CN111698075A

CN111698075A - Reference signal transmitting and receiving method and device, storage medium, base station and terminal

Info

Publication number: CN111698075A
Application number: CN202010577910.1A
Authority: CN
Inventors: 王钰华; 王化磊
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-09-22
Anticipated expiration: 2040-06-22
Also published as: CN111698075B

Abstract

A reference signal sending and receiving method and device, a storage medium, a base station and a terminal are provided, the method comprises the following steps: determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, and the L target DMRS ports belong to the same DMRS CDM group, wherein the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2; determining a reference resource element value of the PT-RS port according to the target DMRS port; and sending the reference signal according to the reference resource element value of the PT-RS port. The scheme of the invention can effectively determine the reference resource element value, thereby being capable of further adopting the reference resource element value to send the PT-RS.

Description

Reference signal transmitting and receiving method and device, storage medium, base station and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting and receiving a reference signal, a storage medium, a base station, and a terminal.

Background

In the 5G New Radio (NR) technology, in a scenario deployed based on a High speed transmission Single Frequency Network (HST-SFN), when a downlink Phase-Tracking Reference Signal (PT-RS) is mapped, a PT-RS Reference Signal sent by each access point (TRP) is always associated with a DMRS port with a minimum index among Demodulation Reference Signal (DMRS) ports sent by corresponding respective TRPs.

Referring to fig. 1, fig. 1 is a schematic diagram of an operating scenario of an HST-SFN deployment in the prior art.

A terminal can transmit a plurality of TRPs simultaneously, SFN-based transmission, that is, two TRPs transmit the same content, and if one DMRS port is used, that is, transmission similar to Ultra Reliable Low Latency Communications (URLLC) service scheme1c in a multi-access point (multi-TRP) scenario, this transmission scheme is implemented by configuring a plurality of TCI states (TCI states) to one DMRS port, and different TCI states (TCI states) correspond to different TRPs, respectively. SFN based transmission, i.e. two TRP transmissions are the same content, each TRP may use a respective demodulation reference signal DMRS port, i.e. similar to the transmission of URLLC combination (scheme)1b in a multi-TRP scenario.

It can be understood that if the scenario is based on multi-TRP scheme1c, i.e. different TRPs use the same DMRS port, this DMRS port corresponds to multiple TCI states at this time. It should be noted that, in the prior art scheme, for downlink transmission, the network only configures one PT-RS port, which is associated with the DMRS port with the smallest index among the DMRS ports.

However, in the prior art, there are cases where the number of PT-RS ports is greater than the number of DMRS port ports, for example, when the transmission scheme of the HST-SFN deployment scenario is based on multi-TRP URLLC scheme1c, there is no corresponding solution at present.

There is a need for a reference signal transmission method to effectively determine the mapping positions of all PT-RS ports.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a reference signal sending and receiving method and device, a storage medium, a base station and a terminal, which can effectively determine the value of a reference resource element, thereby being capable of further adopting the value of the reference resource element to send a PT-RS.

In order to solve the above technical problem, an embodiment of the present invention provides a method for sending a reference signal, including the following steps: determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2; determining a reference resource element value of the PT-RS port according to the target DMRS port; and sending the reference signal according to the reference resource element value of the PT-RS port.

Optionally, the M PT-RS ports include a first PT-RS port and a second PT-RS port; wherein the first PT-RS port is associated with a first TCI state of the K TCI states, the second PT-RS port is associated with a second TCI state of the K TCI states, and the first PT-RS port is associated with at least a least indexed DMRS port of the target DMRS ports.

Optionally, the first TCI state is different from the second TCI state.

Optionally, determining, according to the target DMRS port, a reference resource element value of the PT-RS port includes: acquiring a reference resource element value of a first PT-RS port according to the resource element offset of the first PT-RS port in the network high-level configuration information; and acquiring the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: and adding a preset offset to the reference resource element value of the first PT-RS port to obtain the reference resource element value of the second PT-RS port.

Optionally, the preset offset is predefined by a protocol; or the preset offset is preset by a protocol; or, the preset offset is configured by adopting RRC; or, the preset offset is configured through the MAC; or, the preset offset is indicated by DCI.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a resource element offset for the first PT-RS port; adding a preset deviation value to the resource element offset of the first PT-RS port to obtain the resource element offset of the second PT-RS port; and determining a reference resource element value of the second PT-RS port according to the resource element offset of the second PT-RS port.

