WO2024065309A1

WO2024065309A1 - Cell selection method and apparatus

Info

Publication number: WO2024065309A1
Application number: PCT/CN2022/122254
Authority: WO
Inventors: 江小威
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2024-04-04
Also published as: CN118104195A

Abstract

Disclosed in the embodiments of the present application are a cell selection method and apparatus, which can be applied to systems such as the Internet of Vehicles. The method comprises: determining whether a terminal device is a vehicle-mounted terminal device; and according to the result of determining whether the terminal device is a vehicle-mounted terminal device, the terminal device selecting a cell associated with an integrated access and backhaul (IAB) node. By means of implementing the embodiments of the present application, a frequency priority is not taken into consideration during cell selection or cell re-selection, a cell associated with a corresponding moving IAB node is selected according to the movement state of a terminal device, and a cell associated with a corresponding static IAB node is selected according to the static state of the terminal device, thereby effectively reducing the number of times of cell re-selection.

Description

A cell selection method and device thereof

Technical Field

The present application relates to the field of communication technology, and in particular to a method and device for selecting a cell.

Background technique

In R18 Integrated access and backhaul (IAB), mobile IAB scenarios are supported. Mobile IAB focuses on scenarios where the vehicle-mounted mobile IAB node provides 5G coverage/capability enhancement for vehicle-mounted terminals and/or non-vehicle-mounted terminals. When vehicle-side terminal devices and non-vehicle-side terminal devices need to select and reselect cells, different frequencies have different priorities. If only frequency priority is considered, the vehicle-mounted terminal device may give priority to a stationary IAB node. Since the vehicle-mounted terminal is always moving, cell reselection may be triggered frequently.

Summary of the invention

The disclosed embodiments provide a method and apparatus for cell selection, which solve the problem in the related art that when performing cell selection or reselection, the frequency priority method will cause frequent triggering of cell reselection because the vehicle-mounted terminal device is always moving.

In a first aspect, an embodiment of the present disclosure provides a method for selecting a cell, the method being applied to a terminal device, the method comprising:

Determining whether the terminal device is a vehicle-mounted terminal device;

According to whether the determined terminal device is a vehicle-mounted terminal device, the terminal device selects a cell associated with the integrated access and backhaul IAB node.

In one implementation, in response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority.

In one implementation, the mobile IAB node is:

A mobile IAB node that remains relatively stationary with respect to the terminal device.

In one implementation,

The mobile IAB node that remains relatively stationary with the terminal device is a mobile IAB node that is on the same vehicle as the terminal device; or

The mobile IAB node that remains relatively still with respect to the terminal device is a mobile IAB node that is mounted on a different vehicle than the terminal device.

In one implementation, the method further includes:

By comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, it is determined whether the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device.

In one implementation, the method further includes:

In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the lowest priority.

In one implementation, the method further includes:

In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the highest priority.

In one implementation, the method further includes:

In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the lowest priority.

In one implementation, the method further includes:

In response to determining that the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device, the terminal device is triggered to perform cell reselection.

In one implementation, the method further includes:

By comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device, it is determined whether the mobile IAB node associated with the cell currently selected by the terminal device is not relatively stationary with the terminal device.

In one implementation, the method further includes:

In response to determining that the terminal device is changed from an on-vehicle terminal device to a non-on-vehicle terminal device, the terminal device is triggered to reselect a cell.

In one implementation, the method further includes:

In response to determining that the terminal device is changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device, the terminal device is triggered to reselect a cell.

In one implementation, determining whether the terminal device is a vehicle-mounted terminal device includes:

Determining whether the terminal device is a vehicle-mounted terminal device according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node;

If the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with at least two of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, then the terminal device is determined to be a vehicle-mounted terminal device;

If at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, the terminal device is determined to be a non-vehicle-mounted terminal device.

In one implementation, the non-vehicle terminal device is a terminal device supporting a mobile IAB feature.

In a third aspect, an embodiment of the present disclosure provides a cell selection device, the device being applied to a terminal device, the device comprising:

A determination unit, used to determine whether the terminal device is a vehicle-mounted terminal device;

The cell selection unit is used for the terminal device to select a cell associated with the integrated access and backhaul IAB node according to whether the terminal device is a vehicle-mounted terminal device.

In one implementation, the cell selection unit is further configured to, in response to determining that the terminal device is a vehicle-mounted terminal device, select a cell associated with a mobile IAB node as the cell with the highest priority when the terminal device performs cell selection or cell reselection.

In one implementation, the mobile IAB node is:

In one implementation,

In one implementation, the device further includes:

The first judgment unit is used to judge whether the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device based on the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node.

In one implementation, the device further includes:

The cell selection unit is further configured to, in response to determining that the terminal device is a vehicle-mounted terminal device, select a cell associated with a stationary IAB node as a cell with the lowest priority when the terminal device performs cell selection or cell reselection.

In one implementation, the device further includes:

The cell selection unit is further configured to, in response to determining that the terminal device is a non-vehicle terminal device, select a cell associated with a stationary IAB node as a cell with the highest priority when the terminal device performs cell selection or cell reselection.

