Method for cell selection or reselection, terminal device, and network device

Abstract

To provide a cell selection or reselection method, a terminal device, and a network device.SOLUTION: A method includes: a step in which a terminal device obtains first information that corresponds to a first cell and that is not specific to a frequency band (band) or a frequency. When a first condition that corresponds to the first information and that is used to determine whether the terminal device can access the first cell is not met, the terminal device is still allowed to select or reselect a cell on the same frequency as the first cell. This avoids / reduces (probability / degree) that the terminal device misses the cell (for example, another cell, a suitable cell, or a cell that can be accessed / camped on) on the same frequency (for example, the same frequency as the first cell), thereby improving cell access performance of the terminal device. For example, a cell selection / reselection process can be accelerated. For example, an initial access process can be accelerated.SELECTED DRAWING: Figure 3A

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to cell selection or reselection methods, terminal devices, and network devices.

Background Art

[0002] In NR, for a cell to which a terminal device attempts to camp, after obtaining the MIB (master information block) and SIB1 (SIB (system information block)), the terminal device can determine whether the terminal device can access the cell based on the MIB and SIB1. However, in some existing cases, when the terminal device cannot access the cell, the terminal device cannot access the in-band cell. Therefore, the cell access performance of the terminal device is affected.

Summary of the Invention

Means for Solving the Problems

[0003] Embodiments of the present application provide a cell selection or reselection method, a terminal device, and a network device to prevent the terminal device from missing a cell having the same frequency as the first cell, thereby improving the cell access performance of the terminal device.

[0004] To achieve the above object, the following technical solutions are used in the embodiments of the present application.

[0005] According to the first aspect, an embodiment of the present application provides a cell selection or reselection method. This method may be executed by a terminal device or by a component within the terminal device (e.g., a chip, a chip system, or a processor). An example where this method is executed by a terminal device is used in the following description. The method includes a step in which the terminal device obtains first information corresponding to a first cell, where the first information is not specific to a frequency band or a frequency. When the first condition corresponding to the first information is not satisfied, the terminal device selects or reselects a cell having the same frequency as the first cell, and the first condition is used to determine whether the terminal device can access the first cell.

[0006] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device is still permitted to select or reselect a cell having the same frequency as the first cell. Thereby, the (probability / degree) that the terminal device misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0007] In one possible embodiment, the first information indicates any one or more of information regarding an initial downlink BWP, information regarding an initial uplink BWP, and a carrier bandwidth. When the first condition corresponding to the first information is not satisfied, the terminal device selecting or reselecting a cell having the same frequency as the first cell specifically means that when the channel bandwidth supported by the terminal device does not satisfy the first condition, the terminal device selects or reselects a cell having the same frequency as the first cell.

[0008] In one possible embodiment, the first condition includes any one or more of: the channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial downlink BWP and less than or equal to the carrier bandwidth; and the channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial uplink BWP and less than or equal to the carrier bandwidth.

[0009] In one possible embodiment, the cell selection or reselection method provided in this embodiment of the present application further includes a step in which the terminal device obtains first indication information and / or second indication information. The first indication information indicates that when the first cell is prohibited or considered to be prohibited by the terminal device, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell. The terminal device selecting or reselecting a cell having the same frequency as the first cell specifically means that the terminal device determines to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

[0010] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device determines that the selection or reselection of a cell having the same frequency as the first cell is permitted based on the instruction content of the first indication information and / or the instruction content of the second indication information. In this way, the terminal device may still select or reselect a cell having the same frequency as the first cell, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0011] In one possible implementation, the first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell. The cell selection or reselection method provided in this embodiment of the present application further includes a step in which when the first condition is not satisfied, the terminal device determines not to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

[0012] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device determines that the selection or reselection of a cell having the same frequency as the first cell is not permitted based on the indication content of the first indication information and / or the indication content of the second indication information. The second indication information is related to whether the terminal device satisfies the first condition. In this way, the terminal device cannot select or reselect a cell having the same frequency as the first cell.

[0013] In one possible implementation, the cell selection or reselection method provided in this embodiment of the present application further includes a step in which the terminal device obtains second information corresponding to the first cell, where the second information is specific to a frequency band or a frequency. The fact that the first condition corresponding to the first information is not satisfied specifically means that the first condition is not satisfied and the second condition corresponding to the second information is satisfied, and the second condition is used to determine whether the terminal device can access the first cell.

