Method and apparatus for reporting channel information of node for wireless communication

Abstract

The present application discloses a method and apparatus for reporting channel information of a node for wireless communication. A first node receives a first RRC information block, the first RRC information block indicating a first RS resource set; receives a second information block, the second information block being used for indicating a first DMRS configuration among a plurality of DMRS configurations; and sends at least a first CQI. The DMRS configuration comprises one or more of the position of an RE occupied in one RE block, a time-domain density, a frequency-domain density, an overlap condition between a DMRS RE and a data RE, and an energy allocation ratio. The first CQI is used for indicating a first transmission scheme from a first transmission scheme set, and the first transmission scheme is obtained on the basis of at least channel measurement and interference measurement on the first RS resource set. The first transmission scheme satisfies the following: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received at a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

Description

A method and apparatus for reporting channel information of nodes in 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 channel information reporting in wireless communication systems. Background Technology

[0002] In current 5G wireless communication systems, the DMRS (Demodulation Reference Signal) is used to estimate the channel of the PDSCH (Physical Downlink 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 RE 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 obtained by looking up the TBS (Transport Block Size) table based on the number of allocated symbols, the number of allocated RBs (Resource Blocks), the overhead of the MCS (Modulation and Coding Scheme) and DMRS, etc.

[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.

[0004] In 5G systems, the UE (User Equipment) measures the channel on reference signal resources used for channel measurement and the interference on reference signal resources used for interference measurement. It then calculates and reports CSI (Channel State Information), which includes, but is not limited to, one or more of CRI (Channel State Information-Reference Signal Resource Indicator), RI (Rank Indicator), PMI (Precoding Matrix Indicator), and CQI (Channel Quality Indicator). The reported CQI is the one with the largest CQI index that meets a certain transport block error probability requirement. The CQI indicates a transmission scheme; different CQI indices correspond to different transmission schemes. The transmission scheme includes modulation and code rate, and its efficiency is equal to the product of the modulation order and the code rate. In 5G systems, the ascending order of CQI indices corresponds to the ascending order of efficiency. Typically, the modulation order refers to the number of bits carried by a modulation symbol. For example, the modulation order of BPSK (Binary Phase Shift Keying) is 1, that of QPSK (Quadrature Phase Shift Keying) is 2, that of 16QAM (16 Quadrature Amplitude Modulation) is 4, and that of 64QAM (64 Quadrature Amplitude Modulation) is 6. Summary of the Invention

[0005] The applicant's research revealed that in the future technological evolution of 5G and 6G, multiple DMRS configurations can adapt to various transmission environments, which is beneficial for improving channel estimation accuracy, enhancing data transmission reliability, and better balancing DMRS overhead and data transmission efficiency. Therefore, how to determine and report channel information under multiple DMRS configurations is a key issue that needs to be addressed.

[0006] 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.

[0007] 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).

[0008] This application discloses a method used in a first node of wireless communication, characterized by comprising:

[0009] Receive a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement;

[0010] Receive a second information block, which is used to indicate a first DMRS configuration from multiple DMRS configurations;

[0011] Send at least the first CQI;

[0012] The DMRS configuration includes one or more of the following: the location of REs occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0013] As an example, the problem this application aims to solve includes: how to determine and report channel information, including CQI, under multiple DMRS configurations.

[0014] As an example, in the above method, the transmission scheme indicated by the CQI is conditional on the indicated DMRS configuration. The advantages include: different DMRS configurations can apply different modulation and code rates, optimizing the CQI determination method and providing high flexibility and adaptability.

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

[0016] As an example, the first node is a relay node.

[0017] As one example, the first node is a terminal.

[0018] As one example, the terminal is a user equipment.

[0019] According to one aspect of this application, the first transmission scheme is the one with the largest CQI index or the highest efficiency among M transmission schemes, wherein the M transmission schemes belong to the first transmission scheme set, and M is a positive integer greater than 1; any one of the M transmission schemes satisfies the following condition: under the condition of using the first DMRS configuration, the bit block using the transmission scheme is received at a block error rate not exceeding the first threshold.

[0020] As an example, in a 5G system, the reported CQI is the one with the largest CQI index that meets the criteria, where the order of CQI indexes from smallest to largest corresponds to the order of efficiency from smallest to largest. The above method is similar to that of the 5G system, has good compatibility with existing standards, requires minimal standardization modifications, and is simple to implement.

[0021] According to one aspect of this application, a plurality of transmission scheme sets correspond to the plurality of DMRS configurations, the transmission scheme sets including a plurality of the transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration.

[0022] As an example, in the above method, the candidate transmission schemes corresponding to the reported CQI (i.e., the first set of transmission schemes) depend on the indicated DMRS configuration. Advantages include: the candidate transmission schemes applicable to data signals can differ under different DMRS configurations; the candidate transmission schemes are optimized, offering high flexibility and adaptability. Furthermore, compared to schemes that share a larger set of transmission schemes across different DMRS configurations, the above method reduces CQI overhead.

[0023] According to one aspect of this application, the bit block size of the first transmission scheme under the condition of employing the first DMRS configuration is a bit block size in a first set of bit block sizes; wherein each of the plurality of DMRS configurations corresponds to a set of bit block sizes, at least two of the plurality of DMRS configurations correspond to different sets of bit block sizes, the set of bit block sizes includes a plurality of bit block sizes, the bit block size is a positive integer, and the first set of bit block sizes is the set of bit block sizes corresponding to the first DMRS configuration.

[0024] As an example, the advantages of the above method include: different DMRS configurations can adapt to different channel environments; the candidate bit block size can be different under different DMRS configurations, the candidate bit block size is optimized, the data transmission reliability is improved, the data transmission capacity is increased, and the flexibility and adaptability are high.

[0025] According to one aspect of this application, the first RRC information block includes the reporting configuration of the at least first CQI, and the first RRC information block includes some or all fields in one or more RRC IEs; the second information block includes MAC CE or DCI (Downlink Control Information).

[0026] As an example, the advantages of the above method include: compared with RRC signaling, DMRS configuration indication is more dynamic and flexible, and can adapt well to changes in the channel environment.

[0027] According to one aspect of this application, the two information blocks respectively indicate two DMRS configurations, wherein the first DMRS configuration is the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block is the latest information block of the two information blocks.

[0028] As an example, the advantages of the above method include: the indication of DMRS configuration can adapt well to changes in the channel environment.

[0029] According to one aspect of this application, it is characterized by comprising:

[0030] Receive the first data signal and the DMRS of the first data signal;

[0031] Wherein, the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

[0032] As an example, the advantages of the above method include: the indication signaling configured by DMRS can schedule data signals, saving signaling overhead.

[0033] According to one aspect of this application, the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0034] As an example, the advantages of the above method include: indicating the applicable DMRS configuration in the channel information reporting configuration, saving additional signaling overhead; in addition, the DMRS configuration is indicated per (per) reporting configuration, that is, different reporting configurations can indicate different DMRS configurations, which is highly flexible.

[0035] 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.

[0036] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; and in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0037] As an example, in the above method, one DMRS configuration is compatible with the orthogonal DMRS design in current 5G systems (i.e., DMRS REs and data REs are orthogonal). In another DMRS configuration, the data signal and DMRS can occupy the same REs, increasing the number of REs that can be occupied by the data signal and improving data transmission efficiency.

[0038] 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.

[0039] 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.

[0040] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, wherein the first transmission scheme set corresponds to the first DMRS configuration and the second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of minimum efficiency difference and maximum efficiency difference.

[0041] As an example, in the above method, the transmission scheme sets corresponding to different DMRS configurations each have at least one of a minimum efficiency and a maximum efficiency. The advantage is that different minimum / maximum efficiencies better adapt to different channel environments, maximizing data transmission reliability and capacity while ensuring channel estimation accuracy.

[0042] 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.

[0043] 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.

