WO2024067508A1

WO2024067508A1 - Cell synchronization method and apparatus, terminal, network side device and storage medium

Info

Publication number: WO2024067508A1
Application number: PCT/CN2023/121188
Authority: WO
Inventors: 黎建辉; 杨晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-29
Filing date: 2023-09-25
Publication date: 2024-04-04
Also published as: CN117858204A

Abstract

The present application relates to the technical field of communications, and discloses a cell synchronization method and apparatus, a terminal, a network side device and a storage medium. The cell synchronization method of embodiments of the present application comprises: a terminal sends a first signal to a first network side device, wherein the first signal is used for triggering the first network side device to send a target signal, and the first signal is a signal used for activating or waking up an energy saving cell, and the target signal comprises a reference signal or a synchronization signal; the terminal determines a target resource position of the target signal according to target configuration information; and at the target resource position, the terminal receives the target signal sent by the first network side device, wherein the target configuration information comprises at least one of the following: a time domain interval between the first signal and the target signal; and resource information of the target signal.

Description

Cell synchronization method, device, terminal, network side equipment and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed with the China Patent Office on September 29, 2022, with application number 202211203482.1 and title “Cell synchronization method, device, terminal, network side equipment and storage medium”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a cell synchronization method, device, terminal, network side equipment and storage medium.

Background technique

In a communication system, in order to achieve network energy saving, some cells may change the transmission period of the synchronization signal block (SSB), such as changing the transmission period of the synchronization signal block from a short period of 20ms to a long period greater than 20ms. If the terminal wants to synchronize with the cell, it can send a corresponding request to the cell. After receiving the request, the cell may change the transmission period of the synchronization signal block from a long period to a short period, such as from a long period greater than 20ms to a short period of 20ms. A worse case is that the cell has just sent a synchronization signal block before receiving the request, and it will take about 20ms to send the synchronization signal block again. That is to say, the terminal has just missed a synchronization signal block and needs to wait for about 20ms to detect the synchronization signal block sent again by the cell, and then use the synchronization signal block to complete automatic gain control (AGC) or time/frequency tracking (time/frequency tracking) and other operations.

That is to say, with the current method, the terminal needs to receive the synchronization signal block according to the transmission period of the synchronization signal block of the cell before it can synchronize with the cell, which may require a long waiting time.

Summary of the invention

The embodiments of the present application provide a cell synchronization method, apparatus, terminal, network-side equipment, and storage medium to perform cell synchronization on demand and improve flexibility.

In a first aspect, a cell synchronization method is provided, comprising:

The terminal sends a first signal to the first network side device, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The terminal determines the target resource location of the target signal according to the target configuration information;

The terminal receives the target signal sent by the first network side device at the target resource location;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

In a second aspect, a cell synchronization device is provided, including:

A first sending module, configured to send a first signal to a first network side device, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up an energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

A first determining module, configured to determine a target resource location of the target signal according to target configuration information;

A first receiving module, configured to receive the target signal sent by the first network side device at the target resource location;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

In a third aspect, a cell synchronization method is provided, including:

A first network side device receives a first signal sent by a terminal, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up an energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The first network side device sends the target signal at a target resource location.

In a fourth aspect, a cell synchronization device is provided, including:

A second receiving module, configured to receive a first signal sent by the terminal, wherein the first signal is used to trigger the first network side device to send a target signal, the first signal is used to activate or wake up a signal of the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The second sending module is used to send the target signal at the target resource location.

In a fifth aspect, a cell synchronization method is provided, including:

The second network side device sends target configuration information to the terminal, where the target configuration information is used to determine the target resource location of the target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends the first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal for activating or waking up the energy-saving cell, and where the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

In a sixth aspect, a cell synchronization device is provided, characterized in that it includes:

A third sending module, configured to send target configuration information to the terminal, where the target configuration information is used to determine a target resource location of a target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends a first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal for activating or waking up an energy-saving cell, and where the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

In a seventh aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In the eighth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented, or the steps of the method described in the fifth aspect are implemented.

In the ninth aspect, a communication system is provided, including: a terminal, a first network side device and a second network side device, the terminal can be used to execute the steps of the method described in the first aspect, the first network side device can be used to execute the steps of the method described in the third aspect, and the second network side device can be used to execute the steps of the method described in the fifth aspect.

In the tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented, or the steps of the method described in the fifth aspect are implemented.

In the eleventh aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect.

In an embodiment of the present application, the terminal sends a first signal to a first network side device, and the first signal is used to trigger the first network side device to send a target signal. The first signal is a signal for activating or waking up an energy-saving cell. The target signal may include a reference signal or a synchronization signal. The target configuration information includes resource information of the target signal and/or a time domain interval between the first signal and the target signal. After the terminal determines the target resource location of the target signal according to the target configuration information, it receives the target signal sent by the first network side device at the target resource location, and then uses the target signal to complete operations such as automatic gain control or time-frequency tracking, thereby achieving on-demand synchronization with the energy-saving cell and improving flexibility.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application;

FIG2 is a flowchart of an implementation method of a cell synchronization method in an embodiment of the present application;

FIG3 is a schematic diagram of a specific example of cell synchronization in an embodiment of the present application;

FIG4 is a schematic diagram of another specific example of cell synchronization in an embodiment of the present application;

FIG5 is a schematic diagram of another specific example of cell synchronization in an embodiment of the present application;

FIG6 is a schematic diagram of another specific example of cell synchronization in an embodiment of the present application;

FIG7 is a schematic diagram of the structure of a cell synchronization device corresponding to FIG2 in an embodiment of the present application;

FIG8 is a flowchart of another cell synchronization method in an embodiment of the present application;

FIG9 is a schematic structural diagram of a cell synchronization device corresponding to FIG8 in an embodiment of the present application;

FIG10 is a flowchart of another cell synchronization method in an embodiment of the present application;

FIG11 is a schematic structural diagram of a cell synchronization device corresponding to FIG10 in an embodiment of the present application;

FIG12 is a schematic diagram of the structure of a communication device in an embodiment of the present application;

FIG13 is a schematic diagram of the hardware structure of a terminal in an embodiment of the present application;

FIG14 is a schematic diagram of the structure of a network-side device in an embodiment of the present application.

Specific embodiments

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the ^6th Generation (6G) communication system.

FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12 .

The terminal 11 may be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality device (AR), or a tablet computer. The terminal side devices include AR/virtual reality (VR) devices, robots, wearable devices, vehicle-mounted equipment (VUE), pedestrian terminals (PUE), smart homes (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (PC), ATMs or self-service machines, etc., and wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in the embodiment of the present application.

The network side device 12 may include an access network device or a core network device. Among them, the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting and receiving point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

Before describing the technical solution of the embodiment of the present application, the cell activation in the related art is first introduced.

In related technologies, if a network-side device wants to activate a secondary cell for a terminal, it can be achieved by configuring the secondary cell to be added modification list (sCellToAddModList) information element to carry the secondary cell state (sCellState) or the secondary cell activation/deactivation (SCell Activation/Deactivation) MAC layer control unit (MAC Control Element, MAC CE) through the radio resource control (Radio Resource Control, RRC). After the terminal receives the activation command, it can start to detect the SSB sent by the secondary cell to complete the automatic gain control or time-frequency tracking operation. However, there is a problem with this technology, that is, after the terminal receives the activation command, a worse situation is that it needs to wait for about 20ms to receive the SSB of a secondary cell. Based on this, in the R17 version of the protocol, 3GPP introduced a fast secondary cell activation technology to reduce the delay of the network-side device to activate the secondary cell for the terminal.

The main idea of fast secondary cell activation is that when the terminal receives the R17 enhanced SCell Activation/Deactivation MAC layer control unit (R17 Enhanced SCell Activation/Deactivation MAC CE) sent by the network side device, it indicates that the network side device wants to activate a secondary cell. If a tracking reference signal (TRS) is indicated, the terminal can detect TRS at an offset position from the reply HARQ ACK after replying the hybrid automatic repeat request (HARQ) ACK, so as to reduce the delay of the terminal waiting for the secondary cell SSB.

The above is an introduction to cell activation in related technologies. Currently, the 3GPP protocol has not yet defined the technology for the terminal to send an activation request to the energy-saving cell through a wake-up signal. The cell decides whether to activate the cell by detecting the wake-up signal sent by the terminal. After sending the wake-up signal, the terminal needs to detect the SSB sent by the energy-saving cell after activation, just like receiving the traditional secondary cell activation instruction. In a worse case, it takes 20ms to receive the SSB.

