As an example, the REs occupied by the first data signal and the first DMRS in the first RE set are orthogonal.

[0089] As one embodiment, the first data signal and the first DMRS occupy part or all of the REs in the first RE set, respectively.

[0090] As one embodiment, the first signaling is carried by RRC signaling or the first signaling includes MAC CE.

[0091] As one embodiment, the first signaling is transmitted on a physical layer channel or the first signaling includes DCI (Downlink Control Information).

[0092] As an example, the first data signal is transmitted on the physical layer channel carrying the data.

[0093] As an example, the operation is sending, the execution is receiving, and the first data signal is transmitted on PUSCH (Physical Uplink Shared Channel).

[0094] As an example, the operation is sending, the execution is receiving, and the first data signal is mapped to UL-SCH (Uplink Shared Channel).

[0095] As one embodiment, the operation is sending, the execution is receiving, and the first data signal carries UL-SCH (Uplink Shared Channel) data.

[0096] As an example, the operation is receiving, the execution is sending, and the first data signal is transmitted on PDSCH (Physical Downlink Shared Channel).

[0097] As an example, the operation is receiving, the execution is sending, and the first data signal is mapped to DL-SCH (Downlink Shared Channel).

[0098] As one embodiment, the operation is receiving, the execution is sending, and the first data signal carries DL-SCH (Downlink Shared Channel) data.

[0099] As an example, the data in the first data signal comes from DRB (Data Radio Bearer).

[0100] As an example, the first data signal is obtained after the first transport block undergoes at least channel coding, scrambling, modulation, layer mapping, precoding, mapping to resource element, and OFDM (Orthogonal Frequency Division Multiplexing) baseband signal generation.

[0101] As an example, the first data signal is obtained after the first transport block undergoes at least channel coding, scrambling, modulation, layer mapping, transform precoding, precoding, mapping to resource element, and OFDM (Orthogonal Frequency Division Multiplexing) baseband signal generation.

[0102] As an example, the first signaling indicates at least one RB and at least one symbol, and the first RE set includes all REs on the at least one RB and the at least one symbol.

[0103] As one embodiment, the first RE set includes multiple RE blocks orthogonal in the frequency domain, each of the multiple RE blocks including the same number of REs, each of the multiple RE blocks occupying the same number of subcarriers or RBs (Resource Blocks), and each of the multiple RE blocks occupying the same number of symbols.

[0104] As an example, the first RE set includes a plurality of RE blocks orthogonal in the frequency domain, each of the plurality of RE blocks being an RB in the frequency domain, and the plurality of RE blocks occupying the same symbol.

[0105] As one embodiment, the first RE set includes multiple RE blocks that are orthogonal in the frequency domain. The multiple RE blocks belong to multiple sub-bands in the frequency domain, and the multiple RE blocks occupy the same symbol.

[0106] As an example, the first RE set includes multiple RE blocks that are orthogonal in the frequency domain, each of which belongs to a different carrier in the frequency domain and occupies the same symbol.

[0107] Typically, an RE occupies one subcarrier in the frequency domain and one symbol in the time domain.

[0108] As an example, the symbol is a single-carrier symbol.

[0109] As an example, the symbol is a multi-carrier symbol.

[0110] As an example, the symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0111] As an example, the symbols are subjected to transformation precoding.

[0112] As an example, the symbol is generated by transform precoding followed by IFFT (Inverse Fast Fourier Transform).

[0113] As an example, the symbol is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbol.

[0114] As an example, the symbol is either SC-FDMA (Single Carrier-Frequency Division Multiple Access) or FBMC (Filter Bank Multi Carrier).

[0115] As an example, the first signaling indicates the scheduling information of the first data signal, which includes one or more of the following: the port of the first DMRS, the configuration of the first DMRS, the number of layers, the TCI (Transmission configuration indicator) status or beam, MCS, the occupied RB (Resource block) or subcarrier, the occupied symbol, and the HARQ process number.

[0116] In the above method, the total number of ports included in the first DMRS is equal to the total number of layers included in the first data signal.

[0117] As one embodiment, a field in the first signaling is used to indicate the MCS of the first data signal from the first MCS set, or a field in the first signaling indicates the index of the MCS of the first data signal in the first MCS set.

[0118] As an example, the first signaling is used to explicitly or implicitly indicate some or all of the information in the configuration of the first DMRS.

[0119] As one embodiment, the first signaling indicates some or all of the information in the configuration of the first DMRS.

[0120] As an example, the first signaling indicates which of a plurality of DMRS configurations the first DMRS configuration is; the DMRS configuration includes one or more of the following: the location of the RE occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0121] As an example, the same field in the first signaling indicates the port of the first DMRS and some or all of the information in the configuration of the first DMRS.

[0122] The advantages of the above method include: simplified signaling design and reduced overhead.

[0123] As an example, different fields in the first signaling indicate the port of the first DMRS and some or all of the information in the configuration of the first DMRS.

[0124] The advantages of the above methods include high flexibility.

[0125] As an example, the same field in the first signaling indicates some or all of the information in the configuration of the first data signal's MCS and the first DMRS.

[0126] The advantages of the above method include: simplified signaling design and reduced overhead.

[0127] As an example, different fields in the first signaling respectively indicate some or all of the information in the configuration of the first data signal's MCS and the first DMRS.

[0128] The advantages of the above methods include high flexibility.

[0129] As one embodiment, the first signaling is transmitted over a physical layer channel or the first signaling includes DCI; wherein,

[0130] The RNTI (Radio network temporary identifier) ​​of the first signaling indicates some or all of the information in the configuration of the first DMRS;

[0131] or,

[0132] The RNTI of the first signaling indicates which of a plurality of DMRS configurations the first DMRS configuration is; the DMRS configuration includes one or more of the following: the location of the REs occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0133] In the above method, the RNTI of the first signaling is the RNTI used to scramble the CRC (Cyclic Redundancy Check) of the first signaling.

[0134] As an example, the first signaling indicates the overlap of REs occupied by the first DMRS and the first data signal, respectively; the overlap includes one or more of the following: whether they overlap, partially overlap or completely overlap, and the ratio of overlapping REs in the first set of REs.

[0135] In the above method, each MCS in the MCS set is an MCS candidate for the data signal, and the plurality of MCS sets respectively include MCS candidates for the data signals under the plurality of DMRS configurations.

[0136] In the above method, the multiple DMRS configurations are either specified in the standard, configured by RRC signaling, or reported by the first node.

[0137] In the above method, at least two of the multiple MCS sets are different or distinct from each other, and the multiple MCS sets are distinct from each other; the multiple MCS sets are specified in the standard, configured by RRC signaling, or reported by the first node.

[0138] In the above method, the correspondence between the multiple MCS sets and the multiple DMRS configurations is specified in the standard, configured by RRC signaling, or reported by the first node.

[0139] In the above method, any two DMRS configurations in the plurality of DMRS configurations are different in one or more of the following: the location of the RE occupied in a RE block, the time-domain density, the frequency-domain density, the overlap between the DMRS RE and the data RE, and the energy ratio.