In one implementation, the device further includes:

The cell selection unit is further configured to, in response to determining that the terminal device is a non-vehicle terminal device, select the cell associated with the mobile IAB node as the cell with the lowest priority when the terminal device performs cell selection or cell reselection.

In one implementation, the device further includes:

The first triggering unit is configured to trigger the terminal device to reselect a cell in response to determining that the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device.

In one implementation, the device further includes:

The second judgment unit is used to judge whether the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device by comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device.

In one implementation, the device further includes:

The second trigger unit is used to trigger the terminal device to reselect a cell in response to determining that the terminal device is changed from an on-vehicle terminal device to a non-on-vehicle terminal device.

In one implementation, the device further includes:

The third trigger unit is used to trigger the terminal device to reselect a cell in response to determining that the terminal device is changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device.

In one implementation, the determining unit includes:

A first determination module, configured to determine whether the terminal device is a vehicle-mounted terminal device according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node;

A second determination module is used to determine that the terminal device is a vehicle-mounted terminal device when at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node;

The third determination module is used to determine that the terminal device is a non-vehicle-mounted terminal device when at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node.

In a third aspect, an embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method described in the first aspect.

In a fourth aspect, an embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method described in the first aspect can be implemented.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the first aspect.

In a sixth aspect, the present application also provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

In a seventh aspect, the present application provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

In an eighth aspect, the present application provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

FIG1 is a schematic flow chart of a method for selecting a cell provided by an embodiment of the present disclosure;

FIG2 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG3 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG4 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG5 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG6 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG7 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG8 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG9 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG10 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG11 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG12 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

FIG13 is a schematic flow chart of another method for selecting a cell provided in an embodiment of the present disclosure;

14 is a flow chart of a method for determining whether a terminal device is a vehicle-mounted terminal device provided in an embodiment of the present disclosure;

FIG15 is a schematic diagram of the structure of another cell selection device provided by an embodiment of the present disclosure;

FIG16 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure;

FIG17 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure;

FIG18 is a schematic structural diagram of a cell selection device provided by an embodiment of the present disclosure;

FIG19 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure;

FIG. 20 is a schematic diagram of the structure of a cell selection device provided in an embodiment of the present disclosure

FIG21 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure;

FIG22 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure;

FIG. 23 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present disclosure.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present disclosure as detailed in the appended claims.

The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and/or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to determination".

Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, with the same or similar reference numerals throughout. Exemplary embodiments will be described in detail here, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present disclosure as detailed in the appended claims.

Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

In order to better understand a method for selecting a cell disclosed in an embodiment of the present disclosure, the following first describes a communication system to which the embodiment of the present disclosure is applicable. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

In order to better understand a cell selection method disclosed in an embodiment of the present disclosure, a communication system to which the embodiment of the present disclosure is applicable is first described below.

Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.

Integrated access and backhaul (IAB) 101 supports millimeter wave base stations for wireless access and backhaul, which can effectively reduce the need for new optical fiber deployment when deploying dense networks, making wireless relay in NG-RAN possible. Among them, the relay node is called IAB-node, which supports wireless access and backhaul through NR. The termination node of NR backhaul on the network side is called IAB-donor, which is a gNB with additional IAB function. Backhaul can be performed through a single hop or multiple hops. The number and form of devices shown in Figure 1 are for example only and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more IAB-donors and three or more IAB-nodes may be included.

In R18IAB, scenarios of mobile IAB are supported. Mobile IAB focuses on scenarios where the on-board mobile IAB node provides 5G coverage/capability enhancement for on-board and/or non-on-board terminals. The terminal devices 102 served by the mobile IAB node can be divided into on-board terminal devices and non-on-board terminals. On-board terminals refer to terminal devices that move with the mobile IAB node, and non-on-board terminals are terminal devices that do not move with the mobile IAB node. They can be R18 terminal devices that support the mobile IAB feature or R17/R16 terminal devices that do not support the mobile IAB feature. Peripheral terminal devices can be stationary terminal devices or mobile terminal devices.

It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

The terminal device in the embodiment of the present disclosure includes a vehicle-mounted terminal device or a non-vehicle-mounted terminal, which is an entity on the user side for receiving or transmitting signals. The terminal device may also be referred to as a terminal device (terminal), a mobile station (MS), a mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in 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 a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device.

When vehicle-side terminal devices and non-vehicle-side terminal devices need to select and reselect cells, different frequencies have different priorities. If only frequency priority is considered, the vehicle-mounted terminal device may give priority to the static IAB node. Since the vehicle-mounted terminal is always moving, cell reselection may be triggered frequently.

In view of the above problems, the embodiments of the present disclosure provide a method and device for cell selection.

