CN115696472A

CN115696472A - Cell selection method, service method, terminal equipment and network side equipment

Info

Publication number: CN115696472A
Application number: CN202110827244.7A
Authority: CN
Inventors: 鲍炜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2023-02-03

Abstract

The application discloses a cell selection method, a service method, terminal equipment and network side equipment, which belong to the technical field of communication, and the cell selection method of the embodiment of the application comprises the following steps: under the condition that the low-capability terminal equipment is in a non-connection state, cell search is carried out; the low-energy terminal equipment executes target service through a first cell under the condition that the cell meeting the resident condition is not found and the first cell is found; and the first cell is a cell for forbidding the low-capability terminal equipment to access.

Description

Cell selection method, service method, terminal equipment and network side equipment

Technical Field

The present application belongs to the field of communications technologies, and in particular, to a cell selection method, a service method, a terminal device, and a network side device.

Background

There are various types of terminals in a communication network, such as: a Reduced Capability (RedCap) terminal and a non-RedCap terminal, wherein the RedCap terminal is a low cost terminal having a lower Capability than the non-RedCap terminal. The red map terminal can be subdivided into at least two types of 1rx terminal and 2rx terminal, which respectively correspond to a red map terminal with one receiving antenna and a terminal with two receiving antennas.

In the related art, different serving cells in a communication network may serve different types of terminals, and when a target cell does not support a certain type of terminal, the type of terminal regards the target cell as a barred cell (barred cell), and at this time, if the type of terminal cannot find a non-barred cell, the terminal cannot obtain any service, thereby affecting the communication performance of the terminal.

Disclosure of Invention

The embodiment of the application provides a cell selection method, a service method, a terminal device and a network side device, which can solve the problem that a terminal cannot obtain any service and further influences the communication performance of the terminal because the terminal cannot find a non-barred cell.

In a first aspect, a method for cell selection is provided, where the method includes:

under the condition that the low-capability terminal equipment is in a non-connection state, cell search is carried out;

the low-energy terminal equipment executes target service through a first cell under the condition that the cell meeting the resident condition is not found and the first cell is found;

and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing.

In a second aspect, a cell selection apparatus is provided, which is applied to a low-capability terminal, and includes:

the first searching module is used for searching a cell under the condition of a non-connection state;

a first executing module, configured to execute a target service through a first cell if the cell satisfying the camping condition is not found and the first cell is found;

In a third aspect, a service method is provided, where the method includes:

the network side equipment provides target service for the low-capability terminal equipment through a first cell, wherein the first cell is a cell which forbids the low-capability terminal equipment to access.

In a fourth aspect, a service apparatus is provided, which is applied to a network device, and includes:

the first service module is used for providing target service for the low-capability terminal equipment through a first cell, wherein the first cell is a cell which forbids the low-capability terminal equipment to access.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

A sixth aspect provides a terminal device, including a processor and a communication interface, where the communication interface is configured to perform cell search when the terminal device is in a non-connected state; and performing a target service through the first cell in a case where the cell satisfying the camping condition is not found and the first cell is found.

In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the method according to the first aspect.

In an eighth aspect, a network side device is provided, which includes a processor and a communication interface, where the communication interface is configured to provide a target service to a low-capability terminal device through a first cell, where the first cell is a cell to which access of the low-capability terminal device is prohibited.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the third aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions, to implement a method according to the first aspect, or to implement a method according to the third aspect.

In an eleventh aspect, there is provided a computer program/program product stored on a non-volatile storage medium, the program/program product being executable by at least one processor to perform the steps of the cell selection method according to the first aspect or to perform the steps of the service method according to the third aspect.

In the embodiment of the application, the low-power terminal equipment searches the cell under the condition of non-connection state; the low-energy terminal equipment executes target service through a first cell under the condition that the cell meeting the residence condition is not found and the first cell is found; and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing. Thus, even if the low-capability terminal equipment cannot find a non-barred cell, the terminal can obtain data interaction related to the target service through the first cell.

Drawings

FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

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

FIG. 3 is a flow chart of a service method provided by an embodiment of the present application;

fig. 4 is a block diagram of a cell selection apparatus according to an embodiment of the present application;

fig. 5 is a structural diagram of a service apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally used herein in a generic sense to distinguish one element from another, and not necessarily from another element, such as a first element which may be one or more than one. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th generation,6g communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an enodeb, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home enodeb, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

With the development of mobile communication technology, more and more terminal types are provided, and the terminal types served by different network side devices may be different, for example: a low-capability terminal (reccap UE) is introduced into R17 (3GPP Release 17), and the terminal capability of the reccap terminal is lower than the minimum terminal capability specified by the R15 NR protocol, so that a network side device under the R16 or R15 standard cannot provide any service to the reccap terminal under the R17 standard, in other words, the reccap terminal regards a cell under the R16 or R15 standard as a barred cell (barred cell).

Thus, if none of the cells near the red map terminal satisfy the camping condition of the red map terminal, for example: if the signal quality is not satisfactory or access is prohibited, the recap terminal will not be able to determine a campeable cell, resulting in that the recap terminal will not be able to obtain any service.

In the embodiment of the present application, when the recmap terminal cannot find any non-barred cell, the recmap terminal may select one or more barred cells, so as to execute the target service through the selected barred cells. That is to say, in the embodiment of the present application, in the case that the red beacon terminal cannot find any non-barred cell, the red beacon terminal may still obtain a limited service (limited service) through the barred cell.

The cell selection method, the service method, the terminal device and the network side device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings by some embodiments and application scenarios thereof.

Referring to fig. 2, which is a flowchart illustrating a cell selection method according to an embodiment of the present application, where an execution subject of the cell selection method may be a low-capability terminal, as shown in fig. 1, the cell selection method may include the following steps:

step 201, the low-power terminal device performs cell search when the terminal device is in the unconnected state.

