CN108631998B

CN108631998B - Reference signal mapping method, network equipment and terminal equipment

Info

Publication number: CN108631998B
Application number: CN201710184947.6A
Authority: CN
Inventors: 吴明; 张弛; 秦熠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2020-07-28
Anticipated expiration: 2037-03-24
Also published as: CN108631998A

Abstract

The application discloses a reference signal mapping method, network equipment and terminal equipment, wherein the terminal equipment is configured with a first configuration relation used when receiving a downlink DMRS and a second configuration relation used when transmitting an uplink DMRS, the downlink direction, the terminal equipment receives configuration information of the network equipment, determines a port number for mapping the downlink DMRS according to the first configuration relation, receiving the DMRS at the port of the downlink DMRS, in the uplink direction, receiving the configuration information of the network equipment by the terminal equipment, determining the port number for mapping the uplink DMRS according to the second configuration relation, DMRS is transmitted on uplink DMRS ports, and part of port configurations of the first configuration relation are orthogonal to part of port configurations of the second configuration relation, such that the downlink DMRS port of the first cell is orthogonal to the uplink DMRS port of the second cell, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

Description

Reference signal mapping method, network equipment and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a reference signal mapping method, a network device, and a terminal device.

Background

In the enhanced long Term Evolution (L ong Term Evolution Advanced, abbreviated L TE-a), downlink data is modulated by Orthogonal Frequency Division Multiplexing (OFDM), uplink data is modulated by Discrete fourier transform spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM), maximum 8 ports (ports) of downlink Demodulation Reference Signal (DMRS) in L TE-a are mapped to Discrete Resource units (Resource elements, abbreviated 7-14), downlink OFDM is modulated by random noise (PN), uplink DMRS is mapped to Discrete Resource units (Resource elements, abbreviated CS) by full OFDM, uplink DMRS is mapped to full OFDM, and uplink data is mapped to full OFDM by full OFDM, full PAPR, full OFDM, and OFDM.

For New wireless (NR for short), the hardware capability of the terminal device may be improved, and the design of NR considers that the uplink may also use the OFDM modulation method. Aiming at NR uplink OFDM modulation and other requirements, the uplink DMRS needs to adopt a more suitable design.

In the conventional L TE, there are two Duplex modes, i.e., Frequency Domain Duplex (FDD) and Time Domain Duplex (TDD), the FDD Duplex mode is that uplink and downlink communications are performed in different Frequency bands, so there is no cross interference between uplink and downlink communications, and the TDD Duplex mode is that uplink and downlink communications are performed in the same Frequency band but in different Time slots, and the uplink and downlink ratio between adjacent cells is the same, so there is no cross interference between uplink and downlink.

DMRSs are used for channel estimation, and correct demodulation of DMRSs is crucial to correct demodulation of data. If dynamic TDD, flexible duplex, or full duplex service is used in the wireless communication system, strong cross interference may exist between cells, which may cause the DMRS to be incorrectly demodulated. Therefore, the uplink and downlink DMRSs need to be designed to avoid strong cross interference on the DMRSs.

In the third Generation Partnership Project (3 GPP) conference standard, a symmetric design is used for DMRSs of Uplink and Downlink, and when CP-OFDM modulation is used at least for Uplink and Downlink, NR needs to support that DMRSs of Downlink (D L) and Uplink (U L) have the same DMRS structure, and D L and U L of different links may be configured to be orthogonal to each other.

Uplink and downlink DMRS port mapping affects the indication overhead of port and layer numbers, and if the design is not reasonable, unnecessary overhead may be caused.

Therefore, in NR, how to reasonably design the port mapping of DMRS is a problem to be solved.

Disclosure of Invention

The application provides a reference signal mapping method, network equipment and UE (user equipment), which are used for providing a DMRS (demodulation reference signal) mapping method in NR (noise-reduction) and using the mapping method to receive and transmit DMRS.

In a first aspect, the present application provides a reference signal mapping method, including:

the method comprises the steps that terminal equipment receives configuration information sent by network equipment, wherein the configuration information is used for indicating a space layer number k1 in a first configuration relation or indicating a space layer number k2 in a second configuration relation, the space layer number k1 corresponds to k 1port numbers, the space layer number k2 corresponds to k 2port numbers, the first configuration relation comprises the corresponding relation between the space layer number in the downlink direction and the port numbers, the second configuration relation comprises the corresponding relation between the space layer number in the uplink direction and the port numbers, k1 is a positive integer, and k2 is a positive integer;

the terminal equipment determines a first resource for receiving the downlink DMRS according to the configuration information and the first configuration relation, wherein the first resource comprises a resource mapped at the k 1port numbers, or determines a second resource for sending the uplink DMRS according to the configuration information and the second configuration relation, and the second resource comprises a resource mapped at the k 2port numbers;

the terminal equipment receives the downlink DMRS on the first resource or transmits the uplink DMRS on the second resource;

wherein the first configuration relationship and the second configuration relationship satisfy the following relationship:

the first configuration relationship includes x port configurations corresponding to a number n of spatial layers, the second configuration relationship includes y port configurations corresponding to a number m of spatial layers, on one or more symbols in the same resource block, resources corresponding to at least one port configuration of the x port configurations are different from resources corresponding to at least one port configuration of the y port configurations, n is a positive integer, x is a positive integer, m is a positive integer, and y is a positive integer.

N may specifically be a positive integer not greater than N, and M may specifically be a positive integer not greater than M. N may be the largest number of spatial layers (or the largest number of ports) in the downlink DMRS configuration or N is a value predefined by the protocol that is smaller than the largest number of spatial layers in the downlink DMRS configuration. M may be the largest number of spatial layers (or the largest number of ports) in the uplink DMRS configuration or M is a value predefined by the protocol that is smaller than the largest number of spatial layers in the uplink DMRS configuration.

According to the method, the terminal equipment is configured with a first configuration relation used when receiving the downlink DMRS and a second configuration relation used when transmitting the uplink DMRS, and in the downlink direction, the terminal equipment receives configuration information of the network equipment, determines a port number for mapping the downlink DMRS according to the first configuration relation, receives the DMRS at the port of the downlink DMRS, and in the uplink direction, the terminal equipment receives the configuration information of the network equipment, determines a port number for mapping the uplink DMRS according to the second configuration relation, and transmits the DMRS at the port of the uplink DMRS, and part of port configuration of the first configuration relation is orthogonal to part of port configuration of the second configuration relation, so that the port of the downlink DMRS of the first cell is orthogonal to the port of the uplink DMRS of the second cell, and accordingly, the uplink and downlink DMRS of different cells can simultaneously and correctly receive and.

With reference to the first aspect, in a first possible implementation manner of the first aspect, i port numbers corresponding to at least one spatial layer number i in the first configuration relationship are the smallest i port numbers among j port numbers corresponding to at least one spatial layer number j, where i is a positive integer no greater than j, and j is a positive integer no greater than n; alternatively, the first and second electrodes may be,

in the first configuration relationship, the i port numbers corresponding to the at least one spatial layer number i are the largest i port numbers in the j port numbers corresponding to the at least one spatial layer number j, i is a positive integer not greater than j, and j is a positive integer not greater than n.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, r port numbers corresponding to at least one spatial layer number r in the second configuration relationship are the smallest r port numbers among s port numbers corresponding to at least one spatial layer number s, r is a positive integer no greater than s, and s is a positive integer no greater than m; alternatively, the first and second electrodes may be,

in the second configuration relationship, the r port numbers corresponding to the at least one spatial layer number r are the largest r port numbers in the s port numbers corresponding to the at least one spatial layer number s, r is a positive integer not greater than s, and s is a positive integer not greater than m.

In a second aspect, the present application provides a terminal device, which includes a plurality of functional modules, and is configured to implement any one of the reference signal mapping methods provided in the first aspect, such that the terminal device is configured with a first configuration relationship used when receiving a downlink DMRS and a second configuration relationship used when transmitting an uplink DMRS, and a downlink direction, the terminal device receives configuration information of a network device, determines a port number for mapping the downlink DMRS according to the first configuration relationship, receives the DMRS at a port of the downlink DMRS, and receives configuration information of the network device in the uplink direction, determines a port number for mapping the uplink DMRS according to the second configuration relationship, and transmits the DMRS at a port of the uplink DMRS, and a part of port configurations of the first configuration relationship are orthogonal to a part of port configurations of the second configuration relationship, so that the port of the downlink DMRS of a first cell is orthogonal to the port of the uplink DMRS of a second cell, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In one possible design, the structure of the terminal device includes a processor and a transceiver, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method of the first aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the network device. A memory may also be included in the terminal device for coupling with the processor that stores program instructions and data necessary for the terminal device.

In a third aspect, the present application provides a data transmission method, including:

the method comprises the steps that a network device sends configuration information to a terminal device, wherein the configuration information is used for indicating the number of spatial layers k1 in a first configuration relation or indicating the number of spatial layers k2 in a second configuration relation, the number of spatial layers k1 corresponds to k 1port numbers, the number of spatial layers k2 corresponds to k 2port numbers, the first configuration relation comprises the corresponding relation between the number of spatial layers in a downlink direction and the port numbers, the second configuration relation comprises the corresponding relation between the number of spatial layers in an uplink direction and the port numbers, k1 is a positive integer, and k2 is a positive integer;

the network equipment transmits a downlink DMRS on a first resource or receives an uplink DMRS on a second resource, wherein the first resource corresponds to the configuration information and the first configuration relation and comprises resources mapped on the k 1port numbers, and the second resource corresponds to the configuration information and the second configuration relation and comprises resources mapped on the k 2port numbers;

Similarly to the foregoing, N may specifically be not more than N, and M may be not more than M.

With reference to the third aspect, in a first possible implementation manner of the third aspect, in the first configuration relationship, i port numbers corresponding to at least one spatial layer number i are the smallest i port numbers among j port numbers corresponding to at least one spatial layer number j, where i is a positive integer no greater than j, and j is a positive integer no greater than n; alternatively, the first and second electrodes may be,

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, r port numbers corresponding to at least one spatial layer number r in the second configuration relationship are the smallest r port numbers among s port numbers corresponding to at least one spatial layer number s, r is a positive integer no greater than s, and s is a positive integer no greater than m; alternatively, the first and second electrodes may be,

In a fourth aspect, the present application provides a network device, which includes a plurality of functional modules, and is configured to implement any one of the reference signal mapping methods provided in the third aspect, such that a terminal device is configured with a first configuration relationship used when receiving a downlink DMRS and a second configuration relationship used when transmitting an uplink DMRS, and a downlink direction, the terminal device receives configuration information of the network device, determines a port number for mapping the downlink DMRS according to the first configuration relationship, receives the DMRS at a port of the downlink DMRS, and receives the configuration information of the network device in the uplink direction, the terminal device determines a port number for mapping the uplink DMRS according to the second configuration relationship, and transmits the DMRS at a port of the uplink DMRS, and a part of port configurations of the first configuration relationship are orthogonal to a part of port configurations of the second configuration relationship, so that the port of the downlink DMRS of a first cell is orthogonal to the port of the uplink DMRS of a second cell, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In one possible design, the network device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method of the first aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the terminal device. A memory may also be included in the network device for coupling with the processor that stores program instructions and data necessary for the network device.

