WO2023221904A1

WO2023221904A1 - Method and apparatus used in wireless communication node

Info

Publication number: WO2023221904A1
Application number: PCT/CN2023/094101
Authority: WO
Inventors: 吴克颖; 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2022-05-19
Filing date: 2023-05-15
Publication date: 2023-11-23
Also published as: CN117155527A

Abstract

Disclosed in the present application are a method and apparatus used in a wireless communication node. The method comprises: a first node receiving first signaling; and sending a first signal. A first domain and a second domain in the first signaling are used to determine an antenna port for sending the first signal or a precoder for the first signal. The first domain in the first signaling indicates a first number of layers; and the second domain in the first signaling indicates a second number of layers, or the interpretation of the second domain in the first signaling is related to the first number of layers. The first signaling indicates a first DMRS port sequence. The number of DMRS ports included in the first DMRS port sequence is equal to the first number of layers or the sum of the first number of layers and the second number of layers; and the number of DMRS ports included in the first DMRS port sequence is related to the first information. The method provides a flexible signaling design for uplink transmission based on a multi-SRS resource set.

Description

Method and device used in wireless communication nodes

Technical field

The present application relates to transmission methods and devices in wireless communication systems, in particular to wireless signal transmission methods and devices in wireless communication systems supporting cellular networks.

Background technique

Multi-antenna technology is a key technology in the 3GPP (3rd Generation Partner Project) LTE (Long-term Evolution) system and NR (New Radio) system. Additional spatial degrees of freedom are obtained by configuring multiple antennas at communication nodes, such as base stations or UEs (User Equipment). Multiple antennas use beamforming to form beams pointing in a specific direction to improve communication quality. The degree of freedom provided by multiple antenna systems can be exploited to improve transmission reliability and/or throughput. When multiple antennas belong to multiple TRPs (Transmitter Receiver Points, transmitting and receiving nodes)/panels (antenna panels), additional diversity gain can be obtained by utilizing the spatial differences between different TRPs/panels. In NRR(release)17, uplink transmission based on multiple beams/TRP/panel is supported to improve the reliability of uplink transmission. In R17, a UE can be configured with multiple SRS (Sounding Reference Signal) resource sets based on codebook (codebook) or non-codebook (non-codebook). Different SRS resource sets correspond to different beams/TRP/ panel, used to implement multi-beam/TRP/panel uplink transmission.

Contents of the invention

Uplink signals based on different SRS resource sets can occupy mutually orthogonal time domain resources, such as the approach in R17, and can also occupy mutually orthogonal frequency domain resources or overlapping time-frequency resources. In addition, uplink signals based on different SRS resource sets can occupy the same DMRS port or different DMRS ports. Different resource (including but not limited to time domain resources, frequency domain resources and DMRS ports) occupation methods will bring different trade-offs between transmission reliability, throughput and resource utilization, bringing greater flexibility to system design. . The applicant found through research that different resource occupancy methods of uplink signals based on different SRS resource sets will affect various scheduling information of the uplink signal, such as the number of layers of the signal, DMRS (DeModulation Reference Signals), demodulation reference signal ) port, PTRS (Phase-tracking reference signal, phase tracking reference signal) port, number of code words and antenna port, etc. Therefore, the signaling design for uplink transmission based on multiple SRS resource sets is a problem that needs to be solved.

In response to the above problems, this application discloses a solution. It should be noted that although the above description uses cellular networks and uplink transmission as examples, this application is also applicable to other scenarios such as sidelink transmission and downlink transmission, and achieves similar technical effects in cellular networks and uplink transmission. In addition, adopting unified solutions for different scenarios (including but not limited to cellular network, secondary link, uplink transmission, and downlink transmission) can also help reduce hardware complexity and cost. In the case of no conflict, the embodiments and features in the embodiments of the first node of the present application can be applied to the second node, and vice versa. The embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

As an example, the terminology (Terminology) in this application is explained with reference to the definition of the TS36 series of standard protocols of 3GPP.

As an example, the explanation of terms in this application is with reference to the definitions of the TS38 series of specification protocols of 3GPP.

As an example, the interpretation of terms in this application refers to the definitions of the TS37 series of specification protocols of 3GPP.

As an example, the interpretation of terms in this application is with reference to the definitions of the IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) standard protocols.

This application discloses a method used in a first node of wireless communication, which is characterized by including:

receive the first signaling;

Send the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the Interpretation and description of the second domain The first layer number is related; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the number of DMRS ports included in the first DMRS port sequence is equal to the first DMRS port sequence. The number of layers is equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or is equal to the first layer number. and the second layer number are related to the first information.

As an embodiment, the problems to be solved by this application include: signaling design for uplink transmission based on multiple SRS resource sets. In the above method, the number of DMRS ports included in the first DMRS port sequence may be equal to the first layer number or the sum of the first layer number and the second layer number, and the number of DMRS ports included Related to the first information, this problem is solved.

As an embodiment, the benefits of the above method include: flexible signaling design, reduced signaling overhead, and improved transmission reliability and/or throughput.

According to an aspect of the present application, it is characterized in that the first signaling indicates the first DMRS port sequence from a first DMRS port sequence list; the first domain in the first signaling is used for Determine the first DMRS port sequence list and whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.

According to an aspect of the present application, the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the second reference signal resource group respectively including at least one reference signal resource; any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group belongs to the second reference signal Resource set; the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.

As an embodiment, the characteristics of the above method include: the first reference signal resource set and the second reference signal resource set are respectively an SRS resource set, and the first signal is transmitted based on multiple SRS resource sets.

According to an aspect of the present application, the first information includes: the number of PTRS ports associated with the first DMRS port sequence.

According to an aspect of the present application, the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.

According to an aspect of the present application, the first information includes: a transmission scheme of the first signal.

According to an aspect of the present application, it is characterized in that the first information includes at least one of the following:

The number of codewords carried by the first signal;

A first higher layer parameter indicating the maximum number of codewords for a single DCI schedule;

a second higher layer parameter, the second higher layer parameter indicating the maximum number of layers;

Whether the first layer number is used to determine the interpretation of the second domain in the first signaling.

According to an aspect of the present application, the first node includes a user equipment.

According to an aspect of the present application, the first node includes a relay node.

This application discloses a method used in a second node of wireless communication, which is characterized by including:

Send the first signaling;

receive the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the The interpretation of the second domain is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port sequence includes DMRS The number of ports is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. It is still equal to the sum of the first layer number and the second layer number and is related to the first information.

The number of codewords carried by the first signal;

According to an aspect of the present application, the second node is a base station.

According to an aspect of the present application, the second node is user equipment.

According to an aspect of the present application, the second node is a relay node.

This application discloses a first node device used for wireless communication, which is characterized in that it includes:

The first receiver receives the first signaling;

The first transmitter sends the first signal;

This application discloses a second node device used for wireless communication, which is characterized in that it includes:

The second transmitter sends the first signaling;

a second receiver to receive the first signal;

As an example, compared with traditional solutions, this application has the following advantages:

Flexible signaling design is provided for uplink transmission based on multiple SRS resource sets.

Signaling overhead is reduced.

Improved transmission reliability and/or throughput.

Description of the drawings

Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of the non-limiting embodiments taken with reference to the following drawings:

Figure 1 shows a flow chart of first signaling and first signals according to an embodiment of the present application;

Figure 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

Figure 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

Figure 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

Figure 5 shows a flow chart of transmission according to an embodiment of the present application;

Figure 6 shows a schematic diagram of whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information according to an embodiment of the present application;

Figure 7 shows a schematic diagram in which the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal according to an embodiment of the present application;

Figure 8 shows a schematic diagram of the first domain and the second domain in the first signaling according to an embodiment of the present application;

Figure 9 shows a schematic diagram of the first domain and the second domain in the first signaling according to an embodiment of the present application;

Figure 10 shows a schematic diagram of the mapping of a first signal to an antenna port and the mapping of a DMRS port to an antenna port in a first DMRS port sequence according to an embodiment of the present application;

Figure 11 shows a schematic diagram of the mapping of a first signal to an antenna port and the mapping of a DMRS port to an antenna port in a first DMRS port sequence according to an embodiment of the present application;

Figure 12 shows a schematic diagram in which the first information includes the number of PTRS ports associated with the first DMRS port sequence according to an embodiment of the present application;

Figure 13 shows a schematic diagram in which the first information includes the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong according to an embodiment of the present application;

Figure 14 shows a schematic diagram of a transmission scheme in which the first information includes a first signal according to an embodiment of the present application;

Figure 15 shows a schematic diagram in which the first information includes the number of codewords carried by the first signal according to an embodiment of the present application;

Figure 16 shows a schematic diagram in which the first information includes a first higher-level parameter according to an embodiment of the present application;

Figure 17 shows a schematic diagram in which the first information includes a second higher layer parameter according to an embodiment of the present application;

Figure 18 shows a schematic diagram of the first information including whether the first layer number is used to determine the interpretation of the second domain in the first signaling according to an embodiment of the present application;

Figure 19 shows a structural block diagram of a processing device used in a first node device according to an embodiment of the present application;

Figure 20 shows a structural block diagram of a processing device used in a second node device according to an embodiment of the present application.

Detailed ways

The technical solution of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily.

Example 1

Embodiment 1 illustrates a flow chart of the first signaling and the first signal according to an embodiment of the present application, as shown in FIG. 1 . In 100 shown in Figure 1, each block represents a step. In particular, the order of the steps in the box does not imply a specific temporal relationship between the steps.

In Embodiment 1, the first node in this application receives the first signaling in step 101; and sends the first signal in step 102. Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the Interpretation of the second domain and the first Related to the number of layers; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number Or equal to the sum of the first layer number and the second layer number; whether the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the first layer number and the first layer number The sum of the second layer numbers is related to the first information.

As an embodiment, the first signaling includes physical layer signaling.

As an embodiment, the first signaling includes dynamic signaling.

As an embodiment, the first signaling includes layer 1 (L1) signaling.

As an embodiment, the first signaling includes DCI (Downlink Control Information).

As an embodiment, the first signaling is a DCI.

As an embodiment, the first signaling includes one or more DCI fields (fields) in one DCI.

As an embodiment, the format of the first signaling belongs to one of Format 0_0, Format 0_1 or Format 0_2.

As an embodiment, the first signaling includes RRC (Radio Resource Control) signaling.

As an embodiment, the first signaling includes MAC CE (Medium Access Control layer Control Element, media access control layer control element).

As an embodiment, the first signal includes a baseband signal.

As an embodiment, the first signal includes a wireless signal.

As an embodiment, the first signal includes a radio frequency signal.

As an embodiment, the first signal carries at least one TB (Transport Block).

As an embodiment, the first signal carries at least one CBG (Code Block Group).

As an embodiment, the scheduling information of the first signal includes time domain resources, frequency domain resources, MCS (Modulation and Coding Scheme), DMRS port, HARQ (Hybrid Automatic Repeat request) process number (process number), RV (Redundancy version), NDI (New data indicator), TCI (Transmission Configuration Indicator) state (state) or SRI (Sounding reference signal Resource Indicator) one or more.

As an embodiment, the first signaling explicitly indicates the scheduling information of the first signal.

As an embodiment, the first signaling implicitly indicates the scheduling information of the first signal.

As an embodiment, the first signaling explicitly indicates a part of the scheduling information of the first signal, and implicitly indicates another part of the scheduling information of the first signal.

As an embodiment, the first signaling includes the scheduling information of the first signal.

As an embodiment, the first signal corresponds to two TCI states.

As an embodiment, the first signal corresponds to two SRS (Sounding Reference Signal, sounding reference signal) resource sets.

As an embodiment, the first field and the second field each include at least one bit.

As an embodiment, the first domain and the second domain each include at least one DCI domain.

As an embodiment, the first field and the second field respectively include all or part of the bits in at least one DCI field.

As an embodiment, the first domain and the second domain are each a DCI domain.

As an embodiment, the first domain includes a DCI domain SRS resource indicator.

As an embodiment, the first domain includes DCI domain Precoding information and number of layers.

As an embodiment, the first domain includes the first SRS resource indicator domain in the DCI.

As an embodiment, the first domain includes the first Precoding information and number of layers domain in DCI.

As an embodiment, the second domain includes DCI domain Second SRS resource indicator.

As an embodiment, the second domain includes DCI domain Second Precoding information.

As an embodiment, the second domain includes information in the DCI domain Second SRS resource indicator.

As an embodiment, the second domain includes information in the DCI domain Second Precoding information.

As an embodiment, the second domain includes the second SRS resource indicator domain in the DCI.

As an embodiment, the second domain includes the second Precoding information and number of layers domain in DCI.

As an embodiment, the first field indicates at least one SRI, and the second field indicates at least one SRI.

As an embodiment, the first domain and the second domain respectively indicate at least one reference signal resource.

As an embodiment, the first domain and the second domain respectively indicate at least one SRS resource.

As an embodiment, the first field indicates a TPMI (Transmitted Precoding Matrix Indicator, transmitted precoding matrix identifier), and the second field indicates a TPMI.

As an embodiment, the first field indicates a TPMI and a number of layers, and the second field indicates a TPMI and a number of layers.

