CN116114307A

CN116114307A - Cell reselection restriction removing method and device

Info

Publication number: CN116114307A
Application number: CN202180002614.1A
Authority: CN
Inventors: 刘晓菲
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2023-05-12
Also published as: WO2023035198A1

Abstract

The application discloses a cell reselection restriction removal method and a device thereof, which judge whether the reselection restriction is removed by the reselection restriction cell according to the acquired reselection restriction reason of the reselection restriction cell. In the application, the terminal equipment can adopt different restriction release schemes for different barred cell reasons, so that restriction release is more accurate, the problem that a certain cell and other same-frequency cells are continuously switched between released restriction and re-restriction can be solved, and resource waste caused by repeated restriction can be avoided.

Description

Cell reselection restriction removing method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for releasing cell reselection restriction.

Background

Because a certain cell and other same-frequency cells are regarded as cells (barred cells) which are forbidden to be accessed, the cells are restricted and excluded from reselection candidate cells, if a cell (highest ranked cell) with highest rank under a certain frequency point changes in the related art, the reselection restriction of all cells which are stopped from reselection before is released, and the cells are re-participated in reselection. However, the signal quality jitter of the cells in some frequency bands is serious and frequent, highest ranked cell is changed frequently, and a certain cell and other co-frequency cells may be continuously switched between the unrestricted and the re-restricted cells.

Disclosure of Invention

The embodiment of the application provides a cell reselection restriction removing method and device, which can be applied to a communication system and are used for solving the problem that a certain cell and other same-frequency cells can be continuously removed from restriction and switched between the restriction and the restriction again.

In a first aspect, an embodiment of the present application provides a method for releasing a reselection restriction of a cell, which is performed by a terminal device, where the method includes: determining a reselection limiting reason for reselecting the candidate cell; determining whether to release the reselection restriction for the reselection-restricting cell. The method for releasing the restriction of the reselection candidate cell according to the first aspect of the present application may further have the following technical characteristics:

in one implementation, the determining whether to release the reselection restriction for the reselection-restricted cell includes: in response to a reselection restriction release condition being met, it is determined whether to perform reselection restriction release on the reselection restriction cell.

In one implementation, the reselection restriction removal condition includes at least one of: the highest ranking cell change and/or signal quality meets a first set condition; the position of the terminal equipment meets a second setting condition; the moving speed of the terminal equipment meets a third setting condition; the terminal device determines a system message update of the reselection-restricted cell.

In one implementation, the manner of determining the first, second, and third set conditions includes at least one of: protocol specification; broadcasting system message configuration; proprietary signaling configuration.

In one implementation, the signal quality of the highest ranked cell meeting the first setting condition includes at least one of: the duration of the change of the signal quality of the highest ranking cell is longer than a second set duration; the variation of the signal quality of the cell with the highest rank is smaller than a first preset threshold value; the change speed of the signal quality of the cell with the highest ranking is larger than a second preset threshold value; and the signal quality of the cell with the highest rank is larger than a third preset threshold value.

In one implementation, the second setting condition includes: the position of the terminal equipment exceeds the designated position range of the terminal equipment.

In one implementation, the third setting condition includes: the moving speed of the terminal equipment is larger than a moving speed threshold value.

In one implementation, the reselection limit is due to the cell being an access-barred cell.

In one implementation, the step of determining the access-forbidden cell includes: and receiving a first indication message of the network equipment, and determining the cell forbidden to be accessed according to the first indication message.

In one implementation, the step of determining the access-forbidden cell includes: and determining the cell forbidden to be accessed according to the cell incapable of acquiring the second indication message of the network equipment.

In one implementation, the method further comprises: and responding to the first indication message according to the network equipment to determine that the cell is the cell forbidden to be accessed, wherein the reselection limit is not released.

In the embodiment of the application, the terminal equipment can adopt different restriction release schemes for different barred cell reasons, so that the restriction release is more accurate, the problem that a certain cell and other same-frequency cells are continuously switched between the released restriction and the re-restriction can be solved, and the resource waste caused by repeated restriction can be avoided.

In a second aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing part or all of the functions of the terminal device in the method described in the first aspect, for example, the function of the device may be provided with a function in part or all of the embodiments of the present application, or may be provided with a function of implementing any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, each device may include a transceiver module and a processing module in a structure, where the processing module is configured to support the device to perform the corresponding function in the method. The transceiver module is used for supporting communication between the device and other equipment. The apparatus may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the computer programs and data necessary for the communication apparatus.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In a third aspect, embodiments of the present application provide a communications device comprising a processor, which when calling a computer program in memory, performs the method of the first aspect described above.

