CN114466422B

CN114466422B - Cell access method, device, terminal equipment and storage medium

Info

Publication number: CN114466422B
Application number: CN202210372036.7A
Authority: CN
Inventors: 吴诚; 张子玥; 江德祥
Original assignee: Shenzhen Xiaomi Communication Technology Co ltd; Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Shenzhen Xiaomi Communication Technology Co ltd; Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-08
Anticipated expiration: 2042-04-11
Also published as: CN114466422A

Abstract

The present disclosure provides a cell access method, an apparatus, a terminal device and a storage medium, wherein the method is applied to a terminal device at least including a first communication card and a second communication card, and includes: under the condition that the first communication card resides in the first cell, cell search is carried out based on the second communication card so as to determine a second cell of which the communication time delay is less than or equal to a set time length threshold; the access of the second cell is initiated based on the first communication card so as to be switched from the first cell to the second cell and reside in the second cell, therefore, under the condition that the communication of the first communication card is not influenced, the cell search is carried out through the second communication card, the communication time delay measurement is carried out on the searched cell so as to determine the second cell with the communication time delay smaller than or equal to the set time length threshold value, the first communication card can carry out the cell switching and the residence based on the cell search result of the second communication card, and the flexibility and the applicability of the cell switching are improved.

Description

Cell access method, device, terminal equipment and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a cell access method, an apparatus, a terminal device, and a storage medium.

Background

Currently, with the development of communication technology, dual card terminal devices are commonly used. The dual card terminal device refers to a terminal device equipped with two communication cards (a main card and a sub card) at the same time.

In the process of accessing the dual-card terminal equipment into the cell, each communication card in the terminal equipment is only responsible for the cell searching action of the terminal equipment, and each communication card can only carry out data service transmission on the cell searched by the communication card.

Disclosure of Invention

The present disclosure is directed to solving, at least to some extent, one of the technical problems in the above-described technology.

Therefore, the present disclosure aims to provide a cell access method, an apparatus, a terminal device, and a storage medium, so as to implement cell search through a second communication card without affecting communication of a first communication card, and perform communication delay measurement on a searched cell, so as to determine a second cell with a communication delay less than or equal to a set time threshold, so that the first communication card can perform cell handover and cell residence based on a cell search result of the second communication card, thereby improving flexibility and applicability of cell handover.

To achieve the above object, an embodiment of a first aspect of the present disclosure provides a cell access method applied to a terminal device including at least a first communication card and a second communication card, including: under the condition that the first communication card resides in the first cell, cell search is carried out based on the second communication card so as to determine a second cell of which the communication time delay is less than or equal to a set time length threshold; and initiating access of a second cell based on the first communication card to switch from the first cell to the second cell and to camp on the second cell.

The cell access method of the embodiment of the disclosure is applied to a terminal device at least comprising a first communication card and a second communication card, and under the condition that the first communication card resides in a first cell, cell search is performed based on the second communication card to determine a second cell of which the communication time delay is less than or equal to a set time threshold; the access of the second cell is initiated based on the first communication card so as to be switched from the first cell to the second cell and reside in the second cell, therefore, under the condition that the communication of the first communication card is not influenced, the cell search is carried out through the second communication card, the communication time delay measurement is carried out on the searched cell so as to determine the second cell with the communication time delay smaller than or equal to the set time length threshold value, the first communication card can carry out the cell switching and the residence based on the cell search result of the second communication card, and the flexibility and the applicability of the cell switching are improved.

In order to achieve the above object, a second embodiment of the present disclosure provides a cell access apparatus, applied to a terminal device including at least a first communication card and a second communication card, including: the searching module is used for searching the cell based on the second communication card under the condition that the first communication card resides in the first cell so as to determine the second cell of which the communication time delay is less than or equal to the set time length threshold; and the processing module is used for initiating the access of the second cell based on the first communication card so as to switch from the first cell to the second cell and reside in the second cell.

To achieve the above object, an embodiment of a third aspect of the present disclosure provides a terminal device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the first aspect of the present disclosure.