In view of this, an embodiment of the present application provides a cell synchronization method, which can enable a terminal to be synchronized with a cell corresponding to a first network side device on demand, thereby improving flexibility.

The cell synchronization method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

Referring to FIG. 2 , which is a flowchart of an implementation of a cell synchronization method provided in an embodiment of the present application, the method may include the following steps:

S210: The terminal sends a first signal to the first network side device.

The first signal is used to trigger the first network side device to send a target signal. The first signal is a signal used to activate or wake up the energy-saving cell. The target signal includes a reference signal or a synchronization signal.

The terminal may be the terminal 11 in FIG. 1, and the first network side device may be the network side device 12 in FIG. 1. The first network side device may include one or more cells, and the energy-saving cell may be one of the cells. The first network side device is an entity concept, and the cell is a logical concept. The first network side device in the embodiment of the present application can be understood as a cell, such as an energy-saving cell.

When a certain condition is met, the terminal may send a first signal to the first network side device, where the first signal is a signal for activating or waking up the energy-saving cell, and is used to trigger the first network side device to send a target signal. Optionally, the terminal may send the first signal to the first network side device upon receiving the indication information, and may also send the first signal to the first network side device when leaving the service range of the service cell, about to enter or having entered the service range of the energy-saving cell.

The first signal may include at least one of the following:

Wake-up signal (WUS);

Sounding Reference Signal (SRS);

Random Access Channel (RACH) preamble signal;

Cell activation request signal;

Cell wake-up request signal.

In the 5G system, in order to further improve the power saving performance of the terminal, a wake-up signal based on the Physical Downlink Control Channel (PDCCH) is introduced. The purpose of the wake-up signal is to inform the terminal whether it needs to monitor the physical downlink control channel during the activation period (onDuration) of a specific discontinuous reception (DRX). In the absence of data, the terminal does not need to monitor the physical downlink control channel during the activation period, that is, the onDuration period, which is equivalent to the terminal being in a dormant state throughout the entire discontinuous reception long cycle (DRX Long cycle), thereby further saving power.

The wake-up signal in the related art is a downlink control information (DCI), referred to as DCP (DCI with CRC scrambled by PS-RNTI), where PS-RNTI is a network side The device allocates a Radio Network Temporary Identity (RNTI) for the terminal specifically for power saving features. The DCI scrambled with the RNTI carries the network-side device's wake-up/sleep indication for the terminal. Based on the indication, the terminal decides whether to start the activation period timer in the next discontinuous reception cycle and whether to monitor the physical downlink control channel.

The above is the application of the wake-up signal in the downlink. The wake-up signal in the embodiment of the present application is an uplink wake-up signal. The terminal can send a wake-up signal to the first network side device to trigger the first network side device to send a target signal.

The first signal may include at least one of a wake-up signal, a detection reference signal, a random access channel preamble signal, a cell activation request signal, and a cell wake-up request signal, so as to trigger the first network side device to send a target signal to activate or wake up the energy-saving cell.

S220: The terminal determines a target resource location of a target signal according to the target configuration information.

The terminal may obtain target configuration information in advance, and the target configuration information may be sent to the terminal by the second network side device, and the target configuration information is used to determine the target resource location of the target signal. In the embodiment of the present application, the second network side device may be understood as a cell, such as a serving cell. The second network side device and the first network side device may be the same device or different devices, and the serving cell and the energy-saving cell may be the same cell or different cells. The target resource location may include a target time domain resource location and/or a target frequency domain resource location.

The target configuration information may include at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

Among them, the time domain interval between the first signal and the target signal can be used to know how long it takes to detect the target signal after sending the first signal, and the frequency domain resources included in the target resource position of the target signal can be obtained in advance.

The resource information of the target signal may include at least one of the following: a resource set used to transmit the target signal; an identifier of the resource set used to transmit the target signal. A resource set may include time domain resources, frequency domain resources or other resources. If the time domain resources and frequency domain resources used to transmit the target signal can be obtained through the resource information of the target signal, the target resource position of the target signal can be determined according to the resource information of the target signal. Of course, for greater accuracy, the target resource position of the target signal can also be determined in combination with the time domain interval between the first signal and the target signal. If only the frequency domain resources used to transmit the target signal can be obtained through the resource information of the target signal, the target resource position of the target signal can be determined in combination with the time domain interval between the first signal and the target signal.

That is to say, when possible, the target resource position of the target signal can be determined by using the time domain interval between the first signal and the target signal or the resource information of the target signal alone, or by combining the two.

S230: The terminal receives a target signal sent by the first network side device at the target resource location.

In the embodiment of the present application, the terminal can determine the target resource location of the target signal according to the target configuration information. The terminal sends a first signal to the first network side device, which can trigger the first network side device to send the target signal. After receiving the first signal, the first network side device can learn that the terminal has a synchronization requirement, and can determine the target resource location of the target signal to be sent according to some configuration information specified in the protocol or preset, and send the target signal at the target resource location. The terminal can monitor the signal at the target resource location and receive the target signal sent by the first network side device.

After the terminal receives the target signal, it can use the target signal to complete operations such as automatic gain control and time-frequency tracking.

It should be noted that before the first network side device sends the target signal, the energy-saving cell may be in an energy-saving state or in a normal state. The energy-saving state refers to the state achieved by the energy-saving cell using a certain energy-saving technology, such as a state of sending a long-period synchronization signal block or not sending a synchronization signal block. The normal state refers to the state in which the energy-saving cell receives and sends signals normally. When the energy-saving cell is in the energy-saving state, the first network side device receives the first signal, sends the target signal, activates or wakes up the energy-saving cell, and causes the energy-saving cell to enter a normal state. When the energy-saving cell is in a normal state, the first network side device receives the first signal, sends the target signal, and the energy-saving cell remains in a normal state.

Applying the method provided in the embodiment of the present application, the terminal sends a first signal to the first network side device, and the first signal is used to trigger the first network side device to send a target signal. The first signal is a signal used to activate or wake up the energy-saving cell. The target signal may include a reference signal or a synchronization signal. The target configuration information includes resource information of the target signal and/or the time domain interval between the first signal and the target signal. After the terminal determines the target resource location of the target signal according to the target configuration information, it receives the target signal sent by the first network side device at the target resource location, and then uses the target signal to complete operations such as automatic gain control or time-frequency tracking, thereby achieving on-demand synchronization with the energy-saving cell and improving flexibility.

In one embodiment of the present application, the target configuration information may further include a first signal index. Before the terminal determines the target resource location of the target signal according to the target configuration information, the method may further include the following steps:

The terminal determines the target configuration information according to the first signal index corresponding to the first signal resource for transmitting the first signal and the mapping relationship between the first signal index and the target configuration information.

In an embodiment of the present application, the second network side device can perform relevant configuration of the first signal resource for the terminal to obtain first signal configuration information. There can be multiple available first signal resources in the first signal configuration information, so that the terminal can know which first signal resources can be used to send the first signal.

For example, the first signal configuration information includes the following first signal resources:

First signal resource one;

First signal resource two;

First signal resource three;

First signal resource four;

…

Each first signal resource includes the following information:

When the terminal needs to send a first signal, it selects a first signal resource from multiple available first signal resources for transmitting the first signal. Of course, it does not mean that all first signal resources in the first signal configuration information can send the first signal. For example, when the terminal detects that a first signal resource is interfered, it will not select the first signal resource to send the first signal, or the terminal needs to send a higher priority sidelink transmission block in a first signal resource. Each first signal resource corresponds to a first signal index. When the terminal selects a first signal resource to transmit the first signal, the first signal index corresponding to the first signal resource for transmitting the first signal is obtained.

In addition, the second network side device may configure a first configuration information list, which includes one or more first configuration information, such as:

First configuration information one;

First configuration information two;

First configuration information three;

…

The first signal index may be configured in each first configuration information.

Before the terminal determines the target resource location of the target signal according to the target configuration information, the terminal may determine the target configuration information according to the first signal index corresponding to the first signal resource that transmits the first signal, and the mapping relationship between the first signal index and the target configuration information. For example, the terminal may search for the first configuration information including the first signal index in the first configuration information list according to the first signal index corresponding to the first signal resource that transmits the first signal, and determine the found first configuration information as the target configuration information.

The target configuration information is one or more first configuration information in the first configuration information list. If the target configuration information is multiple first configuration information, the terminal can determine multiple target resource locations of the target signal according to the target configuration information, and can monitor the target signal at each target resource location. Optionally, if the target signal is monitored at one target resource location, the signal at other target resource locations may no longer be monitored.