In a fourth aspect, embodiments of the present application provide a communication device comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In a fifth aspect, embodiments of the present application provide a computer readable storage medium storing instructions for use by a terminal device as described above, which when executed, cause the terminal device to perform the method of the first aspect.

In a sixth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a seventh aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a terminal device to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above-mentioned method. In one possible design, the chip system further includes a memory for holding computer programs and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In an eighth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a network device to implement the functionality involved in the second aspect, e.g. to determine or process at least one of data and information involved in the above-described method. In one possible design, the chip system further includes a memory to hold computer programs and data necessary for the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a ninth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a network device to implement the functionality referred to in the third aspect, e.g. to determine or process at least one of data and information referred to in the above method. In one possible design, the chip system further includes a memory to hold computer programs and data necessary for the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a tenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flowchart of a method for releasing cell reselection restriction provided in the embodiment of the present application;

fig. 3 is a flowchart of a method for releasing cell reselection restriction provided in the embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

For ease of understanding, the terms referred to in this application are first introduced.

1. Main information block (Master Information Block MIB)

MIB messages are transmitted in a physical broadcast channel (Physical Broadcast Channel, PBCH) without scrambling using a Radio Network Temporary Identity (RNTI), and MIB is received on the PBCH by a device for network entry. MIB is transmitted once every 40 ms, repeated every 10 ms, carrying downlink bandwidth, number of transmit antennas; system frame number (System Frame Number, SFN); physical hybrid automatic repeat request indicator channel (Physical Hybrid Automatic Repeat Request indicator channel, PHICH) configuration.

2. System information block 1 (System Information Block 1, SIB 1)

Mainly carrying cell access and cell selection related information, scheduling and window information of other system information blocks (System Information Block Type, SIBs), etc. The SIB is broadcast in two different ways: the first is broadcast by SIB1 message period, and the second is broadcast by a plurality of system information (SystemInformation, SI) message periods other SIBs than SIB 1. The period of the SIB1 message is fixed equal to 80ms.

In order to better understand a cell reselection restriction release method disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applicable is first described below.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one network device and one terminal device, and the number and form of devices shown in fig. 1 are only used as examples and not limiting to the embodiments of the present application, and may include two or more network devices and two or more terminal devices in practical applications. The communication system shown in fig. 1 is exemplified as including a network device 101 and a terminal device 102.

It should be noted that the technical solution of the embodiment of the present application may be applied to various communication systems. For example: a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation,5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems, etc. It should also be noted that the side link in the embodiments of the present application may also be referred to as a side link or a through link.

The network device 101 in the embodiment of the present application is an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an access network device, which may be an evolved NodeB (eNB), a transmission point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, or the like. The network device 101 may be a core network device, which in the embodiment of the present application may be a device that communicates with an access network device, and the core network device may be a 5G core network device, for example, an access and mobility management function (Access and Mobility Management Function, AMF), or may be a packet core evolution (EvolvedPacket Core, EPC) device, for example, a mobility management entity (Mobility Management Entity, MME). The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device. The network device provided in this embodiment of the present application may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the network device, for example, a base station, where functions of part of the protocol layers are centrally controlled by the CU, and functions of part or all of the protocol layers are distributed in the DU, so that the CU centrally controls the DU.

The terminal device 102 in this embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be an automobile with a communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

It may be understood that, the communication system described in the embodiments of the present application is for more clearly describing the technical solution of the embodiments of the present application, and is not limited to the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

The method and apparatus for releasing cell reselection restrictions provided in the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a method for releasing cell reselection restriction according to an embodiment of the present application. As shown in fig. 2, the method is performed by the terminal device and may include, but is not limited to, the following steps:

s21, determining the reason of the reselection limitation of the reselection limiting cell.

In the embodiment of the present application, the reason for the reselection restriction of the reselection restricted cell is that the cell is a barred cell (barred cell). In some implementations, a cell and other cells are considered barred cells because the system message indicates directly as barred cells or reserved cells. In some implementations, the terminal device may be regarded as a barred cell, for example, the terminal device may not acquire the MIB message, for example, the terminal device may not acquire the SIB1 message, for example, the terminal device may not acquire the TAC in the acquired SIB1 message, and so on.