As an embodiment, the first field indicates a TPMI and a layer number, and the second field indicates a TPMI.

As an embodiment, the first field and the second field respectively indicate a precoder.

As an embodiment, the first domain is positioned before the second domain in the first signaling.

As an embodiment, when the third higher-level parameter is set to "codebook", the first domain and the second domain respectively indicate a TPMI; when the third higher-level parameter is set to "nonCodebook" , the first domain and the second domain respectively indicate at least one SRI; the name of the third higher-layer parameter includes "txConfig".

As an embodiment, the first domain in the first signaling and the second domain in the first signaling are used to determine the antenna port that sends the first signal.

As an embodiment, the first domain in the first signaling and the second domain in the first signaling are jointly used to determine the antenna port that sends the first signal.

As an embodiment, the first domain in the first signaling and the second domain in the first signaling are used to determine a precoder of the first signal.

As an embodiment, the first domain in the first signaling and the second domain in the first signaling are jointly used to determine the precoder of the first signal.

As an embodiment, the precoder is a matrix or a column vector.

As an embodiment, when the third higher layer parameter is set to "codebook", the first domain in the first signaling and the second domain in the first signaling are used to determine The precoder of the first signal; when the third higher layer parameter is set to "nonCodebook", the first domain in the first signaling and the first domain in the first signaling The second field is used to determine the antenna port that sends the first signal; the name of the third higher layer parameter includes "txConfig".

As an embodiment, the third higher layer parameter is a higher layer parameter "txConfig".

As an embodiment, the third higher layer parameter is configured by PUSCH-Config IE (Information Element, information unit).

As an embodiment, the number of the antenna ports for transmitting the first signal is equal to 1 or greater than 1.

As an embodiment, the number of antenna ports for transmitting the first signal is greater than 1.

As an embodiment, the antenna ports that send the first signal are p ₀ ...p _ρ-1 , and ρ is the number of the antenna ports that send the first signal.

As an example, the definition of p ₀ ...p _ρ-1 can be found in 3GPP TS38.211 and 3GPP TS38.214.

As an embodiment, the first DMRS port sequence is mapped to the same antenna port as the antenna port that transmits the first signal.

As an embodiment, the first layer number and the second layer number are positive integers respectively.

As an embodiment, the first layer number and the second layer number are positive integers not greater than 4 respectively.

As an embodiment, the first layer number and the second layer number are positive integers not greater than 8 respectively.

As an embodiment, the number of first layers is equal to the number of second layers.

As an embodiment, the number of first layers is not equal to the number of second layers.

As an embodiment, the sum of the first number of layers and the second number of layers is not greater than 4.

As an embodiment, the sum of the first number of layers and the second number of layers is not greater than 8.

As an embodiment, the sum of the first number of layers and the second number of layers is not greater than 16.

As an embodiment, the layer refers to: MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) layer.

As an embodiment, the number of layers refers to: number of layers.

As an example, the number of layers refers to: number of MIMO layers.

As an embodiment, the number of layers refers to: transmission rank.

As an embodiment, the first domain in the first signaling indicates at least one reference signal resource, and the number of first layers is equal to the reference signal resource indicated by the first domain in the first signaling. quantity.

As a sub-embodiment of the above embodiment, the reference signal resource is an SRS resource.

As an embodiment, the first field in the first signaling indicates a layer number, and the first layer number is equal to the layer number indicated by the first field in the first signaling.

As an embodiment, the first domain in the first signaling indicates a precoder, and the number of layers corresponding to the precoder indicated by the first domain in the first signaling is equal to the first Number of layers.

As an embodiment, the first field in the first signaling indicates a precoder, and the number of columns of the precoder indicated by the first field in the first signaling is equal to the first Number of layers.

As an embodiment, the second domain in the first signaling indicates at least one reference signal resource, and the number of second layers is equal to the reference signal resource indicated by the second domain in the first signaling. The number of reference signal resources in the group.

As an embodiment, the second domain in the first signaling indicates a precoder, and the number of second layers is equal to the precoder corresponding to the second domain in the first signaling. of layers.

As an embodiment, the first signaling indicates only the first layer number among the first layer number and the second layer number.

As an example, the second layer number does not need to be indicated separately.

As an embodiment, the second layer number does not need to be indicated separately from the first layer number.

As an embodiment, on the basis that the first signaling explicitly indicates the first layer number, the first signaling does not need to explicitly indicate the second layer number.

As an embodiment, on the basis that the first layer number is indicated, the second layer number does not need to be indicated separately.

As an embodiment, the second number of layers is equal to the first number of layers.

As an embodiment, the second number of layers is always equal to the first number of layers.

As an embodiment, the first signaling explicitly indicates the first layer number and implicitly indicates the second layer number.

As an embodiment, the first signaling implicitly indicates the second layer number by indicating the first layer number.

As an embodiment, the value of the first field in the first signaling indicates the first layer number.

As an embodiment, the first signaling indicates the first layer number and the second layer number.

As an embodiment, the first signaling indicates the first layer number and the second layer number respectively.

As an embodiment, the first signaling explicitly indicates the first layer number and the second layer number respectively.

As an embodiment, the first field in the first signaling indicates the first layer number, and the second field in the first signaling indicates the second layer number.

As an embodiment, the value of the first field in the first signaling indicates the first layer number, and the value of the second field in the first signaling indicates the second layer number. .

As an embodiment, the first signaling includes a first bit group, the first bit group in the first signaling indicates the first DMRS port sequence, and the first bit group includes at least one bit .

As an embodiment, the value of the first bit group indicates the first DMRS port sequence.

As an embodiment, the first bit group includes at least one DCI field.

As an embodiment, the first bit group is a DCI field.

As an embodiment, the first bit group includes DCI domain Antenna ports.

As an embodiment, the first bit group is DCI domain Antenna ports.

As an embodiment, the DMRS refers to: DeModulation Reference Signals, demodulation reference signals.

As an embodiment, the first DMRS port sequence includes only one DMRS port.

As an embodiment, the first DMRS port sequence includes multiple DMRS ports.

As an embodiment, the first DMRS port sequence includes a plurality of DMRS ports arranged in sequence.

As an embodiment, the first DMRS port sequence includes a plurality of DMRS ports arranged sequentially from left to right.

As an embodiment, the first DMRS port sequence consists of a plurality of DMRS ports arranged in sequence.

As an embodiment, any DMRS port in the first DMRS port sequence is a non-negative integer.

As an embodiment, any DMRS port in the first DMRS port sequence is a non-negative integer not greater than 12.

As an embodiment, any DMRS port in the first DMRS port sequence is a non-negative integer not greater than 24.

As an embodiment, the values of DMRS ports in the first DMRS port sequence are not equal to each other.

As an example, the first DMRS port sequence is The v is the number of DMRS ports included in the first DMRS port sequence.

As an example, the For the definition, please refer to 3GPP TS38.211 and 3GPP TS38.214.

As an embodiment, the first DMRS port sequence is used to transmit DMRS of the first signal.

As an embodiment, the first DMRS port sequence is used to transmit DMRS carrying PUSCH of the first signal.

As an embodiment, the first DMRS port sequence includes v DMRS ports, where v is a positive integer; the PUSCH carrying the first signal has v DMRS; the v DMRS are respectively on the v DMRS ports. was sent on.

As an embodiment, the DMRS on the DMRS port in the first DMRS port sequence is mapped to the same antenna port as the antenna port that sends the first signal.

As an embodiment, the DMRS on the DMRS port in the first DMRS port sequence is precoded and mapped to the same antenna port as the antenna port that sends the first signal.

As an embodiment, the given DMRS port is any DMRS port in the first DMRS port sequence, the first signal occupies K symbols, and the given DMRS port occupies K1 of the K symbols. symbol, the K is a positive integer greater than 1, the K1 is a positive integer not greater than the K and greater than 1, the first node is in the first node in any two of the K1 symbols. The given DMRS port is transmitted using the same spatial domain filter within the frequency domain resource occupied by a signal.

As a sub-embodiment of the above embodiment, the first node uses the same spatial domain filter in any two symbols among the K1 symbols in the frequency domain resources occupied by the first signal. Send DMRS on the specified DMRS port.

As an embodiment, the symbols include OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols.

As an embodiment, the symbols include DFT-S-OFDM (Discrete Fourier Transform Spread OFDM, Discrete Fourier Transform Orthogonal Frequency Division Multiplexing) symbols.

As an embodiment, the symbols are obtained after the output of the transform precoding is subjected to OFDM symbol generation.

As an embodiment, the given DMRS port is any DMRS port in the first DMRS port sequence, the first signal occupies P subcarriers, and the given DMRS port occupies P1 subcarriers in the P subcarriers. carrier, the P is a positive integer greater than 1, the P1 is a positive integer not greater than the P and greater than 1, the first node is on the first node on any two subcarriers of the P1 subcarrier. The given DMRS port is transmitted using the same spatial domain filter within the time domain resource occupied by a signal.

As a sub-embodiment of the above embodiment, the first node uses the same spatial domain filter on any two subcarriers among the P1 subcarriers within the time domain resources occupied by the first signal. Send DMRS on the specified DMRS port.

As an embodiment, the first node is not configured with a seventh higher-layer parameter, or the value of the seventh higher-layer parameter configured on the first node belongs to a fourth parameter value set; the seventh higher-layer parameter The name includes "repetitionScheme", the fourth parameter value set includes at least one parameter value, and each parameter value in the fourth parameter value set includes neither the string "tdm" nor the string "fdm" .

As an example, the seventh higher layer parameter is indicated by PUSCH-Config IE.

As an embodiment, the first node is not configured with the higher-level parameter "pusch-AggregationFactor".

As an embodiment, the eighth higher-level parameter configured on the first node does not have an entry including the first type of parameter; the name of the eighth higher-level parameter includes "pusch-TimeDomain" and " AllocationList", the name of the first type of parameter includes "numberOfRepetitions".

As a sub-embodiment of the above embodiment, the eighth higher layer parameter is configured by PUSCH-Config IE.

As a sub-embodiment of the above embodiment, the name of the eighth higher-level parameter includes "pusch-TimeDomainAllocationList".

As a sub-embodiment of the above embodiment, the name of the eighth higher-level parameter includes "pusch-TimeDomainResourceAllocationList".

As an embodiment, the second field in the first signaling indicates the second layer number.

As an embodiment, the value of the second field in the first signaling indicates the second layer number.

As an embodiment, the second domain in the first signaling indicates at least one reference signal resource, and the number of second layers is equal to the reference signal resource indicated by the second domain in the first signaling. quantity.

As an embodiment, the second field in the first signaling indicates a layer number, and the second layer number is equal to the layer number indicated by the second field in the first signaling.

As an embodiment, the second field in the first signaling indicates a precoder, and the number of layers corresponding to the precoder indicated by the second field in the first signaling is equal to the first Number of second floors.

As an embodiment, the second field in the first signaling indicates a precoder, and the number of columns of the precoder indicated by the second field in the first signaling is equal to the second Number of layers.

As an embodiment, the interpretation of the second domain in the first signaling is related to the first layer number.

As an embodiment, the meaning of the interpretation of the second domain in the first signaling in the sentence related to the first layer number includes: the first layer number is used to determine the first signal. Interpretation of the second domain in the order.

As an embodiment, the meaning of the sentence related to the interpretation of the second domain in the first signaling and the first layer number includes: the interpretation of the second domain in the first signaling Depends on the number of first layers.

As an embodiment, the interpretation of the second domain in the first signaling in the sentence and the meaning of the first layer include: interpretation of the second domain in the first signaling. Interpretation is based on having the same number of layers as the first number of layers.

As an embodiment, the interpretation of the second domain in the first signaling of the sentence and the meaning related to the first layer include: the second domain in the first signaling indicates The number of reference signal resources is equal to the number of first layers.

As an embodiment, the interpretation of the second domain in the first signaling of the sentence and the meaning related to the first layer include: the second domain in the first signaling indicates The number of layers corresponding to the precoder is equal to the number of first layers.

As an embodiment, the interpretation of the second domain in the first signaling of the sentence and the meaning related to the first layer include: the second domain in the first signaling indicates The number of columns of the precoder is equal to the number of first layers.

As an embodiment, the meaning of the interpretation of the second domain in the first signaling of the sentence related to the first layer number includes: the value of the second domain in the first signaling. Together with the first layer number, it is used to determine a reference signal resource group, and the number of reference signal resources included in the one reference signal resource group is equal to the first layer number.

As a sub-embodiment of the above embodiment, the one reference signal resource group is the second reference signal resource group.

As an embodiment, the meaning of the interpretation of the second domain in the first signaling of the sentence related to the first layer number includes: the value of the second domain in the first signaling. Together with the first layer number, it is used to determine a precoder.

As a sub-embodiment of the above embodiment, the second field in the first signaling indicates the TPMI of the one precoder, and the number of layers corresponding to the one precoder is equal to the first number of layers. .

As a sub-embodiment of the above embodiment, the one precoder is the second precoder in Embodiment 9.

As an embodiment, the number of layers of the first signal is equal to the number of DMRS ports included in the first DMRS port sequence.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the number of the first layer.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number.

