WO2018223891A1

WO2018223891A1 - Reference signal transmission method, apparatus and device

Info

Publication number: WO2018223891A1
Application number: PCT/CN2018/089262
Authority: WO
Inventors: 刘建琴; 贺传峰; 李雪茹
Original assignee: 华为技术有限公司
Priority date: 2017-06-05
Filing date: 2018-05-31
Publication date: 2018-12-13
Also published as: CN108989008B; CN108989008A

Abstract

Provided in the present application are a reference signal transmission method, apparatus and device. The method comprises: a first network device configures a reference signal resource for a second network device, the reference signal resource comprising at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of a reference signal; the first network device sends configuration information of the reference signal resource to the second network device; and the first network device sends the reference signal to the second network device by using the reference signal resource. Since the first network device can configure resources, such as a time domain resource, a frequency domain resource, a code domain resource and port information for sending a reference signal, for the second network device in real time according to a specific channel measurement requirement, the invention can adaptively meet different channel measurement requirements. Moreover, the configuration method is scalable and is highly flexible.

Description

Reference signal transmission method, device and device

This application claims the priority of the Chinese Patent Application filed on June 5, 2017, the Chinese Patent Office, the application number is 201710435763.2, and the application name is "the transmission method, device and device of the reference signal", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to communication technologies, and in particular, to a method, an apparatus, and a device for transmitting a reference signal.

Background technique

In communication systems, reference signals are typically used for channel measurements, and different types of reference signals have different effects. Among them, a reference signal for measuring channel state information is called a Channel State Information Reference Signal (CSI-RS). In the communication system, the user needs to measure the channel state information (CSI) of the large antenna port number, and also the requirement of fast beam scanning for effective beam management.

When the UE needs to measure the CSI of the large antenna port number, to ensure the transmit power of the CSI-RS of each port, the CSI-RS of one port may be sent through a group of resource elements (Resource Element, RE). The transmit power is increased, and the CSI-RSs of different ports can be multiplexed on a group of identical REs by means of Code Division Multiplexing (CDM). For example, R12 supports CDM2, that is, CSI-RS of two ports is multiplexed on 2 REs by orthogonal codes of length 2, and R13 supports CDM4, that is, CSI-RSs of 4 ports pass orthogonal codes of length 4. Multiplexed on 4 REs. FIG. 1 is a schematic diagram of transmission of a 16-port CSI-RS using CDM2, and FIG. 2 is a schematic diagram of transmission of a 12-port CSI-RS using CDM2, as shown in FIG. 1 and FIG. 2, the port number of the 16-port CSI-RS is 0. The port number of the -15, 12-port CSI-RS is 0-11. Each of the two ports uses the CDM2 method to transmit CSI-RS on two REs with the same subcarrier and adjacent symbols. For example, Figure 1 and RE set {0, 1}, {2, 3}, {4, 5}, {6, 7}, {8, 9}, {10, 11}, {12, 13}, {14 , 15} for CSI-RS transmission for every two ports. 3 is a schematic diagram of transmission of a 16-port CSI-RS using CDM4, and FIG. 4 is a transmission diagram of a 12-port CSI-RS using CDM4, wherein each of the four ports transmits a CSI-RS by using CDM4, as shown in FIG. 3 and FIG. As shown in FIG. 4, the set of 4 REs with the same letter is used to transmit the CSI-RS in a CDM4 manner for every 4 ports.

When the UE needs fast beam scanning, the resource elements transmitting CSI-RS should be located in as few Orthogonal Frequency Division Multiplexing (OFDM) symbols as possible, such as resource elements for transmitting each CSI-RS. The mapping is defined on one OFDM symbol, and the UE can perform fast beam scanning and detection on the receiving side by transmitting repeated multiple CSI-RSs on consecutive multiple symbols.

However, in the prior art, the resource configuration of the CSI-RS allocated by the base station for each UE is fixed, that is, the number of symbols and the symbol position of the resource unit used for transmitting the CSI-RS are fixed, and therefore, for the user. Different requirements, such as CSI measurement requirements, fast beam scanning requirements, etc., the UE cannot implement different requirements according to the resources of the CSI-RS allocated by the base station.

Summary of the invention

The present application provides a method, an apparatus, and a device for transmitting a reference signal, which are used to solve the problem that the UE cannot implement the different requirements of the user according to the resource configuration of the CSI-RS allocated by the base station in the prior art.