In a specific implementation, the low-capability terminal device may be a RedCap terminal introduced in R17, and the performing of the cell search may include a cell selection and reselection mechanism specified in R16, for example: if all cells detected by a UE do not satisfy the camping condition (e.g., the signal quality is not satisfactory or is bar), the UE cannot determine a campeable cell. At this time, the UE enters an arbitrary Cell Selection state (Any Cell Selection state). In this state, the UE cannot obtain communication service, and only performs cell selection and reselection to try to find a cell where the UE can camp.

Of course, in practical applications, the low-power terminal device and the cell search mechanism may also be terminal devices and cell search mechanisms defined in subsequent R17, R18, and other standards that may appear. For convenience of description, in the following embodiment, a low-capability terminal device is a reccap terminal, and a cell search mechanism is a cell selection and reselection mechanism specified in R16, which is taken as an example for illustration and is not limited herein.

In addition, the non-connected state may include a Radio Resource Control (RRC) idle (idle) state or an RRC inactive (inactive) state.

Step 202, the low-energy terminal device executes a target service through a first cell under the condition that the cell meeting the residence condition is not found and the first cell is found; and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing.

In a specific implementation, the finding, by the low-capability terminal device, of a cell that satisfies the camping condition may be understood as: and the cells near the low-capability terminal equipment are all forbidden to reside (or access) by the low-capability terminal equipment, or the signal quality of the cells in which the low-capability terminal equipment is not forbidden to reside does not meet the requirements of the low-capability terminal equipment, and the like.

Correspondingly, when the low-power terminal device discovers the first cell, it can be understood that the low-power terminal device discovers that a cell in which the low-power terminal device is forbidden to reside exists, and the signal quality of the cell meets the requirement of the low-power terminal device.

In addition, the first cell prohibits the access or the camping of the low-capability terminal device, but the first cell may allow the access or the camping of a general terminal device, for example: the first cell may be a cell in which a cell Barred indication (cell Barred IE) in a Master Information Block (MIB) is set to non-Barred. And the above-mentioned general terminal device may also be referred to as a non-low-capability terminal device (non-red cap). In practical application, some cells in the network system may support access by the RedCap terminal, and some cells may not support access by the RedCap terminal.

In the prior art, when all cells detected by a rectap terminal do not satisfy a camping condition, the rectap terminal cannot determine a campeable cell, and at this time, the rectap terminal cannot obtain a communication service.

The difference between the embodiment of the present application and the prior art is that, if all cells detected by the red beacon terminal do not satisfy the camping condition, the red beacon terminal may perform a search based on a cell selection and reselection mechanism to attempt to find a cell that can camp on or a first cell, and when a cell that satisfies the camping condition is not found and the first cell is found, the target service may still be performed through the first cell.

As an optional embodiment, the target service includes at least one of:

earthquake and Tsunami Warning System (ETWS);

commercial Mobile Alert System (CMAS) service;

emergency call service.

In a specific implementation, when a disaster or an emergency occurs, a cell of the mobile communication system may broadcast ETWS and CMAS information, that is, the ETWS service and the CMAS service belong to a broadcast service, and at this time, the rdcap terminal performs a target service through the first cell, which may be understood as: and the RedCap terminal monitors the first cell to obtain the broadcast message related to the ETWS service and/or the CMAS service.

It should be noted that, in the existing R15 Cell bar mechanism, the UE is not allowed to reside in a bar Cell to receive ETWS and CMAS information. At this time, for a cell in barred state, since the cell knows that no UE resides, it may not send ETWS and CMAS information. Moreover, even if there are some cells (for example, cells that do not prohibit non-RedCap residence or access) transmitting ETWS and CMAS information around the RedCap terminal, the RedCap terminal cannot receive the ETWS and CMAS information because the RedCap terminal regards the cells as barred cells.

In the embodiment of the present application, for a first cell to which a reicap terminal or all terminals are prohibited to access/camp on, the first cell still broadcasts ETWS and CMAS information, and the prohibited reicap terminal still can monitor a broadcast message of the first cell to obtain a broadcast message related to the ETWS service and/or the CMAS service.

In addition, in the case that the target service includes the emergency call service, the foregoing red beacon terminal performs the target service through the first cell, which may be understood as: and the RedCap terminal carries out data transmission related to the emergency call service based on the first cell.

Of course, in practical applications, the first cell may also provide other types of services for the reccap terminal according to the requirements of different services, and is not limited in particular herein.

As an optional implementation, the first cell includes at least one of a first type cell and a second type cell;

the first type cell is a cell which forbids the access of the low-capability terminal equipment and meets the cell selection criterion of the low-capability terminal equipment;

the second type cell is a cell which meets at least one of the following conditions in the first type cell:

the Mobile terminal equipment belongs to a Public Land Mobile Network (PLMN) corresponding to the low-energy terminal equipment;

a Tracking Area (TA) of the broadcast does not belong to a TA Area prohibited by the low-capability terminal device.

In implementation, the second type cell may be understood as a special case of the first type cell, that is, the second type cell is the first type cell satisfying at least one of the following conditions:

the PLMN belongs to the corresponding PLMN of the low-power terminal equipment;

the broadcasted TA area does not belong to the TA area forbidden by the low-capability terminal equipment.

The PLMN corresponding to the low-capability terminal device may include at least one of the following PLMNs: a PLMN in a PLMN (Selected PLMN), a Registered PLMN (Registered PLMN), and an Equivalent PLMN list (Equivalent PLMN list) Selected by the low-energy terminal device; in addition, the TA region prohibited by the low-power terminal device may be understood as: TA region in list of prohibited Tracking Areas (list of "Forbidden Tracking Areas") of low-power terminal devices. The above-mentioned cell selection criterion that satisfies the low-capability terminal device may be understood as: meet the cell selection criteria specified by standard communication protocols, such as: the cell selection criterion in 3GPP protocol number TS36.304 or TS38.304 is met.