As an embodiment, the first information is used to determine whether the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the first layer number and the second layer The sum of the numbers.

As an embodiment, the first signaling carries the first information.

As an embodiment, the first information is carried by higher layer signaling.

As an embodiment, the first information is carried by RRC signaling.

As an embodiment, the first information is carried by higher layer signaling and the first signaling.

As an embodiment, whether the second field in the first signaling indicates the second layer number is related to the first information.

As an embodiment, the first information is used to determine whether the second field in the first signaling indicates the second layer number.

As an embodiment, whether the first layer number is used to determine whether the interpretation of the second domain in the first signaling is related to the first information.

As an embodiment, the first information is used to determine whether the first layer number is used to determine the interpretation of the second domain in the first signaling.

As an embodiment, if the first layer number is not used to determine the interpretation of the second field in the first signaling, the value of the second field in the first signaling indicates the Describe the second level.

As an embodiment, whether the first layer number is used to determine whether the interpretation of the second domain in the first signaling and the number of DMRS ports included in the first DMRS port sequence is equal to the The number of the first layer is still related to the sum of the number of the first layer and the number of the second layer.

As an embodiment, if the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, the first layer number is used to determine the first layer in the first signaling. Interpretation of the second domain.

As an embodiment, if the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, the second layer in the first signaling The field indicates the second layer number.

As an embodiment, if the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, the first layer number is not used to determine the Interpretation of the second domain in the first signaling.

As an embodiment, whether the first layer number is used to determine whether the interpretation of the second domain in the first signaling has nothing to do with the first information.

As an embodiment, whether the first layer number is used to determine whether the interpretation of the second domain in the first signaling and the number of DMRS ports included in the first DMRS port sequence is equal to the It does not matter whether the number of the first layer is equal to the sum of the number of the first layer and the number of the second layer.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and the first layer number is used to determine the second layer in the first signaling. Interpretation of the domain.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and the first layer number is not used to determine the Interpretation of the second field in the first signaling.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and the first layer number is used to determine the first layer number. Interpretation of the second field in signaling.

As an embodiment, the first signaling indicates the first DMRS port sequence from a first DMRS port sequence table; the first domain in the first signaling is used to determine the first DMRS Port sequence list.

As an embodiment, the first field in the first signaling indicates the first layer number, and the first layer number is used to determine the first DMRS port sequence table.

As an embodiment, the second domain in the first signaling is not used to determine the first DMRS port sequence list.

As an embodiment, whether the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number, the first The second field in signaling is not used to determine the first DMRS port sequence list.

As an embodiment, the number of DMRS ports included in any DMRS port sequence in the first DMRS port sequence list is equal to the number of the first layer.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in Figure 2.

Figure 2 illustrates the network architecture 200 of LTE (Long-Term Evolution, long-term evolution), LTE-A (Long-Term Evolution Advanced, enhanced long-term evolution) and future 5G systems. The network architecture 200 of LTE, LTE-A and future 5G systems is called EPS (Evolved Packet System) 200. The 5G NR or LTE network architecture 200 can be called 5GS (5G System)/EPS (Evolved Packet System). Grouping System) 200 or some other suitable terminology. 5GS/EPS 200 may include one or more UE (User Equipment) 201, a UE 241 that communicates with the UE 201 on a side link, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G CoreNetwork (5G Core Network)/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server)/UDM (Unified Data Management) 220 and Internet Services 230. 5GS/EPS200 Interconnection with other access networks is possible, but these entities/interfaces are not shown for simplicity. As shown in Figure 2, 5GS/EPS200 provides packet switching services, however those skilled in the art will readily understand that the various concepts presented throughout this application are extensible to a network that provides circuit-switched services. NG-RAN 202 includes NR (New Radio) Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination towards UE 201. gNB 203 may connect to other gNBs 204 via the Xn interface (eg, backhaul). The gNB 203 may also be called a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmit Receive Point) or some other suitable terminology. gNB203 provides UE201 with an access point to 5GC/EPC210. Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players ( For example, MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network devices, machine type communications devices, land vehicles, cars, wearable devices, or any other similarly functional device. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, Mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client or some other suitable term. gNB203 is connected to 5GC/EPC210 through the S1/NG interface. 5GC/EPC210 includes MME (Mobility Management Entity, mobility management entity)/AMF (Authentication Management Field, authentication management domain)/SMF (Session Management Function, session management function) 211. Other MME/AMF/SMF214, S-GW (Service Gateway, Service Gateway)/UPF (User Plane Function, User Plane Function) 212 and P-GW (Packet Date Network Gateway, Packet Data Network Gateway)/UPF213. MME/AMF/SMF211 is the control node that handles signaling between UE201 and 5GC/EPC210. Basically MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW/UPF212, and S-GW/UPF212 itself is connected to P-GW/UPF213. P-GW provides UE IP address allocation and other functions. P-GW/UPF 213 is connected to Internet service 230. Internet services 230 include Internet protocol services corresponding to operators, which may specifically include Internet, intranet, IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) and packet switching (Packet switching) services.

As an embodiment, the first node in this application includes the UE201.

As an embodiment, the second node in this application includes the gNB203.

As an embodiment, the wireless link between the UE201 and the gNB203 includes a cellular network link.

As an embodiment, the sender of the first signaling includes the gNB203.

As an embodiment, the recipient of the first signaling includes the UE201.

As an embodiment, the sender of the first signal includes the UE201.

As an embodiment, the receiver of the first signal includes the gNB203.

As an embodiment, the UE 201 supports simultaneous multi-beam/panel/TRP UL transmission (simultaneous multi-beam/panel/TRP UL transmission).

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of the wireless protocol architecture of the user plane and control plane according to an embodiment of the present application, as shown in FIG. 3 .

Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in FIG. 3 . Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for user plane 350 and control plane 300, Figure 3 shows with three layers for a first communication node device (UE, gNB or RSU in V2X) and a second Radio protocol architecture of the control plane 300 between communication node devices (gNB, UE or RSU in V2X), or between two UEs: Layer 1, Layer 2 and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be called PHY301 in this article. Layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for the link between the first communication node device and the second communication node device, or between two UEs. L2 layer 305 includes MAC (Medium Access Control, media access control) sublayer 302, RLC (Radio Link Control, wireless link layer control protocol) sublayer 303 and PDCP (Packet Data Convergence Protocol, packet data convergence protocol) sublayer 304. These sub-layers terminate at the second communication node device. PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides handoff support for a first communication node device between second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (eg, resource blocks) in a cell among first communication node devices. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control, radio resource control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e. radio bearer) and the lower layers are configured using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 for the physical layer 351, L2 The PDCP sublayer 354 in the layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 are generally the same as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 is also Provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol, Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for the mapping between QoS flows and data radio bearers (DRB, Data Radio Bearer). , to support business diversity. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (eg, IP layer) terminating at the P-GW on the network side and another terminating at the connection. The application layer at one end (e.g., remote UE, server, etc.).

As an embodiment, the wireless protocol architecture in Figure 3 is applicable to the first node in this application.

As an embodiment, the wireless protocol architecture in Figure 3 is applicable to the second node in this application.

As an embodiment, the first signaling is generated in the PHY301 or the PHY351.

As an embodiment, the first signaling is generated in the MAC sublayer 302 or the MAC sublayer 352.

As an embodiment, the first signal is generated from the PHY301 or the PHY351.

As an embodiment, the higher layer in this application refers to the layer above the physical layer.

Example 4

Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in FIG. 4 . Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in the access network.

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

The second communication device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454 and antenna 452.

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

In transmission from the first communications device 410 to the second communications device 450 , each receiver 454 receives the signal via its respective antenna 452 at the second communications device 450 . Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456 . The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions of the L1 layer. Multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream after the received analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, where the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 with the second Any parallel flow to which communication device 450 is the destination. The symbols on each parallel stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communications device 410 on the physical channel. Upper layer data and control signals are then provided to controller/processor 459. Controller/processor 459 implements the functions of the L2 layer. Controller/Processing Memory 459 may be associated with memory 460 that stores program code and data. Memory 460 may be referred to as computer-readable media. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. Controller/processor 459 is also responsible for error detection using acknowledgment (ACK) and/or negative acknowledgment (NACK) protocols to support HARQ operations.

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

In the transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to that in the transmission from the first communication device 410 to the second communication device 450. The reception function at the second communication device 450 is described in the transmission. 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 multi-antenna receive processor 472 and receive processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the functions of the L1 layer. Controller/processor 475 implements L2 layer functions. Controller/processor 475 may be associated with memory 476 that stores program code and data. Memory 476 may be referred to as computer-readable media. The controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the second communications device 450 . Upper layer packets from controller/processor 475 may be provided to the core network. Controller/processor 475 is also responsible for error detection using ACK and/or NACK protocols to support HARQ operations.

As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to interact with the At least one processor is used together. The second communication device 450 receives at least the first signaling; sends the first signal.

As an embodiment, the second communication device 450 includes: a memory that stores a program of computer-readable instructions that, when executed by at least one processor, generates actions, and the actions include: receiving The first signaling; sending the first signal.

As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to interact with the At least one processor is used together. The first communication device 410 at least sends the first signaling; receives the first signal.

As one embodiment, the first communication device 410 includes: a memory that stores a program of computer-readable instructions that, when executed by at least one processor, generates actions, and the actions include: sending the The first signaling; receiving the first signal.

As an embodiment, the first node in this application includes the second communication device 450.

As an embodiment, the second node in this application includes the first communication device 410 .

As an embodiment, {the antenna 452, the receiver 454, the reception processor 456, the multi-antenna reception processor 458, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to receive the first signaling; {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller /Processor 475, at least one of the memories 476} is used to send the first signaling.

As an embodiment, at least one of {the antenna 420, the receiver 418, the reception processor 470, the multi-antenna reception processor 472, the controller/processor 475, and the memory 476} One is used to receive the first signal; {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the The memory 460, at least one of the data sources 467} is used to send the first signal.

Example 5

Embodiment 5 illustrates a flow chart of transmission according to an embodiment of the present application; as shown in Figure 5. In Figure 5, the second node U1 and the first node U2 are communication nodes transmitting through the air interface.

For the second node U1, the first signaling is sent in step S511; the first signal is received in step S512.

For the first node U2, the first signaling is received in step S521; the first signal is sent in step S522.

In Embodiment 5, the first signaling is used by the first node U2 to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first The first field in the signaling and the second field in the first signaling are used by the first node U2 to determine the antenna port to send the first signal, or the first signal The first field in the signaling and the second field in the first signaling are used by the first node U2 to determine the precoder of the first signal; the first signaling indicates the At least the first number of layers or the second number of layers; the first field in the first signaling indicates the first number of layers; the third number in the first signaling The second domain indicates the second layer number, or the interpretation of the second domain in the first signaling is related to the first layer number; the first signaling indicates the first DMRS port sequence, so The first DMRS port sequence includes at least one DMRS port; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number; Whether the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number is related to the first information.

As an embodiment, the first node U2 is the first node in this application.

As an embodiment, the second node U1 is the second node in this application.

As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between the base station equipment and the user equipment.

As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between the relay node device and the user equipment.

As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between user equipment and user equipment.

As an embodiment, the second node U1 is the serving cell maintenance base station of the first node U2.

As an embodiment, the first signaling is transmitted in a downlink physical layer control channel (that is, a downlink channel that can only be used to carry physical layer signaling).

As an embodiment, the first signaling is transmitted in PDCCH (Physical Downlink Control Channel).

As an embodiment, the first signaling is transmitted on a downlink physical layer data channel (ie, a downlink channel that can be used to carry physical layer data).

As an embodiment, the first signaling is transmitted in PDSCH (Physical Downlink Shared Channel).

As an embodiment, the first signal is transmitted in an uplink physical layer data channel (that is, an uplink channel that can be used to carry physical layer data).

As an embodiment, the first signal is transmitted in PUSCH (Physical Uplink Shared CHannel, Physical Uplink Shared Channel).

Example 6

Embodiment 6 illustrates a schematic diagram of whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information according to an embodiment of the present application; as shown in FIG. 6 . In Embodiment 6, the first signaling indicates the first DMRS port sequence from the first DMRS port sequence table; the first domain in the first signaling is used by the first node Used to determine the first DMRS port sequence list, whether the second domain in the first signaling is used by the first node to determine that the first DMRS port sequence list is related to the first information .

As an embodiment, the first DMRS port sequence list includes multiple DMRS port sequences, and any DMRS port sequence in the first DMRS port sequence list includes at least one DMRS port.

As an embodiment, the first signaling indicates the index of the first DMRS port sequence in the first DMRS port sequence table. lead.

As an embodiment, the first bit group in the first signaling indicates an index of the first DMRS port sequence in the first DMRS port sequence table.

As an embodiment, the first DMRS port sequence table includes multiple rows, each row of the multiple rows includes a DMRS port sequence, and the first signaling indicates the row in which the first DMRS port sequence is located. Index in the first DMRS port sequence list.

As an embodiment, the first DMRS port sequence list is one of M candidate DMRS port sequence lists, and M is a positive integer greater than 1.