[0140] In the above method, the multiple DMRS configurations are different from each other. Different DMRS configurations can adapt to different channel characteristics (such as time-varying characteristics, frequency selectivity, etc.), improving channel estimation accuracy and data transmission reliability. Under different DMRS configurations, the MCS candidates for data transmission can be different, improving data transmission reliability, increasing data transmission capacity, and offering high flexibility and strong adaptability.

[0141] Example 2

[0142] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in Figure 2.

[0143] Figure 2 illustrates network architecture 200. Network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or a 5G+ network architecture, or a 6G network architecture, or a network architecture adopted in future evolutions by 3GPP; network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System), or 6GS (6G System); network architecture 200 includes at least one of UE (User Equipment) 201, RAN (Radio Access Network) 202, core network 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. The network architecture 200 can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the network architecture 200 provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes node 203. The RAN may also include other nodes 204. Node 203 provides user and control plane protocol termination toward UE 201. Node 203 may be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmitter-receiver node), or some other suitable term. The core network 210 is a 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is a 6GC; node 203 provides UE 201 with an access point to the core network 210.Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. Node 203 is connected to the core network 210 via an S1 / NG interface. The core network 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that handles signaling between the UE 201 and the core network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. Internet services 230 include operator-compliant Internet protocol services, which may specifically include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0144] As an example, the first node includes the UE201.

[0145] As one embodiment, the second node includes the node 203.

[0146] As one embodiment, the second node includes the core network 210.

[0147] As one embodiment, the second node includes the node 203 and the core network 210.

[0148] The above methods facilitate the flexible deployment of AI models on network devices.

[0149] As an example, node 203 is a macrocell base station.

[0150] As an example, node 203 is a microcell base station.

[0151] As an example, node 203 is a PicoCell base station.

[0152] As an example, node 203 is a femtocell.

[0153] As an example, node 203 is a base station device that supports large latency differences.

[0154] As an example, node 203 is a flight platform device.

[0155] As one example, node 203 is a satellite device.

[0156] As an example, the wireless link between the UE201 and the node203 includes a cellular link.

[0157] As an example, the first node and the second node in this application are the UE201 and the node203, respectively.

[0158] As an example, node 203 supports AI (Artificial Intelligence) or machine learning.

[0159] As an example, node 203 supports channel estimation using AI or machine learning.

[0160] As an example, node 203 supports signal reception using AI or machine learning.

[0161] As an example, node 203 supports generating a trained model using training data or generating some parameters of the trained model using training data.

[0162] As an example, the first signaling is generated in node 203.

[0163] As an example, the target recipient of the first signaling includes the UE201.

[0164] As an example, the operation is sending, the execution is receiving, the first data signal and the first DMRS are generated in the UE201, and the target receiver of the first data signal and the first DMRS includes the node203.

[0165] As an example, the operation is receiving, the execution is sending, the first data signal and the first DMRS are generated in the node 203, and the target receiver of the first data signal and the first DMRS includes UE 201.

[0166] Example 3

[0167] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in Figure 3.

[0168] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and control plane according to this application, as shown in Figure 3. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. Figure 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (UE, gNB, or RSU in V2X) and a second communication node device (gNB, UE, or RSU in V2X), or between two UEs, using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. Layer 1 will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the first communication node device and the second communication node device, or between two UEs. Layer L2 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. It also provides security through encrypted data packets and supports cross-cell mobility between the second communication node devices and the first communication node device. The RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. It is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among the first communication node devices. Furthermore, the MAC sublayer 302 handles HARQ operations. In the control plane 300, the Radio Resource Control (RRC) sublayer 306 of Layer 3 (L3) is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second and first communication node devices. The user plane 350's radio protocol architecture includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture for the first and second communication node devices in the user plane 350 is largely the same as the corresponding layers and sublayers in the control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 Layer 355, RLC sublayer 353 in L2 Layer 355, and MAC sublayer 352 in L2 Layer 355. However, PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not illustrated, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.).

[0169] As an example, the wireless protocol architecture in Figure 3 is applicable to the first node.

[0170] As an example, the wireless protocol architecture in Figure 3 is applicable to the second node.

[0171] As an example, the higher layer mentioned in this application refers to the layer above the physical layer.

[0172] As an example, the first signaling is generated in the RRC sublayer 306.

[0173] As an example, the first signaling is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0174] As an example, the first signaling is generated in the PHY301 or the PHY351.

[0175] As an example, the first data signal and the first DMRS are generated in the PHY301 or the PHY351.

[0176] Example 4

[0177] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0178] The first communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0179] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0180] In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In DL (Downlink), the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operation, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for L1 layer (i.e., physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and constellation mapping based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, generating one or more parallel... The transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into an RF stream, which is then provided to a different antenna 420.

[0181] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any parallel stream destined for the second communication device 450. Symbols on each parallel stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted over the physical channel by the first communication device 410. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2 (L2). The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the DL (Layered Logic), the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover upper-layer packets from the core network. The upper-layer packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 (L3) for L3 processing. The controller / processor 459 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0182] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the first communication device 410 described in the DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communication device 410, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated parallel stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0183] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the receiving function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. The controller / processor 475 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover upper-layer data packets from the second communication device 450. The upper-layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0184] As one embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 means at least: receiving first signaling; operating a first data signal and a first DMRS in a first RE set; the operation being receiving or transmitting; wherein the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from a first MCS set; multiple MCS sets correspond to multiple DMRS configurations, the MCS set including multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of REs occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0185] As one embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first signaling; operating a first data signal and a first DMRS in a first RE set; the operation being either receiving or transmitting; wherein the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from a first MCS set; a plurality of MCS sets correspond to a plurality of DMRS configurations, the MCS set including a plurality of MCSs; the configuration of the first DMRS is one of the plurality of DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of REs occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0186] As one embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 means at least: transmitting a first signaling; executing a first data signal and a first DMRS in a first RE set; the execution being either transmitting or receiving; wherein the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from a first MCS set; multiple MCS sets correspond to multiple DMRS configurations, the MCS set including multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of REs occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0187] As one embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program that generates actions when executed by at least one processor, the actions including: sending a first signaling; executing a first data signal and a first DMRS in a first RE set; the execution being either sending or receiving; wherein the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from a first MCS set; a plurality of MCS sets correspond to a plurality of DMRS configurations, the MCS set including a plurality of MCSs; the configuration of the first DMRS is one of the plurality of DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of REs occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0188] As an example, the first node in this application includes the second communication device 450.

[0189] As an example, the second node in this application includes the first communication device 410.

[0190] As an example, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first signaling in this application; at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to transmit the first signaling in this application.

[0191] As an example, at least one of {the antenna 452, the transmitter 454, the transmitter processor 468, the multi-antenna transmitter processor 457, the controller / processor 459, the memory 460, and the data source 467} is used in this application to transmit a first data signal and a first DMRS in the first RE set; at least one of {the antenna 420, the receiver 418, the receiver processor 470, the multi-antenna receiver processor 472, the controller / processor 475, and the memory 476} is used in this application to receive a first data signal and a first DMRS in the first RE set.