Optionally, the preset deviation value is predefined by a protocol; or, the preset deviation value is preset by a protocol; or, the preset deviation value is configured by adopting RRC; or, the preset deviation value is configured through the MAC; or the preset deviation value is indicated by DCI.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: and acquiring a reference resource element value of a second PT-RS port according to the resource element offset of the second PT-RS port in the network high-level configuration information.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining DMRS ports of other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located; selecting a virtual DMRS port from the DMRS ports of the other DMRS CDM groups; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Optionally, selecting a virtual DMRS port among the DMRS ports of the other DMRS CDM groups includes: and selecting the DMRS port with the smallest index from the DMRS ports of the other DMRS CDM groups as the virtual DMRS port.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a DMRSCDM group where the target DMRS port is located; determining DMRS ports within the DMRS CDM group other than the target DMRS port; selecting a virtual DMRS port from the DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Optionally, selecting a virtual DMRS port among the DMRS ports includes: selecting a DMRS port with a smallest index as the virtual DMRS port from the DMRS ports.

Optionally, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a DMRSCDM group where the target DMRS port is located; determining other DMRS ports within the DMRS CDM group except for a least indexed DMRS port of the target DMRS ports; selecting a virtual DMRS port among the other DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Optionally, selecting a virtual DMRS port among the other DMRS ports includes: selecting, among the other DMRS ports, a least indexed DMRS port as the virtual DMRS port.

To solve the above technical problem, an embodiment of the present invention provides a method for receiving a reference signal, including the following steps: determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2; determining a reference resource element value of the PT-RS port according to the target DMRS port; and receiving the reference signal according to the reference resource element value of the PT-RS port.

Optionally, the first TCI state is different from the second TCI state.

Optionally, the preset deviation value is predefined by a protocol; or, the preset deviation value is preset by a protocol; or, the preset deviation value is configured by adopting RRC; or, the preset deviation value is configured by adopting RRC signaling; or, the preset deviation value is configured through the MAC; or the preset deviation value is indicated by DCI.

To solve the above technical problem, an embodiment of the present invention provides an apparatus for sending a reference signal, including: the first port determining module is used for determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2; a first reference resource element value determination module, configured to determine a reference resource element value of the PT-RS port according to the target DMRS port; and the sending module is used for sending the reference signal according to the reference resource element value of the PT-RS port.

To solve the above technical problem, an embodiment of the present invention provides a reference signal receiving apparatus, including: the second port determining module is used for determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2; a second reference resource element value determination module, configured to determine a reference resource element value of the PT-RS port according to the target DMRS port; and the receiving module is used for receiving the reference signal according to the reference resource element value of the PT-RS port.

In order to solve the above technical problem, an embodiment of the present invention provides a storage medium having stored thereon computer instructions, which when executed perform the steps of the method for transmitting a reference signal or the steps of the method for receiving a reference signal.

In order to solve the above technical problem, an embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the reference signal transmission method when executing the computer instructions.

In order to solve the above technical problem, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the above reference signal receiving method when executing the computer instructions.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, the reference resource element value of the PT-RS port is determined according to the target DMRS port, so that the reference signal can be sent.

Furthermore, by determining the resource elements of the first PT-RS port and further adding a preset offset to the resource elements of the first PT-RS port, the reference resource element value of the second PT-RS port can be effectively determined.

And further, determining the resource element offset of the first PT-RS port, and further adding a preset offset value to the resource element offset to obtain the resource element offset of the second PT-RS port, thereby effectively determining the reference resource element value of the second PT-RS port.

Further, by setting the resource element offset of the second PT-RS port included in the network high-level configuration information, the resource element offset of the second PT-RS port can be determined without depending on the reference resource element value of the first PT-RS port, and the reference resource element value of the second PT-RS port can be obtained.

Further, a virtual DMRS port is selected from the determined available DMRS ports in other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located, so that the virtual DMRS port can be selected in different DMRS CDM groups, and the reference resource element value of the second PT-RS port can be effectively determined.

Further, by determining available DMRS ports except the target DMRS port in the DMRS CDM group, virtual DMRS ports can be selected in the same DMRS CDM group, so that the reference resource element value of the second PT-RS port can be effectively determined.

Drawings

Fig. 1 is a schematic diagram of an operating scenario of an HST-SFN deployment in the prior art;

fig. 2 is a flowchart of a method for transmitting a reference signal according to an embodiment of the present invention;

FIG. 3 is a flowchart of a first embodiment of step S22 of FIG. 2;

fig. 4 is a schematic diagram of a reference resource element value of a first PT-RS port according to an embodiment of the present invention;

FIG. 5 is a flowchart of a second embodiment of step S22 of FIG. 2;

fig. 6 is a schematic diagram illustrating a reference resource element value of a second PT-RS port according to an embodiment of the present invention;

FIG. 7 is a flowchart of a third embodiment of step S22 of FIG. 2;

FIG. 8 is a flowchart of a fourth embodiment of step S22 of FIG. 2;

fig. 9 is a schematic diagram illustrating reference resource element values of a fourth PT-RS port according to an embodiment of the present invention;

FIG. 10 is a flow chart of a fifth embodiment of step S22 of FIG. 2;

fig. 11 is a schematic diagram illustrating a reference resource element value of a fifth PT-RS port according to an embodiment of the present invention;

fig. 12 is a flowchart of a reference signal receiving method according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of an apparatus for transmitting a reference signal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a reference signal receiving apparatus according to an embodiment of the present invention.