In order to achieve the above object, a fourth aspect of the present disclosure provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method of the first aspect of the present disclosure.

To achieve the above object, a fifth aspect of the present disclosure provides a computer program product, where when executed by an instruction processor, the method according to the first aspect of the present disclosure is implemented.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a dual-card-capable terminal device according to an embodiment of the present disclosure;

fig. 3 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 6 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 7 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a cell access apparatus according to an embodiment of the present disclosure;

fig. 9 is a block diagram illustrating a terminal device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure.

At present, a terminal device only supports a DSDS (dual card dual standby) mode, and when one card is in a connected state, another card cannot enter the connected state due to the absence of Radio Frequency (RF) resources. With the development of the technology, a future terminal device will support a DR-DSDA (dual card duplex) mode, and in this mode, a combination of a 5G independent networking (SA for short) and a Long Term Evolution (LTE for short) technology can support two communication cards in a connected state, that is, both the dual communication cards can perform service interaction.

However, in the current network selection scheme, each communication card in the terminal device is only responsible for its own cell search behavior, and the search result of the cell is only used for its own cell search control, and this network selection mode is only suitable for the terminal device of the DSDS, and in this network selection mode, when the communication card determines that the resident cell is not suitable for data service transmission, it is not possible to keep service continuity, and at the same time, it reselects the cell suitable for data transmission, which reduces the efficiency of data transmission.

In order to solve the above problem, the present disclosure provides a cell access method, an apparatus, a terminal device, and a storage medium.

A cell access method, an apparatus, a terminal device, and a storage medium according to embodiments of the present disclosure are described below with reference to the accompanying drawings.

Fig. 1 is a flowchart illustrating a cell access method according to an embodiment of the present disclosure. The cell access method is applicable to terminal devices including at least a first communication card and a second communication card (e.g., terminal devices supporting DR-DSDA).

As shown in fig. 1, the cell access method may include the following steps:

step 101, under the condition that the first communication card resides in the first cell, performing cell search based on the second communication card to determine a second cell with a communication delay less than or equal to a set time length threshold.

In the embodiment of the present disclosure, when the first communication card resides in the first cell, that is, when the communication of the first communication card is not affected, the second communication card may perform cell search, for each searched cell, the second communication card may initiate access to the cell, perform data delay measurement on the accessed cell, acquire a communication delay, and compare the acquired communication delay with a set duration threshold (e.g., 100 ms), so as to determine the second cell in which the communication delay is less than or equal to the set duration threshold. In order to improve the accuracy of the communication delay, the second communication card may perform multiple data delay measurements on the searched cell, and use an average value of the multiple data delays as the communication delay of the searched cell.

In addition, it should be noted that the first communication card may be a main card of the terminal device, the second communication card may be a sub-card of the terminal device, and the first communication card and the second communication card may correspond to the same communication carrier. For example, as shown in fig. 2, the terminal device has a primary card and a secondary card, wherein the primary card may be a first communication card, and the secondary card may be a second communication card. The first communication card and the second communication card may be SIM (Subscriber Identity Module) cards, or other data cards, and the like.

And 102, initiating access of a second cell based on the first communication card so as to switch from the first cell to the second cell and reside in the second cell.

Furthermore, the first communication card may initiate access of the second cell to enable the first communication card to be switched from the first cell to the second cell and to camp on the second cell.

In summary, under the condition that the communication of the first communication card is not affected, the second communication card is used for cell search, and the communication delay measurement is performed on the searched cell, so as to determine the second cell with the communication delay less than or equal to the set time threshold, so that the first communication card can perform cell switching and residence based on the cell search result of the second communication card, and the flexibility and applicability of cell switching are improved.

In order to accurately obtain a second cell with a communication delay less than or equal to a set time threshold, as shown in fig. 3, fig. 3 is a schematic flow diagram of a cell access method provided in an embodiment of the present disclosure, and as an example, when the communication delay of a first cell is greater than the set time threshold, a second communication card performs cell search to obtain the second cell with a communication delay less than or equal to the set time threshold, where the embodiment shown in fig. 3 may include the following steps:

step 301, when the first communication card resides in the first cell, obtaining the communication delay of the first cell where the first communication card resides.

