WO2023035198A1

WO2023035198A1 - Reselection restriction release method and apparatus for cell

Info

Publication number: WO2023035198A1
Application number: PCT/CN2021/117522
Authority: WO
Inventors: 刘晓菲
Original assignee: 北京小米移动软件有限公司
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2023-03-16
Also published as: CN116114307A

Abstract

Disclosed in the present application are a reselection restriction release method and apparatus for a cell. The method comprises: according to an acquired reselection restriction reason for a reselection-restricted cell, determining whether to release a reselection restriction for the reselection-restricted cell. In the present application, a terminal device can use different restriction release schemes for different reasons for barred cells, such that the restriction release is more accurate, the problem of a certain cell and other intra-frequency cells being frequently switched between a mode of being released from a restriction and a mode of being restricted again can be solved, and the resource waste caused by repeated restrictions can be avoided.

Description

Method and device for removing restriction on cell reselection

technical field

The present application relates to the field of communication technologies, and in particular to a cell reselection restriction releasing method and device thereof.

Background technique

A cell and other cells of the same frequency are restricted from being excluded from reselection candidate cells because they are regarded as barred cells. Change, the reselection restriction of all the cells whose reselection was stopped before will be lifted, and re-participate in reselection. However, the signal quality jitter of cells on some frequency bands is serious and frequent, and the Highest ranked cell will change frequently. A certain cell and other cells with the same frequency may be constantly switched between unrestricted and re-restricted.

Contents of the invention

The embodiment of the present application provides a cell reselection restriction release method and its device, which can be applied in a communication system to solve the problem that a certain cell and other same-frequency cells may be constantly switched between restriction release and re-restriction .

In the first aspect, the embodiment of the present application provides a cell reselection restriction release method, which is executed by a terminal device. The method includes: determining the reselection restriction cause of the reselection candidate cell; determining whether to release the reselection restriction cell Select restrictions. A method for releasing restrictions on reselecting candidate cells proposed in the first aspect of the present application may also have the following technical features:

In an implementation manner, the determining whether to release the reselection restriction on the reselection restricted cell includes: determining whether to execute the reselection restriction release on the reselection restricted cell in response to satisfying a reselection restriction release condition.

In an implementation manner, the condition for releasing the reselection restriction includes at least one of the following: the change of the highest-ranked cell and/or the signal quality meet the first set condition; the location of the terminal device meets the second set condition ; the moving speed of the terminal device satisfies the third setting condition; the terminal device determines that the system message update of the reselection restricted cell.

In an implementation manner, the manner of determining the first setting condition, the second setting condition and the third setting condition includes at least one of the following: protocol regulation; broadcast system message configuration; proprietary signaling configuration .

In an implementation manner, the signal quality of the highest-ranked cell meeting the first set condition includes at least one of the following: the duration of the signal quality change of the highest-ranked cell is longer than the second set duration; the highest-ranked cell The change amount of the signal quality of the cell is less than the first preset threshold value; the change speed of the signal quality of the highest-ranked cell is greater than the second preset threshold value; the signal quality of the highest-ranked cell is greater than the third preset threshold limit.

In an implementation manner, the second setting condition includes: the location of the terminal device exceeds a specified location range of the terminal device.

In an implementation manner, the third setting condition includes: the moving speed of the terminal device is greater than a moving speed threshold.

In an implementation manner, the reason for the reselection restriction is that the cell is a cell that is prohibited from being accessed.

In an implementation manner, the step of determining the cell prohibited from access includes: receiving a first indication message from a network device, and determining the cell prohibited from access according to the first indication message.

In an implementation manner, the step of determining the access-forbidden cell includes: determining the access-forbidden cell according to the cell for which the second indication message of the network device cannot be obtained.

In an implementation manner, the method further includes: not releasing the reselection restriction in response to determining that the cell is the access-forbidden cell according to the first indication message from the network device.