Detailed Description

The inventor of the present invention finds, through research, that in the prior art, there is a case where the number of PT-RS ports is greater than 1, for example, when a transmission scheme of an HST-SFN deployment scenario is based on multi-TRP URLLC scheme1c, only one DMRS port is used as a target port, and at this time, M PT-RS ports associated with the DMRS port have the same reference resource element value if the transmission scheme is based on an existing protocol, so that the M PT-RS ports cannot be distinguished, and system performance is affected.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 2, fig. 2 is a flowchart of a method for sending a reference signal in an embodiment of the present invention. The method for transmitting the reference signal may be used on the base station side, and may further include steps S21 to S23:

step S21: determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

step S22: determining a reference resource element value of the PT-RS port according to the target DMRS port;

step S23: and sending the reference signal according to the reference resource element value of the PT-RS port.

In a specific implementation of step S21, 2 PT-RS ports are each associated with the 1 target DMRS port.

Wherein the L target DMRS ports belong to a same DMRS Code Division Multiplexing (CDM) group.

Wherein the L target DMRS ports are associated with K Transport Configuration Indication (TCI) states (states). The K TCI states may include a first TCI state and a second TCI state.

Further, the M PT-RS ports may include a first PT-RS port and a second PT-RS port; wherein the first PT-RS port is associated with a first TCI state of the K TCI states, the second PT-RS port is associated with a second TCI state of the K TCI states, and the first PT-RS port is associated with at least a least indexed DMRS port of the target DMRS ports.

Further, the first TCI state is different from the second TCI state.

In the embodiment of the present invention, by setting the TCI state associated with the first PT-RS port to be different from the TCI state associated with the second PT-RS port, it is possible to further specify the PT-RS port on which the reference resource element value needs to be determined.

In the specific implementation of step S22, a reference resource element value of the PT-RS port is determined according to the target DMRS port.

Further, according to the target DMRS port, the step of determining a reference resource element value of the PT-RS port may include: acquiring a reference resource element value of a first PT-RS port according to the resource element offset of the first PT-RS port in the network high-level configuration information; and acquiring the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port.

The network high-level configuration information may be configured through Radio Resource Control (RRC).

In the embodiment of the invention, the reference resource element value of the PT-RS port is determined in various modes.

In a first specific implementation manner of the embodiment of the present invention, the step of obtaining a reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: and adding a preset offset to the reference resource element value of the first PT-RS port to obtain the reference resource element value of the second PT-RS port.

Referring to fig. 3, fig. 3 is a flowchart of a first specific implementation of step S22 in fig. 2. The step of determining the reference resource element value of the PT-RS port according to the target DMRS port may include steps S31 to S32, and the steps are described below.

In step S31, a reference resource element value of the first PT-RS port is obtained according to the resource element offset of the first PT-RS port in the network high-level configuration information.

In step S32, a preset offset is added to the reference resource element value of the first PT-RS port to obtain the reference resource element value of the second PT-RS port.

In a specific embodiment, assuming that two TRPs are associated, assuming that a configured DMRS Port is Port1000, assuming that two TCI states are shared, a PT-RS sent by a TRP corresponding to a first TCI state may determine a value of a PT-RS reference resource element sent by the first TRP according to a value of a network higher layer configuration information resource element offset (e.g., parameter resource element offset) according to a principle of Rel-15. It should be noted that, if the resource element offset (resource element offset) is not configured at the higher layer of the network, the resource element offset may be set to be 'offset00' by default. Alternatively, if the network higher layer does not configure the resource element offset (resource element offset), the resource element offset value may be determined according to the resource element offset of the first PT-RS port in the network higher layer configuration information, that is, the resource element offset of the first PT-RS port at this time, for example, the resource element offset value is considered to be 'offset 00'. Referring to table 1, table 1 is for indicating values of reference resource elements, i.e., parameters, of PT-RS

Wherein Table 1 is derived from the literature [3GPP TS 38.211: "NR; physicalchannels and modulation "]。

TABLE 1

As can be seen from table 1, in the case of determining a DMRS port, a value of a reference resource element of the PT-RS port may be determined according to a resource element offset of the first PT-RS port. For example, given that the DMRS Port is Port1000, the reference resource element value of the PT-RS Port may be determined to be 0 according to the resource element offset of the first PT-RS Port being 00; according to the resource element offset of the first PT-RS port being 01, it can be determined that the reference resource element value of the PT-RS port is 2.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a reference resource element value of a first PT-RS port according to an embodiment of the present invention.

As shown in fig. 4, a preset offset is set to 1, and a reference resource element value of the second PT-RS port is obtained according to the resource element offset of the first PT-RS port.

