CN110034897A

CN110034897A - A kind of reference signal transmission method and device

Info

Publication number: CN110034897A
Application number: CN201810032708.3A
Authority: CN
Inventors: 黄秋萍; 拉盖施; 高秋彬; 陈润华
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2019-07-19
Anticipated expiration: 2038-01-12
Also published as: CN110034897B

Abstract

This application discloses a kind of reference signal transmission method and devices.In the application, base station sends the triggering of the first reference signal or activation signaling to terminal, and the first reference signal triggering or activation signaling are used to indicate the terminal and send the first reference signal according to the resource allocation information of the first reference signal；The base station receives the first reference signal that the terminal triggers or activate signaling to send according to first reference signal；Wherein, the starting sending time unit of first reference signal is determined according to the starting sending time unit of associated second reference signal of first reference signal, and second reference signal is downlink reference signal.

Description

Reference signal transmission method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for transmitting a reference signal.

Background

In the existing communication system, some reference signals are configured to be transmitted. For example, if the reference signal resources are configured, the reference signal may be transmitted periodically, such as a periodic Sounding Reference Signal (SRS) and a periodic channel state information-reference signal (CSI-RS). Some reference signals are configured not to start transmission immediately, but to be triggered (trigger) before transmission. For example, an aperiodic reference signal in a Long Term Evolution (LTE) system, transmission is started only after a base station sends an activation (activate) signaling to a terminal, and the transmission is only sent once. Some reference signals are configured not to start transmission immediately, but are activated to start transmission and are transmitted periodically until a deactivation command is received. Such as semi-persistent reference signals in LTE systems.

If the base station configures a certain reference signal for the terminal and sends a trigger or activation signaling of the reference signal to the terminal, after receiving the signaling, the terminal needs to determine the sending time of the reference signal according to the time sequence relation between the trigger and the sending of the reference signal.

In the NR (5G) system, a timing relationship determination method of a trigger time and a transmission time of an aperiodic reference signal has not been given.

Disclosure of Invention

The embodiment of the application provides a reference signal transmission method and device.

In a first aspect, a method for transmitting a reference signal is provided, where the method includes:

a base station sends a first reference signal trigger or activation signaling to a terminal, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to send a first reference signal according to resource configuration information of the first reference signal;

the base station receives a first reference signal sent by the terminal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

Optionally, the initial sending time unit of the first reference signal is a time slot in which a first uplink symbol in an xth symbol after the sending of the initial symbol of the second reference signal and a symbol after the xth symbol are located, where X is an integer greater than or equal to 0; or

The initial sending time unit of the first reference signal is a time slot in which an Xth symbol is located after the initial symbol of the second reference signal is sent, wherein X is an integer greater than or equal to 0; or

The initial sending time unit of the first reference signal is the first uplink time slot in the Z-th time slot after the sending time slot of the second reference signal and the time slot after the Z-th time slot, wherein Z is an integer greater than or equal to 0; or

And the initial sending time unit of the first reference signal is the Z-th time slot after the sending time slot of the second reference signal, wherein Z is an integer greater than or equal to 0.

Optionally, the value of X is predetermined by the base station and the terminal; or the base station informs the terminal of the value of the X through signaling.

Optionally, the notifying, by the base station, the value of the X to the terminal through a signaling includes:

the base station sends downlink control information DCI to the terminal, wherein the DCI carries the value of the X; or

The base station sends a high-level signaling to the terminal, and the high-level signaling carries the value of the X; or

And the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the X, and the DCI carries a value selected from the plurality of values.

Optionally, the value of X is related to a reporting type configuration parameter of the second reference signal.

Optionally, the value of Z is predetermined by the base station and the terminal; or the base station informs the terminal of the value of the Z through signaling.

Optionally, the notifying, by the base station, the value of Z to the terminal through signaling includes:

the base station sends DCI to the terminal, and the DCI carries the value of the Z; or

The base station sends a high-level signaling to the terminal, and the high-level signaling carries the value of the Z; or

And the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the Z, and the DCI carries a value selected from the plurality of values.

Optionally, the value of Z is related to a reporting type configuration parameter of the second reference signal, or related to a reporting resource allocation parameter of the second reference signal.

Optionally, the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal before and closest to an nth time unit, where the nth time unit is a sending time unit for the first reference signal to trigger or activate signaling; or

The starting transmission time unit of the first reference signal is determined according to the starting transmission time unit of the second reference signal associated with the first reference signal from the (n + K) 1 th time unit to the (n + K2) th time unit, wherein the nth time unit is the transmission time unit of the first reference signal triggering or activating signaling; or

The starting transmission time unit of the first reference signal is determined according to a starting time unit of a last second reference signal associated with the first reference signal transmitted before an n + K2 time unit, wherein n identifies the number of the transmission time unit of the first reference signal triggering or activating signaling, and K2 is an integer greater than or equal to 0.

Optionally, the first reference signal trigger or activation signaling is further used to instruct the terminal to receive a second reference signal associated with the first reference signal;

the method further comprises the following steps:

the base station sends a second reference signal associated with the first reference signal to the terminal, wherein the initial sending time unit of the second reference signal is the first downlink time slot in the R-th time slot after the first reference signal triggers or activates a signaling sending time slot and the subsequent time slot, and R is an integer greater than or equal to 0; or

And the starting sending time unit of the second reference signal is the R-th time slot after the first reference signal triggers or activates the signaling sending time slot, wherein R is an integer greater than or equal to 0.

Optionally, the value of R is predetermined by the base station and the terminal; or the base station informs the value of the R to the terminal through signaling.

Optionally, the notifying, by the base station, the value of the R to the terminal through signaling includes:

the base station sends DCI to the terminal, and the DCI carries the value of the R; or

The base station sends a high-level signaling to the terminal, and the high-level signaling carries the value of the R; or

And the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the R, and the DCI carries a value selected from the plurality of values.

Optionally, the base station further indicates a second reference signal associated with the first reference signal to the terminal;

the method further comprises the following steps:

and if the base station does not send the second reference signal associated with the first reference signal to the terminal within the set time range, the base station abandons the decoding of the first reference signal.

Optionally, the set time range is a fourth time range, and the fourth time range includes:

one or a consecutive plurality of time units between the nth time unit and the n + k th time unit; or

Time units before the n + k-X time unit. The value of X is a preset value, or the base station indicates the terminal through signaling, or the base station and the terminal appoint in advance, and the appointed value can be a value determined based on a certain rule;

k1 may be a preset value, or a value indicated to the terminal by the base station through signaling, or a value predetermined by the base station and the terminal and determined based on a certain rule.

Optionally, the method further comprises:

and the base station indicates the analog beam forming information for sending the first reference signal and the analog beam forming information for receiving the second reference signal to the terminal.

In a second aspect, a method for transmitting a reference signal is provided, the method including:

a terminal receives a first reference signal trigger or activation signaling sent by a base station, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to send a first reference signal according to resource configuration information of the first reference signal;

the terminal sends a first reference signal to the base station according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

Optionally, the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, which is before and closest to an nth time unit, where the nth time unit is a sending time unit of the first reference signal for triggering or activating signaling; or

The starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted from the (n + K) 1 th time unit to the (n + K2) th time unit, wherein n identifies the number of the transmission time unit of the first reference signal triggering or activating signaling; or

Optionally, the sending the first reference signal to the base station includes:

the terminal determines precoding of the first reference signal according to received information and/or channel information of a second reference signal associated with the first reference signal;

the terminal carries out precoding processing on the first reference signal according to the determined precoding;

and the terminal sends the first reference signal after precoding processing.

Optionally, the determining, by the terminal, precoding of the first reference signal according to the received reception information and/or channel information of the second reference signal includes:

and the terminal determines the precoding of the first reference signal according to the received information and/or channel information of a second reference signal associated with the first reference signal and received in a specified time range.

Optionally, the second reference signal received in the specified time range and associated with the first reference signal includes:

a first second reference signal associated with the first reference signal after the nth time unit; or

A second reference signal associated with the first reference signal prior to and closest to the nth time unit; or

A second reference signal associated with the first reference signal received for the n + K1 th time unit and the last received time unit in the n + K2 th time unit range; or

A last second reference signal associated with the first reference signal received before the (n + K) 2 th time unit;

and the nth time unit is a sending time unit of the first reference signal trigger or activation signaling.

the method further comprises the following steps:

Optionally, the terminal receives a second reference signal associated with the first reference signal according to the transmit beamforming information for the first reference signal indicated by the base station.

