CN117528667A

CN117528667A - Method and device for sending reference signal

Info

Publication number: CN117528667A
Application number: CN202210894195.3A
Authority: CN
Inventors: 王雷; 周锐; 许萌; 曾二林
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2024-02-06

Abstract

The embodiment of the application provides a method and a device for sending a reference signal, wherein the method for sending the reference signal can be applied to a terminal and comprises the following steps: receiving activation indication information sent by a base station, and determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information; and sending an uplink reference signal to the target candidate cell. According to the method and the device for sending the reference signal, the terminal sends the uplink reference signal to the target candidate cell, the terminal does not need to send the uplink reference signal to all candidate cells, unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirements of the terminal are reduced.

Description

Method and device for sending reference signal

Technical Field

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

Background

In order to support functions such as mobility enhancement, the terminal may support a fast cell change mechanism based on the L1/L2 command in subsequent evolution. For the current serving cell of the terminal, a higher layer may pre-configure a series of candidate cells to be changed for the terminal, and the terminal may measure the uplink timing advance of the terminal in advance by sending an uplink reference signal to the candidate cells. After receiving the L1/L2 cell change command, the terminal can quickly access the target cell based on the acquired timing advance.

Considering subsequent mobility enhancements to support L1/L2 command based cell change, for a certain serving cell of a terminal, if many candidate cells are configured for the terminal, the base station may require the terminal to send an uplink reference signal for each candidate cell for the candidate cell to measure in advance and obtain the timing advance of the terminal in that cell, but this also increases the capability requirements for the terminal.

Disclosure of Invention

Aiming at the problems existing in the prior art, the embodiment of the application provides a method and a device for sending a reference signal.

In a first aspect, an embodiment of the present application provides a method for sending a reference signal, which is applied to a terminal, and includes:

receiving activation indication information sent by a base station, and determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information;

and sending an uplink reference signal to the target candidate cell.

Optionally, the activation indication information includes any one or a combination of the following:

a cell identifier corresponding to the target candidate cell;

the base station hopes the terminal to send the mapping relation of the uplink reference signal in all the current candidate cells.

Optionally, the receiving the activation indication information sent by the base station, determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information includes:

And receiving one activation indication message sent by the base station, and determining at least one target candidate cell in all preconfigured candidate cells based on the one activation indication message.

receiving a plurality of activation indication information sent by the base station successively, and determining at least one target candidate cell in all preconfigured candidate cells based on the plurality of activation indication information; wherein the set of candidate cells determined by the activation instruction information transmitted later is a subset of the set of candidate cells determined by the activation instruction information transmitted earlier.

Optionally, before the receiving the activation indication information sent by the base station, the method further includes:

and receiving configuration information which is sent by the base station and corresponds to all the preconfigured candidate cells one by one, wherein the configuration information is used for sending uplink reference signals.

Optionally, the configuration information includes basic configuration information and/or uplink reference signal configuration information.

Optionally, the base configuration information includes any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

The uplink reference signal configuration information includes any one or a combination of the following: the method comprises the steps of uplink reference signal identification, frequency domain information corresponding to the uplink reference signal and time domain information corresponding to the uplink reference signal.

Optionally, the time domain information corresponding to the uplink reference signal includes time domain window configuration information of the uplink reference signal;

the time domain window configuration information of the uplink reference signal comprises any one or a combination of the following:

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Optionally, the activation indication information is carried by a first message, the first message including: a radio resource control RRC message, a control unit MAC CE of a medium access control layer or downlink control information DCI.

In a second aspect, an embodiment of the present application provides a method for sending a reference signal, which is applied to a base station, and includes:

and sending activation indication information to the terminal, wherein the activation indication information is used for determining at least one target candidate cell in all preconfigured candidate cells, and the target candidate cell is a target cell for sending uplink reference signals by the terminal.

A cell identifier corresponding to the target candidate cell;

Optionally, the sending the activation indication information to the terminal includes:

and sending an activation indication message to the terminal.

sequentially sending a plurality of activation indication information to the terminal; wherein the set of candidate cells determined by the activation instruction information transmitted later is a subset of the set of candidate cells determined by the activation instruction information transmitted earlier.

Optionally, before sending the activation indication information to the terminal, the method further includes:

and sending configuration information corresponding to all the preconfigured candidate cells one by one to the terminal, wherein the configuration information is used for sending uplink reference signals.

Optionally, the configuration information includes cell configuration information and/or uplink reference signal configuration information.

Optionally, the cell configuration information includes any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

In a third aspect, embodiments of the present application further provide a terminal, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the method for transmitting a reference signal as described in the first aspect.

In a fourth aspect, embodiments of the present application further provide a base station, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the method for transmitting a reference signal as described in the second aspect.

In a fifth aspect, an embodiment of the present application further provides a transmitting device of a reference signal, which is applied to a terminal, and includes:

a first receiving unit, configured to receive activation indication information sent by a base station, and determine at least one target candidate cell from all preconfigured candidate cells based on the activation indication information;

and the first sending unit is used for sending the uplink reference signal to the target candidate cell.

In a sixth aspect, an embodiment of the present application further provides a transmitting device of a reference signal, which is applied to a base station, including:

and the second sending unit is used for sending activation indication information to the terminal, wherein the activation indication information is used for determining at least one target candidate cell in all preconfigured candidate cells, and the target candidate cell is a target cell for sending uplink reference signals by the terminal.