Further, the preset offset may be protocol predefined; alternatively, the preset offset may be preset by a protocol; or, the preset offset is configured by adopting RRC; or, the preset offset may be configured through a Medium Access Control (MAC) layer of a sending end; alternatively, the preset offset may be indicated by Downlink Control Information (DCI).

In the embodiment of the invention, the reference resource element value of the second PT-RS port can be effectively determined by determining the resource element offset of the first PT-RS port and further adding the preset offset to the reference resource element value of the first PT-RS port.

In a second specific implementation manner of the embodiment of the present invention, the step of obtaining a reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: determining a resource element offset for the first PT-RS port; adding a preset deviation value to the resource element offset of the first PT-RS port to obtain the resource element offset of the second PT-RS port; and determining a reference resource element value of the second PT-RS port according to the resource element offset of the second PT-RS port.

Referring to fig. 5, fig. 5 is a flowchart of a second specific implementation of step S22 in fig. 2. The step of determining the reference resource element value of the PT-RS port according to the target DMRS port may include steps S51 to S54, and the steps are described below.

In step S51, a reference resource element value of the first PT-RS port is obtained according to the resource element offset of the first PT-RS port in the network high-level configuration information.

Specifically, if the DMRS port associated with the first PT-RS is 1000, the resource element offset of the first PT-RS port may be determined according to the network configuration information according to table 1, and the value of the reference resource element of the first PT-RS port is determined in a table lookup manner, for example, the resource element offset of the first PT-RS port may be 00, 01, 10, or 11, and the value of the reference resource element of the first PT-RS port may be 0, 2, 6, or 8.

In step S52, a preset offset value is added to the resource element offset of the first PT-RS port to obtain the resource element offset of the second PT-RS port.

Further, the preset deviation value may be protocol predefined; alternatively, the preset deviation value may be preset by a protocol; or, the preset deviation value is configured by adopting RRC; or, the preset deviation value is configured through the MAC; or the preset deviation value is indicated by DCI.

In the implementation of the invention, the preset deviation value is determined by setting various modes, which can be selected according to specific conditions, thereby improving the convenience of users.

In step S53, a value of a reference resource element of the second PT-RS port is determined according to the resource element offset of the second PT-RS port.

Specifically, the value of the reference resource element of the second PT-RS port may be determined by using a table lookup manner according to table 1.

Wherein different second PT-RS ports adopt different preset deviation values.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a reference resource element value of a second PT-RS port according to an embodiment of the present invention.

As shown in fig. 6, a preset offset value is set to 1, and the resource element offset of the second PT-RS port is obtained according to the resource element offset of the first PT-RS port.

In a second specific implementation manner of the embodiment of the present invention, the resource element offset of the first PT-RS port is determined, and then a preset offset value is added to the resource element offset to obtain the resource element offset of the second PT-RS port, so as to effectively determine the reference resource element value of the second PT-RS port.

In the embodiment of the invention, the resource element offset of the first PT-RS port is determined, and then the resource element offset of the second PT-RS port is obtained by adding the preset offset value to the resource element offset, so that the reference resource element value of the second PT-RS port is effectively determined.

In a third specific implementation manner of the embodiment of the present invention, the step of obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: and acquiring a reference resource element value of a second PT-RS port according to the resource element offset of the second PT-RS port in the network high-level configuration information.

Referring to fig. 7, fig. 7 is a flowchart of a third embodiment of step S22 in fig. 2. The step of determining the reference resource element value of the PT-RS port according to the target DMRS port may include steps S71 to S72, and the steps are described below.

In step S71, a reference resource element value of the first PT-RS port is obtained according to the resource element offset of the first PT-RS port in the network high-level configuration information.

In step S72, a reference resource element value of the second PT-RS port is obtained according to the resource element offset of the second PT-RS port in the network high-level configuration information.

Specifically, the resource element offset of the second PT-RS port may be configured in the network high-level configuration information, and by receiving the network high-level configuration information, the resource element offset of the first PT-RS port and the resource element offset of the second PT-RS port may be obtained, so as to obtain a reference resource element value of the first PT-RS port and a reference resource element value of the second PT-RS port.

In the embodiment of the invention, by setting the resource element offset of the second PT-RS port contained in the network high-level configuration information, the resource element offset of the second PT-RS port can be determined without depending on the reference resource element value of the first PT-RS port, and the reference resource element value of the second PT-RS port can be further obtained.

In a fourth specific implementation manner of the embodiment of the present invention, the step of obtaining a reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: determining DMRS ports of other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located; selecting a virtual DMRS port from the DMRS ports of the other DMRS CDM groups; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information. And the virtual DMRS port is used for obtaining the reference resource element value of the second PT-RS port according to the first table, namely the virtual DMRS port is the DMRS port in the first table.