In a third aspect, a method for transmitting a reference signal is provided, including:

a base station sends a first reference signal trigger or activation signaling to a terminal, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to receive a first reference signal;

the base station sends a first reference signal according to the resource configuration information of the first reference signal; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

The starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted from the (n + K) 1 th time unit to the (n + K2) th time unit, wherein n identifies the number of the transmission time unit of the first reference signal triggering or activating signaling; or, the starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted before the (n + K) 2 th time unit, wherein n identifies the number of the transmission time unit of the first reference signal triggering or activating signaling, and K2 is an integer greater than or equal to 0.

the base station determines precoding of the first reference signal according to received information and/or channel information of a second reference signal associated with the first reference signal;

the base station performs precoding processing on the first reference signal according to the determined precoding;

and the base station sends the first reference signal after precoding processing.

Optionally, the determining, by the base station, precoding of the first reference signal according to the received reception information and/or channel information of the second reference signal includes:

and the base station determines the precoding of the first reference signal according to the received information and/or channel information of a second reference signal associated with the first reference signal and received in a specified time range.

Optionally, the first reference signal trigger or activation signaling is further used to instruct the terminal to transmit a second reference signal associated with the first reference signal;

the method further comprises the following steps:

the base station receives a second reference signal which is sent by the terminal and is associated with the first reference signal, wherein the initial sending time unit of the second reference signal is the first uplink time slot in the R-th time slot after the first reference signal triggers or activates a signaling sending time slot and the subsequent time slot, and R is an integer which is greater than or equal to 0; or the starting sending time unit of the second reference signal is an R-th time slot after the first reference signal triggers or activates a signaling sending time slot, wherein R is an integer greater than or equal to 0.

Optionally, the method further comprises:

In a fourth aspect, a method for transmitting a reference signal is provided, where the method includes:

a terminal receives a first reference signal trigger or activation signaling sent by a base station, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to receive a first reference signal according to resource configuration information of the first reference signal;

the terminal receives a first reference signal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

The starting transmission time unit of the first reference signal is determined according to the starting transmission time unit of the second reference signal associated with the first reference signal from the (n + K) 1 th time unit to the (n + K2) th time unit, wherein the nth time unit is the transmission time unit of the first reference signal triggering or activating signaling; or, the starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted before the (n + K) 2 th time unit, wherein n identifies the number of the transmission time unit of the first reference signal triggering or activating signaling, and K2 is an integer greater than or equal to 0.

the method further comprises the following steps:

the terminal sends a second reference signal associated with the first reference signal to the base station, wherein the initial sending time unit of the second reference signal is the first uplink time slot in the R-th time slot after the first reference signal triggers or activates a signaling sending time slot and the subsequent time slot, and R is an integer greater than or equal to 0; or the starting sending time unit of the second reference signal is an R-th time slot after the first reference signal triggers or activates a signaling sending time slot, wherein R is an integer greater than or equal to 0.

the method further comprises the following steps:

and if the terminal does not send the second reference signal associated with the first reference signal to the base station within the set time range, the terminal abandons the decoding of the first reference signal.

Optionally, the terminal sends a second reference signal associated with the first reference signal according to the received beamforming information for the first reference signal indicated by the base station.

In a fifth aspect, a base station is provided, including:

a sending module, configured to send a first reference signal trigger or activation signaling to a terminal, where the first reference signal trigger or activation signaling is used to instruct the terminal to send a first reference signal according to resource configuration information of the first reference signal;

a receiving module, configured to receive a first reference signal sent by the terminal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

In a sixth aspect, there is provided an apparatus comprising:

a receiving module, configured to receive a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct a terminal to send a first reference signal according to resource configuration information of the first reference signal;

a sending module, configured to send a first reference signal to the base station according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

In a seventh aspect, a base station is provided, including:

a sending module, configured to send a first reference signal trigger or activation signaling to a terminal, where the first reference signal trigger or activation signaling is used to instruct the terminal to receive a first reference signal;

a receiving module, configured to send a first reference signal according to the resource configuration information of the first reference signal; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

In an eighth aspect, there is provided a terminal comprising:

a receiving module, configured to receive a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct a terminal to receive a first reference signal according to resource configuration information of the first reference signal;

a sending module, configured to trigger or activate a signaling according to the first reference signal to receive the first reference signal; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

In a ninth aspect, there is provided a base station comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is configured to read a program in the memory and execute the method of any of the first aspect.

In a tenth aspect, there is provided a terminal comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is configured to read a program in the memory and execute the method of any of the second aspects.

In an eleventh aspect, there is provided a base station comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is configured to read a program in the memory and execute the method of any of the third aspects.

In a twelfth aspect, a terminal is provided, which includes: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is configured to read a program in the memory and execute the method of any one of the above fourth aspects.

In a thirteenth aspect, there is provided a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any of the above first aspects.

In a fourteenth aspect, there is provided a computer storage medium having computer-executable instructions stored thereon for causing the computer to perform the method of any of the second aspects above.

In a fifteenth aspect, there is provided a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any of the above third aspects.

In a sixteenth aspect, there is provided a computer storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the fourth aspects above.

Drawings

FIG. 1 is a schematic diagram of a system architecture suitable for use in embodiments of the present application;

fig. 2 is a schematic diagram illustrating a transmission flow of an uplink reference signal according to an embodiment of the present application;

fig. 3 is a schematic diagram of a downlink reference signal transmission flow provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal according to another embodiment of the present application;

fig. 8 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal according to another embodiment of the present application.

Detailed Description

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.

(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It should be noted that some specific implementations of "associating the first reference signal with the second reference signal" described in the embodiments of the present invention include, but are not limited to:

the base station indicates, to the terminal through signaling, that the resource corresponding to the first reference signal is associated with the resource of the second reference signal, for example, the first reference signal is an SRS signal, and the second reference signal is a CSI-RS signal. The association of the first reference signal and the second reference signal is the association of the SRS resource and the CSI-RS resource, namely, a certain SRS resource ID is associated with one CSI-RSresource ID, namely, the SRS transmission corresponding to the SRS resource ID has an association relation with the CSI-RS transmission corresponding to the CSI-RS resource ID; or,

the base station indicates, to the terminal through signaling, that a resource set in which a resource corresponding to the first reference signal is located is associated with a resource of the second reference signal, for example, the first reference signal is an SRS signal, and the second reference signal is a CSI-RS signal. The specific way of associating the first reference signal with the second reference signal is the association of an SRS resource set (SRS resource set) with a CSI-RS resource, that is, a certain SRS resource set ID is associated with one CSI-RS resource ID, that is, an SRS transmission of the corresponding SRS resource belonging to the SRS resource set ID has an association relationship with a CSI-RS transmission corresponding to the CSI-RS resource ID; or,

the base station indicates, to the terminal through signaling, that a resource set in which a resource corresponding to the first reference signal is located is associated with a resource of the second reference signal, for example, the first reference signal is an SRS signal, and the second reference signal is a CSI-RS signal. The specific way of associating the first reference signal with the second reference signal is the association of an SRS resource set (SRS resource set) with a CSI-RS resource set, that is, a certain SRS resource set ID is associated with one CSI-RS resource set ID, that is, the SRS transmission of the corresponding SRS resource belonging to the SRS resource set ID has an association relationship with the CSI-RS transmission of the corresponding CSI-RS resource belonging to the CSI-RS resource set ID.

Referring to fig. 1, a schematic diagram of a possible communication scenario provided in the embodiment of the present application is shown. As shown in fig. 1, a terminal 110 accesses a wireless network through a Radio Access Network (RAN) node 120 to acquire a service of an external network (e.g., the internet) through the wireless network or to communicate with other terminals through the wireless network.

Among them, a terminal is also called User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., and is a device providing voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like.

The RAN is the part of the network that accesses the terminal to the wireless network. A RAN node (or device) is a node (or device) in a radio access network, which may also be referred to as a base station. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., a home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node.

The communication architecture may be an access network architecture in a 5G system, an Evolution version of a Long Term Evolution (LTE) system, or other Orthogonal Frequency Division Multiplexing (OFDM) system or a Discrete Fourier Transform-Spread OFDM (DFT-S-OFDM) system.

The embodiments of the present application take a base station and a terminal as examples for description.

The network architecture described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that as the network architecture evolves, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The precoding in the embodiment of the present application may be referred to as precoding in the analog domain; or, precoding in the digital domain; or, mixed pre-coding in analog and digital domains; or, beam forming in analog domain; or, beamforming in the digital domain; or, hybrid beamforming in analog and digital domains; or, beamforming. The embodiments of the present application are not limited by name.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 2, a schematic diagram of a transmission flow of an uplink reference signal provided in the embodiment of the present application is shown.

In this embodiment of the application, the first reference signal is an uplink reference signal, for example, the uplink reference signal may include an SRS. The second reference signal is a downlink reference signal, for example, the downlink reference signal may include CSI-RS. The embodiments of the present application do not limit the types of the first reference signal and the second reference signal.