In the embodiment of this application, the terminal device can adopt different restriction release schemes for different barred cell reasons, which can make the restriction release more accurate, and can solve the problem of constant switching between a certain cell and other same-frequency cells between being restricted and re-restricted problem, and can avoid the waste of resources caused by repeated restrictions.

In the second aspect, the embodiment of the present application provides a communication device, which has part or all of the functions of the terminal device in the method described in the first aspect above, for example, the functions of the device may have part or all of the functions in this application The functions in the embodiments may also have the functions of independently implementing any one of the embodiments in the present application. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In an implementation manner, the structure of each of the above devices may include a transceiver module and a processing module, and the processing module is configured to support the device to perform corresponding functions in the above methods. The transceiver module is used to support the communication between the device and other devices. The device may also include a storage module, which is used for coupling with the transceiver module and the processing module, and stores necessary computer programs and data of the communication device.

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, an embodiment of the present application provides a communication device, where the communication device includes a processor, and when the processor invokes a computer program in a memory, it executes the method described in the first aspect above.

In a fourth aspect, the embodiment of the present application provides a communication device, the communication device includes a processor and a memory, the memory stores a computer program; the processor executes the computer program stored in the memory, so that the communication device performs The method described in the first aspect above.

In the fifth aspect, the embodiment of the present application provides a computer-readable storage medium, which is used to store instructions used by the above-mentioned terminal equipment, and when the instructions are executed, the terminal equipment executes the method described in the above-mentioned first aspect .

In a sixth aspect, the present application further provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in the first aspect above.

In the seventh aspect, the present application provides a chip system, the chip system includes at least one processor and an interface, used to support the terminal device to implement the functions involved in the first aspect, for example, determine or process the data and at least one of the information. In a possible design, the chip system further includes a memory, and the memory is configured to store necessary computer programs and data of the terminal device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In an eighth aspect, the present application provides a chip system, the chip system includes at least one processor and an interface, used to support the network device to implement the functions involved in the second aspect, for example, determine or process the data and at least one of the information. In a possible design, the chip system further includes a memory, and the memory is used for saving necessary computer programs and data of the network device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In the ninth aspect, the present application provides a chip system, the chip system includes at least one processor and an interface, used to support the network device to implement the functions involved in the third aspect, for example, determine or process the data and data involved in the above method at least one of the information. In a possible design, the chip system further includes a memory, and the memory is used for saving necessary computer programs and data of the network device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In a tenth aspect, the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect above.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiment of the present application or the background art, the following will describe the drawings that need to be used in the embodiment of the present application or the background art.

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

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

FIG. 3 is a schematic flowchart of a cell reselection restriction lifting method provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

For ease of understanding, terms involved in this application are firstly introduced.

1. Master Information Block (MIB)

The MIB message is transmitted on the Physical Broadcast Channel (PBCH), without scrambling with the Radio Network Temporary Identity (RNTI), and the MIB is received on the PBCH when the device is connected to the network. The MIB is transmitted every 40 milliseconds and repeated every 10 milliseconds, carrying the downlink bandwidth, the number of transmitting antennas; the system frame number (System Frame Number, SFN); the 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, SIB1)

It mainly carries information about cell access and cell selection, as well as other system information block (System Information Block Type, SIB) scheduling and window information. The SIB is broadcast in two different ways: the first is to periodically broadcast through the SIB1 message, and the second is to periodically broadcast other SIBs except the SIB1 through multiple System Information (SI) messages. The period of the SIB1 message is fixedly equal to 80ms.

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

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application. The communication system may include, but is not limited to, a network device and a terminal device. The number and form of the devices shown in Figure 1 are for example only and do not constitute a limitation to the embodiment of the application. In practical applications, two or more network equipment, two or more terminal equipment. The communication system shown in FIG. 1 includes one network device 101 and one terminal device 102 as an example.