As a possible implementation manner, when the first communication card resides in the first cell, a round-trip duration of a connection between the terminal device and the access network device of the first cell through the first communication card, that is, a difference between a data sending time and a time when the confirmation is received may be obtained, for example, the terminal device sends data to the access network device of the first cell through the first communication card and records the time when the data is sent, and further, the access network device may send corresponding response data to the terminal device when receiving the data sent by the terminal device. And the difference value between the time when the terminal equipment receives the response data and the time when the terminal equipment sends the data is used as the communication time delay of the first cell where the first communication card resides. It will be appreciated that the access network device is a base station.

Step 302, under the condition that the communication delay of the first cell is greater than the set time length threshold, performing cell search based on the second communication card to obtain a second cell with the communication delay less than or equal to the set time length threshold.

As a possible implementation manner of the embodiment of the present disclosure, when the communication delay of the first cell is greater than the set duration threshold, the second communication card may be controlled to perform cell search, and for each searched cell, the second communication card may be controlled to camp on the cell, so as to determine the second cell whose communication delay is less than or equal to the set duration threshold. The second communication card may be controlled to search for a cell with a Radio Access Technology (RAT) corresponding to LTE or SA, where the second cell may be a cell corresponding to LTE or a cell corresponding to SA. It is understood that RATs may be two types with the highest network standard, such as LTE and SA, which terminal devices can access.

Step 303, initiating access of the second cell based on the first communication card to switch from the first cell to the second cell, and residing in the second cell.

It should be noted that the execution process of step 303 may be implemented by any one of the embodiments of the present disclosure, and this is not limited by the embodiments of the present disclosure and is not described again.

In summary, the communication delay of the first cell in which the first communication card resides is obtained; under the condition that the communication time delay of the first cell is larger than the set time length threshold, cell search is carried out based on the second communication card to obtain a second cell with the communication time delay smaller than or equal to the set time length threshold, therefore, under the condition that the communication time delay of the first cell is larger than the set time length threshold, cell search is carried out based on the second communication card and communication time delay measurement is carried out, the second cell with the communication time delay smaller than or equal to the set time length threshold can be accurately obtained, the first communication card can reselect a cell suitable for data transmission based on the cell search result of the second communication card, and the data transmission efficiency is improved.

In order to accurately obtain the second cell with the communication delay less than or equal to the set duration threshold, as shown in fig. 4, fig. 4 is a schematic flowchart of a cell access method provided in an embodiment of the present disclosure, and as another example, the second communication card may be controlled to search for a cell corresponding to the RAT supported by the first communication card to determine the second cell with the communication delay less than or equal to the set duration threshold, where the embodiment shown in fig. 4 may include the following steps:

step 401, obtaining a target radio access type RAT supported by a first communication card and a second communication card.

In the embodiment of the disclosure, the target RAT supported by the first communication card and the target RAT supported by the second communication card may be determined according to the target radio access type values registered by the first communication card and the second communication card. It should be noted that the target RAT may be LTE or SA.

Step 402, under the condition that the first communication card resides in the first cell, searching a cell corresponding to the target RAT based on the second communication card to determine a second cell with a communication delay less than or equal to a set time threshold.

As an example, when the target RAT simultaneously supported by the first communication card and the second communication card is LTE, the second communication card may be controlled to search for a cell corresponding to LTE under the condition that the first communication card resides in the first cell, and perform communication delay measurement on the searched cell corresponding to LTE to determine the second cell with the communication delay less than or equal to the set duration threshold.

As another example, when the target RAT simultaneously supported by the first communication card and the second communication card is SA, the second communication card may be controlled to search for a cell corresponding to SA when the first communication card resides in the first cell, and perform communication delay determination on the searched cell corresponding to SA to determine the second cell whose communication delay is less than or equal to the set duration threshold.