In a seventh aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the method for transmitting a reference signal as described in the first aspect or the method for transmitting a reference signal as described in the second aspect.

According to the method and the device for sending the reference signal, the terminal determines at least one target candidate cell in all preconfigured candidate cells based on the activation indication information, sends the uplink reference signal to the target candidate cell, and the terminal does not need to send the uplink reference signal to all candidate cells, so that unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirements of the terminal are reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is one of flow diagrams of a reference signal transmission method provided in an embodiment of the present application;

FIG. 2 is a second flowchart of a method for transmitting a reference signal according to an embodiment of the present disclosure;

fig. 3 is one of schematic structural diagrams of a transmitting device of a reference signal according to an embodiment of the present application;

Fig. 4 is a second schematic structural diagram of a reference signal transmitting apparatus according to an embodiment of the present disclosure;

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

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

Detailed Description

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device (e.g., UE) according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connection, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terminal acquires the downlink timing information about the current cell by reading the synchronization information block SSB, and when the terminal has uplink data transmission or the terminal detects uplink step-out, the terminal triggers random access to acquire the latest timing advance information. The timing advance acquired by the terminal is used for helping the terminal to complete uplink synchronization so as to perform reliable uplink data transmission. The terminal transmits an uplink signal based on the previously acquired downlink timing advance when transmitting the uplink signal based on the acquired timing advance information.

In the initial access process, the terminal firstly transmits a random access preamble to the base station, and the base station determines timing advance information required by the terminal for subsequently transmitting uplink signals by measuring the random access preamble transmitted by the terminal and transmits the timing advance information to the terminal in a random access response message. In the connected state, the terminal may be configured to periodically transmit an uplink reference signal for the base station to make measurements of timing advance information. Or, when the terminal performs uplink traffic transmission, the base station may perform timing advance measurement by using an uplink signal sent by the terminal on a traffic channel.

In the L1/L2 command based cell change mechanism, the candidate cells are a series of cells that are pre-configured to the terminal at the network side and that are likely to perform the change. The measurement reporting capability of the terminal is challenged if the terminal is required to perform measurements and report on all candidate cells.

In order to reduce the requirement on the capability of a terminal to send uplink reference signals in a mobile scene based on an L1/L2 command, the embodiment of the application provides a reference signal sending method, the terminal receives activation indication information sent by a base station, the terminal determines an activation candidate cell set needing to send the uplink reference signals in all candidate cells according to the activation indication information, and the terminal sends the uplink reference signals in the activation candidate cell set according to the received activation indication information.

Fig. 1 is one of flow diagrams of a reference signal transmission method provided in an embodiment of the present application, and referring to fig. 1, the reference signal transmission method provided in an embodiment of the present application may be applied to a terminal, and includes:

Step 110, receiving activation indication information sent by a base station, and determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information;

specifically, the terminal may also be called a terminal device, where the candidate cell refers to a next cell to which the terminal may access, and the terminal may obtain, through pre-configuration, information (such as a cell identifier, etc.) of a candidate cell corresponding to a current serving cell. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

The target candidate cell is a cell in which the base station desires the terminal to transmit an uplink reference signal among all the candidate cells.

And step 120, transmitting an uplink reference signal to the target candidate cell.

For example, the current serving cell is cell0, and all candidate cells corresponding to cell0 include cell1, cell2, cell3 and cell4, and the target candidate cells cell1 and cell2 are determined by the activation indication information, and uplink reference signals are respectively sent to cell1 and cell 2.

According to the method for sending the reference signal, the terminal determines at least one target candidate cell in all preconfigured candidate cells based on the activation indication information, sends the uplink reference signal to the target candidate cell, and the terminal does not need to send the uplink reference signal to all candidate cells, so that unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is reduced, and capability requirements of the terminal are reduced.

a cell identifier corresponding to the target candidate cell;

Specifically, the cell identifier corresponding to the target candidate cell is used for identifying the cell identity of the target candidate cell. Illustratively, the Cell Identifier may be a global Cell Identifier (NR Cell Global Identifier, NCGI) or an NR Cell Identifier (NCI), where the NCGI is composed of a public land mobile network Identifier (Public Land Mobile Network ID, PLMN ID) to which the Cell belongs and an NR Cell Identifier, and the NR Cell Identifier is composed of a base station Identifier (gNB Identifier, gNB ID) and a Cell number (Cell ID), where the gNB ID is used to identify one gNB in one PLMN. Optionally, the terminal may sequentially receive the cell identifier corresponding to each target candidate cell, or may receive a cell identifier list formed by the cell identifiers corresponding to all the target candidate cells, where the cell identifier list is an identifier list of all the current candidate cells that the base station considers that the base station needs to send an uplink reference signal (the target candidate cell).

It should be understood that the foregoing is illustrative for facilitating understanding of embodiments of the present application, and embodiments of the present application do not limit the type of cell identifier and how to issue the cell identifier.