A first aspect of the present application provides a method for transmitting a reference signal, where the method includes:

The first network device configures a reference signal resource for the second network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

Transmitting, by the first network device, configuration information of the reference signal resource to the second network device;

The first network device sends the reference signal to the second network device by using the reference signal resource.

In the above solution, the first network device can configure the time domain resource, the frequency domain resource, the code domain resource, and the port information of the reference signal for the second network device according to the specific channel measurement requirement, and can be adaptive. Meet different channel measurement requirements, and the configuration method is scalable and flexible.

Optionally, if the reference signal resource includes a time domain resource, the time domain resource includes at least one of a time unit number and a time unit location information for sending the reference signal.

Optionally, if the reference signal resource includes a time domain resource and a frequency domain resource, when the configured time unit of the reference signal is greater than or equal to 2, at least one P-port first reference signal resource and one a second reference signal resource of the P port, where the first reference signal resource and the second reference signal resource have at least one same time-frequency resource unit; wherein P is a positive integer greater than or equal to 2.

Optionally, the orthogonal reference code mapping of the first reference signal resource and the second reference signal resource on the at least one same time-frequency resource unit is the same.

In the above solution, the first network device dynamically allocates the time domain resource and the frequency domain resource to the second network device according to the channel measurement requirement, which can meet different channel measurement requirements of the user, and may overlap in different reference signal resources. The time-frequency resource unit has the same configuration of overlapping time-frequency resource units, so that different users can use the same time-frequency resource unit, thereby improving the utilization of time-frequency resources.

Optionally, if the reference signal resource includes a code domain resource, the code domain resource includes at least one of a length and a mapping pattern of the orthogonal spreading code corresponding to the reference signal.

Optionally, the code domain resource further includes: a code domain resource of the reference signal on each S time unit of the T time units; where S is a positive integer greater than or equal to 1 and less than or equal to T.

Optionally, if the reference signal resource includes the port information, the port information is port information of the reference signal on T time units, and the port information includes the reference signal in T time units The number of ports on, the reference signal is at least one of a port density, a port mapping, and a port interval on each of the T time units; wherein S is a positive integer greater than or equal to 1 and less than or equal to T.

In the foregoing solution, the first network device may dynamically configure the code domain resource and/or the port information for the second network device, and may allocate the reference signal resource to the user from different resource perspectives, so that the reference signal resource is more flexible and flexible. Convenience.

Optionally, the first network device sends the configuration information of the reference signal resource to the second network device, including:

The first network device sends configuration information of the reference signal resource to the second network device by using at least one of higher layer signaling and physical layer signaling.

In the above solution, the first network device sends the configuration information of the reference signal resource to the second network device by using at least one of the high layer signaling and the physical layer signaling, so that the configuration information of the separately transmitted reference signal resource occupies the transmission resource. In this case, transmission resources are saved, thereby improving transmission resource utilization.

A second aspect of the present application provides a method for transmitting a reference signal, where the method includes:

The second network device receives configuration information of the reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

The second network device receives the reference signal sent by the first network device according to the reference signal resource.

In the foregoing solution, the reference signal resource for transmitting the reference signal is configured by the first network device for the second network device according to the specific channel measurement requirement, including the time domain resource, the frequency domain resource, and the code domain of the reference signal. Resources such as resources and port information can adaptively meet different channel measurement requirements, and the configuration method can be extended and the flexibility is good.

A third aspect of the present application provides a transmission device for a reference signal, where the device is a first network device, and the device includes:

a configuration module, configured to configure, by the second network device, a reference signal resource, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

a first sending module, configured to send configuration information of the reference signal resource to the second network device;

And a second sending module, configured to send the reference signal to the second network device by using the reference signal resource.

Optionally, the first sending module is specifically configured to send configuration information of the reference signal resource to the second network device by using at least one of high layer signaling and physical layer signaling.

The implementation and the beneficial effects of the transmission device of the reference signal provided by the foregoing solution are similar to the implementation and the beneficial effects of the transmission method of the reference signal provided by the first aspect, and details are not described herein again.

A fourth aspect of the present application provides a transmission device for a reference signal, where the device is a second network device, and the device includes:

a first receiving module, configured to receive configuration information of a reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal ;

And a second receiving module, configured to receive, according to the reference signal resource, the reference signal sent by the first network device.

The implementation and the beneficial effects of the transmission device of the reference signal provided by the foregoing solution are similar to the implementation and the beneficial effects of the transmission method of the reference signal provided by the second aspect, and details are not described herein again.