It should be noted that, compared to performing the target service through another cell of the first type cell, the situation that the reccap terminal performs the target service through the second type cell can avoid roaming charges and the like. At this time, the RedCap terminal may implement preferential selection of the target service to be performed through the second type cell by:

the low-energy terminal equipment executes target service through the first cell under the condition that the cell meeting the residence condition is not found and the first cell is found, wherein the target service comprises at least one of the following items:

the low-energy terminal equipment executes target service through the second type cell under the condition that the cell meeting the resident condition is not found and the second type cell is found;

and the low-energy terminal equipment executes target service through the first type cell under the condition that the cell meeting the residence condition and the second type cell are not found and the first type cell is found.

In an implementation, the above case that the low-power terminal device finds the cell that satisfies the camping condition and finds the second type cell may include: the low-capability terminal device discovers the second type cell and the other cells except the second type cell in the first type cell. At this time, the low-capability terminal device preferentially selects the second type cell to perform the target service.

Accordingly, when the low-power terminal device does not find the cell satisfying the camping condition and the second type cell and finds the first type cell, it may be understood that: the low-capability terminal device only discovers cells of the first type of cell other than the second type of cell. At this time, the low-capability terminal device can perform the target service only through the other cells except for the second type cell among the first type cells.

Further, in a case where the low-capability terminal device does not find the cell satisfying the camping condition and the second type cell, and finds the first type cell, after performing the target service through the first type cell, the method further comprises:

the low-energy terminal equipment searches all the supported frequency points and all the cells on the RAT;

and the low-energy terminal equipment executes the target service through the second type cell under the condition that the cell meeting the resident condition is not found and the second type cell is found.

In this embodiment, after the rdcap terminal performs the target service through the first type cell, or during the process that the rdcap terminal performs the target service through the first type cell, the rdcap terminal may still continuously or periodically search all supported frequency points and all cells on the RAT, so as to find a more suitable cell.

In this way, in the event that a second type cell is subsequently discovered by the recap terminal, the target service is performed by the second type cell.

Of course, in the case where the redmap terminal finds the second cell, it may camp on the second cell to obtain the service including the target service.

That is, the priority of the second cell may be higher than the priority of the second type cell, and the priority of the second type cell may be higher than the priority of the first type cell.

Under this embodiment, the timely discovery of RedCap terminal or seek more suitable district to in time obtain the service through this more suitable district, can promote the quality of service of RedCap terminal.

As an optional implementation manner, in the case that the low-capability terminal device is in a non-connected state, performing cell search includes:

the low-energy terminal equipment searches cells on all supported frequency points and all Radio Access Technologies (RAT);

the low-energy terminal equipment executes target service through a first cell under the condition that the cell meeting the residence condition is not found and the first cell is found, and the method comprises the following steps:

and the low-energy terminal equipment executes target service through the first cell under the condition that the first cell is found out and the cells on all the supported frequency points and all the RATs do not meet the residence conditions.

In this embodiment, the low-power terminal device searches for all cells on the supported frequency points and all RATs when the terminal device is in the non-connected state, so as to try to find a second cell meeting the camping condition or try to find a first cell. Thus, if a second cell satisfying the camping condition is found, the target service is executed through the second cell; and if any cell meeting the resident condition is not found and the first cell is found, executing the target service through the first cell.

The searching for all cells on all supported frequency points and all RATs may include common-frequency cell reselection.

As an optional implementation manner, in the case that the low-power terminal device performs the target service through the first cell, the method further includes:

and the low-capability terminal equipment ignores fourth indication information received from the first cell, wherein the fourth indication information is used for indicating that the low-capability terminal equipment allows or disallows intra-frequency cell selection or reselection.

In a specific implementation, the fourth indication information may be an intra Freq Reselection (intra Freq Reselection) flag in the MIB introduced in the R15 NR protocol. Wherein, in the R15 NR protocol, the following Cell bar mechanism is introduced:

in some cases, in order to prohibit the UE from accessing or attaching to the local cell, the cell may broadcast a cellgarred indication in the system information. If the UE reads the system information and finds that cellgarred IE is set to barred, the UE will avoid selecting or reselecting to the cell within a future period of time (with a preset time length). When the UE finds that the cellgarred IE is set as barred, the UE determines whether other cells of the frequency point of the cell are selected or reselected according to an intra FreqReselection (intra FreqReselection) mark in the MIB. The intrafreqReselection defines the parameters related to the reselection of the cells with the same frequency, if the intrafreqReselection IE is set to not allowed, the UE is not allowed to select or reselect other cells of the frequency point of the cell in a period of time (the time length is a preset value) in the future; otherwise, the UE is allowed to select or reselect to other cells of the frequency point of the cell.

In other words, in the related art, when cellgarred IE of a cell is set to barred, the UE needs to consider intrafreq selection IE in the system information and does not need to consider other IEs, and in the case that intrafreq selection IE is set to not allowed, intra-frequency cell selection or reselection is not performed.

In this embodiment of the present application, if the rdcap terminal selects the first cell to execute the target service, even if the first cell sends, to the rdcap terminal, fourth indication information indicating whether the first cell prohibits selecting or reselecting another cell of the frequency point where the cell is located, the rdcap terminal may ignore the fourth indication information, and continue to search for all cells on all supported frequency points and all RATs, so as to find a more suitable second cell, and in the case that a more suitable second cell is found, the rdcap terminal may reselect the second cell as the serving cell.

The fourth instruction information may be newly defined instruction information other than the intrafreq selection, and is not particularly limited herein.

Optionally, in a case that the low-capability terminal device does not find a cell satisfying the camping condition and finds a first cell, after performing the target service through the first cell, the method further includes:

and the low-capability terminal equipment is resided on a second cell under the condition that the second cell in which the low-capability terminal equipment is not prohibited to reside is found.

The second cell does not prohibit the RetCapture terminal from residing, so that compared with the first cell, the RedCap terminal can conveniently reside, and the service is more suitable for the RedCap terminal.

Wherein, the second cell may include: at least one of a suitable cell (suitable cell) and an acceptable cell (acceptable cell) matched with the low-capability terminal device.