The mapping relation of the base station hope of the terminal to send the uplink reference signal in all the current candidate cells means that the terminal can determine whether to send the uplink reference signal to the candidate cells or not through the mapping relation. Illustratively, the current list of all candidate cells is { cell1, cell2, cell3, cell4}, the mapping relationship is {0101}, each element (celli, i represents cell number 1, 2, 3 or 4) in the list of all candidate cells corresponds to element (0 or 1) in the mapping relationship one by one, 0 represents that no uplink reference signal is sent to the cell, 1 represents that an uplink reference signal is sent to the cell, and the mapping relationship in this embodiment represents that: the uplink reference signals are not transmitted to cell1 and cell3, and are transmitted to cell2 and cell 4. It should be understood that, the foregoing is an example for facilitating understanding of the embodiments of the present application, and the mapping relationship may also take other forms, as long as identification of the target candidate cell can be achieved.

Specifically, the terminal receives the activation instruction information sent by the base station once, and determines the target candidate cell based on the received activation instruction information. It should be understood that, for example, one activation indication information may carry two content of a cell identifier and a mapping relationship corresponding to the target candidate cell.

The receiving the activation indication information sent by the base station, determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information comprises the following steps:

optionally, receiving a plurality of activation indication information sent by the base station successively, and determining at least one target candidate cell in all preconfigured candidate cells based on the plurality of activation indication information; wherein the set of candidate cells determined by the activation instruction information transmitted later is a subset of the set of candidate cells determined by the activation instruction information transmitted earlier.

Specifically, the terminal receives activation indication information sent by the base station for multiple times, and determines a target candidate cell according to the sequence of sending the activation indication information by the base station and the content indicated by each activation indication information. For example, all candidate cells may include { cell1, cell2, cell3, cell4}, where the base station sends cell identifiers corresponding to cell1, cell2, and cell3 for the first time, and the terminal determines that the first candidate cell set is { cell1, cell2, cell3}; the base station sends cell identifiers corresponding to the cell1 and the cell2 for the second time, and the terminal determines that the second candidate cell set is { cell1, cell2}; and the base station sends the cell identification corresponding to the cell1 for the third time, and the terminal determines the target candidate cell as the cell1.

Optionally, after receiving the activation indication information sent by the base station each time, the terminal may send an uplink reference signal to a candidate cell indicated by the activation indication information received each time; the terminal may also send an uplink reference signal to the target candidate cell determined based on the plurality of activation instruction information after receiving the activation instruction information sent by the base station for the last time. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

Optionally, the base station and the terminal may configure the number of transmission of the activation indication information based on a pre-configuration (such as protocol specification, parameter setting), system information or dedicated signaling, etc., for example, the pre-configuration number is 2, and after receiving 2 activation indication information, the terminal determines a target candidate cell and transmits an uplink reference signal to the target candidate cell; the terminal may also perform cell measurement through a preset time, if the terminal does not receive new activation indication information within the preset time after receiving the current activation indication information, the terminal may determine that the current activation indication information is the last activation indication information, and send an uplink reference signal to the target candidate cell. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

Alternatively, the activation indication information received for the first time may be carried by the control unit MAC CE of the medium access control layer, and the activation indication information received for the second time may be carried by the downlink control information DCI. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

According to the method for transmitting the reference signal, the target candidate cell can be determined through the plurality of pieces of activation indication information which are transmitted successively, the method can be suitable for the situation that the terminal change is large, for example, the situation that the movement track of the terminal change is large, the range of the target candidate cell can be sequentially narrowed through the plurality of pieces of activation indication information, and therefore the availability of the transmitted uplink reference signal is improved.

Specifically, the uplink reference signal may be a demodulation reference signal (DeModulation Reference Signal, DMRS), a phase tracking reference signal (Phase Tracking Reference Signal, PT-RS), a channel sounding reference signal (Sounding Reference Signal, SRS) or a synchronization signal and PBCH block (Synchronization Signal and PBCH block, SSB), etc. DMRS is used for channel estimation to demodulate the corresponding physical channel, PT-RS is used for phase noise tracking and compensation, SRS is used for uplink channel measurement, time-frequency synchronization, beam management, etc., and SSB is used for RSRP measurement and SINR measurement. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

The configuration information is used for the terminal to send the uplink reference signal. The configuration information may include a transmitting device of a reference signal, a receiving device of a reference signal, or a transmission mode of a reference signal, for example, when an SRS is transmitted on a given time-frequency domain resource, for example, a starting position of the SRS resource on a slot time domain, a number of symbols occupied by the SRS resource on the time domain, a starting position of the SRS resource on the frequency domain, a position of the SRS resource on the frequency domain, an identification of a target cell of SRS transmission, or the like may be configured. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

Illustratively, the basic configuration information may include a basic configuration such as an identification of a transmitting device (an identification of a terminal), an identification of a receiving device (a cell identification of a target candidate cell), a transmission mode (uplink or downlink), a carrier frequency or bandwidth, etc., and the uplink reference signal configuration information is a configuration required for transmitting an uplink reference signal, and the basic configuration information may be understood as configuration information other than the uplink reference signal configuration information.

optionally, the uplink reference signal configuration information includes any one or a combination of the following: the method comprises the steps of uplink reference signal identification, frequency domain information corresponding to the uplink reference signal and time domain information corresponding to the uplink reference signal.

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Alternatively, the start time may be carried in the activate command and the end time may be carried in the end command.