[0014] In one possible embodiment, the terminal device acquires second information corresponding to a first cell, and the second information is specific to a frequency band or a frequency. Specifically, when the first condition corresponding to the first information is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, which means that when the first condition is not satisfied and the second condition corresponding to the second information is satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell. The second condition is used to determine whether the terminal device can access the first cell.

[0015] In this embodiment of the present application, since the second information is limited to a frequency band or a frequency, the second condition corresponding to the second information is also limited to a frequency band or a frequency. When the first condition is not satisfied and the second condition corresponding to the second information is satisfied, it can be determined that the terminal device satisfies the second condition. In other words, the reason why the terminal device cannot camp on a cell is not that the frequency band or frequency-related conditions are not satisfied. Therefore, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell. Thereby, it is possible to prevent the terminal device from missing a cell having the same frequency as the first cell, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0016] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied and the second information corresponding to the second information is satisfied, the terminal device determines that the selection or reselection of a cell having the same frequency as the first cell is permitted based on the instruction content of the first instruction information and / or the instruction content of the second instruction information. In this way, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell.

[0017] In one possible embodiment, the second condition includes any one or more of: the terminal device supports the frequency band corresponding to the first cell; the terminal device supports the transmission requirements of the frequency band corresponding to the first cell; and the network device indicates disabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, or the network device indicates enabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, and the terminal device supports a 7.5kHz frequency shift.

[0018] In one possible embodiment, the cell selection or reselection method provided in this embodiment of the present application further includes a step in which when the first condition is not satisfied, the terminal device determines that N cells, at least N cells, at most N cells, or the Nth cell of the frequency of the first cell cannot be accessed, where N is a positive integer greater than or equal to 1. The terminal device determines that the frequency of the first cell has the lowest priority, and / or the terminal device skips selecting or reselecting a cell at the same frequency as the first cell.

[0019] In this embodiment of the present application, since the number of cells that can be accessed by the terminal device is limited, the terminal device can be prevented from continuously attempting to access at the frequency point of the first cell, thereby improving the cell access efficiency and performance of the terminal device.

[0020] In one possible embodiment, the terminal device selecting or reselecting a cell having the same frequency as the first cell specifically means that the terminal device is permitted to select or reselect a cell having the same frequency as the first cell.

[0021] In one possible implementation, the terminal device skipping the selection of a cell with the same frequency as the first cell, or skipping reselection, specifically means that the terminal device is not permitted to select or reselect a cell with the same frequency as the first cell.

[0022] In one possible implementation, the first cell operates in unlicensed spectrum and / or licensed spectrum.

[0023] According to a second aspect, an embodiment of the present application provides a cell selection or reselection method. This method may be executed by a network device, or may be executed by a component within the network device (such as a chip, a chip system, or a processor). An example where this method is executed by a network device is used in the following description. The method includes the step of sending first indication information and / or second indication information to the terminal device so that the network device indicates to the terminal device to determine to select or reselect a cell with the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, based on the first indication information and / or the second indication information. The first information is not specific to a frequency band or frequency, and the first condition is used to determine whether the terminal device can access the first cell. The first indication information indicates that the terminal device is permitted to select or reselect a cell with the same frequency as the first cell when the first cell is prohibited or considered prohibited by the terminal device. The second indication information indicates that the terminal device is permitted to select or reselect a cell with the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell with the same frequency as the first cell is different from the first information corresponding to the first cell.

[0024] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device determines that the selection or reselection of a cell at the same frequency as the first cell is permitted based on the instruction content of the first instruction information and / or the instruction content of the second instruction information. In this way, the terminal device may still select or reselect a cell having the same frequency as the first cell, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0025] In one possible embodiment, the first instruction information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell. The second instruction information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell. The network device is further configured to indicate to the terminal device that when the first condition corresponding to the first information is not satisfied, it is determined not to select or reselect a cell having the same frequency as the first cell based on the first instruction information and / or the second instruction information.

[0026] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device determines that the selection or reselection of a cell at the same frequency as the first cell is not permitted based on the instruction content of the first instruction information and / or the instruction content of the second instruction information. The second instruction information is related to whether the terminal device satisfies the first condition. In this way, the terminal device cannot select or reselect a cell having the same frequency as the first cell.