For example, the terminal determines to use a certain first signal resource, such as the first signal resource 2 to send the first signal. The first signal index corresponding to the first signal resource 2 is 2. The terminal can search in the first configuration information list to determine whether there is first configuration information containing the first signal index = 2 in the first configuration information list. If it exists, the terminal can determine the first configuration information as the target configuration information, and determine the target resource position of the target signal according to the target configuration information, that is, the resource information of the target signal in the target configuration information, the time domain interval between the first signal and the target signal, etc. can be used to determine the target resource position. If it does not exist, it is considered that there is no target signal associated with the first signal transmitted by the first signal resource corresponding to the first signal index = 2, and the terminal can directly blindly detect the synchronization signal after sending the first signal.

It should be noted that each first configuration information in the first configuration information list may have multiple implementation forms, such as:

Implementation form 1:

This implementation requires that the resource information of each signal be fully included.

Implementation form 2:

Implementation form three:

Implementation form 4:

Implementation forms 2, 3, and 4 associate the parameters in the first configuration information with an element in the first signal configuration information or the reference signal configuration information by means of indexing (the index usually only requires a few bits), which can save more bits in the first configuration information.

The reference signal configuration information may include the following reference signal resources:

Reference signal resource 1;

Reference signal resource 2;

Reference signal resource three;

Reference signal resource 4;

…

Each reference signal resource includes the following information:

Each reference signal configuration index corresponds to an element in the reference signal configuration information, for example, reference signal configuration index one corresponds to reference signal resource one.

In one embodiment of the present application, the target signal may include a reference signal or a synchronization signal.

Optionally, the reference signal may include at least one of the following:

Tracking Reference Signal (TRS);

Channel State Information-Reference Signal (CSI-RS);

Non-zero power (NZP) channel state information reference signal;

Aperiodic channel state information reference signal.

Optionally, the synchronization signal may include at least one of the following:

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal;

The synchronization signal block includes the primary synchronization signal (PSS)/secondary synchronization signals (SSS) and the physical broadcast channel (PBCH); the primary synchronization signal and the secondary synchronization signal can also be called a simplified synchronization signal block (simplified SSB), which only includes the primary synchronization signal/slave synchronization signal. Optionally, the simplified synchronization signal block can also carry an additional information indication part, which is not expanded here.

If the target signal includes a reference signal, the first signal sent by the terminal to the first network side device can trigger the first network side device to send the reference signal, and the terminal can perform operations such as automatic gain control and time-frequency tracking using the reference signal.

If the target signal includes a synchronization signal, the first signal sent by the terminal to the first network side device can trigger the first network side device to send the synchronization signal, and the terminal can perform operations such as automatic gain control and time-frequency tracking using the synchronization signal.

In one embodiment of the present application, the target configuration information may further include a signal type of the target signal.

The target configuration information includes the signal type of the target signal. The signal type can be used to determine whether the target signal associated with the first signal is a reference signal or a synchronization signal, so that the terminal can monitor the corresponding signal.

In one embodiment of the present application, in the case where the target signal includes a reference signal, the reference signal may include a second signal and/or a third signal;

Wherein, the second signal is used for automatic gain control operation, and the third signal is used for time-frequency tracking operation;

In the case where the reference signal includes the second signal and the third signal, the target configuration information may further include a time domain interval between the second signal and the third signal.

In an embodiment of the present application, if the target signal includes a reference signal, the reference signal may include a second signal and/or a third signal, that is, the reference signal may include a second signal, or include a third signal, or include a second signal and a third signal. In the case where the reference signal includes a second signal and a third signal, the target configuration information may also include a time domain interval between the second signal and the third signal. In this way, the time domain interval between the first signal and the second signal, the time domain interval between the first signal and the third signal, and the time domain interval between the second signal and the third signal can be known through the target configuration information, and the time domain interval between the two signals is obtained, which is convenient for determining the target resource location of the target signal.

The terminal can perform different operations using different signals. For example, the second signal is used to perform the automatic gain control operation, and the third signal is used to perform the time-frequency tracking operation. Alternatively, the second signal is used to perform the time-frequency tracking operation, and the third signal is used to perform the automatic gain control operation. Alternatively, the historical reference signal is used to perform the automatic gain control operation, and the second signal or the third signal is used to perform the time-frequency tracking operation.

In one embodiment of the present application, the terminal sending the first signal to the first network side device may include the following steps:

Step 1: The terminal determines a first signal resource for transmitting a first signal based on the first signal configuration information;

Step 2: The terminal uses the first signal resource to send a first signal to the first network side device.

For the convenience of description, the above two steps are combined for explanation.

The first signal configuration information has been described above. The first signal configuration information includes multiple first signal resources. The terminal can determine a first signal resource for transmitting the first signal, and use the determined first signal resource to send the first signal to the first network side device.

That is, the terminal can independently select the first signal resource to send the first signal to better meet the terminal's own needs and receive the target signal in time.

In one embodiment of the present application, the target configuration information may further include at least one of the following:

Quasi Co-location (QCL) information;

Transmission Configuration Indicator (TCI) status;

Transport configuration index status indicator.

Among them, the so-called quasi-colocation (QCL) means that if the wireless channel properties of one antenna port can be inferred from the wireless channel properties of another antenna port, then the two antenna ports are quasi-colocated. The quasi-colocation relationship represents the difference between the antenna ports in terms of Doppler domain spread, Doppler frequency shift, delay spread, The relationship between average delay, spatial receiver parameters, etc. The quasi-co-location information can be used to know which receiving beams have a quasi-co-location relationship.

Multiple receiving beams having a quasi-co-location relationship can be learned through the transmission configuration index state and/or the transmission configuration index state identifier.

The above information can be used to configure the signal reception status of the terminal, making it easier for the terminal to receive the target signal.

The target configuration information may further include resource information of the first signal, and the resource information of the first signal may include at least one of a resource set used to transmit the first signal and an identifier of the resource set used to transmit the first signal.

In one embodiment of the present application, the target configuration information is determined according to the terminal capability of the terminal and/or the reference signal configuration information of the first network side device.

In the embodiment of the present application, the target configuration information is one or more first configuration information in the first configuration information list, and the target configuration information may be determined according to the terminal capability of the terminal, or may be determined according to the reference signal configuration information of the first network side device, or may be determined according to the terminal capability of the terminal and the reference signal configuration information of the first network side device. For example, the resource information of the target signal, the time domain interval between the first signal and the target signal, etc. may be determined according to the reference signal configuration information of the first network side device.

In one embodiment of the present application, before the terminal determines the target resource location of the target signal according to the target configuration information, the method may further include the following steps:

The terminal reports the terminal capability to the second network side device;

The terminal receives the target configuration information sent by the second network side device.

In an embodiment of the present application, the target configuration information may be sent to the terminal after being determined by the second network side device, that is, the terminal receives the target configuration information sent by the second network side device. The second network side device may obtain the terminal capability of the terminal through terminal reporting and other methods. In addition, if the second network side device and the first network side device are the same device, the second network side device has the reference signal configuration information. If the second network side device and the first network side device are different devices, the second network side device may obtain the reference signal configuration information through interaction with the first network side device.

The target configuration information is determined according to the terminal capability of the terminal and/or the reference signal configuration information of the first network side device, so that the terminal can accurately determine the target resource position of the target signal based on the target configuration information.

In one embodiment of the present application, the terminal capability may include at least one of the following:

Whether the ability to send the first signal is supported;

Whether the ability to send a first signal to trigger the corresponding network side device to send a reference signal is supported.

If the terminal has the capability to support sending the first signal, the second network side device may determine the target configuration information, send the target configuration information to the terminal, or send a first configuration information list including the target configuration information, so that the terminal determines the target resource location of the target signal according to the target configuration information after sending the first signal to the first network side device. If the terminal does not have the capability to support sending the first signal, the second network side device does not need to determine the target configuration information, and does not need to send the target configuration information to the terminal.

If the terminal has the capability to support sending a first signal to trigger the corresponding network side device to send a reference signal, a first signal resource associated with the reference signal may be configured in the target configuration information. If the terminal does not have the capability to support sending a first signal to trigger the corresponding network side device to send a reference signal, a first signal resource associated with the synchronization signal may be configured in the target configuration information.

The target configuration information is determined according to the terminal capability of the terminal, so that the target configuration information obtained by the terminal is more consistent with the actual situation of the terminal.

In one embodiment of the present application, before the terminal sends the first signal to the first network side device, the method may further include the following steps:

The terminal receives instruction information sent by the second network side device, where the instruction information is used to instruct the terminal to send a first signal;

The terminal sending the first signal to the first network side device may include the following steps:

The terminal sends a first signal to the first network side device according to the indication information.