For the case of only containing an activation command, when the terminal receives the activation command, the terminal starts to configure the reference signal and sends the reference signal; for the case that a combination of an activation command and a start time is included, a reference signal is transmitted based on the indicated start time. For the end command and the end time, reference is made to an activation command and an activation time, which are not described in detail herein.

Fig. 2 is a second flowchart of a reference signal transmission method provided in an embodiment of the present application, and referring to fig. 2, the reference signal transmission method provided in an embodiment of the present application may be applied to a base station, and includes:

step 210, sending activation indication information to a terminal, where the activation indication information is used to determine at least one target candidate cell from all preconfigured candidate cells, where the target candidate cell is a target cell of the terminal sending an uplink reference signal.

Specifically, the activation indication information is used by the base station to indicate the target candidate cell to the terminal. All the candidate cells preconfigured may be preconfigured for the base station for the terminal. For example, the base station may pre-configure, for each cell, a candidate cell to be switched corresponding to the cell, and after the terminal accesses the current serving cell, the base station issues, for the terminal, all candidate cells corresponding to the current serving cell. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way.

The target candidate cell is a candidate cell in which the base station desires the terminal to transmit an uplink measurement signal among all the candidate cells. The base station may determine the target candidate cell based on information such as a location of the terminal, an activity trajectory, a movement speed, or signal quality of the candidate cell. For example, when the base station determines that the terminal moves to the east, the base station determines that cell1 is the target candidate cell based on the moving direction of the terminal. It should be understood that the foregoing is an example for facilitating understanding of the embodiments of the present application, and the embodiments of the present application do not limit how the base station determines the target candidate cell.

According to the method for sending the reference signal, the activation indication information is sent to the terminal, and is used for determining at least one target candidate cell in all preconfigured candidate cells, the terminal does not need to send uplink reference signals to all the candidate cells, unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirements of the terminal are reduced.

a cell identifier corresponding to the target candidate cell;

For the description of the cell identifier corresponding to the target candidate cell and the mapping relation of the base station hope that the terminal sends the uplink reference signal in all the current candidate cells, reference is made to the description above, and details are not repeated here.

and sending an activation indication message to the terminal.

Specifically, sending an activation instruction message to the terminal means that the base station sends an activation instruction message to the terminal once.

For example, the activation instruction information sent by the base station for the first time can determine the first candidate cell set { cell1, cell2, cell3}, the activation instruction information sent by the base station for the second time can determine the second candidate cell set { cell2, cell3}, and the second candidate cell set determined by the activation instruction information sent later is a subset of the first candidate cell set determined by the activation instruction information sent earlier. The target candidate cells are cell2 and cell3.

The activation indication information sent by the base station in sequence can be determined according to factors such as the motion trail of the terminal. In one embodiment, according to a motion trail of a terminal, a base station determines candidate cells as cell1, cell2 and cell3, and sends activation indication information to the terminal for the first time; after the terminal moves for a period of time, the base station can determine that the cell2 and the cell3 are more likely to become the next accessed cell in the cell1, the cell2 and the cell3 according to the updated movement track of the terminal, and send the activation indication information to the terminal for the second time. It should be understood that the foregoing is an example for facilitating understanding of the embodiments of the present application, and the embodiments of the present application do not limit how the base station determines the activation indication information that is sent multiple times.

According to the reference signal sending method, the plurality of pieces of activation indication information are sent to the terminal in sequence, the range of the candidate cell determined by the plurality of pieces of activation indication information which are sent in sequence is sequentially reduced, and the requirement on the measurement capability of the terminal is reduced.

For the description of the uplink reference signal and the configuration information, reference is made to the above description, and the description is omitted here.

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For the description of the cell configuration information and the uplink reference signal configuration information, reference is made to the above description, and details are not repeated here.

The following describes a method for transmitting a reference signal provided in the embodiments of the present application in conjunction with a plurality of embodiments.

Example 1:

step 1, in order to support mobility enhancement function based on L1/L2 command, for a certain service cell servingcell1 of the terminal, the base station pre-configures a series of candidate cells that may be changed to for the service cell, for example { candidatecell1, candidatecell2, candidatecell3}. When the terminal detects that the signal quality of a certain candidate cell is better than that of the current cell, the terminal reports the measurement result to the base station, and the base station instructs the terminal to change the cell through the L1/L2 command according to the measurement result of the candidate cell reported by the terminal. In order to support fast access to the candidate cell, the terminal needs to send an uplink reference signal to the candidate cell in the current cell, so that the candidate cell can measure and acquire the timing advance required by uplink synchronization in advance, and then send the timing advance to the terminal.

Step 2, for the terminal to send uplink reference signals to the candidate cells, the base station first sends configuration information to the terminal through RRC messages, where the configuration information may be a plaintext message or an RRC Container (may be carried by an RRC message), and for example, the configuration information may optionally include:

for candidate cell candidatecell1:

identification index1 of candidate cell candidatecell 1;

carrier frequency and carrier bandwidth of candidate cell candidatecell1, etc.;

the uplink reference signal identifier which can be used on the candidate cell candidatecell1 is, for example, SRSindex1 or a newly defined reference signal RS1;

frequency domain resources, time domain periods and the like of an uplink reference signal SRSindex1 or RS1 are sent;

a time domain window configuration of the uplink reference signal SRSindex1 or RS1 is transmitted.