It should be noted that the technical solutions of the embodiments of the present application may be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (new radio, NR) system, or other future new mobile communication systems, etc. It should also be noted that the side link in this embodiment 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, and the access network device may be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), or a next generation base station (next generation NodeB) in the NR system , gNB), base stations in other future mobile communication systems or access nodes in wireless fidelity (wireless fidelity, WiFi) systems, etc. The network device 101 may be a core network device. The core network device in the embodiment of the present application may be a device that communicates with an access network device. The core network device may be a 5G core network device, such as an access and mobility management function (Access and Mobility Management Function, AMF), or an Evolved Packet Core (EPC) device, such as a Mobility Management Entity (MME). The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device. The network device provided by the embodiment of the present application may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit), using CU-DU The structure of the network device, such as the protocol layer of the base station, can be separated, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal equipment may also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT) and so on. The terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control (industrial control), wireless terminal equipment in self-driving (self-driving), wireless terminal equipment in remote medical surgery (remote medical surgery), smart grid ( Wireless terminal devices in smart grid, wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

It can be understood that the communication system described in the embodiment of the present application is to illustrate the technical solution of the embodiment of the present application more clearly, and does not constitute a limitation to the technical solution provided in the embodiment of the present application. With the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The cell reselection restriction release method and device provided in this application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart of a method for releasing a cell reselection restriction provided in an embodiment of the present application. As shown in Figure 2, the method is executed by the terminal device, and may include but not limited to the following steps:

S21. Determine the reselection restriction cause of the reselection restricted 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. In some implementations, a certain cell and other cells are considered barred cells due to system messages directly indicating as barred cells or reserved cells. In some implementations, because the terminal device cannot obtain the relevant parameters of the reselected target cell, it can be regarded as a barred cell. For example, the MIB message cannot be obtained, or the SIB1 message cannot be obtained, or the TAC in the obtained SIB1 message is missing. etc.

As a possible implementation manner, determining the cell for which access is prohibited includes: the terminal device may receive a first indication message from the network device, and determine the cell as a barred cell according to the first indication message. The first indication message may be a cell status indication, which is used to indicate to the terminal device that a certain cell is used as a prohibited access cell or a reserved cell reserved for other terminal devices. The terminal device may exclude the indicated cell from the candidate cells for reselection according to the cell state indication and set a time, for example, 300s. In this embodiment of the present application, the terminal device may also regard other cells of the same frequency as the reselected target cell as a barred cell. That is to say, 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 (300s) due to barred cells.

As another possible implementation manner, determining a cell that is prohibited from access includes: the terminal device may determine a reselection target cell based on a reselection condition and an R criterion during a cell reselection process. Further, the terminal device can read the SIB1 of the target cell, and judge whether it is a suitable cell (suitable cell) based on parameters in the SIB1. In the 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 of the same frequency reselected by the terminal device will be regarded as a barred cell. Wherein, the second indication message may include the MIB message, the SIB1 message, or the TAC in the SIB1 message and so on.

S22. Determine whether to release the reselection restriction on the reselection restricted cell.

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

In some implementations, in response to determining that the reason for the reselection restriction is: the terminal device cannot obtain the MIB or SIB1 message or TAC of the reselection target cell and is regarded as a barred cell, the terminal device may release the restriction on the reselection restricted cell. For example, when the reselection restricted cell does not meet the reselection restriction duration (300s), the restriction on the reselection restricted cell may be released in advance.

In some other implementations, in response to determining that the reason for the reselection restriction is: according to the first indication message of the network device, it is determined that the cell is regarded as a barred cell, the terminal device does not release the restriction on the reselection restricted cell. For example, when the reselection restricted cell does not meet the reselection restriction duration (300s), the restriction on the reselection restricted cell may not be lifted in advance. Alternatively, when the reselection restricted cell meets the reselection restriction duration (300s), the restriction on the reselection restricted cell is lifted.