Please refer to Figure 2, which is a flow chart of a method for selecting a cell provided by an embodiment of the present disclosure. As shown in Figure 2, the method is applied to a terminal device, and the method may include but is not limited to the following steps:

Step S201: Determine whether the terminal device is a vehicle-mounted terminal device;

The vehicle-mounted terminal device described in the embodiment of the present application refers to a terminal device that moves together with a mobile IAB node. During the specific implementation process, the terminal device can determine whether it is a vehicle-mounted terminal device based on its own and the mobile IAB node's moving speed, moving direction or longitude and latitude position.

Exemplarily, as an implementation method, the terminal device may belong to the same vehicle as the mobile IAB node and move with the mobile IAB node. As another implementation method, the terminal device may also belong to a different vehicle from the mobile IAB node. For example, the terminal device belongs to vehicle A and the mobile IAB node belongs to vehicle B. The terminal device moves with vehicle A and the mobile IAB node moves with vehicle B. Vehicle A and vehicle B remain relatively stationary, that is, the terminal device and the mobile IAB node remain relatively stationary. The terminal devices in the above two implementation methods are both vehicle-mounted terminal devices.

The mobile IAB node may be an IAB node that moves with the terminal device, or an IAB node that remains relatively still with the terminal device. Exemplarily, the mobile IAB node may be an IAB node that is on the same vehicle as the terminal device, or the mobile IAB node may be on a different vehicle than the terminal device, but both need to remain relatively still. In the embodiment of the present application, when determining whether the mobile IAB node and the terminal device are relatively still, the moving speed, longitude and latitude position, and moving direction may be used for determination. Alternatively, other implementation methods may be used, and the specific embodiments of the present application are not limited thereto.

Step S202: According to whether the determined terminal device is a vehicle-mounted terminal device, the terminal device selects a cell associated with the integrated access and backhaul IAB node.

After determining that the terminal device is a vehicle-mounted terminal device, a cell associated with a mobile IAB node is preferentially selected; after determining that the terminal device is a non-vehicle-mounted terminal device, a cell associated with a stationary IAB node is preferentially selected.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, the terminal device does not consider the frequency priority when selecting or reselecting a cell, depending on whether it is a vehicle-mounted terminal device. According to the mobility status of the terminal device (for a vehicle-mounted terminal device), the cell associated with the corresponding IAB node is selected; according to the stationary status of the terminal device (for a non-vehicle terminal device), the cell associated with the corresponding IAB node is selected, which effectively reduces the number of cell reselections.

An embodiment of the present disclosure provides another method for cell selection. Figure 3 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG3 , the cell selection method may include the following steps:

Step S301: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S302: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority.

It is determined that the terminal device is a vehicle-mounted terminal device. When the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority. In actual applications, the cell associated with the mobile IAB node has been pre-set. Once the terminal device is determined to be a vehicle-mounted terminal device, when performing cell selection or reselection, the cell associated with the mobile IAB node is preferentially selected.

As an implementation method of an embodiment of the present application, the mobile IAB node may have one or more associated cells. When the mobile IAB node has one associated cell, the cell associated with the mobile IAB node is directly determined as the cell of the vehicle-mounted terminal device. When the mobile IAB node has multiple associated cells, a cell with relatively strong signal strength can be selected from multiple associated cells as the cell of the vehicle-mounted terminal device, or a cell can be selected or reselected from multiple associated cells according to other preset rules. Specifically, the embodiment of the present application does not limit the implementation method of cell selection or reselection.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, the terminal device determines that it is a vehicle-mounted terminal device. When performing cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority, without considering the frequency priority, thereby effectively reducing the number of cell reselections.

As shown in FIG4 , the cell selection method may include the following steps:

Step S401: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S402: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority, and the mobile IAB node is: a mobile IAB node that remains relatively stationary with the terminal device.

During specific application, whether the mobile IAB node and the terminal device remain relatively still can be judged from the moving speed, longitude and latitude position, and moving direction between the two. If the moving speed, longitude and latitude position, and moving direction of the terminal device remain relatively unchanged with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, then the mobile IAB node is determined to be a mobile IAB node that remains relatively still with the terminal device. If the moving speed, longitude and latitude position, and moving direction of the terminal device cannot remain relatively unchanged with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, then the mobile IAB node is determined to be a mobile IAB node that does not remain relatively still with the terminal device. The specific embodiments of the present application do not limit the determination method for remaining relatively still.

In summary, in order to solve the problem of frequent cell selection or reselection of vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node that remains relatively stationary with the terminal device will be selected as the cell with the highest priority, regardless of frequency priority, thereby effectively reducing the number of cell reselections.

An embodiment of the present disclosure provides another method for cell selection. Figure 5 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG5 , the cell selection method may include the following steps:

Step S501: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S502: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority, wherein the mobile IAB node that remains relatively stationary with the terminal device, the mobile IAB node that remains relatively stationary with the terminal device is a mobile IAB node that belongs to the same vehicle as the terminal device; or the mobile IAB node that remains relatively stationary with the terminal device is a mobile IAB node that belongs to a different vehicle than the terminal device.

After determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority. In actual applications, the cell associated with the mobile IAB node has been pre-set. Once the terminal device is determined to be a vehicle-mounted terminal device, when performing cell selection or reselection, the cell associated with the mobile IAB node is preferentially selected.