The suitable cell belongs to the PLMN corresponding to the low-capability terminal equipment, meets the cell selection criterion of the low-capability terminal equipment, and the broadcasted TA area does not belong to the TA area forbidden by the low-capability terminal equipment;

the acceptable cell meets the cell selection criteria of the low-capability terminal equipment.

Specifically, the suitable cell refers to a cell in which the RedCap terminal can camp and obtain normal service. The suitable cell meets at least the following conditions:

1) The cell belongs to at least one of the following PLMNs of the reccap terminal:

a PLMN in a PLMN Selected by the UE (Selected PLMN), a Registered PLMN (Registered PLMN), and an Equivalent PLMN list (Equivalent PLMN list);

2) The cell satisfies cell selection criteria such as: cell selection criteria in 3GPP protocol number TS36.304 or TS 38.304;

3) The cell is not barred from camping;

4) The broadcasted TA information of a cell does not belong to Forbidden TA Areas (list of "Forbidden Tracking Areas").

And the acceptable cell refers to a cell where the rectap terminal can camp and obtain limited services (initiate an emergency call, receive ETWS and CMAS messages). The acceptable cell meets the following minimum requirements for initiating an emergency call and receiving ETWS and CMAS messages:

1) The cell is not barred from camping;

2) The cell meets cell selection criteria, such as: the 3GPP protocol number is the cell selection criterion in TS36.304 or TS 38.304.

In this embodiment, after the rdcap terminal executes the target service through the first cell, or in the process that the rdcap terminal monitors the broadcast message on the first cell, the rdcap terminal may continuously or periodically search cells on all supported frequency points and all RATs, so that the rdcap terminal resides on the second cell in the presence of the second cell, and the second cell provides the service including the target service for the rdcap terminal, so as to improve the communication performance of the rdcap terminal.

In practical applications, when a reccap terminal resides on an acceptable cell, the reccap terminal can only obtain limited services such as initiating an emergency call, receiving ETWS and CMAS messages, and when the reccap terminal resides on a suitable cell, the reccap terminal can also obtain more services besides the limited services, for example: video calls, etc.

Further, the reccap terminal can preferentially reside in a suitable cell in the following manner, so that the reccap terminal can timely acquire more comprehensive services:

the low-capability terminal device resides on a second cell in the case of finding the second cell in which the low-capability terminal device is not prohibited from residing, and the method comprises at least one of the following steps:

the low-energy terminal equipment resides on the suitable cell under the condition that the suitable cell is found;

the low-capability terminal device camps on the acceptable cell if the suitable cell is not found and the acceptable cell is found.

In this embodiment, the priority of the suitable cell is higher than that of the acceptable cell, so that the low-capability terminal device preferentially resides in the suitable cell to obtain more comprehensive service.

In practical applications, some second cells supporting access of the recap terminal may exist in the network, and some first cells not supporting access of the recap terminal may exist in the network. The terminal device may determine whether the searched cell is the first cell or the second cell based on an indication on the network side.

As an optional implementation manner, the discovering the first cell by the low-power terminal device includes at least one of the following:

the low-capability terminal equipment receives first indication information sent by the first cell, wherein the first indication information is used for indicating that the first cell forbids the access of the low-capability terminal;

the low-capability terminal equipment does not receive second indication information sent by the first cell, wherein the second indication information is used for indicating that the first cell allows the low-capability terminal to access.

Correspondingly, in the case that the low-energy terminal device receives third indication information sent by a second cell, it may be determined that the low-energy terminal device finds the second cell where the low-energy terminal device is not barred from camping, where the third indication information is used to indicate that the second cell allows the low-energy terminal to access.

In a specific implementation, the first indication information, the second indication information, and the third indication information may be information carried in a broadcast message or system information, and specifically, the first indication information may be understood as: a disable indication (RedCapbar) indicating a first preset value (e.g., barred); accordingly, the second indication information and/or the third indication information may be understood as: a disable indication (RedCapbar) indicating a second preset value (e.g., notbard).

In wireless communication, a RedCap bar for a RedCap terminal can be introduced, so that when the RedCap bar indication is not carried in a cell broadcast message or the RedCap bar is carried in the cell broadcast message and indicates that the RedCap bar is a first preset value (for example, barred), the RedCap terminal is prohibited from accessing in the cell; otherwise, the recmap terminal is not barred from accessing in the cell.

Of course, the RedCap bar may include a plurality of types to correspond to the RedCap terminals of different capabilities, respectively, such as the RedCap terminal of the 1 receive antenna (1 rx) and the RedCap terminal of the 2 receive antenna (2 rx) may correspond to different RedCap bars.

In this way, the same cell may indicate that a certain type of terminal is prohibited from camping or accessing through a specific information field in a system message or a broadcast message, for example: the RedCap bar of a cell may indicate at least one of the following information:

forbidding 1rx reccap UE to camp on;

forbidding 2rx reload UE to camp on;

prohibiting non-RedCap UE camping;

all UEs are prohibited from camping.

In the embodiment of the application, the low-power terminal equipment performs cell search under the condition of a non-connection state; the low-energy terminal equipment executes target service through a first cell under the condition that the cell meeting the residence condition is not found and the first cell is found; and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing. Thus, even if the low-capability terminal equipment cannot find a non-barred cell, the terminal can obtain data interaction related to the target service through the first cell.

Referring to fig. 3, which is a flowchart of a service method provided in an embodiment of the present application, an execution subject of the service method may be a network side device, and as shown in fig. 3, the service method may include the following steps:

step 301, a network side device provides a target service to a low-capability terminal device through a first cell, where the first cell is a cell to which the low-capability terminal device is prohibited from accessing.

In a specific implementation, the first cell has the same meaning as that of the first cell in the embodiment of the method shown in fig. 2, and the first cell may not prohibit access of the ordinary terminal device, or prohibit access of the ordinary terminal device, which is not described herein again.

