CN112272392A

CN112272392A - Cell residence method, device, terminal equipment and storage medium

Info

Publication number: CN112272392A
Application number: CN202011158176.1A
Authority: CN
Inventors: 刘宇
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-01-26
Anticipated expiration: 2040-10-26
Also published as: CN112272392B

Abstract

The application discloses a cell residence method, a cell residence device, terminal equipment and a storage medium, wherein the method is applied to the terminal equipment, the terminal equipment has a dual-connection function, and the method comprises the following steps: filtering the LTE cell to be resided based on the first cell list, and determining a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells; and residing in the target LTE cell so as to enable the terminal equipment to access the 5G network and enable the terminal equipment to successfully enter a dual-connection mode. Therefore, when the terminal equipment performs cell selection, cell reselection, cell redirection or other operations, the blacklist cell can be directly filtered according to the LTE cell blacklist, and the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the fact that the terminal resides in the blacklist cell is avoided.

Description

Cell residence method, device, terminal equipment and storage medium

Technical Field

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

Background

New Radio (NR) defines two types of networks, namely, an independent networking (SA) network and a Non-independent Networking (NSA) network. These two types of 5G networks coexist with Long Term Evolution (LTE) networks for a Long period and are associated with each other.

In the non-independent networking, a terminal has an endec function, namely, a Terrestrial Radio Access (EUTRA) and NR Dual Connectivity (endec) function, which is called Universal Mobile Telecommunications System (Universal Mobile Telecommunications System) of UMTS, and can communicate with both an LTE base station and an NR base station in a connected state.

With the gradual progress of 5G NR construction, in an access side network, a plurality of operators access in a mode of sharing a cell by LTE. The sharing cell constructed by the operator adopts the following strategies: (1) the terminal of the operator can stay in the cell and obtain normal service; (2) for terminals of other operators, the Cell is only used as an anchor Cell of the NSA network to add a Secondary Cell Group (SCG) to the terminal, and if the terminal cannot add the SCG and stays in the Cell, the network allocates a small amount of uplink and downlink resources to the terminal, which cannot meet the requirements of data services (such as web page browsing, game playing, video playing, etc.) of the terminal, and affects the user experience of the terminal. The current technical solution has no optimization solution for the situation.

Disclosure of Invention

In order to solve the foregoing technical problem, embodiments of the present application desirably provide a cell camping method, an apparatus, a terminal device, and a storage medium.

The technical scheme of the application is realized as follows:

in a first aspect, a cell camping method is provided, which is applied to a terminal device, where the terminal device has a dual connectivity function, and the method includes:

filtering the LTE cell to be resided based on the first cell list, and determining a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells;

and residing in the target LTE cell so that the terminal equipment can access the 5G network.

In a second aspect, an apparatus for cell camping is provided, the apparatus comprising:

the filtering unit is used for filtering the LTE cell to be resided based on the first cell list and determining a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells;

and the residing unit is used for residing in the target LTE cell so as to enable the terminal equipment to access the 5G network.

In a third aspect, a terminal device is provided, where the terminal device includes: a processor and a memory configured to store a computer program capable of running on the processor,

wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.

In a fourth aspect, a computer storage medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the aforementioned method.

The embodiment of the application provides a cell residence method, a cell residence device, terminal equipment and a storage medium, wherein the method is applied to the terminal equipment, the terminal equipment has a dual-connection function, and the method comprises the following steps: filtering the LTE cell to be resided based on the first cell list, and determining a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells; and residing in the target LTE cell so that the terminal equipment can access the 5G network. Therefore, when the terminal equipment performs cell selection, cell reselection, cell redirection or other operations, the blacklist cell can be directly filtered according to the first cell list (which can also be understood as an LTE cell blacklist), and the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the terminal residing in the blacklist cell is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a double-link frame;

fig. 2 is a first flowchart of a cell camping method according to an embodiment of the present application;

fig. 3 is a second flowchart of a cell camping method in the embodiment of the present application;

fig. 4 is a third flowchart of a cell camping method in the embodiment of the present application;

fig. 5 is a fourth flowchart illustrating a cell camping method according to an embodiment of the present application;

fig. 6 is a fifth flowchart illustrating a cell camping method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a cell camping apparatus in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device in the embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

