CN113556788A

CN113556788A - Method for selecting network cell, User Equipment (UE) and network side equipment

Info

Publication number: CN113556788A
Application number: CN202010327574.5A
Authority: CN
Inventors: 周锐; 彦楠
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-10-26

Abstract

The invention provides a method for selecting a network cell, User Equipment (UE) and network side equipment, wherein the method comprises the following steps: after triggering and selecting a first network cell, searching a cell with the strongest signal on a frequency point supported by the cell; when determining that a cell with the strongest signal on one frequency point belongs to a second network cell, acquiring indication information sent by the cell with the strongest signal, and determining whether to search a first network cell at a shared frequency point; if yes, searching a first network cell with the strongest signal at the shared frequency point, and acquiring a network identification list corresponding to the first network cell with the strongest signal; and selecting a resident cell from the network identification list. The scheme provided by the invention solves the problem of network omission in the existing method for selecting the network cell by the UE.

Description

Method for selecting network cell, User Equipment (UE) and network side equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method for selecting a network cell, a user equipment UE, and a network side device.

Background

In a wireless communication system, a user equipment UE camps on a suitable PLMN by selecting a PLMN (Public Land Mobile Network), thereby acquiring a corresponding Network service.

The basic process of PLMN selection at present is that an Access Stratum (AS) of the UE searches for a cell with the strongest signal on each supported frequency point and reads its system message, thereby obtaining a corresponding PLMN Identification (ID) list, and selects a resident PLMN according to the list. After selecting the PLMN, the UE selects a suitable cell to camp on through a cell selection process.

Release 5G R16 introduced a Non-Public Network (NPN). The NPN may be deployed in various ways, and may be deployed independently of an existing 5G Public Network, that is, by using an SNPN (Stand-alone Non-Public Network) or may be deployed on an existing 5G Public Network PNI-NPN (Public Network Integrated NPN, Non-Public Network of a Non-independent Network) in a shared manner, where the PNI-NPN provides an NPN service through a PLMN Network.

The UE supporting the SNPN function can work in an SNPN mode, and in the SNPN mode, the process of network selection of the UE is the same as the process of PLMN selection, but only SNPN residence can be selected, and PLMN residence cannot be selected. For the UE working in the SNPN mode, when performing network selection (i.e., SNPN selection), the basic process is the same AS PLMN selection, and according to the prior art, the AS layer of the UE also searches for each supported frequency band, searches for a cell with the strongest signal on each frequency point of each frequency band, and reads its system message, thereby obtaining a corresponding SNPN ID list.

After the NPN network is introduced, cells on the same frequency point may belong to different networks, and uncertainty exists in the relative strength relationship between the signal strengths of the different network cells, so that the network to which the cell with the strongest signal quality belongs has uncertainty. In this case, when the UE selects a network cell, if the network type of the cell with the strongest signal is uncertain, some cells with the same network type as the UE may be missed, so that the UE cannot select a network corresponding to its network mode in the network selection process, and cannot stay in the cell of the network to provide service for the user.

Therefore, after the NPN network is introduced, the current method for selecting a network cell by the UE has a problem of network omission, which may cause that the UE cannot select a suitable network in the network selection process.

Disclosure of Invention

The invention provides a method for selecting a network cell, User Equipment (UE) and network side equipment, which are used for solving the problem of network omission in the conventional method for selecting the network cell by the UE.

According to a first aspect of the embodiments of the present invention, there is provided a method for selecting a network cell, which is applied to a UE, and the method includes:

after triggering and selecting a first network cell, searching a cell with the strongest signal on a frequency point supported by the cell;

when determining that a cell with the strongest signal on one frequency point belongs to a second network cell, acquiring indication information sent by the cell with the strongest signal, and determining whether to search a first network cell at a shared frequency point;

if yes, searching a first network cell with the strongest signal at the shared frequency point, and acquiring a network identification list corresponding to the first network cell with the strongest signal;

and selecting a resident cell from the network identification list.

Optionally, the method further comprises:

and when the first network cell is determined not to be searched at the shared frequency point, selecting the first network cell at the next frequency point supported by the first network cell.

Optionally, after searching for the cell with the strongest signal on the frequency point supported by the cell, the method further includes:

when the cell with the strongest signal on one frequency point is determined to belong to a first network cell, a network identification list corresponding to the cell with the strongest signal is obtained.

Optionally, the acquiring the indication information sent by the cell with the strongest signal includes at least one of the following steps:

acquiring indication information sent by the cell with the strongest signal through a system information block SIB 1;

acquiring indication information sent by the cell with the strongest signal through a master information block MIB;

and acquiring the indication information sent by the cell with the strongest signal through the downlink control information DCI on the physical downlink control channel.

Optionally, the indication information sent by the strongest cell includes at least one of the following:

whether the indication information of the first network cell exists on the common frequency point or not is judged;

and the Physical Cell Identifier (PCI) range of the first network cell existing on the shared frequency point.

Optionally, the determining whether to search for the first network cell in the common frequency point includes:

when the first network cell exists on the shared frequency point according to the indication information, the first network cell is determined to be searched on the shared frequency point, otherwise, the first network cell is not searched on the shared frequency point; or

If the indication information comprises the PCI range of the first network cell existing on the shared frequency point, searching the first network cell with the strongest signal in the PCI range, otherwise, not searching the first network cell on the shared frequency point.

Optionally, the first network cell is a public land mobile network PLMN cell, and the second network cell is an independent networking non-public network SNPN cell; or

The first network cell is an SNPN cell, and the second network cell is a PLMN cell.

According to a second aspect of the embodiments of the present invention, a method for selecting a network cell is provided, which is applied to a network side device, and the method includes:

determining whether a first network cell sharing a frequency point with the second network cell exists;

and sending corresponding indication information to the user terminal UE according to the determination result so that the UE determines whether to search the first network cell at the shared frequency point.