As an embodiment, the M candidate DMRS port sequence lists include Table 7.3.1.1.2-6-Table 7.3.1.1.2-23, Table 7.3.1.1.2-6A and Table 7.3.1.1 in TS 38.212 .2-7A.

As an embodiment, the second domain in the first signaling is used to determine the first DMRS port sequence list.

As an embodiment, the first information is used by the first node to determine whether the second field in the first signaling is used to determine the first DMRS port sequence list.

As an embodiment, the first field in the first signaling indicates the first layer number, and the first layer number is used to determine the first layer from the M candidate DMRS port sequence lists. A DMRS port sequence list.

As an embodiment, the second domain in the first signaling is not used to determine the first DMRS port sequence table, and any DMRS port sequence in the first DMRS port sequence table includes DMRS The number of ports is equal to the first layer number.

As an embodiment, there is one DMRS port sequence among the M candidate DMRS port sequence lists. The number of DMRS ports included in any DMRS port sequence in the candidate DMRS port sequence list is not equal to the first layer number.

As an embodiment, the second domain in the first signaling is not used to determine the first DMRS port sequence table, and any DMRS port sequence in the first DMRS port sequence table includes DMRS The number of ports is equal to the first layer number multiplied by 2.

As an embodiment, there is one DMRS port sequence in the M candidate DMRS port sequence lists. The number of DMRS ports included in any DMRS port sequence in the candidate DMRS port sequence list is not equal to the product of the first layer number and 2.

As an embodiment, the second domain in the first signaling is used to determine the first DMRS port sequence table, and the second domain in the first signaling indicates the second layer number, and the second layer number is used to determine the first DMRS port sequence list.

As a sub-embodiment of the above embodiment, the first layer number and the second layer number are jointly used to determine the first DMRS port sequence table.

As a sub-embodiment of the above embodiment, the first layer number and the second layer number are jointly used to determine the first DMRS port sequence list from the M candidate DMRS port sequence lists.

As a sub-embodiment of the above embodiment, the sum of the first layer number and the second layer number is used to determine the first DMRS port sequence table.

As a sub-embodiment of the above embodiment, the sum of the first layer number and the second layer number is used to determine the first DMRS port sequence list from the M candidate DMRS port sequence lists.

As an embodiment, the second domain in the first signaling is used to determine the first DMRS port sequence list, and any DMRS port sequence in the first DMRS port sequence list includes a DMRS port The number is equal to the sum of the first layer number and the second layer number.

As an embodiment, there is one candidate DMRS port sequence list among the M candidate DMRS port sequence lists. The number of DMRS ports included in any DMRS port sequence in the candidate DMRS port sequence list is not equal to the number of the first layer and the second layer number. and.

As an embodiment, the second domain in the first signaling is used to determine whether the first DMRS port sequence table and the number of DMRS ports included in the first DMRS port sequence are equal to the The number of the first layer is still related to the sum of the number of the first layer and the number of the second layer.

As an embodiment, if the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, The second field in the first signaling is not used to determine the first DMRS port sequence list.

As an embodiment, if the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, the second layer in the first signaling The field is used to determine the first DMRS port sequence list.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and the number of DMRS ports included in any DMRS port sequence in the first DMRS port sequence table is equal to The first layer number.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and any DMRS port in the first DMRS port sequence list The number of DMRS ports included in the port sequence is equal to the sum of the first layer number and the second layer number.

Example 7

Embodiment 7 illustrates a schematic diagram in which the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal according to an embodiment of the present application; as shown in FIG. 7 .

As an embodiment, the first reference signal resource group and the second reference signal resource group are jointly used by the first node to determine the antenna port for transmitting the first signal.

As an embodiment, the meaning of the sentence being used to determine the antenna port that sends the first signal includes: being used to determine the spatial filter that sends the first signal.

As an embodiment, any reference signal resource in the first reference signal resource group includes an SRS resource.

As an embodiment, any reference signal resource in the second reference signal resource group includes an SRS resource.

As an embodiment, any reference signal resource in the first reference signal resource group is an SRS resource.

As an embodiment, any reference signal resource in the second reference signal resource group is an SRS resource.

As an embodiment, any reference signal resource in the first reference signal resource group includes at least one SRS port, and any reference signal resource in the second reference signal resource group includes at least one SRS port.

As an embodiment, any reference signal resource in the first reference signal resource group is identified by an SRS-ResourceId, and any reference signal resource in the second reference signal resource group is identified by an SRS-ResourceId.

As an embodiment, the first signaling indicates the SRI of each reference signal resource in the first reference signal resource group, and the first signaling indicates each reference signal resource in the second reference signal resource group. SRI.

As an embodiment, the first reference signal resource group and the second reference signal resource group respectively correspond to different TCI states.

As an embodiment, the first signaling indicates the first reference signal resource group in the first reference signal resource set, and the first signaling indicates the first reference signal resource set in the second reference signal resource set. The second reference signal resource group.

As an embodiment, the first reference signal resource set and the second reference signal resource set each include at least one reference signal resource.

As an embodiment, the first reference signal resource set includes an SRS resource set (SRS resource set).

As an embodiment, the second reference signal resource set includes an SRS resource set.

As an embodiment, the first reference signal resource set is an SRS resource set.

As an embodiment, the second reference signal resource set is an SRS resource set.

As an embodiment, the first reference signal resource set and the second reference signal resource set are respectively identified by two different SRS-ResourceSetIds.

As an embodiment, the first reference signal resource set and the second reference signal resource set are configured by a fourth higher-layer parameter, and the name of the fourth higher-layer parameter includes "srs-ResourceSetToAddModList".

As an embodiment, the higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "nonCodebook" or both are set to "codebook".

As an embodiment, any reference signal resource in the first reference signal resource set includes at least one SRS port, and any reference signal resource in the second reference signal resource set includes at least one SRS port.

As an embodiment, the second information indicates that the first domain in the first signaling is associated with the first reference signal resource set, and indicates that the second domain in the first signaling and The second reference signal resource set is associated.

As an embodiment, the meaning of the sentence that a domain in the first signaling is associated with a reference signal resource set includes: the first The reference signal resources indicated by the one field in a signaling belong to the one reference signal resource set.

As an embodiment, the meaning of the sentence that one domain in the first signaling is associated with a reference signal resource set includes: the one domain in the first signaling is indicated from the one reference signal resource set. At least one reference signal resource.

As an embodiment, the meaning of the sentence that a domain in the first signaling is associated with a reference signal resource set includes: the precoder indicated by the one domain in the first signaling is applied to the corresponding At least one layer of a reference signal resource in a reference signal resource set.

As an embodiment, the meaning of the sentence that a field in the first signaling is associated with a reference signal resource set includes: at least one layer is precoded by a precoder indicated by the one field in the first signaling. After coding, it is mapped to the same antenna port as the SRS port of one reference signal resource in the one reference signal resource set.

As a sub-embodiment of the above embodiment, the one field in the first signaling indicates the TPMI of the precoder.

As an embodiment, the second information is carried by the first signaling.

As an embodiment, the second information is carried by the fifth field in the first signaling, and the fifth field includes the DCI field SRS resource set indicator.

As an embodiment, the second information is carried by another DCI different from the first signaling.

As an embodiment, the second information is carried by higher layer signaling.

As an embodiment, the first signal is sent by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group, and the first signal is sent by the same SRS port as the reference signal resource in the second reference signal resource group. The reference signal resource is transmitted on the same antenna port as the SRS port.

As an embodiment, any layer of the first signal is used in the same time-frequency resource by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group and the same antenna port as the second reference signal resource. The antenna ports with the same SRS ports of the reference signal resources in the signal resource group are transmitted simultaneously.

As an embodiment, any layer of the first signal is transmitted in the first RE (Resource Element) set by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group. The two RE sets are transmitted by the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As an embodiment, any layer of the first signal is transmitted by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group, or is transmitted by the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group. The reference signal resource is transmitted on the same antenna port as the SRS port.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the number of first layers, and any layer of the first signal is combined with the first layer in the same time-frequency resource. The same antenna port as the SRS port of the reference signal resource in the reference signal resource group and the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group are simultaneously transmitted.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the number of first layers, and any layer of the first signal is combined with the first layer in the same time-frequency resource. The same spatial filter as the reference signal resource in the reference signal resource group and the same spatial filter as the reference signal resource in the second reference signal resource group are sent simultaneously.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any layer of the first signal is summed with the first reference in the first RE set. The SRS port of the reference signal resource in the signal resource group is transmitted through the same antenna port, and is transmitted in the second RE set through the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any layer of the first signal is summed with the first reference in the first RE set. The reference signal resources in the signal resource group are transmitted using the same spatial domain filter, and are transmitted in the second RE set using the same spatial domain filter as the reference signal resources in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any DMRS port in the first DMRS port sequence is summed in the same time-frequency resource. The same antenna port as the SRS port of the reference signal resource in the first reference signal resource group and the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group are simultaneously transmitted.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any DMRS port in the first DMRS port sequence is summed in the same time-frequency resource. The reference signal in the first reference signal resource group The spatial domain filter with the same number resource and the spatial domain filter with the same reference signal resource in the second reference signal resource group are sent at the same time.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any DMRS port in the first DMRS port sequence is summed in the first RE set. The SRS port of the reference signal resource in the first reference signal resource group is transmitted through the same antenna port, and the second RE set is transmitted through the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group. .

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, and any DMRS port in the first DMRS port sequence is summed in the first RE set. The reference signal resources in the first reference signal resource group are transmitted using the same spatial domain filter, and the second RE set is transmitted using the same spatial domain filter as the reference signal resources in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and any layer of the first signal is summed with the The reference signal resources in the first reference signal resource group are transmitted through the same SRS port as the SRS port, or are transmitted through the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and any layer of the first signal is summed with the The reference signal resources in the first reference signal resource group are transmitted through the same spatial filter, or are transmitted through the same spatial filter as the reference signal resources in the second reference signal resource group.

As an embodiment, all layers of the first signal occupy overlapping time-frequency resources.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and any DMRS port in the first DMRS port sequence is transmitted by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group, or is transmitted by the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, and any DMRS port in the first DMRS port sequence is sent by the same spatial filter as the reference signal resource in the first reference signal resource group, or is sent by the same spatial filter as the reference signal resource in the second reference signal resource group.

As an embodiment, the first DMRS port group is composed of all DMRS ports in the first DMRS port sequence that are transmitted by the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group, and the second The DMRS port group consists of all DMRS ports in the first DMRS port sequence that are transmitted by the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group; All DMRS ports belong to the same CDM group (CDM group), and all DMRS ports in the second DMRS port group belong to the same CDM group; the first DMRS port group and the second DMRS port group belong to different CDMs Group.

As an embodiment, the first DMRS port group is composed of all DMRS ports in the first DMRS port sequence that are sent by the same air domain filter as the reference signal resources in the first reference signal resource group, and the second DMRS port The group consists of all DMRS ports in the first DMRS port sequence that are sent by the same air domain filter as the reference signal resources in the second reference signal resource group; all DMRS ports in the first DMRS port group belong to In the same CDM group, all DMRS ports in the second DMRS port group belong to the same CDM group; the first DMRS port group and the second DMRS port group belong to different CDM groups.

As an embodiment, the first RE set and the second RE set each include multiple REs.

As an embodiment, the first RE set and the second RE set are orthogonal in the time domain.

As an embodiment, the first RE set and the second RE set are orthogonal in the frequency domain.

Example 8

Embodiment 8 illustrates a schematic diagram of the first domain and the second domain in the first signaling according to an embodiment of the present application; as shown in FIG. 8 . In Embodiment 8, the first domain in the first signaling indicates the first reference signal resource group, and the second domain in the first signaling indicates the second reference signal resource. group; the number of reference signal resources included in the first reference signal resource group is equal to the first number of layers, and the number of reference signal resources included in the second reference signal resource group is equal to the second number of layers; The higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "nonCodebook"; The number of SRS ports included in any reference signal resource in the first reference signal resource group is equal to 1, and the number of SRS ports included in any reference signal resource in the second reference signal resource group is equal to 1.

As an example, the higher level parameter "txConfig" is set to "nonCodebook".

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number; the first signal includes v layers, and v is equal to the first layer number; The v layers are precoded by the unit array and mapped to the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group. The v layers are precoded by the unit array and mapped to and The SRS ports of the reference signal resources in the second reference signal resource group are the same antenna ports.

As a sub-embodiment of the above embodiment, the v layers are precoded by the unit matrix and mapped to the same SRS port as the reference signal resource in the first reference signal resource group in the same time-frequency resource. The antenna port and the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As a sub-embodiment of the above embodiment, the v layers are precoded by the unit array and mapped to the same SRS port of the reference signal resource in the first reference signal resource group in the first RE set. The port is mapped in the second RE set to the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number; DMRS on the DMRS ports in the first DMRS port sequence are mapped after being precoded by a unit matrix to the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group, and the DMRS on the DMRS port in the first DMRS port sequence is mapped to the first DMRS port after being precoded by the unit array. The SRS ports of the reference signal resources in the two reference signal resource groups are the same antenna ports.