The embodiment of the present application provides a cell residence method, which is applied to a terminal device (also referred to as a "terminal" for short) having a dual connectivity function, fig. 1 is a schematic view of a composition structure of a dual connectivity framework, as shown in fig. 1, a terminal 101 may establish an air interface connection with a main base station 102 (also referred to as a main node), so as to implement communication with the main base station 102; the terminal 101 may also establish an air interface connection with the secondary base station 103 (also referred to as a secondary node), so as to implement communication with the secondary base station 103; the terminal 101 may also establish air interface connections with the main base station 102 and the secondary base station 103 at the same time, so as to simultaneously implement communication with the main base station 102 and the secondary base station 103. In the dual connectivity mode, the terminal 101 establishes two connections with the primary base station 102 and the secondary base station 103 at the same time, where the primary base station 102 is mainly responsible for signaling transmission and the secondary base station 103 is responsible for data transmission. The cells under the Master base station 102 form a Master Cell Group (MCG), the cells under the Secondary base station 103 form a Secondary Cell Group (SCG), and the technical scheme of the embodiment of the present application is mainly directed to a terminal in a dual connectivity mode.

In the embodiment of the application, the dual connection mode is an EN-DC mode or a next generation EN-DC (next generation EN-DC, NGEN-DC) mode, in this case, the main base station is an LTE base station, the auxiliary base station is an NR base station, and the terminal communicates with both the LTE base station and the NR base station.

In a specific implementation, the deployment manner of the primary base station and the secondary base station may be co-base deployment (for example, the NR base station and the LTE base station may be disposed on one entity device), or may also be non-co-base deployment (for example, the NR base station and the LTE base station may be disposed on different entity devices), which is not limited in this application. Here, the LTE base station may be referred to as an evolved Node B (eNB), and the NR base station may be referred to as a next generation base station (gNB). It should be noted that the present application may not be limited to the correlation between the coverage areas of the primary base station and the secondary base station, for example, the primary base station and the secondary base station may overlap.

For a specific type of the terminal 101, the present application may not be limited, and it may be any user equipment that supports the above dual connection mode, for example, a smart phone, a personal computer, a notebook computer, a tablet computer, a portable wearable device, and the like.

The following describes in detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems by embodiments and with reference to the drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a first flowchart of a cell camping method in the embodiment of the present application, and as shown in fig. 2, the method may specifically include:

step 201: filtering the LTE cell to be resided based on the first cell list, and determining a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells;

here, the first cell list may be understood as an LTE cell blacklist, where the LTE cell blacklist includes at least one LTE cell (abbreviated as a blacklisted cell), and when a terminal resides in the blacklisted cell, the terminal cannot be normally added and reside in a 5G cell, and the LTE cell blacklist may be established and maintained by the terminal itself or by a network side.

In some embodiments, this step is preceded by: acquiring a preset first cell list; and the terminal equipment cannot normally access the 5G network when residing in the LTE cell in the first cell list. Specifically, the obtaining of the first cell list includes: acquiring a first cell list locally stored by terminal equipment; or sending an acquisition request to a network side so that the network side responds to the acquisition request to acquire and issue the first cell list corresponding to the terminal equipment; and receiving the first cell list issued by the network side. Here, the network side determines the LTE cell blacklist corresponding to the terminal according to the location information of the terminal and the information of the operator to which the terminal belongs, and issues the LTE cell blacklist to the terminal.

It should be noted that the operator to which the terminal device belongs refers to an operator to which the SIM card currently used by the terminal device belongs, and when the terminal device includes two or more SIM cards and the operators to which different SIM cards belong are different, different SIM cards may correspond to different LTE blacklist cells, and when the terminal device currently uses a target SIM card to reside in an LTE cell, the LTE blacklist cell corresponding to the target SIM card is obtained.

In some embodiments, the method further comprises: and if the terminal equipment cannot normally access the 5G network after residing in the first LTE cell, adding the first LTE cell into the first cell list.

When the terminal device itself maintains the LTE cell blacklist, the terminal device may maintain the blacklist according to the historical LTE cells in which the terminal device itself resides. Specifically, the filtering method for maintaining the blacklist may include: initializing an LTE cell blacklist; when the terminal equipment resides in a first LTE cell, detecting whether the terminal equipment can normally access a 5G network; and if the terminal equipment cannot normally access the 5G network, adding the first LTE cell into the first cell list.