[0044] This application discloses a method used in a second node for wireless communication, characterized by comprising:

[0045] Send a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement;

[0046] Send a second information block, which is used to indicate the first DMRS configuration from multiple DMRS configurations;

[0047] Receive at least the first CQI;

[0048] 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, the bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0049] In one embodiment, the second node is a base station.

[0050] As one embodiment, the second node includes a base station.

[0051] As one embodiment, the second node includes the core network.

[0052] As one embodiment, the second node includes a base station and a core network.

[0053] As one embodiment, the second node is a network device, which includes at least one of a core network device and an access network device.

[0054] As one example, the second node is a device that provides wireless communication services and can communicate with terminal devices, and is usually located on the network side.

[0055] In one embodiment, the second node is a user equipment.

[0056] As one example, the second node is a relay node.

[0057] According to one aspect of this application, the first transmission scheme is the one with the largest CQI index or the highest efficiency among M transmission schemes, wherein the M transmission schemes belong to the first transmission scheme set, and M is a positive integer greater than 1; any one of the M transmission schemes satisfies the following condition: under the condition of using the first DMRS configuration, the bit block using the transmission scheme is received at a block error rate not exceeding the first threshold.

[0058] According to one aspect of this application, a plurality of transmission scheme sets correspond to the plurality of DMRS configurations, the transmission scheme sets including a plurality of the transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration.

[0059] According to one aspect of this application, the bit block size of the first transmission scheme under the condition of employing the first DMRS configuration is a bit block size in a first set of bit block sizes; wherein each of the plurality of DMRS configurations corresponds to a set of bit block sizes, at least two of the plurality of DMRS configurations correspond to different sets of bit block sizes, the set of bit block sizes includes a plurality of bit block sizes, the bit block size is a positive integer, and the first set of bit block sizes is the set of bit block sizes corresponding to the first DMRS configuration.

[0060] According to one aspect of this application, the first RRC information block includes the reporting configuration of the at least first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0061] According to one aspect of this application, the two information blocks respectively indicate two DMRS configurations, wherein the first DMRS configuration is the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block is the latest information block of the two information blocks.

[0062] According to one aspect of this application, it is characterized by comprising:

[0063] Send the first data signal and the DMRS of the first data signal;

[0064] Wherein, the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

[0065] According to one aspect of this application, the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0066] 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.

[0067] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; and in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0068] 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.

[0069] According to one aspect of this application, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, wherein the first transmission scheme set corresponds to the first DMRS configuration and the second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of minimum efficiency difference and maximum efficiency difference.

[0070] 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.

[0071] This application discloses a first node used for wireless communication, characterized in that it comprises:

[0072] A first receiver receives a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; and receives a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations.

[0073] The first transmitter sends at least the first CQI;

[0074] The DMRS configuration includes one or more of the following: the location of REs occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0075] This application discloses a second node used for wireless communication, characterized in that it includes:

[0076] The second transmitter transmits a first RRC information block, which indicates a first RS resource set used for channel measurement and interference measurement; and transmits a second information block, which is used to indicate the first DMRS configuration from a plurality of DMRS configurations.

[0077] The second receiver receives at least the first CQI;

[0078] 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, the bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0079] As an example, compared with conventional solutions, this application has the following advantages:

[0080] - Different DMRS configurations can be used with different modulation and code rates, and the method for determining CQI has been optimized;

[0081] - Reduced CQI indication overhead;

[0082] - Adapted to different channel environments;

[0083] - Better balance between channel estimation accuracy and data transmission efficiency;

[0084] - Improved data transmission reliability;

[0085] -Increased data transmission capacity;

[0086] - Highly flexible and adaptable;

[0087] - Good standard compatibility, minimal standardization modifications, and simple implementation;

[0088] - It can support AI / ML-based wireless channel processing, including demodulation, decoding, channel estimation and other technologies. Attached Figure Description

[0089] 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:

[0090] Figure 1 illustrates a flowchart of a first RRC information block, a second information block, and at least a first CQI according to an embodiment of this application;

[0091] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of this application;

[0092] 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;

[0093] Figure 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of this application;

[0094] Figure 5 illustrates the transmission between a first node and a second node according to an embodiment of this application;

[0095] Figures 6A-6D respectively illustrate schematic diagrams of multiple DMRS configurations according to an embodiment of this application;

[0096] Figure 7 illustrates a schematic diagram of multiple DMRS configurations according to another embodiment of this application;

[0097] Figures 8A-8C respectively illustrate a set of transmission schemes according to an embodiment of this application;

[0098] Figure 9 shows a schematic diagram of M transmission schemes according to an embodiment of this application;

[0099] Figures 10A-10B respectively illustrate schematic diagrams of a set of bit block sizes according to an embodiment of this application;

[0100] Figure 11 shows a schematic diagram of a second information block according to an embodiment of this application;

[0101] Figures 12A-12B respectively show schematic diagrams of a second information block according to another embodiment of this application;

[0102] Figures 13A-13B respectively show schematic diagrams of a second information block according to another embodiment of this application;

[0103] Figure 14 shows a schematic diagram of the size of a bit block using a given transmission scheme according to an embodiment of this application;

[0104] Figure 15 shows a structural block diagram of a processing apparatus for a first node according to an embodiment of the present application;

[0105] 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

[0106] 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 5-16, the embodiments in Figure 5 and the embodiments in Figures 6-16, etc.

[0107] Example 1

[0108] Example 1 illustrates a flowchart of a first RRC information block, a second information block, and at least a first CQI according to an embodiment of this application, as shown in Figure 1. In Figure 1, each block represents a step.

[0109] In Embodiment 1, the first node receives a first RRC information block in step 101; receives a second information block in step 102; and transmits at least a first CQI in step 103. The first RRC information block indicates a first RS resource set, which is used for channel measurement and interference measurement. The second information block is used to indicate a first DMRS configuration from multiple DMRS configurations. 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. The first CQI is used to indicate a first transmission scheme from a first transmission scheme set, which includes multiple transmission schemes, each including modulation and code rate. The first transmission scheme is obtained at least based on the channel measurement and interference measurement on the first RS resource set. The first transmission scheme satisfies the following condition: under the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, where the first threshold is a positive real number greater than 0 and less than 1.

[0110] As one embodiment, the second information block includes some or all of the fields in one or more RRC IEs.

[0111] As one example, the second information block includes MAC CE or DCI.

[0112] 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.

[0113] In the above method, the multiple DMRS configurations are different from each other. Different DMRS configurations can be adapted to different channel characteristics (such as time-varying characteristics, frequency selectivity, etc.), which improves the channel estimation accuracy and the data transmission reliability.

[0114] As an example, the first RRC information block includes some or all of the fields in one or more RRC IEs (Information Elements).

[0115] As an example, the first RRC information block includes an RRC IE.

[0116] As an example, the reporting configuration of at least the first CQI includes the first RRC information block.

[0117] As one embodiment, the first RRC information block includes some or all of the domains in the reporting configuration of at least the first CQI.

[0118] As an example, the reporting of at least the first CQI is periodic.

[0119] As an example, the reporting of at least the first CQI is activated by MAC CE.

[0120] As an example, the at least first CQI is triggered by physical layer signaling, or the at least first CQI is triggered by DCI.

[0121] As an example, the at least first CQI includes CSI (Channel State Information).

[0122] As an example, the at least first CQI is the first CQI.

[0123] As an example, the at least first CQI includes a plurality of CQIs, and the first CQI is one of the plurality of CQIs.

[0124] As an example, the at least first CQI includes the first CQI and the second CQI; the first CQI is conditional on the first DMRS configuration, and the second CQI is conditional on a DMRS configuration that is different from the first DMRS configuration among the plurality of DMRS configurations.

[0125] As an example, the at least first CQI includes the first CQI, and at least one of RS (reference signal) resource indicator, rank indicator (RI), precoding matrix indicator (PMI), and channel eigen vector.