In a fifth aspect, the present application provides a reference signal mapping method, including:

the terminal equipment determines resources for transmitting the DMRS according to first indication information and second indication information, wherein the first indication information indicates first port configuration, and the second indication information indicates related information of the resources corresponding to the first port configuration or indicates related information of second port configuration corresponding to the first port configuration;

and the terminal equipment transmits the DMRS according to the determined resource.

According to the method and the device, the terminal equipment determines resources for transmitting the DMRS according to the first indication information and the second indication information, the first indication information indicates the configuration of the first port, and the second indication information indicates the relevant information of the resources corresponding to the configuration of the first port, such as port offset, resource offset and the like, so that when uplink and downlink DMRS transmissions of different cells conflict, the resources for transmitting the DMRS in an uplink or downlink mode can be changed through the second indication information, the fact that the resources for transmitting the DMRS in the uplink and downlink of the different cells do not conflict is guaranteed, the fact that the uplink and downlink are orthogonal is guaranteed, and therefore the fact that the uplink and downlink of the different cells receive and transmit data on the same time frequency resource can be achieved simultaneously and correctly.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the information about the configuration of the second port includes a port offset; the terminal equipment determines resources for transmitting the DMRS according to the first indication information and the second indication information, and the method comprises the following steps:

the terminal equipment determines the configuration of the first port according to the first indication information;

the terminal equipment determines the second port configuration according to the port offset and the first port configuration;

and the terminal equipment determines that the resource corresponding to the second port configuration is a resource for transmitting the DMRS.

With reference to the fifth aspect, in a second possible implementation manner of the fifth aspect, the related information of the resource corresponding to the first port configuration includes a resource offset, where the resource offset is a time domain symbol offset and/or a frequency domain offset; the terminal equipment determines resources for transmitting the DMRS according to the first indication information and the second indication information, and the method comprises the following steps:

and the terminal equipment determines the resources for transmitting the DMRS according to the resources corresponding to the first port configuration and the resource offset.

In a sixth aspect, the present application provides a terminal device, which in one possible design, includes a plurality of functional modules, for implementing any one of the reference signal mapping methods provided by the fifth aspect, the terminal device determines the resources for transmitting the DMRS according to the first indication information and the second indication information, since the first indication information indicates the first port configuration and can indicate the related information of the resource corresponding to the first port configuration through the second indication information, for example, the related information is a port offset, a resource offset, etc., therefore, when the uplink and downlink DMRS transmissions of different cells conflict, the resources of the uplink or downlink DMRS transmissions can be changed through the second indication information, the resources of the uplink and downlink DMRS transmissions of different cells are ensured not to conflict, the uplink and downlink orthogonality is ensured, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In a seventh aspect, the present application provides a reference signal mapping method, including:

the method comprises the steps that network equipment sends first indication information and second indication information to terminal equipment, wherein the first indication information indicates first port configuration, and the second indication information indicates related information of resources corresponding to the first port configuration or indicates related information of second port configuration corresponding to the first port configuration;

the first indication information and the second indication information are used for indicating resources of terminal equipment for transmitting DMRS.

According to the method and the device, the network equipment sends the first indication information and the second indication information to the terminal equipment, the terminal equipment can determine resources for transmitting the DMRS according to the first indication information and the second indication information, the first indication information indicates the configuration of the first port, and the second indication information can indicate the relevant information of the resources corresponding to the configuration of the first port, such as port offset, resource offset and the like, so that when uplink and downlink DMRS transmissions of different cells conflict, the resources for uplink or downlink transmission of the DMRS can be changed through the second indication information, the resources for uplink and downlink DMRS transmissions of different cells are guaranteed not to conflict, uplink and downlink orthogonality is guaranteed, and the uplink and downlink of different cells can simultaneously and correctly receive and transmit data on the same time frequency resource.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the information related to the second port configuration includes a port offset; and configuring corresponding resources for the second port by the resources of the DMRS, wherein the second port configuration corresponds to the first port configuration and the port offset.

With reference to the seventh aspect, in a second possible implementation manner of the seventh aspect, the related information of the resource corresponding to the first port configuration includes a resource offset, where the resource offset is a time domain symbol offset and/or a frequency domain offset; and the resource of the DMRS corresponds to the resource offset and the resource corresponding to the first port configuration.

In an eighth aspect, the present application provides a network device, in a possible design, the network device includes a plurality of functional modules, configured to implement any one of the reference signal mapping methods provided in the seventh aspect, so that the network device sends first indication information and second indication information to a terminal device, and the terminal device may determine resources for transmitting DMRSs according to the first indication information and the second indication information, where the first indication information indicates configuration of a first port, and may indicate, by using the second indication information, related information of resources corresponding to the configuration of the first port, for example, the related information is port offset, resource offset, and the like, so that when uplink and downlink DMRS transmissions of different cells collide, resources for uplink or downlink DMRS transmissions of different cells may be changed by using the second indication information, and it is ensured that the resources for uplink and downlink DMRS transmissions of different cells do not collide, and it is ensured that the uplink and downlink are orthogonal, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In a ninth aspect, the present application provides a reference signal mapping method, including:

the terminal equipment determines resources for transmitting the DMRS according to first indication information and second indication information, wherein the second indication information indicates a first set of at least two sets, the at least two sets are sets of port configuration of the DMRS, and the first indication information indicates the port configuration of the DMRS in the first set;

According to the method and the device, the network equipment sends the first indication information and the second indication information to the terminal equipment, the terminal equipment can determine resources for transmitting the DMRS according to the first indication information and the second indication information, the second indication information indicates the first set of at least two sets, the at least two sets are sets configured by ports of the DMRS, and the first indication information indicates the port configuration of the DMRS in the first set, so that when uplink and downlink DMRS of different cells collide, the resources for transmitting the DMRS in an uplink or downlink mode can be changed through the first indication information and the second indication information, the resources for transmitting the DMRS in the uplink and downlink of different cells are guaranteed not to collide, uplink and downlink orthogonality is guaranteed, and the uplink and downlink of different cells can transmit and receive data on the same time frequency resource simultaneously and correctly.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the at least two sets further include a second set, where the first set includes x port configurations corresponding to the number n of spatial layers, and the second set includes y port configurations corresponding to the number n of spatial layers, and at least one of the x port configurations is different from at least one of the y port configurations.

In a tenth aspect, the present application provides a terminal device, in a possible design, where the terminal device includes a plurality of functional modules, and is configured to implement any one of the reference signal mapping methods provided in the first aspect, so that the network device sends first indication information and second indication information to the terminal device, and the terminal device may determine resources for transmitting DMRSs according to the first indication information and the second indication information, where the second indication information indicates a first set of at least two sets, the at least two sets are sets of port configurations of DMRSs, and the first indication information indicates the port configurations of the DMRSs in the first set, so that when uplink and downlink DMRS transmissions of different cells collide, resources for transmitting DMRSs uplink or downlink can be changed through the first indication information and the second indication information, and it is ensured that the resources for transmitting DMRSs of different cells do not collide, the orthogonality of the uplink and the downlink is ensured, thereby realizing that the uplink and the downlink of different cells can simultaneously and correctly receive and transmit data on the same time frequency resource.

In one possible design, the terminal device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method of the ninth aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the network device. A memory may also be included in the terminal device for coupling with the processor that stores program instructions and data necessary for the terminal device.

In an eleventh aspect, the present application provides a reference signal mapping method, including:

the method comprises the steps that a network device sends first indication information and second indication information to a terminal device, wherein the second indication information indicates a first set of at least two sets, the at least two sets are sets of port configurations of DMRS, and the first indication information indicates the port configurations of the DMRS in the first set;

With reference to the eleventh aspect, in a first possible implementation manner of the eleventh aspect, the at least two sets further include a second set, where the first set includes x port configurations corresponding to the number n of spatial layers, and the second set includes y port configurations corresponding to the number n of spatial layers, and at least one of the x port configurations is different from at least one of the y port configurations.

In a twelfth aspect, the present application provides a network device, in a possible design, the network device includes a plurality of functional modules, configured to implement any one of the reference signal mapping methods provided in the eleventh aspect, so that the network device sends first indication information and second indication information to a terminal device, and the terminal device can determine resources for transmitting DMRS according to the first indication information and the second indication information, where the second indication information indicates a first set of at least two sets, the at least two sets being sets of port configurations of DMRS, and the first indication information indicates the port configurations of DMRS in the first set, so that when uplink and downlink DMRS transmissions of different cells collide, resources for uplink or downlink DMRS transmissions of different cells can be changed by using the first indication information and the second indication information, and it is ensured that the resources for uplink and downlink DMRS transmissions of different cells do not collide, the orthogonality of the uplink and the downlink is ensured, thereby realizing that the uplink and the downlink of different cells can simultaneously and correctly receive and transmit data on the same time frequency resource.

In one possible design, the network device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method of the eleventh aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the terminal device. A memory may also be included in the network device for coupling with the processor that stores program instructions and data necessary for the network device.

In a thirteenth aspect, the present application provides a reference signal mapping method, including:

the terminal equipment determines resources for transmitting the DMRS according to first indication information and second indication information, wherein the second indication information indicates a first method of at least two different DMRS port resource mapping methods, and the first indication information indicates first port configuration;

According to the method and the device, the network equipment sends the first indication information and the second indication information to the terminal equipment, the terminal equipment can determine resources for transmitting the DMRS according to the first indication information and the second indication information, the second indication information indicates a first method in at least two different DMRS port resource mapping methods, and the first indication information indicates the configuration of the first port, so that when uplink and downlink DMRS of different cells conflict, the resources for uplink or downlink transmission of the DMRS of the different cells can be changed through the first indication information and the second indication information, the uplink and downlink DMRS of the different cells are guaranteed not to conflict, the uplink and downlink orthogonality is guaranteed, and the uplink and downlink of the different cells can simultaneously and correctly receive and transmit data on the same time-frequency resource.