As a sub-embodiment of the above embodiment, the DMRS on the DMRS port in the first DMRS port sequence is precoded by the unit array and mapped to the first reference signal resource group in the same time-frequency resource. The same antenna port as the SRS port of the reference signal resource and the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group.

As a sub-embodiment of the above embodiment, the DMRS on the DMRS port in the first DMRS port sequence is precoded by the unit matrix and mapped to the first reference signal resource group in the first RE set. The antenna port with the same SRS port of the reference signal resource is mapped to the same antenna port with the SRS port of the reference signal resource in the second reference signal resource group in the second RE set.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number; the first signal includes v layers, and the v Equal to the sum of v1 and v2, the v1 is equal to the first layer number, and the v2 is equal to the second layer number; v1 layers among the v layers are precoded by the unit matrix and mapped to the sum of The SRS ports of the reference signal resources in the first reference signal resource group are the same antenna ports, and v2 layers among the v layers are precoded by unit arrays and mapped to the same SRS port as those in the second reference signal resource group. The SRS port of the reference signal resource is the same antenna port.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number; the first DMRS port sequence includes a first DMRS port group and a second DMRS port group, the first DMRS port group includes a number of DMRS ports equal to the first layer number, and the second DMRS port group includes a number of DMRS ports equal to the second layer number; The DMRS on the DMRS port in the first DMRS port group is mapped to the same antenna port as the SRS port of the reference signal resource in the first reference signal resource group after being precoded by the unit array, and the second DMRS port The DMRS on the DMRS port in the group is mapped to the same antenna port as the SRS port of the reference signal resource in the second reference signal resource group after being precoded by the unit matrix.

Example 9

Embodiment 9 illustrates a schematic diagram of the first domain and the second domain in the first signaling according to an embodiment of the present application; as shown in Figure 9. In Embodiment 9, the first domain in the first signaling indicates a first TPMI, and the second domain in the first signaling indicates a second TPMI; the first TPMI is used The first precoder is determined, and the second TPMI is used to determine the second precoder; the number of layers corresponding to the first precoder is equal to the number of first layers, and the number of layers corresponding to the second precoder is The number of layers is equal to the second number of layers; the first precoder and the second precoder are applied to the first signal; the higher layer parameter "usage" associated with the first reference signal resource set Higher layer parameters "usage" associated with the second reference signal resource set are all set to "codebook".

As an example, the higher level parameter "txConfig" is set to "codebook".

As an embodiment, the first field in the first signaling indicates the first layer number and the first TPMI.

As an embodiment, the first layer number and the first TPM are jointly used to determine the first precoder.

As an embodiment, the first layer number and the second TPM are jointly used to determine the second precoder, or the second domain in the first signaling indicates the second The number of layers, the second number of layers and the second TPM are jointly used to determine the second precoder.

As an embodiment, the first precoder and the second precoder are respectively a precoding matrix.

As an embodiment, the number of columns of the first precoder is equal to 1 or greater than 1, and the number of columns of the second precoder is equal to 1 or greater than 1.

As an embodiment, the number of columns of the first precoder is equal to the number of the first layer, and the number of columns of the second precoder is equal to the number of the second layer.

As an embodiment, the first reference signal resource group includes only one reference signal resource, and the one reference signal resource included in the first reference signal resource group is a first reference signal resource; the second reference signal resource group only includes one reference signal resource, and one reference signal resource included in the first reference signal resource group is a second reference signal resource; the first signaling includes a third domain and a fourth domain, and the The third domain indicates the first reference signal resource from the first reference signal resource set, and the fourth domain in the first signaling indicates the first reference signal resource set from the second reference signal resource set. Second reference signal resource.

As an embodiment, the first reference signal resource and the second reference signal resource are each an SRS resource.

As an embodiment, the first reference signal resource and the second reference signal resource are each identified by an SRS-ResourceId.

As an embodiment, the first reference signal resource and the second reference signal resource each include at least one SRS port.

As an embodiment, the number of SRS ports included in the first reference signal resource is equal to the number of SRS ports included in the second reference signal resource.

As an embodiment, the number of SRS ports included in the first reference signal resource is not equal to the number of SRS ports included in the second reference signal resource.

As an embodiment, the number of rows of the first precoder is equal to the number of SRS ports of the first reference signal resource; the number of rows of the second precoder is equal to the number of SRS ports of the second reference signal resource. quantity.

As an embodiment, when the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number, the number of SRS ports included in the first reference signal resource is equal to the second reference signal The number of SRS ports included in the resource.

As an embodiment, when the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number, the SRS ports included in the first reference signal resource The number is equal to or not equal to the number of SRS ports included in the second reference signal resource.

As an embodiment, the third domain includes DCI domain SRS resource indicator.

As an embodiment, the third domain includes the first SRS resource indicator domain in the DCI.

As an embodiment, the fourth domain includes DCI domain Second SRS resource indicator.

As an embodiment, the fourth domain includes information in the DCI domain Second SRS resource indicator.

As an embodiment, the fourth domain includes the second SRS resource indicator domain in the DCI.

As an embodiment, the third domain is located before the fourth domain in the first signaling.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number; the first signal includes v layers, and v is equal to the first layer number; The v layers are precoded by the first precoder and mapped to the same antenna port as the SRS port of the first reference signal resource, and the v layers are precoded by the second precoder. is mapped to the same antenna port as the SRS port of the second reference signal resource.

As a sub-embodiment of the above embodiment, the v layers are precoded by the first precoder in the same time-frequency resource and mapped to the same antenna as the SRS port of the first reference signal resource. port, and is mapped to the same antenna port as the SRS port of the second reference signal resource after being precoded by the second precoder.

As a sub-embodiment of the above embodiment, the v layers are mapped to the same antenna port as the SRS port of the first reference signal resource after being precoded by the first precoder in the first RE set. , after being precoded by the second precoder in the second RE set, is mapped to the same antenna port as the SRS port of the second reference signal resource.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number; DMRS on the DMRS ports in the first DMRS port sequence is used by the first precoder After precoding, it is mapped to the same antenna port as the SRS port of the first reference signal resource, and the DMRS on the DMRS port in the first DMRS port sequence is used by the second After precoding by the precoder, the precoded signal is mapped to the same antenna port as the SRS port of the second reference signal resource.

As a sub-embodiment of the above embodiment, the DMRS on the DMRS port in the first DMRS port sequence is mapped to the first DMRS port after being precoded by the first precoder in the same time-frequency resource. The SRS port of the reference signal resource is the same antenna port, and is mapped to the same antenna port as the SRS port of the second reference signal resource after being precoded by the second precoder.

As a sub-embodiment of the above embodiment, the DMRS on the DMRS port in the first DMRS port sequence is mapped to and the first reference after being precoded by the first precoder in the first RE set. The antenna port with the same SRS port of the signal resource is mapped to the same antenna port with the SRS port of the second reference signal resource after being precoded by the second precoder in the second RE set.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number; the first signal includes v layers, and the v Equal to the sum of v1 and v2, the v1 is equal to the first layer number, and the v2 is equal to the second layer number; after v1 layers among the v layers are precoded by the first precoder is mapped to the same antenna port as the SRS port of the first reference signal resource, and v2 layers among the v layers are precoded by the second precoder and mapped to the second reference signal The resource's SRS port is the same as the antenna port.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number; the first DMRS port sequence includes a first DMRS port group and a second DMRS port group, the number of DMRS ports in the first DMRS port group is equal to the first layer number, and the number of DMRS ports included in the second DMRS port group is equal to the second layer number; The DMRS on the DMRS port in the first DMRS port group is precoded by the first precoder and then mapped to the same antenna port as the SRS port of the first reference signal resource. The DMRS in the second DMRS port group The DMRS on the DMRS port is precoded by the second precoder and then mapped to the same antenna port as the SRS port of the second reference signal resource.

Example 10

Embodiment 10 illustrates the mapping of the first signal to the antenna port and the mapping of the DMRS port to the antenna port in the first DMRS port sequence according to an embodiment of the present application; as shown in FIG. 10 . In Embodiment 10, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number; the second layer number is equal to the first layer number; and the first signal includes v layers, the v is equal to the first layer number; the v layers are mapped to the first antenna port group after being precoded by W ₀ , and the v layers are mapped to the second antenna port group after being precoded by W ₁ Antenna port group, the W ₀ and the W ₁ are respectively a precoder; the number of antenna ports included in the first antenna port group and the number of antenna ports included in the second antenna port group are both equal to ρ , the ρ is a positive integer greater than 1; the first DMRS port sequence includes v DMRS ports, and the DMRS on the v DMRS ports are mapped to the first antenna port after being precoded by W ₀ group, the DMRS on the v DMRS ports are mapped to the second antenna port group after being precoded by W ₁ .

In Figure 10, the are respectively the ρ antenna ports in the first antenna port group, and the are respectively the ρ antenna ports in the second antenna port group, and the y ⁽⁰⁾ (i),..., y ^(v-1) (i) are the v layers respectively; the M is each The number of modulation symbols in a layer; are the v DMRS ports respectively; the μ is the subcarrier spacing configuration, the k and the l are the subcarrier index and the OFDM symbol index respectively; the β ₀ and the β ₁ are the amplitude scaling factors respectively (amplitude scaling factor).

As an example, the z ^(p) (i), the and stated For the definition, please refer to 3GPP TS38.211, where or

As an example, the definitions of μ, k, and l can be found in 3GPP TS38.211.

As an embodiment, the higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "nonCodebook"; the ρ is equal to The v; the first domain in the first signaling indicates the first reference signal resource group, and the second domain in the first signaling indicates the second reference signal resource group, The number of reference signal resources included in the first reference signal resource group is equal to the rho, and the number of reference signal resources included in the second reference signal resource group is equal to the rho; any one of the first reference signal resource group A reference signal resource only includes one SRS port, and any reference signal resource in the second reference signal resource group only includes one SRS port; the p antenna ports in the first antenna port group are respectively the The SRS ports of the p reference signal resources in the first reference signal resource group are the same antenna ports, and all the SRS ports in the second antenna port group are the same. The p antenna ports are respectively the same antenna ports as the SRS ports of the p reference signal resources in the second reference signal resource group; the W ₀ and the W ₁ are unit arrays respectively.

As an embodiment, the higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "codebook"; the first The first field in the signaling indicates the W ₀ , the second field in the first signaling indicates the W ₁ , the column number of the W ₀ is equal to the v, and the W ₁ The number of columns is equal to v; the third field in the first signaling indicates the first reference signal resource, and the fourth field in the first signaling indicates the second reference signal resources, the number of SRS ports included in the first reference signal resource is equal to the ρ, the number of SRS ports included in the second reference signal resource is equal to the ρ; the ρ in the first antenna port group The antenna ports are respectively the same antenna ports as the p SRS ports of the first reference signal resource, and the p antenna ports in the second antenna port group are respectively the same as the p SRS ports of the second reference signal resource. The same antenna port as the SRS port.

As a sub-embodiment of the above embodiment, the W ₀ and the W ₁ are respectively the first precoder and the second precoder in Embodiment 9.

As an embodiment, the v layers are mapped to the first antenna port group after being precoded by W ₀ in the same time-frequency resource, and are mapped to the first antenna port group after being precoded by W ₁ The second antenna port group; DMRS on the v DMRS ports are mapped to the first antenna port group after being precoded by W ₀ in the same time-frequency resource, and after being precoded by W ₁ is mapped to the second antenna port group.

As an embodiment, the v layers are mapped to the first antenna port group after being precoded by W ₀ in the first RE set, and are mapped to the first antenna port group after being precoded by W ₁ in the second RE set. Map to the second antenna port group; DMRS on the v DMRS ports are mapped to the first antenna port group after being precoded by W ₀ in the first RE set, and in the second RE set After being precoded by the W ₁ , it is mapped to the second antenna port group.

Example 11

Embodiment 11 illustrates the mapping of a first signal to an antenna port according to an embodiment of the present application, and a schematic diagram of the mapping of a DMRS port to an antenna port in a first DMRS port sequence; as shown in FIG. 11 . In Embodiment 11, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number; the first signal includes v layers, and the v is equal to the sum of v1 and v2, the v1 is equal to the first layer number, and the v2 is equal to the second layer number; v1 layer among the v layers is mapped to the first layer after being precoded by W ₀ An antenna port group, v2 layers among the v layers are mapped to a second antenna port group after being precoded by W ₁ ; the number of antenna ports included in the first antenna port group is equal to ρ0, and the second antenna port group is The number of antenna ports included in the antenna port group is equal to ρ1, and the ρ0 and the ρ1 are respectively positive integers; the first DMRS port sequence includes a first DMRS port group and a second DMRS port group, and the first DMRS port group Including v1 DMRS ports, the second DMRS port group includes v2 DMRS ports; DMRS on the v1 DMRS ports are mapped to the first antenna port group after being precoded by W ₀ , and the v2 DMRS on one DMRS port is precoded by W ₁ and then mapped to the second antenna port group; W ₀ and W ₁ are respectively a precoder.