In an embodiment of the present application, the second network side device may send indication information to the terminal, and the indication information is used to instruct the terminal to send the first signal. After receiving the indication information sent by the second network side device, the terminal may send the first signal to the first network side device according to the indication information. The indication information may be transmitted through radio resource control signaling, a control unit of the MAC layer, or downlink control information.

The terminal sends the first signal according to the instruction information of the second network side device, and the terminal itself does not need to judge whether the conditions for sending the first signal are met, thereby avoiding the situation where the terminal mistakenly sends the first signal for a long time and cannot receive the target signal.

In one embodiment of the present application, the indication information may carry the first signal index, and the terminal sends the first signal to the first network side device according to the indication information, which may include the following steps:

The first step: the terminal determines the first signal resource corresponding to the first signal index carried by the indication information;

The second step: the terminal uses the first signal resource to send the first signal to the first network side device.

The second network side device sends an indication message to the terminal, and the indication message may carry a first signal index. After receiving the indication message sent by the second network side device, the terminal may determine a first signal resource corresponding to the first signal index carried in the indication message, and the first signal resource is a resource indicated by the second network side device to the terminal for transmitting the first signal. The terminal may use the first signal resource to send the first signal to the first network side device.

For example, the second network side device instructs the terminal to send a first signal, and the indication information carries a first signal index, such as the first signal index = 3. Then the terminal can send the first signal according to the first signal resource corresponding to the first signal index = 3.

The second network side device carries the first signal index through the indication information to indicate to the terminal which first signal resource to use for sending the first signal, and the terminal does not need to determine which first signal resource to use by itself.

In one embodiment of the present application, the indication information does not carry the first signal index, and the terminal sends the first signal to the first network side device according to the indication information, which may include the following steps:

The first step: the terminal determines, in the first signal configuration information, a first signal resource for transmitting the first signal according to the indication information;

In an embodiment of the present application, the second network side device sends an indication message to the terminal, and the indication message does not carry the first signal index. After receiving the indication message sent by the second network side device, the terminal can select the first signal resource for transmitting the first signal by itself, and then use the first signal resource to send the first signal to the first network side device. This method has been described above and will not be repeated here.

In one embodiment of the present application, the target configuration information may further include a reference signal configuration index. When the indication information carries the reference signal configuration index, before the terminal determines the target resource location of the target signal according to the target configuration information, the method may further include the following steps:

The terminal determines the target configuration information according to the reference signal configuration index carried in the indication information and the mapping relationship between the reference signal configuration index and the target configuration information.

In an embodiment of the present application, the target configuration information may further include a reference signal configuration index, and each reference signal configuration index may correspond to a reference signal resource in the reference signal configuration information.

The second network side device sends an indication message to the terminal, and the indication message may carry a reference signal configuration index. After the terminal receives the indication message sent by the second network side device, the target configuration information may be determined according to the reference signal configuration index carried in the indication message, and the mapping relationship between the reference signal configuration index and the target configuration information. For example, the first configuration information including the reference signal configuration index in the first configuration information list may be searched according to the reference signal configuration index carried in the indication message, and the first configuration information found may be determined as the target configuration information, and then the target resource location of the target signal may be determined according to the target configuration information.

At the same time, the terminal can find the reference signal configuration information and the reference signal resource corresponding to it according to the reference signal configuration index, so as to determine the target resource position.

In the case where the indication information does not carry the reference signal configuration index, the terminal may monitor the synchronization signal after sending the first signal.

It should be noted that the target configuration information and indication information sent by the second network side device to the terminal can be carried in the same signaling or carried in different signaling.

In one embodiment of the present application, the target configuration information may further include discontinuous transmission configuration information of the first network side device and/or discontinuous reception configuration information of the terminal, and the terminal determines the target resource location of the target signal according to the target configuration information, which may include the following steps:

Step 1: The terminal determines a signal receiving period and/or a signal receiving window according to discontinuous transmission configuration information and/or discontinuous reception configuration information;

Step 2: The terminal determines the target resource position of the target signal within the signal receiving period and/or signal receiving window.

In an embodiment of the present application, the target configuration information may also include discontinuous transmission configuration information of the first network side device and/or discontinuous reception configuration information of the terminal.

It is understandable that one way to save energy in an energy-saving cell is to configure energy saving by configuring discontinuous transmission of the cell or discontinuous transmission of the network. In this way, the energy-saving cell only sends signals during the discontinuous transmission activation period, that is, the discontinuous transmission opening stage, and the terminal also needs to monitor the downlink signal during the cell discontinuous transmission activation period. Under the premise that the service requirements or service performance of the terminal are acceptable, this method is beneficial to cell energy saving or terminal energy saving.

The related art defines the terminal discontinuous reception configuration, and the terminal will monitor the physical downlink control channel only during the discontinuous reception activation period. The terminal discontinuous reception configuration includes discontinuous reception parameters such as the discontinuous reception period and the discontinuous reception activation period. However, the related art has not yet defined the cell discontinuous transmission. Considering the difference between the first network side device's configuration of the cell discontinuous transmission and the terminal's discontinuous reception configuration, the terminal and the first network side device need to align their understanding of the signal transceiver window.

Therefore, in the embodiment of the present application, the understanding of the terminal and the first network side device on the cell discontinuous transmission configuration and the terminal discontinuous reception configuration is further considered, and how it affects the terminal's reception of the reference signal or the synchronization signal is explained.

The cell discontinuous transmission configuration may be determined by discontinuous transmission configuration information of the first network side device, and the discontinuous transmission configuration information of the first network side device may include at least one of the following discontinuous transmission parameters:

Discontinuous transmission activation period timer, i.e. DTX on-duration timer;

Discontinuous transmission cycle start offset, i.e. DTX cycle start offset;

Discontinuous transmission slot offset, i.e. DTX slot offset;

Discontinuous transmission cycle, that is, DTX cycle.

The terminal discontinuous reception configuration may be determined by discontinuous reception configuration information of the terminal, and the discontinuous reception configuration information of the terminal may include at least one of the following discontinuous reception parameters:

Discontinuous reception activation period timer, i.e. DRX on-duration timer;

Discontinuous reception cycle start offset, i.e. DRX cycle start offset;

Discontinuous reception slot offset, i.e. DRX slot offset;

Discontinuous reception cycle, i.e. DRX cycle.

The terminal may determine the signal receiving period and/or the signal receiving window according to the discontinuous transmission configuration information and/or the discontinuous reception configuration information. That is, determine the period and/or window in which the terminal receives the signal sent by the first network side device. Then, the terminal may determine the target resource location of the target signal within the signal receiving period and/or the signal receiving window.

If the target configuration information only includes the discontinuous transmission configuration information of the first network side device, the terminal may determine the signal receiving period and/or the signal receiving window according to the discontinuous transmission configuration information;

If the target configuration information only includes the discontinuous reception configuration information of the terminal, the terminal may determine the signal reception period and/or the signal reception window according to the discontinuous reception configuration information;

If the target configuration information includes discontinuous transmission configuration information of the first network side device and discontinuous reception configuration information of the terminal, the terminal may determine a signal reception period and/or a signal reception window according to the discontinuous transmission configuration information and the discontinuous reception configuration information.

Among them, when the target configuration information includes discontinuous transmission configuration information and discontinuous reception configuration information, the signal reception period determined by the terminal may be the larger one of the discontinuous transmission period of the first network side device and the discontinuous reception period of the terminal.

For example, the discontinuous sending period of the first network side device is 640ms, and the discontinuous receiving period of the terminal is 320ms. Since the discontinuous sending period of the first network side device is longer, it means that within 640ms, there will be a 320ms discontinuous receiving period of the terminal. During the activation period of the discontinuous receiving period, the first network side device will not send a downlink signal, so the period for the terminal to receive the signal sent by the first network side device, that is, the signal receiving period can be determined to be 640ms; for another example, the discontinuous receiving period of the terminal is 640ms, and the discontinuous sending period of the first network side device is 320ms. Since the discontinuous receiving period of the terminal is longer, the terminal does not need to monitor the signal sent by the first network side device according to the shorter discontinuous sending period of the first network side device.

When the target configuration information includes discontinuous transmission configuration information and discontinuous reception configuration information, the signal reception window determined by the terminal may be the intersection of the discontinuous transmission transmission window of the first network side device and the discontinuous reception reception window of the terminal.

The sending window of the discontinuous transmission of the first network side device can be determined by the discontinuous transmission activation period timer, the discontinuous transmission cycle start time offset, and the discontinuous transmission time slot offset; the receiving window of the discontinuous reception of the terminal can be determined by the discontinuous reception activation period timer, the discontinuous reception cycle start time offset, and the discontinuous reception time slot offset.