DRAWINGS

FIG. 1 is a schematic diagram of transmission of a 16-port CSI-RS using CDM2;

2 is a schematic diagram of transmission of a 12-port CSI-RS using CDM2;

FIG. 3 is a schematic diagram of transmission of a 16-port CSI-RS using CDM4;

4 is a schematic diagram of transmission of a 12-port CSI-RS using CDM4;

FIG. 5 is a schematic diagram of an application scenario of a method for transmitting reference information provided by the present application;

FIG. 6 is a flowchart of a method for transmitting a reference signal according to an embodiment of the present application;

FIG. 7a is a schematic diagram of a CDM type according to an embodiment of the present application;

FIG. 7b is a schematic diagram of a CDM type according to another embodiment of the present disclosure;

FIG. 7c is a schematic diagram of a CDM type according to still another embodiment of the present application;

FIG. 8 is a flowchart of a method for transmitting a reference signal according to another embodiment of the present application;

FIG. 9 is a block diagram of a transmission device for a reference signal according to an embodiment of the present application;

FIG. 10 is a block diagram of a transmission device of a reference signal according to another embodiment of the present application; FIG.

FIG. 11 is a block diagram of a transmission device of a reference signal according to an embodiment of the present application;

FIG. 12 is a block diagram of a transmission device of a reference signal according to another embodiment of the present application.

detailed description

The transmission method of the reference signal provided by the present application is applicable to a wireless communication system, such as a Long Term Evolution (LTE) system, a Wideband Code Division Multiple Access (WCDMA) system, or the like. FIG. 5 is a schematic diagram of an application scenario of a method for transmitting a reference signal according to the present application. As shown in FIG. 5, the scenario includes a base station and a user equipment (User Equipment, UE), where the UE may be a computer, a mobile phone, a tablet computer, or the like. . The base station sends data to the UE as downlink transmission, and the UE sends data to the base station as uplink transmission.

FIG. 6 is a flowchart of a method for transmitting a reference signal according to an embodiment of the present application. The embodiment relates to a process in which a first network device configures a reference signal resource, sends configuration information of a reference signal resource to a second network device, and sends a reference signal to the second network device by using the configured reference signal resource, as shown in FIG. 6. As shown, the method includes:

Step 101: The first network device configures a reference signal resource for the second network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal.

In this embodiment, the first network device may be a base station, and the second network device may be a UE. In the communication system, when it is required to use the reference signal for measurement, the base station configures the reference signal resource for the UE in real time according to specific measurement requirements, for example, when the UE needs to perform CSI measurement based on the reference signal, optionally, for performing CSI The number of ports of the measured reference signal is at least 2 or more.

Different kinds of reference signals are usually used in communication systems. A type of reference signal is used for channel quality measurement, such as radio resource management (RRM) related measurement, so that user channel quality measurement and cell selection and handover can be implemented, and such reference signal is specifically like a cell-specific reference signal (Cell). -specific Reference Signal, CRS).

Another type of reference information is used for the measurement of channel state information to enable scheduling of the terminal device. Specifically, the terminal device may obtain channel state information (CSI) based on channel quality measurement of a channel state information reference signal (CSI-RS). The reference signal for CSI measurement may be CSI-S.

To ensure the transmit power of the CSI-RS of each port, the base station may configure a 4-symbol time domain resource for the UE, that is, the resource unit transmitting each CSI-RS port is mapped on 4 OFDM symbols; or, when the UE needs to be fast In beam scanning, resource unit definitions for transmitting each CSI-RS port are mapped on one OFDM symbol.

Optionally, if the reference signal resource includes a time domain resource, the time domain resource includes at least one of a time unit number and a time unit location information for transmitting the reference signal. Wherein, the time unit may include one or more OFDM symbols. For example, the time domain resource may include 2 time units, each time unit includes 2 OFDM symbols, the position code of the first time unit is 0, 1, and the position code of the second time unit is 2, 3. Optionally, each time unit may also include only 1 OFDM symbol. In addition, the time unit can also include one or more time slots. In another embodiment, the time unit may further include one or more subframes, which are not specifically limited herein.

Further, if the reference signal resource includes a time domain resource and a frequency domain resource, when the number of time units of the configured reference signal is greater than or equal to 2, at least one P-port first reference signal resource and one P-port second The reference signal resource has at least one of the same time-frequency resource unit in the first reference signal resource and the second reference signal resource; wherein P is a positive integer greater than or equal to 2. That is, in the time unit of the configured reference signal, the time-frequency resources in the reference signal resource configuration of the at least two P ports are partially overlapped, that is, there are some time-frequency resources in the reference signal resource configuration of the two P ports. The units are the same. Optionally, it is not excluded that some of the time-frequency resource units in the reference signal resource configuration with T P ports are the same, where T is a positive integer greater than 2.