The system message indicates that the cell is a barred cell for a period of time. In this case, if the highest ranked cell changes due to changes in signal quality, etc., the restriction will be lifted, that is, the cell or frequency point that was previously restricted for reselection will rejoin the candidate List, evaluate and sort, and read SIB1 for final check (final check), if it is still barred cell after checking, it can still be restricted again if necessary, which will introduce unnecessary SIB1 read power consumption and access Delay.

Please refer to FIG. 3 . FIG. 3 is a schematic flowchart of a method for releasing a cell reselection restriction provided in an embodiment of the present application. As shown in Figure 3, the method is executed by the terminal device, and may include but not limited to the following steps:

S31. Determine the reselection restriction cause of the reselection restricted cell.

For the introduction of step S31, reference may be made to the descriptions of related content in each embodiment of the present application, which will not be repeated here.

S32. In response to satisfying the reselection restriction release condition, determine whether to perform reselection restriction release on the reselection restriction cell.

In this embodiment of the application, the conditions for lifting the restriction on reselection include at least one of the following:

The highest-ranked cell changes and/or the signal quality of the highest-ranked cell satisfies the first set condition;

The location of the terminal device satisfies the second setting condition;

The moving speed of the terminal device satisfies the third setting condition;

The terminal device determines the system information update of the reselected 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 the following:

Agreement provisions;

Broadcast system message configuration;

Proprietary signaling configuration.

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

In some implementations, when the cell with the highest rank changes, and the quality of the cell with the highest rank after the change satisfies the first set condition, the signal quality of the cell with the highest rank after the change is stable. Among them, the first setting condition includes but not limited to at least one of the following situations:

(1) The signal quality of the cell with the highest ranking changes continuously for more than the set time, where the set time can be configured by the network equipment through broadcast system messages or proprietary signaling, or can be specified by the protocol.

For example, the change of the highest-ranked cell triggers a timer, and the restriction is lifted after the timer expires. The timer value can be specified by the protocol or configured by the network device through signaling.

(2) The signal quality variation of the cell with the highest ranking does not exceed the threshold value. For example, the threshold value may be configured by a network device through a broadcast system message or dedicated signaling, or may be specified by a protocol.

(3) The signal quality change speed of the cell with the highest ranking does not exceed the speed threshold, where the speed threshold can be configured by the network device through broadcast system messages or proprietary signaling, or can be specified by the protocol.

(4) The signal quality of the cell with the highest ranking exceeds a certain quality threshold, where the threshold can be configured by the network device through broadcast system messages or proprietary signaling, or can be specified by a protocol.

Correspondingly, when the cell with the highest ranking only satisfies the first setting condition, the signal quality of the cell with the highest ranking needs to meet the fluctuation of the set amount, where the first setting condition includes but is not limited to at least one of the following situations:

(1) The signal quality change of the cell with the highest ranking exceeds the set time range, where the set time can be configured by the network device through broadcast system messages or dedicated signaling, or can be specified by the protocol.

(2) The signal quality change of the cell with the highest ranking exceeds a threshold value, where the threshold value can be configured by the network device through broadcast system messages or dedicated signaling, or can be specified by a protocol.

(3) The signal quality change speed of the cell with the highest ranking exceeds the speed threshold, where the speed threshold can be configured by the network device through broadcast system messages or proprietary signaling, or can be specified by the protocol.

Optionally, the location of the terminal device satisfies the second set condition, including but not limited to at least one of the following situations: the terminal device can obtain its own current location, compare the current location with the location range of the terminal device, and if the location range, it is considered that the terminal device satisfies the third setting condition. The location range of the terminal device may be configured by the network device through broadcast system messages or proprietary signaling, or may be specified by a protocol.

Optionally, the moving speed of the terminal device satisfies the third set condition, including but not limited to at least one of the following situations: the terminal device can obtain its own moving speed, compare the moving speed with the moving speed threshold of the terminal device, if If the moving speed of the terminal device exceeds the moving speed threshold, it is considered that the terminal device satisfies the fourth setting condition. The moving speed threshold of the terminal device may be configured by the network device through a broadcast system message or dedicated signaling, or may be specified by a protocol.