Wherein, under the condition that the first cell forbids all terminal devices to access, the first cell can still perform the broadcast of the ETWS service and the CMAS service message. In addition, whether the first cell prohibits access to all terminal devices or only low-capability terminal devices, the first cell may also provide emergency call services to low-capability terminal devices.

In addition, the low-capability terminal device has the same meaning as the reccap terminal in the method embodiment shown in fig. 2, and is not described herein again.

Optionally, the first cell includes at least one of a first type cell and a second type cell;

the PLMN corresponding to the low-energy terminal equipment is belonged to;

In a specific implementation, the first type cell and the second type cell have the same meanings as those of the first type cell and the second type cell in the embodiment of the method shown in fig. 2, which are not described herein again.

Corresponding to the method embodiment shown in fig. 2, in a case that the first cell includes the first type cell and the second type cell, the network side device may preferentially provide the target service to the low-capability terminal device through the second type cell.

In practical application, the RedCap terminal may report a detection result (e.g., mobility, a non-edge area located in which cells) related to the RRM measurement relaxation criterion to the network side device, and at this time, the network side device may determine which cells satisfy a condition of the first type cell or the second type cell of the RedCap terminal according to the detection result, and preferentially provide a target service to the RedCap terminal through the second type cell.

Certainly, the network side device may directly issue an RRC measurement relaxation criterion to the RedCap terminal, and the RedCap terminal autonomously measures parameters such as mobility, whether the cell is located at a cell edge, and the like, determines which cells meet the conditions of the first-type cell or the second-type cell according to the measurement result, and reports the determination result to the network side device, and the network side device determines, according to the determination result, that the target service is preferentially provided to the RedCap terminal through the second-type cell.

Optionally, before the network-side device provides the target service to the low-capability terminal device through the first cell, the method further includes:

and the network side equipment sends first indication information to the low-capability terminal equipment, wherein the first indication information is used for indicating that the first cell forbids the access of the low-capability terminal.

In a specific implementation, the first indication information has the same meaning and function as the first indication information in the embodiment of the method shown in fig. 2, and the first indication information may also be carried in a broadcast message or a system message, which is not described herein again.

Optionally, the target service comprises at least one of:

ETWS service;

a CMAS service;

emergency call service.

In a specific implementation, the first cell may broadcast the ETWS and CMAS service messages, and the reccap terminal monitors the broadcast message of the first cell to obtain the ETWS and CMAS service messages. Alternatively, the reccap terminal may initiate the emergency call using the first cell when the emergency call needs to be initiated.

It should be noted that, unlike the prior art, the following are provided: in case that the first cell is forbidden to access or camp on all cells, the first cell may still broadcast ETWS and CMAS service messages.

Optionally, after the network-side device provides the target service to the low-capability terminal device through the first cell, the method further includes:

and the network side equipment provides service for the low-capability terminal equipment through a second cell under the condition that the second cell in which the low-capability terminal equipment is not forbidden to reside is determined to exist.

In a specific implementation, the second cell has the same meaning as the second cell in the embodiment of the method shown in fig. 2, and compared to the first cell, the network side device preferentially provides a service for the retrieve cp terminal through the second cell, which is not described herein again.

Optionally, the second cell comprises a suitable cell and/or an acceptable cell matched with the low-capability terminal device;

the acceptable cell meets the cell selection criteria of the low-capability terminal device.

In a specific implementation, the suitable cell and the acceptable cell have the same meanings as those of the suitable cell and the acceptable cell in the embodiment of the method shown in fig. 2, and compared with the acceptable cell, the network side device may preferentially provide a service for the RedCap terminal through the suitable cell, which is not described herein again.

Optionally, before the network side device provides a service to the low-capability terminal device through a second cell in a case that it is determined that the second cell does not prohibit the low-capability terminal device from camping on exists, the method further includes:

and the network side equipment sends third indication information to the low-energy terminal equipment, wherein the third indication information is used for indicating the second cell to allow the low-energy terminal to access.

In a specific implementation, the third indication information has the same meaning and function as the third indication information in the method embodiment shown in fig. 2, and is not described herein again.

and the network side equipment sends fourth indication information to the low-capability terminal equipment, wherein the fourth indication information is used for indicating that the low-capability terminal equipment allows or disallows intra-frequency cell selection or reselection.

In a specific implementation, the fourth indication information has the same meaning and function as the fourth indication information in the method embodiment shown in fig. 2, and when the network side device sends the fourth indication information to the rdcap terminal, the rdcap terminal may ignore the fourth indication information, so that when the target service is executed through the first cell, the same-frequency cell reselection may still be performed, so as to find a more suitable serving cell, which is not described herein again.

The service method provided in the embodiment of the present application corresponds to the cell selection method shown in fig. 2, and similar beneficial effects can be obtained, and for avoiding repetition, details are not repeated here.

To facilitate understanding of the cell selection method and the service method provided in this embodiment, the following four specific embodiments are taken as examples to illustrate the cell selection method and the service method provided in this embodiment:

example 1

Step 1, IDLE UE carries out cell selection or reselection, and can not detect any suitable cell or acceptable cell;

step 2, detecting N first cells (including a first type cell and a second type cell) by the IDLE UE;

and 3, the UE selects a second type cell to monitor EWTS and CMAS messages on the second type cell and/or initiate an emergency call.

In this embodiment, the IDLE UE indicates an IDLE-state red beacon terminal.

It should be noted that, when the UE selects the second type cell to monitor the EWTS and CMAS messages on the second type cell and/or initiate an emergency call, the UE may ignore the intra-frequency reselection indication broadcast by the selected first cell (that is, it is considered that intra-frequency reselection is allowed), or the UE may ignore the intra-frequency reselection indications broadcast by all the first type cells and/or the second type cell, where the intra-frequency reselection indication is the fourth indication information in the embodiment of the method shown in fig. 2, and is not described herein again.

Example 2

step 2, the IDLE UE detects N first cells (only one of the first type cells and the second type cells);

and 3, the UE selects one detected first type cell or second type cell to monitor the EWTS and CMAS messages on the first type cell or the second type cell and/or initiate an emergency call.