Optionally, the discontinuous reception parameters of the terminal may be determined according to the discontinuous reception configuration notified by the second network side device through a system message, or determined by the discontinuous reception configuration configured by the second network side device through wireless resource control, or determined by the discontinuous reception configuration configured by the second network side device through a non-access stratum (NAS).

After the terminal determines the target resource position of the target signal within the signal receiving period and/or the signal receiving window, the terminal can receive the target signal at the target resource position.

The technical solution provided in the embodiment of the present application is described above. For ease of understanding, the technical solution provided in the embodiment of the present application is further explained below through a specific application scenario. Because the target configuration information is one or more first configuration information in the first configuration information list, the first configuration information mentioned below and the target configuration information mentioned above can be understood as the same concept.

Application scenario 1: The terminal decides to send the first signal, such as WUS, by itself.

Specific example 1: WUS is associated with TRS.

When a cell enters energy-saving mode, possible energy-saving measures include sending a long-period SSB, such as a 160ms period SSB, and detecting the SSB after the terminal sends an activation request to the first network side device, such as the energy-saving cell. When the energy-saving cell receives a WUS, it is possible that an SSB has just been missed. If the energy-saving cell subsequently intends to switch from a 160ms to a 20ms normal SSB working cycle, the terminal will need to wait for about 20ms to detect the SSB. Therefore, the energy-saving cell reference signal takes TRS as an example. In this specific example, when the energy-saving cell receives a WUS, TRS can be sent to the terminal to quickly activate the cell for the terminal.

As shown in Figure 3:

Step 1: The terminal reports the terminal capability to the second network side device, such as the serving cell. The terminal capability may include at least one of the following:

Whether to support the ability to send WUS to energy-saving cells;

Whether the ability to send a WUS to trigger the energy-saving cell to send a reference signal (for rapid cell activation) is supported;

Step 2: The second network side device, such as a serving cell, sends first configuration information to the terminal. The first configuration information may include:

(1) The time interval between the first signal and the second signal;

The first signal is an uplink signal sent by the terminal, including but not limited to a wake-up signal, a sounding reference signal, a random access signal preamble signal, a cell activation request signal, and a cell wake-up request signal;

The second signal is a reference signal sent by the energy-saving cell, which can be used by the terminal to perform automatic gain control, time-frequency tracking and other operations. The second signal can be a reference signal such as a channel state information reference signal and a tracking reference signal;

(2) a time interval between the first signal and the third signal;

The third signal is a reference signal sent by the energy-saving cell, which can be used by the terminal to perform automatic gain control, time-frequency tracking and other operations. The second signal can be a reference signal such as a channel state information reference signal and a tracking reference signal;

(3) first signal index;

The second network side device may configure multiple available first signal resources for the terminal, and each first signal resource corresponds to a first signal index. When the second network side device configures the second signal and/or the third signal for the terminal, it may associate it with the first signal resource corresponding to a first signal index. The first signal index may be understood as the first signal index associated with the second signal and/or the third signal;

(4) a resource set used to transmit a second signal;

(5) an identifier of a resource set used to transmit a second signal;

(6) a resource set used to transmit a third signal;

(7) an identifier of a resource set used to transmit a third signal;

(8) Quasi-co-location information;

(9) Transmission configuration index status;

(10) Transmission configuration index status identifier;

(11) a time interval between the second signal and the third signal;

(12) resource information of the first signal;

Step 3: The terminal sends a first signal to a first network side device, such as an energy-saving cell, and determines a target resource location of a second signal and/or a third signal according to the first configuration information, and monitors the second signal and/or the third signal at the target resource location. or third signal;

Step 4: If the first network side device, such as the energy-saving cell, receives the first signal sent by the terminal, the first network side device may send the second signal and/or the third signal according to the reference signal configuration information.

Specific example 2: WUS is associated with TRS or SSB.

Specific example 1 illustrates the way in which WUS is associated with TRS. In fact, affected by the resource location for sending WUS allocated by the second network side device to the terminal, the terminal may be able to detect the SSB sent by the energy-saving cell at a nearby location after sending WUS. In this case, the second network side device does not need to associate the WUS sent by the terminal with a TRS, but can directly associate it with SSB. Therefore, when the second network side device allocates WUS resources to the terminal, it can also specify whether the resource is associated with TRS or SSB to perform automatic gain control, time-frequency tracking and other operations.

The details are shown in Figure 4:

Whether to support the ability to send WUS to energy-saving cells;

(1) a time interval between the first signal and the fourth signal;

The fourth signal is the SSB sent by the energy-saving cell;

(2) the signal type associated with the first signal;

The signal type may include the TRS referred to by the second signal/third signal in the specific example 1 or an equivalent name of the reference signal, such as CSI-RS, NZP-CSI-RS, aperiodic CSI-RS; and may also include SSB, aperiodic SSB;

(3) a time interval between the first signal and the second signal;

The second signal is a reference signal sent by the energy-saving cell, which can be used for the terminal to perform automatic gain control or time-frequency tracking. The second signal can be a reference signal such as a channel state information reference signal and a tracking reference signal;

(4) a time interval between the first signal and the third signal;

The third signal is a reference signal sent by the energy-saving cell, which can be used for the terminal to perform automatic gain control or time-frequency tracking. The second signal can be a reference signal such as a channel state information reference signal and a tracking reference signal;

(5) first signal index;

It can be understood as a first signal index associated with the SSB, or associated with the second signal and/or the third signal;

(6) a resource set used to transmit a second signal;

(7) an identifier of a resource set used to transmit a second signal;

(8) a resource set used to transmit a third signal;

(9) an identifier of a resource set used to transmit a third signal;

(10) Quasi-co-location information;

(11) Transmission configuration index status;

(12) Transmission configuration index status indicator;

(13) a time interval between the second signal and the third signal;

(14) resource information of the first signal;

Step 3: The terminal sends a first signal to a first network side device, such as an energy-saving cell, and determines a target resource location of a second signal and/or a third signal, or an SSB according to the first configuration information, and monitors the second signal and/or the third signal, or monitors the SSB at the target resource location;

Step 4: If the first network side device, such as the energy-saving cell, receives the first signal sent by the terminal, the first network side device may send the SSB, or send the second signal and/or the third signal according to the reference signal configuration information.

Application scenario two: the second network side device, such as a serving cell, instructs the terminal to send a first signal, such as a WUS.

Specific example three: WUS is associated with TRS.

The details are shown in Figure 5:

Whether to support the ability to send WUS to energy-saving cells;

(1) The time interval between the first signal and the second signal;

(2) a time interval between the first signal and the third signal;

(3) first signal index;

The first signal index may be understood as a first signal index associated with the second signal and/or the third signal;

(4) a resource set used to transmit a second signal;

(5) an identifier of a resource set used to transmit a second signal;

(6) a resource set used to transmit a third signal;

(7) an identifier of a resource set used to transmit a third signal;

(8) Quasi-co-location information;

(9) Transmission configuration index status;

(10) Transmission configuration index status identifier;

(11) a time interval between the second signal and the third signal;

(12) resource information of the first signal;

(13) reference signal configuration index;

The reference signal configuration index refers to the index of the reference signal configuration in the reference signal configuration list;

Step 3: The second network side device, such as the serving cell, instructs the terminal to send a first signal to the first network side device, such as the energy-saving cell, through indication information.

Optionally, the indication information further includes a reference signal configuration index, that is, the reference signal configuration index in Step 2;

Optionally, if the indication information does not include a reference signal configuration index, the terminal monitors the SSB after sending the first signal;

Optionally, the indication information is transmitted through radio resource control signaling, a control unit of a MAC layer, or downlink control information:

Optionally, the indication information is sent simultaneously with the first configuration information;

Step 4: The terminal sends a first signal to a first network side device, such as an energy-saving cell, and determines a target resource location of a second signal and/or a third signal according to the first configuration information, and monitors the second signal and/or the third signal at the target resource location;

Step 5: If the first network side device, such as the energy-saving cell, receives the first signal sent by the terminal, the first network side device may send the second signal and/or the third signal according to the reference signal configuration information.

Specific example 4: WUS is associated with TRS or SSB.