Optionally, the sending, according to the determination result, corresponding indication information to the user equipment UE includes:

and when determining that the first network cell sharing the frequency point with the second network cell exists, sending corresponding indication information to the UE, otherwise, not sending the corresponding indication information to the UE.

Optionally, the method further comprises:

when a first network cell sharing a frequency point with the second network cell is determined to exist, cell information sent by the first network cell is obtained, and the cell information of the second network cell is sent to the first network cell.

Optionally, the cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

Optionally, the sending of the corresponding indication information to the user terminal UE includes at least one of the following steps:

sending corresponding indication information to the UE through a system information block SIB 1;

sending corresponding indication information to the UE through a master information block MIB;

and sending corresponding indication information to the UE through Downlink Control Information (DCI) on a physical downlink control channel.

Optionally, the corresponding indication information sent to the user terminal UE includes at least one of the following:

and sharing the PCI range of the first network cell existing on the frequency point.

Optionally, determining corresponding indication information comprises:

when a first network cell sharing a frequency point with the second network cell is determined to exist, determining that corresponding indication information is indication information of the first network cell existing on the sharing frequency point, otherwise, determining that the corresponding indication information is indication information of the first network cell not existing on the sharing frequency point; or

And determining a first network cell sharing a frequency point with the second network cell, and when cell information sent by the first network cell is acquired, determining that the corresponding indication information is the PCI range of the first network cell existing on the sharing frequency point, otherwise, determining that the corresponding indication information is the indication information of the first network cell not existing on the sharing frequency point.

According to a third aspect of the embodiments of the present invention, there is provided a user equipment UE, including:

the initial searching module is used for searching the cell with the strongest signal on the frequency point supported by the initial searching module after triggering the selection of the first network cell;

the indication receiving module is used for acquiring indication information sent by the cell with the strongest signal when the cell with the strongest signal on one frequency point is determined to belong to a second network cell, and determining whether to search the first network cell at the shared frequency point;

the second searching module is used for searching the first network cell with the strongest signal at the shared frequency point and acquiring a network identifier list corresponding to the first network cell with the strongest signal if the first network cell with the strongest signal is found;

and the cell selection module is used for selecting the resident cell from the network identification list.

Optionally, the re-search module is further configured to:

Optionally, after the initial search module searches for a cell with a strongest signal on a frequency point supported by the initial search module, the indication receiving module is further configured to:

Optionally, the step of acquiring, by the indication receiving module, the indication information sent by the cell with the strongest signal includes at least one of the following steps:

Optionally, the determining, by the instruction receiving module, whether to search for the first network cell at the common frequency point includes:

According to a fourth aspect of the embodiments of the present invention, there is provided a network side device, including:

the shared frequency point judging module is used for determining whether a first network cell sharing the frequency point with the second network cell exists or not;

and the indication sending module is used for sending corresponding indication information to the user equipment UE according to the determination result so that the UE determines whether to search the first network cell at the shared frequency point.

Optionally, the instruction sending module sends corresponding instruction information to the user equipment UE according to the determination result, where the instruction sending module includes:

Optionally, the common frequency point determining module is further configured to:

Optionally, the cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

Optionally, the instruction sending module sends corresponding instruction information to the user terminal UE, and includes at least one of the following steps:

Optionally, the indication sending module determines corresponding indication information, including:

According to a fifth aspect of the embodiments of the present invention, there is provided a user equipment UE, including: a memory and a processor; wherein:

the memory is used for storing a computer program;

the processor is used for reading the program in the memory and executing:

and selecting a resident cell from the network identification list.

Optionally, the processor is further configured to:

Optionally, after the processor searches for the cell with the strongest signal on the frequency point supported by the processor, the processor is further configured to:

Optionally, the processor obtains the indication information sent by the cell with the strongest signal, and includes at least one of the following steps:

Optionally, the determining whether to search for the first network cell in the common frequency point by the processor includes:

According to a sixth aspect of the embodiments of the present invention, there is provided a network side device, including: a memory and a processor; wherein:

the memory is used for storing a computer program;

the processor is used for reading the program in the memory and executing:

Optionally, the processor sends corresponding indication information to the user equipment UE according to the determination result, including:

Optionally, the processor is further configured to:

Optionally, the cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

Optionally, the processor sends corresponding indication information to the user terminal UE, and includes at least one of the following steps:

Optionally, the processor determines corresponding indication information, including:

According to a seventh aspect of the embodiments of the present invention, there is provided a chip, which is coupled to a memory in a device, so that when the chip calls a program instruction stored in the memory during running, the chip implements the above aspects of the embodiments of the present application and any method that may be involved in the aspects.

According to an eighth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium storing program instructions which, when executed on a computer, cause the computer to perform the various aspects of the embodiments of the present invention described above and any methods to which the various aspects pertain.

According to a ninth aspect of embodiments of the present invention, there is provided a computer program product, which, when run on an electronic device, causes the electronic device to perform a method of implementing the various aspects of the embodiments of the present application and any possible references to the various aspects.