[0126] As one embodiment, the first RS resource set includes one or more RS resources.

[0127] As one embodiment, the first RS resource set includes RS resources for channel measurement and RS resources for interference measurement.

[0128] As an example, the RS resource used for channel measurement is a CSI-RS (Channel State Information-Reference Signal) resource or a synchronization signal resource.

[0129] As an example, the RS resources used for channel measurement are CSI-RS resources or SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block resources.

[0130] As an example, the RS resource used for interference measurement is a CSI-IM (Channel State Information-Interference Measurement) resource.

[0131] As an example, the RS resource used for interference measurement is a CSI-IM resource or an NZP (Non-Zero Power) CSI-RS resource used for interference measurement.

[0132] As an example, the first transmission scheme is calculated based at least on the channel measurements and the interference measurements on the first RS resource set.

[0133] As an example, the first transmission scheme is obtained by looking up a table, based at least on the channel measurements and interference measurements on the first RS resource set.

[0134] As an example, the first transmission scheme is obtained by mapping based at least on the channel measurements and the interference measurements on the first RS resource set.

[0135] As an example, the first transmission scheme is obtained by looking up the relationship curve between SINR (Signal-to-Interference-plus-Noise Ratio) and block error rate, based at least on the channel measurement and the interference measurement on the first RS resource set.

[0136] As an example, the first transmission scheme is obtained through inference, at least based on the channel measurements and interference measurements on the first RS resource set.

[0137] As an example, how the first transmission scheme is obtained, at least based on the channel measurements and interference measurements on the first RS resource set, is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0138] The first node obtains a SINR value based on the channel measurement and the interference measurement on the first RS resource set, and the first transmission scheme is obtained at least based on the SINR value. The first transmission scheme satisfies the following condition: on the relationship curve between SINR and block error rate of the transmission scheme, the block error rate to which the SINR value is mapped does not exceed a first threshold.

[0139] If there are M transmission schemes that satisfy the following: the block error rate mapped to the relationship curve between SINR and block error rate of any of the M transmission schemes does not exceed the first threshold, where M is a positive integer greater than 1; and the first transmission scheme is the transmission scheme with the largest CQI index or the highest efficiency among the M transmission schemes.

[0140] In the above embodiments, how to obtain the SINR value based on the channel measurement and the interference measurement on the first RS resource set is determined by the manufacturer of the first node, or is implementation-dependent. Several typical but non-limiting embodiments are described below:

[0141] As an example, the SINR value is calculated based on the channel measurement and the interference measurement on the first RS resource set.

[0142] As an example, the SINR value is obtained by reasoning based on the channel measurement and the interference measurement on the first RS resource set.

[0143] In the above embodiments, the relationship curve between SINR and block error rate of a transmission scheme can be determined by the manufacturer of the first node, or it can be described as implementation-related. Several typical but non-limiting implementations are described below:

[0144] The first node obtains the block error rate corresponding to different SINR values ​​under the same transmission scheme through link-level simulation, and then plots the relationship curve between SINR and block error rate of the transmission scheme.

[0145] In the above embodiments, how can we infer, based on the channel measurements and interference measurements on the first RS resource set, that the first transmission scheme is determined by the manufacturer of the first node, or that it is implementation-related? A typical but non-limiting implementation is described below:

[0146] The inputs to the inference include the channel measurements and the interference measurements on the first RS resource set, and the output of the inference is the first transmission scheme.

[0147] In the above implementation, the structure and parameters of the AI ​​model used for inference are known to the first node. For example, they may be obtained by downloading from a network device, or they may be specified in a standard, or they may be implementation-related to the first node (i.e., determined by the hardware vendor of the first node).

[0148] Typical AI model structures include Transformer architecture, RNN (Recurrent Neural Network), CNN (Conventional Neural Networks), and hybrid models composed of multiple models.

[0149] The following are several specific implementations of the bit block in "bit block using the first transmission scheme":

[0150] As an example, the bit block comprises multiple bits, and the block error rate is BLER (Block Error Rate).

[0151] As an example, the bit block comprises multiple bits, and the block error rate is the probability of a bit block error.

[0152] As an example, the bit block is a transport block, and the block error rate is the transport block error probability.

[0153] As an example, the first threshold is 0.1 or 0.00001.

[0154] In the above method, the first threshold is compatible with the transport block error probabilities of 0.1 and 0.00001 in the 5G system, and has good standard compatibility.

[0155] As an example, the first threshold is different from 0.1 and 0.00001.

[0156] As an example, the bit block is a physical channel bit block, which includes multiple bits.

[0157] As an example, the bit block is a physical downlink channel bit block, and the bit block includes multiple bits.

[0158] As an example, the bit block is a data channel bit block, and the bit block includes multiple bits.

[0159] As one example, the bit block includes a transport block.

[0160] As an example, the bit block includes a PDSCH (Physical Downlink Shared Channel) transport block.

[0161] As an example, the bit block includes a PDSCH bit block, and the bit block includes multiple bits.

[0162] As an example, the bit block occupies CSI reference resources.

[0163] As an example, the bit block is a PDSCH transport block that occupies a CSI reference resource.

[0164] As an example, the definition of the CSI reference resource may be consistent with or similar to "a single PDSCH transport block" in the CQI definition in 3GPP TS 38.214, and will not be repeated here.

[0165] As an example, the bit block can be consistent with or similar to "a single PDSCH transport block" in the CQI definition in 3GPP TS 38.214, i.e., the bit block is hypothetical (i.e., not actually generated and transmitted), and has good compatibility with existing CQI definitions. Several typical but non-limiting implementations are described below:

[0166] As an example, the bit block is a bit block assumed by the first node, and the bit block includes multiple bits.

[0167] As an example, the bit block is the transport block assumed by the first node.

[0168] As an example, the bit block is a single PDSCH transport block in the existing CQI definition.

[0169] As an example, the bit block was not actually generated.

[0170] As an example, the bit block was not actually generated and was not transmitted over the air interface.

[0171] As an example, for a transmission scheme, determining whether "a block of bits using the transmission scheme is received with a block error rate not exceeding a first threshold" is determined by the manufacturer of the first node, or is implementation-related. A typical but non-limiting implementation is described below:

[0172] The first node obtains the SINR value based on the channel measurement and the interference measurement on the first RS resource set. It determines whether "a block of bits using the transmission scheme is received at a block error rate not exceeding the first threshold" based on whether the block error rate mapped to the SINR value on the "SINR-block error rate relationship curve" of the transmission scheme exceeds the first threshold. It is determined that "a block of bits using the transmission scheme is received at a block error rate not exceeding the first threshold" only if the mapped block error rate does not exceed the first threshold.

[0173] Example 2

[0174] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in Figure 2.

[0175] 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 Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0176] As an example, the first node includes the UE201.

[0177] As one embodiment, the second node includes the node 203.

[0178] As one embodiment, the second node includes the core network 210.

[0179] As one embodiment, the second node includes the node 203 and the core network 210.

[0180] The above methods facilitate the flexible deployment of AI models on network devices.

[0181] As an example, node 203 is a macrocell base station.

[0182] As an example, node 203 is a microcell base station.

[0183] As an example, node 203 is a PicoCell base station.

[0184] As an example, node 203 is a femtocell.

[0185] As an example, node 203 is a base station device that supports large latency differences.

[0186] As one example, node 203 is a flight platform device.

[0187] As one example, node 203 is a satellite device.

[0188] As an example, the wireless link between the UE201 and the node203 includes a cellular link.

[0189] As an example, the first node and the second node in this application are the UE201 and the node203, respectively.

[0190] As an example, node 203 supports AI (Artificial Intelligence) or machine learning.

[0191] As an example, node 203 supports generating a trained model using training data or generating some parameters of the trained model using training data.

[0192] As an example, the UE201 supports AI (Artificial Intelligence) or Machine Learning.