In Figure 11, the are respectively ρ0 antenna ports in the first antenna port group, and the are respectively the ρ1 antenna ports in the second antenna port group; are the v1 layers, the are the v2 layers respectively; the M is the number of modulation symbols of each layer; They are the v1 DMRS ports respectively, are the v2 DMRS ports respectively; the μ is the subcarrier spacing configuration, the k and the l are the subcarrier index and the OFDM symbol index respectively; the β ₀ and the β ₁ are the amplitude scaling factors respectively (amplitude scaling factor).

As an example, the z ^(p) (i), the and stated For the definition, please refer to 3GPP TS38.211, where or or

As an example, the definitions of μ, k, and l can be found in 3GPP TS38.211.

As an embodiment, the higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "nonCodebook"; the p0 is equal to The v1, the ρ1 is equal to the v2; the first domain in the first signaling indicates the first reference signal resource group, and the second domain in the first signaling indicates the second reference letter resource group, the number of reference signal resources included in the first reference signal resource group is equal to the p0, and the number of reference signal resources included in the second reference signal resource group is equal to the p1; the first reference signal Any reference signal resource in the resource group only includes one SRS port, and any reference signal resource in the second reference signal resource group only includes one SRS port; the ρ0 antenna ports in the first antenna port group respectively are the same antenna ports as the SRS ports of the ρ0 reference signal resources in the first reference signal resource group, and the ρ1 antenna ports in the second antenna port group are respectively the same as the SRS ports of the second reference signal resources. The SRS ports of the ρ1 reference signal resources in the group are the same antenna ports; the W ₀ and the W ₁ are unit arrays respectively.

As an embodiment, the higher-layer parameter "usage" associated with the first reference signal resource set and the higher-layer parameter "usage" associated with the second reference signal resource set are both set to "codebook"; the first The first field in the signaling indicates the W ₀ , the second field in the first signaling indicates the W ₁ , the column number of the W ₀ is equal to the v1, and the W ₁ The number of columns is equal to v2; the third field in the first signaling indicates the first reference signal resource, and the fourth field in the first signaling indicates the second reference signal resources, the number of SRS ports included in the first reference signal resource is equal to the p0, and the number of SRS ports included in the second reference signal resource is equal to the p1; the p0 in the first antenna port group The antenna ports are respectively the same antenna ports as the ρ0 SRS ports of the first reference signal resource, and the ρ1 antenna ports in the second antenna port group are respectively the same as ρ1 of the second reference signal resource. The same antenna port as the SRS port.

As an embodiment, all DMRS ports in the first DMRS port group belong to the same CDM group (CDM group), and all DMRS ports in the second DMRS port subgroup belong to the same CDM group; the first The DMRS port subgroup and the second DMRS port subgroup belong to different CDM groups.

As an embodiment, the number of layers of the first signal is equal to the sum of v1 and v2.

Example 12

Embodiment 12 illustrates a schematic diagram in which the first information includes the number of PTRS ports associated with the first DMRS port sequence according to an embodiment of the present application; as shown in FIG. 12 .

As an example, the PTRS refers to: Phase-tracking reference signal.

As an embodiment, the PTRS port associated with the first DMRS port sequence is the PTRS port of the first signal.

As an embodiment, the PTRS of the first signal is transmitted on the PTRS port associated with the first DMRS port sequence.

As an embodiment, the PTRS port associated with the first DMRS port sequence is a PTRS port carrying the PUSCH of the first signal.

As an embodiment, the PTRS of the PUSCH carrying the first signal is transmitted on the PTRS port associated with the first DMRS port sequence.

As an embodiment, the number of PTRS ports associated with the first DMRS port sequence is equal to 1 or 2.

As an embodiment, the number of PTRS ports associated with the first DMRS port sequence is equal to 1.

As an embodiment, the number of PTRS ports associated with the first DMRS port sequence is equal to 2.

As an embodiment, the PTRS port associated with the first DMRS port sequence refers to: the PTRS port associated with the DMRS port in the first DMRS port sequence.

As an embodiment, the PTRS port associated with the first DMRS port sequence includes the PTRS port associated with each DMRS port in the first DMRS port sequence.

As an embodiment, each DMRS port in the first DMRS port sequence is associated with only one PTRS port or no PTRS port.

As an embodiment, the PTRS port associated with the first DMRS port sequence includes a PTRS port associated with each DMRS port associated with a PTRS in the first DMRS port sequence.

As an embodiment, at least one DMRS port in the first DMRS port sequence is associated with one PTRS port.

As an embodiment, each DMRS port in the first DMRS port sequence is associated with a PTRS port.

As an embodiment, at least one DMRS port in the first DMRS port sequence is not associated with a PTRS port.

As an embodiment, the first DMRS port sequence includes L DMRS ports, any DMRS port among the L DMRS ports is associated with a PTRS port, and the number of PTRS ports associated with the first DMRS port sequence is equal to L , the L is a positive integer.

As a sub-embodiment of the above embodiment, the L is equal to 1.

As a sub-embodiment of the above embodiment, the L is equal to 2.

As a sub-embodiment of the above embodiment, the L is greater than 1, and the L DMRS ports are respectively associated with L different PTRS ports.

As a sub-embodiment of the above embodiment, any DMRS port in the first DMRS port sequence except the L DMRS ports is not associated with a PTRS port.

As a sub-embodiment of the above embodiment, the L DMRS ports are indicated by the first signaling.

As a sub-embodiment of the above embodiment, the first signaling indicates the L DMRS ports in the first DMRS port sequence.

As a sub-embodiment of the above embodiment, the L is greater than 1, and the L DMRS ports respectively belong to L different CDM groups.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, the one DMRS port is used to determine the frequency domain resource occupied by the one PTRS port.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, any subcarrier occupied by the one PTRS port is occupied by the one DMRS port.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, the one DMRS port is used to determine the time domain resource occupied by the one PTRS port.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, any symbol occupied by the one PTRS port is not occupied by the one DMRS port.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, the one PTRS port is mapped to the same antenna port as the one DMRS port.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, the PTRS on the one PTRS port is precoded and mapped to the same antenna port as the one DMRS port.

As a sub-embodiment of the above embodiment, the PTRS on the one PTRS port and the DMRS on the one DMRS port are precoded by the same precoding matrix.

As an embodiment, if a PTRS port is a PTRS port associated with a DMRS port, the first node uses the same air domain filter to send the one PTRS port and the one DMRS port.

As an example, for the specific implementation of the association between the DMRS port and the PTRS port, please refer to chapters 6.4.1.2 and 7.4.1.2 of 3GPP TS38.211 (V15.3.0).

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first DMRS The port sequence is related to the number of PTRS ports associated.

As an embodiment, if the number of PTRS ports associated with the first DMRS port sequence is equal to 1, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number.

As an embodiment, if the number of PTRS ports associated with the first DMRS port sequence is equal to 2, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number and the first layer number. The sum of the two levels.

As an embodiment, the second domain in the first signaling is used to determine whether the first DMRS port sequence table is related to the number of PTRS ports associated with the first DMRS port sequence.

As an embodiment, if the second domain in the first signaling is used to determine the first DMRS port sequence table, the number of PTRS ports associated with the first DMRS port sequence is greater than 1.

As an embodiment, if the second domain in the first signaling is not used to determine the first DMRS port sequence table, the number of PTRS ports associated with the first DMRS port sequence is equal to 1 .

Example 13

Embodiment 13 illustrates that the first information according to an embodiment of the present application includes the DMRS port in the first DMRS port sequence to which Schematic diagram of the number of CDM groups; as shown in Figure 13.

As an example, the definition of the CDM group can be found in 3GPP TS 38.211.

As an embodiment, a CDM group includes at least one DMRS port.

As an example, any two DMRS ports in the same CDM group are quasi co-located.

As an example, any two DMRS ports in the same CDM group have delay spread, Doppler spread, Doppler shift, average delay and It is quasi-co-located in terms of Spatial Rx parameter.

As an embodiment, any two DMRS ports in the same CDM group are transmitted by the same air domain filter.

As an embodiment, any two DMRS ports in the same CDM group correspond to the same TCI state.

As an embodiment, any two DMRS ports in the same CDM group are mapped to the same antenna port as the SRS ports in the same SRS resource set.

As an embodiment, any two DMRS ports in the same CDM group occupy the same time-frequency resources.

As an embodiment, any two DMRS ports in the same CDM group occupy different code domain resources.

As an embodiment, the code domain resources include w _f (k'), k' = 0,1 and w _t (l'), l' = 0,1.

As an example, the definitions of w _f (k') and w _t (l') can be found in 3GPP TS38.211.

As an example, there is no DMRS port that belongs to two different CDM groups at the same time.

As an embodiment, all DMRS ports in the first DMRS port sequence belong to the same CDM group.

As an embodiment, the first DMRS port sequence only includes DMRS ports in one CDM group.

As an embodiment, the DMRS ports in the first DMRS port sequence respectively belong to two different CDM groups.

As an embodiment, the first DMRS port sequence includes DMRS ports in two different CDM groups.

As an embodiment, if all DMRS ports in the first DMRS port sequence belong to the same CDM group, the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 1; if the The DMRS ports in a DMRS port sequence belong to two different CDM groups respectively, and the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 2.

As an example, if the first DMRS port sequence only includes DMRS ports in one CDM group, the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 1; if the first The DMRS port sequence includes DMRS ports in two different CDM groups, and the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 2.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first DMRS The number of CDM groups to which the DMRS ports in the port sequence belong is related.

As an embodiment, if the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 1, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. .

As an embodiment, if the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is greater than 1, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. and the sum of the second layers.

As an embodiment, whether the second domain in the first signaling is used to determine the first DMRS port sequence list and the CDM group to which the DMRS port in the first DMRS port sequence belongs Quantity related.

As an embodiment, if the second domain in the first signaling is not used to determine the first DMRS port sequence table, all CDM groups to which the DMRS ports in the first DMRS port sequence belong The stated quantity is equal to 1.

As an embodiment, if the second domain in the first signaling is used to determine the first DMRS port sequence table, the CDM group to which the DMRS port in the first DMRS port sequence belongs The quantity is greater than 1.

Example 14

Embodiment 14 illustrates a schematic diagram of a transmission scheme in which the first information includes a first signal according to an embodiment of the present application; as shown in FIG. 14 .

As an embodiment, the transmission scheme of the first signal is one of TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), SFN (Single Frequency Network) or SDM (Spatial Division Multiplexing).

As an embodiment, the transmission scheme of the first signal is one of SFN or SDM.

As an embodiment, when the transmission scheme of the first signal is TDM, the first signal corresponds to part of the first reference signal resource group and the first signal corresponds to the second reference signal resource. Parts of the group occupy mutually orthogonal time domain resources.

As an embodiment, when the transmission scheme of the first signal is FDM, the first signal corresponds to part of the first reference signal resource group and the first signal corresponds to the second reference signal resource Parts of the group occupy mutually orthogonal frequency domain resources.

As an embodiment, when the transmission scheme of the first signal is SFN, the first signal corresponds to part of the first reference signal resource group and the first signal corresponds to the second reference signal resource Parts of the group occupy overlapping time-frequency resources and correspond to the same DMRS port(s).

As an embodiment, when the transmission scheme of the first signal is SDM, the first signal corresponds to part of the first reference signal resource group and the first signal corresponds to the second reference signal resource. Parts of the group occupy overlapping time-frequency resources and correspond to different DMRS ports.

As an embodiment, the part of the first signal corresponding to the given reference signal resource group refers to: the antenna port in the first signal that is the same as the SRS port of the reference signal resource in the given reference signal resource group. The transmitted part; the given reference signal resource group is any one of the first reference signal resource group and the second reference signal resource group.

As an embodiment, the part of the first signal corresponding to a given reference signal resource group refers to: the part of the first signal that is sent by the same spatial filter as the reference signal resource in the given reference signal resource group. Part; the given reference signal resource group is any one of the first reference signal resource group and the second reference signal resource group.

As an embodiment, whether a sixth higher layer parameter is configured is used to determine the transmission scheme of the first signal.

As an embodiment, when the sixth higher layer parameter is configured, the transmission scheme of the first signal is SFN.

As an embodiment, when the sixth higher layer parameter is not configured, the transmission scheme of the first signal is SDM.

As an embodiment, when the sixth higher layer parameter is not configured, the transmission scheme of the first signal is one of TDM, FDM or SDM.

As an embodiment, the name of the sixth higher-level parameter includes "sfnSchemePdcch".

As an embodiment, the name of the sixth higher-level parameter includes "sfn" and "Pusch".

As an embodiment, the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is related to the transmission scheme of the first signal.

As an embodiment, the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is used to determine the transmission scheme of the first signal.

As an embodiment, when the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 1, the transmission scheme of the first signal is one of TDM, FDM or SFN.

As an embodiment, when the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 1, the transmission scheme of the first signal is SFN.

As an embodiment, when the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong is equal to 2, the transmission scheme of the first signal is SDM.

As an embodiment, a seventh higher layer parameter is used to determine the transmission scheme of the first signal.

As an embodiment, when the value of the seventh higher layer parameter belongs to the first parameter value set, the transmission scheme of the first signal is TDM; the first parameter value set includes at least one parameter value, so Any parameter value in the first parameter value set includes the string "tdm".