The method for selecting the network cell, the user terminal UE and the network side equipment provided by the invention have the following beneficial effects that:

after triggering the network cell selection and searching the cell with the strongest signal, the UE receives the indication information sent by the cell with the strongest signal if the cell with the strongest signal is different from the network type of the UE, and determines whether to continue searching the cell with the strongest signal in the same network at the shared frequency point according to the indication information. When determining that the network side equipment shares the frequency point with other network cells, the network side equipment sends corresponding indication information to the UE, so that the UE determines whether to search the same network cell with the strongest signal at the shared frequency point according to the indication information, and the problem of network omission in the conventional method for selecting the network cell by the UE is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart illustrating a method for selecting a network cell by a UE;

fig. 2 is a schematic diagram of introducing an NPN network in the current network cell selection method;

fig. 3 is a schematic diagram of a system for applying a method for selecting a network cell according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating a method for selecting a network cell according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a method for selecting a network cell according to an embodiment of the present invention;

fig. 6 is a schematic flowchart of selecting a network cell by a UE in an SNPN mode according to an embodiment of the present invention;

fig. 7 is a schematic flowchart of selecting a network cell by a UE in an SNPN mode according to an embodiment of the present invention;

fig. 8 is a flowchart illustrating a PLMN-mode UE selecting a network cell according to an embodiment of the present invention;

fig. 9 is a schematic flowchart of selecting a network cell by a UE in PLMN mode according to an embodiment of the present invention;

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

fig. 11 is a schematic device diagram of a network-side device provided in an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a user equipment UE according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a network-side device provided in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the present application, "and/or" describes an association relationship of associated objects, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

For convenience of understanding, terms referred to in the embodiments of the present invention are explained below:

1) PLMN (Public Land Mobile Network): a public network established and operated for the purpose of providing land mobile communication services to the public, the network being typically interconnected with the Public Switched Telephone Network (PSTN) to form a regional or national scale communication network;

2) NPN (Non-Public Network ): the NPN can be independently operated by an SNPN operator independent of a public network PLMN, and can also be operated by a PLMN operator dependent on the PLMN.

In the existing ground mobile communication system, when a UE accesses a network to obtain network services, the UE first needs to select a network to be accessed, and then selects a network cell to determine a cell to be camped on. Currently, the UE supporting the SNPN function may operate in the SNPN mode or the PLMN mode, but only selects a network cell with the same network mode as the UE.

Referring to fig. 1, a flow chart of a method for selecting a network cell for a current UE includes the following steps:

step S101, after triggering network selection, UE searches the strongest signal cell on each frequency point on the supported frequency band;

step S102, reading a system message SIB1 of a cell with the strongest signal, and storing a corresponding network identification (PLMN ID or SNPN ID) list;

step S103, determining whether the search of all the supported frequency bands is finished;

if so, go to step S104, otherwise, go to step S105.

Step S104, selecting resident cells according to all searched network identification lists;

step S105, searching the next frequency point, acquiring a network identification list corresponding to the cell with the strongest signal, and executing step S103.

In the method for selecting the network cell, when the searched cell with the strongest signal is the PLMN cell, the network identifier list corresponding to the PLMN cell is obtained, and when the searched cell with the strongest signal is the SNPN cell, the network identifier list corresponding to the SNPN cell is obtained.

After an NPN network is introduced, the SNPN and the PLMN may share the same frequency point, and PCIs with different ranges of the same frequency point are respectively used for network deployment. When the UE in the SNPN mode is selecting the SNPN network cell, if the cell with the strongest signal on a certain frequency point is the PLMN cell, only the strongest cell on the frequency point is detected according to the above-mentioned existing flow, and some existing SNPN networks are missed. The UE operating in the SNPN mode may not select a suitable SNPN in the network selection process, and may not camp on the SNPN cell to provide service for the user. Similar problems exist for UE in a non-SNPN mode, when the UE performs PLMN selection, if a cell with the strongest signal on a frequency point shared by SNPN and PLMN is an SNPN cell, only the cell with the strongest signal on the frequency point is detected according to the existing process, and the condition that the PLMN network is missed to be detected can occur. Therefore, the UE cannot select a suitable PLMN in the network selection, and cannot camp on a PLMN cell to provide a service for the user.

Referring to fig. 2, a schematic diagram of introducing an NPN network in a current network cell selection method is shown. As shown, assume that the UE supports two frequency points: frequency point 1 and frequency point 2, wherein, a PLMN cell (PLMN cell 1) and an SNPN cell (SNPN cell 1 and SNPN cell 2) simultaneously exist on frequency point 2, and PLMN cell 1 is the cell with the strongest signal quality on frequency point 2, according to the above existing process, when a UE working in the SNPN mode performs SNPN selection, after only the cell with the strongest signal is searched, PLMN cell 1 is found, then a corresponding PLMN network identifier list is not stored, and the next frequency point is directly searched, SNPN cell 1 and SNPN cell 2 cannot be searched by the UE, and the corresponding SNPN network identifier list will be finally acquired by the UE, resulting in that a suitable SNPN cell exists on frequency point 2, but cannot be selected by the UE to provide service for the user.

In view of this, an embodiment of the present invention provides a method for selecting a network cell, which is applied to a scenario in which a UE performs network selection, and indicates, by a network side device, whether information of other types of networks exists to the UE, and the UE receives the indication information and determines, according to the received indication information, whether to search only a cell with a strongest signal or to search other cells on the same frequency point, so as to avoid a network omission condition occurring when the cell with the strongest signal on a frequency point shared by a PLMN and an SNPN is not a network of a target type selected by the network.

Fig. 3 is a schematic diagram of a system for applying the method for selecting a network cell according to the embodiment of the present invention. As shown in the figure, the system applied to the method for selecting a network cell provided in the embodiment of the present invention includes a user terminal 301, a network side device 302 of a first network cell, and a network side device 303 of a second network cell, where a network type corresponding to the user terminal 301 is the first network or the second network, and the network side device 302 and the network side device 303 are different network side devices sharing the same frequency point.

The user terminal 301 is configured to search a cell with the strongest signal on a frequency point supported by the user terminal after triggering selection of a first network cell; when determining that a cell with the strongest signal on one frequency point belongs to a second network cell, acquiring indication information sent by the cell with the strongest signal, and determining whether to search a first network cell at a shared frequency point; if yes, searching a first network cell with the strongest signal at the shared frequency point, and acquiring a network identification list corresponding to the first network cell with the strongest signal; and selecting a resident cell from the network identification list.