[0027] According to a third aspect, an embodiment of the present application provides a terminal device. The terminal device includes a first acquisition unit configured to acquire first information corresponding to a first cell, where the first information is not specific to a frequency band or a frequency, and a processing unit configured to select or reselect a cell having the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, where the first condition is used to determine whether the terminal device can access the first cell.

[0028] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device is still permitted to select or reselect a cell having the same frequency as the first cell. Thereby, the probability / degree that the terminal device misses a cell having the same frequency (for example, the same frequency as the first cell), such as another cell, a suitable cell, or a cell that can be accessed / camped on, is avoided / reduced, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0029] In one possible embodiment, the first information indicates any one or more of information related to an initial downlink BWP, information related to an initial uplink BWP, and a carrier bandwidth.

[0030] In one possible embodiment, the first condition includes any one or more of the fact that the channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial downlink BWP and less than or equal to the carrier bandwidth, and the fact that the channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial uplink BWP and less than or equal to the carrier bandwidth.

[0031] In one possible implementation, the terminal device further includes a second acquisition unit configured to acquire first indication information and / or second indication information. The first indication information indicates that when the first cell is prohibited or considered to be prohibited by the terminal device, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell. The processing unit is further configured to determine to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

[0032] In one possible implementation, the first indication information indicates that when the first cell is prohibited or considered to be prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell. The processing unit is configured to determine not to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information when the first condition is not satisfied.

[0033] In one possible implementation, the third acquisition unit is configured to acquire second information corresponding to the first cell, and the second information is specific to a frequency band or a frequency. The fact that the first condition corresponding to the first information is not satisfied specifically means that the first condition is not satisfied and the second condition corresponding to the second information is satisfied. The second condition is used to determine whether the terminal device can access the first cell.

[0034] In this embodiment of the present application, the probability / degree that the terminal device misses a cell (for example, a cell with the same frequency as the first cell, such as another cell, a suitable cell, or a cell that can be accessed / camped on) is avoided / reduced, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced. For example, before selecting or reselecting a cell with the same frequency as the first cell, the terminal device determines that the second condition may be satisfied (for example, this indicates that the reason why the terminal device cannot camp on the cell is not that the frequency band or frequency-related conditions are not satisfied). In addition, a meaningless attempt to access an in-band cell when the second condition is not satisfied is avoided.

[0035] In one possible implementation, the second condition includes any one or more of: the terminal device supports the frequency band corresponding to the first cell; the terminal device supports the transmission requirements of the frequency band corresponding to the first cell; and the network device indicates disabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, or the network device indicates enabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, and the terminal device supports a 7.5kHz frequency shift.

[0036] In one possible embodiment, the terminal device further includes a determination unit configured to determine that when the first condition is not satisfied, N cells of the frequency of the first cell, at least N cells, at most N cells, or the Nth cell cannot be accessed, where N is a positive integer greater than or equal to 1. The processing unit is configured to determine that the frequency of the first cell has the lowest priority and / or not select or reselect cells having the same frequency as the first cell.

[0037] In one possible embodiment, the processing unit is configured to permit the selection or reselection of cells having the same frequency as the first cell.

[0038] In one possible embodiment, the processing unit is configured not to permit the selection or reselection of cells having the same frequency as the first cell.

[0039] In one possible embodiment, the first cell operates in an unlicensed spectrum and / or a licensed spectrum.

[0040] According to a fourth aspect, an embodiment of the present application provides a network device. The network device transmits first indication information and / or second indication information to a terminal device; when a first condition corresponding to the first information is not satisfied, it indicates to the terminal device to determine to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information. The first information is not specific to a frequency band or frequency, and the first condition is used to determine whether the terminal device can access the first cell. The first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell.

[0041] In one possible embodiment, the first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell. The network device is further configured to indicate to the terminal device to determine not to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information when the first condition corresponding to the first information is not satisfied.

[0042] According to a fifth aspect, the present application provides a communication device including a processor, a storage medium, at least one processor, and an interface circuit. The interface circuit is configured to receive a signal from another communication device other than the communication device and transmit the signal to the processor, or transmit a signal from the processor to another communication device other than the communication device. The processor is configured to implement the method described in any one of the first aspect and the second aspect, and possible embodiments of the first aspect and the second aspect, by using a logic circuit or executing code instructions. The communication device may be a network device or a terminal device, or may be a chip in the network device or a chip in the terminal device.