The form of the time domain window configuration for transmitting the uplink reference signal SRSindex1 or RS1 may include, but is not limited to, the following:

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Wherein, optionally, the activation command may carry a start time, and the end command may carry an end time.

For candidate cell candidatecell2:

identification index2 of candidate cell candidatecell 2;

Carrier frequency and carrier bandwidth of candidate cell candidatecell2, etc.;

the uplink reference signal identifier that can be used on candidate cell candidatecell2 is, for example, SRSindex2 or newly defined reference signal RS2;

frequency domain resources, time domain periods and the like of an uplink reference signal SRSindex2 or RS2 are sent;

a time domain window configuration of the uplink reference signal SRSindex2 or RS2 is transmitted.

The form of the time domain window configuration for transmitting the uplink reference signal SRSindex2 or RS2 may include, but is not limited to, the following:

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For candidate cell candidatecell3:

identification index3 of candidate cell candidatecell 3;

carrier frequency and carrier bandwidth of candidate cell candidatecell3, etc.;

the uplink reference signal identifier that can be used on candidate cell candidatecell3 is, for example, SRSindex3 or newly defined reference signal RS3;

frequency domain resources, time domain periods and the like of an uplink reference signal SRSindex3 or RS3 are sent;

a time domain window configuration of the uplink reference signal SRSindex3 or RS3 is transmitted.

The form of the time domain window configuration for transmitting the uplink reference signal SRSindex3 or RS3 may include, but is not limited to, the following:

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Step 3, the step depends on the implementation of the base station, for example, the base station decides that the terminal does not need to send uplink reference signals to all candidate cells according to the deployment information of the cell site or the congestion situation of the candidate cells.

For example, the base station transmits activation indication information to the terminal through an RRC message or MAC CE, such as:

the current subset of target candidate cells indicated by the cell identity of the target candidate cell, e.g., { index1 index2}.

The terminal acquires the associated uplink reference signal configuration from the configuration information of candidatecell1 and candidatecell2, and transmits corresponding uplink reference signals on candidatecell1 and candidatecell 2.

Example 2:

Step 2, for the terminal to send uplink reference signals to the candidate cells, the base station first sends candidate cell configuration information to the terminal through RRC messages, which may be a plaintext message or an RRC container (carried by the RRC message), for example, the candidate cell configuration information may optionally include:

for candidate cell candidatecell1:

identification index1 of candidate cell candidatecell 1;

carrier frequency and carrier bandwidth of candidate cell candidatecell1, etc.;

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For candidate cell candidatecell2:

identification index2 of candidate cell candidatecell 2;

Carrier frequency and carrier bandwidth of candidate cell candidatecell2, etc.;

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For candidate cell candidatecell3:

identification index3 of candidate cell candidatecell 3;

carrier frequency and carrier bandwidth of candidate cell candidatecell3, etc.;

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Step 3, depending on the base station implementation, for example, the base station decides that the terminal does not need to send uplink reference signals to all candidate cells according to the cell site deployment information or the congestion situation of the candidate cells.

For example, the base station transmits candidate cell activation indication information to the terminal through RRC message, MAC CE or DCI, such as:

the subset of current target candidate cells indicated by the mapping relationship is, for example, 110. Then, according to the ascending order of the candidate cell identifiers, the 1 is set to represent that the terminal needs to send uplink reference signals to the corresponding candidate cell. And the terminal transmits corresponding uplink reference signals on uplink reference signal configurations associated with the candidatecell1 and the candidatecell 2.

Example 3:

step 1, in order to support mobility enhancement functions based on L1/L2 commands, for a certain serving cell servingcell1 of the terminal, the base station pre-configures a series of candidate cells that may be changed to for the cell, for example { candidatecell1, candidatecell2, candidatecell3, candidatecell4, candidatecell5, candidatecell6, candidatecell7, candidatecell8}. When the terminal detects that the signal quality of a certain candidate cell is better than that of the current cell, the terminal reports the measurement result to the base station, and the base station instructs the terminal to change the cell through the L1/L2 command according to the measurement result of the candidate cell reported by the terminal. In order to support fast access to the candidate cell, the terminal needs to send an uplink reference signal to the candidate cell in the current cell, so that the candidate cell can measure and acquire the timing advance required by uplink synchronization in advance, and then send the timing advance to the terminal.

Step 2, for the terminal to send uplink reference signals to the candidate cells, the base station sends the candidate cell configuration information to the terminal through RRC message, which may be a plaintext message or RRC container, for example, the candidate cell configuration information optionally includes:

for candidate cell candidatecell1:

identification index1 of candidate cell candidatecell 1;

carrier frequency and carrier bandwidth of candidate cell candidatecell1, etc.;

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For candidate cell candidatecell2:

identification index2 of candidate cell candidatecell 2;

Carrier frequency and carrier bandwidth of candidate cell candidatecell2, etc.;

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

For candidate cell candidatecell8:

identification index8 of candidate cell candidatecell 8;

carrier frequency and carrier bandwidth of candidate cell candidatecell8, etc.;

the uplink reference signal identifier that can be used on candidate cell candidatecell8 is, for example, SRSindex8 or newly defined reference signal RS8;

frequency domain resources, time domain periods and the like of an uplink reference signal SRSindex8 or RS8 are sent;

a time domain window configuration of the uplink reference signal SRSindex8 or RS8 is transmitted.