In this embodiment, the UE may also ignore the co-frequency reselection indication broadcasted by the first cell providing the target service, or the UE may ignore the co-frequency reselection indications broadcasted by all the first type cells and/or the second type cells, which is not described herein again.

Example 3

In the process that the UE executes the target service through any first cell or after executing the target service, the UE searches all supporting frequency points and cells on the RAT, and selects corresponding survivable cells for residing once the survivable cells are found; or, the UE searches for all supported frequency points and cells on the RAT, and once finding an acceptable cell, selects a corresponding acceptable cell to camp on without the acceptable cell.

In this embodiment, the UE may also ignore the common-frequency reselection prohibition indication broadcasted by the residential cell, or the UE may ignore the common-frequency reselection prohibition indications broadcasted by all the first type cells and/or the second type cells, which is not described herein again.

Example 4

In the process that the UE executes the target service through the first type cell or after executing the target service, the UE searches all supporting frequency points and cells on the RAT, once finds the second type cell, selects the corresponding second type cell under the condition of no susitable cell and acceptable cell, and executes the target service through the second type cell.

In this embodiment, the UE preferentially selects the second type cell in the first cell to perform the target service through the second type cell.

It should be noted that, an implementation subject of the cell selection method provided in the embodiment of the present application may be a cell selection apparatus, or a control module in the cell selection apparatus for implementing the cell selection method. In the embodiment of the present application, a cell selection apparatus is taken as an example to execute a cell selection method, and the cell selection apparatus provided in the embodiment of the present application is described.

Referring to fig. 4, a cell selection apparatus 400 according to an embodiment of the present invention is applied to a low-capability terminal, as shown in fig. 4, the cell selection apparatus 400 includes:

a first searching module 401, configured to perform cell search when the mobile terminal is in a non-connected state;

a first executing module 402, configured to execute a target service through a first cell if a cell satisfying a camping condition is not found and the first cell is found;

Optionally, the first cell does not prohibit an access of a general terminal device.

the PLMN corresponding to the low-energy terminal equipment is belonged to;

Optionally, the first executing module 402 is configured to execute at least one of the following:

performing a target service through the second type cell in a case where a cell satisfying a camping condition is not found and the second type cell is found;

performing a target service through the first type cell if the cell satisfying the camping condition and the second type cell are not found and the first type cell is found.

Optionally, the cell selection apparatus 400 further includes:

the third searching module is used for searching all the cells on the supporting frequency points and all the RATs;

a second executing module, configured to execute the target service through the second type cell if the cell meeting the camping condition is not found and the second type cell is found.

Optionally, the discovering the first cell by the low-power terminal device includes at least one of:

Optionally, the target service includes at least one of:

an ETWS service;

a CMAS service;

an emergency call service.

Optionally, the first searching module 401 is specifically configured to:

searching all the cells on the supported frequency points and all the RATs;

the first execution module is specifically configured to:

and under the condition that the cells on all the supported frequency points and all the RATs do not meet the resident condition and a first cell is found, executing the target service through the first cell.

Optionally, the cell selecting apparatus 400 further includes:

and ignoring fourth indication information received from the first cell, wherein the fourth indication information is used for indicating that the low-energy terminal equipment allows or disallows intra-frequency cell selection or reselection.

Optionally, the cell selecting apparatus 400 further includes:

the second searching module is used for searching all the cells on the supported frequency points and all the RATs;

a camping module for camping on a second cell where the low-power terminal device is not prohibited from camping on the second cell, in case of discovering the second cell.

Optionally, the second cell includes a suitable cell and/or an acceptable cell matched with the low-capability terminal device;

Optionally, the resident module is specifically configured to execute at least one of the following:

camping on the suitable cell if the suitable cell is found;

camping on the acceptable cell if the suitable cell is not found and the acceptable cell is found.

Optionally, the discovering, by the low-power terminal device, a second cell where the low-power terminal device is not prohibited to camp on includes:

and the low-energy terminal equipment receives third indication information sent by the second cell, wherein the third indication information is used for indicating the second cell to allow the low-energy terminal to access.

The cell selection apparatus provided in the embodiment of the present application can perform each process in the method embodiment shown in fig. 2, and can obtain the same beneficial effects, and for avoiding repetition, details are not described herein again.

The cell selection apparatus in the embodiment of the present application may be an apparatus, an apparatus or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a television (television), a teller machine (teller machine), a self-service machine (kiosk), or the like, and the embodiments of the present application are not limited in particular.

It should be noted that, in the service method provided in the embodiment of the present application, the execution subject may be a service device, or a control module in the service device for executing the service method. In the embodiment of the present application, a service device executing a service method is taken as an example to describe the service device provided in the embodiment of the present application.

Referring to fig. 5, a service apparatus 500 provided in the embodiment of the present application is applied to a network side device, and as shown in fig. 5, the service apparatus 500 includes:

a first service module 501, configured to provide a target service to a low-capability terminal device through a first cell, where the first cell is a cell to which the low-capability terminal device is prohibited from accessing.

the PLMN corresponding to the low-energy terminal equipment is belonged to;

Optionally, in a case that the first cell includes the first type cell and the second type cell, the first service module 501 is specifically configured to:

and preferentially providing target service to the low-capability terminal equipment through the second type cell.

Optionally, the service device 500 further includes:

a first sending module, configured to send first indication information to the low-capability terminal device, where the first indication information is used to indicate that the first cell prohibits access of the low-capability terminal.

Optionally, the target service includes at least one of:

an ETWS service;

a CMAS service;

emergency call service.

Optionally, the service device 500 further includes:

a second service module, configured to provide a service to the low-capability terminal device through a second cell in which the low-capability terminal device is not prohibited from camping on, if it is determined that the second cell exists.

Optionally, in the case that the network-side device determines that there is a second cell in which the low-power terminal device is not prohibited to camp, the service apparatus 500 further includes:

and a second sending module, configured to send third indication information to the low-energy terminal device, where the third indication information is used to indicate that the second cell allows the low-energy terminal to access.