As another example, the target RATs include a first RAT type and a second RAT type, and the first RAT type and the second RAT type are two types with the highest network standard and are currently accessible to the terminal device. For example, the target RAT includes: LTE and SA; for example, the target RAT supported by the first communication card is LTE or SA, and the target RAT supported by the second communication card is LTE or SA; the second communication card may be controlled to search for a cell corresponding to the first RAT type (e.g., a cell corresponding to LTE, or the first RAT type may be a type corresponding to the first cell, if the first cell is an SA cell, the first RAT type is SA), and the searched cell corresponding to the first RAT type is measured for communication time delay, and in response to that a second cell with the communication time delay smaller than or equal to a set time length threshold value is not searched in the cell corresponding to the first RAT type, searching a cell corresponding to the second RAT type (for example, a cell corresponding to SA, or when the first RAT type is SA, the second RAT type is LTE) based on the second communication card, and performing communication delay measurement on the searched cell corresponding to the second RAT type, and determining a second cell with the communication time delay smaller than or equal to the set time length threshold in the searched cells corresponding to the second RAT type. It should be noted that when a second cell with a communication delay smaller than or equal to the set time length threshold is not searched in the searched cell corresponding to the second RAT type, the second communication card is controlled to stop searching.

And step 403, initiating access of the second cell based on the first communication card to switch from the first cell to the second cell and reside in the second cell.

It should be noted that the execution process of step 403 may be implemented by any one of the embodiments of the present disclosure, and this is not limited by the embodiments of the present disclosure and is not described again.

In summary, by obtaining the target radio access type RAT supported by the first communication card, and under the condition that the first communication card resides in the first cell, searching the cell corresponding to the target RAT based on the second communication card to determine the second cell with the communication delay less than or equal to the set time length threshold, the second cell with the communication delay less than or equal to the set time length threshold can be accurately determined by searching the cell corresponding to the target RAT based on the second communication card and performing communication delay measurement.

In order to accurately determine a second cell with a communication delay smaller than or equal to a set duration threshold in at least one candidate cell corresponding to a target RAT searched based on a second communication card, as shown in fig. 5, fig. 5 is a flowchart of a cell access method provided in an embodiment of the present disclosure, a cell search may be performed in a frequency domain range corresponding to the target RAT to obtain at least one candidate cell, and a second cell with a communication delay smaller than or equal to the set duration threshold may be determined from the at least one candidate cell, where the embodiment shown in fig. 5 may include the following steps:

step 501, a target wireless access type RAT supported by a first communication card and a second communication card is obtained.

Step 502, under the condition that the first communication card resides in the first cell, performing cell search in a frequency domain range corresponding to the target RAT based on the second communication card to obtain at least one candidate cell.

As a possible implementation manner of the embodiment of the disclosure, the second communication card may be controlled to perform cell search in a frequency domain range (e.g., full frequency band) corresponding to the target RAT, so as to obtain at least one candidate cell.

Step 503, initiating access to each candidate cell based on the second communication card, and performing communication delay measurement on the accessed candidate cell.

Furthermore, for each candidate cell, the second communication card can be controlled to initiate access to each candidate cell, and the communication delay of the accessed candidate cell is measured to obtain the communication delay of the accessed candidate cell.

As a possible implementation manner of the embodiment of the present disclosure, access to each candidate cell is initiated based on the second communication card; sending detection data packets with preset times to access network equipment of an accessed target candidate cell; and determining the communication time delay of the target candidate cell according to the response time delay mean value of the detection data packet sent by the preset times.

That is to say, based on the second communication card initiating access to each candidate cell, for any target candidate cell accessed by the second communication card, the second communication card may be controlled to send a detection data packet for a preset number of times to the access network device of the target candidate cell, and determine a corresponding response delay mean value according to a response delay of the detection data packet for the preset number of times, and use the response delay mean value as a communication delay of the target candidate cell, where the number of preset times may be set according to specific needs, which is not specifically limited by the embodiments of the present disclosure.

