CN113302975B

CN113302975B - Cell switching method, device, equipment and storage medium

Info

Publication number: CN113302975B
Application number: CN201980088161.1A
Authority: CN
Inventors: 文会; 东宁; 薄红瑞; 邢庆锋
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2022-05-10
Anticipated expiration: 2039-01-22
Also published as: CN113302975A; WO2020150883A1

Abstract

A cell switching method, device, equipment and storage medium. The method comprises the following steps: receiving a switching request, wherein the switching request is used for indicating a terminal device to be switched from a currently accessed cell to a target cell (S101); if the target cell is configured with the measurement timing configuration (SMTC), determining a first period according to the SMTC of the target cell, wherein the first period is less than or equal to the maximum time interval of a Synchronization Signal Block (SSB) (S102); and performing cell search and de-PBCH based on SSB according to the first period, and switching to the target cell (S103). The method considers the period of the SMTC, avoids wasting long time to search the cell, shortens the total switching time delay and improves the performance of cell switching.

Description

Cell switching method, device, equipment and storage medium

Technical Field

The present application relates to communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for cell handover.

Background

In order to ensure a connection between a network and a User Equipment (UE), mobility management, which is a generic term for related procedures, is not interrupted by the movement of the UE. In the idle state, the mobility management mainly refers to a cell selection/reselection (cell selection/reselection) process, and in the connected state, the mobility management mainly refers to a cell handover (handover). Whether cell selection/reselection or handover is based on the results of the measurements.

For 2G, 3G and 4G modes, the signals for measurement and synchronization are always present. While in the 5G mode, the signals for measurement and synchronization are not always present, but are present periodically. The configuration of the measurement signal in the 5G mode is called measurement timing configuration (SMTC), the UE only needs to perform cell search and SSB measurement in the period configured by the SMTC, for intra-frequency measurement, the network side may configure at most two SMTCs, the two SMTCs use the same length and time offset, and the periods may be different. For pilot frequency measurement, the network side only configures one SMTC for each frequency point.

When the UE is switched from 2G, 3G, 4G or 5G to 5G, the target cell for handover may be known or unknown, and for a handover to an unknown 5G cell scenario (also referred to as blind handover), a cell search and a Physical Broadcast Channel (PBCH) need to be performed first to obtain timing information of the target cell. When cell switching is carried out, if the SMTC is configured, cell search and PBCH (demodulation physical channel) of an unknown cell are carried out according to the period of the SMTC.

However, the protocol specifies that for an intra-frequency cell without saturation, a search time of one SMTC is required to search for SSB, and for an inter-frequency cell without saturation, a search time of three SMTCs is required to search for SSB. Meanwhile, the maximum time interval of the SSB specified in the protocol is 20ms, so that for a scenario in which the SMTC is greater than 20ms, a relatively long time is required for cell search according to the SMTC period, which results in a relatively long access delay for handover.

Disclosure of Invention

The application provides a cell switching method, a cell switching device and a cell switching storage medium, which are used for providing a cell switching scheme, shortening the cell search time and reducing the access time delay of switching.

A first aspect of the present application provides a method for switching a cell, where the method includes:

receiving a switching request, wherein the switching request is used for indicating terminal equipment to be switched from a currently accessed cell to a target cell;

if the target cell is configured with the SMTC, determining a first period according to the SMTC of the target cell, wherein the first period is less than or equal to the maximum time interval of a Synchronous Signal Block (SSB);

and performing cell search and PBCH (physical broadcast channel) removal processes based on SSB according to the first period, and switching to the target cell.

In the scheme, after determining that the target cell needs to be switched to, the terminal device first determines whether the target cell is configured with the SMTC, if the target cell is configured with the SMTC, a first period of cell search and PBCH is determined according to the SMTC of the target cell, wherein the first period is smaller than the maximum time interval of SSB, then SSB search and PBCH are performed according to the first period, and the target cell is switched to, considering the period of the SMTC, avoiding wasting a long time to perform cell search, shortening the total switching delay, and improving the performance of cell switching.