[0192] As an example, at least one of {the antenna 452, the receiver 454, the receiver processor 456, the multi-antenna receiver processor 458, the controller / processor 459, the memory 460, and the data source 467} is used in this application to receive a first data signal and a first DMRS in the first RE set; at least one of {the antenna 420, the transmitter 418, the transmitter processor 416, the multi-antenna transmitter processor 471, the controller / processor 475, and the memory 476} is used in this application to transmit a first data signal and a first DMRS in the first RE set.

[0193] Examples 5A-5B

[0194] Examples 5A-5B illustrate flowcharts of the transmission between a first node and a second node according to an embodiment of this application, as shown in Figures 5A-5B respectively.

[0195] In Figure 5A, the second node N1 and the first node U1 are communication nodes transmitted via an air interface. The operation described in this application is sending, and the execution is receiving.

[0196] For the first node U1, the first signaling is received in step S511; and the first data signal and the first DMRS are sent in the first RE set in step S512.

[0197] For the second node N1, a first signaling is sent in step S521; and a first data signal and a first DMRS are received in the first RE set in step S522.

[0198] In Figure 5B, the second node N10 and the first node U10 are communication nodes transmitted via an air interface. The operation described in this application is receiving, and the execution is sending.

[0199] For the first node U10, the first signaling is received in step S5110; the first data signal and the first DMRS are received in the first RE set in step S5120.

[0200] For the second node N10, a first signaling is sent in step S5210; a first data signal and a first DMRS are sent in the first RE set in step S5220.

[0201] In embodiments 5A and 5B, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the REs occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0202] As an example, the first node U1 is the first node in this application.

[0203] As an example, the second node N1 is the second node in this application.

[0204] As one embodiment, the air interface between the second node N1 and the first node U1 includes a wireless interface between the base station equipment and the user equipment.

[0205] As one embodiment, the air interface between the second node N1 and the first node U1 includes a wireless interface between the relay node device and the user equipment.

[0206] As one embodiment, the air interface between the second node N1 and the first node U1 includes a wireless interface between user equipment and user equipment.

[0207] As one example, the second node N1 is the serving cell sustaining base station of the first node U1.

[0208] As an example, the first node U10 is the first node in this application.

[0209] As an example, the second node N10 is the second node in this application.

[0210] As one embodiment, the air interface between the second node N10 and the first node U10 includes a wireless interface between the base station equipment and the user equipment.

[0211] As one embodiment, the air interface between the second node N10 and the first node U10 includes a wireless interface between the relay node device and the user equipment.

[0212] As one embodiment, the air interface between the second node N10 and the first node U10 includes a wireless interface between user equipment and user equipment.

[0213] As one example, the second node N10 is the serving cell sustaining base station of the first node U10.

[0214] In the above method, the processing of at least one of the first data signal and the first DMRS by the receiver of the first data signal and the first DMRS is implementation-dependent, that is, determined by the hardware device vendor of the receiver of the first data signal and the first DMRS; several typical but non-limiting implementations are described below:

[0215] In one implementation, the receiver of the first data signal and the first DMRS estimates the channel matrix based on the first DMRS. Then, the receiver of the first data signal and the first DMRS demultiplexes the DMRS and the data, and demodulates and decodes the demultiplexed data signal to recover the first transport block carried therein.

[0216] The receiver of the first data signal and the first DMRS can estimate the channel matrix based on the first DMRS using traditional channel estimation algorithms (such as least square (LS), minimum mean-square error (MMSE), etc.) or AI-based algorithms. For example, the receiver of the first data signal and the first DMRS can input the signal on at least the RE occupied by the first DMRS and the DMRS sequence into an AI model, and the output of the AI ​​model can be used to obtain the estimated channel matrix.

[0217] The recovery of the first data signal and the data from the receiver of the first DMRS can be based on traditional (i.e., non-AI) algorithms, or it can be entirely based on AI, or partially based on AI, i.e., a combination of AI and non-AI.

[0218] The demultiplexed data signal and the estimated channel matrix are input into the AI ​​model, and the output of the AI ​​model is used to recover the first transport block carried on the first data signal.

[0219] The channel estimation and data recovery process described above can be iterated multiple times to improve the accuracy of channel estimation and data recovery.

[0220] The structure and parameters of the AI ​​model in the above embodiments are known to the receiver of the first data signal and the first DMRS. For example, they are obtained by downloading from a network device, or they are specified in a standard, or they are implementation-related to the receiver of the first data signal and the first DMRS (i.e., determined by the hardware device manufacturer of the receiver of the first data signal).

[0221] Typical AI model structures include Transformer structures, RNNs (Recurrent Neural Networks), CNNs (Convolutional Neural Networks), and hybrid models composed of multiple models.

[0222] As an example, the receiver of the first data signal and the first DMRS processes at least one of the first data signal and the first DMRS based on AI; the processing of at least one of the first data signal and the first DMRS by the receiver of the first data signal and the first DMRS includes at least one of channel estimation, demodulation, and decoding.

[0223] In the above method, the operation is sending, the execution is receiving, and the processing of at least one of the first data signal and the first DMRS is performed in the second node; or, the operation is receiving, the execution is sending, and the processing of at least one of the first data signal and the first DMRS is performed in the first node.

[0224] In the above method, the decoding is channel decoding, or the decoding is joint decoding of the source and the channel.

[0225] As an example, the channel estimation of the first data signal and the receiver of the first DMRS on the first DMRS can be based on AI.

[0226] As one embodiment, the receiver of the first data signal and the first DMRS recovers the first transport block carried by the first data signal based on AI; or, at least one of the demodulation and decoding of the first data signal by the receiver of the first data signal and the first DMRS is based on AI.

[0227] In the above method, the AI ​​includes ML (Machine Learning).

[0228] The AI-based processing described above is particularly suitable for DMRS configurations where DMRS REs and data REs partially or completely overlap. Compared to 5G DMRS, where REs and data REs are orthogonal, the fact that data and DMRS can share the same REs offers several significant advantages: such as increased available REs for data transmission, improved data transmission capacity, and enhanced transmission reliability. Furthermore, the use of AI improves the accuracy of channel estimation on DMRS and enhances the performance of data demodulation and decoding.

[0229] Examples 6A-6C

[0230] Examples 6A-6C illustrate schematic diagrams of multiple DMRS configurations according to one embodiment of this application, as shown in Figures 6A-6C respectively.

[0231] In this application, any two DMRS configurations may differ in one or more of the following aspects: the location of the REs occupied in a RE block, the time-domain density, the frequency-domain density, the overlap between the DMRS REs and the data REs, and the energy percentage.

[0232] In Embodiment 6A, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; the first DMRS configuration and the second DMRS configuration differ in one or more of the RE positions, time-domain density, and frequency-domain density occupied in a RE block. In Figure 6A, the RE positions occupied by the first DMRS configuration and the second DMRS configuration are not entirely the same.

[0233] In the above method, the position of the RE occupied by DMRS in an RE block is usually referred to as the DMRS pattern.

[0234] As one example, the RE block includes one or more RBs (Resource Blocks).

[0235] As one embodiment, the RE block consists of all REs on one or more RBs in a time unit; the time unit includes multiple symbols, a slot, or a subframe.

[0236] As an example, the temporal density of DMRS includes the number of symbols spaced between two temporally adjacent REs, or the number of symbols spaced between the two temporally furthest REs.