In a fourteenth aspect, the present application provides a terminal device, which in one possible design, includes a plurality of functional modules, for implementing any one of the reference signal mapping methods provided by the thirteenth aspect, such that the network device sends the first indication information and the second indication information to the terminal device, the terminal device may determine the resources for transmitting the DMRS according to the first indication information and the second indication information, since the second indication information indicates a first method of at least two different DMRS port resource mapping methods, the first indication information indicates a first port configuration, therefore, when the uplink and downlink DMRS transmissions of different cells collide, the resources of the uplink or downlink DMRS transmissions can be changed through the first indication information and the second indication information, the resources of the uplink and downlink DMRS transmissions of different cells are ensured not to collide, and the uplink and downlink are ensured to be orthogonal, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In one possible design, the terminal device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method of the thirteenth aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the network device. A memory may also be included in the terminal device for coupling with the processor that stores program instructions and data necessary for the terminal device.

In a fifteenth aspect, the present application provides a reference signal mapping method, including:

the method comprises the steps that network equipment sends first indication information and second indication information to terminal equipment, wherein the second indication information indicates a first method of at least two different DMRS port resource mapping methods, and the first indication information indicates first port configuration;

In a sixteenth aspect, the present application provides a network device, which in one possible design, includes a plurality of functional modules, for implementing any reference signal mapping method provided by the fifteenth aspect, such that the network device sends first indication information and second indication information to the terminal device, the terminal device may determine resources for transmitting the DMRS according to the first indication information and the second indication information, since the second indication information indicates a first method of at least two different DMRS port resource mapping methods, the first indication information indicates a first port configuration, therefore, when the uplink and downlink DMRS transmissions of different cells collide, the resources of the uplink or downlink DMRS transmissions can be changed through the first indication information and the second indication information, the resources of the uplink and downlink DMRS transmissions of different cells are ensured not to collide, and the uplink and downlink are ensured to be orthogonal, therefore, the data can be correctly received and transmitted on the same time frequency resource by the uplink and the downlink of different cells.

In one possible design, the network device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform corresponding functions in the reference signal mapping method according to the fifteenth aspect. The transceiver is used for supporting communication between the terminal device and the network device, and receiving information or instructions related to the reference signal mapping method sent by the terminal device. A memory may also be included in the network device for coupling with the processor that stores program instructions and data necessary for the network device.

In a seventeenth aspect, an embodiment of the present application provides a computer storage medium for storing computer software instructions for a terminal device provided in the second aspect, a network device provided in the fourth aspect, a network device provided in the sixth aspect, a terminal device provided in the tenth aspect, a base station provided in the twelfth aspect, a base station provided in the fourteenth aspect, or a base station provided in the sixteenth aspect, which contains programs designed to execute the first, third, fifth, seventh, ninth, eleventh, thirteenth, or fifteenth aspects, respectively.

In an eighteenth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first or third or fifth or seventh or ninth or eleventh or thirteenth or fifteenth aspect, respectively, described above.

Drawings

Fig. 1 is a schematic diagram of uplink and downlink cross interference of adjacent cells according to the present application;

FIG. 2 is a schematic diagram of an application scenario in which the present application is applied;

fig. 3(a) is a single symbol DMRS design;

fig. 3(b) is a two-symbol DMRS design;

fig. 4(a) -4 (b) are a single symbol DMRS design;

fig. 5(a) -5(b) are a two-symbol DMRS design;

fig. 6 shows a downlink DMRS port mapping manner in L TE;

fig. 7(a) is a flowchart of a reference signal mapping method provided in the present application;

fig. 7(b) is a flowchart of a reference signal mapping method provided herein;

fig. 8 is a flowchart of a reference signal mapping method provided herein;

fig. 9 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 10 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 11 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 12 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 13(a) shows an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 13(b) shows an uplink and downlink DMRS port mapping manner provided in this application;

fig. 14 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 15 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 16 is a diagram illustrating an uplink and downlink DMRS port mapping manner provided in the present application;

fig. 17 is a schematic structural diagram of a network device provided in the present application;

fig. 18 is a schematic structural diagram of a terminal device provided in the present application;

FIG. 19 is a schematic diagram of the device structure provided in the present application;

fig. 20 is a schematic structural diagram of a terminal device provided in the present application;

fig. 21 is a schematic structural diagram of a network device provided in the present application;

fig. 22 is a schematic structural diagram of a terminal device provided in the present application;

fig. 23 is a schematic structural diagram of a network device provided in the present application;

fig. 24 is a schematic structural diagram of a terminal device provided in the present application;

FIG. 25 is a schematic diagram of a network device architecture provided herein;

fig. 26 is a schematic structural diagram of a terminal device provided in the present application;

fig. 27 is a schematic structural diagram of a network device provided in the present application.

Detailed Description

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

The embodiment of the application can be applied to the existing cellular Communication systems, such as global system for Mobile Communication (GSM), Wideband Code Division Multiple Access (WCDMA), long Term Evolution (L ong Term Evolution, L TE), etc., and is also applicable to the future WIreless Communication system, such as a 5G (fifth generation) system, such as an Access Network using NR, a Cloud Radio Access Network (CRAN), etc., and can also be extended to the similar WIreless Communication systems, such as WIreless Fidelity (wifi), Worldwide Interoperability for microwave Access (WiMAX), and 3 gpp-related cellular systems.

As shown in fig. 2, which is a schematic view of an application scenario applicable to the present application, a network architecture and a service scenario described in the embodiment of the present invention are for more clearly explaining the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating a possible application scenario of the present invention, which includes at least one user equipment UE10 communicating with a Radio Access Network (RAN). The RAN comprises at least one base station 20 (BS), which is shown for clarity with only one base station and one UE. The RAN is connected to a Core Network (CN). Optionally, the CN may be coupled to one or more External networks (External networks), such as the internet, Public Switched Telephone Network (PSTN), and so on.

Some of the terms referred to in this application are described below for the sake of clarity.

1) A terminal device, also called User Equipment (UE), or called a terminal, is a device for providing voice and/or data connectivity to a User, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. Common terminals include, for example: the mobile terminal includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device, such as a smart watch, a smart bracelet, and a pedometer.

2) The network device may be, for example, a base station, which is also called a radio access network (english: radio access network, abbreviated as: RAN) device, which is a device for accessing a terminal to a wireless network, including but not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (HNB), a baseband unit (BBU), a Base Station (g NodeB, gNB), a transmission point (TRP), and a TP. In addition, the system can also comprise a Wifi Access Point (English: Access Point, AP for short) and the like.

It should be noted that the Time unit referred to in this application may be a Time slot, a Transmission Time Interval (TTI), a subframe, a Time slot (slot), or a mini-slot.

In this application, an antenna port is also referred to as a port or a port; the number of spatial layers, also referred to as layers, will be used interchangeably with the same meaning of a plurality of terms in this application.

The standard in NR is to use FDM (including comb), Code Division Multiplexing (CDM) (including OCC and CS) and Time Division Multiplexing (TDM) methods for D L DMRS port Multiplexing.

As shown in fig. 3(a), the DMRS design is a single-symbol DMRS design, wherein the D L DMRS design mainly has three comb tooth structures, each having a comb tooth spacing of 4, 2, 1, corresponding to the first, second, and third graphs from left to right, for the design having a comb tooth spacing of 4, the 1 st, 2 nd, 3 th, and 4 th ports use FDM frequency division multiplexing, i.e., the

ports

1, 2 nd, 3 nd, and 4 occupy different REs, respectively, the

ports

5, 6 th, 7 th, and 8 use CDM multiplexing on the basis of the

ports

1, 2 th, 3 th, and 4, and the CDM may be OCC or cyclic shift.

As shown in fig. 3(b), the first diagram is a two-symbol DMRS design with a comb spacing of 2, from left to right. The 1 st and 2 nd ports use FDM multiplexing but occupy 2 symbols at this time. The 3, 4-port is multiplexed using CDM over the 1, 2-port. The second figure is a design with a comb spacing of 4. The 1 st, 2 nd, 3rd, 4 th symbols use FDM multiplexing and the 5 th, 6 th, 7 th, 8 th symbols use FDM multiplexing. This design multiplexes 8 DMRS ports using 2 symbols. The third figure is a comb 4 design using the multiplexing method of FDM + CDM + TDM. The 1 st to 8 th ports are multiplexed on two symbols using the FDM + TDM method, and the 9 th to 16 th ports are multiplexed on 1 to 8port REs using CDM. The design multiplexes 16 ports using 2 symbols.

As shown in fig. 4(a) -4 (b), for a single-symbol DMRS design, for design (a), 1 symbol multiplexes 4DMRS ports, where the multiplexing between 0 and 1port and between 2 and 3 ports may be FDM or CDM multiplexing. For design (b), 8 DMRS ports are multiplexed on 1 symbol, but the design uses 2 RBs (24 subcarriers in the frequency domain) to design 8 ports. 0, 2, 4, 6port uses FDM multiplexing, and there may be CDM or FDM multiplexing between 1, 3, 5, 7port and 0, 2, 4, 6port respectively.

As shown in fig. 5(a) -5(b), for a two-symbol DMRS design, where fig. 5(a) multiplexes 8 DMRS ports for two symbols, two consecutive REs with the same line may be OCC or FDM with a frequency domain length of 2; fig. 5(b) multiplexes 12 DMRS ports for two symbols.

The above various D L DMRS ports are all methods using FDM, CDM (including OCC and cyclic shift), TDM combination, L TE-A, uplink and downlink DMRS are completely different designs, in NR, at least for CP-OFDM, the uplink and downlink have the same DMRS structure, and the uplink and downlink DMRS of links with different transmission directions can be configured to be orthogonal.

L TE-A, the downlink DMRS has 8 ports at most, and the corresponding port numbers are 7-14. OCCs corresponding to the ports are shown in Table 1:

table 1port and OCC correspondence table

Wherein, p is an antenna port (port) corresponding to the DMRS, w_pAnd (l') is the OCC corresponding to the port with port number p. The location where downlink DMRS is mapped to REs is shown in fig. 6, where ports {7, 8, 11, 13} are mapped to the same Resource Element (RE) and ports {9, 10, 12, 14} are mapped to the same RE.

The Format (Format)2C in the Downlink Control Information (DCI) in the protocol 36.212 indicates DMRS antenna port, scrambling ID and corresponding layer number, and the indication tables are shown in table 2(a) (table 5.3.3.1.5C-1 from protocol 36.212) and table 2(b) (table 5.3.3.1.5C-2 from protocol 36.212)):

table 2(a) antenna port, space layer number indication table

Table 2(b) antenna port, space layer number indicator

Wherein, 2(a) is the indication method of the L TE-A release version at the early stage, and Table 2(b) is the indication method added in the L TE-A release version which is newer.