In an embodiment of the present application, the second reference signal may be associated with the first reference signal. The second reference signal, which is associated with one first reference signal, may be configured by the base station through higher layer signaling. The base station may associate the identifier of the second reference signal with the identifier of the first reference signal in advance, and transmit the identifier of the second reference signal associated with the identifier of the first reference signal to the terminal.

The process may include:

s201: the base station sends a first reference signal trigger or activation signaling to the terminal.

Alternatively, the base station may send the first reference signal trigger or activation signaling through Downlink Control Information (DCI). Here, the "first reference signal trigger or activation signaling" is used to distinguish from the "second reference signal trigger or activation signaling", i.e., to partition two different signaling. It should be noted that, in the embodiment of the present application, the naming manner of the "first reference signal trigger or activation signaling" and the "second reference signal trigger or activation signaling" is not limited.

Optionally, the first reference signal trigger or activation signaling is used to instruct the terminal to send the first reference signal according to the resource configuration information of the first reference signal.

Wherein the resource configuration information of the first reference signal may include resources and/or resource sets of the first reference signal. The set of resources for the first reference signal may include one or more resources for the first reference signal, and the resource for one first reference signal may include one or more resource configuration parameters. For example, taking SRS as an example, one SRS resource set (srsrsresource set) may include one or more SRS resource configurations, and one SRS resource configuration may include SRS port number, SRS time domain type indication, SRS period, SRS time-frequency resource position in one slot (slot), and the like. It should be noted that, in the embodiment of the present application, the triggering or activating signaling of the first reference signal may correspond to one triggering information to simultaneously trigger the transmission of multiple reference signals or one triggering information to trigger the transmission of only one reference signal, which is not limited in the embodiment of the present application.

The resource configuration information of the first reference signal may be configured for the terminal by the base station.

In the embodiment of the present application, for convenience of description, a sending time unit of the first reference signal triggering or activating signaling is referred to as an nth time unit, where n may be a number of the time unit. The time units may be time slots, or other granularity of time units. Taking SRS as an example, in S201, a base station sends an SRS trigger or activation signaling to a terminal at slot n for an SRS resource or an SRS resource set configured for the terminal.

S202: and after receiving the first reference signal triggering or activating signaling, the terminal sends the first reference signal according to the signaling.

In this step, the terminal may determine the initial sending time unit of the first reference signal according to the initial sending time unit of the second reference signal associated with the first reference signal, that is, determine a timing relationship between the trigger time and the sending time of the first reference signal, and send the first reference signal according to the determined timing relationship and the resource configuration information of the first reference signal.

Optionally, the initial sending time unit of the first reference signal is a time slot in which a first uplink symbol in an xth symbol after the sending of the initial symbol of the second reference signal and a symbol after the xth symbol are located, where X is an integer greater than or equal to 0.

Optionally, the initial sending time unit of the first reference signal is a time slot in which a first symbol, whose global number satisfies y + X, of all radio frames is located, where X is an integer greater than or equal to 0, and y is a global number of a symbol occupied by the second reference signal in all radio frames. Taking an example that a slot (slot) includes 14 symbols, the symbol number in slot 0 is [0,1,2, … 14], and the symbol number in slot n is: [ n 14+1, n 14+2, …, n 14+14 ]. Under the scheme, if the symbol with the global number y + x in all the radio frames is not an uplink symbol, the terminal can abandon the first reference signal transmission indicated by the first reference signal trigger signaling; accordingly, the base station assumes that no uplink resource for transmitting the first reference signal is allocated for the first reference signal trigger this time.

Optionally, the value of X may be predetermined by the base station and the terminal, and is a fixed value. The value of X may also be notified to the terminal by the base station through signaling.

Optionally, the base station may notify the terminal of the value of X in the following manner:

mode 1: and the base station sends DCI to the terminal, wherein the DCI carries the value of the X. For example, the base station may be through DCIA number of bits to indicate the value of X, where M is a predefined number of possible values of X.

Mode 2: and the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the value of the X. The higher layer signaling may include Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling. The embodiment of the present application does not limit the type of the high layer signaling.

Mode 3: and the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the X, and the DCI carries a value selected from the plurality of values. For example, the base station configures M possible values of X for the terminal through RRC signaling, and then configures the M possible values of X for the terminal through DCIOne bit to indicate the specifics of XAnd (4) taking values.

The base station can configure the time sequence relationship between the triggering and the sending of the first reference signal more flexibly through the scheme of signaling the value of the X, so as to adapt to different requirements.

Optionally, the value of X is related to a reporting type configuration parameter of a second reference signal (here, a second reference signal associated with the first reference signal). Taking the second reference signal as the CSI-RS as an example, X is a value related to reporting type configuration of the CSI-RS. For example, if the reporting configuration of the CSI-RS (e.g., ReportConfig in a 5G system) is that the CSI-RS does not perform CSI reporting (e.g., is configured as "No Report" in the 5G system), X takes the value of X1; if the reporting configuration of the CSI-RS (e.g., ReportConfig in the 5G system) performs CSI reporting for the CSI-RS (e.g., configuration other than "No Report" in the 5G system), the value X is X2. Wherein X1 is an integer not less than 0, and X2 is a positive integer not equal to X1.

Optionally, the initial sending time unit of the first reference signal is a first uplink time slot in a Z-th time slot after the sending time slot of the second reference signal and a time slot after the Z-th time slot, where Z is an integer greater than or equal to 0. That is, the initial transmission time unit of the first reference signal is a first uplink timeslot whose timeslot number satisfies m + Z, where m is the number of the transmission timeslot of the second reference signal, Z is an integer greater than or equal to Z, and Z is an integer greater than or equal to 0. The first uplink timeslot satisfying m + z may be the m + z th uplink timeslot or the subsequent uplink timeslot.

Optionally, the initial transmission time unit of the first reference signal is a Z-th time slot after the transmission time slot of the second reference signal, where Z is an integer greater than or equal to 0. That is, the initial transmission time unit of the first reference signal is a slot with a slot number of m + Z, where m is the number of the transmission slot of the second reference signal, and Z is an integer greater than or equal to 0. Under the scheme, if the time slot with the time slot number of m + Z is not the uplink time slot, the terminal may give up the first reference signal transmission indicated by the first reference signal trigger signaling this time; accordingly, the base station assumes that no uplink resource for transmitting the first reference signal is allocated for the first reference signal trigger this time.

Optionally, the value of Z may be predetermined by the base station and the terminal, and the value of Z is a fixed value. The value of Z may also be notified to the terminal by the base station through signaling.

Optionally, the base station may notify the terminal of the value of Z in the following manner:

mode 1: and the base station sends DCI to the terminal, wherein the DCI carries the value of the Z. For example, the base station may be through DCIA number of bits to indicate the value of Z, where M is a predefined number of possible values of Z.

Mode 2: and the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the value of the Z. Wherein the higher layer signaling may comprise RRC signaling or MAC signaling. The embodiment of the present application does not limit the type of the high layer signaling.

Mode 3: and the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the Z, and the DCI carries a value selected from the plurality of values. For example, the base station configures M possible values of Z for the terminal through RRC signaling, and then configures the M possible values of Z through DCIA bit to indicate the specific value of Z.

The base station can configure the time sequence relationship between the triggering and the sending of the first reference signal more flexibly by signaling the value-taking scheme of the Z, so as to adapt to different requirements.

Optionally, the value of Z is related to a reporting type configuration parameter of a second reference signal (here, a second reference signal associated with the first reference signal). Taking the second reference signal as the CSI-RS as an example, if the reporting configuration of the CSI-RS (e.g., ReportConfig in the 5G system) is that the CSI-RS does not perform CSI reporting (e.g., configured as "nocreport" in the 5G system), the value of Z is Z1; if the reporting configuration of the CSI-RS (e.g., ReportConfig in the 5G system) performs CSI reporting for the CSI-RS (e.g., configuration other than "No Report" in the 5G system), the value of Z is Z2. Wherein Z1 is an integer not less than 0, and Z2 is a positive integer not equal to X1.

Optionally, the value of Z is related to a reported resource allocation parameter of a second reference signal (here, a second reference signal associated with the first reference signal). Taking the second reference signal as the CSI-RS as an example, if the CSI reporting resource of the CSI-RS is scheduled in advance or indicated by the base station to be at the tth time slot after the CSI-RS sending time slot. Z is t + Q, where Q is a pre-agreed value or a value indicated by the base station to the terminal.

Alternatively, the terminal may determine the starting transmission time unit of the first reference signal according to the time position of the second reference signal (here, the second reference signal associated with the first reference signal) received in the specified time range. Optionally, the time position of the second reference signal is a start symbol of the second reference signal transmission, or the time position of the second reference signal is a last symbol of the second reference signal transmission, or the time position of the second reference signal is a time slot in which the second reference signal transmission is located.