Referring to fig. 8, fig. 8 is a flowchart of a fourth embodiment of step S22 in fig. 2. The step of determining the reference resource element value of the PT-RS port according to the target DMRS port may include steps S81 to S84, and the steps are described below.

In step S81, a reference resource element value of the first PT-RS port is obtained according to the resource element offset of the first PT-RS port in the network high-level configuration information.

In step S82, DMRS ports of other DMRS CDM groups than the DMRS CDM group in which the target DMRS port is located are determined.

In step S83, a virtual DMRS port is selected among the DMRS ports of the other DMRS CDM groups.

In step S84, a reference resource element value of the second PT-RS port is determined according to the virtual DMRS port and the resource element offset of the first PT-RS port, or a reference resource element value of the second PT-RS port is determined according to the virtual DMRS port and the resource element offset of the second PT-RS port, where the resource element offset of the second PT-RS port is configured in the network higher layer configuration information.

Referring to fig. 9, fig. 9 is a schematic diagram illustrating reference resource element values of a fourth PT-RS port according to an embodiment of the present invention.

As shown in fig. 9, each Port1002/1003 belongs to the same CDM group, and each Port1000/1001 belongs to another CDM group other than the DMRS CDM group in which the target DMRS Port is located.

Further, among the DMRS ports of the other DMRS CDM groups, the step of selecting a virtual DMRS port may include: and selecting the DMRS port with the smallest index from the DMRS ports of the other DMRS CDM groups as the virtual DMRS port.

In a specific implementation, for the DMRS configuration type1 configuration, and the number of the preceding DMRS symbols is 1, assuming that the number of the target DMRS ports is 1, if it is determined that the associated target DMRS Port number is 1000, the available virtual DMRS Port is Port1002, if it is determined that the associated target DMRS Port number is 1002, the available virtual DMRS Port is Port1000, if it is determined that the associated target DMRS Port number is 1001, the available virtual DMRS Port is Port1002, and if it is determined that the associated target DMRS Port number is 1003, the available virtual DMRS Port is Port 1000.

Wherein the resource element offset of the second PT-RS port can be configured by a higher layer, for example, by RRC.

It should be noted that, in an embodiment, the contents of the resource element offset of the second PT-RS port and the resource element offset of the first PT-RS port may be the same, so that the configuration may be performed only once, and the signaling overhead may be reduced.

Specifically, the reference resource element value of the second PT-RS may be determined according to the resource element offset of the second PT-RS port by using table 1.

It should be noted that, as shown in fig. 9, the reference resource element value of the first PT-RS port and the reference resource element value information of the second PT-RS port are obtained as a result of a specific implementation, in order to select a DMRS port with a smallest index as the virtual DMRS port from the available DMRS ports in the other DMRS CDM groups. Other suitable second PT-RS ports may also be employed in embodiments of the present invention.

In the embodiment of the invention, the virtual DMRS ports are selected from the determined available DMRS ports through other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located, so that the virtual DMRS ports can be selected in different DMRS CDM groups, and the reference resource element value of the second PT-RS port can be effectively determined.

In a fifth specific implementation manner of the embodiment of the present invention, the step of obtaining a reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: determining a DMRS CDM group where the target DMRS port is located; determining DMRS ports within the DMRS CDM group other than the target DMRS port; selecting a virtual DMRS port from the DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Referring to fig. 10, fig. 10 is a flowchart of a fifth specific embodiment of step S22 in fig. 2. The step of determining the reference resource element value of the PT-RS port according to the target DMRS port may include steps S101 to S105, and the following description describes each step.

In step S101, a reference resource element value of the first PT-RS port is obtained according to the resource element offset of the first PT-RS port in the network high-level configuration information.

In step S102, a DMRS CDM group in which the target DMRS port is located is determined.

In step S103, DMRS ports within the DMRS CDM group other than the target DMRS port are determined.

In step S104, among the DMRS ports, a virtual DMRS port is selected.

In step S105, determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Referring to fig. 11, fig. 11 is a schematic diagram of a reference resource element value of a fifth PT-RS port according to an embodiment of the present invention.

As shown in fig. 11, each Port1002/1003 belongs to the same DMRS CDM group, and each Port1000/1001 belongs to another DMRS CDM group.

Further, among the DMRS ports, the step of selecting a virtual DMRS port may include: selecting a DMRS port with a smallest index as the virtual DMRS port from the DMRS ports.

In a specific implementation, for the DMRS configuration type1 configuration, and the number of the preceding DMRS symbols is 1, assuming that the number of the target DMRS ports is 1, if it is determined that the associated target DMRS port number is 1000, the available virtual DMRS port is port 1001, if it is determined that the associated target DMRS port number is 1001, the available virtual DMRS port is port1000, if it is determined that the associated target DMRS port number is 1002, the available virtual DMRS port is port 1003, and if it is determined that the associated target DMRS port number is 1003, the available virtual DMRS port is port 1002.