As one possible implementation manner, determining a cell to which access is prohibited includes: the terminal device may receive a first indication message of the network device, and determine that the cell is a barred cell according to the first indication message. The first indication message may be a cell status indication for indicating to the terminal device that a certain cell is to be used as an access forbidden cell or a reserved cell reserved for other terminal devices. The terminal device may exclude the indicated cell from the reselection candidate cell for a set time, e.g., 300s, according to the cell status indication. In the embodiment of the present application, the terminal device may further consider the same-frequency other cells of the reselected target cell as barred cells. That is, the terminal device may not use a certain cell and other cells of the same frequency as reselection candidate cells for a period of time (300 s) due to barred cells.

As another possible implementation manner, determining a cell to which access is prohibited includes: in the cell reselection process, the terminal device may determine to reselect the target cell based on the reselection condition and the R criterion. Further, the terminal device may read SIB1 of the target cell, and determine whether the target cell is a suitable cell (useable cell) based on parameters in SIB 1. In this embodiment of the present application, if the terminal device cannot obtain the second indication message sent by the network device of the target cell, the target cell and/or other cells with the same frequency reselected by the terminal device will be regarded as barred cells. The second indication message may include MIB message, SIB1 message, TAC in SIB1 message, or the like.

S22, determining whether to release the reselection limit of the reselection limit cell.

In the embodiment of the present application, after determining the reason for the reselection limitation of the reselection limitation cell, the terminal device may determine whether to release the reselection limitation of the reselection limitation cell based on the reason for the reselection limitation of the reselection limitation cell.

In some implementations, in response to determining that the reselection limit is due to: the terminal device cannot acquire MIB or SIB1 message or TAC of the reselection target cell and is regarded as a cell of the barred cell, and the terminal device can release the limitation of the reselection limiting cell. For example, the reselection limiting time period (300 s) may not be satisfied in the reselection limiting cell, and the limitation of the reselection limiting cell may be released in advance.

In other implementations, in response to determining that the reselection limit is due to: and determining that the cell is regarded as the cell of the barred cell according to the first indication message of the network equipment, wherein the terminal equipment does not release the limitation of the reselection limiting cell. For example, the reselection limiting time period (300 s) may not be satisfied in the reselection limiting cell, and the limitation of the reselection limiting cell may not be released in advance. Or when the reselection limiting cell satisfies the reselection limiting time period (300 s), the limitation of the reselection limiting cell is released.

The cells are indicated to be barred cells by the system message for a period of time, in which case, if highest ranked cell changes is caused by a signal quality change or the like, the restriction is released, i.e. the cell or frequency point that was previously restricted from being reselected will be rejoined to the candidate list, evaluated and ordered, and SIB1 is read for final check (final check), which still remains barred cell, if necessary, thus introducing unnecessary SIB1 read power consumption and access delay.

Referring to fig. 3, fig. 3 is a flowchart of a method for releasing cell reselection restriction according to an embodiment of the present application. As shown in fig. 3, the method is performed by the terminal device and may include, but is not limited to, the following steps:

s31, determining the reason of the reselection limitation of the reselection limiting cell.

The description of step S31 may be referred to the description of the related content in each embodiment of the present application, and will not be repeated here.

S32, in response to meeting the reselection restriction removing condition, determining whether to execute reselection restriction removing to the reselection restriction cell.

In the embodiment of the present application, the reselection restriction removing condition includes at least one of:

the highest ranking cell changes and/or the signal quality of the highest ranking cell meets a first set condition;

the position of the terminal equipment meets a second setting condition;

the moving speed of the terminal equipment meets a third setting condition;

the terminal device determines a system message update for the reselection-restricted cell.

Optionally, the manner of determining the first setting condition, the second setting condition and the third setting condition includes at least one of:

protocol specification;

broadcasting system message configuration;

proprietary signaling configuration.

Optionally, when the highest ranked cell changes, and the signal quality of the highest ranked cell meets a first setting condition, where the first setting condition includes at least one of:

in some implementations, when the highest ranked cell changes and the changed highest ranked cell quality meets the first set condition, the changed highest ranked cell signal quality is stable. Wherein the first setting condition includes, but is not limited to, at least one of:

(1) The signal quality change of the highest ranked cell continues beyond a set time, which may be configured by the network device by broadcasting a system message or proprietary signaling, or may be specified by the protocol.