That is to say, when the LTE cell in which the terminal resides cannot enable the terminal to normally add and reside in the 5G cell, that is, the terminal cannot enter the dual connectivity mode, and if the terminal cannot access the 5G network and remains in the cell, the network will allocate few uplink and downlink resources to the terminal, which cannot meet the data service (such as web page browsing, game playing, video playing, etc.) needs of the terminal. Here, for

It should be noted that "the first LTE cell" is only for illustrating a process of adding one LTE cell to the blacklist, and is not for limiting a certain LTE cell in the blacklist, and all LTE cells in the blacklist may be "the first LTE cell".

In some embodiments, the first LTE cell is an LTE shared cell that is not established by an operator to which the terminal device belongs.

It should be noted that the operator to which the non-terminal device belongs refers to an operator other than the operators to which all the SIM cards used by the terminal device belong.

With the gradual progress of the construction of 5G NR, in the access network, multiple operators access in a LTE cell sharing manner. Some operators build shared cells that employ the following strategies:

(1) the terminal of the operator can stay in the cell and obtain normal service;

(2) for terminals of other operators, the cell is only used as an anchor cell of the NSA network for adding SCG (i.e. accessing the 5G network); if the terminal cannot add the SCG and stays in the cell all the time, the network allocates few uplink and downlink resources to the terminal, and cannot meet the data service (such as browsing web pages, games, videos, and the like) requirements of the terminal. Here, the LTE cell is connected to the terminal as a primary cell, and the primary cell adds a 5G cell to the terminal as a secondary cell.

It can be understood that, when a terminal resides in an LTE shared cell that is not the operator, a problem that the terminal cannot add a 5G cell easily occurs, and therefore, when the terminal resides in such an LTE cell, a user needs to be alerted whether the cell has a problem that the terminal cannot add a 5G cell, and if the cell exists, the LTE cell is directly added to a blacklist so that the terminal cannot reside in the LTE cell for a future period of time, thereby ensuring the network connection quality of the terminal.

In some embodiments, the method specifically comprises: when the terminal equipment resides in the LTE cell, acquiring operator information of the LTE cell; if the operator information represents that the LTE cell is a shared cell which is not established by the operator, determining that the LTE cell is a first LTE cell; and if the operator information represents that the LTE cell is the cell constructed by the operator, directly taking the LTE cell as a target LTE cell.

Further, when the terminal is detected to be resident in the first LTE cell, whether the terminal equipment can normally access the 5G network is detected.

Specifically, the method for detecting whether the terminal device can normally access the 5G network after residing in the first LTE cell includes:

after the terminal equipment enters a connected state, the SCG configuration information of the auxiliary cell group issued by the first LTE cell is not received in a first time period, and the terminal equipment is determined to be incapable of normally accessing the 5G network;

or after the terminal equipment enters a connected state, receiving SCG configuration information issued by the first LTE cell in a second time period, and determining that the terminal equipment cannot normally access the 5G network based on the failure of accessing the 5G network by the SCG configuration information;

or after the terminal equipment is accessed to the 5G network, detecting that the terminal equipment is abnormally disconnected with the 5G network, and determining that the terminal equipment cannot be normally accessed to the 5G network.

In some embodiments, after the terminal connects to the LTE cell, the LTE Network adds an SCG to the terminal by issuing a Radio Resource Control Connection Reconfiguration message (i.e., SCG configuration information) to enable the terminal to access the 5G Network, and the terminal determines the accessible 5G Network according to parameters configured in the RRC Connection Reconfiguration message, where the RRC Connection Reconfiguration message is configured with all details required for accessing the Network, such as a system frame number, a system bandwidth, a Public Land Mobile Network (PLMN), a cell selection and reselection threshold, and the like. Therefore, when the terminal does not receive the RRC connection reconfiguration message or receives the RRC connection reconfiguration message, but fails to access the 5G network due to a configuration parameter error, or a failure to find a corresponding 5G network according to the configuration parameter, or a random access failure, it may be determined that the terminal device cannot normally access the 5G network.

Or, after receiving the RRC connection reconfiguration message, the terminal successfully accesses the 5G network, but detects that the connection between the terminal and the 5G network is unstable, that is, detects that the terminal and the 5G network are abnormally disconnected, and the disconnection is not caused by the terminal itself or the 5G network itself, but is caused by the LTE cell in which the terminal resides. Therefore, such LTE cells can be saved to a blacklist to avoid camping again next time.