Optionally, the terminal device determines to update the system information of the reselected restricted cell. The network device can update the system information. The neighbor cell informs the serving cell that the system information has been updated through the Xn message, and the serving cell sends the indication information to the terminal equipment through broadcasting system information or dedicated signaling. For example, when the system information (MIB SIB1) of a certain cell is changed, the neighboring cell is notified through the Xn message, the serving cell maintains a list of cells whose system information has been changed, and sends indication information to the terminal through system information or dedicated signaling. After receiving the system information update, the terminal device may determine that the system information of a cell whose reselection is restricted due to the first indication message has changed. Wherein, when it is determined that the system information is changed, the restriction on reselecting the restricted cell is released, or when it is determined that the system information is changed and the first indication message is changed, the restriction on reselecting the restricted cell is released.

In the embodiment of the present application, meeting the reselection restriction release conditions includes: the highest-ranked cell changes, the signal quality of the highest-ranked cell meets the first set condition, the location of the terminal device meets the second set condition, and the moving speed of the terminal device meets the first set condition. 3. Setting conditions and determining at least one of system message updates of reselection-restricted cells by the terminal equipment.

In some implementations, in response to determining that the reason for the reselection restriction is: the terminal device is unable to obtain the MIB message of the reselection target cell, or cannot obtain the SIB1 message, or the TAC in the obtained SIB1 message is missing. For a cell regarded as a barred cell, the terminal device can release the restrictions on the reselection restricted cell if the conditions for reselecting the restricted cell are met. For example, when the reselection restricted cell does not meet the reselection restriction duration (300s) and meets the reselection restriction release condition, the restriction on the reselection restricted cell may be released in advance.

Example 1: In cell reselection, if a cell and other cells are subject to reselection restrictions because at least one of the terminal's inability to obtain the cell's MIB message, or the inability to obtain the SIB1 message, or the lack of TAC in the obtained SIB1 message , when the re-election restriction release condition is satisfied, the re-election restriction will be deleted.

Among them, the lifting of the restriction on re-election may include but not limited to at least one of the following:

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

The location of the terminal device satisfies the second setting condition;

The moving speed of the terminal device satisfies the third setting condition;

It should be noted that, in example 1, the first set condition includes but not limited to at least one of the following:

The signal quality of the highest ranking cell changes within the set time range.

The signal quality change of the cell with the highest ranking exceeds the threshold.

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

Wherein, the above-mentioned setting time, the above-mentioned threshold value, and the above-mentioned speed threshold value can be respectively configured by the network device through broadcast system messages or dedicated signaling, and can also be specified by a protocol.

Example 2: In cell reselection, if a cell and other cells are subject to reselection restrictions because at least one of the terminal's failure to obtain the cell's MIB message, or the failure to obtain the SIB1 message, or the lack of TAC in the obtained SIB1 message , when the cell with the highest ranking changes and meets the conditions for removing the reselection restriction, the reselection restriction is deleted.

Among them, the re-election restriction lifting conditions may include but not limited to at least one of the following:

The location of the terminal device satisfies the second setting condition;

The moving speed of the terminal device satisfies the third setting condition;

It should be noted that, in example 2, the first set condition includes but not limited to at least one of the following:

The signal quality change of the highest ranked cell lasts longer than the set time.

The signal quality variation of the cell with the highest ranking does not exceed the threshold value.

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

The signal quality of the cell with the highest ranking exceeds a certain quality threshold.

Wherein, the above-mentioned setting time, the above-mentioned threshold value, the above-mentioned speed threshold and the above-mentioned quality threshold can be respectively configured by the network device through broadcast system messages or dedicated signaling, and can also be specified by a protocol.

The above are examples only, and should not be used as conditions for limiting the present application.