For example, the change of the highest ranking cell triggers a timer, which is released after expiration, the timer value may be specified by the protocol or may be configured by the network device by signaling.

(2) The signal quality change amount of the highest ranked cell does not exceed the threshold value. For example, the threshold value may be configured by the network device via broadcast system messages or proprietary signaling, or may be specified by the protocol.

(3) The signal quality of the highest ranked cell does not change at a rate exceeding a rate threshold, where the rate threshold may be configured by the network device via broadcast system messages or proprietary signaling, or may be specified by the protocol.

(4) The highest ranked cell signal quality exceeds a quality threshold, where the threshold may be configured by the network device via broadcast system messages or proprietary signaling, or may be specified by the protocol.

Accordingly, when the highest ranked cell meets only a first set condition, the signal quality of the highest ranked cell needs to meet a set amount of fluctuations, wherein the first set condition includes, but is not limited to, at least one of:

(1) The signal quality of the highest ranked cell varies beyond a set time range, wherein the set time can be configured by the network device through broadcast system messages or proprietary signaling, and can also be specified by a protocol.

(2) The signal quality of the highest ranked cell varies by more than a threshold value, which may be configured by the network device via broadcast system messages or proprietary signaling, or may be specified by the protocol.

(3) The signal quality of the highest ranked cell varies at a rate exceeding a rate threshold, where the rate threshold may be configured by the network device via broadcast system messages or proprietary signaling, or may be specified by the protocol.

Optionally, the location of the terminal device satisfies a second setting condition, including but not limited to at least one of: the terminal device can acquire the current position of the terminal device, compares the current position with the position range of the terminal device, and considers that the terminal device meets a third setting condition if the current position exceeds the position range. The location range of the terminal device may be configured by the network device through broadcasting system messages or proprietary signaling, or may be specified by a protocol.

Optionally, the moving speed of the terminal device satisfies a third setting condition, including but not limited to at least one of the following: the terminal device may acquire the movement speed of the terminal device, compare the movement speed with a movement speed threshold of the terminal device, and if the movement speed of the terminal device exceeds the movement speed threshold, consider that the terminal device meets a fourth setting condition. The movement speed threshold of the terminal equipment can be configured by the network equipment through broadcasting system messages or proprietary signaling, and can also be specified by a protocol.

Optionally, the terminal device determines a system message update of the reselection-restricted cell. The network device may update the system message by informing the serving cell that the system message is updated by the neighbor cell through an Xn message, and transmitting the indication information to the terminal device by the serving cell through a broadcast system message or a proprietary signaling. For example, when a system message (MIB SIB 1) of a certain cell is changed, the adjacent cell is informed by an Xn message, and the serving cell maintains a cell list of the changed system message, and sends indication information to the terminal by the system message or a proprietary signaling. The terminal device receiving the system message update may determine that a system message of a cell for which reselection restriction is performed due to the first indication message has changed. Wherein when it is determined that the system message has changed, the restriction of the reselection-restricted cell is released, or when it is determined that the system message has changed and the first indication message has changed, the restriction of the reselection-restricted cell is released.

In the embodiment of the present application, satisfying the reselection restriction release condition includes: at least one of the highest ranking cell changing, the signal quality of the highest ranking cell satisfying a first set condition, the location of the terminal device satisfying a second set condition, the speed of movement of the terminal device satisfying a third set condition, and the terminal device determining a system message update of the reselection-limiting cell.

In some implementations, in response to determining that the reselection limit is due to: since the terminal device cannot acquire the MIB message of the reselection target cell, or cannot acquire the SIB1 message, or at least one of the TAC missing in the acquired SIB1 message is regarded as a cell of the barred cell, the terminal device can release the restriction of the reselection restriction cell if the reselection restriction release condition is satisfied. For example, when the reselection restriction time period is not satisfied by the reselection restriction cell (300 s), the restriction of the reselection restriction cell may be released in advance when the reselection restriction release condition is satisfied.

Example 1: in cell reselection, if a cell and other cells are subjected to reselection restriction due to at least one of failure of the terminal to acquire a cell MIB message, failure to acquire an SIB1 message, or loss of TAC in the acquired SIB1 message, the reselection restriction is removed when a reselection restriction release condition is satisfied.