[0237] As an example, the temporal density of DMRS includes at least one of the following: the time interval between two adjacent DMRS symbols within a time unit, and the number of DMRS symbols; the time unit includes multiple symbols, a slot, or a subframe.

[0238] As an example, the frequency domain density of the DMRS includes at least one of the number of REs occupied by the same DMRS port in a RE and the number of RE blocks to which the REs occupied by the same DMRS port belong.

[0239] As an example, the frequency domain density of DMRS includes the number of subcarriers spaced between two adjacent REs in the frequency domain, or the number of RE blocks spaced between two adjacent RE blocks in the frequency domain.

[0240] As an example, the location of an RE occupied in an RE block includes the location of a subcarrier occupied in an RE block and the location of a symbol occupied in an RE block.

[0241] As an example, the order of the positions of all subcarriers in an RE block from smallest to largest is consistent with the order of frequency from low to high, or the order of frequency from high to low; the order of the positions of all symbols in an RE block from smallest to largest is consistent with the order of early to late; and the range of the positions of symbols in an RE block is a non-negative integer starting from 0, or a positive integer starting from 1.

[0242] In Example 6B, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0243] In the above method, the DMRS configuration includes the overlap between DMRS REs and data REs; the overlap between DMRS REs and data REs includes one or more of the following: whether they overlap, partially overlap, or fully overlap, and the ratio of overlapping REs in the first set of REs.

[0244] In Embodiment 6C, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, the DMRS REs and data REs partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration. In Figure 6C, the energy percentage of the DMRS on one RE in the first DMRS configuration is different from the energy percentage of the DMRS on one RE in the second DMRS configuration, wherein different colors represent different energy percentages.

[0245] In the above method, the DMRS configuration includes energy percentage.

[0246] In the above method, the energy percentage is equal to the energy of DMRS on one RE minus the total energy on the RE, and the total energy on the RE is equal to the total energy of the data signal and DMRS on the RE;

[0247] or,

[0248] The energy percentage is equal to the energy of the DMRS on one RE minus the energy of the data signal on the RE;

[0249] or,

[0250] The energy percentage is equal to the energy of the data signal on a RE minus the energy of the DMRS on the RE.

[0251] As an example, DMRS energy can be evenly distributed across the RE.

[0252] The advantages of the above methods include: simplified design and low implementation complexity.

[0253] As an example, in one of the multiple DMRS configurations, the energy percentage of the DMRS on different REs in a RE block can be different.

[0254] In the above method, DMRS energy can be non-uniformly distributed across the RE. The advantage is that it better adapts to the time-varying characteristics or frequency selectivity of the channel, improves channel estimation accuracy, enhances data transmission reliability, and increases transmission capacity.

[0255] Example 7

[0256] Example 7 illustrates a schematic diagram of multiple DMRS configurations according to one embodiment of this application; as shown in Figure 7.

[0257] In Example 7, in one of the plurality of DMRS configurations, the energy percentage of a DMRS on a RE depends on either the RE block to which the RE belongs or the position of the RE within the RE block.

[0258] As one example, the RE block includes one or more RBs (Resource Blocks).

[0259] As one embodiment, the RE block consists of all REs on one or more RBs in a time unit; the time unit includes multiple symbols, a slot, or a subframe.

[0260] In the above method, the energy percentage is equal to the energy of DMRS on one RE minus the total energy on the RE, and the total energy on the RE is equal to the total energy of the data signal and DMRS on the RE;

[0261] or,

[0262] The energy percentage is equal to the energy of the DMRS on one RE minus the energy of the data signal on the RE;

[0263] or,

[0264] The energy percentage is equal to the energy of the data signal on a RE minus the energy of the DMRS on the RE.

[0265] As one example, the energy percentage of the DMRS on a RE depends on the RE block to which the RE belongs, including: the energy percentage of the DMRS on REs at the same location in two RE blocks is different.

[0266] As an example, in the above method, the energy proportion of DMRS on REs in different RE blocks can be different. The advantage is that it better adapts to the frequency selectivity of the channel and improves the accuracy of channel estimation.

[0267] As one embodiment, the energy percentage of the DMRS on a RE depends on the RE block to which the RE belongs, including: the energy percentage of the DMRS is the same on each RE in the same RE block, and the energy percentage of the DMRS is different on two REs belonging to two different RE blocks.

[0268] As an example, in the above method, the energy allocation of DMRS is at the RE block level, meaning that different RE blocks can be allocated different amounts of energy, but all REs within the same RE block are allocated the same amount of energy. The advantages are that it better adapts to the frequency selectivity of the channel, improves channel estimation accuracy, simplifies the design, and reduces the overhead of energy allocation indication.

[0269] As an example, the energy percentage of the DMRS on a RE depends on the position of the RE in its RE block, including: the energy percentage of the DMRS on two REs in a RE block is different.

[0270] As an example, in the above method, the energy allocation of DMRS is performed at the RE level within a RE block. The advantage is that it adapts well to the time-varying characteristics or frequency selectivity of the channel, provides high channel estimation accuracy, improves data transmission reliability, and increases transmission capacity.

[0271] In the above method, DMRS energy can be non-uniformly distributed across the RE. The advantage is that it better adapts to the time-varying characteristics or frequency selectivity of the channel, improves channel estimation accuracy, enhances data transmission reliability, and increases transmission capacity.

[0272] As an example, the energy percentage of the DMRS on a RE depends on the position of the RE in its respective RE block, including: the energy percentage of the DMRS on two REs in a RE block is different, and the energy percentage of the DMRS on REs at the same position in two RE blocks is the same.

[0273] As an example, in the above method, the energy allocation of DMRS is at the RE level within a RE block, and the same RE energy allocation method is used between different RE blocks. The advantage is that it simplifies the design and saves the overhead of indicating the energy percentage.

[0274] Example 8

[0275] Example 8 illustrates a schematic diagram of a plurality of MCS sets according to an embodiment of the present application; as shown in Figure 8.

[0276] In Example 8, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets include a first MCS set and a second MCS set. The first MCS set corresponds to the first DMRS configuration, and the second MCS set corresponds to the second DMRS configuration. The first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0277] In the above method, an MCS includes a modulation order and a target code rate, and the spectral efficiency of an MCS is equal to the product of the modulation order and the target code rate. The minimum spectral efficiency of an MCS set is the minimum of the individual spectral efficiencies of all MCSs in the set, and the maximum spectral efficiency of an MCS set is the maximum of the individual spectral efficiencies of all MCSs in the set.

[0278] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0279] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the maximum spectral efficiency of the second MCS set is greater than the maximum spectral efficiency of the second MCS set.

[0280] In the above method, compared with the DMRS configuration where the DMRS REs and data REs are orthogonal, the DMRS configuration where the DMRS REs and data REs can overlap allows for the use of a more spectrally efficient MCS due to the increased number of REs that can be occupied by data.

[0281] In the above method, for DMRS configurations where DMRS REs and data REs can overlap, since the data is affected by interference from DMRS, the receiver can use AI to process at least one of the DMRS and data to improve the accuracy of channel estimation and improve the performance of data demodulation and decoding.