[0193] As an example, the UE201 supports channel estimation using AI or machine learning.

[0194] As an example, the UE201 supports signal reception using AI or machine learning.

[0195] As an example, the UE201 supports generating a trained model using training data or generating some parameters of the trained model using training data.

[0196] As an example, the first RRC information block is generated in node 203.

[0197] As an example, the second information block is generated in node 203.

[0198] As an example, the target recipient of the first RRC information block includes the UE201.

[0199] As an example, the target recipient of the second information block includes the UE201.

[0200] As an example, the two information blocks in this application are generated in node 203.

[0201] As an example, the target recipient of the two information blocks in this application includes the UE201.

[0202] As an example, the reporting configuration of at least the first CQI in this application is generated in node 203.

[0203] As an example, the target recipient of the reporting configuration of at least the first CQI in this application includes the UE201.

[0204] As an example, the first data signal and the DMRS of the first data signal are generated in the node 203, and the target receiver of the first data signal and the DMRS of the first data signal includes the UE 201.

[0205] Example 3

[0206] 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.

[0207] 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.).

[0208] As an example, the wireless protocol architecture in Figure 3 is applicable to the first node.

[0209] As an example, the wireless protocol architecture in Figure 3 is applicable to the second node.

[0210] As an example, the higher layer mentioned in this application refers to the layer above the physical layer.

[0211] As an example, the first RRC information block is generated in the RRC sublayer 306.

[0212] As an example, the reporting configuration of at least the first CQI is generated in the RRC sublayer 306.

[0213] As an example, the second information block is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0214] As an example, the second information block is generated in the PHY301 or the PHY351.

[0215] As an example, the two information blocks in this application are generated in the MAC sublayer 302 or the MAC sublayer 352.

[0216] As an example, the two information blocks in this application are generated in the PHY301 or the PHY351.

[0217] As an example, the first data signal and the DMRS of the first data signal are generated in the PHY301 or the PHY351.

[0218] Example 4

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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 includes at least: receiving a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; receiving a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations; and transmitting at least a first CQI; wherein 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including a plurality of transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; and the first transmission scheme satisfying that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0227] 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 RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; receiving a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations; and transmitting at least a first CQI; wherein 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including a plurality of transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfying that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0228] 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 includes at least: transmitting a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; transmitting a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations; and receiving at least a first CQI; wherein 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including a plurality of transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0229] As one embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: transmitting a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; transmitting a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations; and receiving at least a first CQI; wherein 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including a plurality of transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0230] As an example, the first node in this application includes the second communication device 450.

[0231] As an example, the second node in this application includes the first communication device 410.

[0232] 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 RRC information block 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 RRC information block in this application.

[0233] 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 second information block 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 second information block in this application.

[0234] 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 two information blocks 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 two information blocks in this application.

[0235] 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 data signal and the DMRS of the first data signal 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 data signal and the DMRS of the first data signal in this application.

[0236] 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 to transmit the at least first CQI in this application; at least one of {the antenna 420, the receiver 418, the receiver processor 470, the multi-antenna receiver processor 472, and the controller / processor 475, and the memory 476} is used to receive the at least first CQI in this application.

[0237] Example 5

[0238] Example 5 illustrates a flowchart of the transmission between a first node and a second node according to an embodiment of this application; as shown in Figure 5. In Figure 5, the steps in block F1 are optional.

[0239] In Figure 5, 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.

[0240] For the first node U1, in step S511, a first RRC information block is received; in step S512, a second information block is received; in step S513, a first data signal and the DMRS of the first data signal are received; and in step S514, at least a first CQI is sent.

[0241] For the second node N1, in step S521, a first RRC information block is sent; in step S522, a second information block is sent; in step S523, a first data signal and the DMRS of the first data signal are sent; and in step S524, at least a first CQI is received.

[0242] In Embodiment 5, the first RRC information block indicates a first RS resource set, which is used for channel measurement and interference measurement; the second information block is used to indicate a first DMRS configuration from multiple DMRS configurations; 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, which includes multiple transmission schemes, each including modulation and code rate, and the first transmission scheme is obtained by the receiver of the first RRC information block (i.e., the first node U1) at least based on the channel measurement and interference measurement on the first RS resource set; the first transmission scheme satisfies that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, where the first threshold is a positive real number greater than 0 and less than 1.

[0243] As an example, the first node U1 is the first node in this application.

[0244] As an example, the second node N1 is the second node in this application.

[0245] 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.

[0246] 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.

[0247] 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.

[0248] As one example, the second node N1 is the serving cell sustaining base station of the first node U1.

[0249] As an example, the step in block F1 is not present, and the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0250] As an example, the steps in block F1 are not present, the first RRC information block includes the reporting configuration of at least the first CQI, the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0251] As an example, the steps in block F1 include the following: the first RRC information block includes the reporting configuration of at least the first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0252] As an example, the steps in block F1 are not present, the first RRC information block includes the reporting configuration of the at least first CQI, the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block triggers or activates the reporting of the at least first CQI.

[0253] As an example, the steps in block F1 include: the first RRC information block includes the reporting configuration of the at least first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block triggers or activates the reporting of the at least first CQI.

[0254] As an example, the steps in block F1 are not present, and the two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

[0255] As an example, the steps in block F1 include two information blocks indicating two DMRS configurations, wherein the first DMRS configuration is the DMRS configuration indicated by the latest information block among the two information blocks, and the second information block is the latest information block among the two information blocks.

[0256] As an example, the two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

[0257] As an example, the steps in block F1 include the second information block scheduling the first data signal, and the first DMRS configuration being the configuration of the DMRS of the first data signal.

[0258] In the above method, the processing of at least one of the first data signal and the DMRS of the first data signal by the first node is implementation-dependent, i.e., determined by the hardware equipment vendor of the first node; several typical but non-limiting implementations are described below:

[0259] In one implementation, the first node estimates the channel matrix based on the DMRS of the first data signal. Then, the first node demultiplexes the DMRS and the data, and demodulates and decodes the demultiplexed data signal to recover the first bit block (e.g., a transport block) carried therein.

[0260] The channel matrix estimated by the first node based on the DMRS of the first data signal can be a traditional channel estimation algorithm (such as least square (LS), minimum mean-square error (MMSE) etc.) or AI-based. For example, the first node inputs the signal on the RE occupied by at least the DMRS of the first data signal and the DMRS sequence into the AI ​​model, and the output of the AI ​​model is used to obtain the estimated channel matrix.

[0261] The data recovery of the first node 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.

[0262] 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 bit block (e.g., a transport block) carried on the first data signal.

[0263] The channel estimation and data recovery process described above can be iterated multiple times to improve the accuracy of channel estimation and data recovery.

[0264] The structure and parameters of the AI ​​model in the above embodiments are known to the first node. For example, they may be obtained by downloading from a network device, or they may be specified in a standard, or they may be implementation-related to the first node (i.e., determined by the hardware device vendor of the first node).

[0265] Typical AI model structures include Transformer architecture, RNN (Recurrent Neural Network), CNN (Conventional Neural Networks), and hybrid models composed of multiple models.

[0266] As an example, the processing of at least one of the first data signal and the DMRS of the first data signal by the first node is based on AI; the processing of at least one of the first data signal and the DMRS of the first data signal by the first node includes at least one of channel estimation, demodulation, and decoding.

[0267] 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 DMRS of the first data signal 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 DMRS of the first data signal is performed in the first node.

[0268] In the above method, the decoding is channel decoding, or the decoding is joint decoding of the source and the channel.

[0269] As an example, the channel estimation of the first node on the DMRS of the first data signal can be based on AI.

[0270] As one embodiment, the first node recovers the first bit block (e.g., a 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 first node is based on AI.

[0271] In the above method, the AI ​​includes ML (Machine Learning).

[0272] 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.