As an embodiment, when the value of the seventh higher layer parameter belongs to the second parameter value set, the transmission scheme of the first signal is FDM; the second parameter value set includes at least one parameter value, so Any parameter value in the second parameter value set includes the string "fdm".

As an embodiment, when the value of the seventh higher layer parameter belongs to a third parameter value set, the transmission scheme of the first signal is SDM; the third parameter value set includes at least one parameter value, so Any parameter value in the third parameter value set includes the string "sdm".

As an embodiment, when the seventh higher layer parameter is not configured, the transmission scheme of the first signal is SFN.

As an embodiment, when the seventh higher layer parameter is not configured, the transmission scheme of the first signal is SFN or TDM.

As an embodiment, the name of the seventh higher-level parameter includes "repetitionScheme".

As an embodiment, the seventh higher layer parameter is configured by PUSCH-Config IE.

As an embodiment, the number of repetitions corresponding to the first signal is used to determine the number of repetitions of the first signal. The transmission scheme.

As an embodiment, when the number of repetitions corresponding to the first signal is greater than 1, the transmission scheme of the first signal is TDM.

As an embodiment, when the number of repetitions corresponding to the first signal is equal to 1, the transmission scheme of the first signal is one of FDM, SFN or SDM.

As an embodiment, the number of repetitions corresponding to the first signal is indicated by the first signaling.

As an embodiment, the number of repetitions corresponding to the first signal is indicated by the DCI domain Time domain resource assignment in the first signaling.

As an embodiment, the number of repetitions corresponding to the first signal is configured by a higher-layer parameter.

As an embodiment, the number of repetitions corresponding to the first signal is configured by a higher-level parameter "pusch-AggregationFactor".

As an embodiment, whether the higher layer parameter "pusch-AggregationFactor" is configured is used to determine the transmission scheme of the first signal.

As an embodiment, when the higher layer parameter "pusch-AggregationFactor" is configured, the transmission scheme of the first signal is TDM.

As an embodiment, when the higher layer parameter "pusch-AggregationFactor" is not configured, the transmission scheme of the first signal is one of FDM, SFN or SDM.

As an embodiment, an eighth higher-layer parameter is used to determine the transmission scheme of the first signal, and the name of the eighth higher-layer parameter includes "pusch-TimeDomain" and "AllocationList".

As an embodiment, when there is no entry in the eighth higher layer parameter including a first type parameter, the transmission scheme of the first signal is one of FDM, SFN or SDM.

As an embodiment, when there is at least one entry in the eighth higher layer parameter including a first type parameter, the transmission scheme of the first signal is TDM.

As an embodiment, the name of the first type of parameter includes "numberOfRepetitions".

As an embodiment, the eighth higher layer parameter is configured by PUSCH-Config IE.

As an embodiment, the name of the eighth higher-level parameter includes "pusch-TimeDomainAllocationList".

As an embodiment, the name of the eighth higher-level parameter includes "pusch-TimeDomainResourceAllocationList".

As an embodiment, when the transmission scheme of the first signal is SFN, any layer of the first signal is referenced by one of the first reference signal resource groups in the same time-frequency resource. The same antenna port as the SRS port of the signal resource and the same antenna port as the SRS port of one reference signal resource in the second reference signal resource group are simultaneously transmitted.

As an embodiment, when the transmission scheme of the first signal is SDM, a layer in the first signal is configured by the same SRS port as a reference signal resource in the first reference signal resource group. The antenna port transmits, and the other layer of the first signal is transmitted by the same antenna port as the SRS port of one reference signal resource in the second reference signal resource group.

As an embodiment, when the transmission scheme of the first signal is TDM or DFM, any layer of the first signal in the first RE set is combined with one of the first reference signal resource groups. The SRS port of the reference signal resource is transmitted through the same antenna port, and is simultaneously transmitted in the second RE set by the same antenna port as the SRS port of one reference signal resource in the second reference signal resource group.

As a sub-embodiment of the above embodiment, when the transmission scheme of the first signal is TDM, the first RE set and the second RE set are orthogonal in the time domain; when the first signal When the transmission scheme is FDM, the first RE set and the second RE set are orthogonal in the frequency domain.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first signal related to the transmission scheme.

As an embodiment, if the transmission scheme of the first signal is one of TDM, FDM or SFN, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number.

As an embodiment, if the transmission scheme of the first signal is SFN, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number.

As an example, if the transmission scheme of the first signal is SDM, the number of DMRS ports included in the first DMRS port sequence is equal to the sum of the first layer number and the second layer number. .

As an embodiment, the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the transmission scheme of the first signal.

As an embodiment, if the transmission scheme of the first signal is one of TDM, FDM or SFN, the second domain in the first signaling is not used to determine the first DMRS port Sequence Listing.

As an embodiment, if the transmission scheme of the first signal is SFN, the second field in the first signaling is not used to determine the first DMRS port sequence list.

As an embodiment, if the transmission scheme of the first signal is SDM, the second field in the first signaling is used to determine the first DMRS port sequence list.

Example 15

Embodiment 15 illustrates a schematic diagram in which the first information includes the number of codewords carried by the first signal according to an embodiment of the present application; as shown in FIG. 15 .

As an embodiment, the codeword refers to codeword.

As an embodiment, the number of codewords carried by the first signal is equal to 1.

As an embodiment, the number of codewords carried by the first signal is equal to 2.

As an embodiment, the number of codewords carried by the first signal is equal to 1 or 2.

As an embodiment, any codeword carried by the first signal corresponds to one TB.

As an embodiment, the number of codewords carried by the first signal is equal to the number of TBs carried by the first signal.

As an embodiment, the number of TBs carried by the first signal is equal to 1, the number of codewords carried by the first signal is equal to 1, and one TB carried by the first signal is mapped to A codeword of , the codeword carried by the first signal is codeword 0.

As an embodiment, the number of TBs carried by the first signal is equal to 2, the number of codewords carried by the first signal is equal to 2, and the two TBs carried by the first signal are respectively mapped to the first The two codewords carried by the signal, the two codewords carried by the first signal are codeword 0 and codeword 1 respectively.

As an embodiment, the first signaling includes a second bit group, and the second bit group in the first signaling is used to determine the number of codewords carried by the first signal; The second bit group includes at least one DCI field.

As an embodiment, the second bit group includes a first bit subgroup and a second bit subgroup, and the first bit subgroup in the first signaling enables or disables )TB1, the second bit subset in the first signaling enables or disables TB2.

As a sub-embodiment of the above embodiment, at least one of the TB1 and the TB2 is enabled.

As a sub-embodiment of the above embodiment, if both TB1 and TB2 are enabled, TB1 and TB2 are mapped to codeword 0 and codeword 1 respectively, and the codeword carried by the first signal is The number is equal to 2; if only one TB among the TB1 and the TB2 is enabled, the one TB is mapped to codeword 0, and the number of codewords carried by the first signal is equal to 1.

As a sub-embodiment of the above embodiment, the first bit subgroup includes at least one of the DCI domain Modulation and coding scheme, Redundancy version and New data indicator for TB1, and the second bit subgroup includes at least one of the DCI domain Modulation and coding scheme for TB2. At least one of the DCI domain Modulation and coding scheme, Redundancy version and New data indicator.

As a sub-embodiment of the above embodiment, the first bit subgroup includes DCI domain Modulation and coding scheme and Redundancy version for TB1, and the second bit subgroup includes DCI domain Modulation and coding scheme and Redundancy version for TB2 version.

As a sub-embodiment of the above embodiment, the first bit subgroup is located before the second bit subgroup in the first signaling.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first signal related to the number of codewords carried.

As an embodiment, if the number of codewords carried by the first signal is equal to 1, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number.

As an embodiment, if the number of codewords carried by the first signal is greater than 1, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number and the second layer number. The sum of the numbers.

As an embodiment, whether the second domain in the first signaling is used to determine the relationship between the first DMRS port sequence list and the third related to the number of codewords carried by a signal.

As an embodiment, if the number of codewords carried by the first signal is equal to 1, the second field in the first signaling is not used to determine the first DMRS port sequence list.

As an embodiment, if the number of codewords carried by the first signal is greater than 1, the second field in the first signaling is used to determine the first DMRS port sequence table.

Example 16

Embodiment 16 illustrates a schematic diagram in which the first information includes a first higher-layer parameter according to an embodiment of the present application; as shown in FIG. 16 .

As an embodiment, the name of the first higher-level parameter includes "maxNrofCodeWords".

As an embodiment, the name of the first higher-level parameter includes "maxNrofCodeWords" and "ScheduledByDCI".

As an embodiment, the first higher layer parameter is configured by PUSCH-Config IE.

As an embodiment, the first higher layer parameter indicates a maximum number of codewords for a single DCI schedule for scheduling PUSCH.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first update number. The high-layer parameter indicates the maximum number of codewords of a single DCI schedule.

As an embodiment, if the maximum number of codewords of a single DCI schedule indicated by the first higher layer parameter is not greater than a first threshold, the number of DMRS ports included in the first DMRS port sequence is equal to the first DMRS port sequence. Number of layers.

As an embodiment, if the maximum number of codewords of a single DCI schedule indicated by the first higher layer parameter is greater than a first threshold, the number of DMRS ports included in the first DMRS port sequence is equal to the first The sum of the number of layers and the number of the second layer.

As an embodiment, whether the second domain in the first signaling is used to determine the maximum codeword of a single DCI schedule indicated by the first DMRS port sequence table and the first higher layer parameter Quantity related.

As an embodiment, if the maximum number of codewords of a single DCI schedule indicated by the first higher layer parameter is not greater than a first threshold, the second domain in the first signaling is not used to determine the Describe the first DMRS port sequence list.

As an embodiment, if the maximum number of codewords of a single DCI schedule indicated by the first higher layer parameter is greater than a first threshold, the second domain in the first signaling is used to determine the first A DMRS port sequence list.

As an embodiment, the first threshold is a positive integer.

As an example, the first threshold is equal to 1.

Example 17

Embodiment 17 illustrates a schematic diagram in which the first information includes second higher-level parameters according to an embodiment of the present application; as shown in FIG. 17 .

As an embodiment, the name of the second higher-level parameter includes "Max" and "Layers".

As an embodiment, the name of the second higher layer parameter includes "Max", "Layers" and "UL".

As an embodiment, the name of the second higher layer parameter includes "Max", "MIMO" and "Layers".

As an embodiment, the second higher layer parameter is configured by PUSCH-Config IE.

As an embodiment, the second higher layer parameter is configured by PUSCH-ServingCellConfig IE.

As an embodiment, the second higher layer parameter indicates a maximum number of layers for uplink transmission.

As an embodiment, the second higher layer parameter indicates the maximum number of layers of PUSCH.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the second update It is related to the maximum number of layers indicated by the high-level parameter.

As an embodiment, if the maximum number of layers indicated by the second higher layer parameter is not greater than a second threshold, the number of DMRS ports included in the first DMRS port sequence is equal to the first number of layers.

As an embodiment, if the maximum number of layers indicated by the second higher layer parameter is greater than a second threshold, the number of DMRS ports included in the first DMRS port sequence is equal to the first number of layers and the The sum of the second layer numbers.

As an embodiment, the second domain in the first signaling is used to determine whether the first DMRS port sequence table is related to the maximum number of layers indicated by the second higher layer parameter.

As an embodiment, if the maximum number of layers indicated by the second higher layer parameter is not greater than a second threshold, the first signaling The second field is not used to determine the first DMRS port sequence list.

As an embodiment, if the maximum number of layers indicated by the second higher layer parameter is greater than a second threshold, the second domain in the first signaling is used to determine the first DMRS port sequence table .

As an embodiment, the second threshold is a positive integer.

As an embodiment, the second threshold is a positive integer greater than 1.

As an example, the second threshold is equal to 4.

As an example, the second threshold is equal to 6.

Example 18

Embodiment 18 illustrates a schematic diagram in which the first information includes whether the first layer number is used to determine the interpretation of the second domain in the first signaling according to an embodiment of the present application; as shown in FIG. 18 .

As an embodiment, the first information includes: whether the first layer number is used by the first node to determine the interpretation of the second domain in the first signaling.

As an embodiment, the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number plus the first layer number. Whether the number is used to determine the interpretation of the second field in the first signaling is relevant.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the number of DMRS ports included in the first DMRS port sequence is equal to the First level.

As an embodiment, if the first layer number is not used to determine the interpretation of the second domain in the first signaling, the number of DMRS ports included in the first DMRS port sequence is equal to the The sum of the first layer number and the second layer number.

As an embodiment, whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list and the first layer number are used to determine whether related to the interpretation of the second domain.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the second domain in the first signaling is not used to determine The first DMRS port sequence list.

As an embodiment, if the first layer number is not used to determine the interpretation of the second domain in the first signaling, the second domain in the first signaling is used to determine The first DMRS port sequence list.

As an embodiment, if the first layer number is not used to determine the interpretation of the second domain in the first signaling, the interpretation of the second domain in the first signaling does not depend on on the first layer.

As an embodiment, if the first layer number is not used to determine the interpretation of the second field in the first signaling, the second field in the first signaling indicates the Number of second floors.

