CN112533229A

CN112533229A - Synchronization indication method and device

Info

Publication number: CN112533229A
Application number: CN201910877912.XA
Authority: CN
Inventors: 陈晶晶
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-03-19

Abstract

The embodiment of the invention provides a synchronous indication method and equipment, wherein the method comprises the following steps: and receiving first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell. In the embodiment of the invention, the network issues the auxiliary information to indicate whether the terminal can obtain the SSB index of the target cell of the different frequency or different system according to the timing information of the service cell, thereby reducing the measurement time delay of the target cell and improving the mobility performance.

Description

Synchronization indication method and device

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a synchronization indication method and equipment.

Background

In a scenario of reporting beam (beam) quality, etc., a terminal needs to report an index (index) of a Synchronization Signal Block (SSB) corresponding to the beam quality at the same time. Therefore, the terminal needs to acquire the SSB index.

The time delay for the terminal to acquire the SSB index is related to the SSB transmission period and the number of samples. Taking a 160ms SSB sending cycle as an example, the time delay for the terminal to obtain the SSB index is at least 480 milliseconds (ms), and considering Discontinuous Reception (DRX) configuration, information such as the number of frequency points to be measured, and the like, the time delay for obtaining the SSB index is larger. For frequency points above 6GHz, the SSB Index information can be obtained only after the Physical Broadcast Channel (PBCH) demodulation is completed, and the delay is further increased.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a synchronization indication method and device, which solve the problem that a terminal has a long time delay for acquiring an SSB Index.

In a first aspect, an embodiment of the present invention provides a synchronization indication method, applied to a terminal, including:

and receiving first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

Optionally, the receiving the first information includes:

and receiving the first information from a network side through broadcast information or measurement configuration.

Optionally, the first information further indicates one or more of:

the target cell is synchronous with the service cell;

the target frequency point and the service frequency point are synchronous;

the target frequency point is synchronized with the serving cell.

Optionally, the target cell is a pilot frequency cell or a pilot system cell.

Optionally, the first information further indicates that all cells of the target frequency point are synchronized.

Optionally, the first information further indicates one or more of:

aligning system frame boundaries of the target cell and the serving cell;

aligning the frame boundaries of the target cell and the serving cell;

aligning the time slot boundaries of the target cell and the service cell;

aligning the symbol boundaries of the target cell and the serving cell;

aligning the frame boundary of the target cell with the time slot boundary of the serving cell;

the slot boundary of the target cell is aligned with the frame boundary of the serving cell.

Optionally, the first information further instructs the terminal to obtain timing information of the CSI-RS resource of the target cell through the timing information of the serving cell.

In a second aspect, an embodiment of the present invention further provides a synchronization indication method, applied to a network device, including:

and sending first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

Optionally, the sending the first information includes:

and sending the first information to the terminal through broadcast information or measurement configuration.

Optionally, the first information further indicates one or more of:

the target cell is synchronous with the service cell;

the target frequency point and the service frequency point are synchronous;

the target frequency point is synchronized with the serving cell.

Optionally, the target cell is a pilot frequency cell or a pilot system cell.

Optionally, the first information further indicates one or more of:

aligning system frame boundaries of the target cell and the serving cell;

aligning the frame boundaries of the target cell and the serving cell;

aligning the time slot boundaries of the target cell and the service cell;

aligning the symbol boundaries of the target cell and the serving cell;

In a third aspect, an embodiment of the present invention further provides a terminal, including: a first transceiver and a first processor, wherein the first transceiver is to: and receiving first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

In a fourth aspect, an embodiment of the present invention further provides a terminal, including:

a receiving module, configured to receive first information, where the first information indicates whether the terminal obtains an SSB index of a target cell according to timing information of a serving cell.

In a fifth aspect, an embodiment of the present invention further provides a network device, including: a second transceiver and a second processor, wherein the second transceiver is configured to: and sending first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

In a sixth aspect, an embodiment of the present invention further provides a network device, including:

and the sending module is used for sending first information, and the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

In a seventh aspect, an embodiment of the present invention further provides a communication device, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, carries out the steps of the method of synchronization indication according to the first or second aspect.

In an eighth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the step of indicating synchronization according to the first aspect or the second aspect.