Specifically, the detecting that the terminal device is abnormally disconnected from the 5G network includes: and in a third time period, when the terminal equipment is detected to be disconnected from the 5G network and the signal intensity of the 5G network is greater than the intensity threshold value, determining that the terminal equipment is abnormally disconnected from the 5G network.

It should be noted that, after the terminal successfully accesses the 5G network, but it is detected that the terminal is disconnected from the 5G network within a period of time (i.e., a third time period), and when the terminal is disconnected, the signal strength of the 5G network is greater than the strength threshold, which indicates that the terminal is located at a position where the signal coverage of the 5G network is stronger, but the terminal and the 5G network cannot be connected at this moment. Therefore, such LTE cells are saved to the blacklist, avoiding the next re-camping.

In further embodiments, after adding the first LTE cell to the first cell list, the method further comprises: and deleting the first LTE cell from the first cell list when the preset timing time is up.

Specifically, a timer may be added to the cell in the blacklist, the time is counted from when the first LTE cell is added to the blacklist, the cell is deleted from the blacklist after the timer counts time, the deleted cell may be treated as a normal cell, and the blacklist is added when a problem occurs again next time. It should be noted that, an operator may regularly maintain the established cell, or the network service quality of the cell at different times is different due to the influence of the real-time network condition. Therefore, the cell in the blacklist can be released after a period of time by setting the timer, and the condition that the blacklist cell is recovered to be normal but can not participate in the terminal service is avoided.

In other embodiments, the first LTE cell may also be an LTE cell established by an operator to which the terminal device belongs.

It should be noted that, in practical application, an LTE shared cell or an LTE dedicated cell established by an operator to which the terminal belongs may also have a problem that a 5G cell cannot be added to the terminal device, and for a terminal with a strict requirement on dual connection quality, access to such an LTE cell may also be avoided, thereby ensuring reliability of a dual connection mode.

Specifically, when the LTE cell to be camped on is a cell in the blacklist, the cell is ignored, and when the LTE cell to be camped on is not a cell in the first cell list, the cell is taken as the target LTE cell.

It should be noted that the LTE cell to be camped on includes an LTE cell to which the terminal performs cell selection, cell reselection, and cell redirection, and if the located LTE cell is a cell in the blacklist, the cell is ignored, and the next cell is continuously located until a cell that is not in the blacklist is located, and the cell is taken as the target LTE cell.

Step 202: and residing in the target LTE cell so that the terminal equipment can access the 5G network.

It should be noted that, after the terminal resides in the target LTE cell, the target LTE cell adds a 5G cell to the terminal, so that the terminal accesses the 5G network as well as the LTE cell, and enters a dual connectivity mode.

In non-standalone networking, the UE may operate in dual connectivity mode. In dual connectivity mode, the UE communicates with both a primary base station (e.g., an LTE base station) and a secondary base station (e.g., a 5G base station supporting NSA) in a non-independent network. As shown in fig. 1, in the dual connectivity architecture, a main base station 102 and a secondary base station 103 are networked in association, where the main base station is a base station corresponding to an LTE cell, the secondary base station is a base station corresponding to a 5G cell, and the 5G cell may be a neighboring cell of the LTE cell. The terminal can establish air interface connection with the main base station and the auxiliary 5G base station simultaneously, so that communication between the terminal and the main base station and communication between the terminal and the auxiliary base station are achieved simultaneously, and the utilization rate of wireless resources is improved.

By adopting the technical scheme, when the terminal equipment performs cell selection, cell reselection, cell redirection or other operations, the blacklist cell can be directly filtered according to the LTE cell blacklist, so that the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the fact that the terminal resides in the blacklist cell is avoided.

On the basis of the above embodiments of the present application, the implementation processes of cell selection, cell reselection, cell redirection, and cell handover in the present application are further illustrated.

Fig. 3 is a second flowchart of the cell camping method in the embodiment of the present application, and as shown in fig. 3, the method specifically includes:

step 301: acquiring a preset first cell list; when the terminal equipment resides in the LTE cell in the first cell list, the terminal equipment cannot normally access the 5G network;

here, the first cell list may be understood as an LTE cell blacklist, where the LTE cell blacklist includes at least one LTE cell (abbreviated as a blacklisted cell), and when a terminal resides in the blacklisted cell, the terminal cannot be normally added and reside in a 5G cell, and the LTE cell blacklist may be established and maintained by the terminal itself or by a network side. That is, the step may specifically include: acquiring an LTE cell blacklist locally stored by terminal equipment; or sending a request to a network side, and the network side determines an LTE cell blacklist corresponding to the terminal according to the position information of the terminal and the information of the operator to which the terminal belongs and sends the LTE cell blacklist to the terminal. In practical application, the network side may determine the first LTE cell according to the information reported by the terminal and add the first LTE cell to the blacklist.