As an embodiment, if the first layer number is not used to determine the interpretation of the second domain in the first signaling, the first layer number and the second layer number are indicated separately.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the interpretation of the second domain in the first signaling depends on the Describe the first level.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the interpretation of the second domain in the first signaling is based on having The same number of layers as the first layer.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the interpretation of the second domain in the first signaling is based on the The number of reference signal resources indicated by the second domain in the first signaling is equal to the number of first layers.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the interpretation of the second domain in the first signaling is based on the The number of layers corresponding to the precoder indicated by the second domain in the first signaling is equal to the first number of layers.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the value of the second domain in the first signaling and the The first layer number is jointly used to determine the second reference signal resource group, and the second reference signal resource group The number of included reference signal resources is equal to the number of first layers.

As an embodiment, if the first layer number is used to determine the interpretation of the second domain in the first signaling, the value of the second domain in the first signaling and the The first layer number is jointly used to determine the second precoder in Embodiment 9.

Example 19

Embodiment 19 illustrates a structural block diagram of a processing device used in a first node device according to an embodiment of the present application; as shown in Figure 19. In Figure 19, the processing device 1900 in the first node device includes a first receiver 1901 and a first transmitter 1902.

In Embodiment 19, the first receiver 1901 receives the first signaling; the first transmitter 1902 sends the first signal.

In Embodiment 19, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the The first domain and the second domain in the first signaling are used to determine the antenna port to send the first signal, or the first domain in the first signaling and the third The second field in a signaling is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; The first field in the first signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the first signaling The interpretation of the second domain in is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port The number of DMRS ports included in the sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the The first layer number is still equal to the sum of the first layer number and the second layer number and is related to the first information.

As an embodiment, the first signaling indicates the first DMRS port sequence from a first DMRS port sequence table; the first domain in the first signaling is used to determine the first DMRS Port sequence list, whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.

As an embodiment, the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the second reference signal resource group respectively include at least one reference signal resource. ;Any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group belongs to the second reference signal resource set; A reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.

As an embodiment, the first information includes: the number of PTRS ports associated with the first DMRS port sequence.

As an embodiment, the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.

As an embodiment, the first information includes: a transmission scheme of the first signal.

As an embodiment, the first information includes at least one of the following:

The number of codewords carried by the first signal;

As an embodiment, the first node device is user equipment.

As an embodiment, the first node device is a relay node device.

As an embodiment, the first signaling includes DCI; the position of the first domain in the first signaling is before the second domain; the number of layers of the first signal is equal to the first the number of DMRS ports included in the DMRS port sequence; the first information is used to determine whether the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number or equal to the first layer number and the sum of the second layer number.

As an embodiment, the second domain in the first signaling is not used to determine the first DMRS port sequence table, and any DMRS port sequence in the first DMRS port sequence table includes DMRS The number of ports is equal to the first layer number; or, the second domain in the first signaling is used to determine the first DMRS port sequence list, and any of the first DMRS port sequence lists The number of DMRS ports included in a DMRS port sequence is equal to the sum of the first layer number and the second layer number.

As an embodiment, any reference signal resource in the first reference signal resource group is an SRS resource; any reference signal resource in the second reference signal resource group is an SRS resource; the first reference signal resource is an SRS resource. Any reference signal resource in the signal resource group includes There is one less SRS port, and any reference signal resource in the second reference signal resource group includes at least one SRS port.

As an embodiment, the first receiver 1901 includes the {antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller/processor 459, memory 460, and data source in Embodiment 4. At least one of 467}.

As an embodiment, the first transmitter 1902 includes the {antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller/processor 459, memory 460, data source in Embodiment 4. At least one of 467}.

Example 20

Embodiment 20 illustrates a structural block diagram of a processing device used in a second node device according to an embodiment of the present application; as shown in FIG. 20 . In Figure 20, the processing device 2000 in the second node device includes a second transmitter 2001 and a second receiver 2002.

In Embodiment 20, the second transmitter 2001 sends the first signaling; the second receiver 2002 receives the first signal.

In Embodiment 20, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the The first domain and the second domain in the first signaling are used to determine the antenna port to send the first signal, or the first domain in the first signaling and the third The second field in a signaling is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; The first field in the first signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the first signaling The interpretation of the second domain in is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port The number of DMRS ports included in the sequence is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the The first layer number is still equal to the sum of the first layer number and the second layer number and is related to the first information.

As an embodiment, the first information includes at least one of the following:

The number of codewords carried by the first signal;

As an embodiment, the second node device is a base station device.

As an embodiment, the second node device is user equipment.

As an embodiment, the second node device is a relay node device.

As an embodiment, the second domain in the first signaling is not used to determine the first DMRS port sequence table, and any DMRS port sequence in the first DMRS port sequence table includes DMRS The number of ports is equal to the first layer number; or, the second domain in the first signaling is used to determine the first DMRS port sequence list, and any of the first DMRS port sequence lists one The number of DMRS ports included in the DMRS port sequence is equal to the sum of the first layer number and the second layer number.

As an embodiment, any reference signal resource in the first reference signal resource group is an SRS resource; any reference signal resource in the second reference signal resource group is an SRS resource; the first reference signal resource is an SRS resource. Any reference signal resource in the signal resource group includes at least one SRS port, and any reference signal resource in the second reference signal resource group includes at least one SRS port.

As an embodiment, the second transmitter 2001 includes {antenna 420, transmitter 418, transmission processor 416, multi-antenna transmission processor 471, controller/processor 475, memory 476} in Embodiment 4. At least one.

As an embodiment, the second receiver 2002 includes {antenna 420, receiver 418, receiving processor 470, multi-antenna receiving processor 472, controller/processor 475, memory 476} in Embodiment 4. At least one.

Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps of the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in the form of hardware or in the form of software function modules. This application is not limited to any specific form of combination of software and hardware. User equipment, terminals and UEs in this application include but are not limited to drones, communication modules on drones, remote control aircraft, aircraft, small aircraft, mobile phones, tablets, notebooks, vehicle-mounted communication equipment, vehicles, vehicles, RSU, wireless sensor, network card, Internet of Things terminal, RFID terminal, NB-IOT terminal, MTC (Machine Type Communication, machine type communication) terminal, eMTC (enhanced MTC, enhanced MTC) terminal, data card, network card, vehicle Communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication equipment. The base station or system equipment in this application includes but is not limited to macro cell base station, micro cell base station, small cell base station, home base station, relay base station, eNB, gNB, TRP (Transmitter Receiver Point, sending and receiving node), GNSS, relay Satellites, satellite base stations, air base stations, RSU (Road Side Unit), drones, test equipment, such as wireless communication equipment such as transceivers or signaling testers that simulate some functions of the base station.

It will be understood by those skilled in the art that the present invention may be embodied in other specified forms without departing from its core or essential characteristics. Accordingly, the presently disclosed embodiments are to be regarded in any way as illustrative rather than restrictive. The scope of the invention is determined by the appended claims rather than the foregoing description, and all modifications within the meaning and range of equivalents are deemed to be included therein.

Claims

A first node device used for wireless communication, characterized by including:

The first receiver receives the first signaling;

The first transmitter sends the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the The interpretation of the second domain is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port sequence includes DMRS The number of ports is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. It is still equal to the sum of the first layer number and the second layer number and is related to the first information.
The first node device according to claim 1, wherein the first signaling indicates the first DMRS port sequence from a first DMRS port sequence list; the first DMRS port sequence in the first signaling One field is used to determine the first DMRS port sequence list, and the second field in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.
The first node device according to claim 1 or 2, characterized in that the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the The second reference signal resource group each includes at least one reference signal resource; any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group The signal resources belong to the second reference signal resource set; the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.
The first node device according to any one of claims 1 to 3, wherein the first information includes: the number of PTRS ports associated with the first DMRS port sequence.
The first node device according to any one of claims 1 to 4, wherein the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.
The first node device according to any one of claims 1 to 5, wherein the first information includes a transmission scheme of the first signal.
The first node device according to any one of claims 1 to 6, characterized in that the first information includes at least one of the following:

The number of codewords carried by the first signal;

A first higher layer parameter indicating the maximum number of codewords for a single DCI schedule;

a second higher layer parameter, the second higher layer parameter indicating the maximum number of layers;

Whether the first layer number is used to determine the interpretation of the second domain in the first signaling.
A second node device used for wireless communication, characterized by including:

The second transmitter sends the first signaling;

a second receiver to receive the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the The interpretation of the second domain is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port sequence includes DMRS The number of ports is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. It is still equal to the sum of the first layer number and the second layer number and is related to the first information.
The second node device according to claim 8, characterized in that the first signaling indicates the first DMRS port sequence from a first DMRS port sequence list; the first DMRS port sequence in the first signaling A field is used to determine the first DMRS port sequence list, so Whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.
The second node device according to claim 8 or 9, characterized in that the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the The second reference signal resource group each includes at least one reference signal resource; any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group The signal resources belong to the second reference signal resource set; the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.
The second node device according to any one of claims 8 to 10, wherein the first information includes: the number of PTRS ports associated with the first DMRS port sequence.
The second node device according to any one of claims 8 to 11, wherein the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.
The second node device according to any one of claims 8 to 12, wherein the first information includes a transmission scheme of the first signal.
The second node device according to any one of claims 8 to 13, characterized in that the first information includes at least one of the following:

The number of codewords carried by the first signal;

A first higher layer parameter indicating the maximum number of codewords for a single DCI schedule;

a second higher layer parameter, the second higher layer parameter indicating the maximum number of layers;

Whether the first layer number is used to determine the interpretation of the second domain in the first signaling.
A method used in a first node of wireless communication, characterized by comprising:

receive the first signaling;

Send the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the The interpretation of the second domain is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port sequence includes DMRS The number of ports is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. It is still equal to the sum of the first layer number and the second layer number and is related to the first information.
The method of claim 15, wherein the first signaling indicates the first DMRS port sequence from a first DMRS port sequence table; the first domain in the first signaling is Used to determine the first DMRS port sequence list, whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.
The method according to claim 15 or 16, characterized in that the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the second reference signal resource group The signal resource groups each include at least one reference signal resource; any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group belongs to A second reference signal resource set; the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.
The method according to any one of claims 15 to 17, wherein the first information includes: the number of PTRS ports associated with the first DMRS port sequence.
The method according to any one of claims 15 to 18, wherein the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.
The method according to any one of claims 15 to 19, wherein the first information includes a transmission scheme of the first signal.
The method according to any one of claims 15 to 20, characterized in that the first information includes at least one of the following:

The number of codewords carried by the first signal;

A first higher layer parameter indicating the maximum number of codewords for a single DCI schedule;

a second higher layer parameter, the second higher layer parameter indicating the maximum number of layers;

Whether the first layer number is used to determine the interpretation of the second domain in the first signaling.
A method used in a second node for wireless communication, characterized by comprising:

Send the first signaling;

receive the first signal;

Wherein, the first signaling is used to determine the scheduling information of the first signal; the first signaling includes a first domain and a second domain, and the first domain and the second domain in the first signaling The second domain in the first signaling is used to determine the antenna port for transmitting the first signal, or the first domain in the first signaling and the first domain in the first signaling The second domain is used to determine the precoder of the first signal; the first signaling indicates at least the first layer number among the first layer number or the second layer number; the first The first field in the signaling indicates the first layer number; the second field in the first signaling indicates the second layer number, or the The interpretation of the second domain is related to the first layer number; the first signaling indicates a first DMRS port sequence, and the first DMRS port sequence includes at least one DMRS port; the first DMRS port sequence includes DMRS The number of ports is equal to the first layer number or equal to the sum of the first layer number and the second layer number; the number of DMRS ports included in the first DMRS port sequence is equal to the first layer number. It is still equal to the sum of the first layer number and the second layer number and is related to the first information.
The method of claim 22, wherein the first signaling indicates the first DMRS port sequence from a first DMRS port sequence table; the first domain in the first signaling is Used to determine the first DMRS port sequence list, whether the second domain in the first signaling is used to determine whether the first DMRS port sequence list is related to the first information.
The method according to claim 22 or 23, characterized in that the first signaling indicates a first reference signal resource group and a second reference signal resource group, and the first reference signal resource group and the second reference signal resource group The signal resource groups each include at least one reference signal resource; any reference signal resource in the first reference signal resource group belongs to the first reference signal resource set, and any reference signal resource in the second reference signal resource group belongs to A second reference signal resource set; the first reference signal resource group and the second reference signal resource group are used to determine the antenna port for transmitting the first signal.
The method according to any one of claims 22 to 24, wherein the first information includes: the number of PTRS ports associated with the first DMRS port sequence.
The method according to any one of claims 22 to 25, wherein the first information includes: the number of CDM groups to which the DMRS ports in the first DMRS port sequence belong.
The method according to any one of claims 22 to 26, wherein the first information includes a transmission scheme of the first signal.
The method according to any one of claims 22 to 27, characterized in that the first information includes at least one of the following:

The number of codewords carried by the first signal;

A first higher layer parameter indicating the maximum number of codewords for a single DCI schedule;

a second higher layer parameter, the second higher layer parameter indicating the maximum number of layers;

Whether the first layer number is used to determine the interpretation of the second domain in the first signaling.