And step 504, determining a second cell with the communication delay less than or equal to the set time length threshold from the at least one candidate cell.

In the embodiment of the disclosure, access to each candidate cell is initiated based on the second communication card, the communication delay of the accessed candidate cell is measured until the candidate cell with the communication delay smaller than or equal to the set time threshold is measured, and the candidate cell is determined as the second cell with the communication delay smaller than or equal to the set time threshold.

And 505, initiating access of a second cell based on the first communication card to switch from the first cell to the second cell and reside in the second cell.

It should be noted that the execution process of step 501 and step 505 may be implemented by any one of the embodiments of the present disclosure, and the embodiments of the present disclosure do not limit this, and are not described again.

In summary, under the condition that the first communication card resides in the first cell, cell search is performed in a frequency domain range corresponding to the target RAT based on the second communication card, so as to obtain at least one candidate cell; initiating access to each candidate cell based on a second communication card, and measuring communication delay of the accessed candidate cells; and determining a second cell with the communication delay less than or equal to the set time length threshold from the at least one candidate cell, so that the second cell with the communication delay less than or equal to the set time length threshold can be accurately determined from the at least one candidate cell by accessing each candidate cell and measuring the communication delay of the accessed candidate cells.

To illustrate how the first communication card implements access to the second cell, as shown in fig. 6, fig. 6 is a schematic flow chart of a cell access method provided in an embodiment of the present disclosure, in the embodiment of the present disclosure, the second communication card may be controlled to initiate access to the second cell according to a frequency point and a physical cell identifier of the second cell, and the embodiment shown in fig. 6 may include the following steps:

step 601, under the condition that the first communication card resides in the first cell, performing cell search based on the second communication card to determine a second cell with a communication delay less than or equal to a set time threshold.

Step 602, according to the frequency point and the physical layer cell identity PCI of the second cell, initiating access to the second cell based on the first communication card, so as to switch from the first cell to the second cell and reside in the second cell.

In the embodiment of the disclosure, after a second Cell with a communication delay less than or equal to a set duration threshold is determined, in order to fully utilize a characteristic that a DR-DSDA dual-communication card can perform service interaction to implement collaborative network selection of a first communication card and a second communication card, a frequency point and a Physical Cell Identity (PCI) of the second Cell may be sent to the first communication card, so that the first communication card may be controlled to initiate access to the second Cell according to the frequency point and the PCI of the second Cell, so that the first communication card is switched from the first Cell to the second Cell and resides in the second Cell. The physical cell identifier is a radio signal for distinguishing different cells.

In summary, the access to the second cell is initiated based on the first communication card according to the frequency point and the PCI of the second cell, so as to switch from the first cell to the second cell and reside in the second cell, and therefore, the access to the second cell can be accurately initiated based on the first communication card according to the frequency point and the PCI of the second cell, and therefore, the first communication card can be switched from the first cell to the second cell and reside in the second cell.

In order to more clearly illustrate the above embodiments, the description will now be made by way of example.

For example, as shown in fig. 7, fig. 7 is a schematic flowchart of a cell access method according to an embodiment of the present disclosure, where the flow of the cell access method may be as follows:

1. when the primary card and the secondary card are both cards of the same operator and the registered RAT is LTE or SA (RAT supported by DR-DSDA), entering the process of the scheme;

2. when the data delay of the main card is higher, triggering a self-defining instruction nds _ search = True, and sending the current RAT and nds _ search to the auxiliary card to trigger the auxiliary card to execute network search and subsequent communication delay test, and entering step 3;

3. and the secondary card starts to search the network according to the corresponding RAT value. The secondary card can scan the corresponding RAT in full frequency band in network searching, and the step 4 is carried out;

4. the auxiliary card carries out sequential access to all the cells meeting the access requirements, and the step 5 is carried out;

5. the delay is calculated by averaging over 10 internet packet explorer (ping) packets (Round Trip Time, RTT). When the average RTT is less than 100ms, the cell is considered to be a good cell. And the frequency point and the PCI of the cell are notified to the main card, and the process proceeds to step 8. Otherwise, entering step 6;

6. when the requirement of RTT is not satisfied, continuing accessing the next cell, and entering step 7;

7. if the cells of the RAT do not meet the access requirement, setting and selecting the RAT without network searching, and entering step 3. If the cells of both RATs do not meet the requirements, terminating;

8. the main card immediately initiates access according to the frequency point and the PCI and tries to stay in the cell.