In a specific implementation of the foregoing scheme, the determining a first period according to the SMTC of the target cell includes:

if the measurement period indicated by the SMTC of the target cell is less than or equal to the maximum time interval of the SSB, taking the measurement period indicated by the SMTC of the target cell as the first period;

and if the measurement period indicated by the SMTC of the target cell is greater than the maximum time interval of the SSB, taking the maximum time interval of the SSB as the first period.

In the specific implementation manner of determining the periods of cell search and PBCH, if the configured period of the SMTC is less than the maximum time interval of the SSB, the cell search is directly performed according to the SMTC period, and if the configured period of the SMTC is greater than the maximum time interval of the SSB, the search is performed according to the maximum time interval of the SSB as the period, so that the total handover delay of the terminal device is shortened.

In one implementation of the above scheme, the SMTC of the target cell includes a measurement period, an offset location, and a duration.

In a specific implementation of the foregoing scheme, the method further includes:

and receiving system information sent by network equipment, wherein the system information carries the SMTC of the target cell.

The meaning of this scheme is that the network device can configure the SMTC of the target cell through a system message. The optional network device may also configure the SMTC of the target cell in a data interaction process performed by the terminal device or in other downlink messages, which is not limited in this scheme.

On the basis of any scheme, the method further comprises the following steps:

and if the target cell is not configured with the SMTC, performing cell search and PBCH based on SSB according to the maximum time interval of the SSB.

Optionally, the maximum time interval of the SSB is 20 ms.

Optionally, the cell to which the terminal device is currently accessed and the target cell may be a cell with the same frequency, a cell with different frequencies, or a cell with different systems.

In a second aspect, the present application provides a handover apparatus for a cell, including:

a receiving module, configured to receive a handover request, where the handover request is used to instruct a terminal device to handover from a currently accessed cell to a target cell;

a processing module, configured to determine a first period according to the SMTC of the target cell if the target cell is configured with the SMTC, where the first period is less than or equal to a maximum time interval of a synchronization signal block SSB;

the processing module is further configured to perform cell search and PBCH procedure based on SSB according to the first period, and switch to the target cell.

Optionally, the processing module is specifically configured to:

if the measurement period indicated by the SMTC of the target cell is less than or equal to the maximum time interval of SSB, taking the measurement period indicated by the SMTC of the target cell as the first period;

if the measurement period indicated by the SMTC of the target cell is greater than the maximum time interval of the SSB, the maximum time interval of the SSB is taken as the first period.

Optionally, the SMTC of the target cell includes a measurement period, an offset position, and a duration.

Optionally, the receiving module is further configured to receive system information sent by a network device, where the system information carries the SMTC of the target cell.

Optionally, the processing module is further configured to:

and if the target cell is not configured with the SMTC, performing cell search and PBCH based on the SSB according to the maximum time interval of the SSB.

Optionally, the maximum time interval of the SSB is 20 ms.

In a third aspect, the present application provides a terminal device, including: a memory, a processor, a receiver, and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method for handover of a cell in any implementation manner of the first aspect.

In a fourth aspect, the present application provides a storage medium comprising: a readable storage medium and a computer program for implementing the method for handover of a cell according to any one of the implementations of the first aspect.

In a fifth aspect, the present application provides a program product comprising a computer program stored in a readable storage medium, the computer program being readable from the readable storage medium by at least one processor of a terminal device, execution of the computer program by the at least one processor causing the terminal device to perform the method of:

receiving a switching request, wherein the switching request is used for indicating the terminal equipment to be switched from a currently accessed cell to a target cell;

determining whether the target cell is configured with a measurement timing configuration (SMTC) according to the switching request;

if the target cell is configured with the SMTC, determining a first period according to the SMTC of the target cell;

and carrying out cell search and PBCH (physical broadcast channel) removal processes based on the SSB (synchronization signal block) according to the first period, and switching to the target cell.

The program product can also be used to implement the cell handover method according to any of the embodiments of the first aspect when executed by a processor.

In a sixth aspect, the present application provides a chip, where the chip is applicable to a terminal device, and the chip includes: at least one communication interface, at least one processor, at least one memory, the communication interface, the memory and the processor interconnected by a bus, the processor calling a computer program stored in the memory to perform:

When the chip is applied to a terminal device, the cell switching method provided by any specific implementation manner of the first aspect can also be implemented.