In the embodiment of the invention, the network issues the auxiliary information to indicate whether the terminal can obtain the SSB index of the target cell of the different frequency or different system according to the timing information of the service cell, thereby reducing the measurement time delay of the target cell and improving the mobility performance.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic view of SSB time domain location;

FIG. 2 is a block diagram of a wireless communication system according to an embodiment of the present invention;

FIG. 3 is a flowchart of a synchronization indication method according to an embodiment of the present invention;

FIG. 4 is a second flowchart of a synchronization indication method according to an embodiment of the present invention;

FIG. 5 is a third flowchart of a synchronization indication method according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of a terminal according to an embodiment of the present invention

FIG. 8 is a diagram illustrating a network device according to an embodiment of the present invention;

fig. 9 is a second schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

Detailed Description

The transmission of SSBs is periodic with a certain period (synchronized Measurement Timing Configuration, SMTC) period (period)) and duration (SMTC duration). SSB beam scanning (surfing) is completed within the SMTC duration, i.e. complete cell coverage. Within the SMTC duration, the symbol position occupied by each SSB index is fixed. Taking the 15KHz subcarrier spacing (SCS) as an example, as shown in fig. 1, there are 2 SSB candidate locations within 1ms, and these two SSB candidate locations are fixed, and their starting locations are fixed as symbol #2 and symbol # 8. For frequency points below 6GHz, the maximum number of SSBs to transmit is 8, which takes 4 ms.

SSB #

0,1,2,3,4,5,6,7 are sent in sequence over the SSB candidate locations within these 4ms, see fig. 1.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The technology described herein is not limited to a 5th-generation (5G) system and a later-evolution communication system, and is not limited to an LTE/LTE evolution (LTE-a) system, and may also be used for various 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" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA)), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX)), IEEE 802.20, Flash-OFDM, and the like. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

Embodiments of the present invention are described below with reference to the accompanying drawings. The synchronization indication method and the synchronization indication equipment provided by the embodiment of the invention can be applied to a wireless communication system. Fig. 2 is a block diagram of a wireless communication system according to an embodiment of the present invention. As shown in fig. 2, the wireless communication system may include: network device 20 and terminal 21, terminal 21 may be referred to as UE21, and terminal 21 may communicate (transmit signaling or transmit data) with network device 20 and network device 31. In practical applications, the connections between the above devices may be wireless connections, and fig. 2 is illustrated with solid lines for convenience and intuition of the connection relationships between the devices.

The network device 20 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)).

The terminal 21 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device.

Referring to fig. 3, an embodiment of the present invention further provides a synchronization indication method, where an execution main body of the method may be a terminal, and the method includes the specific steps of: step 301.

Step 301: receiving first information indicating whether the terminal acquires a Synchronization Signal Block (SSB) index of a target cell according to timing information of a serving cell.

In some embodiments, the first information comprises: a first field, where when the first field is a first value (e.g., true), the first information indicates that the terminal acquires an SSB index of a target cell according to timing information of a serving cell; when the first field is a second value (e.g., false), the first information indicates that the terminal does not need to obtain the SSB index of the target cell according to the timing information of the serving cell.

In other embodiments, the first field is not configured in the first information, and the terminal may not obtain the SSB index of the target cell according to the timing information of the serving cell.

In some embodiments, the first information is received from the network side by broadcasting the information or by a measurement configuration. As an embodiment, the first information is received through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the first Information is received through a System Information Block (SIB) message.

In some embodiments, the first information indicates that the terminal obtains the synchronization signal block index of the target cell according to the timing information of the serving cell, and further includes that a timing difference value between the target cell and the serving cell is within a first threshold. Further, the first threshold may be indicated by the network side device, or may be predefined in a protocol.

In some embodiments, the first information indicates that the terminal obtains the synchronization signal block index of the target cell according to the timing information of the serving cell, and further includes that a timing difference value between the target cell and the serving cell is within a first threshold. The value of the first threshold may be at least one of:

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

In some embodiments, the first information further indicates one or more of: (1) the target cell is synchronous with the service cell; (2) the target frequency point and the service frequency point are synchronous; (3) the target frequency point is synchronized with the serving cell.

In some embodiments, the target cell is a pilot frequency cell or a pilot system cell.

In some embodiments, the first information further indicates that all cells of the target frequency point are synchronized.

In some embodiments, the first information further indicates one or more of: (1) aligning System Frame (SFN) boundaries of a target cell and a serving cell; (2) the target cell is aligned with the frame (frame) boundary of the serving cell; (3) the slot (slot) boundary of the target cell and the serving cell is aligned; (4) symbol (symbol) boundary alignment of the target cell and the serving cell; (5) aligning the frame boundary of the target cell with the time slot boundary of the serving cell; (6) the slot boundary of the target cell is aligned with the frame boundary of the serving cell.

In some embodiments, the first information indicates one or more of: (1) the target cell is synchronous with the service cell; (2) the target frequency point and the service frequency point are synchronous; (3) the target frequency point is synchronized with the serving cell. The synchronization further comprises one or more of: (1) the timing difference value of the target cell and the serving cell is within a second threshold; (2) the timing difference value of the target frequency point and the service frequency point is within a third threshold; (3) the difference in timing between the target frequency point and the serving cell is within a fourth threshold. The second threshold, the third threshold, and the fourth threshold may be indicated by the network side device, or may be predefined in a protocol.