It can be seen from the two indication tables that, when single user Multiple input Multiple Output (SU-MIMO) is used, the D L DMRS uses Multiple layers (or Multiple ports), all starting from the lowest port, for example, table 2(a) has 2layers corresponding to port7-8, 3layers corresponding to port7-9, 4layers corresponding to port7-10, and 5 layers corresponding to port7-11 … ….

There are many cases where the value0, 1, 2, 3 of one codeword (codeword) in table 2(a) corresponds to 1layer, port7 or port8 may be used, and the scrambling ID nSCID may be 0 or 1, which is a configuration for Multi-user Multiple-Input Multiple-Output (MU-MIMO).

The present application provides a reference signal mapping method, as shown in fig. 7(a), in a downlink direction, a network device sends a DMRS to a terminal device, including the following steps:

step 101, the network device sends configuration information to the terminal device and sends the DMRS on the first resource.

The configuration information is used to indicate a number of spatial layers k1 in a first configuration relationship, where the number of spatial layers k1 corresponds to k 1port numbers, and the first configuration relationship includes a correspondence relationship between the number of spatial layers in the downlink direction and the port number.

The first resources include resources mapped at the k 1port numbers.

And 102, the terminal equipment receives the configuration information sent by the network equipment.

And step 103, the terminal equipment determines a first resource for receiving the downlink DMRS according to the configuration information and the first configuration relation.

And step 104, the terminal equipment receives the downlink DMRS on the first resource.

As shown in fig. 7(b), in the uplink direction, the terminal device transmits the DMRS to the network device, and the method includes the following steps:

step 201, the network device sends configuration information to the terminal device.

The configuration information is used to indicate a number of spatial layers k2 in a second configuration relationship, where the number of spatial layers k2 corresponds to k 2port numbers, the second configuration relationship includes a correspondence relationship between the number of spatial layers in the uplink direction and the port numbers, k1 is a positive integer, and k2 is a positive integer.

Step 202, the terminal device receives the configuration information sent by the network device.

And step 203, the terminal equipment determines a second resource for transmitting the uplink DMRS according to the configuration information and the second configuration relation.

The second resources include resources mapped at the k 2port numbers.

And step 204, the terminal equipment transmits the uplink DMRS on the second resource.

And step 205, the network equipment receives the uplink DMRS on the second resource.

the first configuration relationship includes x port configurations corresponding to N number of spatial layers, the second configuration relationship includes y port configurations corresponding to M number of spatial layers, on one or more symbols in the same resource block, resources corresponding to at least one port configuration in the x port configurations are different from resources corresponding to at least one port configuration in the y port configurations, N is a positive integer not greater than N, x is a positive integer, M is a positive integer not greater than M, and y is a positive integer.

Optionally, in the first configuration relationship, i port numbers corresponding to at least one spatial layer number i are the smallest i port numbers among j port numbers corresponding to at least one spatial layer number j, where i is a positive integer no greater than j, and j is a positive integer no greater than n; alternatively, the first and second electrodes may be,

Optionally, r port numbers corresponding to at least one spatial layer number r in the second configuration relationship are the smallest r port numbers among s port numbers corresponding to at least one spatial layer number s, where r is a positive integer not greater than s, and s is a positive integer not greater than m; alternatively, the first and second electrodes may be,

The application provides a reference signal mapping method, as shown in fig. 8, including the following steps:

step 301, the network device sends the first indication information and the second indication information to the terminal device.

Step 302, the terminal device determines the resource for transmitting the DMRS according to the first indication information and the second indication information.

And step 303, the network equipment and the terminal equipment transmit the DMRS according to the resource for transmitting the DMRS.

According to the difference between the first indication information and the second indication information, the DMRS may be transmitted in the following methods.

In a first method, the first indication information indicates a first port configuration, and the second indication information indicates related information of a resource corresponding to the first port configuration or indicates related information of a second port configuration corresponding to the first port configuration.

Specifically, the following two methods can be divided into:

(1) the information related to the second port configuration comprises a port offset.

Then step 302 above comprises:

step A, the terminal equipment determines the configuration of the first port according to the first indication information;

step B, the terminal equipment determines the configuration of the second port according to the port offset and the configuration of the first port;

and step C, the terminal equipment determines that the resources corresponding to the second port configuration are resources for transmitting the DMRS.

(2) And the related information of the resource corresponding to the first port configuration comprises a resource offset, and the resource offset is a time domain symbol offset and/or a frequency domain offset.

Then step 302 above comprises:

and step B, the terminal equipment determines the resources for transmitting the DMRS according to the resources corresponding to the first port configuration and the resource offset.

Method two, the second indication information indicates a first set of at least two sets, the at least two sets being sets of port configurations of DMRSs, and the first indication information indicates the port configurations of the DMRSs in the first set.

Specifically, the at least two sets further include a second set, where the first set includes x port configurations corresponding to the number n of spatial layers, and the second set includes y port configurations corresponding to the number n of spatial layers, and at least one of the x port configurations is different from at least one of the y port configurations.

And thirdly, the second indication information indicates a first method of at least two different DMRS port resource mapping methods, and the first indication information indicates the configuration of the first port.

The above-described methods will be specifically described below with reference to specific examples.

Example one

In the first embodiment of the application, based on the determined DMRS design principles of D L and U L in the NR standard, and in combination with the design of D L DMRS of each clock, DMRS port mappings of D L and U L are reasonably designed, and unnecessary indication overhead is avoided.

The spatial layer annotation method is similar to the design rule of L TE-A, namely, a plurality of port numbers corresponding to the configuration of a plurality of spatial layers in the case of SU-MIMO are continuous port numbers from the minimum port number, and partial ports in the uplink DMRS and the downlink DMRS are mapped to the same Resource Elements (REs) from low to high.

In this embodiment, it is assumed that similar port and spatial layer number indication methods are used for the uplink DMRS and the downlink DMRS, and different port mapping methods for the uplink DMRS and the downlink DMRS may be designed to facilitate the uplink DMRS and the downlink DMRS to be configured to be orthogonal.

If the downlink DMRS has at least one configuration with n spatial layers, n is less than or equal to the maximum downlink port number or the maximum spatial layer number. The uplink DMRS has at least one configuration with m spatial layers, and m is less than or equal to the maximum port number of the downlink or the maximum spatial layer number. The main design principle of this embodiment is to make at least one of all the port configurations corresponding to the number of spatial layers n of the downlink DMRS have different resources from at least one of all the port configurations corresponding to the number of spatial layers m of the uplink DMRS. The time domain resource positions may be different, the frequency domain resource positions may be different, or the time frequency resource positions may be different. Therefore, the configuration that at least one space layer number of the downlink DMRS is n and the configuration that at least one space layer number of the uplink DMRS is m can be ensured to be orthogonal. n, m can have various values.

Generally, in the case that strong cross interference exists in neighboring cells or in other cases, the uplink and downlink DMRSs of the neighboring cells are considered to be configured to be orthogonal. In this case, for the uplink or the downlink, the number of spatial layers generally configured is not too large, because if too many spatial layers are configured for both the uplink and the downlink, strong cross interference may cause that data corresponding to multiple spatial layers cannot be correctly demodulated. In this respect, the value of n, m may set a maximum value, and generally the value of n, m cannot reach the maximum number of spatial layers in the downlink or uplink. For example, the maximum value of n, m may be 2 or 4, etc., which is also related to the final design adopted for DMRS.

As shown in fig. 9, the uplink and downlink DMRS port mapping method provided by the present application is as follows: suppose that 4port numbers in all the ports in the downlink are x0, x1, x2 and x3, and 4port numbers in all the ports in the uplink are y0, y1, y2 and y3, wherein x0-x3 are sequentially increased, and y0-y3 are sequentially increased. According to the design principle of the embodiment, the uplink and downlink DMRS ports and the spatial layer number indication method are similar, and the mapping rule of the uplink and downlink DMRS ports is designed, so that port numbers which need to be configured into an orthogonal uplink and downlink are mapped on different resources.

A simple example would be to map D L port x0-x3 to the RE exactly in the reverse order of U L port y0-y 3.

In this mapping manner, D L and U L may use the same DMRS port and layer number indication method, and when the number of uplink and downlink DMRS ports is small, uplink and downlink DMRS orthogonality is configured without increasing additional overhead.

Accordingly, for example, the port and spatial layer number configuration corresponding to one codeword, some configuration items in all the port and spatial layer number configurations may be as shown in tables 3(a) and 3 (b).

Table 3(a) antenna port in downlink direction, space layer number indication table

Table 3(b) antenna port in uplink direction, space layer number indication table

It can be seen that under the uplink and downlink DMRS port mapping method, without adding other layer configurations, D L1 layers and U L1 layers can be orthogonal, D L2 layers and U L2 layers can be orthogonal, D L3 layers and U L1 layers can be orthogonal, and D L1 layers and U L3 layers can be orthogonal.

Similarly, the uplink and downlink DMRS port mapping methods shown in fig. 10-12 may also be used.

In addition to these examples, other DMRS mapping methods satisfying the design principle of the present embodiment are also applicable to the method of the present embodiment.

It can be seen that there is a rule for the above D L and U L dmrport mapping, and the corresponding DMRS port mapping formula is as follows:

the frequency domain resources mapped by the D L DMRS ports satisfy the following rules:

the frequency domain resources mapped by the U L DMRS port satisfy the following rules:

if D0 in NR, U1 DMRS adopts an indicating method similar to the number of D3 DMRS ports and layers in 2TE-A, i.e. when SU-MIMO, a plurality of layers are continuous from the lowest layer, the mapping method can ensure that the ports corresponding to D4 DMRS1 layers and U5 DMRS 3layers are mapped on different positions of the frequency domain, and simultaneously the ports corresponding to D62 layers and U72 layers are mapped on different positions of the frequency domain, the ports corresponding to D83 layers and U91 layers are mapped on different positions of the frequency domain, and the ports corresponding to D2 layers and U3 layers can only ensure that the ports corresponding to D2 layers and U2 layers are mapped on different positions of the frequency domain, and the ports corresponding to D2 layers and U3 layers are mapped on different positions of the frequency domain, so that the ports corresponding to D2 layers and U3 layers can only need to be mapped on the frequency domain, and the ports corresponding to D2 layers and U3 layers, and the ports corresponding to DMRS 2layers can only need to be mapped on the frequency domain, and the ports corresponding to DMRS L1 layers, the ports corresponding to DMRS, the ports corresponding to the ports of the DMRS, the ports of:

or

Or

Or

For example, taking fig. 13(a) as an example, others may be inferred according to the mapping rules, and are not listed.