[0282] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the maximum spectral efficiency of the second MCS set is less than the maximum spectral efficiency of the second MCS set.

[0283] In the above method, compared with the DMRS configuration where the DMRS RE and the data RE are orthogonal, in the DMRS configuration where the DMRS RE and the data RE can overlap, since the data is affected by interference from the DMRS, a MCS with a smaller spectral efficiency can be used to improve transmission reliability.

[0284] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the minimum spectral efficiency of the second MCS set is greater than the minimum spectral efficiency of the second MCS set.

[0285] In the above method, compared with the DMRS configuration where the DMRS REs and data REs are orthogonal, the DMRS configuration where the DMRS REs and data REs can overlap allows for the use of a more spectrally efficient MCS due to the increased number of REs that can be occupied by data.

[0286] In the above method, for DMRS configurations where DMRS REs and data REs can overlap, since the data is affected by interference from DMRS, the receiver can use AI to process at least one of the DMRS and data to improve the accuracy of channel estimation and improve the performance of data demodulation and decoding.

[0287] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the minimum spectral efficiency of the second MCS set is less than the minimum spectral efficiency of the second MCS set.

[0288] In the above method, compared with the DMRS configuration where the DMRS RE and the data RE are orthogonal, in the DMRS configuration where the DMRS RE and the data RE can overlap, since the data is affected by interference from the DMRS, a MCS with a smaller spectral efficiency can be used to improve transmission reliability.

[0289] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration; the plurality of MCS sets include a first MCS set and a second MCS set, the first MCS set corresponding to the first DMRS configuration, and the second MCS set corresponding to the second DMRS configuration; the first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0290] As an example, the energy percentage in the DMRS configuration is standard, configurable, or indicated by the DMRS receiver to the DMRS sender.

[0291] In the above method, different DMRS configurations have different energy ratios, which are adapted to different channel characteristics (such as channel quality, interference level, time-varying characteristics, frequency selectivity), and can also be adapted to different receiving methods. The channel estimation accuracy is high, which improves the reliability of data transmission and increases the transmission capacity.

[0292] Example 9

[0293] Example 9 illustrates a schematic diagram of the size of a first transport block according to an embodiment of this application; as shown in Figure 9.

[0294] In embodiment 9, the first data signal carries a first transmission block, the size of which is one TBS in the first TBS set; multiple TBS sets correspond to the multiple DMRS configurations respectively, the TBS set includes multiple TBSs, the TBS is a positive integer, and the first TBS set is the TBS set corresponding to the configuration of the first DMRS.

[0295] In Figure 9, DMRS configuration #1 and DMRS configuration #2 correspond to TBS set #1 and TBS set #2, respectively. TBS set #1 includes n1 TBSs, and TBS set #2 includes n2 TBSs. TBS#(i,j) represents the j-th TBS in TBS set #i.

[0296] In 5G systems, different DMRS configurations typically correspond to the same TBS set (i.e., the TBS for data signals is determined from the same TBS table). However, in the method described above, the multiple DMRS configurations are distinct, and different DMRS configurations can adapt to different channel characteristics (such as time-varying characteristics, frequency selectivity, etc.), improving channel estimation accuracy and data transmission reliability. The multiple TBS sets each include TBSs under different DMRS configurations; that is, under different DMRS configurations, the range of TBSs for data transmission can come from different TBS sets, improving data transmission reliability, increasing data transmission capacity, and offering high flexibility and adaptability.

[0297] In the above method, the multiple TBS sets belong to multiple TBS tables specified in the standard, or are configured by RRC signaling, or are reported by the first node.

[0298] Example 10

[0299] Example 10 illustrates a schematic diagram of the size of a first transport block according to another embodiment of this application; as shown in Figure 10.

[0300] In embodiment 10, the first data signal carries a first transport block; wherein the first signaling is used to indicate a first overhead from a plurality of overheads, the size of the first transport block is the TBS under the first overhead; the TBS under the first overhead depends on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal.

[0301] In Figure 10, the first signaling is used to indicate the first expense from expense #1, expense #2, ..., expense #m.

[0302] The specific implementation of "TBS under the first overhead" in the above method is described in Example 14, and will not be repeated here.

[0303] Typically, under the first overhead, the number of REs allocated to the first data signal depends on the number of symbols occupied by the first RE set, the number of RBs occupied by the first RE set, and the first overhead.

[0304] The specific implementation of "the number of REs allocated to the first data signal under the first overhead" in the above method is described in Example 14, and will not be repeated here.

[0305] As an example, the multiple overheads are configured to a DMRS configuration that satisfies partial or complete overlap between DMRS REs and data REs.

[0306] As an example, the number of REs allocated to the first data signal under the first overhead is equal to the number of REs included in the first RE set minus the first overhead.

[0307] As an example, under the first overhead, the number of REs allocated to the first data signal in a RE block is equal to the number of REs included in a RE block of the first RE set minus the first overhead.

[0308] As one embodiment, the number of REs allocated to the first data signal is N. RE The first overhead is Or and sum.

[0309] In the above method, N RE , and For specific definitions, please refer to sections 5.1.3.2 or 6.1.4.2 of 3GPP TS38.214.

[0310] As an example, the number of REs allocated to the first data signal within a RE block is N'. RE ;

[0311] or, Where b is the first overhead;

[0312] The N sc It is the number of subcarriers in a RE block. N is the number of symbols occupied by the first RE set. DMRS It refers to the number of DMRS REs within a single RE block, or the number of DMRS REs orthogonal to the data REs within a single RE block.

[0313] Example 11

[0314] Example 11 illustrates a schematic diagram of the size of a first transport block according to another embodiment of this application; as shown in Figure 11.

[0315] In embodiment 11, the first data signal carries a first transport block; the first signaling is used to indicate the size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the first TBS group comprising a plurality of TBSs, the TBS being a positive integer; the first TBS group depends on the MCS of the first data signal.

[0316] In Figure 11, the first TBS group includes TBS#1, TBS#2, ..., TBS#m; the first signaling indicates TBS#2, and the size of the first transport block is TBS#2.

[0317] As one embodiment, the same field in the first signaling indicates the port of the first DMRS and the size of the first transport block. Benefits include: simplified signaling design and reduced overhead;

[0318] or,

[0319] The different fields in the first signaling indicate the port of the first DMRS and the size of the first transport block, respectively. Advantages include: high flexibility.

[0320] As one embodiment, the same field in the first signaling indicates the configuration of the first DMRS and the size of the first transport block. Benefits include: simplified signaling design and reduced overhead;

[0321] or,

[0322] The different fields in the first signaling indicate the configuration of the first DMRS and the size of the first transport block, respectively. Advantages include: high flexibility.

[0323] As an example, the first signaling is used to indicate the size of the first transport block from the first TBS group; the plurality of TBSs in the first TBS group correspond to the plurality of DMRS configurations respectively.

[0324] In the above method, the first TBS group is specified in the standard, configured by RRC signaling, or obtained by the first node through calculation and lookup in the TBS table.

[0325] Example 12

[0326] Example 12 illustrates a schematic diagram of the relationship between the first TBS group and the MCS of the first data signal according to an embodiment of this application; as shown in Figure 12.