When the network type corresponding to the user terminal 301 is a second network, the network side device 302 of the first network cell is configured to determine whether a second network cell sharing a frequency point with the first network cell exists; and sending corresponding indication information to the user terminal UE according to the determination result so that the UE determines whether to search the second network cell at the shared frequency point.

When the network type corresponding to the user terminal 301 is a first network, the network side device 303 of the second network cell is configured to determine whether a first network cell sharing a frequency point with the second network cell exists; and sending corresponding indication information to the user terminal UE according to the determination result so that the UE determines whether to search the first network cell at the shared frequency point.

In the embodiments of the present invention, a user equipment UE may specifically refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a Mobile station in a 5G Network, or a subscribing device in a future evolved Public Land Mobile Network (PLMN) Network, etc.

The network side device may be a next generation Base Station (gNB) in a 5G System, and may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) System or a Code Division Multiple Access (CDMA) System, a Base Station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) System, an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) System, or the like.

For convenience of description, fig. 3 only illustrates one user terminal and two network-side devices sharing a frequency point, and in an actual system, multiple terminals and network-side devices may coexist, which is not described herein again. It should be noted that the above system architecture is only an example of the system architecture applicable to the embodiment of the present invention, and the system architecture applicable to the embodiment of the present invention may also add other entities or reduce part of the entities compared to the system architecture shown in fig. 3.

Example 1

The embodiment of the invention provides a method for selecting a network cell, which is applied to User Equipment (UE). As shown in fig. 4, the method includes:

step S401, after the selection of the first network cell is triggered, searching the cell with the strongest signal on the frequency point supported by the cell;

in the embodiment of the invention, the working mode of the UE is the first network mode, so that the UE selects the first network cell when selecting the network cell. The first network mode is a PLMN mode or an SNPN mode.

After the UE triggers the selection of the first network cell, the UE searches for the cell with the strongest signal on the frequency point of the communication frequency band supported by the UE through its AS layer.

Step S402, when determining that the cell with the strongest signal on one frequency point belongs to a second network cell, acquiring indication information sent by the cell with the strongest signal, and determining whether to search a first network cell at a shared frequency point;

the UE searches the strongest cell of the supported frequency points according to the steps, acquires a network identification list corresponding to the strongest cell of the signals when searching the strongest cell of the frequency points and determining that the strongest cell of the signals belongs to a first network cell, specifically reads system information broadcasted by network side equipment corresponding to the strongest cell of the signals, acquires the corresponding network identification list from the system information, and then searches the strongest cell of the signals of the next frequency point. And the cell with the strongest signal is the cell with the strongest signal quality in all the cells on the corresponding frequency point.

When the UE searches the cell with the strongest signal on one frequency point and determines that the cell with the strongest signal belongs to the second network cell, the indication information sent by the cell with the strongest signal is obtained, and whether the first network cell is searched on the shared frequency point is determined. When the UE searches that the cell with the strongest signal belongs to the second network cell, the cell is not the cell in which the UE can reside, and at the moment, the UE can determine whether the frequency point is a shared frequency point or not and whether the first network cell exists or not according to the indication information sent by the cell with the strongest signal, and then determines whether to continue searching other network cells on the frequency point or not.

When the UE acquires the indication information sent by the cell with the strongest signal, at least one of the following steps is adopted:

Currently, when acquiring the network identification list corresponding to the cell with the strongest signal, the UE acquires the network identification list from SIB1(System Information Blocks) sent by the cell with the strongest signal, so that the UE may acquire the indication Information that the cell with the strongest signal is added to SIB1 through SIB1, or acquire the indication Information through other messages sent by the cell with the strongest signal alone, such as MIB (Master Information Block), DCI (Downlink Control Information), and the like.

In the embodiment of the present invention, the indication information sent by the cell with the strongest signal includes at least one of the following items:

the PCI (Physical Cell Identifier) range of the first network Cell existing on the common frequency point.

When the UE determines whether to search the first network cell at the shared frequency point according to the indication information, any one of the following methods is adopted:

1) when the first network cell exists on the shared frequency point according to the indication information, the first network cell is determined to be searched on the shared frequency point, otherwise, the first network cell is not searched on the shared frequency point;

2) if the indication information comprises the PCI range of the first network cell existing on the shared frequency point, searching the first network cell with the strongest signal in the PCI range, otherwise, not searching the first network cell on the shared frequency point.

When the indication information acquired by the UE is the indication information of the first network cell existing on the shared frequency point or the PCI range of the first network cell existing on the shared frequency point, the frequency point can be determined to be the shared frequency point and the first network cell exists on the shared frequency point, so that the UE determines to search the first network cell on the shared frequency point. And when the acquired indication information is the PCI range of the first network cell existing on the shared frequency point, searching the first network cell with the strongest signal in the PCI range on the shared frequency point.

And when the indication information acquired by the UE is that no first network cell exists on the shared frequency point, determining that no proper network cell exists on the frequency point, determining not to search the first network cell on the frequency point, selecting the first network cell on a next frequency point supported by the UE, and repeatedly selecting the first network cell on the next frequency point.

In the embodiment of the invention, when the UE does not acquire the indication information of the cell with the strongest signal, the UE determines not to search the first network cell on the frequency point, selects the first network cell on the next frequency point supported by the UE, and repeatedly selects the first network cell on the next frequency point.