It should be noted that, as shown in fig. 11, the reference resource element value of the first PT-RS port and the reference resource element value information of the second PT-RS port are obtained as a result of a specific implementation, where a DMRS port with a smallest index among DMRS ports is selected as the virtual DMRS port from DMRS ports in the DMRS CDM group except for the target DMRS port. Other suitable second PT-RS ports may also be employed in embodiments of the present invention.

In the embodiment of the invention, the available DMRS ports except the target DMRS port are determined in the DMRS CDM group, so that the virtual DMRS ports can be selected in the same DMRS CDM group, and the reference resource element value of the second PT-RS port can be effectively determined.

In a sixth specific implementation manner of the embodiment of the present invention, the step of obtaining a reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port may include: determining a DMRS CDM group where the target DMRS port is located; determining other DMRS ports within the DMRS CDM group except for a least indexed DMRS port of the target DMRS ports; selecting a virtual DMRS port among the other DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Compared with the fifth embodiment shown in fig. 10 and 11, the sixth embodiment has a larger selection space for changing the selection range of the virtual DMRS ports in the DMRS CDM group from "outside the target DMRS ports" to "outside the DMRS ports with the smallest index in the target DMRS ports".

Further, among the other DMRS ports, the step of selecting a virtual DMRS port may include: selecting, among the other DMRS ports, a least indexed DMRS port as the virtual DMRS port.

In the embodiment of the invention, the available DMRS ports except the DMRS port with the minimum index in the target DMRS ports are determined in the DMRS CDM group, so that the virtual DMRS ports can be selected in the same DMRS CDM group, and the reference resource element value of the second PT-RS port can be effectively determined.

With continued reference to fig. 2, in a specific implementation of step S23, the reference signal may be sent according to a reference resource element value of the PT-RS port.

Referring to fig. 12, fig. 12 is a flowchart of a reference signal receiving method according to an embodiment of the present invention; . The reference signal receiving method may be used in a terminal side, and may further include steps S121 to S123:

step S121: determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

step S122: determining a reference resource element value of the PT-RS port according to the target DMRS port;

step S123: and receiving the reference signal according to the reference resource element value of the PT-RS port.

Further, the M PT-RS ports include a first PT-RS port and a second PT-RS port; wherein the first PT-RS port is associated with a first TCI state of the K TCI states, the second PT-RS port is associated with a second TCI state of the K TCI states, and the first PT-RS port is associated with at least a least indexed DMRS port of the target DMRS ports.

Further, the first TCI state is different from the second TCI state.

Further, according to the target DMRS port, determining a reference resource element value of the PT-RS port includes: acquiring a reference resource element value of a first PT-RS port according to the resource element offset of the first PT-RS port in the network high-level configuration information; and acquiring the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: and adding a preset offset to the reference resource element value of the first PT-RS port to obtain the reference resource element value of the second PT-RS port.

Further, the preset offset is protocol predefined; or the preset offset is preset by a protocol; or, the preset offset is configured by adopting RRC; or, the preset offset is configured through the MAC; or, the preset offset is indicated by DCI.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a resource element offset for the first PT-RS port; adding a preset deviation value to the resource element offset of the first PT-RS port to obtain the resource element offset of the second PT-RS port; and determining a reference resource element value of the second PT-RS port according to the resource element offset of the second PT-RS port.

Further, the preset deviation value is protocol predefined; alternatively, the preset deviation value may be preset by a protocol; or, the preset deviation value is configured by adopting RRC; or, the preset deviation value is preset by a protocol; or, the preset deviation value is configured by adopting RRC signaling; or, the preset deviation value is configured through the MAC; or the preset deviation value is indicated by DCI.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: and acquiring a reference resource element value of a second PT-RS port according to the resource element offset of the second PT-RS port in the network high-level configuration information.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining DMRS ports of other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located; selecting a virtual DMRS port from the DMRS ports of the other DMRS CDM groups; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Further, selecting a virtual DMRS port among the DMRS ports of the other DMRS CDM groups includes: and selecting the DMRS port with the smallest index from the DMRS ports of the other DMRS CDM groups as the virtual DMRS port.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a DMRSCDM group where the target DMRS port is located; determining DMRS ports within the DMRS CDM group other than the target DMRS port; selecting a virtual DMRS port from the DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Further, among the DMRS ports, selecting a virtual DMRS port includes: selecting a DMRS port with a smallest index as the virtual DMRS port from the DMRS ports.

Further, obtaining the reference resource element value of the second PT-RS port according to network high-level configuration information and/or the reference resource element value of the first PT-RS port includes: determining a DMRS CDM group in which the target DMRS port is located; determining other DMRS ports within the DMRS CDM group except for a least indexed DMRS port of the target DMRS ports; selecting a virtual DMRS port among the other DMRS ports; determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port; or determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

Further, among the other DMRS ports, selecting a virtual DMRS port includes: selecting, among the other DMRS ports, a least indexed DMRS port as the virtual DMRS port.