The form of the time domain window configuration for transmitting the uplink reference signal SRSindex8 or RS8 may include, but is not limited to, the following:

a start time;

an end time;

a start time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

Description of configuration information of candidatecell3, candidatecell4, candidatecell5, candidatecell6, and candidatecell7 is omitted, and reference may be made to configuration information of candidatecell1, candidatecell2, and candidatecell 8.

For example, the base station first transmits the first candidate cell activation indication information to the terminal through an RRC message, MAC CE, or DCI.

For example by RRC message or MAC CE:

a first set of candidate cells indicated by the candidate cell identity, e.g., { index1, index3, index4, index8}.

For example, by RRC message, MAC CE or DCI transmission:

a first set of candidate cells indicated by the mapping relationship, e.g., {10110001}.

And 4, the base station transmits second activation indication information to the terminal, and the terminal determines an uplink reference signal which is required to be transmitted finally by receiving the second activation indication information.

The second activation indication information content sent to the terminal through the RRC message or the MAC CE is:

a second set of candidate cells indicated by the candidate cell identity, where the second set of candidate cells is a subset of the candidate cells (first set of candidate cells) determined via the first activation indication information, e.g., { index3, index4}. The candidate cells in the second candidate cell set are target candidate cells.

The second activation indication information content sent to the terminal through RRC message, MAC CE or DCI is:

a second set of candidate cells indicated by the mapping relationship, where the second set of candidate cells is a subset of the candidate cells (first set of candidate cells) determined via the first activation indication information, e.g., {0110}. The candidate cells in the second candidate cell set are target candidate cells.

And indicating that the target candidate cells which finally need to send the uplink reference signals by the terminal are candidatecell3 and candidatecell4, and sending corresponding uplink reference signals on uplink reference signal configuration associated with candidatecell3 and candidatecell4 by the terminal.

Fig. 3 is one of schematic structural diagrams of a reference signal transmitting apparatus provided in an embodiment of the present application, and referring to fig. 3, the reference signal transmitting apparatus provided in an embodiment of the present application may be applied to a terminal, and includes: a first receiving unit 310 and a first transmitting unit 320;

a first receiving unit 310, configured to receive activation indication information sent by a base station, and determine at least one target candidate cell from all preconfigured candidate cells based on the activation indication information;

specifically, the candidate cell refers to a next cell to which the terminal may access, and the terminal may obtain, through pre-configuration, information (such as a cell identifier, etc.) of the candidate cell corresponding to the current serving cell, for example, the base station may pre-configure, for each serving cell, the candidate cell to be switched corresponding to the serving cell, and after the terminal accesses the current serving cell, the base station issues all candidate cells corresponding to the current serving cell to the terminal. It should be understood that the foregoing is illustrative of the embodiments of the present application and is not to be construed as limiting the present application in any way. The target candidate cell is a cell in which the base station desires the terminal to transmit an uplink reference signal among all the candidate cells.

A first sending unit 320, configured to send an uplink reference signal to the target candidate cell.

For example, the current serving cell is cell0, all candidate cells corresponding to cell0 include cell1, cell2, cell3 and cell4, the target candidate cells cell1 and cell2 are determined through the activation indication information, and the terminal sends uplink reference signals to cell1 and cell2 through the first sending unit 320 respectively.

According to the reference signal sending device provided by the embodiment of the application, the terminal determines at least one target candidate cell in all preconfigured candidate cells based on the activation indication information, and sends the uplink reference signal to the target candidate cell, so that the terminal does not need to send the uplink reference signal to all candidate cells, unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is reduced, and capability requirements on the terminal are reduced.

The method and the device provided in each embodiment of the present application are based on the same application conception, and because the principles of solving the problems by the method and the device are similar, the method and the device for sending the reference signal provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method for sending the reference signal applied to the terminal, and can achieve the same technical effects, so that the implementation of the device and the method can be referred to each other, and the repetition is omitted.

Fig. 4 is a second schematic structural diagram of a reference signal transmitting apparatus provided in an embodiment of the present application, and referring to fig. 4, the reference signal transmitting apparatus provided in an embodiment of the present application is applied to a base station, and includes: a second transmitting unit 410;

a second sending unit 410, configured to send activation indication information to a terminal, where the activation indication information is used to determine at least one target candidate cell from all preconfigured candidate cells, where the target candidate cell is a target cell for sending an uplink reference signal by the terminal.

The device for sending the reference signal provided by the embodiment of the application sends the activation indication information to the terminal, wherein the activation indication information is used for determining at least one target candidate cell in all preconfigured candidate cells, and the terminal does not need to send uplink reference signals to all the candidate cells, so that unnecessary reference signal sending is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirements on the terminal are reduced.

The method and the device provided in each embodiment of the present application are based on the same application conception, and because the principles of solving the problems by the method and the device are similar, the method and the device for sending the reference signal provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method for sending the reference signal applied to the base station, and can achieve the same technical effects, so that the implementation of the device and the method can be referred to each other, and the repetition is omitted.