The mobile IAB node that remains relatively stationary with the terminal device includes but is not limited to the following two application scenarios: scenario one: the mobile IAB node and the terminal device belong to the same vehicle, and the mobile IAB node and the terminal device move together, for example, the terminal device belongs to vehicle A, the mobile IAB node belongs to vehicle A, and the terminal device and the mobile IAB node move synchronously with the movement of vehicle A; scenario two: the mobile IAB node and the terminal device may also belong to different vehicles, for example, the terminal device belongs to vehicle A, the mobile IAB node belongs to vehicle B, the terminal device moves with vehicle A and the mobile IAB node moves with vehicle B, vehicle A and vehicle B remain relatively stationary, that is, the terminal device and the mobile IAB node remain relatively stationary.

In a specific application process, whether the mobile IAB node and the terminal device remain relatively still can be determined from the moving speed, longitude and latitude position, and moving direction between the two. When the moving speed, longitude and latitude position, and moving direction of the two are consistent, it can be determined that the two remain relatively still. The specific embodiment of the present application does not limit the determination method of remaining relatively still.

An embodiment of the present disclosure provides another method for cell selection. Figure 6 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG6 , the cell selection method may include the following steps:

Step S601: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S602: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, to determine whether the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device.

If the moving speed, longitude and latitude position, and moving direction of the terminal device are respectively the same as the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, it is determined that the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device. If the moving speed, longitude and latitude position, and moving direction of the terminal device are respectively different from the moving speed, longitude and latitude position, and moving direction of the mobile IAB node by at least one difference, it is determined that the mobile IAB node is not a mobile IAB node that remains relatively stationary with the terminal device.

Step S603: If yes, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node that remains relatively stationary with the terminal device is selected as the cell with the highest priority, regardless of frequency priority, thereby effectively reducing the number of times the cell reselection is triggered.

An embodiment of the present disclosure provides another method for cell selection. Figure 7 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG. 7 , the cell selection method may include the following steps:

Step S701: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S702: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the lowest priority.

If the moving speed, longitude and latitude position, and moving direction of the terminal device are respectively consistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, then the terminal device is determined to be a vehicle-mounted terminal device.

For example, the mobile IAB node and the terminal device belong to the same vehicle, and the mobile IAB node and the terminal device move together. For example, the terminal device belongs to vehicle A, the mobile IAB node belongs to vehicle A, and the terminal device and the mobile IAB node move synchronously with the movement of vehicle A; scenario two: the mobile IAB node and the terminal device can also belong to different vehicles. For example, the terminal device belongs to vehicle A, the mobile IAB node belongs to vehicle B, the terminal device moves with vehicle A and the mobile IAB node moves with vehicle B, vehicle A and vehicle B remain relatively stationary, that is, the terminal device and the mobile IAB node remain relatively stationary. The terminal devices in the above two implementation methods are both vehicle-mounted terminal devices.

After determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the static IAB node is selected as the cell with the lowest priority. That is, the vehicle-mounted terminal device in the mobile state selects the cell associated with the static IAB node with the lowest priority, which can effectively reduce the number of times the cell reselection is triggered.

In summary, in order to solve the problem of frequent selection or reselection of cells by vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the mobile vehicle-mounted terminal device will select the cell associated with the stationary IAB node as the cell with the lowest priority, regardless of the frequency priority, thereby effectively reducing the number of times the cell reselection is triggered.

An embodiment of the present disclosure provides another method for cell selection. Figure 8 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG8 , the cell selection method may include the following steps:

Step S801: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S802: In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the highest priority.

If the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with at least one of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, the terminal device is determined to be a non-vehicle-mounted terminal device.

For ease of understanding, for example, the terminal device is currently in a stationary state, and the mobile IAB node is moving with the vehicle. At this time, the terminal device can be determined to be a non-vehicle terminal device. Or the terminal device belongs to vehicle A, and the mobile IAB node belongs to vehicle B, but at least one of the moving speed, longitude and latitude position, and moving direction of the terminal device is different from the moving speed, longitude and latitude position, and moving direction of the mobile IAB node. It can be determined that the terminal device is a non-vehicle terminal device. Alternatively, the non-vehicle terminal is a terminal other than the vehicle-mounted terminal. Specifically, the embodiments of the present application do not limit the determination method of the non-vehicle terminal and the scenario in which the non-vehicle terminal is located.

After determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the terminal does not consider the frequency priority and selects the cell associated with the static IAB node as the cell with the highest priority. That is, the non-vehicle terminal device in a static state has the highest priority to select the cell associated with the static IAB node, which can effectively reduce the number of times the cell reselection is triggered.

In summary, in order to solve the problem of frequent selection or reselection of cells by vehicle-mounted terminal devices, after the terminal device determines that it is a non-vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the static IAB node is selected as the cell with the highest priority, regardless of the frequency priority, thereby effectively reducing the number of reselections of the triggered cell.