The details are shown in Figure 6:

Whether to support the ability to send WUS to energy-saving cells;

(1) a time interval between the first signal and the fourth signal;

The fourth signal is the SSB sent by the energy-saving cell;

(2) the signal type associated with the first signal;

(3) a time interval between the first signal and the second signal;

(4) a time interval between the first signal and the third signal;

(5) first signal index;

The first signal index may be understood as a first signal index associated with the SSB, or associated with the second signal and/or the third signal;

(6) a resource set used to transmit a second signal;

(7) an identifier of a resource set used to transmit a second signal;

(8) a resource set used to transmit a third signal;

(9) an identifier of a resource set used to transmit a third signal;

(10) Quasi-co-location information;

(11) Transmission configuration index status;

(12) Transmission configuration index status indicator;

(13) a time interval between the second signal and the third signal;

(14) resource information of the first signal;

(15) reference signal configuration index;

The reference signal configuration index refers to the index of the reference signal resource in the reference signal configuration information;

Optionally, the indication information carries a reference signal configuration index, that is, the reference signal configuration index in Step 2;

Optionally, if the indication information does not carry the reference signal configuration index, the terminal monitors the SSB after sending the first signal;

Step 4: The terminal sends a first signal to a first network side device, such as an energy-saving cell, and determines the target resource location of the second signal and/or the third signal, or the SSB according to the first configuration information, and monitors the target resource location. Second signal and/or third signal, or monitoring SSB;

Step 5: If the first network side device, such as the energy-saving cell, receives the first signal sent by the terminal, the first network side device may send the SSB, or send the second signal and/or the third signal according to the reference signal configuration information.

The serving cell and the energy-saving cell may be the same cell or different cells.

The technical solution provided by the embodiment of the present application is described above through specific application scenarios and specific examples. In general, the embodiment of the present application is to associate the first signal sent by the terminal with the target resource location of the target signal sent by the first network side device, and the second network side device informs the terminal of the association relationship through the target configuration information. If the first network side device successfully receives the first signal, it will send the target signal at the target resource location associated with the first signal, and the terminal can monitor the target signal at the target resource location to achieve rapid synchronization with the cell.

The cell synchronization method provided in the embodiment of the present application may be executed by a cell synchronization device. In the embodiment of the present application, the cell synchronization device provided in the embodiment of the present application is described by taking the cell synchronization method executed by the cell synchronization device as an example.

As shown in FIG. 7 , a cell synchronization device 700 may include the following modules:

A first sending module 710 is configured to send a first signal to a first network side device, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

A first determination module 720, configured to determine a target resource location of a target signal according to target configuration information;

A first receiving module 730 is configured to receive a target signal sent by a first network side device at a target resource location;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

Using the device provided in the embodiment of the present application, a first signal is sent to a first network side device, where the first signal is used to trigger the first network side device to send a target signal. The first signal is a signal for activating or waking up an energy-saving cell. The target signal may include a reference signal or a synchronization signal. The target configuration information includes resource information of the target signal and/or a time domain interval between the first signal and the target signal. After determining the target resource position of the target signal according to the target configuration information, the target signal sent by the first network side device is received at the target resource position. The target signal can then be used to complete operations such as automatic gain control or time-frequency tracking, thereby achieving on-demand synchronization with the energy-saving cell and improving flexibility.

In a specific implementation manner of the present application, the target configuration information further includes a first signal index, and the first determination module 720 is further configured to:

The target configuration information is determined in the first configuration information list according to a first signal index corresponding to a first signal resource for transmitting the first signal and a mapping relationship between the first signal index and the target configuration information.

In a specific implementation of the present application, the resource information of the target signal includes at least one of the following:

a set of resources used to transmit a target signal;

The identifier of the resource set used to transmit the target signal.

In a specific implementation manner of the present application, the target configuration information further includes resource information of the first signal, and the resource information of the first signal includes at least one of the following:

a resource set for transmitting a first signal;

An identifier of a resource set used to transmit the first signal.

In a specific implementation of the present application, the first signal includes at least one of the following:

Wake-up signal;

detecting a reference signal;

Random access channel preamble signal;

Cell activation request signal;

Cell wake-up request signal.

In a specific implementation of the present application, the reference signal includes at least one of the following:

Tracking reference signal;

Channel state information reference signal;

A non-zero power channel state information reference signal;

Aperiodic channel state information reference signal.

In a specific implementation of the present application, the synchronization signal includes at least one of the following:

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal.

In a specific implementation of the present application, when the target signal includes a reference signal, the reference signal includes a second signal and/or a third signal;

Alternatively, the second signal is used for a time-frequency tracking operation, and the third signal is used for an automatic gain control operation;

In the case where the reference signal includes the second signal and the third signal, the target configuration information further includes a time domain interval between the second signal and the third signal.

In a specific implementation of the present application, the first sending module 710 is used to:

Determining, based on the first signal configuration information, a first signal resource for transmitting the first signal;

A first signal is sent to a first network side device using a first signal resource.

In a specific implementation manner of the present application, the resource information of the first signal includes a resource set used to transmit the first signal and/or an identifier of a resource set used to transmit the first signal.

In a specific implementation of the present application, the target configuration information further includes at least one of the following:

Signal type of the target signal;

Quasi-co-location information;

Transfer configuration index status;

Transport configuration index status indicator.

In a specific implementation of the present application, the target configuration information is determined according to the terminal capability of the terminal and/or the reference signal configuration information of the first network side device;

The terminal capability includes at least one of the following:

Whether the ability to send the first signal is supported;

Whether the ability to send a first signal to trigger the network side device to send a reference signal is supported.

In a specific implementation of the present application, the first sending module 710 is further configured to report the terminal capability to the second network side device;

The first receiving module 730 is further used to receive target configuration information sent by the second network side device;

The terminal capability includes at least one of the following:

Whether the ability to send the first signal is supported;

In a specific implementation of the present application, the first receiving module 730 is further configured to:

Before sending the first signal to the first network side device, receiving indication information sent by the second network side device, where the indication information is used to instruct the terminal to send the first signal;

The first sending module 710 is configured to:

According to the indication information, a first signal is sent to the first network side device.

In a specific implementation manner of the present application, the indication information carries the first signal index, and the first sending module 710 is configured to:

Determine a first signal resource corresponding to the first signal index carried by the indication information;

Sending a first signal to a first network side device using a first signal resource;

In a specific implementation manner of the present application, the indication information does not carry the first signal index, and the first sending module 710 is configured to:

Determine, according to the indication information, a first signal resource for transmitting the first signal in the first signal configuration information;

In a specific implementation manner of the present application, the target configuration information further includes a reference signal configuration index. When the indication information carries the reference signal configuration index, the first determining module 720 is further configured to:

Before determining the target resource position of the target signal according to the target configuration information, the target configuration information is determined in the first configuration information list according to the reference signal configuration index carried in the indication information and the mapping relationship between the reference signal configuration index and the target configuration information.

In a specific implementation manner of the present application, the indication information is transmitted via radio resource control signaling, or a control unit of a MAC layer, or downlink control information.

In a specific implementation manner of the present application, the target configuration information further includes discontinuous transmission configuration information of the first network side device and/or discontinuous reception configuration information of the terminal, and the first determination module 720 is used to:

Determine the signal receiving period and/or signal receiving period according to the discontinuous transmission configuration information and/or the discontinuous reception configuration information. Number receiving window;

A target resource position of a target signal is determined within a signal receiving period and/or a signal receiving window.

In a specific implementation manner of the present application, the discontinuous transmission configuration information includes at least one of the following discontinuous transmission parameters:

Discontinuous transmission activation period timer;

Discontinuous transmission cycle start time offset;

Discontinuous transmission slot offset;

Discontinuous transmission cycle.

In a specific implementation manner of the present application, the discontinuous reception configuration information includes at least one of the following discontinuous reception parameters:

Discontinuous reception activation period timer;

Discontinuous reception cycle start time offset;

Discontinuous reception slot offset;

Discontinuous reception cycle.

In a specific embodiment of the present application, the discontinuous reception parameters are determined according to the discontinuous reception configuration notified by the second network side device through a system message, or determined by the discontinuous reception configuration configured by the second network side device through wireless resource control, or determined by the discontinuous reception configuration configured by the second network side device through a non-access layer.

In a specific implementation of the present application, when the target configuration information includes discontinuous transmission configuration information and discontinuous reception configuration information, the signal reception period is the larger one of the discontinuous transmission period and the discontinuous reception period.

The cell synchronization device 700 in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or it can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The cell synchronization device 700 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid repetition, it will not be described here.

Corresponding to the method embodiment shown in FIG2 , the embodiment of the present application further provides a cell synchronization method, as shown in FIG8 , the method may include the following steps:

S810: The first network side device receives a first signal sent by the terminal, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

S820: The first network side device sends a target signal at a target resource location.