Step S403, if yes, searching the first network cell with the strongest signal at the shared frequency point, and acquiring a network identifier list corresponding to the first network cell with the strongest signal;

and when the UE determines to search the first network cell on the common frequency point according to the steps, the UE searches the first network cell with the strongest signal on the common frequency point and acquires a network identification list corresponding to the first network cell with the strongest signal. The first network cell with the strongest signal is the cell with the strongest signal quality in the cells of the first network type on the shared frequency point.

Step S404, selecting a resident cell from the network identifier list.

And the UE sends all the acquired network identifier lists to the NAS layer through the AS layer after searching the supported frequency points through the AS layer according to the steps, selects resident network cells in the acquired network identifier lists through the NAS layer and accesses the corresponding networks, thereby acquiring network services and providing services for users.

The above method for selecting the camping cell according to the network identification list can adopt the prior art, and is not detailed here.

In the embodiment of the invention, a first network cell is a Public Land Mobile Network (PLMN) cell, and a second network cell is an independent networking non-public network (SNPN) cell; or, the first network cell is an SNPN cell, and the second network cell is a PLMN cell.

In the embodiment of the invention, the network type of the first network cell is the same as the type of the UE working mode, and the network type of the second network cell is different from the type of the UE working mode. Specifically, in the embodiment of the present invention, when the operating mode of the UE, that is, the first network mode, is a PLMN mode, the first network cell is a public land mobile network PLMN cell, and the second network cell is a non-public network SNPN cell that is an independent network; in the embodiment of the present invention, when the operating mode of the UE, that is, the first network mode is the SNPN mode, the first network cell is the SNPN cell, and the second network cell is the PLMN cell.

The embodiment of the invention also provides a method for selecting the network cell, which is applied to the network side equipment of the second network cell. As shown in fig. 5, the method includes:

step S501, determining whether a first network cell sharing a frequency point with the second network cell exists;

at present, for a deployment scene that different networks share the same frequency point, operators of different networks can all acquire information that the used frequency point is shared by the other party, so that the network can indicate whether other types of networks exist to a terminal, and therefore, a UE can judge whether to search only a strongest cell or other cells on the same frequency point according to the indicated related information, and the problem of network omission caused when the strongest cell is not a target type of network to be selected on the different network shared frequency points is solved.

Step S502, according to the determined result, sending corresponding indication information to the user terminal UE, so that the UE determines whether to search the first network cell at the shared frequency point.

And when the network side equipment determines that a first network cell sharing the frequency point with a second network cell exists, the network side equipment sends corresponding indication information to the UE, otherwise, the network side equipment does not send the corresponding indication information to the UE.

When the network side equipment determines that a first network cell sharing a frequency point with a second network cell exists, the corresponding indication information is determined to be the indication information of the first network cell existing on the sharing frequency point, otherwise, the corresponding indication information is determined to be the indication information of the first network cell not existing on the sharing frequency point.

Further, when the network side device determines that a first network cell sharing a frequency point with a second network cell exists, the network side device acquires cell information sent by the first network cell, and sends cell information of the second network cell, namely a network cell corresponding to the second network cell, to the first network cell. Specifically, the cell information may be sent or received via an NG interface with a network-side device of the first network cell.

The cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

The network side equipment can determine the PCI range of the first network cell for network deployment according to the cell information sent by the first network cell, so that the network side equipment determines the first network cell with the frequency point shared by the first network cell and the second network cell, and can determine that the corresponding indication information is the PCI range of the first network cell existing on the shared frequency point when the cell information sent by the first network cell is obtained, otherwise, the network side equipment determines that the corresponding indication information is the indication information that the first network cell does not exist on the shared frequency point.

When the network side equipment determines that a first network cell sharing a frequency point with a second network cell exists, the corresponding indication information determined according to the method comprises at least one of the following items:

The method comprises the following steps that when the network side equipment determines that a first network cell sharing a frequency point with a second network cell exists and sends corresponding indication information to the UE, the network side equipment adopts at least one of the following steps to send the indication information:

Currently, when the network side device sends the network identification list corresponding to the cell to the UE, the network side device sends the network identification list through SIB1, so the network side device may add the above indication information to SIB1, send the indication information together through SIB1, or send the indication information separately through other messages, such as MIB, DCI, and the like.

In the method for selecting a network cell provided by the embodiment of the invention, when the network side equipment determines that the network side equipment shares a frequency point with other network cells, the network side equipment sends corresponding indication information to the UE, so that the UE determines whether to search the same network cell with the strongest signal at the shared frequency point according to the indication information. After triggering the network cell selection and searching the cell with the strongest signal, the UE receives the indication information sent by the cell with the strongest signal if the cell with the strongest signal is different from the network type of the UE, and determines whether to continue searching the cell with the strongest signal in the same network at the shared frequency point according to the indication information. The problem of network missed detection in the existing method for selecting the network cell by the UE is solved.

The system architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the system architecture and the appearance of a new service scenario.

Example 2

The present embodiment exemplifies the method for selecting a network cell provided in the above embodiment of the present invention, by taking the example that the UE works in different network modes, acquires the indication information through different types of system information, and determines whether to search for the first network cell on the common frequency point by the indication information.

In this embodiment, when the SNPN cell and the PLMN cell determine the common frequency point, the cell information of the cell is sent to the other party (the cell with the same frequency) through the NG interface, and the network side device of the PLMN cell updates the indication information sent to the UE through the system message according to the cell information sent by the SNPN cell. For example, adding an SNPN-OnIntraFrequency indicator in a system message to indicate SNPN cells existing on the same frequency, and/or adding a PCIRange _ ForSharedSNPN to indicate the PCI range of SNPN cells existing on the same frequency.

And the network side equipment of the SNPN cell updates the indication information sent to the UE through the system message according to the cell information sent by the PLMN cell. For example, adding a cell PLMN-onarthermarkyindicator to indicate a PLMN cell existing on the same frequency in the system message, and/or adding a cell PCIRange _ ForSharedPLMN to indicate a PCI range of a PLMN cell existing on the same frequency.