[0273] Examples 6A-6D

[0274] Examples 6A-6D illustrate schematic diagrams of multiple DMRS configurations according to one embodiment of this application, as shown in Figures 6A-6D respectively.

[0275] 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.

[0276] 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.

[0277] In the above method, the position of the RE occupied by DMRS in an RE block is usually referred to as the DMRS pattern.

[0278] As one example, the RE block includes one or more RBs (Resource Blocks).

[0279] As an example, the RE block includes an RB (Resource Block) in the frequency domain.

[0280] As an example, the RE block includes multiple RBs in the frequency domain.

[0281] 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.

[0282] Typically, an RE occupies one subcarrier in the frequency domain and one symbol in the time domain.

[0283] As an example, the symbol is a single-carrier symbol.

[0284] As an example, the symbol is a multi-carrier symbol.

[0285] As an example, the symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0286] As an example, the symbols are subjected to transformation precoding.

[0287] As an example, the symbol is generated by transform precoding followed by IFFT (Inverse Fast Fourier Transform).

[0288] As an example, the symbol is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbol.

[0289] As an example, the symbol is either SC-FDMA (Single Carrier-Frequency Division Multiple Access) or FBMC (Filter Bank Multi Carrier).

[0290] As an example, the temporal density of DMRS includes the number of symbols spaced between two adjacent REs in the temporal domain, or the number of symbols spaced between the two furthest REs in the temporal domain.

[0291] 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.

[0292] 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.

[0293] 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.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] In embodiment 6C, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0298] In embodiments 6B and 6C, 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.

[0299] In Example 6D, 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.

[0300] In Figure 6D, the energy percentage of DMRS on one RE in the first DMRS configuration is different from that in the second DMRS configuration, where different colors represent different energy percentages.

[0301] In the above method, the DMRS configuration includes energy percentage.

[0302] 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;

[0303] or,

[0304] The energy percentage is equal to the energy of the DMRS on one RE minus the energy of the data signal on the RE;

[0305] or,

[0306] The energy percentage is equal to the energy of the data signal on a RE minus the energy of the DMRS on the RE.

[0307] As an example, DMRS energy can be evenly distributed across the RE.

[0308] The advantages of the above methods include: simplified design and low implementation complexity.

[0309] 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.

[0310] 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.

[0311] Example 7

[0312] Example 7 illustrates a schematic diagram of multiple DMRS configurations according to one embodiment of this application; as shown in Figure 7.

[0313] 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.

[0314] As one example, the RE block includes one or more RBs (Resource Blocks).

[0315] As an example, the RE block includes an RB (Resource Block) in the frequency domain.

[0316] As an example, the RE block includes multiple RBs in the frequency domain.

[0317] 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.

[0318] 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;

[0319] or,

[0320] The energy percentage is equal to the energy of the DMRS on one RE minus the energy of the data signal on the RE;

[0321] or,

[0322] The energy percentage is equal to the energy of the data signal on a RE minus the energy of the DMRS on the RE.

[0323] 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.

[0324] 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.

[0325] 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.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] 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.

[0332] Examples 8A-8C

[0333] Examples 8A-8C illustrate schematic diagrams of a set of transmission schemes according to an embodiment of this application, as shown in Figures 8A-8C respectively.

[0334] In Embodiment 8A, the first set of transmission schemes applies to each of the plurality of DMRS configurations. In Figure 8A, the plurality of DMRS configurations includes DMRS configuration #1, ..., DMRS configuration #N, and the first set of transmission schemes applies to each of DMRS configuration #1, ..., DMRS configuration #N.

[0335] In the above method, for any DMRS configuration among the plurality of DMRS configurations, the CQI indicates a transmission scheme from the first set of transmission schemes. Advantages include simplified design.

[0336] In Embodiment 8B, multiple transmission scheme sets correspond to the multiple DMRS configurations, and each transmission scheme set includes multiple transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration. In Figure 8B, DMRS configuration #1, ..., DMRS configuration #N correspond to transmission scheme sets #1, ..., and #N, respectively.

[0337] In the above method, for CQI conditional on different DMRS configurations, transmission schemes can be indicated from different sets of transmission schemes. The advantages include: the candidate transmission schemes (i.e., the transmission scheme sets) applicable to data signals can be different under different DMRS configurations; the candidate transmission schemes are optimized, resulting in high flexibility and adaptability. Furthermore, compared to schemes that share a larger set of transmission schemes across different DMRS configurations, the above method also reduces CQI overhead.

[0338] As an example, the first DMRS configuration depends on the first set of transport schemes.

[0339] In the above method, CQI is conditional on the DMRS configuration corresponding to the transmission scheme set. That is, the CQI is calculated based on which DMRS configuration is determined by determining the transmission scheme set.

[0340] As an example, the first set of transmission schemes depends on the first DMRS configuration.

[0341] In the above method, CQI indicates the transmission scheme from the set of transmission schemes corresponding to the DMRS configuration. That is, the CQI indicates the transmission scheme from which the transmission scheme set is determined by determining the DMRS configuration.

[0342] In embodiment 8C, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration. The first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration. The first transmission scheme set and the second transmission scheme set satisfy at least one of the following: different minimum efficiency and different maximum efficiency. In Figure 8C, the first transmission scheme set includes m1 transmission schemes, the second transmission scheme set includes m2 transmission schemes, and transmission scheme #(i,j) represents the j-th transmission scheme in the i-th transmission scheme set.

[0343] In the above method, a transmission scheme includes modulation and a code rate, and the efficiency of the transmission scheme is equal to the product of the modulation order and the code rate. The minimum efficiency of a set of transmission schemes is the minimum efficiency among all the individual efficiencies of the transmission schemes in the set, and the maximum efficiency of a set of transmission schemes is the maximum efficiency among all the individual efficiencies of the transmission schemes in the set.

[0344] 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 first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of minimum efficiency difference and maximum efficiency difference.

[0345] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of minimum efficiency difference and maximum efficiency difference.

[0346] 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 first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the maximum efficiency of the second transmission scheme set is greater than the maximum efficiency of the first transmission scheme set.

[0347] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the maximum efficiency of the first transmission scheme set is greater than the maximum efficiency of the second transmission scheme set.

[0348] 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 a more efficient transmission scheme due to the increased number of REs that can be occupied by data.

[0349] 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.

[0350] 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 first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the maximum efficiency of the second transmission scheme set is less than the maximum efficiency of the first transmission scheme set.

[0351] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the maximum efficiency of the first transmission scheme set is less than the maximum efficiency of the second transmission scheme set.

[0352] 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 less efficient transmission scheme can be adopted to improve transmission reliability.

[0353] 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 first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the minimum efficiency of the second transmission scheme set is greater than the minimum efficiency of the first transmission scheme set.

[0354] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the minimum efficiency of the first transmission scheme set is greater than the minimum efficiency of the second transmission scheme set.

[0355] 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 a more efficient transmission scheme due to the increased number of REs that can be occupied by data.

[0356] 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.

[0357] 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 first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the minimum efficiency of the second transmission scheme set is less than the minimum efficiency of the first transmission scheme set.

[0358] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap; the first transmission scheme set corresponds to the first DMRS configuration, and the second transmission scheme set corresponds to the second DMRS configuration; the minimum efficiency of the first transmission scheme set is less than the minimum efficiency of the second transmission scheme set.

[0359] 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 less efficient transmission scheme can be adopted to improve transmission reliability.

[0360] 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 ratio in the second DMRS configuration is different from the energy ratio in the first DMRS configuration; a first transmission scheme set corresponds to the first DMRS configuration, and a second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of minimum efficiency difference and maximum efficiency difference.

[0361] As an example, the energy percentage in the DMRS configuration is standard, configurable, or indicated by the DMRS receiver to the DMRS sender.

[0362] 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.

[0363] Example 9

[0364] Example 9 illustrates a schematic diagram of M transmission schemes according to an embodiment of this application; as shown in Figure 9.