When the terminal device itself maintains the LTE cell blacklist, the terminal device may maintain the blacklist according to the historical LTE cells in which the terminal device itself resides. Specifically, the method for maintaining the blacklist may include: initializing an LTE cell blacklist; when the terminal equipment resides in a first LTE cell, detecting whether the terminal equipment can normally access a 5G network; and if the terminal equipment cannot normally access the 5G network, adding the first LTE cell into the first cell list.

Step 302: when the terminal equipment searches the cells, judging whether the searched second LTE cell is in the first cell list or not; if yes, go to step 303; if not, go to step 304;

specifically, the cell search performed by the terminal device includes: and searching in a preset frequency range based on the searching priority.

In some embodiments, the first LTE cell in the blacklist is an LTE shared cell that is not established by an operator to which the terminal device belongs.

Correspondingly, the method specifically comprises the following steps: the terminal equipment searches in a preset frequency band range based on the search priority, and if the searched second LTE cell is an LTE shared cell established by other operators, whether the searched second LTE cell is in the first cell list is judged; and if the searched second LTE cell is the LTE cell established by the operator, directly taking the cell as the resident target LTE cell.

The black list uniquely identifies one LTE Cell by using an LTE Cell Identifier, for example, the LTE Cell Identifier may include a frequency point + a Physical Cell Identifier (PCI), and when the searched second LTE Cell Identifier is consistent with the first LTE Cell Identifier in the black list, it is determined that the searched second LTE Cell is in the black list, and when the searched second LTE Cell Identifier is inconsistent with the first LTE Cell Identifier in the black list, it is determined that the searched second LTE Cell is not in the black list.

In some embodiments, the preset frequency band range includes at least one of: the frequency points stored by the terminal, the full frequency band of the operator to which the terminal belongs, and the full frequency band of the operator to which the non-terminal belongs.

It should be noted that, the searching priority includes that the frequency point priority stored by the terminal is higher than the full-band priority, and the full-band priority of the operator is higher than the full-band priority of the operator to which the non-terminal belongs. Namely, when the terminal searches the cell, firstly 'searching based on the stored information frequency point' and then 'searching in full frequency band', if the cell found on a certain frequency point is the cell in the blacklist, the terminal does not reside in the cell, and continues to search the next cell until the cell which is not in the blacklist is searched, and the cell is taken as the target LTE cell.

Step 303: when the searched second LTE cell is in the first cell list, ignoring the second LTE cell, continuing to search for a next cell, and returning to step 302;

in some embodiments, the method further comprises: and when the LTE cell which is not in the first cell list and meets the cell residence condition is not searched in a preset frequency range, searching the cell by adopting other access modes and accessing.

Here, the other Access method may be Wideband Code Division Multiple Access (WCDMA) or Global System for Mobile Communications (GSM).

In some embodiments, the method further comprises: when the LTE cell which is not in the first cell list and meets the cell residence condition is not searched in a preset frequency band range, the LTE cell which is in the first cell list and meets the cell residence condition is searched again and resided.

That is, if the terminal tries all access methods and still cannot find a suitable cell, in order to avoid entering a limited service state or a no service state, the search is performed again based on the stored information frequency point search and the full band search, but the terminal can try to camp on a cell in a blacklist at the time.

Step 304: when the searched second LTE cell is not in the first cell list, judging whether the second LTE cell meets a cell residence condition; if so, go to step 305; if not, go to step 303;

step 305; taking the second LTE cell as the target LTE cell;

step 306: and residing in the target LTE cell so that the terminal equipment can normally access the 5G network.

By adopting the technical scheme, when the terminal equipment selects the cell, the searched blacklist cell can be directly filtered according to the LTE cell blacklist, and the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the fact that the terminal resides in the blacklist cell is avoided.