In some embodiments, the starting transmission time unit of the first reference signal may be determined according to a time position of a second reference signal associated with the first reference signal before and closest to an nth time unit, where the nth time unit is a transmission time unit for which the first reference signal triggers or activates signaling. For example, taking the nth time unit as a time unit for the terminal to receive the first reference signal trigger or activation signaling, and taking the CSI-RS with resource ID as the associated CSI (i.e., the first reference signal) as the second reference signal associated with the SRS, the terminal may determine the initial transmission time unit of the SRS according to the time position of the first received CSI-RS with resource ID as the associated CSI-RS, which is before the nth time unit and is closest to the nth time unit or closest to the transmission time of the first reference signal trigger or activation signaling.

In other examples, the starting transmission time unit of the first reference signal may be determined according to the starting transmission time unit of the last second reference signal associated with the first reference signal transmitted from the (n + K1) th time unit to the (n + K2) th time unit, or the starting transmission time unit of the first reference signal may be determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted before the (n + K2) th time unit, where n denotes the number of the transmission time unit where the first reference signal triggers or activates signaling, and K2 is an integer greater than or equal to 0. Wherein n denotes the number of transmission time units for which the first reference signal triggers or activates signaling, K1 is an integer greater than or equal to 0 or an integer less than zero, and K2 is an integer greater than or equal to 0. The K1 and the K2 may be preset values of the terminal, or values pre-agreed by the terminal and the base station, or values indicated to the terminal by the base station through signaling. For example, taking the nth time unit as a time unit for the terminal to receive the first reference signal trigger or activation signaling, and taking the CSI-RS with resource ID of associated CSI-RS resource ID as the second reference signal associated with the resource configuration information of SRS (i.e. the first reference signal) as an example, the terminal may determine the initial transmission time unit of SRS according to the time position of the last CSI-RS with resource ID of associated CSI-RS received within the range of [ n-K1, n + K2] of the slot number.

S203: and the base station receives a first reference signal which is triggered or activated by the terminal according to the first reference signal and is sent by the signaling.

In this step, the base station may determine, according to a starting transmission time unit of a second reference signal associated with the first reference signal, a transmission time unit of the first reference signal or a receiving time unit of the first reference signal (the transmission time unit of the first reference signal and the receiving time unit of the first reference signal are equivalent to each other), that is, determine a timing relationship between a trigger time and a transmission time of the first reference signal, and receive the first reference signal transmitted by the terminal according to the determined timing relationship and resource configuration information of the first reference signal. The method for the base station to determine the initial sending time unit of the first reference signal is the same as the method adopted by the terminal.

In the above embodiments of the present application, with respect to the timing relationship between the sending of the reference signal and the triggering, the base station may activate the transmission of the second reference signal associated with the base station at or before the time when the transmission of the first reference signal is triggered, so that the terminal may send the first reference signal faster, and thus the terminal is more flexible.

Optionally, the terminal may determine precoding of the first reference signal according to the reception information and/or channel information of the second reference signal, perform precoding processing on the first reference signal with the determined precoding, and then transmit the precoded first reference signal. Since the receiving information and/or the channel information of the second reference signal may reflect the state of the current channel, the precoding of the first reference signal determined according to the receiving information and/or the channel information of the second reference signal may be matched with the state of the current channel, so that the first reference signal is processed by using the precoding and then transmitted, and the transmission performance of the first reference signal may be improved.

Alternatively, the terminal may determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal associated with the first reference signal received at a specified time range.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: a second reference signal of the first transmission after the nth time unit. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling. For example, if the CSI-RS with the resource ID of the associated CSI-RS resource ID is the second reference signal associated with the SRS, the terminal may determine the precoding of the SRS according to the received information and/or channel information of the CSI-RS with the first resource ID of the associated CSI-RS resource ID after the SRS triggers or activates signaling.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: a second reference signal that is prior to and closest to the nth time unit. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling. For example, the CSI-RS with the resource ID of the associated CSI-RS resource ID is the second reference signal associated with the SRS, and the terminal may determine the precoding of the SRS according to the received information and/or channel information of the CSI-RS with the resource ID of the associated CSI-RS, which is received first closest to the SRS trigger or activation signaling before the SRS trigger or activation signaling.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: the last second reference signal received in the range of the (n + K) 1 th time cell and the (n + K2) th time cell. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling, T1 is an integer greater than or equal to 0, T1 is an integer greater than or equal to 0, and T1 is greater than T2. For example, the CSI-RS with resource ID of the assisted CSI-RS resource ID is the second reference signal associated with the resource configuration information of the SRS, the sending slot of the SRS trigger or activation signaling is the slot n, and the terminal may determine the precoding of the SRS according to the receiving information and/or the channel information of the CSI-RS with the last resource ID of the assisted CSI-RS resource ID received in the slot n-K1, n + K2.

Optionally, in some embodiments, after receiving a second reference signal associated with a first reference signal, the terminal may reserve the reception information and/or channel of the second reference signal for a period of time, so that when a subsequent base station sends a first reference signal trigger or activation signaling, the terminal may determine precoding of the first reference signal according to the saved information.

Further, after the terminal receives a new second reference signal associated with the first reference signal, the terminal may discard the reception information and/or channel information of the second reference signal that is previously retained, and retain the reception information and/or channel information of the newly received second reference signal.

Optionally, in other embodiments, after receiving the second reference signal associated with the first reference signal, the terminal may determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal, and reserve the precoding for a period of time, so that when a subsequent base station sends a first reference signal trigger or activation signaling, the terminal may perform precoding processing on the first reference signal according to the saved precoding.

Further, after the terminal receives a new second reference signal associated with the first reference signal, the terminal may discard the precoding of the first reference signal calculated based on the reception information and/or the channel information of the second reference signal, which is retained before, and retain the precoding of the first reference signal calculated according to the reception information and/or the channel information of the newly received second reference signal.

Optionally, on the basis of the foregoing embodiments, the first reference signal trigger or activation signaling sent by the base station may be used to instruct the terminal to send the first reference signal according to the resource configuration information of the first reference signal, and may also be used to instruct the terminal to receive the second reference signal associated with the first reference signal. The base station transmits a second reference signal associated with the first reference signal to the terminal starting at a start transmission time unit of the second reference signal associated with the first reference signal.

Optionally, the initial sending time unit of the second reference signal is a first downlink time slot in an R-th time slot after the first reference signal triggers or activates a signaling sending time slot and a time slot thereafter, where R is an integer greater than or equal to 0; or the starting sending time unit of the second reference signal is an R-th time slot after the first reference signal triggers or activates a signaling sending time slot, wherein R is an integer greater than or equal to 0.

Optionally, the initial sending time unit of the second reference signal is a first downlink time unit satisfying n + R, where R is an integer greater than or equal to R, and R is an integer greater than or equal to 0. In particular, R ═ 0. Accordingly, the terminal may receive the second reference signal associated with the first reference signal from the transmission start unit of the second reference signal, and may further determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal.

The first downlink time unit satisfying n + r may be a time unit in which the first reference signal may be transmitted in a time unit starting from the nth + r time unit. For example, if R ═ R, the first downlink time unit satisfying n + R may be the (n + R) th time unit (if the time unit is a downlink time unit), and if the (n + R) th time unit is not a downlink time unit, the subsequent first downlink time unit is the transmission time unit of the second reference signal.

Optionally, the value of R may be predetermined by the base station and the terminal. The value of R may also be notified to the terminal by the base station through signaling.

Optionally, the base station may notify the value of R to the terminal in the following manner:

mode 1: and the base station sends DCI to the terminal, wherein the DCI carries the value of the R. For example, the base station may be through DCIA number of bits to indicate the value of R, where M is the number of possible values of the predefined RAnd (4) counting.

Mode 2: and the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the value of the R. Wherein the higher layer signaling may comprise RRC signaling or MAC signaling. The embodiment of the present application does not limit the type of the high layer signaling.

Mode 3: and the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the R, and the DCI carries a value selected from the plurality of values. For example, the base station configures M possible values of R for the terminal through RRC signaling, and then configures the M possible values of R through DCIA bit to indicate the specific value of R.

Optionally, whether the base station triggers or activates transmission of the second reference signal associated with the first reference signal currently or previously, the base station may send a first reference signal trigger or activation signaling to instruct the terminal to send the first reference signal according to the resource configuration information of the first reference signal and instruct the terminal to receive the second reference signal associated with the first reference signal.

Optionally, a first reference signal trigger or activation signaling sent by the base station to the terminal may have different meanings in different cases, and in some cases, the first reference signal trigger or activation signaling is used to instruct the terminal to send the first reference signal according to the resource configuration information of the first reference signal, and in other cases, the first reference signal trigger or activation signaling is used to instruct the terminal to send the first reference signal according to the resource configuration information of the first reference signal and instruct the terminal to receive the second reference signal associated with the first reference signal.