The DMRS mapping method comprises the steps of determining the DMRS ports of the DMRS, wherein x0-x3 are 4 ports in all ports of the D L DMRS, y0-y3 are 4 ports in all ports of the U L DMRS, the total number of the DMRS ports of D L and the total number of the DMRS ports of U L can be the same or different, and other port mappings of the DMRS of D L or U L can be similar to the embodiment and can also use other design methods.

The above design is designed for DMRSs with a subcarrier interval of comb teeth of 4, and orthogonal methods of FDM are used for uplink and downlink DMRSs. If the final standard adopts a comb design with subcarrier spacing of 2, and 0, 1port is multiplexed by using an FDM method. In this case, it is only necessary to ensure that port x0 and y1 map on the same RE, and port x1 and y0 map on the same RE.

In the first embodiment of the application, when similar port and layer indication methods are used for the D L and the U L DMRSs, the D L and the U L DMRSs can be configured to be orthogonal by reasonably designing port mapping rules of the D L and the U L DMRSs and avoiding adding extra indication overhead.

The above examples mainly aim at adopting a comb structure, and the DMRS port mapping method of this embodiment may also be adopted for DMRS design that adopts a frequency domain OCC or a time domain OCC. For example, as shown in fig. 13 (b):

other time domain or frequency domain CDM multiplexed uplink and downlink DMRS designs may also use the port mapping method of this embodiment.

In the above embodiment, the method corresponding to fig. 7(a) and 7(b) is implemented, specifically, table 3(a) is a first configuration relationship, table 3(b) is a second configuration relationship, the configuration information is the spatial layer number information in fig. 3(a), the configuration information further includes a port number corresponding to the spatial layer number shown in fig. 3(a) and 3(b), and with reference to the first embodiment, the following behavior example is implemented, and a specific process of interaction between the terminal device and the network device is:

step 101, the network device sends configuration information to the terminal device.

For example, the configuration information indicates one of the spatial layer numbers in table 3(a) above and the port number corresponding to the spatial layer number, for example, if the indication information is "n", n is a specific value, it indicates that 2layer is selected, and the corresponding port is port x0 and port x1, for example, if the indication information is "n + 1", n +1 is a specific value, it indicates that 3layer is selected, and the corresponding port is port x0, port x1, and port x 3.

Since the first configuration relationship is the above table 3(a), and the second configuration relationship used by other terminal devices in the uplink direction is the above table 3(b), according to the related introduction in the first embodiment, it can be known that downlink transmission between the current network device and the current base terminal device and uplink transmission between other terminal devices and other network devices are orthogonal on the same resource, and therefore, interference does not occur, and thus, resource utilization rate can be submitted.

Wherein the first arrangement relationship shown in table 3(a) and the second arrangement relationship shown in table 3(b) satisfy: the first configuration relationship includes x port configurations corresponding to N number of spatial layers, the second configuration relationship includes y port configurations corresponding to M number of spatial layers, on one or more symbols in the same resource block, resources corresponding to at least one port configuration in the x port configurations are different from resources corresponding to at least one port configuration in the y port configurations, N is a positive integer not greater than N, x is a positive integer, M is a positive integer not greater than M, and y is a positive integer. N may be the largest number of spatial layers (or the largest number of ports) in the downlink DMRS configuration or N is a value predefined by the protocol that is smaller than the largest number of spatial layers in the downlink DMRS configuration. M may be the largest number of spatial layers (or the largest number of ports) in the uplink DMRS configuration or M is a value predefined by the protocol that is smaller than the largest number of spatial layers in the uplink DMRS configuration. The number of spatial layers n here is not necessarily linked to the configuration value n in table 3 (a).

For example, suppose the ports corresponding to 1layer in table 3(a) have the following: port x0, port x1, and 1layer in table 3(b) correspond to the following ports: port y2 and port y3 indicate that the port configuration corresponding to at least one 1layer in table 3(a) is orthogonal to the port configuration corresponding to at least one 1layer in table 3(b), i.e. corresponding to different resources, e.g. port x0 is orthogonal to port y 3.

In table 3(a), the following conditions are satisfied: in table 3(a), i port numbers corresponding to at least one spatial layer number i are the smallest i port numbers among j port numbers corresponding to at least one spatial layer number j, i is a positive integer no greater than j, and j is a positive integer no greater than n; alternatively, the first and second electrodes may be,

in table 3(a), i port numbers corresponding to at least one spatial layer number i are the largest i port numbers among j port numbers corresponding to at least one spatial layer number j, i is a positive integer not greater than j, and j is a positive integer not greater than n.

Table 3(b) satisfies the following conditions: in table 3(b), the r port numbers corresponding to the at least one spatial layer number r are the smallest r port numbers among the s port numbers corresponding to the at least one spatial layer number s, r is a positive integer not greater than s, and s is a positive integer not greater than m; alternatively, the first and second electrodes may be,

in table 3(b), the r port numbers corresponding to the at least one spatial layer number r are the largest r port numbers among the s port numbers corresponding to the at least one spatial layer number s, r is a positive integer not greater than s, and s is a positive integer not greater than m.

Example two

The main design principle of this embodiment is still that, in all the port configurations corresponding to the number of spatial layers of the downlink DMRS n, at least one of the resources corresponding to the port configuration is different from at least one of all the port configurations corresponding to the number of spatial layers of the uplink DMRS m. However, in this embodiment, it is assumed that similar rules are used for port mapping of the uplink DMRS and the downlink DMRS, that is, part or all of port numbers of the uplink DMRS and the downlink DMRS are mapped to the same frequency domain position from low to high. In this case, by designing the ports of the DMRSs in the uplink and the downlink and the content of the indication of the number of spatial layers, the resource corresponding to the configuration of the port with the number of spatial layers n in the downlink and the resource corresponding to the configuration of the port with the number of spatial layers m in the uplink may also be different, that is, the configuration of the uplink and downlink ports is orthogonal to FDM.

The design method enables the D L and U L DMRS to be configured to be orthogonal without adding extra indication overhead.

One simple example is the D L DMRS port x0, x1, x2, x3 and U L DMRS port y0, y1, y2, y3 use the same mapping rule, as shown in fig. 14.

Some configuration items included in the port configurations of all uplink and downlink DMRSs may use the port and layer indication methods of D L and U L DMRSs shown in table 4(a) and table 4 (b).

Table 4(a) downlink antenna port, space layer number indication table

Table 4(b) table of spatial layer number indication for uplink antenna ports, or port and layer indication methods for D L and U L DMRS shown in tables 5(a) and 5 (b).

Table 5(a) downlink antenna port, space layer number indication table

Table 5(b) antenna port in uplink direction, space layer number indication table

The method reasonably designs the layer number and the port number of the uplink and downlink DMRS in the configuration information (such as DCI) of the network equipment, so that the uplink and downlink DMRS can be configured to be orthogonal without adding extra indication overhead under the condition that the uplink and downlink DMRS use a similar port mapping method.

In this embodiment, only uplink and downlink DMRS port mapping and an indication method of corresponding port and layer numbers are provided, and other mapping methods and indication methods are similar, and the basic principle is to design port configuration corresponding to one or more spatial layer numbers of D L and U L DMRS, so that resources mapped to ports corresponding to the spatial layer numbers of D L DMRS and the spatial layer numbers of U L DMRS, which need to be configured to be orthogonal, are exactly located at different positions in the frequency domain.

Similarly, x0-x3 are 4 of all ports of D L DMRS, y0-y3 are 4 of all ports of U L DMRS, and other port and layer indication methods of D L or U L DMRS can be designed similarly to the embodiment.

In the embodiment of the invention, under the condition that D L and U L DMRSs use similar port mapping rules, the D L and U L DMRSs can be configured to be orthogonal by reasonably designing the indication contents of ports and layers of uplink DMRSs and downlink DMRSs in DCI and avoiding adding extra indication overhead.

In the above embodiment, corresponding to the method implementation in fig. 7(a) and 7(b), specifically, table 4(a) is a first configuration relationship, table 3(b) is a second configuration relationship, the configuration information is the spatial layer number information in fig. 4(a), the configuration information further includes a port number corresponding to the spatial layer number shown in fig. 4(a) and 4(b), and with reference to the first embodiment, the following behavior example is implemented, and a specific process of interaction between the terminal device and the network device is as follows:

For example, the configuration information indicates one of the number of spatial layers in table 4(a) above and the port number corresponding to the number of spatial layers, for example, if the indication information is "n", n is a specific value, it indicates that 2layer is selected, and the corresponding ports are port x0 and port x1, for example, if the indication information is "n + 1", n +1 is a specific value, it indicates that 3layer is selected, and the corresponding ports are port x0, port x1, and port x 3.

Since the first configuration relationship is the above table 4(a), and the second configuration relationship used by other terminal devices in the uplink direction is the above table 4(b), according to the related introduction in the first embodiment, it can be known that downlink transmission between the current network device and the current base terminal device and uplink transmission between other terminal devices and other network devices are orthogonal on the same resource, and therefore, interference does not occur, and thus, resource utilization rate can be submitted.

Wherein the first arrangement relationship shown in table 4(a) and the second arrangement relationship shown in table 4(b) satisfy: the first configuration relationship includes x port configurations corresponding to N number of spatial layers, the second configuration relationship includes y port configurations corresponding to M number of spatial layers, on one or more symbols in the same resource block, resources corresponding to at least one port configuration in the x port configurations are different from resources corresponding to at least one port configuration in the y port configurations, N is a positive integer not greater than N, x is a positive integer, M is a positive integer not greater than M, and y is a positive integer.

For example, suppose the ports corresponding to 1layer in table 4(a) have the following: port x0, port x1, and 1layer in table 3(b) correspond to the following ports: port y2 and port y3 indicate that the port configuration corresponding to at least one 1layer in table 4(a) is orthogonal to the port configuration corresponding to at least one 1layer in table 4(b), i.e. corresponding to different resources, e.g. port x0 is orthogonal to port y 3.

In table 4(a), the following conditions are satisfied: in table 4(a), i port numbers corresponding to at least one spatial layer number i are the smallest i port numbers among j port numbers corresponding to at least one spatial layer number j, i is a positive integer no greater than j, and j is a positive integer no greater than n; alternatively, the first and second electrodes may be,

in table 4(a), i port numbers corresponding to at least one spatial layer number i are the largest i port numbers among j port numbers corresponding to at least one spatial layer number j, i is a positive integer not greater than j, and j is a positive integer not greater than n.