The cell access method of the disclosed embodiment is applied to a terminal device at least comprising a first communication card and a second communication card, by performing a cell search based on a second communication card while a first communication card resides in a first cell, to determine a second cell with a communication delay less than or equal to a set duration threshold, initiate access of the second cell based on the first communication card to switch from the first cell to the second cell and camp on the second cell, whereby, under the condition of not influencing the communication of the first communication card, the second communication card is used for searching the cell and measuring the communication time delay of the searched cell, and determining the second cell with the communication time delay less than or equal to the set time length threshold value, so that the first communication card can perform cell switching and residence based on the cell search result of the second communication card, and the flexibility and the applicability of cell switching are improved.

In order to implement the above embodiments, the present disclosure further provides a cell access apparatus.

Fig. 8 is a schematic structural diagram of a cell access apparatus according to an embodiment of the present disclosure. The cell access device is applicable to terminal equipment comprising a first communication card and a second communication card.

As shown in fig. 8, the cell access apparatus 800 includes: a search module 810 and a processing module 820.

The searching module 810 is configured to, when the first communication card resides in the first cell, perform cell search based on the second communication card to determine a second cell whose communication delay is less than or equal to the set duration threshold; a processing module 820, configured to initiate access of a second cell based on the first communication card, so as to switch from the first cell to the second cell, and camp on the second cell.

As a possible implementation manner of the embodiment of the present disclosure, the searching module 810 is further configured to: under the condition that the first communication card resides in the first cell, acquiring the communication time delay of the first cell in which the first communication card resides; and under the condition that the communication time delay of the first cell is greater than the set time length threshold, carrying out cell search based on the second communication card to obtain a second cell of which the communication time delay is less than or equal to the set time length threshold.

As a possible implementation manner of the embodiment of the present disclosure, the searching module 810 is further configured to: acquiring a target wireless access type RAT supported by a first communication card and a second communication card; under the condition that the first communication card resides in the first cell, searching a cell corresponding to the target RAT based on the second communication card to determine a second cell with the communication time delay smaller than or equal to the set time length threshold.

As a possible implementation manner of the embodiment of the present disclosure, the searching module 810 is further configured to: under the condition that the first communication card resides in the first cell, performing cell search in a frequency domain range corresponding to the target RAT based on the second communication card to obtain at least one candidate cell; initiating access to each candidate cell based on a second communication card, and measuring communication delay of the accessed candidate cells; and determining a second cell of which the communication time delay is less than or equal to a set time length threshold from the at least one candidate cell.

As a possible implementation manner of the embodiment of the present disclosure, the searching module 810 is further configured to: initiating access to each candidate cell based on a second communication card; sending detection data packets with preset times to access network equipment of an accessed target candidate cell; and determining the communication time delay of the target candidate cell according to the average value of the response time delay of the detection data packet sent each time.

As a possible implementation of the embodiment of the present disclosure, the target RAT includes a first RAT type and a second RAT type; a search module 810, further configured to: under the condition that the first communication card resides in the first cell, searching a cell corresponding to the first RAT type based on the second communication card; and in response to that a second cell with the communication delay smaller than or equal to the set time length threshold value is not searched in the cells corresponding to the first RAT type, searching the cells corresponding to the second RAT type based on the second communication card to determine the second cell with the communication delay smaller than or equal to the set time length threshold value.