In this embodiment, the time domain resource is an OFDM symbol for transmitting a reference signal, the frequency domain resource is a subcarrier for transmitting a reference signal, and the time-frequency resource unit is a resource unit composed of a time domain OFDM symbol and a subcarrier, as shown in FIG. As shown, one time domain OFDM symbol and one subcarrier constitute one resource unit, and the time frequency resource unit of one reference signal may include one or more such resource units. If the number of time units for transmitting the reference signal is greater than or equal to 2, at least one first reference signal resource of the P port configured by the base station for the UE and the second reference signal resource of the P port configured by the base station for the UE overlap. The frequency resource unit, for example, the number of time units is 4, P=2, and the time-frequency resource unit of the first reference signal resource of the 2-port configured by the base station is 0, 1, and the time-frequency resource unit of the second reference signal resource The coded as 1, 2, the time-frequency resource unit shared by the first reference signal resource and the second reference signal resource is 1.

Still further, the orthogonal reference code mapping of the first reference signal resource and the second reference signal resource on the at least one same time-frequency resource unit is the same.

The orthogonal spreading code mapping includes a CDM dimension and a CDM type, the CDM dimension is a length of an orthogonal spreading code corresponding to the CDM, the CDM type represents a mapping manner of the orthogonal spreading code, and the first reference signal resource and the second reference The CDM dimension and the CDM type of the orthogonal spreading code of the signal resource on the same time-frequency resource unit described above are the same. Figure 7a, Figure 7b, and Figure 7c are three CDM types, and other CDM types can be set as required. The four time-frequency resource units in FIG. 7a occupy one time unit, which can be defined as CDM type 1; the four time-frequency resource units in FIG. 7b occupy two time units, which can be defined as CDM type 2; FIG. 7c The four time-frequency resource units occupy four time units and can be defined as CDM type 3. When a single time unit is used to transmit the reference signal in order to increase the scanning rate, CDM type 1 can be considered. When multiple reference units are used to transmit the reference signal in order to increase the transmission power, CDM type 2 or CDM type can be considered. 3.

Optionally, in this embodiment, the base station may determine the CDM dimension and the minimum granularity of the shared time unit existing in the N (N is an integer greater than or equal to 1) time units occupied by the reference signal resources configured by the base station for the UE. CDM type. For example, when the reference signal resource configured by the base station occupies 4 time units, when the minimum granularity of the shared time unit in the 4 time units is 1, the CDM type 1 shown in FIG. 7a is uniformly used on the 4 time units. When the minimum granularity of the shared time unit is 2, CDM type 2 as shown in FIG. 7b is uniformly used on the four time units.

Optionally, in this embodiment, the base station may further determine the N according to the user sharing situation of each time unit in the N (N is an integer greater than or equal to 1) time units occupied by the reference signal resources configured by the base station for the UE. The orthogonal spreading code mapping of each time unit in the time unit, for example, the reference signal resource configured by the base station occupies 4 time units, and the first time unit and the second time unit are shared by other users, then at the first The CDM type 1 as shown in FIG. 7a is used on both the time unit and the second time unit, and the CDM shown in FIG. 7b is configured on the third time unit and the fourth time unit that are not shared by other users. Type 2.

Optionally, if the reference signal resource includes a code domain resource, the code domain resource includes at least one of a length of the orthogonal spreading code corresponding to the reference signal and a mapping pattern.

In this embodiment, the mapping pattern is used to represent the CDM dimension and the CDM type, and the base station may configure one of the multiple candidate mapping patterns as a reference mapping signal as the actual mapping pattern. For example, when the base station configures the actual mapping pattern of the reference signal on the four time units, the candidate mapping pattern may include: 1+1+2, 2+2, 2+1+1, 1+1+1+1, 1 +2+1, where 1+1+2 represents CDM type 1 on the first time unit and the second time unit, and CDM type 2 on the third time unit and the fourth time unit ;1+2+1 represents the use of CDM type 1 on the first time unit and the fourth time unit, and the CDM type 2 on the second time unit and the third time unit, and so on. The base station may determine the mapping pattern of the reference signal resource on each time unit according to the case where each time unit is shared by other users.