[0365] In Example 9, the first transmission scheme is the one with the largest CQI index or the highest efficiency among the M transmission schemes. The M transmission schemes belong to the first transmission scheme set, where M is a positive integer greater than 1. Any of the M transmission schemes satisfies the following condition: under the first DMRS configuration, bit blocks using that transmission scheme are received with a block error rate not exceeding the first threshold. In Figure 9, transmission schemes #1, ..., #M are the M transmission schemes, and the first transmission scheme is the one with the largest CQI index or the highest efficiency.

[0366] As an example, different CQI indices indicate different transmission schemes. Typically, the order of CQI indices from smallest to largest corresponds to the order of efficiency from smallest to largest; the higher the efficiency of the transmission scheme, the more bits of information are transmitted per second. The above method selects the transmission scheme with the largest CQI index or the highest efficiency, thus improving the system's transmission efficiency.

[0367] In the above method, how to determine whether a transmission scheme meets the conditions of the above method is specifically described in the relevant description in Example 1, and will not be repeated here.

[0368] Examples 10A-10B

[0369] Examples 10A-10B illustrate schematic diagrams of a set of bit block sizes according to an embodiment of this application, as shown in Figures 10A-10B respectively.

[0370] In Embodiment 10A, when the first DMRS configuration is used, the size of the bit block using the first transmission scheme is a bit block size from a first set of bit block sizes; wherein, the first set of bit block sizes applies to each of the plurality of DMRS configurations. In Figure 10A, the plurality of DMRS configurations are DMRS configuration #1, ..., DMRS configuration #N.

[0371] In the above method, under the condition of employing any of the plurality of DMRS configurations, the size of a bit block using a transmission scheme is always one bit block size from the first set of bit block sizes. Advantages include: simplified design.

[0372] In Embodiment 10B, under the condition of using the first DMRS configuration, the size of the bit block using the first transmission scheme is a bit block size in the first bit block size set; wherein, each of the plurality of DMRS configurations corresponds to a bit block size set, at least two of the plurality of DMRS configurations correspond to different bit block size sets, the bit block size set includes multiple bit block sizes, the bit block size is a positive integer, and the first bit block size set is the bit block size set corresponding to the first DMRS configuration. In Figure 10B, DMRS configuration #1, ..., DMRS configuration #N correspond to bit block size sets #1, ..., and #N, respectively.

[0373] In the above method, under the condition of using a DMRS configuration, the size of the bit block of a transmission scheme is one of the bit block sizes in the set of bit block sizes corresponding to the DMRS configuration. The advantages include: 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 candidate bit block sizes for data transmission can come from different sets of bit block sizes, improving data transmission reliability, increasing data transmission capacity, and offering high flexibility and adaptability.

[0374] As an example, in the above method, the multiple sets of bit block sizes belong to multiple bit block size tables specified in the standard, or are configured by RRC signaling, or are reported by the first node.

[0375] As an example, in the above method, the bit block is a transport block, and the bit block size is the transport block size; the multiple sets of bit block sizes belong to multiple TBS tables specified in the standard, or are configured by RRC signaling, or are reported by the first node.

[0376] Example 11

[0377] Example 11 illustrates a schematic diagram of a second information block according to an embodiment of this application; as shown in Figure 11.

[0378] In embodiment 11, the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0379] As an example, the reporting configuration of at least the first CQI is used to configure RS resources for channel measurement and RS resources for interference measurement, reporting the frequency domain resources, and at least one of the report quantity.

[0380] As an example, in the above method, the reported quantity includes one or more of the following: RS resource indicator, RSRP (Reference Signal Received Power), SINR (Signal-to-Interference-plus-Noise Ratio), CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), LI (Layer Indicator), RI (Rank Indicator), TDCP (Time Domain Channel Properties), and Capability Index.

[0381] Examples 12A-12B

[0382] Examples 12A-12B illustrate schematic diagrams of a second information block according to another embodiment of this application, as shown in Figures 12A-12B respectively.

[0383] In embodiment 12A, the first RRC information block includes the reporting configuration of at least the first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0384] In Example 12B, the first RRC information block includes the reporting configuration of the at least first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block triggers or activates the reporting of the at least first CQI.

[0385] As an example, the first RRC information block includes the reporting configuration of the at least first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI; the second information block triggers or activates the reporting of the at least first CQI.

[0386] As an example, the advantages of the above method include: compared with RRC signaling, the indication of DMRS configuration is indicated by trigger or activation signaling, which is more dynamic and flexible and can adapt well to changes in the channel environment.

[0387] Examples 13A-13B

[0388] Examples 13A-13B illustrate schematic diagrams of a second information block according to another embodiment of this application, as shown in Figures 13A-13B respectively.

[0389] In embodiment 13A, two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

[0390] In Figure 13A, information block #1 and information block #2 indicate DMRS configuration #1 and DMRS configuration #2, respectively; information block #2 is the latest of them, the second information block is information block #2, and the first DMRS configuration is DMRS configuration #2.

[0391] In embodiment 13B, the first node in this application receives a first data signal and the DMRS of the first data signal; wherein, the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

[0392] As an example, the REs occupied by the first data signal and the DMRS of the first data signal are orthogonal.

[0393] As one embodiment, the REs occupied by the first data signal and the DMRS of the first data signal partially or completely overlap.

[0394] As one embodiment, the second information block is carried by RRC signaling or the second information block includes a MAC CE.

[0395] As one embodiment, the second information block is transmitted on the physical layer channel or the second information block includes DCI (Downlink Control Information).

[0396] As an example, the first data signal is transmitted on the physical layer channel carrying the data.

[0397] As an example, the first data signal is transmitted on PDSCH (Physical Downlink Shared Channel).

[0398] As an example, the first data signal is mapped to DL-SCH (Downlink Shared Channel).

[0399] As an example, the first data signal carries DL-SCH (Downlink Shared Channel) data.

[0400] As an example, the data in the first data signal comes from the DRB (Data Radio Bearer).

[0401] As an example, the first bit block (e.g., a 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 to obtain the first data signal.

[0402] As an example, the first bit block (e.g., a 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 to obtain the first data signal.

[0403] As an example, the second information block indicates the scheduling information of the first data signal, which includes one or more of the following: the port of the DMRS of the first data signal, the configuration of the DMRS of the first data signal, the layer number, the TCI (Transmission configuration indicator) status or beam, MCS, the occupied RB (Resource block) or subcarrier, the occupied symbol, and the HARQ process number.

[0404] In the above method, the total number of ports included in the DMRS of the first data signal is equal to the total number of layers included in the first data signal.

[0405] As an example, a field in the second information block indicates the MCS of the first data signal.

[0406] As one embodiment, the second information block is used to explicitly or implicitly indicate some or all of the information in the configuration of the DMRS of the first data signal.

[0407] As one embodiment, the second information block indicates some or all of the information in the configuration of the DMRS of the first data signal.

[0408] As an example, the second information block indicates which of a plurality of DMRS configurations the DMRS configuration of the first data signal 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.

[0409] As an example, the same field in the second information block indicates the port of the DMRS of the first data signal and some or all of the information in the configuration of the DMRS of the first data signal.

[0410] The advantages of the above method include: simplified signaling design and reduced overhead.

[0411] As an example, different fields in the second information block respectively indicate the port of the DMRS of the first data signal and some or all of the information in the configuration of the DMRS of the first data signal.

[0412] The advantages of the above methods include: high flexibility.

[0413] As an example, the same field in the second information block indicates some or all of the information in the configuration of the MCS and DMRS of the first data signal.

[0414] The advantages of the above method include: simplified signaling design and reduced overhead.

[0415] As an example, different fields in the second information block respectively indicate some or all of the information in the configuration of the MCS and DMRS of the first data signal.

[0416] The advantages of the above methods include: high flexibility.