[0043] According to a sixth aspect, the present application provides a communication system including a terminal device and a network device. The terminal device is configured to execute the method described in a possible embodiment of the first aspect, and the network device is configured to execute the method described in a possible embodiment of the second aspect.

[0044] According to a seventh aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium includes computer instructions. When the computer instructions are executed on an electronic device, the electronic device is enabled to execute the cell selection or reselection method described in any one of the first aspect and the second aspect, and possible embodiments of the first aspect and the second aspect.

[0045] According to an eighth aspect, an embodiment of the present application provides a computer program. When the program is called by a processor, the computer program executes the cell selection or reselection method described in any one of the first aspect and the second aspect, and possible embodiments of the first aspect and the second aspect.

[0046] According to a ninth aspect, an embodiment of the present application provides a chip system including one or more processors. When the one or more processors execute instructions, the one or more processors execute a cell selection or reselection method described in any one of the first aspect and the second aspect, and possible embodiments of the first aspect and the second aspect.

[0047] It should be understood that the description of the technical features, technical solutions, beneficial effects, or similar terms in the present application does not imply that all features and advantages can be implemented in any individual embodiment. On the contrary, the description of a feature or beneficial effect is meant to imply that at least one embodiment includes a particular technical feature, technical solution, or beneficial effect. Therefore, the description of the technical features, technical solutions, or beneficial effects in this specification may not necessarily be specific to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in the embodiments may be further combined in any suitable manner. Those skilled in the art will understand that an embodiment may be implemented without one or more specific technical features or technical solutions, or beneficial effects in a particular embodiment. In other embodiments, additional technical features and beneficial effects may be further specified in a particular embodiment that does not reflect all embodiments.

[0048] To more clearly explain the technical solutions in the embodiments of the present application, the accompanying drawings used to explain the embodiments are briefly described below. The accompanying drawings in the following description only show some embodiments of the present application, and it is obvious that those skilled in the art can further derive other accompanying drawings from these accompanying drawings without creative efforts.

Brief Description of the Drawings

[0049]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0050] In the description of the present application, unless otherwise specified, " / " means "or". For example, A / B may indicate A or B. The term "and / or" in this specification only explains the association relationship between related objects and indicates that there can be three relationships. For example, A and / or B may indicate three cases: only A exists, both A and B exist, and only B exists. In addition, "at least one" means one or more, and "a plurality of" means two or more. Terms such as "first" and "second" do not limit the number and execution order, and terms such as "first" and "second" do not indicate a clear difference.

[0051] Terms such as "example" or "for example" are used to represent the following examples, illustrations, or explanations. In the embodiments of the present application, the embodiments or design methods described as "example" or "for example" should not be described as having more advantages than other embodiments or design methods. Exactly, the use of words such as "example" or "for example" is intended to present relative concepts in a specific way.

[0052] One embodiment of the present application provides a cell selection or reselection method. This method is applied to a mobile communication system. FIG. 1 is a schematic diagram of the architecture of a mobile communication system to which one embodiment of the present application is applied. As shown in FIG. 1, the mobile communication system 100 includes at least one network device (e.g., network device 110 and network device 120 in FIG. 1) and at least one terminal device (e.g., terminal device 130, terminal device 140, and terminal device 150 in FIG. 1). The terminal device is wirelessly connected to the network device. The terminal device may be disposed at a fixed position or may be movable. FIG. 1 is merely a schematic diagram. The mobile communication system may further include other network devices not shown in FIG. 1, such as a wireless relay device and a wireless backhaul device. The number of network devices and the number of terminal devices included in the mobile communication system 100 are not limited in this embodiment of the present application.

[0053] The technical solutions in the embodiments of the present application can be applied to various communication systems, such as a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a 5th generation (5G) system or a new radio (NR) system, and future mobile communication systems.

[0054] The method provided in the embodiments of this application is applicable to, but not limited to, fields such as Multicast and Broadcast Services (Multicast / Broadcast Services, or Multicast-Broadcast Services, MBS), vehicle to everything (V2X), public safety, mission critical tasks, transparent IPv4 / IPv6 multicast delivery, IPTV, software delivery over wireless, group communication, Internet of things (IoT), TV Video, TV, linear TV, Live, radio services, etc.