Fig. 4 is a third flowchart of a cell camping method in an embodiment of the present application, and as shown in fig. 4, the method specifically includes, in a cell reselection process:

step 401: acquiring a preset first cell list; when the terminal equipment resides in the LTE cell in the first cell list, the terminal equipment cannot normally access the 5G network;

here, the first cell list may be understood as an LTE cell blacklist, where the LTE cell blacklist includes at least one LTE cell (abbreviated as a blacklisted cell), and when a terminal resides in the blacklisted cell, the terminal cannot be normally added and reside in a 5G cell, and the LTE cell blacklist may be established and maintained by the terminal itself or by a network side. That is, the step may specifically include: acquiring an LTE cell blacklist locally stored by terminal equipment; or sending a request to a network side, and the network side determines an LTE cell blacklist corresponding to the terminal according to the position information of the terminal and the information of the operator to which the terminal belongs and sends the LTE cell blacklist to the terminal.

Step 402: when the terminal equipment performs cell reselection, judging whether a third LTE cell meeting cell reselection judgment conditions is in the first cell list or not; if yes, go to step 403; if not, go to step 404;

LTE cell reselection refers to a process in which a terminal selects a best cell to provide a service signal by monitoring signal quality of a neighboring cell and a current cell in an idle mode. And when the signal quality and the level of the adjacent cell meet the S criterion and meet a certain reselection judgment criterion, the terminal is accessed to the cell to reside.

After the UE successfully resides, the cell measurement will be continued. The RRC layer calculates Srxlev (S criterion) according to the measurement result of the reference signal received power, and compares the Srxlev with Sintrasearch (same frequency measurement threshold value) and Snonitrasearch (different frequency measurement threshold value) to be used as a judgment condition for whether to reselect the adjacent cell.

Specifically, the cell reselection decision condition may be: and the UE determines to reselect the neighbor cell by detecting the signal strength of the neighbor cell and the current serving cell in an idle state, and when the signal strength of the neighbor cell is higher than a certain threshold value and the signal strength of the current serving cell is lower than a certain threshold value.

Step 403: if the reselection is determined to be failed, continuing cell reselection, and returning to the step 402;

here, when reselection fails, reselection decision is not made for the third LTE cell for a fourth time period.

Step 404: taking the third LTE cell as the target LTE cell;

i.e. the third LTE cell is not on the blacklist, reselection can be completed normally.

Step 405: and the terminal equipment reselects the target LTE cell.

By adopting the technical scheme, when the terminal equipment reselects the cell, the blacklist cell can be directly filtered according to the blacklist of the LTE cell, and the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the fact that the terminal resides in the blacklist cell is avoided.

Fig. 5 is a schematic diagram of a fourth flow of a cell camping method in the embodiment of the present application, and as shown in fig. 5, in a cell redirection process, the method specifically includes:

step 501: acquiring a preset first cell list; when the terminal equipment resides in the LTE cell in the first cell list, the terminal equipment cannot normally access the 5G network;

Step 502: when the terminal equipment redirects the cell, judging whether a redirected fourth LTE cell is in the first cell list; if yes, go to step 503; if not, go to step 504;

redirection in LTE means that the system indicates, through redirection operator information (redirected Carrier Info) in an RRC Connection Release message, that the terminal attempts to camp on a designated frequency point after leaving a connected state. And the terminal searches the cell on the appointed frequency point.

When the redirection based on the measurement is selected, the base station selects a cell with better priority and signal to initiate the redirection after receiving a measurement report of the UE; when the redirection based on non-measurement is selected, the base station selects the neighboring cell with the highest priority from the neighboring cell frequency points to initiate redirection.

Step 503: ignoring the fourth LTE cell, redirecting the next cell, and returning to the step 502;

step 504: taking the fourth LTE cell as the target LTE cell;

step 505: the terminal equipment is redirected to the target LTE cell.

By adopting the technical scheme, when the terminal equipment redirects the cell, the blacklist cell can be directly filtered according to the blacklist of the LTE cell, and the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the terminal residing in the blacklist cell is avoided.

Fig. 6 is a schematic diagram of a fifth flow of a cell camping method in the embodiment of the present application, and as shown in fig. 6, in a cell handover process, the method specifically includes: .

Step 601: acquiring a preset first cell list; when the terminal equipment resides in the LTE cell in the first cell list, the terminal equipment cannot normally access the 5G network;

Step 602: when the terminal equipment carries out cell switching, switching to a fifth LTE cell;

specifically, the cell handover decision condition may be: and the UE determines to switch to the adjacent cell by detecting the signal quality of the adjacent cell and the current serving cell in a connected state and when the signal intensity of the adjacent cell is higher than a certain threshold value and the signal intensity of the current serving cell is lower than a certain threshold value.