Wherein the reselection limiting may include, but is not limited to, at least one of:

the signal quality of the cell with the highest ranking meets a first setting condition;

the position of the terminal equipment meets a second setting condition;

the moving speed of the terminal equipment meets a third setting condition;

Note that, in example 1, the first setting condition includes, but is not limited to, at least one of:

the signal quality change of the highest ranked cell is within a set time frame.

The signal quality of the highest ranked cell varies by more than a threshold value.

The signal quality change speed of the highest ranked cell exceeds the speed threshold.

The set time, the threshold value, and the speed threshold value may be respectively configured by the network device through broadcasting a system message or proprietary signaling, or may be specified by a protocol.

Example 2: in cell reselection, if a certain cell and other cells are subjected to reselection restriction due to at least one of failure of the terminal to acquire a cell MIB message, failure to acquire an SIB1 message, or lack of TAC in the acquired SIB1 message, the reselection restriction is deleted when the highest ranked cell changes and a reselection restriction release condition is satisfied.

Wherein the reselection restriction release condition may include, but is not limited to, at least one of:

the position of the terminal equipment meets a second setting condition;

The moving speed of the terminal equipment meets a third setting condition;

Note that, in example 2, the first setting condition includes, but is not limited to, at least one of:

the signal quality of the highest ranked cell changes continuously for more than a set time.

The signal quality change amount of the highest ranked cell does not exceed the threshold value.

The signal quality change speed of the highest ranked cell does not exceed the speed threshold.

The highest ranked cell signal quality exceeds a certain quality threshold.

The set time, the threshold value, the speed threshold value and the quality threshold value may be respectively configured by the network device through broadcasting a system message or proprietary signaling, or may be specified by a protocol.

The foregoing is merely exemplary and is not intended to limit the present application.

In other implementations, in response to determining that the reselection limit is due to: and determining that the cell is regarded as a cell of the barred cell according to the first indication message of the network equipment, wherein the terminal equipment does not release the limitation of the reselection limiting cell under the condition that the reselection limiting condition is met.

For example, the reselection limiting time period (300 s) may not be satisfied in the reselection limiting cell, and the limitation of the reselection limiting cell may not be released in advance. Or when the reselection limiting cell meets the reselection limiting duration (300 s), the limitation of the reselection limiting cell is released.

Example 1: and determining that the cell is regarded as the cell of the barred cell by the cell and other cells according to the first indication message of the network equipment, wherein when the cell with the highest ranking is changed, the reselection limit is not released.

Example 2: and determining that the cell is regarded as the cell of the barred cell by the cell and other cells according to the first indication message of the network equipment, and when a certain condition is met, not releasing the reselection limit.

Example 3: and determining that the cell is regarded as the cell of the barred cell by the cell and other cells according to the first indication message of the network equipment, and when the cell with the highest rank is changed and a certain condition is met, not releasing the reselection limit.

That is, a certain cell and other cells are regarded as barred cells due to the indication of the first indication message (system message), and are not considered as reselection candidate cells for a period of time, and the reselection restriction is not released, i.e., whether or not the reselection restriction release condition is satisfied, the certain cell and other cells cannot release the reselection restriction.

In other implementations, in response to determining that the reselection limit is due to: according to the first indication message of the network equipment, determining that the cell is regarded as the cell of the barred cell, and under the condition that the reselection restriction removal condition is met, the terminal equipment needs to wait for the restriction duration of the reselection restriction cell to reach the set duration (300 s), and then can remove the reselection restriction of the reselection restriction cell.

In other implementations, in response to determining that the reselection limit is due to: and determining that the cell is regarded as the cell of the barred cell according to the first indication message of the network equipment, and when the reselection limiting condition is met, if the terminal equipment receives the system message update, releasing the reselection limiting condition of the reselection limiting cell.

In the embodiments provided in the present application, the methods provided in the embodiments of the present application are described from the angles of the terminal device, the core network device, and the access network device, respectively. In order to implement the functions in the methods provided in the embodiments of the present application, the terminal device, the core network device, and the access network device may include a hardware structure, a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of hardware and software modules.

Fig. 4 is a schematic structural diagram of a communication device 400 according to an embodiment of the present application. The communication device 400 shown in fig. 4 may comprise a processing module 41.

The communication apparatus 400 may be a terminal device (such as the terminal device in the foregoing method embodiment), or may be an apparatus in the terminal device, or may be an apparatus that can be used in a matching manner with the terminal device.