[0055] The terminal device of the present application is an entity on the user side, configured to receive a signal, transmit a signal, or receive and transmit a signal. The terminal device is configured to provide one or more of a voice service and a data connection service to the user. The terminal device may also be referred to as a user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The terminal device may be a vehicle-to-everything (V2X) device, such as a smart car (or intelligent car), digital car, unmanned car (driverless car, pilotless car, or automobile), self-driving car (or autonomous car), pure electric vehicle (pure EV or Battery EV), hybrid electric vehicle (HEV), range extended electric vehicle (REEV), plug-in hybrid electric vehicle (PHEV), or new energy vehicle. Alternatively, the terminal device may be a device-to-device (D2D) device, such as an electricity meter or a water meter.Alternatively, the terminal device may be a mobile station (MS), a subscriber unit, a drone, an Internet of Things (IoT) device, a station (ST) within a WLAN, a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a laptop computer, a Machine Type Communication (MTC) terminal, a handheld device having a wireless communication function, a computing device or another processing device connected to a wireless modem, an in-vehicle device, a wearable device (which may also be referred to as a wearable intelligent device), a low-cost device, a low-power device, or a camera. Alternatively, the terminal device may be a terminal device of a next-generation communication system, for example, a terminal device of a 5G system, a terminal device of a future evolved PLMN, or a terminal device of an NR system.

[0056] The network device in the embodiment of the present application may be a device that provides a wireless communication function to a terminal device and may also be referred to as a radio access network (RAN) device. The network device includes, but is not limited to, a 5G next generation node B (gNB), an evolved node B (eNB), a baseband unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP), a relay station, and an access point. Alternatively, the network device may be a wireless controller, a centralized unit (CU), a distributed unit (DU), etc. in a cloud radio access network (CRAN) scenario. The network device may support at least one wireless communication technology, such as LTE, NR, or WCDMA (registered trademark).

[0057] In some configurations, the gNB may include a Central Unit (CU) and a Distributed Unit (DU). The gNB may further include an Active Antenna Unit (AAU). The CU performs some functions of the gNB, and the DU performs some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services and implements the functions of the Radio Resource Control (RRC) layer and the Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services and executes the functions of the Radio Link Control (RLC) layer, the Media Access Control (MAC) layer, and the Physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and functions related to active antennas. The information of the RRC layer ultimately becomes the information in the PHY layer or is converted from the information in the PHY layer. Therefore, in this architecture, upper layer signaling such as RRC layer signaling can also be considered to be transmitted by the DU or transmitted by the DU and the AAU. It will be understood that the network device may be a device including one or more of the CU node, the DU node, and the AAU node. In addition, the CU may be classified as a network device within the Radio Access Network (RAN), or the CU may be classified as a network device within the Core Network (CN). This is not limited in this application.

[0058] In an embodiment of the present application, a terminal or a network device includes a hardware layer, an operating system layer executed on the hardware layer, and an application layer executed on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as a main memory). The operating system is one or more types of computer operating systems that implement service processing by a process, for example, a Linux (registered trademark) operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as a browser, an address book, document processing software, and instant messaging software. Further, the specific structure of the execution body of the method provided in the embodiment of the present application is not specifically limited in the embodiment of the present application as long as the program recording the code of the method provided in the embodiment of the present application can be executed to communicate according to the method provided in the embodiment of the present application. For example, the execution body of the method provided in the embodiment of the present application may be a terminal or a network device, or may be a functional module within the terminal or the network device that can call and execute the program.

[0059] Furthermore, aspects or features of the present application may be implemented as a method, an apparatus, or a product using standard programming and / or engineering techniques. For example, computer-readable media may include, but are not limited to, magnetic storage components (such as hard disks, floppy disks, or magnetic tapes), optical disks (such as compact discs (CDs) or digital versatile discs (DVDs)), as well as smart cards and flash memory components (such as erasable programmable read-only memories (EPROMs), cards, sticks, or key drives). Additionally, the various storage media described herein may represent one or more devices and / or other machine-readable media configured to store information. The term "machine-readable media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0060] The network device may be an access device through which the terminal device accesses the mobile communication system 100 in a wireless manner, such as a Node B, an evolved Node B (eNodeB), a base station of the NR mobile communication system 100, a base station of a future mobile communication system 100, an access node of a WiFi system, etc. The specific technology and specific device form used by the network device are not limited in the embodiments of the present application.