An embodiment of the present disclosure provides another method for cell selection. Figure 9 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG9 , the cell selection method may include the following steps:

Step S901: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S902: In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the lowest priority.

After determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the terminal does not consider the frequency priority and gives the lowest priority to selecting or reselecting the cell associated with the mobile IAB node. That is, the non-vehicle terminal device in a stationary state gives the lowest priority to selecting the cell associated with the mobile IAB node, which can effectively reduce the number of times the cell reselection is triggered.

In summary, in order to solve the problem of frequent selection or reselection of cells by vehicle-mounted terminal devices, after the terminal device determines that it is a non-vehicle-mounted terminal device, during the cell selection and/or reselection process, the cell associated with the mobile IAB node is selected as the cell with the lowest priority, regardless of the frequency priority, thereby effectively reducing the number of reselections of the triggered cell.

An embodiment of the present disclosure provides another method for cell selection. Figure 10 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG10 , the cell selection method may include the following steps:

Step S1001: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S1002: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority.

Step S1003: In response to determining that the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device, triggering the terminal device to reselect a cell.

If the IAB node associated with the cell where the terminal device resides or selects is a mobile IAB node on an adjacent vehicle, when the adjacent vehicle changes its driving direction/speed, etc., the terminal device determines that the mobile IAB node associated with the currently resided cell is not relatively stationary with itself. At this time, cell reselection needs to be triggered, and the terminal device reselects the cell associated with the mobile IAB node that remains relatively stationary with it.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority. When it is determined that the mobile IAB node associated with the cell currently selected by the terminal device is not relatively stationary with the terminal device, the terminal device is triggered to reselect the cell.

As shown in FIG11 , the cell selection method may include the following steps:

Step S1101: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S1102: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority.

Step S1103: Determine whether the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device by comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device. If the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device, trigger the terminal device to reselect the cell.

After the terminal device selects a cell, it needs to determine in real time or within a preset time interval whether the mobile IAB node associated with the currently selected cell is not relatively stationary with the terminal device, in order to determine the consistency of movement of the terminal device and the associated mobile IAB node.

As an implementable method of an embodiment of the present application, the terminal device determines whether the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device by comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device. If it is determined that the moving speed, longitude and latitude position, and moving direction of the terminal device are different from at least one of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device, it is determined that the mobile IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device.

The terminal device determines that the mobile IAB node associated with the currently resident cell is not relatively stationary with itself, and cell reselection needs to be triggered at this time. The terminal device reselects the cell associated with the mobile IAB node that remains relatively stationary with it.

An embodiment of the present disclosure provides another method for cell selection. Figure 12 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG12 , the cell selection method may include the following steps:

Step S1201: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S1202: In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile integrated access and backhaul IAB node is selected as the cell with the highest priority.

Step S1203: In response to determining that the terminal device is changed from an on-board terminal device to a non-on-board terminal device, triggering the terminal device to reselect a cell.

If the terminal device gets off the vehicle, the terminal device determines that it has changed from a vehicle-mounted terminal to a non-vehicle-mounted terminal based on its own moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the current resident cell, and the terminal device triggers cell reselection.

When the terminal device is changed from an on-board terminal device to a non-on-board terminal device, during cell reselection, the cell associated with the stationary IAB node is selected as the cell with the highest priority, and the cell associated with the mobile IAB node is selected as the cell with the lowest priority.

In summary, in order to solve the problem of frequent cell selection or reselection of vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority, and when it is determined that the terminal device is changed from a vehicle-mounted terminal device to a non-vehicle terminal device, the terminal device is triggered to reselect the cell.

An embodiment of the present disclosure provides another method for cell selection. Figure 13 is a flow chart of another method for cell selection provided by an embodiment of the present disclosure, which can be applied to a terminal device. The method for cell selection can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG13 , the cell selection method may include the following steps:

Step S1301: Determine whether the terminal device is a vehicle-mounted terminal device.

Step S1302: In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the lowest priority.

Step S1303: In response to determining that the terminal device is changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device, triggering the terminal device to reselect a cell.

If the terminal device is carried on a vehicle, the terminal device determines that it has changed from a non-vehicle terminal to a vehicle terminal according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node associated with the current resident cell, and the terminal device triggers cell reselection. When the terminal device performs cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority, and the cell associated with the stationary IAB node is selected as the cell with the lowest priority.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority. When it is determined that the terminal device has changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device, the terminal device is triggered to reselect the cell.

An embodiment of the present disclosure provides another method for cell selection. Figure 14 is a flow chart of a method for determining whether a terminal device is a vehicle-mounted terminal device provided by an embodiment of the present disclosure, which can be applied to the terminal device. The cell selection method can be executed alone or in combination with any embodiment of the present disclosure or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

As shown in FIG. 14 , the method for determining whether a terminal device is a vehicle-mounted terminal device may include the following steps:

Step S1401: Determine whether the terminal device is a vehicle-mounted terminal device according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node.