In some embodiments, the first information indicates one or more of: (1) the target cell is synchronous with the service cell; (2) the target frequency point and the service frequency point are synchronous; (3) the target frequency point is synchronized with the serving cell. The synchronization further comprises one or more of: (1) the timing difference value of the target cell and the serving cell is within a second threshold; (2) the timing difference value of the target frequency point and the service frequency point is within a third threshold; (3) the difference in timing between the target frequency point and the serving cell is within a fourth threshold. The values of the second threshold, the third threshold, and the fourth threshold may be at least one of the following values:

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

In some embodiments, the first information further indicates timing information of a channel state information Reference Signal (CSI-RS) resource of the terminal acquiring the target cell through the timing information of the serving cell. In the embodiment of the invention, the network issues the auxiliary information to indicate whether the terminal can obtain the SSB index (SSB index) of the target cell of the different frequency or different system according to the timing information of the service cell, thereby reducing the measurement time delay of the target cell and improving the mobile performance.

Referring to fig. 4, an embodiment of the present invention further provides a synchronization indication method, where an execution main body of the method may be a network device, and the method includes the specific steps of: step 401.

Step 401: and sending first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

Specifically, the network indicates which Frequency points are synchronized with the serving cell, including an Absolute Radio Frequency Channel Number-ARFCN (e.g., E-ARFCN, N-ARFCN) of a Frequency point to be detected, an Absolute Radio Frequency Channel Number of the serving Frequency point, a target cell identifier, a serving cell identifier, and the like.

In some embodiments, the first information is transmitted to the terminal by broadcasting information or measurement configuration. In some embodiments, the first information is transmitted from a broadcast information or measurement configuration. As an embodiment, the network issues the first information through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the network issues the first Information through a System Information Block (SIB) message.

In some embodiments, the first information further indicates one or more of: (1) aligning system frame boundaries of the target cell and the serving cell; (2) aligning the frame boundaries of the target cell and the serving cell; (3) aligning the time slot boundaries of the target cell and the service cell; (4) aligning the symbol boundaries of the target cell and the serving cell; (5) aligning the frame boundary of the target cell with the time slot boundary of the serving cell; (6) the slot boundary of the target cell is aligned with the frame boundary of the serving cell.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

In some embodiments, the first information further indicates timing information of a channel state information Reference Signal (CSI-RS) resource of the terminal acquiring the target cell through the timing information of the serving cell.

An implementation of an embodiment of the present invention is described below with reference to fig. 5.

Referring to fig. 5, the specific steps are as follows:

step 501: the source base station obtains timing information of the target base station according to the interface between the base stations or through a network manager or a core network, and the source base station judges whether the source base station is synchronous with the target base station.

Step 502: and if the source base station is synchronous with the target base station, the network issues the first information.

The first information indicates that all cells of the frequency point to be measured are aligned to SFN and frame. If the source base station and the target base station are not synchronous, the network does not send the first information.

Further, the network may explicitly instruct the terminal to obtain the SSB index of the cell to be measured according to the timing information of the serving cell.

Step 503: and if the terminal receives the first information, the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

And if the terminal does not receive the first information, the terminal demodulates and acquires the SSB index of the target cell according to the DMRS sequence of the PBCH and/or the PBCH.

In one embodiment, the network issues the first message via an RRC message MeasConfig.

In another embodiment, the network issues the first information through an SIB message.

As an embodiment, by configuring true for the first information, the terminal may obtain the SSB index of the target cell according to the timing information of the serving cell. The first information is not configured or configured as false, and the terminal cannot acquire the SSB index of the target cell according to the timing information of the serving cell.

The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the synchronous indication method in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not repeated.

Referring to fig. 6, an embodiment of the present invention further provides a terminal, where the terminal 600 includes: a first transceiver 601 and a first processor 602, wherein the first transceiver 601 is configured to: and receiving first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

In some embodiments, the first transceiver 601 receives the first information from the network side by broadcasting the information or by measuring the configuration. As an embodiment, the first information is received through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the first Information is received through a System Information Block (SIB) message.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.

Referring to fig. 7, an embodiment of the present invention further provides a terminal, where the terminal 700 includes: a receiving module 701, configured to receive first information, where the first information indicates whether the terminal obtains a synchronization signal block SSB index of a target cell according to timing information of a serving cell.

In some embodiments, the receiving module 701 receives the first information from the network side through broadcast information or measurement configuration. As an embodiment, the first information is received through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the first Information is received through a System Information Block (SIB) message.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

The embodiment of the present invention further provides a network device, and as the principle of solving the problem of the network device is similar to the synchronization indication method in the embodiment of the present invention, the implementation of the network device may refer to the implementation of the method, and the repetition part is not described again.