[0061] The network device and the terminal device may be deployed on land, including indoor devices, outdoor devices, handheld devices, or in-vehicle devices, may be deployed on the water surface, or may be deployed on aircraft, balloons, and satellites in the air. In the embodiments of the present application, the application scenarios of the network device and the terminal device are not limited.

[0062] Embodiments of the present application may be applicable to downlink signal transmission and may also be applicable to uplink signal transmission. In the case of downlink signal transmission, the transmitting device is a network device, and the corresponding receiving device is a terminal device. In the case of uplink signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is a network device. The signal transmission direction is not limited in the embodiments of the present application.

[0063] The network device and the terminal device may communicate with each other using a licensed spectrum, may communicate with each other using an unlicensed spectrum, or may communicate with each other using both a licensed spectrum and an unlicensed spectrum. The network device and the terminal device may communicate with each other by using a spectrum below 6 GHz, or may communicate with each other by using a spectrum above 6 GHz, or may communicate with each other by using both a spectrum below 6 GHz and a spectrum above 6 GHz. The spectrum resources used between the network device and the terminal device are not limited in the embodiments of the present application.

[0064] FIG. 2 is a schematic diagram of the hardware structure of a network device and a terminal device in a mobile communication system 100 according to an embodiment of the present application. As shown in FIG. 2, the terminal device 300 (for example, the terminal devices 130, 140, and 150 in FIG. 1) includes at least one processor 301, at least one memory 302, and at least one transceiver 303. Optionally, the terminal device 300 may further include an output device 304 and an input device 305.

[0065] The processor 301, the memory 302, and the transceiver 303 are connected via a bus. The processor 301 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to control program execution in the solution of this application. The processor 301 may alternatively include a plurality of CPUs, and the processor 301 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may be one or more devices, circuits, or processing cores configured to process data (e.g., computer program instructions).

[0066] Memory 302 may be a read-only memory (ROM) or another type of static memory device capable of storing static information and instructions, or a random access memory (RAM) or another type of dynamic memory device capable of storing information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or another compact disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, or Blu-ray discs, etc.), a disk storage medium or another disk storage device, or any other medium accessible by a computer that can be used to hold or store appropriate program code in the form of instructions or data structures. However, memory 302 is not limited thereto. Memory 302 may exist independently or be connected to processor 301 via a bus. Alternatively, memory 302 and processor 301 may be integrated. Memory 302 is configured to store application program code for executing the solutions of this application, and processor 301 controls the execution. Processor 301 is configured to execute the computer program code stored in memory 302 in order to implement the cell selection or reselection method in the embodiments of this application.

[0067] The transceiver 303 may use any type of device such as a transceiver and is configured to communicate with another device or a communication network such as Ethernet, a Radio Access Network (RAN), or a Wireless Local Area Networks (WLAN). The transceiver 303 includes a transmitter Tx and a receiver Rx.

[0068] The output device 304 communicates with the processor 301 and can display information in a plurality of ways. For example, the output device 304 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, or a projector. The input device 305 communicates with the processor 301 and can receive user input in a plurality of ways. For example, the input device 305 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0069] The network device 200 (e.g., network devices 110 and 120 in FIG. 1) includes at least one processor 201, at least one memory 202, at least one transceiver 203, and at least one network interface 204. The processor 201, memory 202, transceiver 203, and network interface 204 are connected via a bus. The network interface 204 is configured to connect to a core network device via a link (e.g., S1 interface) or to connect to a network interface (not shown) of another network device via a wired or wireless link (e.g., X2 interface). This is not specifically limited in this embodiment of the present application. In addition, for related descriptions of the processor 201, memory 202, and transceiver 203, please refer to the descriptions of the processor 301, memory 302, and transceiver 303 in the terminal device 300. Details will not be described again here.

[0070] The solutions in the embodiments of the present application are described by way of example using a terminal device (e.g., user equipment UE) and a network device, but it should be noted that they are not limited to being applicable only to terminal devices and network devices, and may be further applicable to communication devices that can support the functions required to implement the present method.

[0071] To make the present application clearer, some concepts in the present application are first briefly described.