EXAMPLE III

The D L DMRS is multiplexed by adopting the following method, namely port x0-x3 is multiplexed by adopting the FDM method, and port x4-x7 and port x0-x3 are multiplexed by adopting the CDM method on the same RE, the uplink also adopts a similar multiplexing method, namely port y0-y3 is multiplexed by adopting the FDM method, and port y4-y7 and port y0-y3 are multiplexed by adopting the CDM method on the same RE, as shown in FIG. 15.

Assuming that CDM is frequency domain or time domain OCC (the method of frequency domain OCC is shown in the diagram, this embodiment is also applicable to the method of time domain OCC), two port multiplexes only need OCC with length of 2, which is [ +1, +1] and [ +1, -1], and OCC with longer length may also be used.

Table 6(a) downlink antenna port, space layer number indication table

Table 6(b) antenna port in uplink direction, space layer number indication table

Since port x0 and y0 use mutually orthogonal OCCs, port x0 and y0 are orthogonal, and similarly, port x1 and y1, port x2 and y2, and port x3 and y3 are also orthogonal to each other, and x0 and y1, y2, y3, x1 and y0, y2, y3, x3 and y0, y1, and y2 are orthogonal to FDM, the DMRSs D L-4 layers and U L DMRSs 1-4layers can be guaranteed to be orthogonal to each other by using the port and layer indication methods in the above table without adding other indication overhead.

If CDM is a cyclic shift method, D L DMRS port x0-x3 and U L DMRS port 0-y3 are also only required to use mutually orthogonal cyclic shifts, so that D L DMRS 1-4layers and U L DMRS 1-4layers can be orthogonal without increasing extra overhead.

If it is desired that port x4-x7 and port y4-y7 can be configured to be orthogonal, it is only necessary to have port x4-x7 and port y4-y7 use OCC or cyclic shift that are orthogonal to each other.

In this embodiment, the port of the D L DMRS is x0-x7, which does not mean that the number of D L ports is necessarily 8, and the number of D L ports may be greater than 8, and similarly, the number of U L ports may also be greater than 8.

And aiming at the uplink and downlink DMRS, a CDM method can be used for orthogonality, and CDM corresponding to the uplink and downlink DMRS port is reasonably designed, so that the uplink and downlink DMRS orthogonality can be configured without increasing extra overhead.

Example four

The first, second, and third embodiments mainly achieve the purpose of configuring orthogonality of uplink and downlink DMRSs without increasing indication overhead by modifying port mapping or port and layer indication content of the uplink and downlink DMRSs or CDM corresponding to the ports. However, in the design process of uplink and downlink DMRS pattern, port mapping, etc., the same or similar design may be used for uplink and downlink DMRS port mapping, CDM, and indication of port, layer, etc., based on simple or other principles. In this case, the present implementation may configure the uplink and downlink DMRSs to be orthogonal with as little indication overhead as possible.

The method comprises the following steps: indicating port transfer (shift)

Take the uplink and downlink DMRS port mapping method shown in fig. 15 as an example. Assuming that uplink and downlink DMRSs multiplex 8 DMRS ports on one symbol using FDM + CDM method, and ports x0-x7 and ports y0-y7 use the same CDM, ports x (i) are not orthogonal to y (i), i > is 0 and i < > is 0. If the uplink and downlink DMRSs use similar port and layer indication methods (as shown in the following table), the uplink and downlink DMRSs cannot be configured to be orthogonal. At this time, uplink and downlink DMRSs may be configured to be orthogonal by indicating a port shift. For example, when the uplink and downlink DMRSs do not need to be configured to be orthogonal, the uplink and downlink DMRSs use a normal port and layer indication (as shown in tables 6(a) and 6 (b)).

If the uplink DMRS and the downlink DMRS need to be configured to be orthogonal, the uplink DMRS port is changed by indicating uplink or downlink port shift, for example, after port shift is indicated, at this time, the uplink DMRS1layer corresponds to the port y4, 2layers corresponds to the port y4-y5, 3layers corresponds to the port y4-y6, and 4layers correspond to the port y4-y 7. I.e. port number corresponding to the same configuration value has an offset value K after port shift is indicated, which may be one value (e.g. offset value K is 4 in this example) or more values predefined by the protocol. If the offset value has multiple selectable values, the network device is required to notify the used offset value through configuration information, or implicitly determine through other information. port shift may be embodied in the protocol in two ways:

the first method is that the protocol provides two or more port configuration tables (or referred to as port configuration relationship) for the downlink, uplink or downlink. And the terminal equipment determines which port configuration relationship is used according to the indication information corresponding to the port shift. For example, there are two port configuration tables in the downlink, the uplink, or the downlink, which are table (a) and table (b), respectively, and it is assumed that 1-bit information is used to notify whether to perform port shift, where the 1-bit indication information is 0, and the terminal device determines the configuration corresponding to the table (a) according to the information; the 1-bit indication information is 1, and the terminal device determines the configuration corresponding to the usage table (b) according to the information. Some or all of the configuration items in table (a) and table (b) are different. For example, when the network device does not indicate port shift information, the terminal device uses the configuration method in table (a) by default, and if the terminal device needs to use the configuration method in table (b), the network device sends an indication message to the terminal device.

The second method is that a DMRS port configuration table (or referred to as a port configuration relationship) is used for downlink, uplink, or downlink, and the port content indicated in some or all configuration items in the configuration table may be variable, for example, there is an offset value K, and if the network device indicates that port shift is not needed, the offset value K may be 0; if the network device indicates that port shift is required, the offset value K is a fixed value, or K has multiple selectable values, and which value is specifically adopted by K is determined according to the indication information of the network device or determined according to other implicit information. Similarly, when the network device does not indicate port shift information, the terminal device may default to an offset value of 0 or the offset value is a fixed value, and if the network device indicates port shift information, the terminal device determines the offset value of the port according to the indication information of the network device.

The second method is shown in table 7(a) and table 7(b) where K is a constant value or a variable value, or the changed indication content has no obvious relationship with the indication content in the case of no port shift.

Table 7(a) downlink antenna port, space layer number indication table

Table 7(b) antenna port in uplink direction, space layer number indication table

The above port shift is only a name in the present embodiment, and it may not be stated in the protocol that the indication information is used to indicate whether to perform port shift, and it may be that only one indication information is given. The indication information is different and the corresponding operation is different. The port shift designation in this example does not affect the substantive approach of the final patent.

The port shift may be explicitly notified by higher layer signaling, broadcast signaling, MAC CE, DCI, etc., and may be notified using N (N may be 1 or more than 1) bits. Or, implicit notification or triggering may be performed in other manners, for example, in some configurations, the user equipment may determine that the uplink DMRS and the downlink DMRS that need to be configured under the configuration are orthogonal, and at this time, the uplink DMRS or the downlink DMRS uses another port and layer indication method. For example, if the network device indicates that no resource for transmitting the DMRS on the resource corresponding to the terminal device DMRS may be used to transmit data or other signals (or information), in this case, it may be determined that it is not necessary to configure uplink and downlink DMRS orthogonality, and which port configuration is used correspondingly may be determined through the configuration.

The broadcast information may be a Main Information Block (MIB) or a System Information Block (SIB), the higher layer signaling may be Radio Resource Control (RRC) signaling, the control channel information may be downlink control information, and the downlink control information may be control information carried on a Physical Downlink Control Channel (PDCCH) or common control channel information (e.g., a Physical Control Format Indicator Channel (PCFICH) in a long term evolution (L) TE system), or a channel that is newly introduced in the standard, has the same function but different names.

For uplink or downlink single link, the port multiplexing adopts FDM and TDM, and the CDM mode is used when uplink and downlink DMRS are configured to be orthogonal. In this case, if the uplink and downlink DMRSs need to be configured to be orthogonal, it may be indicated by 1 bit that CDM demodulation is needed for the user equipment channel. Similar to the port shift method, the indication information may be carried in high-layer signaling, broadcast signaling, MAC CE, DCI, etc., or may be implicitly notified or triggered by other methods.

In the first method, the reference mapping method for the terminal device and the network device may refer to the flow shown in fig. 8, specifically:

For example, the first indication information may be a port offset, for example, the port offset indicates the K value in the above-mentioned label 7.

Specifically, step 302 includes:

for example, the terminal device determines that the second port is configured as ports y (0+ K) -port y (3+ K) in table 7, where ports y0-port y3 is the first port configuration and K is the port offset.

The second method comprises the following steps: symbol shift indicating DMRS port mapping

If the uplink and downlink DMRS is designed with two symbols, as shown in fig. 16.

If the uplink and downlink DMRS are orthogonal by using the FDM method, when the number of ports of the uplink and downlink DMRS is large, the orthogonality of all uplink and downlink DMRS ports cannot be realized on one symbol, at this time, an indication port shift may need to be used, so that uplink or downlink is subjected to port shift, and a port after the port shift is mapped on an RE (resource element) of another symbol, which means thatThe samples may satisfy orthogonality. This case can also use the above-described method of changing the port, layer indication content. Or directly on another DMRS symbol. Embodied in the protocol is changing the mapped time domain symbols: for example, when uplink and downlink DMRSs do not need to be configured to be orthogonal, time domain symbol positions to which uplink or downlink basic pattern DMRSs are mapped are as follows: (P)₀，…，P_N… may be downlink DMRS port or uplink DMRS port), where l' or l represents a time domain symbol position mapped by DMRS resources, and may represent a symbol position within one Resource Block (RB) or a symbol position on one or more subframes/slots/mini-slots or other time units).

When uplink and downlink DMRSs need to be configured to be orthogonal, time domain symbol positions to which uplink or downlink base type (basic pattern) DMRSs are mapped are as follows:

or

The two reasons are that when the uplink DMRS and the downlink DMRS are configured to be orthogonal, only when the number of ports of the uplink DMRS and the downlink DMRS is small, for example, when the uplink DMRS is configured to be orthogonal, the number of layers of the uplink DMRS does not exceed 4 or 2, and the number of layers of the downlink DMRS does not exceed 4 or 2, in this case, only P ∈ { P needs to be set to be orthogonal₀，P₁，P₂… from the corresponding symbol L shift to the symbol L +1 configuration P ∈ { P }_N，P_N+1，P_N+2…, the uplink and downlink DMRS are not necessarily configured to be orthogonal, so P ∈ { P }_N，P_N+1，P_N+2… the time domain symbols of the mapping may or may not be shifted.

Two cases of whether the symbol shift is present in the protocol, the DMRS for basic pattern may be as follows:

or

When uplink and downlink DMRS orthogonality does not need to be configured, delta l is 0; when the uplink and downlink DMRS need to be configured to be orthogonal, delta l is 1.