Referring to fig. 8, an embodiment of the present invention further provides a network device, where the network device 800 includes: a second transceiver 801 and a second processor 802, wherein the second transceiver 801 is configured to: and sending first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

In some embodiments, the second transceiver 801 transmits the first information to the terminal by broadcasting information or measurement configuration. In some embodiments, the first information is transmitted from a broadcast information or measurement configuration. As an embodiment, the network issues the first information through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the network issues the first Information through a System Information Block (SIB) message.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

The network device provided by the embodiment of the present invention may implement the above-described embodiments, and the implementation principle and technical effect are similar, which are not described herein again.

Referring to fig. 9, an embodiment of the present invention further provides a network device, where the network device 900 includes: a sending module 901, configured to send first information, where the first information indicates whether the terminal obtains the SSB index of the target cell according to the timing information of the serving cell.

In some embodiments, the sending module 901 sends the first information to the terminal through broadcast information or measurement configuration. In some embodiments, the first information is transmitted from a broadcast information or measurement configuration. As an embodiment, the network issues the first information through a Radio Resource Control (RRC) message MeasConfig. As another embodiment, the network issues the first Information through a System Information Block (SIB) message.

(1) n symbol lengths, N being a positive number;

(2) the ratio to CP (extended prefix) satisfies a second threshold.

Referring to fig. 10, fig. 10 is a structural diagram of a communication device applied in the embodiment of the present invention, as shown in fig. 10, the communication device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein the processor 1001 may be responsible for managing the bus architecture and general processing. The memory 1003 may store data used by the processor 1001 in performing operations.

In one embodiment of the present invention, the communication device 1000 further comprises: a program stored on the memory 1003 and executable on the processor 1001, which when executed by the processor 1001, performs the steps in the above method.

In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The communication device provided by the embodiment of the present invention may execute the above method embodiments, and the implementation principle and technical effect are similar, which is not described herein again

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Memory (ROM), Erasable programmable Read-Only Memory (EPROM), Electrically Erasable programmable Read-Only Memory (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read-Only Memory (cd-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

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

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

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

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

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

Claims

1. A synchronization indication method is applied to a terminal, and is characterized by comprising the following steps:

2. The method of claim 1, wherein receiving the first information comprises:

3. The method of claim 1, wherein the first information further indicates one or more of:

the target cell is synchronous with the service cell;

the target frequency point and the service frequency point are synchronous;

the target frequency point is synchronized with the serving cell.

4. The method of claim 1, wherein the target cell is a inter-frequency cell or an inter-system cell.

5. The method of claim 1, wherein the first information further indicates synchronization of all cells in a target frequency point.

6. The method of claim 1, wherein the first information further indicates one or more of:

aligning system frame boundaries of the target cell and the serving cell;

aligning the frame boundaries of the target cell and the serving cell;

aligning the time slot boundaries of the target cell and the service cell;

aligning the symbol boundaries of the target cell and the serving cell;

7. The method of claim 1, wherein the first information further instructs the terminal to obtain timing information of a channel state information reference signal (CSI-RS) resource of a target cell through timing information of a serving cell.

8. A synchronization indication method applied to a network device is characterized by comprising the following steps:

9. The method of claim 8, wherein sending the first information comprises:

10. The method of claim 8, wherein the first information further indicates one or more of:

the target cell is synchronous with the service cell;

the target frequency point and the service frequency point are synchronous;

the target frequency point is synchronized with the serving cell.

11. The method of claim 8, wherein the target cell is a inter-frequency cell or an inter-system cell.

12. The method of claim 8, wherein the first information further indicates synchronization of all cells in a target frequency point.

13. The method of claim 8, wherein the first information further indicates one or more of:

aligning system frame boundaries of the target cell and the serving cell;

aligning the frame boundaries of the target cell and the serving cell;

aligning the time slot boundaries of the target cell and the service cell;

aligning the symbol boundaries of the target cell and the serving cell;

14. The method of claim 8, wherein the first information further instructs the terminal to obtain timing information of CSI-RS resources of the target cell through timing information of the serving cell.

15. A terminal, comprising: a first transceiver and a first processor, wherein the first transceiver is to: and receiving first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

16. A terminal, comprising:

17. A network device, comprising: a second transceiver and a second processor, wherein the second transceiver is configured to: and sending first information, wherein the first information indicates whether the terminal acquires the SSB index of the target cell according to the timing information of the serving cell.

18. A network device, comprising:

19. A communication device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of synchronization indication according to any of claims 1 to 14.

20. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the step of synchronizing an indication according to any one of claims 1 to 14.