[0072] 1. System Information (SI) In New Radio (NR), SI may include one master information block (MIB) and several system information blocks (SIBs), e.g., SIB1, SIB2, and SIB3.

[0073] The MIB may include cell barred information and basic physical layer information that is specific to the cell and necessary for further receiving system information. For example, the MIB is periodically broadcast on the broadcast channel (BCH). The MIB may include the following two fields. For specific content, please refer to 3GPP TS38.331: "NR; Radio Resource Control (RRC); Protocol specification".

[0074] (1) Cell barred field. The value of the cell barred field, which means that the cell is barred, is "barred", for example, cellBarred ENUMERATED{barred,notBarred}.

[0075] (2) Intra-frequency reselection field, which is used to control the selection / reselection of intra-frequency cells when the cell or the highest ranked cell is barred or barred by the UE. For example, when the value of the intra-frequency reselection field is permitted and the cell is considered to be barred or barred by the UE, the UE is permitted to select or reselect a cell on the same frequency as the cell. For example, intraFreqReselection ENUMERATED{allowed,notAllowed}.

[0076] SIB1 may include scheduling information of other system information blocks and information necessary for initial access. For example, SIB1 is periodically broadcast on the downlink shared channel (DL-SCH) or transmitted to the UE connected on the DL-SCH by dedicated signaling.

[0077] 2. Cell camping decision in NR In NR, after an idle UE, an inactive UE, or a connected UE for which T311 is operating receives the SIB1 of the first cell, the UE needs to determine whether to camp on the first cell. If the camping conditions are not met, the UE cannot camp on the cell. The camping conditions may include at least one of the following: (1) Whether the UE supports the frequency band corresponding to the first cell; (2) Whether the UE supports the transmission requirements of the frequency band corresponding to the first cell; and (3) Whether the channel bandwidth supported by the UE meets the conditions regarding the bandwidth part (BWP).

[0078] The camping condition (3) may include the following: The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial downlink BWP of the first cell and less than or equal to the carrier bandwidth of the first cell; and The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP of the first cell and less than or equal to the carrier bandwidth of the first cell.

[0079] 3. BWP BWP may also be referred to as the bandwidth part.

[0080] A subset of the total cell bandwidth of one cell is called one BWP. In NR R15, the network device may configure multiple BWPs for the terminal device, but the terminal device can operate with only one BWP, i.e., the active BWP or the initial BWP (initial BWP).

[0081] The above briefly describes some concepts related to the embodiments of this application.

[0082] In this application, the first condition corresponding to the first information can be understood as the first condition related to the first information.

[0083] In this application, the second condition corresponding to the second information can be understood as the second condition related to the second information.

[0084] In this application, the frequency can be understood as / replaced with a frequency point.

[0085] In this application, "acquiring" can be understood as / replaced with "determining" or "receiving".

[0086] In this application, "skipping a selection or reselection" can be understood as / replaced with "not selecting or not reselecting".

[0087] Note that although BWP is used as an example for explanation in this specification, the name of BWP is not limited to BWP. BWP may alternatively have another name. For example, BWP can be understood as a subset of the cell bandwidth or frequency range. For example, BWP can be understood as a part of the cell bandwidth or a part of the cell frequency. Alternatively, the cell bandwidth includes BWP. For example, BWP may alternatively be equal to the cell bandwidth.

[0088] In this application, "not permitted" can be understood as / replaced with "prohibited". For example, "not permitting intra-frequency reselection" can be understood as "prohibiting intra-frequency reselection".

[0089] In this application, "a cell being regarded as prohibited" can be understood as / replaced with "a cell being determined to be prohibited" or "the UE determining that a cell is prohibited".

[0090] In this application, "frequency band" can be understood as / replaced with "band".

[0091] In this application, "regarded as" can be understood as / replaced with "determining" or "determining as".