As an implementation method of an embodiment of the present application, when respectively obtaining the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node, the built-in function in the terminal device or the mobile IAB node can be directly called to obtain the moving speed, longitude and latitude position, and moving direction; as another implementation method of an embodiment of the present application, the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node can also be obtained respectively through preset sensors. The embodiment of the present application does not specifically limit the implementation method of obtaining the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node.

Step S1402: If the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with at least two of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, it is determined that the terminal device is a vehicle-mounted terminal device.

One example is that the terminal device can be determined as a vehicle-mounted terminal device only after ensuring that the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node. Another example is that the terminal device can be determined as a vehicle-mounted terminal device only after ensuring that the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with at least two of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node. The embodiments of the present application do not limit other methods.

Step S1403: If at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, it is determined that the terminal device is a non-vehicle-mounted terminal device.

One example is that if the moving speed, longitude and latitude position, and moving direction of the terminal device include at least one that is inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, the terminal device is determined to be a non-vehicle terminal device. Or another example is that if the moving speed, longitude and latitude position, and moving direction of the terminal device include at least two that are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, the terminal device is determined to be a non-vehicle terminal device. The embodiments of the present application do not limit other methods.

In summary, in order to solve the problem of frequent cell selection or reselection of vehicle-mounted terminal devices, when the terminal device selects or reselects a cell, it first determines its current mobile status (vehicle-mounted terminal device or non-vehicle-mounted terminal device). After the terminal device determines that it is a vehicle-mounted terminal device, when selecting or reselecting a cell, the cell associated with the mobile IAB node is selected as the cell with the highest priority. After the terminal device determines that it is a non-vehicle terminal device, when selecting or reselecting a cell, the cell associated with the mobile IAB node is selected as the cell with the lowest priority, without considering the frequency priority, thereby effectively reducing the number of cell reselections.

The non-vehicle terminal device in the embodiment of the present application is a terminal device supporting the mobile IAB feature. For example, the non-vehicle terminal device refers to a terminal device supporting the R18 mobile IAB feature, and does not include R16/17 terminal devices that do not support the R18 mobile feature.

Corresponding to the cell selection method provided in the embodiments of Figures 2 to 14 above, the present disclosure also provides a cell selection device. Since the cell selection device provided in the embodiments of the present disclosure corresponds to the cell selection method provided in the embodiments of Figures 2 to 14 above, the implementation method of the cell selection method is also applicable to the cell selection device provided in the embodiments of the present disclosure, and will not be described in detail in the embodiments of the present disclosure.

FIG15 is a schematic diagram of the structure of a cell selection device provided by an embodiment of the present disclosure. The device is applied to a terminal device, and the device includes:

The determining unit 1501 is used to determine whether the terminal device is a vehicle-mounted terminal device;

The cell selection unit 1502 is configured to, in response to determining that the terminal device is a vehicle-mounted terminal device, select a cell associated with a mobile integrated access and backhaul IAB node as a cell with the highest priority when the terminal device performs cell selection or cell reselection.

In summary, in order to solve the problem of frequent cell selection or reselection by vehicle-mounted terminal devices, after the terminal device determines that it is a vehicle-mounted terminal device, when performing cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority, without considering the frequency priority, thereby effectively reducing the number of cell reselections.

As a possible implementation manner of the embodiment of the present disclosure, the mobile IAB node is:

As a possible implementation of the embodiment of the present disclosure,

As a possible implementation method of an embodiment of the present disclosure, as shown in Figure 16, the device also includes: a determination unit 1601, a cell selection unit 1602 and a first judgment unit 1603, wherein the relevant determination unit 1601 and the cell selection unit 1602 can refer to the detailed description of the above-mentioned determination unit 1501 and the cell selection unit 1502.

The first judging unit 1603 is used to judge whether the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device based on the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node.

As a possible implementation of the embodiment of the present disclosure, the device further includes:

The cell selection unit 1502 is further configured to, in response to determining that the terminal device is a vehicle-mounted terminal device, select a cell associated with a stationary IAB node as a cell with the lowest priority when the terminal device performs cell selection or cell reselection.

The cell selection unit 1502 is further configured to, in response to determining that the terminal device is a non-vehicle terminal device, select a cell associated with a stationary IAB node as a cell with the highest priority when the terminal device performs cell selection or cell reselection.

The cell selection unit 1502 is further configured to, in response to determining that the terminal device is a non-vehicle terminal device, select the cell associated with the mobile IAB node as the cell with the lowest priority when the terminal device performs cell selection or cell reselection.

As a possible implementation method of an embodiment of the present disclosure, as shown in Figure 17, the device also includes: a determination unit 1701, a cell selection unit 1702 and a first trigger unit 1703, wherein the relevant determination unit 1701 and the cell selection unit 1702 can refer to the detailed description of the above-mentioned determination unit 1501 and the cell selection unit 1502.

The first triggering unit 1703 is configured to trigger the terminal device to reselect a cell in response to determining that the mobile IAB node associated with the cell currently selected by the terminal device is not relatively stationary with the terminal device.