Optionally, the base station may notify the user equipment of the candidate mapping pattern by using at least one of high layer signaling and physical layer signaling.

Further, in this embodiment, the code domain resource further includes: a code domain resource of the reference signal on each S time unit in the T time units; wherein S is a positive integer greater than or equal to 1 and less than or equal to T.

In this embodiment, the code domain resource includes code domain resources on one or more time units. For example, T=12, S=4, the reference signal resource configured by the base station for the reference signal includes 12 time units, and each of the 4 time units is multiplexed into a set of transmission resources for transmitting the reference signal, and the code domain resources include Code domain resources on 4 time units. Or, for example, T=4, S=2, the reference signal resource configured by the base station for the reference signal includes 4 time units, and each 2 time units are multiplexed into a set of transmission resources for transmitting the reference signal, and the code domain resource is used. The code domain resource is included in every 2 time units. Or, for example, T=4, S=1, the reference signal resource configured by the base station for the reference signal includes 4 time units, and each time unit is a group of transmission resources. For transmitting the reference signal, the code domain resource includes the code domain resource on each time unit.

Optionally, if the reference signal resource includes port information, the port information is port information of the reference signal on the T time units, and the port information includes the number of ports of the reference signal on the T time units, and the reference signal is in T time units. At least one of a port density, a port mapping, and a port interval on each of the S time units; wherein S is a positive integer greater than or equal to 1 and less than or equal to T.

In this embodiment, the port information includes all port information of the reference signal on T time units, wherein the number of ports of the reference signal on the T time units indicates how many ports are used to transmit the reference on the T time units. The signal and port density can be 1RE/RB/port, (1/2) RE/RB/port, etc., and the smaller port density can reduce the overhead of the reference signal. The port mapping includes the frequency domain priority port allocation mode and the time domain priority port allocation mode. The frequency domain priority port allocation mode refers to the port mapping when the frequency domain mapping is first performed, and then the time domain mapping, the time domain priority port. The allocation method refers to mapping in the time domain first in the time domain mapping, and then mapping in the frequency domain. For example, the reference signal resources configured by the base station occupy 4 time units. If the frequency domain priority port allocation mode is adopted, N references are used. The signal port is preferentially allocated on the frequency domain resource of one time unit, and then distributed on multiple time units. If the time domain priority port allocation mode is adopted, the N reference signal ports are preferentially allocated on four time units, and then allocated to multiple frequency domain resources in one time unit.

The port interval is the number of resource units between two adjacent ports that transmit the reference signal. For example, if there are two resource units between two adjacent ports, the port interval is 2, if there are two adjacent ports. 4 resource units, the port interval is 4. The large port spacing is suitable for fast beam scanning requirements, while the small antenna spacing is suitable for accurate channel quality measurement requirements. For example, UE1 shares with other UEs on the first time unit of the 4 time units, while other UEs There is a need for a fast scan beam, and the base station configures the port interval of the UE1 on the first time unit to be a large port interval.

Step 102: The first network device sends configuration information of the reference signal resource to the second network device.

In this embodiment, the configuration information of the reference signal resource may include at least one of time domain resource information, frequency domain resource information, code domain resource information, and port information, where the time domain resource information includes the number and location of the time unit. The information, the number of OFDM symbols included in each time unit, and the like, the frequency domain resource information may include the number of subcarriers, the encoding of the subcarriers, and the like, and the code domain resource information includes the length of the orthogonal spreading code and the type of the mapping pattern, and the like. Port information includes information such as port number, port density, port mapping, and port interval.

Optionally, the first network device sends the configuration information of the reference signal resource to the second network device, where the first network device sends the configuration information of the reference signal resource to the at least one of the high layer signaling and the physical layer signaling. Second network device.

In this embodiment, the first network device may add the configuration information of the reference signal resource to the high layer signaling or the physical layer signaling to send to the second network device, for example, the downlink control information (Downlink Control Information, DCI) The configuration information of the reference signal resource is sent to the UE.

Step 103: The first network device sends a reference signal to the second network device by using the reference signal resource.

In this embodiment, the first network device sends the reference signal to the second network device by using the configured reference signal resource, so that the second network device uses the reference signal to perform channel measurement.