Similarly, the indication method of the symbol position shift may be explicitly indicated or implicitly indicated or triggered, similar to the port shift method.

In the second method, the reference mapping method for the terminal device and the network device may refer to the flow shown in fig. 8, specifically:

For example, the second indication information may be a symbol offset, e.g., an offset from the first symbol to the second symbol indicated by the symbol offset.

Specifically, step 302 includes:

and step B, the terminal equipment determines the resources for transmitting the DMRS according to the resources corresponding to the first port configuration and the symbol offset.

The third method comprises the following steps: pattern shift indicating port mapping

Assuming that port mapping rules of uplink and downlink DMRSs are the same when the uplink and downlink DMRS orthogonality does not need to be configured, namely port numbers are mapped to the same RE from low to high, if the uplink and downlink DMRS orthogonality needs to be configured, the frequency domain position k mapped by the uplink or downlink port can be modified, for example, D L DMRS port x0-x3 and U L DMRS port y0-y3 are mapped to the same RE.

Taking fig. 14 as an example, for example, when the uplink DMRS and the downlink DMRS do not need to be configured to be orthogonal:

downlink DMRS mapping:

uplink DMRS mapping:

when the uplink and downlink DMRS are required to be configured to be orthogonal, the uplink or downlink DMRS mapping method can be modified, for example, the uplink DMRS is modified to be mapped into

Or modify the downlink DMRS mapping to

As embodied in the protocol, two formulas for frequency domain resource mapping may be used, and the following formula may also be used:

when the uplink DMRS and the downlink DMRS do not need to be configured to be orthogonal, delta K (i) is equal to 0; when the uplink and downlink DMRS need to be configured to be orthogonal, the specific delta K (i) is related to the design of the DMRS.

The above is only an example of orthogonalizing uplink and downlink DMRSs by using pattern shift. Because the pattern design of the DMRS is not finally determined, other pattern designs may be adopted for the DMRS, but the method of this embodiment is also applicable to other DMRS pattern designs. For example, all the uplink and downlink orthogonal port mapping manners mentioned in the first embodiment may be applied by the pattern shift method in this embodiment. The uplink and downlink ports mentioned in this embodiment may be only a part of the total ports, and do not represent that there are only 4 ports in the downlink or uplink, and other port design principles may be the same as or different from those in this embodiment.

The indication method of pattern shift is similar to the indication method of port shift. The indication information may be transmitted by higher layer signaling, broadcast signaling, MAC CE, DCI, etc., and may be indicated using 1 bit. Also, the implicit notification or trigger may be made in other ways.

In the third method, the reference mapping method for the terminal device and the network device may refer to the flow shown in fig. 8, specifically:

For example, the second indication information may be a frequency domain offset, e.g., a frequency domain offset indicating a shift from the first frequency domain position to the second frequency domain position.

Specifically, step 302 includes:

and step B, the terminal equipment determines the resources for transmitting the DMRS according to the resources corresponding to the first port configuration and the frequency domain offset.

The second (symbol shift) and the third (pattern shift) methods may be similar to the indication method of the first (port shift) method in this embodiment, for example, a corresponding symbol offset value or a frequency domain resource offset value may be determined by different indication values of the network device, or when the network device does not indicate related information, a default offset value is provided, for example, no offset is provided at this time, and when the network device sends related indication information, the terminal device determines the corresponding offset value according to the indication information.

Also the designations shift and pattern shift do not affect the novelty of the real-time scheme in this embodiment.

Under the condition that uplink and downlink DMRS port mapping and port and layer indication methods are similar, the purpose of enabling uplink and downlink DMRS to be configured to be orthogonal is achieved through indication overhead as few as possible and modification of uplink and downlink DMRS mapping formulas in a protocol as few as possible.

EXAMPLE five

Embodiments one to four are all designed from the perspective of reducing the indication overhead of configuring uplink and downlink DMRSs, such as port mapping of DMRSs and indication contents of ports and layers. For simple design of uplink and downlink DMRSs, it is also possible to directly indicate various orthogonal configurations, which may increase the indication overhead, but has the advantage of simplicity.

Assuming that the port mapping method used by the uplink and downlink DMRSs is as shown in fig. 14, in order to not modify the DMRS port mapping method, and configure the uplink and downlink DMRSs to be orthogonal, the indication content of the port and layer in the downlink or uplink may be increased. For example, the following indication methods are used, as shown in tables 8(a) and 8 (b).

Table 8(a) downlink antenna port, space layer number indication table

Table 8(b) antenna ports in the uplink direction, the spatial layer number indication table or the following indication method is used, as shown in tables 9(a) and 9 (b).

Table 9(a) downlink antenna port, space layer number indicator table

Table 9(b) antenna port in uplink direction, space layer number indication table

The present embodiment increases the indication overhead but is simple to implement.

All embodiments in the present invention are applicable to other RS designs besides uplink and downlink DMRS designs. For example, if a PTRS (phase tracking reference signal) or other reference signal also uses a symmetric design like uplink and downlink DMRS, the scheme of the present invention is also applicable to the reference signal.

Based on the same inventive concept, an embodiment of the present application further provides a network device 1700, as shown in fig. 17, which is a schematic structural diagram of the network device 1700, and the network device 1700 may be applied to execute the method executed by the network device in any of the embodiments. The network device 1700 includes one or more Remote Radio Units (RRUs) 1701 and one or more baseband units (BBUs) 1702. The RRU1701 may be referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc., which may include at least one antenna 17011 and a radio frequency unit 17012. The RRU1701 is mainly used for transceiving radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending signaling instructions described in the above embodiments to user equipment (i.e., a terminal). The BBU1702 is mainly used for performing baseband processing, controlling network devices, and the like. The RRU1701 and the BBU1702 may be physically located together or physically separated, i.e., distributed network devices.

The BBU1702 is a control center of a network device, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) may be used to control a network device to perform the method performed by the network device in any of the embodiments described above.

In one example, the BBU1702 may be formed by one or more boards, where the boards may collectively support a radio access network of a single access system (e.g., L TE network), and may also support radio access networks of different access systems, respectively, the BBU1702 further includes a memory 17021 and a processor 17022, where the memory 17021 is used to store necessary instructions and data, for example, the memory 17021 stores the parameter sets (including the first parameter set and the second parameter set) in the above embodiment, and the generated RS sequence.

Based on the same inventive concept, the embodiment of the present application further provides a terminal device 1800, as shown in fig. 18, which is a schematic structural diagram of the terminal device. For convenience of explanation, fig. 18 shows only main components of the terminal device. As shown in fig. 18, the terminal apparatus 1800 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used for processing the communication protocol and the communication data, controlling the whole terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to execute the method executed by the terminal device in any of the above embodiments. The memory is mainly used for storing software programs and data, for example, the codebook described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 18 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor in fig. 18 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present invention, the antenna and the control circuit having the transceiving function may be regarded as the transceiving unit 1801 of the terminal device 1800, and the processor having the processing function may be regarded as the processing unit 1802 of the terminal device 1800. As shown in fig. 18, the terminal device 1800 includes a transceiving unit 1801 and a processing unit 1802. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiving unit 1801 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiving unit 1801 may be regarded as a sending unit, that is, the transceiving unit 1801 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, or a sending circuit, and the like.

Based on the same inventive concept, the embodiment of the present application further provides an apparatus, which may be a network device or a terminal device, as shown in fig. 19, and the apparatus at least includes a processor 1901 and a memory 1902, further may include a transceiver 1903, and further may include a bus 1904.

The processor 1901, the memory 1902, and the transceiver 1903 are all connected by a bus 1904;

the memory 1902, for storing computer-executable instructions;

the processor 1901, configured to execute the computer executable instructions stored in the memory 1902;

when the apparatus 1900 is a network device, the processor 1901 executes the computer-executable instructions stored in the memory 1902, so that the apparatus 1900 executes the steps executed by the network device in any of the foregoing embodiments provided in this application, or causes the network device to deploy the functional units corresponding to the steps.

When the apparatus 1900 is a terminal device, the processor 1901 executes the computer-executable instructions stored in the memory 1902, so that the apparatus 1900 executes the steps executed by the terminal device in any of the foregoing embodiments provided in this application, or causes the terminal device to deploy the functional units corresponding to the steps.

A processor 1901, which may include different types of processors 1901, or include the same type of processors 1901; the processor 1901 may be any of the following: a Central Processing Unit (CPU), an ARM processor, a Field Programmable Gate Array (FPGA), a special processor, and other devices with computing and Processing capabilities. In an alternative embodiment, the processor 1901 may also be integrated as a many-core processor.

The memory 1902 may be any one or any combination of the following: a Random Access Memory (RAM), a Read Only Memory (ROM), a non-volatile memory (NVM), a Solid State Drive (SSD), a mechanical hard disk, a magnetic disk, and a whole array of magnetic disks.

The transceiver 1903 is used for data interaction between the apparatus 1900 and other devices; for example, if apparatus 1900 is a network device, the network device may perform the method performed by the network device in any of the embodiments described above; the network device performs data interaction with the terminal device through the transceiver 1903; if the apparatus 1900 is a terminal device, the terminal may perform the method performed by the terminal device in any of the embodiments described above; the terminal device performs data interaction with the network device through the transceiver 1903; the transceiver 1903 may be any one or any combination of the following: a network interface (e.g., an ethernet interface), a wireless network card, etc. having a network access function.

The bus 1904 may include an address bus, a data bus, a control bus, etc., which is represented by a thick line in fig. 19 for ease of illustration. Bus 1904 may be any one or any combination of the following: an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture, EISA) bus, and other devices for wired data transmission.

The embodiment of the application provides a computer readable storage medium, wherein a computer execution instruction is stored in the computer readable storage medium; the processor of the network device or the terminal device executes the computer execution instruction, so that the network device or the terminal device executes the steps executed by the network device or the terminal device in the above method provided by the embodiment of the present application, or the network device or the terminal device deploys the functional units corresponding to the steps.

Embodiments of the present application provide a computer program product comprising computer executable instructions stored in a computer readable storage medium. The processor of the network device or the terminal device may read the computer executable instructions from the computer readable storage medium; the processor executes the computer execution instruction, so that the network device or the terminal device executes the steps executed by the network device or the terminal device in the above method provided by the embodiment of the present application, or the functional unit corresponding to the steps is deployed on behalf of the network device or the terminal device.

The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g., from one website site, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DS L)) or wireless (e.g., infrared, wireless, microwave, etc.) manner to another website site, computer, server, or data center.