As a possible implementation method of an embodiment of the present disclosure, as shown in Figure 18, the device also includes: a determination unit 1801, a cell selection unit 1802 and a second judgment unit 1803, wherein the relevant determination unit 1801 and the cell selection unit 1802 can refer to the detailed description of the above-mentioned determination unit 1501 and the cell selection unit 1502.

The second judgment unit 1803 is used to judge whether the IAB node associated with the cell currently selected by the terminal device does not remain relatively stationary with the terminal device by comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device.

As a possible implementation of an embodiment of the present disclosure, as shown in FIG19 , the device further includes: a determination unit 1901, a cell selection unit 1902 and a second trigger unit 1903, wherein the relevant determination unit 1901 and the cell selection unit 1902 may refer to the detailed description of the above-mentioned determination unit 1501 and the cell selection unit 1502.

The second trigger unit 1903 is used to trigger the terminal device to reselect a cell in response to determining that the terminal device is changed from an on-vehicle terminal device to a non-on-vehicle terminal device.

As a possible implementation method of an embodiment of the present disclosure, as shown in Figure 20, the device also includes: a determination unit 2001, a cell selection unit 2002 and a third trigger unit 2003, wherein the relevant determination unit 2001 and cell selection unit 2002 can refer to the detailed description of the above-mentioned determination unit 1501 and cell selection unit 1502.

The third trigger unit 2003 is used to trigger the terminal device to reselect a cell in response to determining that the terminal device is changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device.

As a possible implementation of the embodiment of the present disclosure, as shown in FIG. 21 , it includes: a determination unit 2101 and a cell selection unit 2102 , wherein the cell selection unit 2102 may refer to the detailed description of the cell selection unit 1502 .

The determining unit 2101 includes:

The first determination module 21011 is used to determine whether the terminal device is a vehicle-mounted terminal device according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node;

The second determination module 21012 is used to determine that the terminal device is a vehicle-mounted terminal device when at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node;

The third determination module 21013 is used to determine that the terminal device is a non-vehicle terminal device when at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node.

As a possible implementation manner of the embodiment of the present disclosure, the non-vehicle terminal device is a terminal device supporting a mobile IAB feature.

In order to implement the above embodiments, the present disclosure also proposes a cell selection device, which includes a processor and a memory, in which a computer program is stored, and the processor executes the computer program stored in the memory so that the device performs the method shown in Figures 2 to 14.

In order to implement the above embodiment, the present disclosure also proposes another cell selection device, including: a processor and an interface circuit;

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

The processor is used to run the code instructions to execute the methods shown in Figures 2 to 14.

In order to implement the above embodiments, the present disclosure proposes a computer-readable storage medium for storing instructions. When the instructions are executed, the methods shown in FIG. 2 to FIG. 14 are implemented.

In the above embodiments provided by the present application, the method provided by the embodiment of the present disclosure is introduced from the perspective of the terminal device. In order to implement the various functions in the method provided by the above embodiments of the present disclosure, the terminal device may include a hardware structure and a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. A certain function of the above functions may be executed in the form of a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to Figure 22, which is a structural diagram of a cell selection device provided by an embodiment of the present disclosure. Referring to Figure 22, the network device 2200 includes a processing component 2222, which further includes at least one processor, and a memory resource represented by a memory 2232, for storing instructions that can be executed by the processing component 2222, such as an application. The application stored in the memory 2232 may include one or more modules, each of which corresponds to a set of instructions. In addition, the processing component 2222 is configured to execute instructions to execute any method of the aforementioned method applied to the network device, for example, the method described in the embodiments of Figures 2 to 14.

The network device 2200 may also include a power supply component 2226 configured to perform power management of the network device 2200, a wired or wireless network interface 2250 configured to connect the network device 2200 to a network, and an input/output (I/O) interface 2258. The network device 2200 may operate based on an operating system stored in the memory 2232, such as Windows Server TM, Mac OS X TM, Unix TM, Linux TM, FreeBSD TM, or the like.

FIG23 is a block diagram of a cell selection device provided in an embodiment of the present disclosure.

In FIG23 , the cell selection device 2300 may be a terminal device, or a chip, a chip system, or a processor that supports a network device to implement the above method, or a chip, a chip system, or a processor that supports a terminal device to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

The cell selection device 2300 may include one or more processors 2301. The processor 2301 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the cell selection device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

Optionally, the cell selection device 2300 may further include one or more memories 2302, on which a computer program 2304 may be stored, and the processor 2301 executes the computer program 2304 so that the cell selection device 2300 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 2302. The cell selection device 2300 and the memory 2302 may be provided separately or integrated together.

Optionally, the cell selection device 2300 may further include a transceiver 2305 and an antenna 2306. The transceiver 2305 may be referred to as a transceiver unit, a transceiver, or a communication device transceiver circuit, etc., for implementing a transceiver function. The transceiver 2305 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, the cell selection apparatus 2300 may further include one or more interface circuits 2307. The interface circuit 2307 is used to receive code instructions and transmit them to the processor 2301. The processor 2301 executes the code instructions to enable the cell selection apparatus 2300 to perform the method described in the above method embodiment.