In some embodiments, if the base station transmits the second reference signal associated with the first reference signal to the terminal in a time unit between the nth-T3 time unit and the n + T4 time unit, the first reference signal triggers or activates signaling only for instructing the terminal to transmit the first reference signal according to the resource configuration information of the first reference signal.

If the base station does not transmit the second reference signal associated with the first reference signal to the terminal for a time unit between the nth-T3 time unit and the n + T4 time unit, the first reference signal trigger or activation signaling is used not only to instruct the terminal to transmit the first reference signal according to the resource configuration information of the first reference signal, but also to instruct the terminal to receive the second reference signal associated with the first reference signal. The base station starts transmitting a second reference signal associated with the first reference signal in a time unit satisfying n + r. Accordingly, the terminal starts receiving the second reference signal associated with the first reference signal in the time unit satisfying n + r, and may further determine precoding of the first reference signal according to the reception information and/or channel information of the second reference signal. Wherein R is more than or equal to R, T4 is more than or equal to R, T4 is more than or equal to 0, n-T3 is more than or equal to n + T4. As a specific example, T4 is 0.

In still other embodiments, if the base station transmits second reference signal trigger or activation signaling to the terminal for instructing the terminal to receive the second reference signal associated with the first reference signal in a time unit between the nth-T5 time unit and the n + T6 time unit, the first reference signal trigger or activation signaling is only for instructing the terminal to transmit the first reference signal according to the resource configuration information of the first reference signal.

If the base station does not transmit the second reference signal trigger or activation signaling to the terminal for a time unit between the nth-T5 time unit and the n + T6 time unit, the first reference signal trigger or activation signaling is used not only to instruct the terminal to transmit the first reference signal according to the resource configuration information of the first reference signal, but also to instruct the terminal to receive the second reference signal associated with the first reference signal. Accordingly, the terminal starts receiving the second reference signal associated with the first reference signal in the time unit satisfying n + r, and may further determine precoding of the first reference signal according to the reception information and/or channel information of the second reference signal. Wherein R is more than or equal to R, T6 is more than or equal to R, T6 is more than or equal to 0, n-T5 is more than or equal to n + T6. As a specific example, T6 is 0.

Optionally, on the basis of any of the foregoing embodiments of the present application, to avoid or reduce resource collision between signals, the terminal may send the first reference signal on part or all of the time-frequency resources of the first reference signal allocated to the terminal, for example, the following cases may be included:

case 1 a: and the terminal starts from the starting time unit of the first reference signal and transmits the first reference signal resource on the time frequency resource which is configured for the first reference signal and does not conflict with any other uplink signal. Taking the SRS as an example, if the time-frequency resource of the SRS does not collide with other uplink signals in the time-frequency resource starting from the starting time slot of the SRS, the terminal transmits the SRS in the time-frequency resource of the SRS.

Case 2 a: the terminal starts from a starting time unit of a first reference signal, and transmits a first reference signal resource on a time frequency resource which conflicts with a first uplink signal in time frequency resources configured for the first reference signal, wherein the priority of the first uplink signal is lower than that of the first reference signal. Taking the SRS as an example, if the time-frequency resource of the SRS collides with part or all of the time-frequency resources of other uplink signals from the time-frequency resource starting from the starting time slot of the SRS, but the SRS has a higher priority, the terminal transmits the SRS on the time-frequency resource of the SRS.

Case 3 a: the terminal does not send the first reference signal on a time frequency resource which is in conflict with a second uplink signal in the time frequency resources configured by the first reference signal from a starting time unit of the first reference signal, wherein the priority of the second uplink signal is higher than that of the first reference signal. Taking the SRS as an example, if the time-frequency resource of the SRS collides with part or all of the time-frequency resources of other uplink signals from the time-frequency resource starting from the starting time slot of the SRS, and the SRS has a lower priority, the terminal transmits the SRS on the SRS time-frequency resource where the collision does not occur, and does not transmit the SRS on the SRS resource where the collision occurs.

Accordingly, the base station may receive the first reference signal sent by the terminal on a part of or all of the time-frequency resources allocated for the first reference signal according to the resource collision condition between the signals, for example, the following conditions may be included:

case 1 b: the base station starts from a starting time unit of a first reference signal, and receives the first reference signal sent by a terminal on a time frequency resource which does not conflict with any other uplink signal in time frequency resources configured for the first reference signal;

case 2 b: the base station receives a first reference signal sent by a terminal from a starting time unit of the first reference signal on a time frequency resource which is configured for the first reference signal and conflicts with a first uplink signal, wherein the priority of the first uplink signal is lower than that of the first reference signal.

Case 3 b: the base station starts from a starting time unit of a first reference signal, and gives up the first reference signal sent by a receiving terminal on a time frequency resource which conflicts with a second uplink signal in time frequency resources configured for the first reference signal, wherein the priority of the second uplink signal is higher than that of the first reference signal.

Alternatively, the transmission and reception of reference signals requires analog beamforming to be considered. And the base station indicates the beam forming information sent by the first reference signal and the beam forming information received by the second reference signal to the terminal. In particular, the beamforming information may be implemented in QCL (quadrature-beamforming) signals associated with a reference. For example, the first reference signal is an SRS signal, and the base station instructs SRS resource 2 of spatial QCL of an SRS resource (which is referred to as SRS resource 1) corresponding to the SRS signal, that is, instructs the terminal to perform SRS transmission using the same transmission beam as that of SRS resource 2. Optionally, when the base station indicates the terminal to send the beamforming information of the first reference signal and the beamforming information of the second reference signal reception, and the first reference signal is associated with the second reference signal, the terminal uses the sending beamforming information of the first reference signal indicated by the base station to receive the second reference signal.

Referring to fig. 3, a schematic diagram of a transmission flow of a downlink reference signal provided in the embodiment of the present application is shown.

In this embodiment of the application, the first reference signal is a downlink reference signal, for example, the downlink reference signal may include a CSI-RS. The second reference signal is an uplink reference signal, for example, the downlink reference signal may include an SRS. The embodiments of the present application do not limit the types of the first reference signal and the second reference signal.

The process may include:

s301: the base station sends a first reference signal trigger or activation signaling to the terminal.

Optionally, the base station may send the first reference signal trigger or activation signaling through DCI. Here, the "first reference signal trigger or activation signaling" is used to distinguish from the "second reference signal trigger or activation signaling", i.e., to partition two different signaling. It should be noted that, in the embodiment of the present application, the naming manner of the "first reference signal trigger or activation signaling" and the "second reference signal trigger or activation signaling" is not limited.

Optionally, the first reference signal trigger or activation signaling is used to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal.

Wherein the resource configuration information of the first reference signal may include resources and/or resource sets of the first reference signal. The set of resources for the first reference signal may include one or more resources for the first reference signal, and the resource for one first reference signal may include one or more resource configuration parameters. For example, taking CSI-RS as an example, one CSI-RS resource set (CSI-RS resource set) may include one or more CSI-RS resource configurations, and one CSI-RS resource configuration may include the number of CSI-RS ports, a time domain type indication of CSI-RS, a period of CSI-RS, a time-frequency resource position of CSI-RS in one slot (slot), and the like. It should be noted that, in the embodiment of the present application, the triggering or activating signaling of the first reference signal may correspond to one triggering information to simultaneously trigger the transmission of multiple reference signals or one triggering information to trigger the transmission of only one reference signal, which is not limited in the embodiment of the present application.

In the embodiment of the present application, for convenience of description, a sending time unit of the first reference signal triggering or activating signaling is referred to as an nth time unit, where n may be a number of the time unit. The time units may be time slots, or other granularity of time units. Taking CSI-RS as an example, in S201, a base station sends a CSI-RS trigger or activation signaling to a terminal at slot n for a CSI-RS resource or an SRS resource set configured for the terminal.

S302: and after receiving the first reference signal trigger or activation signaling, the terminal receives the first reference signal sent by the base station according to the signaling.

Mode 2: and the base station sends a high-level signaling to the terminal, wherein the high-level signaling carries the value of the X. Wherein the higher layer signaling may comprise RRC signaling or MAC signaling. The embodiment of the present application does not limit the type of the high layer signaling.

Mode 3: and the base station sends a high-level signaling and DCI to the terminal, wherein the high-level signaling carries a plurality of values of the X, and the DCI carries a value selected from the plurality of values. For example, the base station configures M possible values of X for the terminal through RRC signaling, and then configures the M possible values of X for the terminal through DCIA bit to indicate the specific value of X.

Optionally, the value of X is related to a reporting type configuration parameter of a second reference signal (here, a second reference signal associated with the first reference signal).