[0327] In Embodiment 12, the MCS of the first data signal is one of a plurality of MCSs, the plurality of MCSs correspond to a plurality of TBS groups, the TBS group includes one or more TBSs, and the first TBS group is the TBS group corresponding to the MCS of the first data signal.

[0328] In Figure 12, MCS#1 and MCS#2 correspond to TBS group #1 and TBS group #2, respectively. TBS group #1 includes m1 TBS, TBS group #2 includes m2 TBS, and TBS#(i,j) represents the j-th TBS in TBS group #i.

[0329] In the above method, the correspondence between the plurality of TBS groups and the plurality of MCSs is specified in the standard, or configured by RRC signaling, or the plurality of TBS groups are obtained by the first node respectively by calculating and looking up at least one of the TBS tables based on the plurality of MCSs.

[0330] Example 13

[0331] Example 13 illustrates a schematic diagram of the relationship between the first TBS group and the MCS of the first data signal according to another embodiment of this application; as shown in Figure 13.

[0332] In embodiment 13, the first TBS group depends on a reference TBS and a first offset; the reference TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0333] As an example, each TBS in the first TBS group belongs to a first TBS range, and at least one of the minimum TBS and the maximum TBS in the first TBS range depends on the reference TBS and the first offset.

[0334] As an example, the first TBS range depends on the reference TBS and the first offset, and the first TBS group includes some or all of the TBSs in a set of TBSs that belong to the first TBS range.

[0335] As an example, each TBS in the first TBS group belongs to a first TBS range, the smallest TBS in the first TBS range depends on the reference TBS and the first offset, and the largest TBS in the first TBS range depends on the reference TBS and the second offset.

[0336] As an example, each TBS in the first TBS group belongs to a first TBS range, the maximum TBS in the first TBS range depends on the reference TBS and the first offset, and the minimum TBS in the first TBS range depends on the reference TBS and the second offset.

[0337] In the above method, the TBS set is either specified in a standard, configured by RRC signaling, or the TBS set corresponding to the configuration of the first DMRS.

[0338] As an example, the minimum TBS in the first TBS range depends on the reference TBS and the first offset, including: the minimum TBS in the first TBS range is equal to the reference TBS minus the first offset.

[0339] As an example, the minimum TBS in the first TBS range depends on the reference TBS and the first offset, including: the index of the minimum TBS in the first TBS range is equal to the index of the reference TBS minus the first offset.

[0340] As an example, the maximum TBS in the first TBS range depending on the reference TBS and the first offset includes: the maximum TBS in the first TBS range is equal to the sum of the reference TBS and the first offset.

[0341] As an example, the maximum TBS in the first TBS range depends on the reference TBS and the first offset, including: the index of the maximum TBS in the first TBS range is equal to the sum of the index of the reference TBS and the first offset.

[0342] As one embodiment, the minimum TBS in the first TBS range depending on the reference TBS and the first offset includes: the minimum TBS in the first TBS range is equal to the reference TBS minus the first offset; the maximum TBS in the first TBS range depending on the reference TBS and the second offset includes: the maximum TBS in the first TBS range is equal to the sum of the reference TBS and the second offset.

[0343] As one embodiment, the minimum TBS in the first TBS range depending on the reference TBS and the first offset includes: the index of the minimum TBS in the first TBS range is equal to the index of the reference TBS minus the first offset; the maximum TBS in the first TBS range depending on the reference TBS and the second offset includes: the index of the maximum TBS in the first TBS range is equal to the sum of the index of the reference TBS and the second offset.

[0344] As one embodiment, the maximum TBS in the first TBS range depending on the reference TBS and the first offset includes: the maximum TBS in the first TBS range is equal to the sum of the reference TBS and the first offset; the minimum TBS in the first TBS range depending on the reference TBS and the second offset includes: the minimum TBS in the first TBS range is equal to the reference TBS minus the second offset.

[0345] As one embodiment, the maximum TBS in the first TBS range depending on the reference TBS and the first offset includes: the index of the maximum TBS in the first TBS range is equal to the sum of the index of the reference TBS and the first offset; the minimum TBS in the first TBS range depending on the reference TBS and the second offset includes: the index of the minimum TBS in the first TBS range is equal to the index of the reference TBS minus the second offset.

[0346] In the above method, the first offset is either the offset of the TBS or the offset of the TBS index.

[0347] In the above method, the first offset is specified in the standard, configured by RRC signaling, or reported by the first node.

[0348] As an example, the reference TBS is determined from a set of TBSs; the set of TBSs is specified in a standard or configured by RRC signaling.

[0349] As an example, the reference TBS is determined from the set of TBS corresponding to the configuration of the first DMRS.

[0350] The determination of the "reference TBS" in the above method is described in Example 14 for specific implementation methods, and will not be repeated here.

[0351] Example 14

[0352] Example 14 illustrates a schematic diagram of TBS determination according to an embodiment of this application; as shown in Figure 14.

[0353] In Example 14, a given TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0354] As an example, the given TBS is the size of the first transport block.

[0355] As an example, the given TBS is the reference TBS.

[0356] As an example, the given TBS is the TBS under the first overhead.

[0357] As an example, given the TBS, the number of REs allocated to the first data signal and the MCS of the first data signal are considered; wherein, the number of REs allocated to the first data signal depends on the number of REs allocated to the first data signal in a RE block and the number of RE blocks occupied by the first RE set in the frequency domain, the number of REs allocated to the first data signal in a RE block depends on the number of symbols occupied by the first RE set, the number of RBs occupied by the first RE set, and the overhead; wherein, the number of REs allocated to the first data signal is N. RE The number of REs allocated to the first data signal in a RE block is N' RE The overhead is Or and sum.

[0358] In the above method, N RE , and For specific definitions, please refer to sections 5.1.3.2 or 6.1.4.2 of 3GPP TS38.214.

[0359] As an example, the method for determining the given TBS can be referred to sections 5.1.3.2 or 6.1.4.2 of 3GPP TS38.214.

[0360] As an example, the first value is the product of the number of REs allocated to the first data signal, the spectral efficiency of the MCS of the first data signal, and the number of layers of the first data signal; the given TBS is obtained based on the first value by at least one of calculation and table lookup.

[0361] As an example, the first value is the product of the number of REs allocated to the first data signal, the modulation order of the first data signal, the target code rate of the first data signal, and the number of layers of the first data signal; the given TBS is obtained based on the first value through at least one of calculation and table lookup.

[0362] As an example, the first value is N. info The number of REs allocated to the first data signal is N. RE The modulation order of the first data signal is Q. m The target code rate of the first data signal is R, and the number of layers of the first data signal is v.

[0363] In the above method, N info N RE For specific definitions, please refer to sections 5.1.3.2 or 6.1.4.2 of 3GPP TS38.214.

[0364] As an example, the size of the first bit block is equal to the integer closest to the second value among all integers in a TBS set that are not less than the second value; the second value is a function of the first value.

[0365] As an example, the second value is N′ info .

[0366] As an example, N′ info For specific definitions, please refer to section 5.1.3.2 or section 6.1.4.2 of 3GPP TS38.214.

[0367] As an example, the second value is Where c is the first value.