The communication apparatus 400 is a terminal device (such as the terminal device in the foregoing method embodiment), and includes:

a processing module 41 for: determining a reselection limiting reason of the reselection limiting cell; and determining whether to release the reselection restriction from the reselection-restricted cell.

The processing module 41 is further configured to: in response to the reselection restriction release condition being satisfied, it is determined whether to perform reselection restriction release for the reselection restriction cell.

The reselection restriction release condition includes at least one of: the highest ranking cell change and/or signal quality meets a first set condition; the position of the terminal equipment meets a second setting condition; the moving speed of the terminal equipment meets a third setting condition; the terminal device determines a system message update for the reselection-restricted cell.

The manner of the first setting condition, the second setting condition and/or the third setting condition comprises at least one of the following: protocol specification; broadcasting system message configuration; proprietary signaling configuration.

The signal quality of the highest ranked cell meeting the first set condition comprises at least one of: the duration of the change in signal quality of the highest ranked cell is longer than a second set duration; the variation of the signal quality of the cell with the highest ranking is smaller than a first preset threshold value; the change speed of the signal quality of the cell with the highest ranking is larger than a second preset threshold value; the signal quality of the highest ranked cell is greater than a third preset threshold.

A second setting condition comprising: the location of the terminal device is beyond the specified location range of the terminal device.

A third setting condition including: the movement speed of the terminal device is greater than the movement speed threshold.

The reason for the reselection limitation is that the cell is an access forbidden cell.

The processing module 41 includes: and receiving a first indication message of the network equipment, and determining a cell forbidden to be accessed according to the first indication message.

The processing module 41 includes: and determining a cell forbidden to be accessed according to the cell incapable of acquiring the second indication message of the network equipment.

The processing module 41 is further configured to: in response to determining that the reselection restriction is due to determining, from the first indication message of the network device, that the cell is an access barred cell, the reselection restriction is not released.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication device 500 according to an embodiment of the present application. The communication device 500 may be a network device, a terminal device (such as the terminal device in the foregoing method embodiment), a chip system, a processor or the like that supports the network device to implement the foregoing method, or a chip, a chip system, a processor or the like that supports the terminal device to implement the foregoing method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communication device 500 may include one or more processors 51. The processor 51 may be a general purpose processor or a special purpose processor or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 500 may further include one or more memories 52, on which a computer program 54 may be stored, and the processor 51 executes the computer program 54, so that the communication device 500 performs the method described in the above method embodiments. Optionally, the memory 52 may also have data stored therein. The communication device 500 and the memory 52 may be provided separately or may be integrated.

Optionally, the communication device 500 may further comprise a transceiver 55, an antenna 56. The transceiver 55 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 55 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 57 may also be included in the communication device 500. The interface circuit 57 is for receiving code instructions and transmitting to the processor 51. The processor 51 executes the code instructions to cause the communication device 500 to perform the method described in the method embodiments described above.

The communication apparatus 500 is a terminal device (such as the terminal device in the foregoing method embodiment): the processor 51 is configured to execute step S21 in fig. 2, step S31 in fig. 3, and step S32.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 51. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 51 may have a computer program 53 stored thereon, the computer program 53 running on the processor 51 may cause the communication device 500 to perform the method described in the method embodiments above. The computer program 53 may be solidified in the processor 51, in which case the processor 51 may be implemented in hardware.

In one implementation, the communications apparatus 500 can include circuitry that can implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a terminal device (such as the terminal device in the foregoing method embodiment), but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 5. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structure of the chip shown in fig. 6. The chip shown in fig. 6 includes a processor 61 and an interface 62. Wherein the number of processors 61 may be one or more, and the number of interfaces 62 may be a plurality.

For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present application (such as the terminal device in the foregoing method embodiment):

the processor 61 is used for step S21 and step S22 in fig. 2, and step S31 and step S32 in fig. 3.

For the case where the chip is used to implement the functions of the network device in the embodiments of the present application:

Optionally, the chip further comprises a memory 63, the memory 63 being used for storing the necessary computer programs and data.

Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The present application also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part 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 comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions described in accordance with embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in this application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features of the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationship shown in each table in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which are not limited in this application. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present application, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for releasing cell reselection restriction, which is suitable for a terminal device, the method comprising:

determining a reselection limiting reason of the reselection limiting cell;

determining whether to release the reselection restriction for the reselection-restricting cell.
The method of claim 1, wherein the determining whether to de-reselect the reselection-restricted cell comprises:

in response to a reselection restriction release condition being met, it is determined whether to perform reselection restriction release on the reselection restriction cell.
The method of claim 2, wherein the reselection restriction removal condition comprises at least one of:

the highest ranking cell change and/or signal quality meets a first set condition;

the position of the terminal equipment meets a second setting condition;

the moving speed of the terminal equipment meets a third setting condition;

the terminal device determines a system message update of the reselection-restricted cell.
A method according to claim 3, wherein the manner in which the first, second and third set conditions are determined comprises at least one of:

protocol specification;

broadcasting system message configuration;

Proprietary signaling configuration.
A method according to claim 3, wherein the signal quality of the highest ranked cell meeting a first defined condition comprises at least one of:

the duration of the change of the signal quality of the highest ranking cell is longer than a second set duration;

the variation of the signal quality of the cell with the highest rank is smaller than a first preset threshold value;

the change speed of the signal quality of the cell with the highest ranking is larger than a second preset threshold value;

and the signal quality of the cell with the highest rank is larger than a third preset threshold value.
A method according to claim 3, wherein the second set of conditions comprises:

the position of the terminal equipment exceeds the designated position range of the terminal equipment.
A method according to claim 3, wherein the third set of conditions comprises:

the moving speed of the terminal equipment is larger than a moving speed threshold value.
The method according to any of claims 1-7, wherein the reselection limiting factor is that a cell is an access barred cell.
The method of claim 8, wherein the step of determining the access-barred cell comprises:

And receiving a first indication message of the network equipment, and determining the cell forbidden to be accessed according to the first indication message.
The method of claim 8, wherein the step of determining the access-barred cell comprises:

and determining the cell which cannot acquire the second indication message of the network equipment.
The method according to claim 9, wherein the method further comprises:

and responding to the fact that the cell is determined to be the cell forbidden to be accessed according to the first indication message, wherein the reselection limit is not released.
A communication apparatus adapted for use in a terminal device, the apparatus comprising:

a processing module, configured to determine a reselection limiting reason for a reselection limiting cell; the method comprises the steps of,

determining whether to release the reselection restriction for the reselection-restricting cell.
The apparatus of claim 12, wherein the processing module is further configured to:

in response to a reselection restriction release condition being met, it is determined whether to perform reselection restriction release on the reselection restriction cell.
The apparatus of claim 13, wherein the reselection restriction removal condition comprises at least one of:

The highest ranking cell change and/or signal quality meets a first set condition;

the position of the terminal equipment meets a second setting condition;

the moving speed of the terminal equipment meets a third setting condition;

the terminal device determines a system message update of the reselection-restricted cell.
The apparatus of claim 14, wherein the manner in which the first, second, and third settings are determined comprises at least one of:

protocol specification;

broadcasting system message configuration;

proprietary signaling configuration.
The apparatus of claim 14, wherein the signal quality of the highest ranked cell meeting a first defined condition comprises at least one of:

the duration of the change of the signal quality of the highest ranking cell is longer than a second set duration;

the variation of the signal quality of the cell with the highest rank is smaller than a first preset threshold value;

the change speed of the signal quality of the cell with the highest ranking is larger than a second preset threshold value;

and the signal quality of the cell with the highest rank is larger than a third preset threshold value.
The apparatus of claim 14, wherein the terminal device location satisfies a second set condition, comprising:

The position of the terminal equipment exceeds the designated position range of the terminal equipment.
The apparatus of claim 14, wherein the third set condition comprises:

the moving speed of the terminal equipment is larger than a moving speed threshold value.
The apparatus according to any of claims 12-18, wherein the reselection limiting factor is that a cell is an access barred cell.
The apparatus of claim 19, wherein the processing module comprises:

and receiving a first indication message of the network equipment, and determining the cell forbidden to be accessed according to the first indication message.
The apparatus of claim 19, wherein the processing module comprises:

and determining the cell forbidden to be accessed according to the cell incapable of acquiring the second indication message of the network equipment.
The apparatus of claim 20, wherein the processing module is further configured to:

and responding to the first indication message according to the network equipment to determine that the cell is the cell forbidden to be accessed, wherein the reselection limit is not released.
A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any of claims 1-11.
A communication device, comprising: a processor and interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor for executing the code instructions to perform the method of any one of claims 1 to 11.
A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 11 to be implemented.