Optionally, the initial sending time unit of the first reference signal is a first downlink time slot in a Z-th time slot after the sending time slot of the second reference signal and a time slot after the Z-th time slot, where Z is an integer greater than or equal to 0. That is, the initial transmission time unit of the first reference signal is a first downlink timeslot whose timeslot number satisfies m + Z, where m is the number of the transmission timeslot of the second reference signal, Z is an integer greater than or equal to Z, and Z is an integer greater than or equal to 0. The first downlink timeslot satisfying m + z may be the m + z th downlink timeslot or the subsequent uplink timeslot.

Optionally, the initial transmission time unit of the first reference signal is a Z-th time slot after the transmission time slot of the second reference signal, where Z is an integer greater than or equal to 0. That is, the initial transmission time unit of the first reference signal is a slot with a slot number of m + Z, where m is the number of the transmission slot of the second reference signal, and Z is an integer greater than or equal to 0. Under the scheme, if the time slot with the time slot number of m + Z is not the downlink time slot, the terminal may give up the first reference signal reception indicated by the first reference signal trigger signaling this time; accordingly, the base station assumes that no uplink resource for transmitting the first reference signal is allocated for the first reference signal trigger this time.

Optionally, the value of Z is related to a reporting type configuration parameter of a second reference signal (here, a second reference signal associated with the first reference signal).

Optionally, the value of Z is related to a reported resource allocation parameter of a second reference signal (here, a second reference signal associated with the first reference signal).

In some embodiments, the starting transmission time unit of the first reference signal may be determined according to a time position of a second reference signal associated with the first reference signal before and closest to an nth time unit, where the nth time unit is a transmission time unit for which the first reference signal triggers or activates signaling. For example, taking the nth time unit as a time unit for the terminal to receive the first reference signal trigger or activation signaling, and taking the SRS with the resource ID of the associated SRS resource as the second reference signal associated with the CSI-RS (i.e., the first reference signal) as an example, the terminal may determine the initial transmission time unit of the CSI-RS according to the time position of the SRS with the resource ID of the associated SRSresource ID received first before the nth time unit and closest to the nth time unit or closest to the transmission time of the first reference signal trigger or activation signaling.

In other examples, the starting transmission time unit of the first reference signal may be determined according to the starting transmission time unit of the second reference signal associated with the first reference signal from the (n + K1) th time unit to the (n + K2) th time unit, or, the starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted before the (n + K) 2 time unit, wherein n identifies the number of transmission time units for which the first reference signal triggers or activates signaling, K2 is an integer greater than or equal to 0, where n denotes the number of the transmission time unit of the first reference signal trigger or activation signaling, K1 is an integer greater than or equal to 0 but may also be an integer less than zero, and K2 is an integer greater than or equal to 0. The K1 and the K2 may be preset values of the terminal, or values pre-agreed by the terminal and the base station, or values indicated to the terminal by the base station through signaling. For example, taking the nth time unit as the time unit for the terminal to receive the first reference signal trigger or activation signaling, and the SRS with the resource ID of the associated SRS resource ID as the second reference signal associated with the resource configuration information of the CSI-RS (i.e., the first reference signal) as an example, the terminal may determine the starting transmission time unit of the CSI-RS according to the time position of the SRS with the last resource ID of the associated SRS resource ID received within the range of [ n-K1, n + K2] by the slot number.

S303: and the base station receives a first reference signal which is triggered or activated by the terminal according to the first reference signal and is sent by the signaling.

Optionally, the base station may determine precoding of the first reference signal according to the reception information and/or the channel information of the second reference signal, perform precoding processing on the first reference signal with the determined precoding, and then transmit the precoded first reference signal. Since the receiving information and/or the channel information of the second reference signal may reflect the state of the current channel, the precoding of the first reference signal determined according to the receiving information and/or the channel information of the second reference signal may be matched with the state of the current channel, so that the first reference signal is processed by using the precoding and then transmitted, and the transmission performance of the first reference signal may be improved.

Alternatively, the base station may determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal associated with the first reference signal received at a specified time range.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: a second reference signal of the first transmission after the nth time unit. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling. For example, if the SRS with the resource ID of the associated SRS resource ID is the second reference signal associated with the CSI-RS, the terminal may determine precoding of the CSI-RS according to the receiving information and/or channel information of the SRS with the first resource ID of the associated SRS resource ID after the CSI-RS triggers or activates signaling.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: a second reference signal that is prior to and closest to the nth time unit. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling. For example, the SRS with the resource ID of the associated SRS resource ID is the second reference signal associated with the CSI-RS, and the base station may determine precoding of the CSI-RS according to the reception information and/or channel information of the SRS with the resource ID of the associated SRS resource ID, which is received first and closest to the CSI-RS trigger or activation signaling before the CSI-RS trigger or activation signaling.

Optionally, the second reference signal received in the specified time range (where the second reference signal refers to the second reference signal associated with the first reference signal) includes: the last second reference signal received in the range of the (n + K) 1 th time cell and the (n + K2) th time cell. The nth time unit is a sending time unit of the first reference signal trigger or activation signaling, T1 is an integer greater than or equal to 0, T1 is an integer greater than or equal to 0, and T1 is greater than T2. For example, the SRS with the resource ID of the assisted SRS resource ID is the second reference signal associated with the resource configuration information of the CSI-RS, and the transmission slot of the CSI-RS trigger or activation signaling is the slot n, the base station may determine precoding of the CSI-RS according to the reception information and/or channel information of the SRS with the last resource ID of the assisted SRS resource ID received in the slot [ n-K1, n + K2 ].

Optionally, in some embodiments, after receiving the second reference signal associated with the first reference signal, the base station may reserve the reception information and/or the channel of the second reference signal for a period of time, so that the precoding of the first reference signal may be determined according to the saved information.

Further, when the base station receives a new second reference signal associated with the first reference signal, the base station may discard the reception information and/or channel information of the previously retained second reference signal and retain the reception information and/or channel information of the newly received second reference signal.

Optionally, in other embodiments, after receiving the second reference signal associated with the first reference signal, the base station may determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal, and reserve the precoding for a period of time, so that the base station may perform precoding processing on the first reference signal according to the stored precoding.

Further, after the base station receives a new second reference signal associated with the first reference signal, the base station may discard the precoding of the first reference signal calculated based on the reception information and/or the channel information of the second reference signal, which is retained before, and retain the precoding of the first reference signal calculated based on the reception information and/or the channel information of the newly received second reference signal.

Optionally, on the basis of the foregoing embodiments, the first reference signal trigger or activation signaling sent by the base station may be used to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal, and may also be used to instruct the terminal to send a second reference signal associated with the first reference signal. The terminal transmits a second reference signal associated with the first reference signal to the base station starting at a start transmission time unit of the second reference signal associated with the first reference signal.

Optionally, the starting sending time unit of the second reference signal is a first uplink time slot in an R-th time slot after the first reference signal triggers or activates a signaling sending time slot and a time slot thereafter, where R is an integer greater than or equal to 0; or the starting sending time unit of the second reference signal is an R-th time slot after the first reference signal triggers or activates a signaling sending time slot, wherein R is an integer greater than or equal to 0.

Optionally, the initial sending time unit of the second reference signal is a first uplink time unit satisfying n + R, where R is an integer greater than or equal to R, and R is an integer greater than or equal to 0. In particular, R ═ 0. Accordingly, the base station may receive the second reference signal associated with the first reference signal from the transmission start unit of the second reference signal, and may further determine precoding of the first reference signal according to reception information and/or channel information of the second reference signal.

The first uplink time unit satisfying n + r may be a time unit in which the first reference signal may be transmitted in the time units starting from the nth + r time unit and going backward. For example, if R ═ R, the first uplink time unit satisfying n + R may be the (n + R) th time unit (if the time unit is an uplink time unit), and if the (n + R) th time unit is not an uplink time unit, the first uplink time unit thereafter is the transmission time unit of the second reference signal.

mode 1: and the base station sends DCI to the terminal, wherein the DCI carries the value of the R. For example, the base station may be through DCIA number of bits to indicate the value of R, where M is a predefined number of possible values of R.

Optionally, whether the base station triggers or activates transmission of the second reference signal associated with the first reference signal currently or previously, the base station may send a first reference signal trigger or activation signaling to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal and instruct the terminal to send the second reference signal associated with the first reference signal.

Optionally, a first reference signal trigger or activation signaling sent by the base station to the terminal may have different meanings in different cases, and in some cases, the first reference signal trigger or activation signaling is used to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal, and in other cases, the first reference signal trigger or activation signaling is used to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal and instruct the terminal to send a second reference signal associated with the first reference signal.