In some other implementations, in response to determining that the reason for the reselection restriction is: according to the first indication message of the network device, it is determined that the cell is regarded as a barred cell cell, and if the reselection restriction condition is met, the terminal device does not release the reselection restriction Community restrictions.

For example, when the reselection restricted cell does not meet the reselection restriction duration (300s), the restriction on the reselection restricted cell may not be lifted in advance. Alternatively, when the reselection restricted cell satisfies the reselection restriction duration (300s), the restriction on the reselection restricted cell is lifted.

Example 1: A certain cell and other cells determine that the cell is regarded as a barred cell according to the first indication message from the network device. When the cell with the highest ranking changes, the reselection restriction is not lifted.

Example 2: A certain cell and other cells determine that the cell is regarded as a barred cell according to the first indication message from the network device. When certain conditions are met, the reselection restriction is not lifted.

Example 3: A certain cell and other cells determine that the cell is regarded as a barred cell according to the first indication message from the network device. When the cell with the highest ranking changes and meets certain conditions, the reselection restriction will not be lifted.

That is to say, a certain cell and other cells are regarded as barred cells due to the indication of the first indication message (system message), and will not be used as reselection candidate cells for a period of time. , for this type of cell and other cells, the terminal device cannot release the reselection restriction.

In some other implementations, in response to determining that the reason for the reselection restriction is: according to the first indication message of the network device, it is determined that the cell is regarded as a barred cell cell, and the terminal device needs to wait for reselection when the reselection restriction release condition is met. After the restriction duration of the restricted cell reaches the set duration (300s), the restriction on reselection of the restricted cell can be lifted.

In other implementations, in response to determining that the cause of the reselection restriction is: according to the first indication message of the network device, it is determined that the cell is regarded as a barred cell cell, when the reselection restriction condition is met, if the terminal device receives a system message update, The terminal device can release the reselection restriction condition of the reselection restriction cell.

In the above-mentioned embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspectives of the terminal device, the core network device, and the access network device respectively. In order to realize the various functions in the method provided by the above-mentioned embodiments of the present application, the terminal equipment, the core network equipment and the access network equipment may include a hardware structure and a software module, in the form of a hardware structure, a software module, or a hardware structure plus a software module. Realize the above functions. A certain function among the above-mentioned functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to FIG. 4 , which is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application. The communication device 400 shown in FIG. 4 may include a processing module 41 .

The communication device 400 may be a terminal device (such as the terminal device in the foregoing method embodiments), may also be a device in the terminal device, and may also be a device that can be matched and used with the terminal device.

The communication device 400 is a terminal device (such as the terminal device in the foregoing method embodiments), including:

The processing module 41 is configured to: determine the reason for the reselection restriction of the reselection restricted cell; and determine whether to lift the reselection restriction on the reselection restricted cell.

The processing module 41 is further configured to: in response to satisfying the reselection restriction removal condition, determine whether to perform reselection restriction removal on the reselection restriction cell.

The reselection restriction removal condition includes at least one of the following: the highest ranking cell changes and/or the signal quality meets the first setting condition; the location of the terminal device meets the second setting condition; the moving speed of the terminal device meets the third setting condition; The terminal device determines the system information update of the reselected restricted cell.

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

The signal quality of the highest-ranked cell meeting the first set condition includes at least one of the following: the change duration of the signal quality of the highest-ranked cell is longer than the second set duration; the change of the signal quality of the highest-ranked cell is less than the first preset threshold Limit value; the change speed of the signal quality of the highest ranking cell is greater than the second preset threshold value; the signal quality of the highest ranking cell is greater than the third preset threshold value.

The second setting condition includes: the position of the terminal device exceeds the specified position range of the terminal device.

The third setting condition includes: the moving speed of the terminal device is greater than a moving speed threshold.

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

The processing module 41 includes: receiving a first indication message from a network device, and determining a cell that is prohibited from accessing according to the first indication message.

The processing module 41 includes: according to the cells that cannot obtain the second indication message of the network equipment, determine the cells that are prohibited from accessing.