Optionally, the service device 500 further includes:

a third sending module, configured to send fourth indication information to the low-energy terminal device, where the fourth indication information is used to indicate that the low-energy terminal device allows or disallows intra-frequency cell selection or reselection.

The service device provided in the embodiment of the present application can perform each process in the method embodiment shown in fig. 3, and can obtain the same beneficial effects, and for avoiding repetition, the details are not described herein again.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or instruction stored on the memory 602 and executable on the processor 601, for example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the processes of the cell selection method embodiment shown in fig. 2, and can achieve the same technical effect. When the communication device 600 is a network-side device, the program or the instruction is executed by the processor 601 to implement the processes of the service method embodiment shown in fig. 3, and the same technical effect can be achieved, and is not described herein again to avoid repetition.

The embodiment of the application also provides terminal equipment, which comprises a processor and a communication interface, wherein the communication interface is used for carrying out cell search under the condition of a non-connection state; and performing a target service through a first cell in case that a cell satisfying a camping condition is not found and the first cell is found; and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing. The terminal may be a low-power terminal, and the terminal embodiment corresponds to the method embodiment at the low-power terminal side, and each implementation process and implementation manner of the method embodiment may be applicable to the terminal embodiment and may achieve the same technical effect. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal device for implementing the embodiment of the present application.

The terminal device 700 is specifically a low-capability terminal, and the terminal device 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and the like.

Those skilled in the art will appreciate that the terminal device 700 may further include a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 710 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system. The terminal device structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

It should be understood that, in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts of a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data in the processor 710; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

The radio frequency unit 701 is configured to perform cell search when the low-power terminal device is in a non-connected state;

a radio frequency unit 701, further configured to execute a target service through a first cell if a cell satisfying a camping condition is not found and the first cell is found; and the first cell is a cell for prohibiting the low-capability terminal equipment from accessing.

the PLMN corresponding to the low-energy terminal equipment is belonged to;

Optionally, the performing, by the radio frequency unit 701, in a case that a cell satisfying the camping condition is not found and a first cell is found, performing a target service through the first cell, where the cell satisfying the camping condition is not found, includes at least one of:

performing a target service through the first type cell in a case where the cell satisfying the camping condition and the second type cell are not found and the first type cell is found.

Optionally, when the radio frequency unit 701 executes the target service executed by the first type cell under the condition that the cell meeting the camping condition and the second type cell are not found and the first type cell is found, the radio frequency unit 701 is further configured to:

searching all the cells on all the supported frequency points and all the RATs;

performing the target service through the second type cell if a cell satisfying a camping condition is not found and the second type cell is found.

Optionally, the radio frequency unit 701 discovers the first cell, including at least one of:

a radio frequency unit 701 receives first indication information sent by the first cell, where the first indication information is used to indicate that the first cell prohibits access of a low-capability terminal;

the radio frequency unit 701 does not receive second indication information sent by the first cell, where the second indication information is used to indicate that the first cell allows a low-capability terminal to access.

Optionally, the target service includes at least one of:

an ETWS service;

a CMAS service;

emergency call service.

Optionally, the performing, by the radio frequency unit 701, cell search when the low-capability terminal device is in the non-connected state includes:

searching all the cells on the supported frequency points and all the RATs;

the performing, by the radio frequency unit 701, in a case that a cell satisfying the camping condition is not found and a first cell is found, performing a target service through the first cell, including:

Optionally, in a case that the radio frequency unit 701 executes the target service through the first cell, the radio frequency unit 701 is further configured to ignore fourth indication information received from the first cell, where the fourth indication information is used to indicate that the low-energy terminal device allows or disallows intra-frequency cell selection or reselection.

Optionally, when the radio frequency unit 701 does not find a cell that meets the camping condition and finds a first cell, after the target service is executed by the first cell, the radio frequency unit 701 is further configured to:

searching all the cells on the supported frequency points and all the RATs;

camping on a second cell on which the low-power terminal device is not barred in case the second cell is found.

Optionally, the camping on the second cell performed by the radio frequency unit 701 in the case of discovering the second cell where the low-power terminal device is not prohibited from camping on the second cell includes at least one of the following:

camping on the suitable cell if the suitable cell is found;

Optionally, the discovering performed by the radio frequency unit 701 that does not prohibit the second cell where the low-power terminal device is camped on includes:

the radio frequency unit 701 receives third indication information sent by the second cell, where the third indication information is used to indicate that the second cell allows a low-capability terminal to access.

The terminal device 700 provided in the embodiment of the present application can implement each process executed by the low-power terminal device in the method embodiment shown in fig. 2, and can obtain the same beneficial effects, and for avoiding repetition, the details are not repeated here.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the communication interface is configured to provide a target service to a low-capability terminal device through a first cell, where the first cell is a cell that prohibits access of the low-capability terminal device. The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network device 800 includes: antenna 801, radio frequency device 802, baseband device 803. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the rf device 802 receives information via the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted and transmits the information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The above band processing means may be located in the baseband means 803, and the method performed by the network side device in the above embodiment may be implemented in the baseband means 803, where the baseband means 803 includes a processor 804 and a memory 805.

The baseband device 803 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one of the chips is, for example, the processor 804, and is connected to the memory 805 to call up a program in the memory 805 to execute the network device operations shown in the above method embodiments.

The baseband device 803 may further include a network interface 806, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 802.

Specifically, the network side device according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 805 and capable of being executed on the processor 804 are called by the processor 804 to execute the method executed by each module in the service apparatus shown in fig. 5, and achieve the same technical effect, which is not described herein for avoiding repetition.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the process of the method embodiment shown in fig. 2 or fig. 3 is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the method embodiment shown in fig. 2 or fig. 3, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. A method for cell selection, comprising:

and the first cell is a cell for forbidding the low-capability terminal equipment to access.