Using the method provided in the embodiment of the present application, the first network side device receives the first signal sent by the terminal Afterwards, the target signal is sent at the target resource location, so that after the terminal sends the first signal, it can quickly receive the target signal sent by the first network side device, and can achieve on-demand synchronization between the terminal and the cell corresponding to the first network side device, thereby improving flexibility.

Wake-up signal;

detecting a reference signal;

Random access channel preamble signal;

Cell activation request signal;

Cell wake-up request signal.

Tracking reference signal;

Channel state information reference signal;

A non-zero power channel state information reference signal;

Aperiodic channel state information reference signal.

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal.

The specific implementation process of the method embodiment shown in FIG8 can refer to the specific implementation process of the method embodiment shown in FIG2 , and achieve the same technical effect. To avoid repetition, it will not be described again.

As shown in FIG9 , a cell synchronization device 900 may include the following modules:

The second receiving module 910 is used to receive a first signal sent by the terminal, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The second sending module 920 is configured to send a target signal at a target resource location.

By applying the device provided in the embodiment of the present application, after receiving the first signal sent by the terminal, the target signal is sent at the target resource location, so that the terminal can quickly receive the target signal sent by the first network side device after sending the first signal, and can achieve on-demand synchronization between the terminal and the corresponding cell of the first network side device, thereby improving flexibility.

Wake-up signal;

detecting a reference signal;

Random access channel preamble signal;

Cell activation request signal;

Cell wake-up request signal.

Tracking reference signal;

Channel state information reference signal;

A non-zero power channel state information reference signal;

Aperiodic channel state information reference signal.

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal.

The cell synchronization device 900 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 8 and achieve the same technical effect. To avoid repetition, it will not be described here.

Corresponding to the method embodiments shown in FIG. 2 and FIG. 8 , the embodiment of the present application further provides a cell synchronization method, as shown in FIG. 10 , the method may include the following steps:

S1010: The second network side device sends target configuration information to the terminal, where the target configuration information is used to determine the target resource location of the target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends the first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

By applying the method provided in the embodiment of the present application, the second network side device sends target configuration information to the terminal, where the target configuration information includes resource information of the target signal and/or the time domain interval between the first signal and the target signal. After the terminal determines the target resource position of the target signal according to the target configuration information, it receives the target signal sent by the first network side device at the target resource position, and then uses the target signal to complete operations such as automatic gain control or time-frequency tracking, thereby achieving on-demand synchronization with the energy-saving cell and improving flexibility.

First signal index;

resource information of the first signal;

Signal type of the target signal;

Quasi-co-location information;

Transfer configuration index status;

Transport configuration index status indicator.

In a specific implementation manner of the present application, before the second network side device sends the target configuration information to the terminal, it also includes:

The second network side device receives the terminal capability reported by the terminal;

The second network side device obtains the reference signal configuration information of the first network side device;

The second network side device determines the target configuration information according to the terminal capability and/or the reference signal configuration information;

The terminal capability includes at least one of the following:

Whether the ability to send the first signal is supported;

In a specific implementation of the present application, it also includes:

The second network side device sends indication information to the terminal, where the indication information is used to instruct the terminal to send a first signal.

In a specific implementation of the present application, the indication information carries a first signal index, which is used to instruct the terminal to transmit the first signal using a first signal resource corresponding to the first signal index carried by the indication information.

The specific implementation process of the method embodiment shown in FIG. 10 can refer to the specific implementation process of the method embodiments shown in FIG. 2 and FIG. 8 , and the same technical effect can be achieved. To avoid repetition, it will not be described again.

As shown in FIG11 , the cell synchronization device 1100 may include the following modules:

The third sending module 1110 is used to send target configuration information to the terminal, where the target configuration information is used to determine the target resource location of the target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends the first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.

The device provided in the embodiment of the present application is used to send target configuration information to the terminal, where the target configuration information includes resource information of the target signal and/or the time domain interval between the first signal and the target signal, and the terminal receives the target signal according to the target After the configuration information determines the target resource location of the target signal, the target signal sent by the first network side device is received at the target resource location, and then the target signal can be used to complete operations such as automatic gain control or time-frequency tracking, thereby achieving on-demand synchronization with the energy-saving cell and improving flexibility.

First signal index;

resource information of the first signal;

Signal type of the target signal;

Quasi-co-location information;

Transfer configuration index status;

Transport configuration index status indicator.

In a specific implementation of the present application, the cell synchronization device 1100 further includes:

A third receiving module, used to receive terminal capabilities reported by the terminal;

An obtaining module, used to obtain reference signal configuration information of a first network side device;

A third determination module, configured to determine target configuration information according to terminal capabilities and/or reference signal configuration information;

The terminal capability includes at least one of the following:

Whether the ability to send the first signal is supported;

In a specific implementation of the present application, the third sending module 1110 is further configured to:

Send indication information to the terminal, where the indication information is used to instruct the terminal to send a first signal.

The cell synchronization device 1100 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 10 and achieve the same technical effect. To avoid repetition, it will not be described again here.

As shown in FIG12, the embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202, and the memory 1202 stores a program or instruction that can be run on the processor 1201. For example, when the communication device 1200 is a terminal, the program or instruction is executed by the processor 1201 to implement the various steps of the method embodiment shown in FIG2 above, and can achieve the same technical effect. When the communication device 1200 is a network side device, the program or instruction is executed by the processor 1201 to implement the various steps of the method embodiment shown in FIG8 above, or to implement the various steps of the method embodiment shown in FIG10, and can achieve the same technical effect. To avoid repetition, I will not go into details here.

Specifically, FIG13 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1300 includes but is not limited to: a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309 and at least some of the components of a processor 1310.

Those skilled in the art will appreciate that the terminal 1300 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1310 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG13 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 1304 may include a graphics processing unit (GPU) 13041 and a microphone 13042, and the graphics processor 13041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and at least one of other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1301 can transmit the data to the processor 1310 for processing; in addition, the RF unit 1301 can send uplink data to the network side device. Generally, the RF unit 1301 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1309 may include a volatile memory or a non-volatile memory, or the memory 1309 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (DDRSDRAM), etc. SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM, SLDRAM) and direct RAM bus random access memory (Direct Rambus RAM, DRRAM). The memory 1309 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, the processor 1310 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1310.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 14, the network side device 1400 includes: an antenna 1401, a radio frequency device 1402, a baseband device 1403, a processor 1404 and a memory 1405. The antenna 1401 is connected to the radio frequency device 1402. In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401 and sends the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402. The radio frequency device 1402 processes the received information and sends it out through the antenna 1401.

The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1403, which includes a baseband processor.

The baseband device 1403 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 14, one of which is, for example, a baseband processor, which is connected to the memory 1405 through a bus interface to call the program in the memory 1405 and execute the network device operations shown in the above method embodiment.

The network side device may also include a network interface 1406, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1400 of the embodiment of the present application also includes: instructions or programs stored in the memory 1405 and executable on the processor 1404. The processor 1404 calls the instructions or programs in the memory 1405 to execute the methods executed by the modules shown in Figure 9 or Figure 11, and achieves the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the method embodiment shown in Figures 2, 8 or 10 above are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

The embodiments of the present application further provide a computer program/program product, which is stored in a storage medium and is executed by at least one processor to implement the various processes of the method embodiments shown in Figures 2, 8 or 10 above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The present application also provides a communication system, including: a terminal, a first network side device and a second network side device. The terminal may be used to execute the steps of the method shown in FIG. 2 as described above, the first network side device may be used to execute the steps of the method shown in FIG. 8 as described above, and the second network side device may be used to execute the steps of the method shown in FIG. 10 as described above.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

A cell synchronization method, comprising:

The terminal sends a first signal to the first network side device, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The terminal determines the target resource location of the target signal according to the target configuration information;

The terminal receives the target signal sent by the first network side device at the target resource location;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.
The method according to claim 1, wherein the target configuration information further includes a first signal index, and before the terminal determines the target resource location of the target signal according to the target configuration information, further comprising:

The terminal determines the target configuration information according to a first signal index corresponding to a first signal resource for transmitting the first signal and a mapping relationship between the first signal index and the target configuration information.
The method according to claim 1, wherein the resource information of the target signal includes at least one of the following:

a resource set used to transmit the target signal;

An identifier of a resource set used to transmit the target signal.
The method according to claim 1, wherein the target configuration information further includes resource information of the first signal, and the resource information of the first signal includes at least one of the following:

a resource set used to transmit the first signal;

An identifier of a resource set used to transmit the first signal.
The method according to any one of claims 1 to 4, wherein the first signal comprises at least one of the following:

Wake-up signal;

detecting a reference signal;

Random access channel preamble signal;

Cell activation request signal;