In the specific implementation, more details about steps S121 to S123 are described with reference to steps S21 to S23 in fig. 2, and are not described herein again.

Referring to fig. 13, fig. 13 is a schematic structural diagram of an apparatus for sending a reference signal according to an embodiment of the present invention. The reference signal transmitting apparatus may be used in a base station, and may include:

a first port determining module 131, configured to determine M PT-RS ports and L target DMRS ports, where the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, and the L target DMRS ports are associated with K TCI states, where M is greater than or equal to 2, L is greater than or equal to 1, and K is greater than or equal to 2;

a first reference resource element value determining module 132, configured to determine a reference resource element value of the PT-RS port according to the target DMRS port;

a sending module 133, configured to send the reference signal according to a reference resource element value of the PT-RS port.

For the principle, specific implementation and beneficial effects of the apparatus for sending the reference signal, please refer to the foregoing and the related descriptions about the sending method of the reference signal shown in fig. 2 to fig. 11, which are not described herein again.

Referring to fig. 14, fig. 14 is a schematic structural diagram of a reference signal receiving apparatus according to an embodiment of the present invention. The receiving apparatus of the reference signal may be used at a terminal side, and may further include:

a second port determining module 141, configured to determine M PT-RS ports and L target DMRS ports, where the M PT-RS ports are all associated with the L target DMRS ports, where the L target DMRS ports belong to the same DMRS CDM group, where the L target DMRS ports are associated with K TCI states, M is greater than or equal to 2, L is greater than or equal to 1, and K is greater than or equal to 2;

a second reference resource element value determining module 142, configured to determine, according to the target DMRS port, a reference resource element value of the PT-RS port;

a receiving module 143, configured to receive the reference signal according to a reference resource element value of the PT-RS port.

For the principle, specific implementation and beneficial effects of the reference signal receiving apparatus, please refer to the foregoing and the related description of the reference signal receiving method shown in fig. 12, which will not be described herein again.

The embodiment of the present invention further provides a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the method for transmitting the reference signal are executed, and the steps of the method for receiving the reference signal are also executed. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.

The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the step of sending the reference signal when running the computer instruction.

The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes the steps of the reference signal receiving method when running the computer instruction. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for transmitting a reference signal, comprising:

determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, and the L target DMRS ports belong to the same DMRS CDM group, wherein the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

determining a reference resource element value of the PT-RS port according to the target DMRS port;

and sending the reference signal according to the reference resource element value of the PT-RS port.

2. The method according to claim 1, wherein the reference signal is transmitted from the base station,

the M PT-RS ports comprise a first PT-RS port and a second PT-RS port;

wherein the first PT-RS port is associated with a first TCI state of the K TCI states, the second PT-RS port is associated with a second TCI state of the K TCI states, and the first PT-RS port is associated with at least a least indexed DMRS port of the target DMRS ports.

3. The method according to claim 2, wherein the first TCI state is different from the second TCI state.

4. The method for sending the reference signal according to claim 2, wherein determining the reference resource element value of the PT-RS port according to the target DMRS port comprises:

acquiring a reference resource element value of the first PT-RS port according to the resource element offset of the first PT-RS port in the network high-level configuration information;

and acquiring the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port.

5. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

and adding a preset offset to the reference resource element value of the first PT-RS port to obtain the reference resource element value of the second PT-RS port.

6. The method according to claim 5, wherein the reference signal is transmitted from the base station,

the preset offset is predefined by a protocol;

or the preset offset is preset by a protocol;

or, the preset offset is configured by adopting RRC;

or, the preset offset is configured through the MAC;

or, the preset offset is indicated by DCI.

7. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a resource element offset for the first PT-RS port;

adding a preset deviation value to the resource element offset of the first PT-RS port to obtain the resource element offset of the second PT-RS port;

and determining a reference resource element value of the second PT-RS port according to the resource element offset of the second PT-RS port.

8. The method according to claim 7, wherein the reference signal is transmitted from the base station,

the preset deviation value is predefined by a protocol;

or, the preset deviation value is preset by a protocol;

or, the preset deviation value is configured by adopting RRC;

or, the preset deviation value is configured through the MAC;

or the preset deviation value is indicated by DCI.

9. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

and acquiring a reference resource element value of the second PT-RS port according to the resource element offset of the second PT-RS port in the network high-level configuration information.

10. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining DMRS ports of other DMRS CDM groups except the DMRS CDM group where the target DMRS port is located;

selecting a virtual DMRS port from the DMRS ports of the other DMRS CDM groups;

determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the first PT-RS port;

or,

and determining a reference resource element value of the second PT-RS port according to the virtual DMRS port and the resource element offset of the second PT-RS port, wherein the resource element offset of the second PT-RS port is configured in the network high-level configuration information.