As a possible implementation manner of the embodiment of the present disclosure, the processing module 820 is further configured to: and initiating access to the second cell based on the first communication card according to the frequency point and the physical layer cell identity (PCI) of the second cell so as to switch from the first cell to the second cell and reside in the second cell.

It should be noted that the foregoing explanation on the embodiment of the cell access method is also applicable to the cell access apparatus of this embodiment, and is not repeated here.

The cell access device of the disclosed embodiment is applied to a terminal device at least comprising a first communication card and a second communication card, by performing a cell search based on a second communication card while a first communication card resides in a first cell, to determine a second cell with a communication delay less than or equal to a set duration threshold, initiate access of the second cell based on the first communication card to switch from the first cell to the second cell and camp on the second cell, whereby, under the condition of not influencing the communication of the first communication card, the second communication card is used for searching the cell and measuring the communication time delay of the searched cell, and determining the second cell with the communication time delay less than or equal to the set time length threshold value, so that the first communication card can perform cell switching and residence based on the cell search result of the second communication card, and the flexibility and the applicability of cell switching are improved.

In order to implement the foregoing embodiment, the present disclosure further provides a terminal device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the cell access method according to the embodiments of fig. 1 to 7 of the present disclosure.

To implement the above embodiments, the present disclosure also proposes a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the cell access method described in the embodiments of fig. 1 to 7.

In order to implement the above embodiments, the present disclosure further provides a computer program product, which when executed by an instruction processor in the computer program product, implements the cell access method described in the embodiments of fig. 1 to 7.

Fig. 9 is a block diagram illustrating a terminal device according to an example embodiment. For example, the terminal device 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to fig. 9, terminal device 900 may include one or more of the following components: a processing component 902, a memory 904, a power component 906, a multimedia component 908, an audio component 910, an input/output (I/O) interface 912, a sensor component 914, and a communications component 916.

The processing component 902 generally controls overall operation of the terminal device 900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 902 may include one or more processors 920 to execute instructions to perform all or a portion of the steps of the methods described above. Further, processing component 902 can include one or more modules that facilitate interaction between processing component 902 and other components. For example, the processing component 902 can include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.

Memory 904 is configured to store various types of data to support operation at terminal device 900. Examples of such data include instructions for any application or method operating on terminal device 900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 904 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power component 906 provides power to the various components of the terminal device 900. Power components 906 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal device 900.

The multimedia components 908 comprise a screen providing an output interface between the terminal device 900 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal device 900 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 910 is configured to output and/or input audio signals. For example, the audio component 910 includes a Microphone (MIC) configured to receive external audio signals when the terminal apparatus 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 904 or transmitted via the communication component 916. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.

I/O interface 912 provides an interface between processing component 902 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 914 includes one or more sensors for providing status evaluation of various aspects for the terminal device 900. For example, sensor component 914 can detect an open/closed state of terminal device 900, a relative positioning of components such as a display and keypad of terminal device 900, sensor component 914 can also detect a change in position of terminal device 900 or a component of terminal device 900, the presence or absence of user contact with terminal device 900, orientation or acceleration/deceleration of terminal device 900, and a change in temperature of terminal device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 916 is configured to facilitate communication between the terminal device 900 and other devices in a wired or wireless manner. Terminal device 900 may access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 916 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal device 900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 904 comprising instructions, executable by processor 920 of terminal device 900 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.

The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried out in the method of implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims

1. A cell access method applied to a terminal device including at least a first communication card and a second communication card, the method comprising:

under the condition that the first communication card resides in a first cell, performing cell search based on the second communication card to determine a second cell with communication delay less than or equal to a set time threshold;

initiating access of the second cell based on the first communication card to switch from the first cell to the second cell and camp on the second cell;

wherein, when the first communication card resides in a first cell, performing cell search based on the second communication card to determine a second cell with a communication delay less than or equal to a set duration threshold, includes:

under the condition that the first communication card resides in a first cell, acquiring the communication time delay of the first cell in which the first communication card resides;

under the condition that the communication time delay of the first cell is larger than a set time length threshold, performing cell search based on the second communication card to obtain a second cell of which the communication time delay is smaller than or equal to the set time length threshold; and the second communication card performs multiple data time delay measurement on the searched cell, and takes the average value of the multiple measured data time delays as the communication time delay of the searched cell.