Fig. 5 is a schematic structural diagram of a terminal provided in an embodiment of the present application, and as shown in fig. 5, the terminal includes a memory 520, a transceiver 500, and a processor 510; wherein processor 510 and memory 520 may also be physically separate.

A memory 520 for storing a computer program; a transceiver 500 for transceiving data under the control of a processor 510.

In particular, transceiver 500 is used to receive and transmit data under the control of processor 510.

Wherein in fig. 5, bus interface 540 may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 510 and various circuits of memory represented by memory 520, coupled together. The bus interface 540 may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. Transceiver 500 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. For different terminals, a user interface 530 may also be included, the user interface 530 may also be an interface capable of interfacing with an inscribed desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 510 in performing operations.

Alternatively, the processor 510 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor 510 is configured to execute operations corresponding to any of the methods for transmitting a reference signal applied to a terminal provided in the embodiments of the present application according to the obtained executable instructions by calling a computer program stored in the memory 520, for example:

and sending an uplink reference signal to the target candidate cell.

The terminal provided by the embodiment of the application determines at least one target candidate cell in all preconfigured candidate cells based on the activation indication information, and transmits the uplink reference signal to the target candidate cell, so that the terminal does not need to transmit the uplink reference signal to all candidate cells, unnecessary reference signal transmission is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirement on the terminal is reduced.

a cell identifier corresponding to the target candidate cell;

Specifically, the terminal receives activation indication information sent by the base station for multiple times, and determines a target candidate cell according to the sequence of sending the activation indication information by the base station and the content indicated by each activation indication information. For example, all candidate cells include { cell1, cell2, cell3, cell4}, the base station transmits cell identifiers corresponding to cell1, cell2 and cell3 for the first time, and the terminal determines that the first candidate cell set is { cell1, cell2, cell3}; the base station sends cell identifiers corresponding to the cell1 and the cell2 for the second time, and the terminal determines that the second candidate cell set is { cell1, cell2}; and the base station sends the cell identification corresponding to the cell1 for the third time, and the terminal determines the target candidate cell as the cell1.

The terminal provided by the embodiment of the invention can determine the target candidate cell through the plurality of pieces of activation indication information which are sequentially transmitted, and can be suitable for the condition that the terminal has large change, such as the condition that the movement track of the terminal has large change, the range of the target candidate cell can be sequentially reduced through the plurality of pieces of activation indication information, so that the availability of the transmitted uplink reference signal is improved.

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

Ending the command.

The terminal provided by the embodiment of the application determines at least one target candidate cell in all preconfigured candidate cells based on the activation indication information, and transmits the uplink reference signal to the target candidate cell, so that the terminal does not need to transmit the uplink reference signal to all candidate cells, unnecessary reference signal transmission is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirement on the terminal is reduced. It should be noted that, the above terminal provided in this embodiment of the present application can implement all the method steps implemented in the embodiment of the method for sending the reference signal applied to the terminal, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the embodiment of the method are omitted herein.

Fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application, and as shown in fig. 6, the base station includes a memory 620, a transceiver 600 and a processor 610; wherein the processor 610 and the memory 620 may also be physically separate.

A memory 620 for storing a computer program; a transceiver 600 for transceiving data under the control of a processor 610.

In particular, transceiver 600 is used to receive and transmit data under the control of processor 610.

Wherein in fig. 6, bus interface 630 may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 610 and various circuits of memory represented by memory 620, coupled together. The bus interface 630 may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. Transceiver 600 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc.

The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 in performing operations.

Alternatively, the processor 610 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multicore architecture.

The processor 610 is configured to execute any of the operations corresponding to the method for transmitting a reference signal applied to a base station according to any of the embodiments of the present application according to the obtained executable instructions by calling a computer program stored in the memory 620, for example:

The base station provided by the embodiment of the application transmits the activation indication information to the terminal, wherein the activation indication information is used for determining at least one target candidate cell in all preconfigured candidate cells, and the terminal does not need to transmit uplink reference signals to all candidate cells, so that unnecessary reference signal transmission is avoided, resource waste is avoided, power consumption of the terminal is saved, and capability requirement on the terminal is reduced.

a cell identifier corresponding to the target candidate cell;

and sending an activation indication message to the terminal.

According to the base station provided by the embodiment of the application, the plurality of activation indication information is sequentially sent to the terminal, and the candidate cell range determined by the sequentially sent plurality of activation indication information is sequentially reduced, so that the requirement on the measurement capability of the terminal is reduced.

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

It should be noted that, the above base station provided in this embodiment of the present application can implement all the method steps implemented in the above embodiment of the method for sending a reference signal applied to a base station, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to execute the method for sending a reference signal provided in each embodiment, where the method may be applied to a terminal, and the method includes: receiving activation indication information sent by a base station, and determining at least one target candidate cell in all preconfigured candidate cells based on the activation indication information; and sending an uplink reference signal to the target candidate cell.

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to execute the method for sending a reference signal provided in each embodiment, where the method may be applied to a base station, and the method includes: and sending activation indication information to the terminal, wherein the activation indication information is used for determining at least one target candidate cell in all preconfigured candidate cells, and the target candidate cell is a target cell for sending uplink reference signals by the terminal.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable 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 processor-executable instructions may also be stored in a processor-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 processor-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 processor-executable 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.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for transmitting a reference signal, which is applied to a terminal, includes:

and sending an uplink reference signal to the target candidate cell.