In some embodiments, if the terminal transmits the second reference signal associated with the first reference signal to the base station in a time unit between the nth-T3 time unit and the n + T4 time unit, the first reference signal triggers or activates signaling only to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal.

If the terminal does not transmit the second reference signal associated with the first reference signal to the base station in a time unit between the nth-T3 time unit and the n + T4 time unit, the first reference signal trigger or activation signaling is used not only to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal, but also to instruct the terminal to transmit the second reference signal associated with the first reference signal. And the terminal starts to transmit a second reference signal associated with the first reference signal in the first uplink time unit meeting the n + r. Accordingly, the base station starts to receive the second reference signal associated with the first reference signal in the first uplink time unit satisfying n + r, and may further determine precoding of the first reference signal according to the reception information and/or channel information of the second reference signal. Wherein R is more than or equal to R, T4 is more than or equal to R, T4 is more than or equal to 0, n-T3 is more than or equal to n + T4. As a specific example, T4 is 0.

In still other embodiments, if the terminal transmits second reference signal trigger or activation signaling to the base station for indicating that the terminal receives the second reference signal associated with the first reference signal in a time unit between the nth-T5 time unit and the n + T6 time unit, the first reference signal trigger or activation signaling is only for indicating that the terminal receives the first reference signal according to the resource configuration information of the first reference signal.

If the terminal does not transmit the second reference signal trigger or activation signaling to the base station in the time unit between the nth-T5 time unit and the n + T6 time unit, the first reference signal trigger or activation signaling is used not only to instruct the terminal to receive the first reference signal according to the resource configuration information of the first reference signal, but also to instruct the terminal to transmit the second reference signal associated with the first reference signal. Accordingly, the base station starts to receive the second reference signal associated with the first reference signal in the first uplink time unit satisfying n + r, and may further determine precoding of the first reference signal according to the reception information and/or channel information of the second reference signal. Wherein R is more than or equal to R, T6 is more than or equal to R, T6 is more than or equal to 0, n-T5 is more than or equal to n + T6. As a specific example, T6 is 0.

Optionally, on the basis of any of the foregoing embodiments of the present application, to avoid or reduce resource collision between signals, the base station may send the first reference signal on part or all of the time-frequency resources of the first reference signal allocated to the base station, for example, the following cases may be included:

case 1 a: the base station starts from the starting time unit of the first reference signal, and transmits the first reference signal resource on the time frequency resource which is configured for the first reference signal and does not conflict with any other downlink signals. Taking the CSI-RS as an example, if the time-frequency resource of the CSI-RS does not conflict with other uplink signals on the time-frequency resource starting from the initial timeslot of the CSI-RS, the base station sends the CSI-RS on the time-frequency resource of the CSI-RS.

Case 2 a: the base station starts from a starting time unit of a first reference signal, and transmits the first reference signal resource on a time frequency resource which is in conflict with a first downlink signal in time frequency resources configured for the first reference signal, wherein the priority of the first downlink signal is lower than that of the first reference signal. Taking the CSI-RS as an example, if the time-frequency resource of the CSI-RS conflicts with part or all of the time-frequency resources of other downlink signals on the time-frequency resource starting from the initial timeslot of the CSI-RS, but the CSI-RS has a higher priority, the terminal sends the CSI-RS on the time-frequency resource of the CSI-RS.

Case 3 a: the base station does not send the first reference signal on the time frequency resource which is in conflict with the second downlink signal in the time frequency resources configured by the first reference signal from the starting time unit of the first reference signal, wherein the priority of the second downlink signal is higher than that of the first reference signal. Taking the CSI-RS as an example, if the time-frequency resource of the SRS collides with part or all of the time-frequency resources of other downlink signals on the time-frequency resource starting from the initial timeslot of the CSI-RS, and the CSI-RS has a lower priority, the base station transmits the CSI-RS on the CSI-RS time-frequency resource where the collision does not occur, and does not transmit the SRS on the CSI-RS resource where the collision occurs.

Accordingly, the terminal may receive the first reference signal sent by the base station on a part of or all of the time-frequency resources allocated for the first reference signal according to the resource collision condition between the signals, for example, the following conditions may be included:

case 1 b: the terminal receives a first reference signal sent by a base station from a starting time unit of the first reference signal on a time frequency resource which is configured for the first reference signal and does not conflict with any other downlink signals;

case 2 b: the terminal receives a first reference signal sent by a base station on a time frequency resource which conflicts with a first downlink signal in time frequency resources configured for the first reference signal from a starting time unit of the first reference signal, wherein the priority of the first downlink signal is lower than that of the first reference signal.

Case 3 b: the first reference signal sent by the base station is abandoned and received on the time frequency resource which is in conflict with the second downlink signal in the time frequency resources configured for the first reference signal from the starting time unit of the first reference signal, wherein the priority of the second downlink signal is higher than that of the first reference signal.

Alternatively, the transmission and reception of reference signals requires analog beamforming to be considered. The base station indicates to the terminal receive beamforming information for the first reference signal and transmit beamforming information for the second reference signal. In particular, the beamforming information may be implemented in QCL (quadrature-beamforming) signals associated with a reference. For example, the first reference signal is a CSI-RS signal, and the base station indicates a CSI-RS resource 2 of a CSI-RS resource (denoted as CSI-RS resource 1) space QCL corresponding to the CSI-RS signal, that is, indicates the terminal to use the same receiving beam as the CSI-RS resource 2 for CSI-RS transmission. Optionally, when the base station indicates to the terminal the reception beamforming information for the first reference signal and the transmission beamforming information for the second reference signal, and the first reference signal is associated with the second reference signal, the base station performs transmission of the second reference signal using the reception beamforming for the first reference signal.

Based on the same technical concept, the embodiment of the present application further provides a base station, which can implement transmission of uplink reference signals in the above embodiments.

Referring to fig. 4, which is a schematic structural diagram of the base station, the base station may include: a sending module 401 and a receiving module 402.

A sending module 401, configured to send a first reference signal trigger or activation signaling to a terminal, where the first reference signal trigger or activation signaling is used to instruct the terminal to send a first reference signal according to resource configuration information of the first reference signal;

a receiving module 402, configured to receive a first reference signal sent by the terminal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

The functions of the above modules of the apparatus can be referred to the related description of the foregoing uplink reference signal transmission embodiment, and are not repeated here.

Based on the same technical concept, the embodiment of the present application further provides a terminal, which can implement transmission of the uplink reference signal in the above embodiments.

Referring to fig. 5, the terminal may include a receiving module 501 and a transmitting module 502 for a schematic structural diagram of the terminal.

A receiving module 501, configured to receive a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct the terminal to send a first reference signal according to resource configuration information of the first reference signal;

a sending module 502, configured to send a first reference signal to the base station according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

Based on the same technical concept, the embodiment of the present application further provides a base station, which can implement transmission of downlink reference signals in the above embodiments.

Referring to fig. 6, which is a schematic structural diagram of the base station, the base station may include: a sending module 601 and a receiving module 602.

A sending module 601, configured to send a first reference signal trigger or activation signaling to a terminal, where the first reference signal trigger or activation signaling is used to instruct the terminal to receive a first reference signal;

a receiving module 602, configured to send a first reference signal according to the resource configuration information of the first reference signal; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

The functions of the above modules of the apparatus can be referred to the related description of the foregoing downlink reference signal transmission embodiment, and are not repeated here.

Based on the same technical concept, the embodiment of the present application further provides a terminal, which can implement transmission of downlink reference signals in the above embodiments.

Referring to fig. 7, which is a schematic structural diagram of the terminal, the terminal may include: a receiving module 701 and a sending module 702.

A receiving module 701, configured to receive a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct the terminal to receive a first reference signal according to resource configuration information of the first reference signal;

a sending module 702, configured to receive a first reference signal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

Referring to fig. 8, a schematic structural diagram of a base station provided in the embodiment of the present application is shown, where the base station may include: a processor 801, a memory 802, a transceiver 803, and a bus interface.

The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations. The transceiver 803 is used for receiving and transmitting data under the control of the processor 801.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 802, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.

The processes disclosed in the embodiments of the present invention can be applied to the processor 801 or implemented by the processor 801. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 801. The processor 801 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 801 is configured to read a program in the memory 802 and execute the uplink reference signal transmission procedure or the downlink reference signal transmission procedure implemented on the base station side, or execute the uplink reference signal transmission procedure and the downlink reference signal transmission procedure.

Referring to fig. 9, a schematic structural diagram of a terminal provided in the embodiment of the present application is shown, where the terminal may include: a processor 901, a memory 902, a transceiver 903, and a bus interface.