2. The method of claim 1, wherein the performing a cell search based on the second communication card to determine a second cell with a communication delay less than or equal to a set duration threshold when the first communication card resides in a first cell comprises:

acquiring a target wireless access type (RAT) supported by the first communication card and the second communication card;

and under the condition that the first communication card resides in a first cell, searching a cell corresponding to the target RAT based on the second communication card to determine a second cell of which the communication time delay is less than or equal to a set time length threshold.

3. The method of claim 2, wherein, in the case that the first communication card resides in a first cell, searching for a cell corresponding to the target RAT based on the second communication card to determine a second cell with a communication delay less than or equal to a set duration threshold comprises:

under the condition that the first communication card resides in a first cell, performing cell search in a frequency domain range corresponding to the target RAT based on the second communication card to obtain at least one candidate cell;

initiating access to each candidate cell based on the second communication card, and measuring communication delay of the accessed candidate cells;

and determining a second cell of which the communication time delay is less than or equal to a set time length threshold from the at least one candidate cell.

4. The method of claim 3, wherein the measuring of communication delay for the accessed candidate cells based on the second communication card initiating access to each of the candidate cells comprises:

initiating access to each of the candidate cells based on the second communication card;

sending detection data packets with preset times to access network equipment of an accessed target candidate cell;

and determining the communication time delay of the target candidate cell according to the response time delay mean value of the detection data packet sent by preset times.

5. The method of claim 2, wherein the target RAT comprises a first RAT type and a second RAT type;

the searching, when the first communication card resides in a first cell, for a cell corresponding to the target RAT based on the second communication card to determine a second cell with a communication delay less than or equal to a set duration threshold, includes:

searching for a cell corresponding to the first RAT type based on the second communication card when the first communication card resides in a first cell;

and in response to that the second cell with the communication delay smaller than or equal to the set time length threshold value is not searched in the cell corresponding to the first RAT type, searching the cell corresponding to the second RAT type based on the second communication card to determine the second cell with the communication delay smaller than or equal to the set time length threshold value.

6. The method of any of claims 1-5, wherein the initiating access of the second cell based on the first communication card to handover from the first cell to the second cell and camp on the second cell comprises:

and initiating access to the second cell based on the first communication card according to the frequency point and the physical layer cell identity (PCI) of the second cell so as to switch from the first cell to the second cell and reside in the second cell.

7. A cell access apparatus, applied to a terminal device including at least a first communication card and a second communication card, the apparatus comprising:

the searching module is used for searching the cell based on the second communication card under the condition that the first communication card resides in the first cell so as to determine the second cell of which the communication time delay is less than or equal to the set time length threshold;

a processing module, configured to initiate access of the second cell based on the first communication card, to switch from the first cell to the second cell, and to camp on the second cell;

the search module is further configured to:

8. The apparatus of claim 7, wherein the search module is further configured to:

acquiring a target Radio Access Type (RAT) supported by the first communication card and the second communication card;

9. The apparatus of claim 8, wherein the search module is further configured to:

10. The apparatus of claim 9, wherein the search module is further configured to:

11. The apparatus of claim 9, wherein the target RAT comprises a first RAT type and a second RAT type; the search module is further configured to:

the first communication card is configured to search for a cell corresponding to the first RAT type based on the second communication card when the first communication card resides in a first cell;

and in response to that the second cell with the communication delay smaller than or equal to the set time length threshold is not searched in the cell corresponding to the first RAT type, searching the cell corresponding to the second RAT type based on the second communication card to determine the second cell with the communication delay smaller than or equal to the set time length threshold.

12. The apparatus of any of claims 7-11, wherein the processing module is further configured to:

13. A terminal device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the cell access method of any one of claims 1-6.

14. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the cell access method according to any one of claims 1-6.