At present, a function of energy saving is introduced into the 5G NR, and a network side device can be automatically turned off under a necessary condition so as to save energy and reduce operation overhead. In this embodiment, when the SNPN cell is automatically closed or opened, the cell information of the cell is sent to an AMF (Access and Mobility Management Function) entity through an NG interface. And the AMF entity forwards the received cell information of the SNPN cell to a PLMN cell at the same frequency point. And the PLMN cell updates the indication information in the system information according to the received cell information of the SNPN cell.

And when the PLMN cell is automatically closed or opened, the cell information of the cell is sent to the AMF entity through the NG interface. And the AMF entity forwards the received cell information of the PLMN cell to the SNPN cell at the same frequency point. And the SNPN cell updates the indication information in the system information according to the received cell information of the PLMN cell.

A specific example of a method for selecting a network cell by a UE is given below:

example 1

The working mode of the UE is an SNPN mode, the first network cell is an SNPN cell, the second network cell is a PLMN cell, the SNPN cell and the PLMN cell share the same frequency point, and the UE acquires the indication information whether the second network cell exists on the shared frequency point through an SIB1 sent by the network side equipment.

Referring to fig. 6, a schematic flow chart of selecting a network cell for the UE in the SNPN mode according to the embodiment of the present invention is shown, in which an SNPN-onlnterfrequency indicator is added to an SIB1 to indicate an SNPN cell existing on the same frequency. As shown, the process of the method includes:

step S601, after triggering network selection, UE searches the strongest signal cell on each frequency point on the supported frequency band and reads the system message SIB1 of the strongest signal cell;

step S602, determining whether a valid SNPN ID list exists in a system message SIB1 of a cell with the strongest signal;

if so, go to step S603, otherwise, go to step S604.

Step S603, storing a corresponding SNPN ID list;

and performs step S606.

Step S604, determining whether the SIB1 has the cell SNPN-OnIntrafrequency indicator;

if so, go to step S605, otherwise go to step S606.

Step S605, UE searches other SNPN subdistricts on the same frequency point and obtains a corresponding SNPN ID list;

step S606, searching network cells on the next frequency point is carried out.

In the above process, after the UE-side network selection is triggered, the UE searches for a cell with the strongest signal quality on each frequency point on the supported frequency band and obtains the SNPN ID list broadcasted in the system information thereof, and when searching for a specific frequency point shared by the SNPN and the PLMN, detects the cell with the strongest signal on the frequency point and reads the system information SIB1 thereof. If the system information SIB1 of the cell with the strongest signal only contains an effective PLMN ID list and no effective SNPN ID list exists, the cell is a PLMN cell, whether an SNPN-OnIntra frequency indicator exists or not is further checked, if so, the SNPN cell exists on the frequency point is judged, and the SNPN cell on the current frequency point is further searched and the SNPN ID list in the system information is read. If the SNPN-OnIntrafrequency indicator does not exist in the cell, the next frequency point is directly searched. And after the UE finishes searching the network cells on each frequency point on the supported frequency band, selecting the resident SNPN cells according to the obtained SNPN ID lists.

Referring to fig. 7, a schematic flow chart of selecting a network cell for an SNPN mode UE according to an embodiment of the present invention is shown, in which an information element PCIRange _ ForSharedSNPN is added to an SIB1 to indicate a PCI range of SNPN cells existing on the same frequency. As shown, the process of the method includes:

step S701, after triggering network selection, UE searches the strongest signal cell on each frequency point on the supported frequency band and reads the system message SIB1 of the strongest signal cell;

step S702, determining whether a valid SNPN ID list exists in a system message SIB1 of a cell with the strongest signal;

if so, go to step S703, otherwise, go to step S704.

Step S703, saving the corresponding SNPN ID list;

and performs step S706.

Step S704, determine whether there is cell PCIRange _ ForSharedSNPN in SIB 1;

if so, go to step S705, otherwise, go to step S706.

Step S705, UE searches other SNPN subdistricts in the PCI range appointed by the cell on the same frequency point and obtains a corresponding SNPN ID list;

step S706, searching for the network cell on the next frequency point.

In the method, after the selection of the network at the UE end is triggered, the UE searches the cell with the strongest signal quality on each frequency point on the supported frequency band and acquires the SNPN ID list broadcasted in the system information, and when a specific frequency point shared by the SNPN and the PLMN is searched, the cell with the strongest signal on the frequency point is detected and the system information SIB1 is read. If the system information SIB1 of the cell with the strongest signal only contains a valid PLMN ID list and no valid SNPN ID list exists, the cell is a PLMN cell, whether a cell PCIRange _ ForSharedSNPN exists is further checked, if so, the SNPN cell exists on the frequency point is judged, and the SNPN cell in the appointed PCI range on the current frequency point is further searched according to the cell PCIRange _ ForSharedSNPN and the SNPN ID list in the system information is read. If the SNPN-OnIntrafrequency indicator does not exist in the cell, the next frequency point is directly searched. And after the UE finishes searching the network cells on each frequency point on the supported frequency band, selecting the resident SNPN cells according to the obtained SNPN ID lists.

Example 2

The working mode of the UE is a PLMN mode, the first network cell is a PLMN cell, the second network cell is an SNPN cell, the PLMN cell and the SNPN cell share the same frequency point, and the UE acquires the indication information whether the second network cell exists on the shared frequency point through SIB1 sent by network side equipment.