[0417] As one embodiment, the second information block is transmitted on a physical layer channel or the second information block includes DCI; wherein,

[0418] The RNTI (Radio network temporary identifier) ​​of the second information block indicates some or all of the information in the configuration of the DMRS of the first data signal;

[0419] or,

[0420] The RNTI of the second information block indicates which of a plurality of DMRS configurations the DMRS configuration of the first data signal is; 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.

[0421] In the above method, the RNTI of the second information block is the RNTI used to scramble the CRC (Cyclic Redundancy Check) of the second information block.

[0422] As one embodiment, the second information block indicates the overlap between the DMRS of the first data signal and the REs occupied by the first data signal respectively; the overlap includes one or more of the following: whether they overlap, partially overlap or fully overlap, and the ratio of overlapping REs.

[0423] In the above method, the multiple DMRS configurations are either specified in the standard, configured by RRC signaling, or reported by the first node.

[0424] Example 14

[0425] Example 14 illustrates a schematic diagram of the size of a bit block using a given transmission scheme according to an embodiment of this application; as shown in Figure 14.

[0426] In Example 14, the size of a bit block using a given transmission scheme depends on the number of REs to which the data is allocated and the given transmission scheme; wherein the number of REs to which the data is allocated depends on the number of symbols to which at least the data is allocated and the number of RBs to which the data is allocated.

[0427] As an example, the given transmission scheme is the first transmission scheme, the size of the bit block using the given transmission scheme is the size of the bit block using the first transmission scheme; the number of symbols allocated and the number of RBs allocated are standard, fixed, or configurable.

[0428] As an example, the given transmission scheme is any transmission scheme; the number of allocated symbols and the number of allocated RBs are standard, fixed, or configurable.

[0429] As one embodiment, the second information block schedules the first data signal; the given transmission scheme is the transmission scheme of the first data signal, the bit block adopting the given transmission scheme is the first bit block, the size of the bit block adopting the given transmission scheme is the size of the first bit block; the number of allocated symbols and the number of allocated RBs are indicated by the second information block.

[0430] As an example, the size of a bit block using a given transmission scheme depends on the number of REs allocated to the data and the given transmission scheme; wherein, the number of REs allocated to the data depends on the number of REs allocated to the data in a RE block and the number of allocated RE blocks, and the number of REs allocated to the data in a RE block depends on the number of allocated symbols and the overhead; wherein, the number of REs allocated to the data is N. RE The number of REs allocated to the data in a single RE block is N'. RE The overhead is Or and sum.

[0431] 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.

[0432] As an example, the method for determining the size of the bit block using a given transmission scheme can be found in sections 5.1.3.2 or 6.1.4.2 of 3GPP TS38.214.

[0433] As an example, the first value is the product of the number of REs allocated to the data, the efficiency of the given transmission scheme, and the number of layers of the data; the size of the bit block using the given transmission scheme is obtained based on the first value through at least one of calculation and table lookup.

[0434] As an example, the first value is the product of the number of REs allocated to the data, the modulation order of the given transmission scheme, the code rate of the given transmission scheme, and the number of layers of the data; the size of the bit block using the given transmission scheme is obtained based on the first value through at least one of calculation and table lookup.

[0435] As an example, the first value is N. info The number of REs allocated to the data is N. RE The modulation order of the given transmission scheme is Q.m The code rate of the given transmission scheme is R, and the number of data layers is v.

[0436] 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.

[0437] As an example, the size of a bit block using a given transmission scheme is equal to the integer closest to the second value among all integers in a set of bit block sizes that are not less than the second value; the second value is a function of the first value.

[0438] As an example, the second value is N′ info .

[0439] 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.

[0440] As an example, the second value is Where c is the first value.

[0441] As an example, the second value is Where c is the first value.

[0442] Examples of some implementations of "the number of REs allocated to the data" in the above method are as follows:

[0443] As an example, the number of REs allocated to the data is equal to the total number of allocated REs minus the overhead.

[0444] As an example, the number of REs allocated to the data depends on the number of REs allocated to the data in a RE block and the number of RE blocks allocated.

[0445] As an example, the number of REs allocated to the data is a function of the number of REs allocated to the data in a RE block and the number of RE blocks allocated.

[0446] As an example, the number of REs allocated to the data is equal to the product of the number of REs allocated to the data in a RE block and the number of RE blocks allocated.

[0447] As an example, the number of REs allocated to the data is N.RE N RE =min(A, N') RE )·n; where N' RE The number of REs allocated to the data within a single RE block is A, where A is a positive integer and n is the number of RE blocks allocated.

[0448] As a sub-implementation of the above embodiment, A is 156.

[0449] As a sub-implementation of the above embodiments, A is standard or configurable.

[0450] Examples of some implementations of "the number of REs allocated to the data in a RE block" in the above method are as follows:

[0451] As an example, the number of REs allocated to the data in a RE block is equal to or less than the number of REs included in a RE block minus the overhead.

[0452] As an example, the number of REs allocated within a single RE block is N'. RE ;

[0453] Where b is the overhead, and Nsc is the number of subcarriers in a RE block. It is the number of symbols assigned.

[0454] As an example, the number of REs allocated within a single RE block is N'. RE ;

[0455] Where b is the overhead, and Nsc is the number of subcarriers in a RE block. N is the number of symbols assigned. DMRS It is the DMRS overhead without data within a RE block, the DMRS overhead without data including the number of DMRS REs orthogonal to the data REs, and at least the number of DMRS REs orthogonal to the data REs in the number of REs in the DMRS CDM group without data.

[0456] As an example, the number of REs allocated within a single RE block is N'. RE ;

[0457] Where f(aN) DMRS )=aN DMRS or or

[0458] Where a is a positive real number, 0≤a≤1 or 0<a≤1;

[0459] 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 assigned. DMRS It is the DMRS overhead within a RE block, the DMRS overhead including the number of DMRS REs and at least the number of DMRS REs in the number of REs in the DMRS CDM group without data.

[0460] As a sub-implementation of the above embodiments, the overhead described in this application is b, or f(aN) DMRS )+b.

[0461] As a sub-implementation of the above embodiments, 'a' is standard or configurable.

[0462] 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.

[0463] In the above method, the RE block occupies one RB in the frequency domain, and the number of allocated RE blocks is the number of allocated RBs; or, the RE block occupies multiple RBs in the frequency domain, and the number of allocated RE blocks is the number of allocated RBs divided by the number of RBs occupied by the RE block.

[0464] Example 15

[0465] Example 15 illustrates a structural block diagram of a processing apparatus for 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 transmitter 1502.

[0466] As one example, the first node is a user equipment.

[0467] As an example, the first node is a relay node.

[0468] As one example, the first node is a terminal.

[0469] As one example, the terminal is a user equipment.

[0470] 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.

[0471] As one embodiment, the first transmitter 1502 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, and data source 467.

[0472] The first receiver 1501 receives the first RRC information block and the second information block;

[0473] The first transmitter 1502 transmits at least the first CQI;

[0474] In Example 15, the first RRC information block indicates a first RS resource set, which is used for channel measurement and interference measurement; the second information block is used to indicate a first DMRS configuration from a plurality of DMRS configurations; 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, which includes a plurality of transmission schemes, each including modulation and code rate, and the first transmission scheme is obtained at least based on the channel measurement and interference measurement on the first RS resource set; the first transmission scheme satisfies that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0475] As an example, the first transmission scheme is the one with the largest CQI index or the highest efficiency among the M transmission schemes, and the M transmission schemes belong to the first transmission scheme set, where M is a positive integer greater than 1; any of the M transmission schemes satisfies the following condition: under the condition of using the first DMRS configuration, the bit block using the transmission scheme is received with a block error rate not exceeding the first threshold.

[0476] As one embodiment, multiple transmission scheme sets correspond to the multiple DMRS configurations, and the transmission scheme set includes multiple transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration.