The cell selection apparatus 2300 is a terminal device: the processor 2301 is used to execute Figures 2 to 12, etc.

In one implementation, the processor 2301 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. 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 transmitting or delivering signals.

In one implementation, the processor 2301 may store a computer program 2303, and the computer program 2303 runs on the processor 2301, so that the cell selection device 2300 can perform the method described in the above method embodiment. The computer program 2303 may be fixed in the processor 2301, in which case the processor 2301 may be implemented by hardware.

In one implementation, the cell selection device 2300 may include a circuit, which may implement the functions of sending or receiving or communicating in the aforementioned method embodiment. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as 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 (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The cell selection device described in the above embodiment is a terminal device, but the scope of the cell selection device described in the present disclosure is not limited thereto, and the structure of the cell selection device may not be limited by FIG. 23. The cell selection device may be an independent device or may be part of a larger device. For example, the cell selection device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

(3) ASIC, such as modem;

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

(5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6)Others

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

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

Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may 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 the design requirements of the entire system. 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 scope of protection of the embodiments of the present disclosure.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available 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 (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

At least one in the present application can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present application. In the embodiments disclosed herein, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

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

The predefined in the present application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for cell selection, characterized in that the method is applied to a terminal device, and the method comprises:

Determining whether the terminal device is a vehicle-mounted terminal device;

According to whether the terminal device is a vehicle-mounted terminal device, the terminal device selects a cell associated with an integrated access and backhaul IAB node.
The method according to claim 1, characterized in that the method further comprises:

In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the highest priority.
The method according to claim 1, wherein the mobile IAB node is:

A mobile IAB node that remains relatively stationary with respect to the terminal device.
The method according to claim 3, characterized in that

The mobile IAB node that remains relatively stationary with the terminal device is a mobile IAB node that is on the same vehicle as the terminal device; or

The mobile IAB node that remains relatively still with respect to the terminal device is a mobile IAB node that is mounted on a different vehicle than the terminal device.
The method according to claim 4, characterized in that the method further comprises:

By comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, it is determined whether the mobile IAB node is a mobile IAB node that remains relatively stationary with the terminal device.
The method according to claim 1, characterized in that the method further comprises:

In response to determining that the terminal device is a vehicle-mounted terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the lowest priority.
The method according to claim 1, characterized in that the method further comprises:

In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the stationary IAB node is selected as the cell with the highest priority.
The method according to claim 1, characterized in that the method further comprises:

In response to determining that the terminal device is a non-vehicle terminal device, when the terminal device performs cell selection or cell reselection, the cell associated with the mobile IAB node is selected as the cell with the lowest priority.
The method according to any one of claims 1 to 6, characterized in that the method further comprises:

In response to determining that the mobile IAB node associated with the cell currently selected by the terminal device and the terminal device do not remain relatively stationary, the terminal device is triggered to perform cell reselection.
The method according to claim 9, characterized in that the method further comprises:

By comparing the consistency of the moving speed, longitude and latitude position, and moving direction of the terminal device with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node associated with the cell currently selected by the terminal device, it is determined whether the mobile IAB node associated with the cell currently selected by the terminal device is not relatively stationary with the terminal device.
The method according to any one of claims 1 to 6, characterized in that the method further comprises:

In response to determining that the terminal device is changed from a vehicle-mounted terminal device to a non-vehicle-mounted terminal device, the terminal device is triggered to reselect a cell.
The method according to claim 7 or 8, characterized in that the method further comprises:

In response to determining that the terminal device is changed from a non-vehicle-mounted terminal device to a vehicle-mounted terminal device, the terminal device is triggered to reselect a cell.
The method according to any one of claims 1 to 8, characterized in that the determining whether the terminal device is a vehicle-mounted terminal device comprises:

Determining whether the terminal device is a vehicle-mounted terminal device according to the moving speed, longitude and latitude position, and moving direction of the terminal device and the mobile IAB node;

If the moving speed, longitude and latitude position, and moving direction of the terminal device are consistent with at least two of the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, then the terminal device is determined to be a vehicle-mounted terminal device;

If at least two of the moving speed, longitude and latitude position, and moving direction of the terminal device are inconsistent with the moving speed, longitude and latitude position, and moving direction of the mobile IAB node, the terminal device is determined to be a non-vehicle-mounted terminal device.
The method according to claim 13 is characterized in that the non-vehicle terminal device is a terminal device that supports mobile IAB features.
A cell selection device, characterized in that the device is applied to a terminal device, and the device comprises:

A determination unit, used to determine whether the terminal device is a vehicle-mounted terminal device;

The cell selection unit is used for, according to whether the terminal device is a vehicle-mounted terminal device, the terminal device selects a cell associated with an integrated access and backhaul IAB node.
A communication device, comprising: a transceiver; a memory; a processor, connected to the transceiver and the memory respectively, configured to control the wireless signal reception and transmission of the transceiver by executing computer executable instructions on the memory, and capable of implementing any one of the methods of claims 1-14.
A computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method according to any one of claims 1 to 14 can be implemented.