In the method for transmitting a reference signal provided by the embodiment of the present application, the first network device configures a reference signal resource for the second network device, and sends configuration information of the reference signal resource to the second network device, and uses the reference signal resource to the second network device. Sending the reference signal, the first network device can configure, for the second network device, the time domain resource, the frequency domain resource, the code domain resource, and the port information, which are used to transmit the reference signal, according to the specific channel measurement requirement, and can adaptively satisfy different resources. Channel measurement requirements, and the configuration method is scalable and flexible.

FIG. 8 is a flowchart of a method for transmitting a reference signal according to another embodiment of the present application. The embodiment is a method of the second network device side corresponding to the embodiment shown in FIG. 6, and relates to a process in which the second network device receives the configuration information of the reference signal resource, and receives the reference signal sent by the first network device according to the reference signal resource. As shown in FIG. 8, the method includes:

Step 201: The second network device receives configuration information of the reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal.

In this embodiment, a detailed description of the reference signal resource may be referred to the detailed description in the embodiment shown in FIG. 6, and details are not described herein again.

Step 201: The second network device receives the reference signal sent by the first network device according to the configuration information of the received reference signal resource.

The method for transmitting a reference signal provided by the embodiment of the present disclosure, the second network device receives the configuration information of the reference signal resource sent by the first network device, and receives the reference signal sent by the first network device according to the configuration information of the received reference signal resource, The reference signal resource is a resource configured by the first network device for the second network device according to the specific channel measurement requirement, and the reference signal resource receives the reference signal, and can adaptively meet different channel measurement requirements, and the configuration is further configured. The method is scalable and flexible.

FIG. 9 is a block diagram of a transmission device for a reference signal according to an embodiment of the present application. The transmission device of the reference signal is a first network device. As shown in FIG. 9, the device includes a configuration module 11, a first sending module 12, and a second transmitting module 13. The configuration module 11 is configured to configure a reference signal resource for the second network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal. The first sending module 12 is configured to send configuration information of the reference signal resource to the second network device. The second sending module 13 is configured to send a reference signal to the second network device by using the reference signal resource.

Optionally, if the reference signal resource includes a time domain resource, the time domain resource includes at least one of a time unit number and a time unit location information for transmitting the reference signal.

Further, if the reference signal resource includes a time domain resource and a frequency domain resource, when the number of time units of the configured reference signal is greater than or equal to 2, at least one P-port first reference signal resource and one P-port second The reference signal resource has at least one of the same time-frequency resource unit in the first reference signal resource and the second reference signal resource; wherein P is a positive integer greater than or equal to 2.

That is, the orthogonal spreading code mapping on the time-frequency resource unit corresponding to the first reference signal resource and the orthogonal spreading code mapping on the time-frequency resource unit corresponding to the second reference signal resource overlap in the two reference signal resources. The time-frequency resource unit is the same. Optionally, if the reference signal resource includes a code domain resource, the code domain resource includes at least one of a length of the orthogonal spreading code corresponding to the reference signal and a mapping pattern.

Further, the code domain resource further includes: a code domain resource of each of the S time units of the reference signal in the T time units; wherein S is a positive integer greater than or equal to 1 and less than or equal to T.

Optionally, the first sending module 12 is specifically configured to send, by using at least one of the high layer signaling and the physical layer signaling, configuration information of the reference signal resource to the second network device.

The transmission device of the reference signal provided in this embodiment may be used to perform the technical solution in the foregoing embodiment shown in FIG. 6. The implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.

FIG. 10 is a block diagram of a transmission device of a reference signal according to another embodiment of the present application. As shown in FIG. 10, the apparatus includes a first receiving module 21 and a second receiving module 22. The first receiving module 21 is configured to receive configuration information of a reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal. The second receiving module 22 is configured to receive the reference signal sent by the first network device according to the reference signal resource.

The transmission device of the reference signal provided in this embodiment may be used to perform the technical solution in the foregoing embodiment shown in FIG. 8. The implementation principle and the technical effect are similar to the method embodiment, and details are not described herein again.

FIG. 11 is a block diagram of a transmission device of a reference signal according to an embodiment of the present application. As shown in FIG. 11, the device includes a processor 31 and a transmitter 32. The processor 31 is configured to configure a reference signal resource for the second network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal. The transmitter 32 is configured to send configuration information of the reference signal resource to the second network device, and send the reference signal to the second network device by using the reference signal resource.

Further, if the reference signal resource includes a time domain resource and a frequency domain resource, when the number of time units of the configured reference signal is greater than or equal to 2, at least one P-port first reference signal resource and one P-port second The reference signal resource has at least one identical time-frequency resource unit in the first reference signal resource and the second reference signal resource; wherein P is a positive integer greater than or equal to 2.