[0477] As an example, under the condition of using the first DMRS configuration, the size of the bit block using the first transmission scheme is a bit block size in a first set of bit block sizes; wherein, each of the plurality of DMRS configurations corresponds to a set of bit block sizes, at least two of the plurality of DMRS configurations correspond to different sets of bit block sizes, the set of bit block sizes includes a plurality of bit block sizes, the bit block size is a positive integer, and the first set of bit block sizes is the set of bit block sizes corresponding to the first DMRS configuration.

[0478] As one embodiment, the first RRC information block includes the reporting configuration of at least the first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0479] As an example, the two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

[0480] As one embodiment, the first receiver 1501 receives a first data signal and a DMRS of the first data signal; wherein, the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

[0481] As an example, the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0482] 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.

[0483] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0484] 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.

[0485] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, a first transmission scheme set corresponds to the first DMRS configuration, and a second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of the following: different minimum efficiency and different maximum efficiency.

[0486] 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.

[0487] Example 16

[0488] Example 16 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of this 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 receiver 1602.

[0489] In one embodiment, the second node is a base station device.

[0490] As one embodiment, the second node is a network device, which includes at least one of a core network device and an access network device.

[0491] As one example, the second node is a device that provides wireless communication services and can communicate with terminal devices, and is usually located on the network side.

[0492] In one embodiment, the second node is a user equipment.

[0493] As one embodiment, the second node is a relay node device.

[0494] 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.

[0495] As one embodiment, the second receiver 1602 includes at least one of the following in embodiment 4: antenna 420, receiver 418, receiver processor 470, multi-antenna receiver processor 472, controller / processor 475, and memory 476.

[0496] The second transmitter 1601 sends a first RRC information block; then sends a second information block.

[0497] The second receiver 1602 receives at least the first CQI;

[0498] In Embodiment 16, the first RRC information block indicates a first RS resource set, which is used for channel measurement and interference measurement; the second information block is used to indicate a first DMRS configuration from a plurality of DMRS configurations; 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, which includes a plurality of transmission schemes, each including modulation and code rate, and the first transmission scheme is obtained by the receiver of the first RRC information block at least based on the channel measurement and interference measurement on the first RS resource set; the first transmission scheme satisfies that, under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

[0499] As an example, the first transmission scheme is the one with the largest CQI index or the highest efficiency among the M transmission schemes, and the M transmission schemes belong to the first transmission scheme set, where M is a positive integer greater than 1; any of the M transmission schemes satisfies the following condition: under the condition of using the first DMRS configuration, the bit block using the transmission scheme is received with a block error rate not exceeding the first threshold.

[0500] As one embodiment, multiple transmission scheme sets correspond to the multiple DMRS configurations, and the transmission scheme set includes multiple transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration.

[0501] As an example, under the condition of using the first DMRS configuration, the size of the bit block using the first transmission scheme is a bit block size in a first set of bit block sizes; wherein, each of the plurality of DMRS configurations corresponds to a set of bit block sizes, at least two of the plurality of DMRS configurations correspond to different sets of bit block sizes, the set of bit block sizes includes a plurality of bit block sizes, the bit block size is a positive integer, and the first set of bit block sizes is the set of bit block sizes corresponding to the first DMRS configuration.

[0502] As one embodiment, the first RRC information block includes the reporting configuration of at least the first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

[0503] As an example, the two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

[0504] As one embodiment, the second transmitter 1601 transmits a first data signal and a DMRS of the first data signal; wherein the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

[0505] As an example, the reporting configuration of at least the first CQI includes the first RRC information block and the second information block.

[0506] 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.

[0507] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration; in the second DMRS configuration, the DMRS RE and the data RE are orthogonal; in the first DMRS configuration, the DMRS RE and the data RE partially or completely overlap.

[0508] 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.

[0509] As one embodiment, the plurality of DMRS configurations include a first DMRS configuration and a second DMRS configuration, a first transmission scheme set corresponds to the first DMRS configuration, and a second transmission scheme set corresponds to the second DMRS configuration; the first transmission scheme set and the second transmission scheme set satisfy at least one of the following: different minimum efficiency and different maximum efficiency.

[0510] 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.

[0511] 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.

[0512] 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 be considered descriptive rather than restrictive in any way. 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 used for wireless communication, characterized in that, include: A first receiver receives a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; and receives a second information block, the second information block being used to indicate a first DMRS configuration from a plurality of DMRS configurations. The first transmitter sends at least the first CQI; The DMRS configuration includes one or more of the following: the location of REs occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

2. The first node according to claim 1, characterized in that, The first transmission scheme is the one with the largest CQI index or the highest efficiency among the M transmission schemes, and the M transmission schemes belong to the first transmission scheme set, where M is a positive integer greater than 1; any of the M transmission schemes satisfies the following: under the condition of using the first DMRS configuration, the bit block using the transmission scheme is received at a block error rate not exceeding the first threshold.

3. The first node according to claim 1 or 2, characterized in that, Multiple transmission scheme sets correspond to the multiple DMRS configurations, and the transmission scheme set includes multiple transmission schemes; the first transmission scheme set is the transmission scheme set corresponding to the first DMRS configuration.

4. The first node according to any one of claims 1 to 3, characterized in that, Under the condition of using the first DMRS configuration, the size of the bit block using the first transmission scheme is a bit block size in the first bit block size set; wherein, each DMRS configuration in the plurality of DMRS configurations corresponds to a bit block size set, at least two DMRS configurations in the plurality of DMRS configurations respectively correspond to different bit block size sets, the bit block size set includes a plurality of bit block sizes, the bit block size is a positive integer, and the first bit block size set is the bit block size set corresponding to the first DMRS configuration.

5. The first node according to any one of claims 1 to 4, characterized in that, The first RRC information block includes the reporting configuration of at least the first CQI, and the first RRC information block includes some or all of the fields in one or more RRC IEs; the second information block includes MAC CE or DCI.

6. The first node according to any one of claims 1 to 5, characterized in that, The two information blocks respectively indicate two DMRS configurations, the first DMRS configuration being the DMRS configuration indicated by the latest information block of the two information blocks, and the second information block being the latest information block of the two information blocks.

7. The first node according to any one of claims 1 to 6, characterized in that, include: The first receiver receives the first data signal and the DMRS of the first data signal; Wherein, the second information block schedules the first data signal, and the first DMRS configuration is the configuration of the DMRS of the first data signal.

8. A second node used for wireless communication, characterized in that, include: The second transmitter sends a first RRC information block, which indicates a first RS resource set, and the first RS resource set is used for channel measurement and interference measurement. Send a second information block, which is used to indicate the first DMRS configuration from multiple DMRS configurations; The second receiver receives at least the first CQI; 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, the bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

9. A method used in a first node of wireless communication, characterized in that, include: Receive a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; Receive a second information block, which is used to indicate a first DMRS configuration from multiple DMRS configurations; Send at least the first CQI; The DMRS configuration includes one or more of the following: the location of REs occupied in a RE block, time-domain density, frequency-domain density, overlap between DMRS REs and data REs, and energy percentage; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, a bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

10. A method used in a second node of wireless communication, characterized in that, include: Send a first RRC information block, the first RRC information block indicating a first RS resource set, the first RS resource set being used for channel measurement and interference measurement; Send a second information block, which is used to indicate the first DMRS configuration from multiple DMRS configurations; Receive at least the first CQI; 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; the first CQI is used to indicate a first transmission scheme from a first transmission scheme set, the first transmission scheme set including multiple transmission schemes, the transmission scheme including modulation and code rate, the first transmission scheme being obtained by the receiver of the first RRC information block at least based on the channel measurement and the interference measurement on the first RS resource set; the first transmission scheme satisfies that: under the condition of using the first DMRS configuration, the bit block using the first transmission scheme is received with a block error rate not exceeding a first threshold, the first threshold being a positive real number greater than 0 and less than 1.

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