The application provides a cell switching method, a device, equipment and a storage medium, wherein after receiving a switching request for indicating cell switching, terminal equipment determines whether a target cell indicated by the switching request is configured with an SMTC, if the target cell is configured with the SMTC, a first period of cell searching and PBCH (physical broadcast channel) processes based on SSB (secure cell barring) is determined according to the SMTC, the first period is smaller than or equal to the maximum time interval of the SSB, then the cell searching and PBCH processes are performed according to the first period, and the terminal equipment is switched to the target cell.

Drawings

Fig. 1 is a schematic diagram of unknown cell search performed according to a period indicated by SMTC;

fig. 2 is a schematic structural diagram of a specific terminal device provided in the present application;

fig. 3 is a schematic view of a specific application scenario of the cell handover method provided in the present application;

fig. 4 is a flowchart of a first embodiment of a cell handover method provided in the present application;

fig. 5 is a schematic diagram of cell search time in the cell handover method provided in the present application;

fig. 6 is a schematic structural diagram of a first embodiment of a handover apparatus for a cell according to the present application;

fig. 7 is a schematic structural diagram of another terminal device provided in the present application.

Detailed Description

As can be seen from the background art, for switching to an unknown 5G cell scene, cell search and PBCH demodulation are required first, and timing information of a target cell, including a system frame number, a subframe number, a slot number, and the like, is acquired.

Due to the periodicity of the 5G cell signal, the 5G cell needs to be measured within a specific measurement time window; if the 5G cell is measured outside the time window, the 5G cell is not measured, wasting measurement time.

Fig. 1 is a schematic diagram of performing unknown cell search according to a period indicated by an SMTC, and as shown in fig. 1, when performing handover, if the SMTC is configured, performing cell search and Physical Broadcast Channel (PBCH) demodulation of the unknown cell according to the period of the SMTC. According to a protocol, 1 SMTC search time is needed for a same-frequency cell without saturation; for the pilot frequency cell without saturation, the search time of 3 SMTCs is needed; the period of SMTC may be 5, 10, 20, 40, 80, 160 ms.

For scenarios where the SMTC period is greater than 20ms, (e.g., 40ms, 80ms, and 160ms), performing cell search according to the SMTC period is not an optimal solution. Since the maximum time interval of the SSB is 20ms according to the protocol.

Fig. 1 illustrates the time required by the conventional cell search protocol, taking an SMTC period of 80ms and a duration of 5ms as an example:

suppose that at the time of N +20ms, a handover request is received, and the measurement time windows of SMTC are N +80ms, N +160ms, and N +240 ms.

Assuming that the same frequency needs 1 smtc: 90-20 ═ 70 ms.

Suppose that the pilot frequency takes 3 smtc: 250-20 ═ 230 ms.

Based on the above scheme, if cell search and PBCH demodulation are performed according to the configuration period of SMTC, the required time is long, and access delay of handover is affected.

In view of the above problems, the present application provides a cell handover method to accelerate cell search and shorten handover delay.

The network elements involved in the handover method of the cell provided by the body include network equipment and a terminal of a user, also called terminal equipment, or user equipment. The network device refers to a device with a radio resource management function, which can communicate with the terminal devices or act as a central controller to assist the terminal devices in direct communication, for example: and a base station.

It should be understood that the network device in the present embodiment may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in LTE, a relay Station or Access point, a Base Station in 5G network, a Base Station in other future network systems, and the like, which are not limited herein.

The terminal device may be a wireless terminal or a wired terminal, and a wireless terminal may refer to a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.

Fig. 2 is a schematic diagram of a specific structure of a terminal device provided in the present application, as shown in fig. 2, which is convenient for understanding and illustration, in fig. 1, the terminal device is exemplified by a mobile phone, and the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input/output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of apparatuses may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to user equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 2. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 2, the terminal device includes a transceiving unit a and a processing unit B. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Optionally, a device for implementing a receiving function in the transceiver unit a may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit a may be regarded as a sending unit, that is, the transceiver unit a includes a receiving unit and a sending unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

Fig. 3 is a schematic diagram of a specific application scenario of the cell handover method provided in the present application, as shown in fig. 2, the scenario relates to a terminal device and a base station, that is, a network device is a base station, and the following takes the scenario as an example to describe the cell handover method provided in the present application. The cell currently accessed by the terminal device may be a 2G, 3G, 4G, 5G cell, and the target cell after handover is a 5G cell.