Referring to fig. 8, a schematic flow chart of selecting a network cell for a UE in PLMN mode according to an embodiment of the present invention is shown, in which a PLMN-onantroquendicator is added in an SIB1 to indicate a PLMN cell existing on the same frequency. As shown, the process of the method includes:

step S801, after triggering network selection, UE searches the strongest signal cell on each frequency point on the supported frequency band and reads the system message SIB1 of the strongest signal cell;

step S802, determining whether a valid PLMN ID list exists in a system message SIB1 of a cell with the strongest signal;

if so, go to step S803, otherwise, go to step S804.

Step S803, save the corresponding PLMN ID list;

and performs step S806.

Step S804, determine whether there is cell PLMN-OnIntrafequency indicator in SIB 1;

if so, go to step S805, otherwise, go to step S806.

Step S805, the UE searches other PLMN cells on the same frequency point and acquires a corresponding PLMN ID list;

step S806, search for a network cell on the next frequency point is performed.

In the above process, after the UE-side network selection is triggered, the UE searches for a cell with the strongest signal quality on each frequency point on the supported frequency band and acquires a PLMN ID list broadcasted in the system information of the cell, and when searching for a specific frequency point shared by the SNPN and the PLMN, detects the cell with the strongest signal on the frequency point and reads the system information SIB 1. If the system information SIB1 of the cell with the strongest signal only contains an effective SNPN ID list and no effective PLMN ID list exists, the cell is an SNPN cell, whether a cell PLMN-OnIntra frequency indicator exists or not is further checked, if so, whether a PLMN cell exists on the frequency point is judged, and then the PLMN cell on the current frequency point is further searched and the PLMN ID list in the system information is read. And if the cell PLMN-OnIntrafrequency indicator does not exist, directly searching the next frequency point. And after the UE finishes searching the network cells on each frequency point on the supported frequency band, selecting the resident PLMN cells according to the obtained all PLMN ID lists.

Referring to fig. 9, a flowchart for selecting a network cell for a PLMN mode UE according to an embodiment of the present invention is shown, where a PCI range indicating that PLMN cells exist on the same frequency is added in an SIB1 by using an information element PCIRange _ ForSharedPLMN as an example. As shown, the process of the method includes:

step S901, after triggering network selection, UE searches the strongest signal cell on each frequency point on the supported frequency band and reads the system message SIB1 of the strongest signal cell;

step S902, determining whether a valid PLMN ID list exists in a system message SIB1 of a cell with the strongest signal;

if so, go to step S903, otherwise, go to step S904.

Step S903, saving the corresponding PLMN ID list;

and performs step S906.

Step S904, determine whether there is cell PCIRange _ ForSharedPLMN in SIB 1;

if so, go to step S905, otherwise, go to step S906.

Step S905, UE searches other PLMN cells in the PCI range appointed by the cell on the same frequency point and acquires a corresponding PLMN ID list;

step S906, searching the network cell on the next frequency point.

In the method, after the selection of the network at the UE end is triggered, the UE searches the cell with the strongest signal quality on each frequency point on the supported frequency band and acquires the PLMN ID list broadcasted in the system information of the cell, and when a specific frequency point shared by SNPN and PLMN is searched, the cell with the strongest signal on the frequency point is detected and the system information SIB1 of the cell is read. If the system information SIB1 of the cell with the strongest signal only contains an effective SNPN ID list and no effective PLMN ID list exists, the cell is an SNPN cell, whether a cell PCIRange _ ForSharedPLMN exists or not is further checked, if so, whether a PLMN cell exists on the frequency point is judged, and then a PLMN cell in a specified PCI range on the current frequency point is further searched according to the cell PCIRange _ ForSharedPLMN and the PLMN ID list in the system information is read. And if the cell PLMN-OnIntrafrequency indicator does not exist, directly searching the next frequency point. And after the UE finishes searching the network cells on each frequency point on the supported frequency band, selecting the resident PLMN cells according to the obtained all PLMN ID lists.

It should be noted that the method flow described above is only an example of the method flow applicable to the embodiment of the present invention, and the method flow applicable to the embodiment of the present invention may further include other steps or reduce a part of the steps compared with the method flows shown in fig. 6 to 9.

Example 3

A method of selecting a network cell in the present invention is explained above, and an apparatus for performing the method of selecting a network cell is explained below.

Referring to fig. 10, an embodiment of the present invention provides a UE, including:

a first search module 1001, configured to trigger selection of a first network cell, and then search a cell with a strongest signal on a frequency point supported by the first network cell;

an indication receiving module 1002, configured to obtain indication information sent by a cell with the strongest signal when determining that the cell with the strongest signal on one frequency point belongs to a second network cell, and determine whether to search for a first network cell at a common frequency point;

a searching module 1003 again, configured to search, if yes, for the first network cell with the strongest signal at the common frequency point, and obtain a network identifier list corresponding to the first network cell with the strongest signal;

a cell selecting module 1004 configured to select a camped cell from the network identification list.

Optionally, the re-search module is further configured to:

The UE provided in the embodiment of the present invention and the UE provided in the embodiment 1 of the present invention belong to the same inventive concept, and various embodiments of the UE provided in the embodiment 1 may be applied to the UE in the embodiment to be implemented, and are not repeated here.

Referring to fig. 11, an embodiment of the present invention further provides a network device, including:

a common frequency point determining module 1101, configured to determine whether a first network cell sharing a frequency point with the second network cell exists;

and an indication sending module 1102, configured to send corresponding indication information to the user equipment UE according to the determination result, so that the UE determines whether to search the first network cell at the shared frequency point.

Optionally, the cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

The network side device provided in the embodiment of the present invention and the network side device provided in the embodiment 1 of the present invention belong to the same inventive concept, and various implementation modes applied to the network side device provided in the embodiment 1 may be applied to the network side device in the embodiment for implementation, and are not repeated here.

The user terminal UE and the network side device in the embodiment of the present application are described above from the perspective of the modular functional entity, and the user terminal UE and the network side device in the embodiment of the present application are described below from the perspective of hardware processing.