Based on the same inventive concept, the present application further provides a terminal device, as shown in fig. 20, including a processing unit 2001 and a transceiver unit 2002, which can be used to execute the method executed by the terminal device in any of the above embodiments.

The processing unit 2001 is configured to receive, by the transceiver unit 2002, configuration information sent by a network device, where the configuration information is used to indicate a number of spatial layers k1 in a first configuration relationship or indicate a number of spatial layers k2 in a second configuration relationship, the number of spatial layers k1 corresponds to k 1port numbers, the number of spatial layers k2 corresponds to k 2port numbers, the first configuration relationship includes a correspondence relationship between a number of spatial layers in a downlink direction and a port number, the second configuration relationship includes a correspondence relationship between a number of spatial layers in an uplink direction and a port number, k1 is a positive integer, and k2 is a positive integer;

the processing unit 2001 determines, according to the configuration information and the first configuration relationship, a first resource for receiving the downlink DMRS, where the first resource includes a resource mapped to the k 1port numbers, or determines, according to the configuration information and the second configuration relationship, a second resource for transmitting the uplink DMRS, where the second resource includes a resource mapped to the k 2port numbers;

the processing unit 2001 is configured to receive the downlink DMRS on the first resource or transmit the uplink DMRS on the second resource through the transceiver unit 2002;

Based on the same inventive concept, the present application further provides a network device, as shown in fig. 21, which includes a processing unit 2101 and a transceiver unit 2102, and is operable to execute the method executed by the network device in any of the embodiments described above.

The processing unit 2101 sends configuration information to a terminal device via the transceiving unit 2102, where the configuration information is used to indicate a number of spatial layers k1 in a first configuration relationship or indicate a number of spatial layers k2 in a second configuration relationship, where the number of spatial layers k1 corresponds to k 1port numbers, the number of spatial layers k2 corresponds to k 2port numbers, the first configuration relationship includes a correspondence relationship between the number of spatial layers in a downlink direction and the port number, the second configuration relationship includes a correspondence relationship between the number of spatial layers in an uplink direction and the port number, k1 is a positive integer, and k2 is a positive integer;

the processing unit 2101 transmits a downlink DMRS on a first resource corresponding to the configuration information and the first configuration relationship, including a resource mapped to the k 1port numbers, or receives an uplink DMRS on a second resource corresponding to the configuration information and the second configuration relationship, including a resource mapped to the k 2port numbers, by using the transceiving unit 2102;

Based on the same inventive concept, the present application further provides a terminal device, as shown in fig. 22, including a processing unit 2201 and a transceiving unit 2202, which can be used to execute the method executed by the terminal device in any of the above embodiments.

The processing unit 2201 determines, according to first indication information and second indication information, a resource for transmitting a DMRS, where the first indication information indicates a first port configuration, and the second indication information indicates information related to the resource corresponding to the first port configuration or information related to a second port configuration corresponding to the first port configuration;

the processing section 2201 transmits the DMRS through the transmitting/receiving section 2202 based on the determined resource.

Optionally, the information related to the second port configuration includes a port offset; the processing unit 2201: determining the configuration of the first port according to the first indication information; determining the second port configuration according to the port offset and the first port configuration; and determining that the resource corresponding to the second port configuration is a resource for transmitting the DMRS.

Optionally, the related information of the resource corresponding to the first port configuration includes a resource offset, where the resource offset is a time domain symbol offset and/or a frequency domain offset; the processing unit 2201 is configured to: determining the configuration of the first port according to the first indication information; and determining resources for transmitting the DMRS according to the resources corresponding to the first port configuration and the resource offset.

Based on the same inventive concept, the present application further provides a network device, as shown in fig. 23, including a processing unit 2301 and a transceiving unit 2302, which can be used to execute the method executed by the network device in any of the above embodiments.

The processing unit 2301 sends first indication information and second indication information to the terminal device through the transceiving unit 2302, where the first indication information indicates a first port configuration, and the second indication information indicates related information of a resource corresponding to the first port configuration or related information of a second port configuration corresponding to the first port configuration;

Optionally, the information related to the second port configuration includes a port offset; and configuring corresponding resources for the second port by the resources of the DMRS, wherein the second port configuration corresponds to the first port configuration and the port offset.

Optionally, the related information of the resource corresponding to the first port configuration includes a resource offset, where the resource offset is a time domain symbol offset and/or a frequency domain offset; and the resource of the DMRS corresponds to the resource offset and the resource corresponding to the first port configuration.

Based on the same inventive concept, the present application further provides a terminal device, as shown in fig. 24, including a processing unit 2401 and a transceiving unit 2402, which can be used to execute the method executed by the terminal device in any of the above embodiments.

Processing unit 2401 determines resources for transmitting the DMRS according to first indication information and second indication information, where the second indication information indicates a first set of at least two sets, the at least two sets are sets of port configurations of the DMRS, and the first indication information indicates the port configuration of the DMRS in the first set;

processing section 2401 transmits the DMRS through transceiving section 2402 according to the determined resource.

Optionally, the at least two sets further include a second set, where the first set includes x port configurations corresponding to the number n of spatial layers, and the second set includes y port configurations corresponding to the number n of spatial layers, and at least one of the x port configurations is different from at least one of the y port configurations.

Based on the same inventive concept, the present application further provides a network device, as shown in fig. 25, including a processing unit 2501 and a transceiver unit 2502, which can be used to execute the method executed by the network device in any of the embodiments described above.

The processing unit 2501 sends, to the terminal device through the transceiver unit 2502, first indication information and second indication information, where the second indication information indicates a first set of at least two sets, the at least two sets are sets of port configurations of DMRS, and the first indication information indicates a port configuration of the DMRS in the first set;

Based on the same inventive concept, the present application further provides a terminal device, as shown in fig. 26, including a processing unit 2601 and a transceiving unit 2602, which can be used to execute the method executed by the terminal device in any of the embodiments described above.

The processing unit 2601 determines DMRS transmission resources according to first indication information and second indication information, where the second indication information indicates a first method of at least two different DMRS port resource mapping methods, and the first indication information indicates a first port configuration;

processing section 2601 transmits the DMRS through transceiving section 2602 according to the determined resource.

Based on the same inventive concept, the present application further provides a network device, as shown in fig. 27, including a processing unit 2701 and a transceiver unit 2702, which are configured to perform the method performed by the network device in any of the embodiments described above.

The processing unit 2701 sends first indication information and second indication information to the terminal device through the transceiving unit 2702, where the second indication information indicates a first method of at least two different DMRS port resource mapping methods, and the first indication information indicates a first port configuration;

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in embodiments of the present invention may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

The various illustrative logical units and circuits described in connection with the embodiments disclosed herein may be implemented or operated through the design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be disposed in a terminal device. In the alternative, the processor and the storage medium may reside as discrete components in a terminal device.

In one or more exemplary designs, the functions described in the embodiments of this invention may be implemented in hardware, software, firmware, or any combination thereof, if implemented in software, these functions may be stored on a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium including a computer storage medium and a communications medium that facilitates transfer of a computer program from one place to another.

The foregoing description of the invention is provided to enable any person skilled in the art to make or use the invention, and any modifications based on the disclosed content should be considered obvious to those skilled in the art, and the general principles defined by the present invention may be applied to other variations without departing from the spirit or scope of the invention. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles of the invention and novel features disclosed.

Claims

1. A method for reference signal mapping, the method comprising:

2. The method of claim 1,

in the first configuration relationship, i port numbers corresponding to at least one spatial layer number i are the smallest i port numbers in j port numbers corresponding to at least one spatial layer number j, i is a positive integer not greater than j, and j is a positive integer not greater than n; alternatively, the first and second electrodes may be,

3. The method according to claim 1 or 2,

in the second configuration relationship, the r port numbers corresponding to the at least one spatial layer number r are the smallest r port numbers in the s port numbers corresponding to the at least one spatial layer number s, r is a positive integer not greater than s, and s is a positive integer not greater than m; alternatively, the first and second electrodes may be,

4. A method for reference signal mapping, the method comprising:

5. The method of claim 4,

6. The method according to claim 4 or 5,

7. A method for reference signal mapping, the method comprising:

the terminal equipment determines resources for transmitting the DMRS according to first indication information and second indication information, wherein the first indication information indicates first port configuration, and the second indication information indicates related information of the resources corresponding to the first port configuration or indicates related information of second port configuration corresponding to the first port configuration; the relevant information of the resource corresponding to the first port configuration comprises a resource offset, and the resource offset is a time domain symbol offset and/or a frequency domain offset; the information related to the second port configuration comprises a port offset;

8. The method of claim 7, wherein the terminal device determines the resources for transmitting the DMRS according to the first indication information and the second indication information, and comprises:

9. The method of claim 7, wherein the terminal device determines the resources for transmitting the DMRS according to the first indication information and the second indication information, and comprises:

10. A method for reference signal mapping, the method comprising:

the first indication information and the second indication information are used for indicating resources of terminal equipment for transmitting DMRS;

wherein the information related to the second port configuration comprises a port offset; the resources of the DMRS are corresponding resources configured for the second port, and the second port configuration corresponds to the first port configuration and the port offset; alternatively, the first and second electrodes may be,

the related information of the resource corresponding to the first port configuration comprises a resource offset, and the resource offset is a time domain symbol offset and/or a frequency domain offset; and the resource of the DMRS corresponds to the resource offset and the resource corresponding to the first port configuration.

11. A method for reference signal mapping, the method comprising:

12. The method of claim 11,

the at least two sets further include a second set, the first set including x port configurations corresponding to a number n of spatial layers, the second set including y port configurations corresponding to the number n of spatial layers, at least one of the x port configurations being different from at least one of the y port configurations.

13. A method for reference signal mapping, the method comprising:

14. The method of claim 13,

15. A method for reference signal mapping, the method comprising:

16. A method for reference signal mapping, the method comprising:

17. A terminal device, characterized in that it comprises at least a processor for executing the reference signal mapping method of any of claims 1 to 3.

18. A network device, characterized in that it comprises at least a processor for executing the reference signal mapping method of any of claims 4 to 6.

19. A terminal device, characterized in that it comprises at least a processor for executing the reference signal mapping method of any of claims 7 to 9.

20. A network device comprising at least a processor configured to perform the reference signal mapping method of claim 10.

21. A terminal device, characterized in that it comprises at least a processor for executing the reference signal mapping method according to any of claims 11 to 12.

22. A network device, characterized by comprising at least a processor configured to perform the reference signal mapping method of any of claims 13 to 14.

23. A terminal device, characterized in that it comprises at least a processor for executing the reference signal mapping method of claim 15.

24. A network device comprising at least a processor configured to perform the reference signal mapping method of claim 16.