On the basis of the above scenario, the following is a method for cell handover provided by the present application through several specific embodiments.

Fig. 4 is a flowchart of a first embodiment of a cell handover method provided in the present application. As shown in fig. 4, the method for switching cells provided in this embodiment specifically includes the following steps:

s101: and receiving a switching request, wherein the switching request is used for indicating the terminal equipment to be switched from the currently accessed cell to the target cell.

In this step, a mode in which the 5G cell or other measurement signal does not exist all the time but exists periodically may be referred to as an SSB Measurement Timing Configuration (SMTC). Generally, an SMTC includes the period, length, and offset of the SMTC's measurement time window.

The network side can send a switching request to the terminal equipment when determining to switch the terminal equipment to the cell according to the position of the terminal equipment, a signal measurement result or other information, and correspondingly, the terminal equipment can receive the switching request for indicating the switching from the currently accessed cell to the target cell and trigger the cell switching process.

S102: and if the target cell is configured with the SMTC, determining a first period according to the SMTC of the target cell, wherein the first period is less than or equal to the maximum time interval of the synchronous signal block SSB.

In this step, after the terminal device receives the handover request to trigger cell handover, it needs to determine whether the target cell is configured with the SMTC, so as to determine a cell search period according to the SMTC. In a specific implementation manner, if the terminal device has received that the SMTC is configured for the target cell, the terminal device may store, query and determine the SMTC according to the identification information of the target cell, or query the SMTC from a protocol. If the terminal device determines that the target cell is configured with the SMTC, it needs to determine a first period for cell search and PBCH according to the SMTC of the target cell, otherwise, if the terminal device determines that the target cell is not configured with the SMTC, it needs to determine the first period for cell search and PBCH in another way.

In a specific implementation of the scheme, the specific implementation of determining, by the terminal device, the first period according to the SMTC of the target cell is as follows:

and if the measurement period indicated by the SMTC of the target cell is less than or equal to the maximum time interval of the SSB, taking the measurement period indicated by the SMTC of the target cell as a first period.

In a specific implementation manner of determining the first period of the cell search and the demodulation of the PBCH, if the configured period of the SMTC is less than the maximum time interval of the SSB, the cell search is directly performed according to the SMTC period, and if the configured period of the SMTC is greater than the maximum time interval of the SSB, the cell search is performed according to the maximum time interval of the SSB as the period, so that the total handover delay of the terminal device is shortened.

In the above scheme, the terminal device needs to acquire the SMTC of the target cell, and the first period can be determined according to the above method, where the method for the terminal device to acquire the SMTC of the target cell at least includes the following steps:

in the first mode, the terminal device receives system information sent by the network device, where the system information carries the SMTC corresponding to the target cell.

The meaning of the scheme is that a network side configures measurement timing of a target cell through system information or other high-level signaling, specifically, a message carrying the measurement timing configuration may be a system message, or a reconfiguration message, and the scheme is not limited.

A second mode, acquiring the measurement timing configuration corresponding to the target cell specified in a protocol;

the meaning of the scheme is that the SMTC corresponding to the target cell is specified in the protocol, namely written in the protocol, and the terminal equipment only needs to read the SMTC from the protocol in the using process.

Optionally, in addition to obtaining from the protocol or configuring on the network side, the terminal device itself selects a suitable measurement period, offset position and duration for the optimization scheme to obtain the SMTC, and then searches and switches the target cell according to the SMTC.

In the scheme, the SMTC of the target cell at least includes information such as a measurement period, an offset position, and a duration.

S103: and performing cell search and PBCH (physical broadcast channel) removal processes based on the SSB according to the first period, and switching to the target cell.

In this step, after determining the first period for performing the cell search and the PBCH demodulation process according to the above scheme, the terminal device performs the cell search based on the SSB according to the first period, performs the PBCH demodulation process, switches to the target cell, that is, accesses the target cell, and the target cell serves the terminal device.

In another case of this scheme, if the terminal device determines that the target cell is not configured with the SMTC, in order to implement the cell handover quickly, the cell search and the PBCH may be performed directly using the maximum implementation interval of the SSB, and the target cell is handed over to the target cell, that is, the target cell is accessed, and the target cell serves the terminal device.