The processing module 41 is further configured to: in response to determining that the reason for the reselection restriction is that the cell is determined to be an access-forbidden cell according to the first indication message of the network device, the reselection restriction is not released.

Please refer to FIG. 5 , which is a schematic structural diagram of another communication device 500 provided in an embodiment of the present application. The communication device 500 may be a network device, or a terminal device (such as the terminal device in the aforementioned method embodiments), or a chip, a chip system, or a processor that supports the network device to implement the above method, or it may also be a terminal that supports A device is a chip, a chip system, or a processor that implements the above method. The device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.

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, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs , to process data for 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 executes the method described in the foregoing method embodiments. method. Optionally, data may also be stored in the memory 52 . The communication device 500 and the memory 52 can be set separately or integrated together.

Optionally, the communication device 500 may further include a transceiver 55 and an antenna 56 . The transceiver 55 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to realize a transceiver function. The transceiver 55 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.

Optionally, the communication device 500 may further include one or more interface circuits 57 . The interface circuit 57 is used to receive code instructions and transmit them to the processor 51 . The processor 51 runs the code instructions to enable the communication device 500 to execute the methods described in the foregoing method embodiments.

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

In an implementation manner, the processor 51 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together. The above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.

In an implementation manner, the processor 51 may store a computer program 53 , and the computer program 53 runs on the processor 51 to enable the communication device 500 to execute the methods described in the foregoing method embodiments. The computer program 53 may be solidified in the processor 51, and in this case, the processor 51 may be realized by hardware.

In an implementation manner, the communication device 500 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-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 device described in the above embodiments may be a network device or a terminal device (such as the terminal device in the aforementioned method embodiments), but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be affected by Figure 5 Limitations. A communication device may be a stand-alone device or may be part of a larger device. For example the communication device may be:

(1) Stand-alone integrated circuits ICs, or chips, or chip systems or subsystems;

(2) A set of one or more ICs, optionally, the set of ICs may also include storage components for storing data and computer programs;

(3) ASIC, such as modem (Modem);

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handsets, mobile units, vehicle equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others and so on.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram 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 more than one.

For the case where the chip is used to implement the functions of the terminal device in the embodiment of this application (such as the terminal device in the aforementioned 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 embodiment of this application:

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

Those skilled in the art can also understand that various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

The present application also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any one of the above method embodiments are realized.

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

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it 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 the computer, all or part of the processes or functions according to the embodiments of the present application will be generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be downloaded from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). 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 or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) etc.

Those of ordinary skill in the art can understand that: the first, second and other numbers involved in this application are only for convenience of description, and are not used to limit the scope of the embodiments of this application, and also indicate the sequence.

At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not make a limitation. In this embodiment of the application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in the "first", "second", "third", "A", "B", "C" and "D" have no sequence or order of magnitude among the technical features described.

The corresponding relationships shown in the tables in this application can be configured or predefined. The values of the information in each table are just examples, and may be configured as other values, which are not limited in this application. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships shown in the tables. For example, in the table in this application, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on. The names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device. When the above tables are implemented, other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.

Predefined in this application can be understood as defining, predefining, storing, prestoring, prenegotiating, preconfiguring, curing, or prefiring.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A cell reselection restriction release method is characterized in that it is applicable to terminal equipment, and the method includes:

Determine the reselection restriction cause of the reselection restricted cell;

Determine whether to release the reselection restriction on the reselection restricted cell.
The method according to claim 1, wherein the determining whether to release the reselection restriction on the reselection restricted cell comprises:

In response to satisfying the reselection restriction release condition, it is determined whether to perform reselection restriction release on the reselection restriction cell.
The method according to claim 2, wherein the reselection restriction lifting condition includes at least one of the following:

The cell with the highest ranking changes and/or the signal quality meets the first set condition;

The location of the terminal device satisfies the second set condition;

The moving speed of the terminal device satisfies the third setting condition;