The processor 901 is responsible for managing a bus architecture and general processing, and the memory 902 may store data used by the processor 901 in performing operations. The transceiver 903 is used for receiving and transmitting data under the control of the processor 901.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 901, and various circuits, represented by memory 902, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 901 is responsible for managing a bus architecture and general processing, and the memory 902 may store data used by the processor 901 in performing operations.

The process disclosed in the embodiment of the present invention may be applied to the processor 901, or implemented by the processor 901. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The processor 901 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 901 is configured to read a program in the memory 902 and execute the uplink reference signal transmission procedure or the downlink reference signal transmission procedure implemented on the terminal side, or execute the uplink reference signal transmission procedure and the downlink reference signal transmission procedure.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

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

2. The method of claim 1, wherein the initial transmission time unit of the first reference signal is a time slot in which a first uplink symbol is located in an xth symbol after a transmission initial symbol of the second reference signal and a symbol after the xth symbol, where X is an integer greater than or equal to 0; or

3. The method of claim 2, wherein the value of X is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the X through signaling.

4. The method of claim 2, wherein a value of X is related to a reporting type configuration parameter of the second reference signal.

5. The method of claim 2, wherein the value of Z is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the Z through signaling.

6. The method of claim 2, wherein a value of Z is related to a reporting type configuration parameter of the second reference signal or a reporting resource allocation parameter of the second reference signal.

7. The method of claim 1, wherein the starting transmission time unit of the first reference signal is determined according to a starting transmission time unit of a second reference signal associated with the first reference signal that is prior to and closest to an nth time unit, wherein the nth time unit is a transmission time unit of the first reference signal triggering or activating signaling; or

The starting transmission time unit of the first reference signal is determined according to the starting transmission time unit of the last second reference signal associated with the first reference signal transmitted from the (n + K1) th time unit to the (n + K2) th time unit, or the starting transmission time unit of the first reference signal is determined according to the starting time unit of the last second reference signal associated with the first reference signal transmitted before the (n + K2) th time unit, wherein n identifies the number of the transmission time unit of the first reference signal trigger or activation signaling, K2 is an integer greater than or equal to 0, and the nth time unit is the transmission time unit of the first reference signal trigger or activation signaling; or

8. The method of claim 1, wherein the first reference signal trigger or activation signaling is further for instructing the terminal to receive a second reference signal associated with the first reference signal;

the method further comprises the following steps:

9. The method of claim 8, wherein the value of R is pre-agreed by the base station and the terminal; or the base station informs the value of the R to the terminal through signaling.

10. The method of claim 1, wherein the base station further indicates to the terminal a second reference signal associated with the first reference signal;

the method further comprises the following steps:

11. The method of claim 1, wherein the method further comprises:

12. A method for reference signal transmission, the method comprising:

13. The method of claim 12, wherein the initial transmission time unit of the first reference signal is a time slot in which a first uplink symbol of an xth symbol after the transmission of the initial symbol of the second reference signal and symbols after the xth symbol is located, where X is an integer greater than or equal to 0; or

14. The method of claim 13, wherein the value of X is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the X through signaling.

15. The method of claim 13, wherein a value of X is related to a reporting type configuration parameter of the second reference signal.

16. The method of claim 13, wherein the value of Z is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the Z through signaling.

17. The method of claim 13, wherein a value of Z is related to a reporting type configuration parameter of the second reference signal or a reporting resource allocation parameter of the second reference signal.

18. The method of claim 12, wherein the starting transmission time unit of the first reference signal is determined according to a starting transmission time unit of a second reference signal associated with the first reference signal that is prior to and closest to an nth time unit, wherein the nth time unit is a transmission time unit in which the first reference signal triggers or activates signaling; or

19. The method of any of claims 12 to 18, wherein the transmitting the first reference signal to the base station comprises:

and the terminal sends the first reference signal after precoding processing.

20. The method of claim 19, wherein the terminal determining precoding of the first reference signal according to the received reception information and/or channel information of the second reference signal comprises:

21. The method of claim 20, wherein the second reference signal associated with the first reference signal received for the specified time range comprises:

A second reference signal associated with the first reference signal received for the n + K1 th time unit and the last received time unit in the n + K2 th time unit range; or,

the nth time unit is a sending time unit for triggering or activating the signaling by the first reference signal; or

22. The method of claim 12, wherein the base station further indicates to the terminal a second reference signal associated with the first reference signal;

the method further comprises the following steps:

23. The method of claim 12, wherein the terminal receives a second reference signal associated with a first reference signal according to transmit beamforming information for the first reference signal indicated by the base station.

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

25. The method of claim 24, wherein the starting transmission time unit of the first reference signal is a time slot in which a first uplink symbol is located in an xth symbol after a transmission starting symbol of the second reference signal and a symbol thereafter, where X is an integer greater than or equal to 0; or

26. The method of claim 25, wherein the value of X is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the X through signaling.

27. The method of claim 25, wherein a value of X is related to a reporting type configuration parameter of the second reference signal.

28. The method of claim 25, wherein the value of Z is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the Z through signaling.

29. The method of claim 25, wherein a value of Z is related to a reporting type configuration parameter of the second reference signal or a reporting resource allocation parameter of the second reference signal.

30. The method of claim 24, wherein the starting transmission time unit of the first reference signal is determined according to a starting transmission time unit of a second reference signal associated with the first reference signal that is prior to and closest to an nth time unit, wherein the nth time unit is a transmission time unit in which the first reference signal triggers or activates signaling; or

31. The method of any one of claims 24 to 30, wherein said transmitting a first reference signal to the base station comprises:

32. The method of claim 31, wherein the base station determining precoding of the first reference signal according to the received reception information and/or channel information of the second reference signal comprises:

33. The method of claim 32, wherein the second reference signal associated with the first reference signal received for the specified time range comprises:

34. The method of claim 24, wherein the first reference signal trigger or activation signaling is further for instructing the terminal to send a second reference signal associated with the first reference signal;

the method further comprises the following steps:

35. The method of claim 24, wherein the method further comprises:

36. A method for reference signal transmission, the method comprising:

37. The method of claim 36, wherein the starting transmission time unit of the first reference signal is a time slot in which a first uplink symbol is located in an xth symbol after a transmission starting symbol of the second reference signal and a symbol thereafter, where X is an integer greater than or equal to 0; or

38. The method of claim 37, wherein the value of X is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the X through signaling.

39. The method of claim 37, wherein a value of X is related to a reporting type configuration parameter of the second reference signal.

40. The method of claim 37, wherein the value of Z is pre-agreed by the base station and the terminal; or the base station informs the terminal of the value of the Z through signaling.

41. The method of claim 37, wherein a value of Z is related to a reporting type configuration parameter of the second reference signal or a reporting resource allocation parameter of the second reference signal.

42. The method of claim 36, wherein the starting transmission time unit of the first reference signal is determined according to a starting transmission time unit of a second reference signal associated with the first reference signal that is prior to and closest to an nth time unit, wherein the nth time unit is a transmission time unit of the first reference signal triggering or activating signaling; or

43. The method of claim 36, wherein the first reference signal trigger or activation signaling is further for instructing the terminal to receive a second reference signal associated with the first reference signal;

the method further comprises the following steps:

44. The method of claim 43, wherein the value of R is pre-agreed by the base station and the terminal; or the base station informs the value of the R to the terminal through signaling.

45. The method of claim 36, wherein the base station further indicates to the terminal a second reference signal associated with the first reference signal;

the method further comprises the following steps:

46. The method of claim 36, wherein the terminal transmits a second reference signal associated with a first reference signal according to receive beamforming information for the first reference signal indicated by the base station.

47. A base station, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is used for reading the program in the memory and executing:

sending a first reference signal trigger or activation signaling to a terminal through the transceiver, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to send a first reference signal according to resource configuration information of the first reference signal;

receiving, by the transceiver, a first reference signal sent by the terminal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

48. A terminal, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is used for reading the program in the memory and executing:

receiving, by the transceiver, a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct the terminal to send a first reference signal according to resource configuration information of the first reference signal;

sending a first reference signal to the base station through the transceiver according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

49. A base station, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is used for reading the program in the memory and executing:

sending a first reference signal trigger or activation signaling to a terminal through the transceiver, wherein the first reference signal trigger or activation signaling is used for indicating the terminal to receive a first reference signal;

transmitting a first reference signal through the transceiver according to the resource configuration information of the first reference signal; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.

50. A terminal, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is used for reading the program in the memory and executing:

receiving, by the transceiver, a first reference signal trigger or activation signaling sent by a base station, where the first reference signal trigger or activation signaling is used to instruct the terminal to receive a first reference signal according to resource configuration information of the first reference signal;

receiving, by the transceiver, a first reference signal according to the first reference signal trigger or activation signaling; the initial sending time unit of the first reference signal is determined according to an initial sending time unit of a second reference signal associated with the first reference signal, and the second reference signal is a downlink reference signal.