2. The method for transmitting a reference signal according to claim 1, wherein the activation indication information includes any one or a combination of the following:

a cell identifier corresponding to the target candidate cell;

3. The method according to claim 1, wherein the receiving the activation indication information transmitted by the base station, determining at least one target candidate cell among all the pre-configured candidate cells based on the activation indication information comprises:

4. The method according to claim 1, wherein the receiving the activation indication information transmitted by the base station, determining at least one target candidate cell among all the pre-configured candidate cells based on the activation indication information comprises:

5. The method for transmitting a reference signal according to any one of claims 1 to 4, further comprising, before the receiving the activation instruction information transmitted by the base station:

6. The method according to claim 5, wherein the configuration information includes basic configuration information and/or uplink reference signal configuration information.

7. The method for transmitting a reference signal according to claim 6, wherein the basic configuration information includes any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

8. The method for transmitting a reference signal according to claim 7, wherein the time domain information corresponding to the uplink reference signal includes time domain window configuration information of the uplink reference signal;

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

9. The method for transmitting a reference signal according to any one of claims 1 to 4, wherein the activation indication information is carried by a first message, the first message comprising: a radio resource control RRC message, a control unit MAC CE of a medium access control layer or downlink control information DCI.

10. A method for transmitting a reference signal, which is applied to a base station, includes:

11. The method for transmitting a reference signal according to claim 10, wherein the activation indication information includes any one or a combination of the following:

A cell identifier corresponding to the target candidate cell;

12. The method for transmitting a reference signal according to claim 10, wherein the transmitting activation indication information to the terminal comprises:

and sending an activation indication message to the terminal.

13. The method for transmitting a reference signal according to claim 10, wherein the transmitting activation indication information to the terminal comprises:

14. The method for transmitting a reference signal according to any one of claims 10 to 13, further comprising, before the step of transmitting the activation instruction information to the terminal:

15. The method according to claim 14, wherein the configuration information includes cell configuration information and/or uplink reference signal configuration information.

16. The method for transmitting a reference signal according to claim 15, wherein the cell configuration information includes any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

17. The method for transmitting a reference signal according to claim 16, wherein the time domain information corresponding to the uplink reference signal includes time domain window configuration information of the uplink reference signal;

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

18. The method for transmitting a reference signal according to any one of claims 10 to 13, wherein the activation indication information is carried by a first message, the first message comprising: a radio resource control RRC message, a control unit MAC CE of a medium access control layer or downlink control information DCI.

19. A terminal comprising a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

and sending an uplink reference signal to the target candidate cell.

20. The terminal of claim 19, wherein the activation indication information includes any one or a combination of the following:

a cell identifier corresponding to the target candidate cell;

21. The terminal of claim 19, wherein the receiving activation indication information sent by the base station, determining at least one target candidate cell among all pre-configured candidate cells based on the activation indication information comprises:

22. The terminal of claim 19, wherein the receiving activation indication information sent by the base station, determining at least one target candidate cell among all pre-configured candidate cells based on the activation indication information comprises:

23. The terminal according to any of claims 19-22, wherein before receiving the activation indication information sent by the base station, the terminal further comprises:

24. The terminal according to claim 23, wherein the configuration information comprises basic configuration information and/or uplink reference signal configuration information.

25. The terminal of claim 24, wherein the basic configuration information comprises any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

26. The terminal of claim 25, wherein the time domain information corresponding to the uplink reference signal includes time domain window configuration information of the uplink reference signal;

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

27. The terminal according to any of the claims 19-22, characterized in that the activation indication information is carried by a first message comprising: a radio resource control RRC message, a control unit MAC CE of a medium access control layer or downlink control information DCI.

28. A base station comprising a memory, a transceiver, and a processor:

29. The base station according to claim 28, wherein the activation indication information comprises any one or a combination of the following:

a cell identifier corresponding to the target candidate cell;

30. The base station of claim 28, wherein the transmitting the activation indication information to the terminal comprises:

and sending an activation indication message to the terminal.

31. The base station of claim 28, wherein the transmitting the activation indication information to the terminal comprises:

32. The base station according to any of the claims 28-31, characterized in that before said sending the activation indication information to the terminal, it further comprises:

33. The base station according to claim 32, wherein the configuration information comprises cell configuration information and/or uplink reference signal configuration information.

34. The base station according to claim 33, wherein the cell configuration information comprises any one or a combination of the following: candidate cell identification, candidate cell carrier frequency and candidate cell carrier bandwidth;

35. The base station according to claim 34, wherein the time domain information corresponding to the uplink reference signal includes time domain window configuration information of the uplink reference signal;

a start time;

an end time;

duration of time;

the number of uplink reference signal transmissions;

activating a command;

ending the command.

36. The base station according to any of claims 28-31, wherein the activation indication information is carried by a first message comprising: a radio resource control RRC message, a control unit MAC CE of a medium access control layer or downlink control information DCI.

37. A reference signal transmitting apparatus, applied to a terminal, comprising:

38. A reference signal transmitting apparatus, applied to a base station, comprising:

39. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the transmission method of the reference signal according to any one of claims 1 to 9 or to perform the transmission method of the reference signal according to any one of claims 10 to 18.