[0368] As an example, the second value is Where c is the first value.

[0369] Examples of some implementations of "the number of REs allocated to the first data signal" in the above method are as follows:

[0370] As an example, the number of REs allocated to the first data signal is equal to the number of REs included in the first RE set minus the overhead.

[0371] As an example, the number of REs allocated to the first data signal depends on the number of REs allocated to the first data signal in a RE block and the number of RE blocks occupied by the first RE set in the frequency domain.

[0372] As an example, the number of REs allocated to the first data signal is a function of the number of REs allocated to the first data signal in a RE block and the number of RE blocks occupied by the first RE set in the frequency domain.

[0373] As an example, the number of REs allocated to the first data signal is equal to the product of the number of REs allocated to the first data signal in a RE block and the number of RE blocks occupied by the first RE set in the frequency domain.

[0374] As one embodiment, the number of REs allocated to the first data signal is N. RE N RE =min(A, N') RE )·n; where N' RE is the number of REs allocated to the first data signal within a RE block, where A is a positive integer and n is the number of RE blocks occupied by the first RE set in the frequency domain.

[0375] As a sub-implementation of the above embodiment, A is 156.

[0376] As a sub-implementation of the above embodiments, A is standard or configurable.

[0377] Examples of some implementations of "the number of REs allocated to the first data signal in a RE block" in the above method are as follows:

[0378] As an example, the number of REs allocated to the first data signal in a RE block is equal to or less than the number of REs included in a RE block of the first RE set minus the overhead.

[0379] As an example, the number of REs allocated to the first data signal within a RE block is N'. RE ;

[0380] Where b is the overhead, and N sc It is the number of subcarriers in a RE block. It is the number of symbols occupied by the first RE set.

[0381] As an example, the number of REs allocated to the first data signal within a RE block is N'. RE ;

[0382] Where b is the overhead, and N sc It is the number of subcarriers in a RE block. N is the number of symbols occupied by the first RE set. DMRS It is the DMRS overhead without data within a RE block, the DMRS overhead without data including the number of REs of the first DMRS orthogonal to the data RE, and at least the number of REs of the first DMRS orthogonal to the data RE in the number of REs in the DMRS CDM group without data.

[0383] As an example, the number of REs allocated to the first data signal within a RE block is N'. RE ;

[0384] Where f(aN) DMRS )=aN DMRS or or

[0385] Where a is a positive real number, 0≤a≤1 or 0<a≤1;

[0386] b is a positive integer, and N is... sc It is the number of subcarriers in a RE block. N is the number of symbols occupied by the first RE set. DMRS It is the DMRS overhead within a RE block, the DMRS overhead including the number of REs in the first DMRS and the number of REs in the DMRS CDM group without data, at least the number of REs in the first DMRS.

[0387] As a sub-implementation of the above embodiments, the overhead described in this application is b, or f(aN) DMRS )+b.

[0388] As a sub-implementation of the above embodiments, 'a' is standard or configurable.

[0389] As a sub-example of the above embodiment, 'a' depends on the DMRS configuration. For a DMRS configuration where the data RE and DMRS RE are orthogonal, a = 1.

[0390] In the above method, the RE block occupies one RB in the frequency domain, and the number of RE blocks occupied by the first RE set in the frequency domain is equal to the number of RBs occupied by the first RE set; or, the RE block occupies multiple RBs in the frequency domain, and the number of RE blocks included in the first RE set in the frequency domain is equal to the number of RBs occupied by the first RE set divided by the number of RBs occupied by the RE block.

[0391] Example 15

[0392] Example 15 illustrates a structural block diagram of a processing apparatus in a first node according to an embodiment of this application; as shown in Figure 15. In Figure 15, the processing apparatus 1500 in the first node includes a first receiver 1501 and a first processor 1502.

[0393] As one example, the first node is a user equipment.

[0394] As an example, the first node is a relay node device.

[0395] As an example, the first receiver 1501 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, and data source 467.

[0396] As one embodiment, the first processor 1502 includes at least one of the following in embodiment 4: antenna 452, transmitter / receiver 454, transmission processor 468, multi-antenna transmission processor 457, reception processor 456, multi-antenna reception processor 458, controller / processor 459, memory 460, and data source 467.

[0397] The first receiver 1501 receives the first signaling;

[0398] The first processor 1502 operates on a first data signal and a first DMRS in a first RE set; the operation is to receive or transmit.

[0399] In embodiment 15, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0400] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0401] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, the DMRS REs and data REs partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration.

[0402] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets include a first MCS set and a second MCS set. The first MCS set corresponds to the first DMRS configuration, and the second MCS set corresponds to the second DMRS configuration. The first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0403] As an example, in one of the plurality of DMRS configurations, the energy percentage of a DMRS on a RE depends on either the RE block to which the RE belongs or the position of the RE within its respective RE block.

[0404] As one embodiment, the first data signal carries a first transport block, the size of which is one TBS in a first TBS set; multiple TBS sets correspond to the multiple DMRS configurations respectively, the TBS set includes multiple TBSs, the TBS is a positive integer, and the first TBS set is the TBS set corresponding to the configuration of the first DMRS.

[0405] As one embodiment, the first data signal carries a first transport block; wherein the first signaling is used to indicate a first overhead from a plurality of overheads, the size of the first transport block is the TBS under the first overhead; the TBS under the first overhead depends on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal.

[0406] As an example, the first data signal carries a first transport block; the first signaling is used to indicate the size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the first TBS group comprising a plurality of TBSs, the TBS being a positive integer; the first TBS group depends on the MCS of the first data signal.

[0407] As an example, the MCS of the first data signal is one of a plurality of MCSs, the plurality of MCSs respectively correspond to a plurality of TBS groups, the TBS group includes one or more TBSs, and the first TBS group is the TBS group corresponding to the MCS of the first data signal.

[0408] As one embodiment, the first TBS group depends on a reference TBS and a first offset; the reference TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0409] Example 16

[0410] Example 16 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of the present application; as shown in Figure 16. In Figure 16, the processing apparatus 1600 in the second node includes a second transmitter 1601 and a second processor 1602.

[0411] In one embodiment, the second node is a base station device.

[0412] In one embodiment, the second node is a user equipment.

[0413] As one embodiment, the second node is a relay node device.

[0414] As one embodiment, the second transmitter 1601 includes at least one of the following in embodiment 4: antenna 420, transmitter 418, transmission processor 416, multi-antenna transmission processor 471, controller / processor 475, and memory 476.

[0415] As one embodiment, the second processor 1602 includes at least one of the following in embodiment 4: antenna 420, transmitter / receiver 418, receiver processor 470, multi-antenna receiver processor 472, transmitter processor 416, multi-antenna transmitter processor 471, controller / processor 475, and memory 476.

[0416] The second transmitter 1601 sends the first signaling;

[0417] The second processor 1602 executes a first data signal and a first DMRS in the first RE set; the execution is either sending or receiving.

[0418] In embodiment 16, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from the first MCS set; multiple MCS sets correspond to multiple DMRS configurations, and the MCS set includes multiple MCSs; the configuration of the first DMRS is one of the multiple DMRS configurations, and the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the location of the RE occupied in an RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage.