In the cell handover method provided in this embodiment, after receiving a handover request indicating cell handover, a terminal device determines whether a target cell indicated by the handover request is configured with an SMTC, and if the target cell is configured with the SMTC, determines a first period of a cell search and de-PBCH process based on an SSB according to the SMTC, where the first period is less than or equal to a maximum time interval of the SSB, and then performs the cell search and de-PBCH process according to the first period, and switches the terminal device to the target cell.

Taking the network device as an example of a base station, when the cell handover scheme provided in the above embodiment is applied specifically, the base station configures handover for the terminal device, where the SMTC period of the target cell to be configured and handed over is greater than 20ms, and by determining the time interval between two air interface messages, that is, the time interval between a reconfiguration message with a handover command and the initiation of a preamble, it may be determined whether to perform cell handover using the above scheme. The base station configures switching for the terminal equipment, does not configure a target cell SMTC for switching, and can judge whether to use the scheme by determining the time interval of two air interface messages, namely the time interval from the reconfiguration message with the switching command to preamble initiation.

Currently, the maximum time interval of the SSB specified by the protocol is 20ms, so in a specific implementation of the foregoing embodiment, if the target cell for handover is configured with SMTC, if the configured SMTC period is less than or equal to 20ms, then according to the protocol, cell search and PBCH are performed according to the SMTC period, that is, the first period is less than 20 ms; if the configured SMTC period is more than 20ms, cell searching and PBCH are carried out by taking 20ms as the period, namely 20ms is carried out in the first period; and if the target cell for switching is not configured with the SMTC, performing cell search and PBCH (physical broadcast channel) at a period of 20ms to switch to the target cell.

Based on the above embodiments, the following describes the cell search time in the cell handover method provided in the present application, by taking an example where the period indicated by the SMTC of the target cell is 80ms, the signal duration is 5ms, and the duration is 5 ms.

Fig. 5 is a schematic diagram of cell search time in the cell switching method provided in the present application, and as shown in fig. 5, it is assumed that at the time of N +20ms, the terminal device receives a switching request, and the measurement time windows of the SMTC are N +80ms, N +160ms, and N +240 ms. The maximum SSB time interval specified according to the above protocol is 20ms, and the periodicity of cell search and PBCH can be determined to be 20ms according to the present scheme.

Suppose that the same frequency requires 1 cell search: the search time is 20 ms.

Suppose that the pilot frequency takes 3 cell searches: the search time is 20 x 3 to 60 ms.

The time is shortened compared with the original scheme shown in figure 1:

the same frequency 1 time of cell search shortens the time: 70-20 ms.

Reducing time of cell search for 3 times of pilot frequency: 230-60 ═ 170 ms.

In the cell switching method provided in the embodiment of the present application, when the SMTC period is greater than 20ms, the cell search and the PBCH are performed in 20ms as a period, which can accelerate the cell search and the PBCH process and shorten the total switching delay. While also reducing the interruption time of the user data.

Fig. 6 is a schematic structural diagram of a first embodiment of a handover apparatus for a cell according to the present application; as shown in fig. 6, the cell switching apparatus 10 includes:

a receiving module 11, configured to receive a handover request, where the handover request is used to instruct a terminal device to handover from a currently accessed cell to a target cell;

a processing module 12, configured to determine a first period according to the SMTC of the target cell if the target cell is configured with the SMTC, where the first period is less than or equal to a maximum time interval of a synchronization signal block SSB;

the processing module 12 is further configured to perform cell search and PBCH procedure based on SSB according to the first period, and switch to the target cell.

The device for switching a cell provided in this embodiment is configured to implement the technical solutions of any of the foregoing method embodiments, and the implementation principle and technical effects are similar, where the device determines, after receiving a handover request indicating cell handover, whether an SMTC is configured for a target cell indicated by the handover request, and if the SMTC is configured for the target cell, determines, according to the SMTC, a first period of a cell search and de-PBCH process based on an SSB, where the first period is less than or equal to a maximum time interval of the SSB, then performs the cell search and de-PBCH process according to the first period, and switches a terminal device to the target cell, and in the process, determines, based on the SMTC, that the period of the cell search is less than or equal to the maximum time interval of the SSB, thereby avoiding wasting a long time to perform the cell search, shortening a total handover delay, and improving efficiency of cell handover.