Step 603: judging whether a fifth LTE cell is in the first cell list; if yes, go to step 604; if not, go to step 605;

that is to say, after the terminal performs the cell switching operation, when it is detected that the network switches the cell where the terminal resides to the cell in the blacklist, the terminal is actively disconnected to cause the switching failure, and the terminal is forced to reselect other cells to reside, so as to avoid that the terminal resides in the blacklist cell for a long time and cannot enter the dual connectivity mode.

Step 604: when the fifth LTE cell is in the first cell list, disconnecting the fifth LTE cell;

step 605: maintaining a connection with the fifth LTE cell.

It should be noted that, after the terminal camps on the fifth LTE cell, the fifth LTE cell adds a 5G cell to the terminal, so that the terminal accesses the 5G network as well as the LTE cell, and enters the dual connectivity mode.

By adopting the technical scheme, when the terminal equipment is switched to the blacklist cell during cell redirection, the connection with the blacklist cell can be timely disconnected, and the problem of poor network service quality caused by the fact that the terminal cannot be successfully accessed to the 5G network due to the fact that the terminal is resided in the blacklist cell is avoided.

To implement the method of the embodiment of the present application, based on the same inventive concept, an embodiment of the present application further provides a cell camping apparatus, as shown in fig. 7, the apparatus includes:

a filtering unit 701, configured to filter an LTE cell to be camped on based on the first cell list, and determine a target LTE cell; the first cell list is used for storing abnormal LTE cells, and the terminal equipment cannot normally access the 5G network when residing in the abnormal LTE cells;

a camping unit 702, configured to camp on the target LTE cell, so that the terminal device accesses the 5G network.

In some embodiments, the apparatus further includes a detecting unit, configured to add the first LTE cell to the first cell list if the terminal device cannot normally access the 5G network after camping on the first LTE cell.

In some embodiments, the detecting unit is specifically configured to determine that the terminal device cannot normally access the 5G network, after entering the connected state, the detecting unit does not receive the SCG configuration information of the secondary cell group issued by the first LTE cell within a first time period;

In some embodiments, the detection unit is specifically configured to determine that the terminal device is abnormally disconnected from the 5G network when the disconnection of the terminal device from the 5G network is detected within the third time period and the signal strength of the 5G network is greater than the strength threshold.

In some embodiments, the detecting unit is further configured to delete the first LTE cell from the first cell list after a preset timer elapses after the first LTE cell is added to the first cell list.

In some embodiments, the apparatus further comprises: an obtaining unit, configured to obtain the first cell list locally stored by the terminal device; or sending an acquisition request to a network side so that the network side responds to the acquisition request to acquire and issue the first cell list corresponding to the terminal equipment; and receiving the first cell list issued by the network side.

In some embodiments, the filtering unit 701 is specifically configured to, when the terminal device performs cell search, ignore a second LTE cell when the searched second LTE cell is in the first cell list, and continue to search for a next cell; when the searched second LTE cell is not in the first cell list, judging whether the second LTE cell meets a cell residence condition; if so, taking the second LTE cell as the target LTE cell; if not, continuing to search the next cell.

In some embodiments, the filtering unit 701 is specifically configured to search within a preset frequency band range based on a search priority; when the LTE cell which is not in the first cell list and meets the cell residence condition is not searched in a preset frequency band range, the LTE cell which is in the first cell list and meets the cell residence condition is searched again and resided.

In some embodiments, the filtering unit 701 is specifically configured to, when the terminal device performs cell reselection, determine that reselection fails when a third LTE cell that meets a cell reselection decision condition is in the first cell list, and no longer perform reselection decision on the third LTE cell within a fourth time period; otherwise, the third LTE cell is taken as the target LTE cell;

the filtering unit 701 is specifically configured to, when the terminal device performs cell redirection, ignore a fourth LTE cell to be redirected when the fourth LTE cell is in the first cell list, and continue to determine a next redirection cell; otherwise, the fourth LTE cell is taken as the target LTE cell.

In some embodiments, the camping unit 702 is further configured to switch to a fifth LTE cell when the terminal device performs cell handover; when the fifth LTE cell is in the first cell list, disconnecting the connection with the fifth LTE cell.