Optionally, the transmitter 32 sends the configuration information of the reference signal resource to the second network device, where the transmitter 32 sends the configuration information of the reference signal resource to the second by using at least one of the high layer signaling and the physical layer signaling. Internet equipment.

FIG. 12 is a block diagram of a transmission device of a reference signal according to another embodiment of the present application. As shown in FIG. 12, the device includes a processor 41 and a receiver 42. The processor 41 controls the receiver 42 to receive the configuration information of the reference signal resource sent by the first network device, and receives the reference signal sent by the first network device according to the reference signal resource; the reference signal resource includes the time domain resource of the reference signal and the frequency domain resource. At least one of a code domain resource and port information.

The present application also provides a readable storage medium, where the readable storage medium stores instructions, when the at least one processor of the transmission device that sends the reference signal executes the instruction, the transmission device of the reference signal performs the foregoing method embodiment. The method of transmitting the reference signal provided.

The application also provides a program product comprising instructions stored in a readable storage medium. At least one processor of the transmission device that transmits the reference signal can read the instruction from the readable storage medium and execute the instruction such that the transmission device that issues the reference signal implements the transmission method of the reference signal provided in any of the method embodiments.

In the specific implementation of the transmission device of the reference signal, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processor, digital signal processor (English: Digital Signal) Processor, referred to as DSP, and Application Specific Integrated Circuit (ASIC). The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with the present application may be directly embodied by hardware processor execution or by a combination of hardware and software modules in a processor.

All or part of the steps of implementing the above method embodiments may be performed by hardware associated with the program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the foregoing method embodiments are performed; and the foregoing memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

Claims

A method for transmitting a reference signal, characterized in that the method comprises:

The first network device configures a reference signal resource for the second network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

Transmitting, by the first network device, configuration information of the reference signal resource to the second network device;

The first network device sends the reference signal to the second network device by using the reference signal resource.
The method according to claim 1, wherein if the reference signal resource comprises a time domain resource, the time domain resource comprises at least one of a time unit number and a time unit location information for transmitting the reference signal.
The method according to claim 2, wherein if the reference signal resource comprises a time domain resource and a frequency domain resource, when the number of time units of the reference signal configured is greater than or equal to 2, at least one P exists. a first reference signal resource of the port and a second reference signal resource of the P port, where the first reference signal resource and the second reference signal resource have at least one same time-frequency resource unit; wherein, P is greater than or equal to A positive integer of 2.
The method according to claim 3, wherein the first reference signal resource and the second reference signal resource have the same orthogonal spreading code mapping on the at least one same time-frequency resource unit. .
The method according to claim 1, wherein if the reference signal resource comprises a code domain resource, the code domain resource comprises at least one of a length of a orthogonal spreading code corresponding to the reference signal and a mapping pattern. .
The method according to claim 5, wherein the code domain resource further comprises: a code domain resource of the reference signal on each S time unit of T time units; wherein S is greater than or equal to 1 A positive integer less than or equal to T.
The method according to claim 1, wherein if the reference signal resource comprises the port information, the port information is port information of the reference signal on T time units, and the port information comprises At least one of a number of ports of the reference signal on the T time units, a port density of the reference signal on each of the S time units, a port mapping, and a port interval; wherein S is greater than A positive integer equal to 1 less than or equal to T.
The method according to claim 1, wherein the first network device sends the configuration information of the reference signal resource to the second network device, including:

The first network device sends configuration information of the reference signal resource to the second network device by using at least one of higher layer signaling and physical layer signaling.
A method for transmitting a reference signal, characterized in that the method comprises:

The second network device receives configuration information of the reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

The second network device receives the reference signal sent by the first network device according to the reference signal resource.
The method according to claim 9, wherein if the reference signal resource comprises a time domain resource, the time domain resource comprises at least one of a time unit number and a time unit location information for transmitting the reference signal.
The method according to claim 10, wherein if the reference signal resource comprises a time domain resource and a frequency domain resource, when the number of time units of the reference signal configured is greater than or equal to 2, at least one P exists. a first reference signal resource of the port and a second reference signal resource of the P port, where the first reference signal resource and the second reference signal resource have at least one same time-frequency resource unit; wherein, P is greater than or equal to A positive integer of 2.
The method according to claim 11, wherein the first reference signal resource and the second reference signal resource have the same orthogonal spreading code mapping on the at least one same time-frequency resource unit. .
The method according to claim 9, wherein if the reference signal resource comprises a code domain resource, the code domain resource comprises at least one of a length of a orthogonal spreading code corresponding to the reference signal and a mapping pattern. .
The method according to claim 13, wherein the code domain resource further comprises: a code domain resource of the reference signal on each S time unit of the T time units; wherein S is greater than or equal to 1 A positive integer less than or equal to T.
The method according to claim 9, wherein if the reference signal resource comprises the port information, the port information is port information of the reference signal on T time units, and the port information comprises At least one of a number of ports of the reference signal on the T time units, a port density of the reference signal on each of the S time units, a port mapping, and a port interval; wherein S is greater than A positive integer equal to 1 less than or equal to T.
A transmission device for a reference signal, characterized in that the device is a first network device, and the device comprises:

a configuration module, configured to configure, by the second network device, a reference signal resource, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal;

a first sending module, configured to send configuration information of the reference signal resource to the second network device;

And a second sending module, configured to send the reference signal to the second network device by using the reference signal resource.
The apparatus according to claim 16, wherein if the reference signal resource comprises a time domain resource, the time domain resource comprises at least one of a time unit number and a time unit location information for transmitting the reference signal.
The apparatus according to claim 17, wherein if the reference signal resource comprises a time domain resource and a frequency domain resource, when the number of time units of the reference signal configured is greater than or equal to 2, at least one P exists. a first reference signal resource of the port and a second reference signal resource of the P port, where the first reference signal resource and the second reference signal resource have at least one same time-frequency resource unit; wherein, P is greater than or equal to A positive integer of 2.
The apparatus according to claim 18, wherein the orthogonal reference code mapping of the first reference signal resource and the second reference signal resource on the at least one same time-frequency resource unit is the same .
The apparatus according to claim 16, wherein if the reference signal resource comprises a code domain resource, the code domain resource comprises at least one of a length of a orthogonal spreading code corresponding to the reference signal and a mapping pattern. .
The apparatus according to claim 20, wherein the code domain resource further comprises: a code domain resource of the reference signal on each S time unit of T time units; wherein S is greater than or equal to 1 A positive integer less than or equal to T.
The device according to claim 16, wherein if the reference signal resource comprises the port information, the port information is port information of the reference signal on T time units, and the port information comprises At least one of a number of ports of the reference signal on the T time units, a port density of the reference signal on each of the S time units, a port mapping, and a port interval; wherein S is greater than A positive integer equal to 1 less than or equal to T.
The apparatus according to claim 16, wherein the first sending module is specifically configured to send, by using at least one of higher layer signaling and physical layer signaling, configuration information of the reference signal resource to the second Internet equipment.
A transmission device for a reference signal, wherein the device is a second network device, and the device includes:

a first receiving module, configured to receive configuration information of a reference signal resource sent by the first network device, where the reference signal resource includes at least one of a time domain resource, a frequency domain resource, a code domain resource, and port information of the reference signal ;

And a second receiving module, configured to receive, according to the reference signal resource, the reference signal sent by the first network device.
The apparatus according to claim 24, wherein if the reference signal resource comprises a time domain resource, the time domain resource comprises at least one of a time unit number and a time unit location information for transmitting the reference signal.
The apparatus according to claim 25, wherein if the reference signal resource comprises a time domain resource and a frequency domain resource, when there is a configured time unit of the reference signal greater than or equal to 2, at least one P exists. a first reference signal resource of the port and a second reference signal resource of the P port, where the first reference signal resource and the second reference signal resource have at least one same time-frequency resource unit; wherein, P is greater than or equal to A positive integer of 2.
The apparatus according to claim 26, wherein the orthogonal reference code mapping of the first reference signal resource and the second reference signal resource on the at least one same time-frequency resource unit is the same .
The apparatus according to claim 24, wherein if the reference signal resource comprises a code domain resource, the code domain resource comprises at least one of a length of a orthogonal spreading code corresponding to the reference signal and a mapping pattern. .
The apparatus according to claim 28, wherein said code domain resource further comprises: a code domain resource of said reference signal on each S time unit of T time units; wherein S is greater than or equal to 1 A positive integer less than or equal to T.
The device according to claim 24, wherein if the reference signal resource comprises the port information, the port information is port information of the reference signal on T time units, and the port information comprises At least one of a number of ports of the reference signal on the T time units, a port density of the reference signal on each of the S time units, a port mapping, and a port interval; wherein S is greater than A positive integer equal to 1 less than or equal to T.