[0419] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0420] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, the DMRS REs and data REs partially or completely overlap; the energy percentage in the second DMRS configuration is different from the energy percentage in the first DMRS configuration.

[0421] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets include a first MCS set and a second MCS set. The first MCS set corresponds to the first DMRS configuration, and the second MCS set corresponds to the second DMRS configuration. The first MCS set and the second MCS set satisfy at least one of different minimum spectral efficiency and different maximum spectral efficiency.

[0422] As an example, in one of the plurality of DMRS configurations, the energy percentage of a DMRS on a RE depends on either the RE block to which the RE belongs or the position of the RE within its respective RE block.

[0423] As one embodiment, the first data signal carries a first transport block, the size of which is one TBS in a first TBS set; multiple TBS sets correspond to the multiple DMRS configurations respectively, the TBS set includes multiple TBSs, the TBS is a positive integer, and the first TBS set is the TBS set corresponding to the configuration of the first DMRS.

[0424] As one embodiment, the first data signal carries a first transport block; wherein the first signaling is used to indicate a first overhead from a plurality of overheads, the size of the first transport block is the TBS under the first overhead; the TBS under the first overhead depends on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal.

[0425] As an example, the first data signal carries a first transport block; the first signaling is used to indicate the size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the first TBS group comprising a plurality of TBSs, the TBS being a positive integer; the first TBS group depends on the MCS of the first data signal.

[0426] As an example, the MCS of the first data signal is one of a plurality of MCSs, the plurality of MCSs respectively correspond to a plurality of TBS groups, the TBS group includes one or more TBSs, and the first TBS group is the TBS group corresponding to the MCS of the first data signal.

[0427] As one embodiment, the first TBS group depends on a reference TBS and a first offset; the reference TBS depends on the number of REs allocated to the first data signal and the MCS of the first data signal; wherein the number of REs allocated to the first data signal depends on at least the number of symbols occupied by the first RE set and the number of RBs occupied by the first RE set.

[0428] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, vehicles, RSUs, wireless sensors, internet access cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet access cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, and other wireless communication devices. The base stations or system equipment in this application include, but are not limited to, macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNBs, gNBs, TRPs (Transmitter Receiver Points), GNSS, relay satellites, satellite base stations, airborne base stations, RSUs (Road Side Units), drones, and testing equipment, such as transceivers or signaling testers that simulate some functions of a base station, and other wireless communication equipment.

[0429] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node configured for wireless communication, the first node comprising: Comprising: a first receiver, receiving a first signaling; a first processor, operating a first data signal and a first DMRS in a first RE set; the operation is receiving or transmitting; wherein the first signaling indicates the first RE set; the first signaling is used to indicate a MCS of the first data signal from a first MCS set; a plurality of MCS sets respectively correspond to a plurality of DMRS configurations, the MCS set includes a plurality of MCSs; the configuration of the first DMRS is one of the plurality of DMRS configurations, the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration includes one or more of the following: the position of the RE occupied in a RE block, the time domain density, the frequency domain density, the overlap between DMRS RE and data RE, the energy proportion.

2. The first node of claim 1, characterized in that, The plurality of DMRS configurations includes a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration, the DMRS RE and the data RE are orthogonal; in the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

3. The first node of claim 1, wherein, The plurality of DMRS configurations includes a first DMRS configuration and a second DMRS configuration; in the first DMRS configuration and the second DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the energy proportion in the second DMRS configuration is different from the energy proportion in the first DMRS configuration.

4. The first node of any of claims 1 to 3, wherein, The plurality of DMRS configurations includes a first DMRS configuration and a second DMRS configuration, and the plurality of MCS sets includes a first MCS set and a second MCS set, the first MCS set corresponds to the first DMRS configuration, and the second MCS set corresponds to the second DMRS configuration; the first MCS set and the second MCS set satisfy at least one of the following: different minimum spectral efficiency and different maximum spectral efficiency.

5. The first node of any of claims 1 to 4, wherein, In one of the plurality of DMRS configurations, the energy proportion of the DMRS on one RE depends on one of the following: the RE block to which the one RE belongs or the position of the one RE in the RE block to which the one RE belongs.

6. The first node of any of claims 1 to 5, wherein, The first data signal carries a first transport block, and the size of the first transport block is one TBS in a first TBS set; a plurality of TBS sets respectively correspond to the plurality of DMRS configurations, and the TBS set includes a plurality of TBSs, the TBS being a positive integer, and the first TBS set being the TBS set corresponding to the configuration of the first DMRS.

7. The first node of any of claims 1 to 5, wherein, The first data signal carries a first transport block; wherein, the first signaling is used to indicate a first overhead from a plurality of overheads, and the size of the first transport block is a TBS under the first overhead; the TBS under the first overhead depends on the number of REs allocated to the first data signal under the first overhead and the MCS of the first data signal; or, The first signaling is used to indicate a size of the first transport block from a first TBS group, the size of the first transport block being one TBS in the first TBS group, the TBS being a positive integer; the first TBS group depending on the MCS of the first data signal.

8. A second node configured for wireless communication, the second node comprising: Comprise: A second transmitter, transmitting first signaling; A second processor, performing a first data signal and a first DMRS in a first RE set; The performance is transmitting or receiving; Wherein, the first signaling indicates the first RE set; the first signaling is used to indicate the MCS of the first data signal from a first MCS set; a plurality of MCS sets respectively correspond to a plurality of DMRS configurations, the MCS set comprising a plurality of MCSs; the configuration of the first DMRS being one of the plurality of DMRS configurations, the first MCS set being the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration comprising one or more of the following: the position of the RE occupied in one RE block, the time domain density, the frequency domain density, the overlap between the DMRS RE and the data RE, the energy proportion.

9. A method in a first node used for wireless communication, characterized by, Comprise: Receiving first signaling; Operating a first data signal and a first DMRS in a first RE set; The operation is receiving or transmitting; Wherein, the first signaling indicates the first RE set; the first signaling is used to instruct the MCS of the first data signal from a first MCS set; a plurality of MCS sets respectively corresponding to a plurality of DMRS configurations, the MCS set comprising a plurality of MCSs; the first DMRS configuration is one of the plurality of DMRS configurations, the first MCS set is the MCS set corresponding to the configuration of the first DMRS; the DMRS configuration comprises one or more of the following: the position of the RE occupied in one RE block, the density of time domain, the density of frequency domain, the overlap between the DMRS RE and the data RE, the energy proportion.

10. A method in a second node used for wireless communication, characterized by, Comprise Transmit first signaling; Perform a first data signal and a first DMRS in a first RE set; The performance is transmitting and receiving; Wherein, the first signaling indicates the first RE set; the first signaling is used for indicating the MCS of the first data signal from a first MCS set; a plurality of MCS sets respectively corresponds to a plurality of DMRS configurations, the MCS set comprising a plurality of MCSs; the DMRS configuration of the first DMRS is one of the plurality of DMRS configurations, the first MCS set is the MCS set corresponding the configuration of the first DMRS; the DMRS configuration comprises one or more of the following, the position of the RE occupied in one RE block, the time domain density, the frequency domain, the overlap between the DMRS RE and the data RE, the energy proportion.

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