Example 4

Referring to fig. 12, another embodiment of a user equipment UE in the embodiment of the present application includes:

a processor 1200, a memory 1201, a transceiver 1202, and a bus interface 1203.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 may store data used by the processor 1200 in performing operations. The transceiver 1202 is used for receiving and transmitting data under the control of the processor 1200.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1200 and various circuits of memory represented by memory 1201 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 may store data used by the processor 1200 in performing operations.

The process disclosed in the embodiment of the present invention may be applied to the processor 1200, or implemented by the processor 1200. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1200. The processor 1200 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1201, and the processor 1200 reads information in the memory 1201 and completes steps of the signal processing flow in combination with hardware thereof.

Specifically, the processor 1200 is configured to read a program in the memory 1201 and execute:

and selecting a resident cell from the network identification list.

Optionally, the processor is further configured to:

The UE provided in the embodiment of the present invention and the UE provided in the embodiment 1 of the present invention belong to the same inventive concept, and various embodiments applied to the UE provided in the embodiment 1 may be applied to the UE in the embodiment to be implemented, and are not repeated here.

Referring to fig. 13, another embodiment of a network-side device in the embodiment of the present application includes:

a processor 1300, a memory 1301, a transceiver 1302, and a bus interface 1303.

The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1301 may store data used by the processor 1300 in performing operations. The transceiver 1302 is used to receive and transmit data under the control of the processor 1300.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 1300 and various circuits of the memory represented by the memory 1301 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1301 may store data used by the processor 1300 in performing operations.

The processes disclosed in the embodiments of the present invention may be implemented in the processor 1300 or implemented by the processor 1300. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1300. The processor 1300 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1301, and the processor 1300 reads information in the memory 1301 and completes the steps of the signal processing flow in combination with hardware thereof.

Specifically, the processor 1300 is configured to read the program in the memory 1301 and execute:

Optionally, the processor is further configured to:

Optionally, the cell information includes at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

The network side device provided in the embodiment of the present invention and the network side device provided in the embodiment 1 of the present invention belong to the same inventive concept, and the network side device provided in the embodiment of the present invention can be applied to various implementation manners of the network side device provided in the embodiment, and can be implemented by the network side device in the embodiment, and will not be described again here.

An embodiment of the present invention further provides a computer-readable storage medium, which includes instructions, when executed on a computer, cause the computer to execute the method for selecting a network cell provided in the foregoing embodiment.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

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

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules 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 be stored in a computer readable storage medium.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The technical solutions provided by the present application are introduced in detail, and the present application applies specific examples to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

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

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

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

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

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

Claims

1. A method for selecting a network cell is applied to a User Equipment (UE), and is characterized by comprising the following steps:

and selecting a resident cell from the network identification list.

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein after searching for the cell with the strongest signal on the frequency point supported by itself, further comprising:

4. The method of claim 1, wherein the obtaining the indication information sent by the strongest cell comprises at least one of the following steps:

5. The method of claim 1, wherein the indication information sent by the strongest cell comprises at least one of the following information:

6. The method of claim 5, wherein the determining whether to search for the first network cell in the common frequency point comprises:

7. The method of claim 1,

the first network cell is a Public Land Mobile Network (PLMN) cell, and the second network cell is a non-public network (SNPN) cell of an independent network; or

8. A method for selecting a network cell is applied to a network side device of a second network cell, and is characterized by comprising the following steps:

9. The method according to claim 8, wherein said sending corresponding indication information to the UE according to the determination result comprises:

10. The method of claim 8, further comprising:

11. The method of claim 10, wherein the cell information comprises at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

12. The method according to claim 8, wherein said sending the corresponding indication information to the user equipment UE comprises at least one of the following steps:

13. The method according to claim 8, wherein the corresponding indication information sent to the UE comprises at least one of:

14. The method of claim 13, wherein determining the corresponding indication comprises:

15. The method of claim 8,

16. A user terminal, UE, comprising: a memory and a processor;

wherein the memory is for storing a computer program;

the processor is used for reading the program in the memory and executing:

and selecting a resident cell from the network identification list.

17. The UE of claim 16, wherein the processor is further configured to:

18. The UE of claim 16, wherein the processor, after searching for the strongest cell on the frequency supported by itself, is further configured to:

19. The UE of claim 16, wherein the processor obtains the indication information sent by the strongest cell, and comprises at least one of the following steps:

20. The UE of claim 16, wherein the indication information sent by the strongest cell comprises at least one of:

21. The UE of claim 20 wherein the processor determining whether to search for the first network cell on a common frequency point comprises:

22. The UE of claim 16,

23. A network-side device, comprising: a memory and a processor;

wherein the memory is for storing a computer program;

the processor is used for reading the program in the memory and executing:

24. The network-side device of claim 23, wherein the processor sends corresponding indication information to the UE according to the determination result, and the indication information includes:

25. The network-side device of claim 23, wherein the processor is further configured to:

26. The network-side device of claim 25, wherein the cell information comprises at least one of:

network type of cell, PCI range of cell, cell activation/deactivation status.

27. The network-side device of claim 23, wherein the processor sends corresponding indication information to the UE, and comprises at least one of the following steps:

28. The network-side device of claim 23, wherein the corresponding indication information sent to the UE comprises at least one of the following:

29. The network-side device of claim 28, wherein the processor determines the corresponding indication information, comprising:

30. The network-side device of claim 23,

31. A user terminal, UE, comprising:

32. A network-side device, comprising:

33. A computer program medium, having a computer program stored thereon, wherein the program, when executed by a processor, performs the steps of the method according to any one of claims 1 to 7, or performs the steps of the method according to any one of claims 8 to 15.