11. The method of transmitting the reference signal according to claim 10, wherein selecting the virtual DMRS port among the DMRS ports of the other DMRS CDM groups comprises:

and selecting the DMRS port with the smallest index from the DMRS ports of the other DMRS CDM groups as the virtual DMRS port.

12. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a DMRS CDM group where the target DMRS port is located;

determining DMRS ports within the DMRS CDM group other than the target DMRS port;

selecting a virtual DMRS port from the DMRS ports;

or,

13. The method for transmitting reference signals according to claim 12, wherein selecting a virtual DMRS port among the DMRS ports comprises:

selecting a DMRS port with a smallest index as the virtual DMRS port from the DMRS ports.

14. The method according to claim 4, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a DMRS CDM group where the target DMRS port is located;

determining other DMRS ports within the DMRS CDM group except for a least indexed DMRS port of the target DMRS ports;

selecting a virtual DMRS port among the other DMRS ports;

or,

15. The method of transmitting a reference signal according to claim 14, wherein selecting a virtual DMRS port among the other DMRS ports comprises:

selecting, among the other DMRS ports, a least indexed DMRS port as the virtual DMRS port.

16. A method for receiving a reference signal, comprising:

determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, wherein the L target DMRS ports belong to the same DMRS CDM group, and wherein the L target DMRS ports are associated with K target DMRS ports

In the TCI state, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

and receiving the reference signal according to the reference resource element value of the PT-RS port.

17. The method for receiving a reference signal according to claim 16,

the M PT-RS ports comprise a first PT-RS port and a second PT-RS port;

18. The method of receiving a reference signal according to claim 17, wherein the first TCI state is different from the second TCI state.

19. The method for receiving the reference signal according to claim 17, wherein determining the reference resource element value of the PT-RS port according to the target DMRS port comprises:

20. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

21. The method for receiving a reference signal according to claim 20,

the preset offset is predefined by a protocol;

or the preset offset is preset by a protocol;

or, the preset offset is configured by adopting RRC;

or, the preset offset is configured through the MAC;

or, the preset offset is indicated by DCI.

22. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a resource element offset for the first PT-RS port;

23. The method for receiving a reference signal according to claim 22,

the preset deviation value is predefined by a protocol;

or, the preset deviation value is preset by a protocol;

or, the preset deviation value is configured by adopting RRC;

or, the preset deviation value is configured through the MAC;

or the preset deviation value is indicated by DCI.

24. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

and acquiring a reference resource element value of a second PT-RS port according to the resource element offset of the second PT-RS port in the network high-level configuration information.

25. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

selecting a virtual DMRS port from the DMRS ports of the other DMRS CDM groups;

or,

26. The method for receiving a reference signal according to claim 25, wherein selecting a virtual DMRS port among DMRS ports of the other DMRS CDM groups comprises:

27. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a DMRS CDM group where the target DMRS port is located;

selecting a virtual DMRS port from the DMRS ports;

or,

28. The method of receiving a reference signal according to claim 27, wherein selecting a virtual DMRS port among the DMRS ports comprises:

29. The method of receiving the reference signal according to claim 19, wherein obtaining the reference resource element value of the second PT-RS port according to the network high-level configuration information and/or the reference resource element value of the first PT-RS port includes:

determining a DMRS CDM group where the target DMRS port is located;

selecting a virtual DMRS port among the other DMRS ports;

or,

30. The method of receiving a reference signal according to claim 29, wherein selecting a virtual DMRS port among the other DMRS ports comprises:

31. An apparatus for transmitting a reference signal, comprising:

the first port determining module is used for determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

a first reference resource element value determination module, configured to determine a reference resource element value of the PT-RS port according to the target DMRS port;

and the sending module is used for sending the reference signal according to the reference resource element value of the PT-RS port.

32. An apparatus for receiving a reference signal, comprising:

the second port determining module is used for determining M PT-RS ports and L target DMRS ports, wherein the M PT-RS ports are all associated with the L target DMRS ports, the L target DMRS ports belong to the same DMRS CDM group, the L target DMRS ports are associated with K TCI states, M is more than or equal to 2, L is more than or equal to 1, and K is more than or equal to 2;

a second reference resource element value determination module, configured to determine a reference resource element value of the PT-RS port according to the target DMRS port;

and the receiving module is used for receiving the reference signal according to the reference resource element value of the PT-RS port.

33. A storage medium having stored thereon computer instructions which, when executed, perform the steps of the method for transmitting a reference signal according to any one of claims 1 to 15 or the steps of the method for receiving a reference signal according to any one of claims 16 to 30.

34. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the method of reference signal transmission according to any one of claims 1 to 15.

35. A terminal comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, characterized in that said processor, when executing said computer instructions, performs the steps of the method of reception of a reference signal according to any one of claims 16 to 30.