Cell wake-up request signal.
The method according to any one of claims 1 to 4, wherein the reference signal comprises at least one of the following:

Tracking reference signal;

Channel state information reference signal;

A non-zero power channel state information reference signal;

Aperiodic channel state information reference signal.
The method according to any one of claims 1 to 4, wherein the synchronization signal comprises at least one of the following:

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal.
The method according to any one of claims 1 to 4, wherein, in the case where the target signal includes a reference signal, the reference signal includes a second signal and/or a third signal;

Wherein, the second signal is used for automatic gain control operation, and the third signal is used for time-frequency tracking operation;

In a case where the reference signal includes the second signal and the third signal, the target configuration information further includes a time domain interval between the second signal and the third signal.
The method according to any one of claims 1 to 4, wherein the terminal sends a first signal to the first network side device, comprising:

The terminal determines, based on the first signal configuration information, a first signal resource for transmitting the first signal;

The terminal sends a first signal to a first network side device using the first signal resource.
The method according to any one of claims 1 to 4, wherein the target configuration information further includes at least one of the following:

A signal type of the target signal;

Quasi-co-location information;

Transfer configuration index status;

Transport configuration index status indicator.
The method according to any one of claims 1 to 4, wherein the target configuration information is determined according to the terminal capability of the terminal and/or the reference signal configuration information of the first network side device;

The terminal capability includes at least one of the following:

whether the capability of sending the first signal is supported;

Whether the ability to send the first signal to trigger the network side device to send a reference signal is supported.
The method according to any one of claims 1 to 4, wherein, before the terminal determines the target resource location of the target signal according to the target configuration information, it also includes:

The terminal reports the terminal capability to the second network side device;

The terminal receives the target configuration information sent by the second network side device;

The terminal capability includes at least one of the following:

whether the capability of sending the first signal is supported;

Whether the ability to send the first signal to trigger the network side device to send a reference signal is supported.
The method according to claim 1, wherein, before the terminal sends the first signal to the first network side device, it also includes:

The terminal receives instruction information sent by the second network side device, and the instruction information is used to instruct the terminal The terminal sends a first signal;

The terminal sending a first signal to a first network side device includes:

The terminal sends the first signal to the first network side device according to the indication information.
The method according to claim 13, wherein the indication information carries a first signal index, and the terminal sends the first signal to the first network side device according to the indication information, comprising:

The terminal determines a first signal resource corresponding to a first signal index carried by the indication information;

The terminal sends the first signal to the first network side device using the first signal resource;

Alternatively, the indication information does not carry the first signal index, and the terminal sends the first signal to the first network side device according to the indication information, including:

The terminal determines, according to the indication information, a first signal resource for transmitting the first signal in the first signal configuration information;

The terminal sends the first signal to a first network side device using the first signal resource.
The method according to claim 13, wherein the target configuration information further includes a reference signal configuration index, and when the indication information carries the reference signal configuration index, before the terminal determines the target resource location of the target signal according to the target configuration information, further comprising:

The terminal determines the target configuration information according to the reference signal configuration index carried in the indication information and a mapping relationship between the reference signal configuration index and the target configuration information.
The method according to claim 15, wherein the indication information is transmitted via radio resource control signaling, or a control unit of a MAC layer, or downlink control information.
The method according to any one of claims 1 to 4, wherein the target configuration information further includes discontinuous transmission configuration information of the first network side device and/or discontinuous reception configuration information of the terminal, and the terminal determines the target resource location of the target signal according to the target configuration information, comprising:

The terminal determines a signal receiving period and/or a signal receiving window according to the discontinuous transmission configuration information and/or the discontinuous reception configuration information;

The terminal determines a target resource position of the target signal within the signal reception period and/or the signal reception window.
The method according to claim 17, wherein the discontinuous transmission configuration information comprises at least one of the following discontinuous transmission parameters:

Discontinuous transmission activation period timer;

Discontinuous transmission cycle start time offset;

Discontinuous transmission slot offset;

Discontinuous transmission cycle;

and / or,

The discontinuous reception configuration information includes at least one of the following discontinuous reception parameters:

Discontinuous reception activation period timer;

Discontinuous reception cycle start time offset;

Discontinuous reception slot offset;

Discontinuous reception cycle.
The method according to claim 18, wherein the discontinuous reception parameter is determined according to the discontinuous reception configuration notified by the second network side device through a system message, or determined by the discontinuous reception configuration configured by the second network side device through radio resource control, or determined by the discontinuous reception configuration configured by the second network side device through a non-access layer.
The method according to claim 18, wherein, when the target configuration information includes the discontinuous transmission configuration information and the discontinuous reception configuration information, the signal reception period is the larger of the discontinuous transmission period and the discontinuous reception period.
A cell synchronization device, comprising:

A first sending module, configured to send a first signal to a first network side device, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up an energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

A first determination module, configured to determine a target resource location of the target signal according to target configuration information;

A first receiving module, configured to receive the target signal sent by the first network side device at the target resource location;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.
A cell synchronization method, comprising:

A first network side device receives a first signal sent by a terminal, where the first signal is used to trigger the first network side device to send a target signal, where the first signal is a signal used to activate or wake up an energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The first network side device sends the target signal at a target resource location.
The method according to claim 22, wherein the first signal comprises at least one of the following:

Wake-up signal;

detecting a reference signal;

Random access channel preamble signal;

Cell activation request signal;

Cell wake-up request signal.
The method according to claim 22 or 23, wherein the reference signal comprises at least one of the following:

Tracking reference signal;

Channel state information reference signal;

A non-zero power channel state information reference signal;

Aperiodic channel state information reference signal.
The method according to claim 22 or 23, wherein the synchronization signal comprises at least one of the following:

Synchronous signal block;

Aperiodic synchronization signal block;

Master synchronization signal and slave synchronization signal.
A cell synchronization device, comprising:

A second receiving module, configured to receive a first signal sent by the terminal, wherein the first signal is used to trigger the first network side device to send a target signal, the first signal is used to activate or wake up a signal of the energy-saving cell, and the target signal includes a reference signal or a synchronization signal;

The second sending module is used to send the target signal at the target resource location.
A cell synchronization method, comprising:

The second network side device sends target configuration information to the terminal, where the target configuration information is used to determine the target resource location of the target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends the first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal for activating or waking up the energy-saving cell, and where the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.
The method according to claim 27, wherein the target configuration information further includes at least one of the following:

First signal index;

resource information of the first signal;

A signal type of the target signal;

Quasi-co-location information;

Transfer configuration index status;

Transport configuration index status indicator.
The method according to claim 27, wherein, in the case where the target signal includes a reference signal, the reference signal includes a second signal and/or a third signal;

Wherein, the second signal is used for automatic gain control operation, and the third signal is used for time-frequency tracking operation;

In a case where the reference signal includes the second signal and the third signal, the target configuration information further includes a time domain interval between the second signal and the third signal.
The method according to claim 27, wherein the second network side device sends the destination Before the standard configuration information, it also includes:

The second network side device receives terminal capabilities reported by the terminal;

The second network side device obtains reference signal configuration information of the first network side device;

The second network side device determines the target configuration information according to the terminal capability and/or the reference signal configuration information;

The terminal capability includes at least one of the following:

whether the capability of sending the first signal is supported;

Whether the ability to send the first signal to trigger the network side device to send a reference signal is supported.
The method according to any one of claims 27 to 30, further comprising:

The second network side device sends indication information to the terminal, where the indication information is used to instruct the terminal to send the first signal.
The method according to claim 31, wherein the indication information carries a first signal index, used to instruct the terminal to transmit the first signal using a first signal resource corresponding to the first signal index carried by the indication information.
A cell synchronization device, comprising:

A third sending module, configured to send target configuration information to the terminal, where the target configuration information is used to determine a target resource location of a target signal, where the target signal is a signal sent by the first network side device and received at the target resource location after the terminal sends a first signal to the first network side device, where the first signal is used to trigger the first network side device to send the target signal, where the first signal is a signal for activating or waking up an energy-saving cell, and where the target signal includes a reference signal or a synchronization signal;

The target configuration information includes at least one of the following:

A time domain interval between the first signal and the target signal;

Resource information of the target signal.
A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the cell synchronization method as described in any one of claims 1 to 20 are implemented.
A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the cell activation method as described in any one of claims 22 to 25, or implements the steps of the cell synchronization method as described in any one of claims 27 to 32.
A readable storage medium, wherein the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the cell synchronization method as described in any one of claims 1 to 20, or implements the cell synchronization method as described in any one of claims 22 to 25, or implements the steps of the cell synchronization method as described in any one of claims 27 to 32.