On the basis of the foregoing embodiment, in a specific implementation of the handover apparatus of the cell, the processing module 12 is specifically configured to:

Optionally, the receiving module 11 is further configured to receive system information sent by a network device, where the system information carries the SMTC of the target cell.

Optionally, the processing module 12 is further configured to:

Optionally, the maximum time interval of the SSB is 20 ms.

The cell switching apparatus provided in any implementation manner is used to implement the technical solution of any method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 7 is a schematic structural diagram of another terminal device provided in the present application. As shown in fig. 7, the terminal device includes:

memory, processor, receiver and computer program, and may further include a transmitter, the computer program being stored in the memory, the processor running the computer program to perform the handover method of a cell provided by any of the foregoing embodiments.

In a specific implementation of the above terminal device, the memory may be integrated within the processor. The number of processors is at least one, and is used to execute execution instructions stored in the memory, i.e., the computer program.

The present application also provides a storage medium comprising: a readable storage medium and a computer program for implementing the method for measuring a cell provided in any of the above method embodiments.

The present application further provides a program product, which includes a computer program stored in a readable storage medium, from which the computer program can be read by at least one processor of a terminal device, and the computer program is executed by the at least one processor to enable a user equipment to implement the method for handover of a cell provided in any of the method embodiments described above.

The application provides a chip, the chip can be applied to terminal equipment, the chip includes: at least one communication interface, at least one processor coupled with a memory via the communication interface, the processor invoking a computer program stored in the memory to perform a method of handover of a cell as provided by any of the method embodiments described above. Wherein, the memory can be arranged outside the chip or integrated in the chip. The communication interface may be various interfaces that enable the processor to access the memory, such as an input interface, a processing device, an output interface, a Universal Flash Storage (UFS) interface, a peripheral component interconnect express (PCIe) interface, and the like.

In a Specific implementation of the terminal device, it should be understood that the Processor may be a Central Processing Unit (CPU), other general-purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.

All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (flexible disk), optical disk (optical disk), and any combination thereof.

Claims

1. A method for handover of a cell, the method comprising:

if the target cell is configured with the measurement timing configuration (SMTC), determining a first period according to the SMTC of the target cell, wherein the first period is less than or equal to the maximum time interval of a Synchronous Signal Block (SSB);

according to the first period, cell search and PBCH (physical broadcast channel) processes based on SSB are carried out, and the target cell is switched;

the determining a first period according to the SMTC of the target cell includes:

2. The method of claim 1, wherein the SMTC of the target cell comprises a measurement period, an offset location, and a duration.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

4. The method of claim 1, further comprising:

5. The method of claim 1, wherein the maximum time interval of the SSB is 20 ms.

6. An apparatus for switching a cell, comprising:

a processing module, configured to determine a first period according to the SMTC of the target cell if the target cell configures a measurement timing configuration SMTC, where the first period is less than or equal to a maximum time interval of a synchronization signal block SSB;

the processing module is further configured to perform cell search and PBCH cancellation procedures based on SSB according to the first period, and switch to the target cell;

the processing module is specifically configured to:

7. The handover apparatus of claim 6, wherein the SMTC of the target cell comprises a measurement period, an offset location, and a duration.

8. The handover apparatus according to claim 6 or 7, wherein the receiving module is further configured to receive system information sent by a network device, and the system information carries the SMTC of the target cell.

9. The switching device of claim 6, wherein the processing module is further configured to:

10. The switching device of claim 6, wherein the maximum time interval of the SSB is 20 ms.

11. A terminal device, comprising: memory, processor, receiver and computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of handover of a cell of any of claims 1 to 4.

12. A storage medium, comprising: readable storage medium and computer program for implementing a handover method of a cell according to any of claims 1 to 5.

13. A chip, wherein the chip is applicable to a terminal device, the chip comprising: at least one communication interface, at least one processor coupled with a memory via the communication interface, the processor invoking a computer program stored in the memory to perform the handover method of a cell of any of claims 1 to 5.