Based on the hardware implementation of each unit in the user equipment, an embodiment of the present application further provides another user equipment, as shown in fig. 8, where the user equipment includes: a processor 801 and a memory 802 configured to store a computer program capable of running on the processor;

wherein the processor 801 is configured to execute the method steps in the previous embodiments when running the computer program.

Of course, in actual practice, the various components in the user device are coupled together by a bus system 803, as shown in FIG. 8. It is understood that the bus system 803 is used to enable communications among the components. The bus system 803 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 803 in figure 8.

In practical applications, the processor may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, and a microprocessor. It is understood that the electronic devices for implementing the above processor functions may be other devices, and the embodiments of the present application are not limited in particular.

The Memory may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD), or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the processor.

By adopting the terminal equipment, when the terminal equipment performs cell selection, cell reselection, cell redirection or other operations, the blacklist cell can be directly filtered according to the LTE cell blacklist, so that the problem of poor network service quality caused by the fact that the terminal cannot successfully access the 5G network due to the fact that the terminal resides in the blacklist cell is avoided.

In an exemplary embodiment, the present application further provides a computer readable storage medium, such as a memory including a computer program, which is executable by a processor of a terminal device to perform the steps of the foregoing method.

The technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. The above-described embodiments are merely illustrative, and for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims

1. A cell residing method is applied to a terminal device, and is characterized in that the terminal device has a dual connection function, and the method comprises the following steps:

2. The method of claim 1, further comprising:

and if the terminal equipment cannot normally access the 5G network after residing in the first LTE cell, adding the first LTE cell into the first cell list.

3. The method of claim 2, wherein the first LTE cell is an LTE shared cell that is not established by an operator to which the terminal device belongs.

4. The method of claim 2, wherein the method for detecting whether the terminal device can normally access the 5G network after camping on the first LTE cell comprises:

5. The method of claim 4, wherein the detecting that the terminal device is abnormally disconnected from the 5G network comprises:

and in a third time period, when the terminal equipment is detected to be disconnected from the 5G network and the signal intensity of the 5G network is greater than the intensity threshold value, determining that the terminal equipment is abnormally disconnected from the 5G network.

6. The method of claim 2, wherein after adding the first LTE cell to the first cell list, the method further comprises:

and deleting the first LTE cell from the first cell list when the preset timing time is up.

7. The method of claim 1, further comprising:

acquiring the first cell list locally stored by the terminal equipment;

or sending an acquisition request to a network side so that the network side responds to the acquisition request to acquire and issue the first cell list corresponding to the terminal equipment; and receiving the first cell list issued by the network side.

8. The method of claim 1, wherein the filtering the LTE cell to be camped on based on the first cell list to determine the target LTE cell comprises:

when the terminal equipment searches the cells, when a searched second LTE cell is in the first cell list, ignoring the second LTE cell and continuing to search a next cell;

when the searched second LTE cell is not in the first cell list, judging whether the second LTE cell meets a cell residence condition;

if so, taking the second LTE cell as the target LTE cell;

if not, continuing to search the next cell.

9. The method of claim 8, wherein the terminal device performs cell search, comprising: searching in a preset frequency range based on the searching priority;

the method further comprises the following steps:

when the LTE cell which is not in the first cell list and meets the cell residence condition is not searched in a preset frequency band range, the LTE cell which is in the first cell list and meets the cell residence condition is searched again and resided.

10. The method of claim 1, wherein the filtering the LTE cell to be camped on based on the first cell list to determine the target LTE cell comprises:

when the terminal equipment performs cell reselection, when a third LTE cell meeting cell reselection judgment conditions is in the first cell list, judging that reselection fails, and not performing reselection judgment on the third LTE cell within a fourth time period; otherwise, the third LTE cell is taken as the target LTE cell;

or when the terminal equipment redirects the cell, when a redirected fourth LTE cell is in the first cell list, ignoring the fourth LTE cell and continuously judging a next redirected cell; otherwise, the fourth LTE cell is taken as the target LTE cell.

11. The method of claim 1, further comprising:

when the terminal equipment carries out cell switching, switching to a fifth LTE cell;

when the fifth LTE cell is in the first cell list, disconnecting the connection with the fifth LTE cell.

12. An apparatus for camping on a cell, the apparatus comprising:

13. A terminal device, characterized in that the terminal device comprises: a processor and a memory configured to store a computer program capable of running on the processor,

wherein the processor is configured to perform the steps of the method of any one of claims 1 to 11 when running the computer program.

14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 11.