The terminal device determines system information updates of the reselection-restricted cell.
The method according to claim 3, wherein the manner of determining the first setting condition, the second setting condition and the third setting condition comprises at least one of the following:

Agreement provisions;

Broadcast system message configuration;

Proprietary signaling configuration.
The method according to claim 3, wherein the signal quality of the highest-ranked cell meeting the first set condition includes at least one of the following:

The change duration of the signal quality of the cell with the highest ranking lasts longer than the second set duration;

The change amount of the signal quality of the cell with the highest ranking is less than a first preset threshold value;

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

The signal quality of the cell with the highest ranking is greater than a third preset threshold.
The method according to claim 3, wherein the second setting condition comprises:

The location of the terminal device is beyond the specified location range of the terminal device.
The method according to claim 3, wherein the third setting condition comprises:

The moving speed of the terminal device is greater than a moving speed threshold.
The method according to any one of claims 1-7, wherein the reason for the reselection restriction is that the cell is a cell that is prohibited from accessing.
The method according to claim 8, characterized in that the step of determining the cell for which access is prohibited comprises:

Receiving a first indication message from the network device, and determining the access-prohibited cell according to the first indication message.
The method according to claim 8, characterized in that the step of determining the cell for which access is prohibited comprises:

The cell that cannot obtain the second indication message from the network device is determined as the cell that is prohibited from accessing.
The method according to claim 9, characterized in that the method further comprises:

In response to determining that the cell is the access-forbidden cell according to the first indication message, the reselection restriction is not released.
A communication device, suitable for terminal equipment, the device includes:

A processing module, configured to determine the reason for the reselection restriction of the reselection restricted cell; and,

Determine whether to release the reselection restriction on the reselection restricted cell.
The device according to claim 12, wherein the processing module is also used for:

In response to satisfying the reselection restriction release condition, it is determined whether to perform reselection restriction release on the reselection restriction cell.
The device according to claim 13, wherein the reselection restriction removal condition includes at least one of the following:

The cell with the highest ranking changes and/or the signal quality meets the first set condition;

The location of the terminal device satisfies the second set condition;

The moving speed of the terminal device satisfies the third setting condition;

The terminal device determines system information updates of the reselection-restricted cell.
The device according to claim 14, wherein the manner of determining the first setting condition, the second setting condition and the third setting condition comprises at least one of the following:

Agreement provisions;

Broadcast system message configuration;

Proprietary signaling configuration.
The device according to claim 14, wherein the signal quality of the highest-ranked cell meeting the first set condition includes at least one of the following:

The change duration of the signal quality of the cell with the highest ranking lasts longer than the second set duration;

The change amount of the signal quality of the cell with the highest ranking is less than a first preset threshold value;

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

The signal quality of the cell with the highest ranking is greater than a third preset threshold.
The device according to claim 14, wherein the location of the terminal device satisfies the second set condition, including:

The location of the terminal device is beyond the specified location range of the terminal device.
The device according to claim 14, wherein the third setting condition includes:

The moving speed of the terminal device is greater than a moving speed threshold.
The device according to any one of claims 12-18, wherein the reselection restriction reason is that the cell is a cell that is prohibited from being accessed.
The device according to claim 19, wherein the processing module comprises:

Receiving a first indication message from the network device, and determining the access-prohibited cell according to the first indication message.
The device according to claim 19, wherein the processing module comprises:

The access-prohibited cell is determined according to the cell for which the second indication message of the network device cannot be obtained.
The device according to claim 20, wherein the processing module is also used for:

In response to determining that the cell is the access-forbidden cell according to the first indication message of the network device, the reselection restriction is not lifted.
A communication device, characterized in that the device includes a processor and a memory, and a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device performs the The method described in any one of 1 to 11.
A communication device, characterized by comprising: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to execute the method according to any one of claims 1-11.
A computer-readable storage medium for storing instructions, which, when executed, cause the method according to any one of claims 1 to 11 to be implemented.