2. The cell selection method of claim 1, wherein the first cell does not prohibit access by a general terminal device.

3. The cell selection method according to claim 1 or 2, wherein the first cell comprises at least one of a first type cell and a second type cell;

the PLMN belongs to a Public Land Mobile Network (PLMN) corresponding to the low-energy terminal equipment;

the broadcasted tracking area TA does not belong to the TA area forbidden by the low capability terminal device.

4. The cell selection method according to claim 3, wherein the low-capability terminal device performs the target service through the first cell if the cell satisfying the camping condition is not found and the first cell is found, and the method comprises at least one of the following steps:

the low-energy terminal equipment executes target service through the second type cell under the condition that the cell meeting the residence condition is not found and the second type cell is found;

5. The cell selection method according to claim 4, wherein in a case where the low-capability terminal device does not find the cell satisfying the camping condition and the second type cell and finds the first type cell, the method further comprises, after performing the target service through the first type cell:

the low-energy terminal equipment searches cells on all supported frequency points and all radio access type RATs;

and the low-energy terminal equipment executes the target service through the second type cell under the condition that the cell meeting the residence condition is not found and the second type cell is found.

6. The cell selection method according to claim 1 or 2, wherein the discovering of the first cell by the low-capability terminal device comprises at least one of:

and the low-capability terminal equipment does not receive second indication information sent by the first cell, wherein the second indication information is used for indicating that the first cell allows the low-capability terminal to access.

7. The cell selection method of claim 1 or 2, wherein the target service comprises at least one of:

an earthquake and tsunami warning system ETWS service;

commercial mobile alert system CMAS service;

emergency call service.

8. The cell selection method according to claim 1 or 2, wherein the cell search is performed by the low-capability terminal device in a non-connected state, and the method comprises:

the low-energy terminal equipment searches all supporting frequency points and all cells on the RAT;

the low-power terminal equipment executes target service through the first cell under the condition that the cell meeting the resident condition is not found and the first cell is found, and the method comprises the following steps:

9. The cell selection method according to claim 1 or 2, wherein in case the low capability terminal device performs a target service through the first cell, the method further comprises:

10. The cell selection method according to claim 1 or 2, wherein in a case where the low-capability terminal device does not find a cell satisfying the camping condition and finds a first cell, the method further comprises, after performing the target service through the first cell:

11. The cell selection method according to claim 10, wherein the second cell comprises a suitable cell and/or an acceptable cell matching the low-capability terminal device;

12. The cell selection method of claim 11, wherein the low-capability terminal device camps on a second cell on which the low-capability terminal device is not prohibited from camping on if the second cell is found, and wherein the method comprises at least one of:

13. The cell selection method of claim 10, wherein the discovering of the second cell in which the low-capability terminal device is not barred from camping by the low-capability terminal device comprises:

14. A cell selection apparatus, applied to a low-capability terminal, the cell selection apparatus comprising:

15. The cell selection apparatus of claim 14, wherein the first cell does not prohibit access by a general terminal device.

16. The cell selection apparatus of claim 14 or 15, wherein the first cell comprises at least one of a first type cell and a second type cell;

17. The cell selection apparatus of claim 16, wherein the first performing module is configured to perform at least one of the following:

18. The cell selection apparatus according to claim 14 or 15, further comprising:

a camping module, configured to camp on a second cell on which the low-power terminal device is not barred when the second cell is found.

19. A method of servicing, the method comprising:

the network side equipment provides target service for the low-capability terminal equipment through a first cell, wherein the first cell is a cell for forbidding the low-capability terminal equipment to access.

20. The serving method of claim 19, wherein the first cell does not prohibit normal terminal device access.

21. The serving method of claim 19 or 20, wherein the first cell comprises at least one of a first type cell and a second type cell;

the broadcasted tracking area TA does not belong to a TA area forbidden by said low capability terminal device.

22. The serving method of claim 21, wherein in a case that the first cell includes the first type cell and the second type cell, the providing, by the network-side device, a target service to a low-capability terminal device through the first cell includes:

and the network side equipment preferentially provides the target service to the low-capability terminal equipment through the second type cell.

23. The serving method according to claim 19 or 20, wherein before the network-side device provides the target service to the low-capability terminal device through the first cell, the method further comprises:

24. Service method according to claim 19 or 20, characterized in that said target service comprises at least one of the following:

an earthquake and tsunami warning system ETWS service;

commercial mobile alert system CMAS service;

emergency call service.

25. The service method according to claim 19 or 20, wherein after the network-side device provides the target service to the low-capability terminal device through the first cell, the method further comprises:

and the network side equipment provides service for the low-capability terminal equipment through a second cell under the condition that the second cell where the low-capability terminal equipment is not forbidden to reside is determined to exist.

26. The serving method of claim 25, wherein the second cell comprises a suitable cell and/or an acceptable cell matched to the low-capability terminal device;

27. The serving method according to claim 25, wherein before the network-side device provides a service to the low-capability terminal device through the second cell when determining that the second cell in which the low-capability terminal device is not barred exists, the method further comprises:

and the network side equipment sends third indication information to the low-energy terminal equipment, wherein the third indication information is used for indicating that the second cell allows the low-energy terminal to access.

28. The service method of claim 19, wherein before the network-side device provides the target service to the low-capability terminal device through the first cell, the method further comprises:

29. A service apparatus, applied to a network side device, includes:

30. The serving apparatus of claim 29, wherein the first cell does not prohibit access by a general terminal device.

31. The serving apparatus of claim 29 or 30, wherein the first cell comprises at least one of a first type cell and a second type cell;

32. The serving apparatus of claim 31, wherein in a case that the first cell includes the first type cell and the second type cell, the first serving module is specifically configured to:

33. The service apparatus according to claim 29 or 30, further comprising:

34. A terminal device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the cell selection method of any one of claims 1 to 13.

35. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the service method according to any one of claims 19 to 28.

36. A readable storage medium, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the method for cell selection according to any one of claims 1 to 13, or the serving method according to any one of claims 19 to 28.