[0092] In the prior art, for a cell, when camping conditions are not met, the UE cannot camp on the cell, and the UE regards the cell as prohibited and regards intra-frequency reselection as prohibited. As a conclusion, it can be found that both camping condition (1) and camping condition (2) are frequency band or frequency-specific conditions. If the UE determines that it cannot camp on the cell because camping condition (1) and camping condition (2) are not met, it indicates that the UE cannot camp on a cell with the same frequency as that cell. Therefore, it is reasonable to prohibit intra-frequency reselection and also avoid meaningless attempts by the UE for intra-frequency cells. However, camping condition (3) is not a frequency band or frequency-specific condition. If the UE determines that it cannot camp on the cell because camping condition (3) is not met, it does not mean that the UE cannot camp on other cells at the frequency point. Therefore, it is not reasonable to directly prohibit intra-frequency reselection. Thus, the UE may miss cells with the same frequency as the cell, which affects the cell access performance of the UE. For example, assume that the channel bandwidth supported by the UE is 100 MHz, 80 MHz, 40 MHz, or 20 MHz. Information regarding the carrier bandwidth and the initial BWP (the initial downlink BWP is used as an example for explanation) of cell 1 and cell 2 at the same frequency point is different. Details are as follows.

[0093] Cell 1: The carrier bandwidth is 90 MHz, and the bandwidth of the initial downlink BWP is 90 MHz. The 100M channel bandwidth supported by the UE is wider than the carrier bandwidth of the cell, and the 80M, 40M, and 20M channel bandwidths supported by the UE are smaller than the bandwidth of the initial downlink BWP of the cell. Therefore, the UE cannot camp on this cell.

[0094] Cell 2: The carrier bandwidth is 90 MHz, and the bandwidth of the initial downlink BWP is 40 MHz. The 80M and 40M channel bandwidths supported by the UE are smaller than the carrier bandwidth of the cell and are equal to or greater than the bandwidth of the initial downlink BWP of the cell. Therefore, the UE can camp on this cell.

[0095] Therefore, when camping condition (3) is not met, the UE cannot camp on Cell 1. When intra-frequency reselection is directly prohibited, the UE misses Cell 2 on the same frequency (Cell 2 can be camped on).

[0096] To solve the above problems, one embodiment of the present application provides a cell selection or reselection method. The method includes the step of a user equipment UE obtaining first information corresponding to a first cell and not specific to a frequency band or frequency. When the UE does not meet the first condition used to determine whether the UE can access the first cell corresponding to the first information, the UE selects or reselects a cell on the same frequency as the first cell. In this way, the UE may access a cell on the same frequency as the first cell, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced.

[0097] The method in the following embodiments can be implemented on a device having the aforementioned hardware structure (e.g., the terminal device 130, terminal device 140, and terminal device 150 in FIG. 1).

[0098] FIGS. 3A and 3B are schematic flowcharts of a cell selection or reselection method according to an embodiment of the present application. As shown in FIGS. 3A and 3B, the method may include the following steps.

[0099] S301: The user equipment UE obtains first information corresponding to a first cell.

[0100] For example, the first information is not specific to a frequency band or frequency.

[0101] For example, the UE may include any one or more of an idle UE, an inactive UE, and a connected UE for which T311 is operating.

[0102] "The first information is not specific to a frequency band or frequency" may be understood as the first information not being information that defines / limits a frequency band or frequency, or the first information not being information related to a frequency band or frequency granularity.

[0103] For example, the fact that the first information is not information that defines / limits a frequency band or frequency may be understood as the first information not being information related to a frequency band or frequency.

[0104] For example, the fact that the first information is not information related to a frequency band or frequency granularity may be understood as the first information corresponding to different cells on the same frequency band or frequency not necessarily being the same, not necessarily exactly the same, or may be different.

[0105] For example, the first information may indicate any one or more of information related to the initial downlink BWP corresponding to the first cell, information related to the initial uplink BWP corresponding to the first cell, and the carrier bandwidth corresponding to the first cell.

[0106] The information related to the initial downlink BWP may include any one or more of the bandwidth of the initial downlink BWP, the position of the initial downlink BWP, and the first subcarrier spacing (SCS) corresponding to the initial downlink BWP. The information related to the initial downlink BWP may further include other content. This is not limited in this application.

[0107] For example, the position of the initial downlink BWP may include the frequency domain position of the initial downlink BWP.

[0108] For example, the frequency domain position of the initial downlink BWP may include any one or more of the center frequency point of the initial downlink BWP, the start frequency point of the initial downlink BWP (e.g., the lower / left boundary of the initial downlink BWP), and the end / termination frequency point of the initial downlink BWP (e.g., the upper / right boundary of the initial downlink BWP).

[0109] The information related to the initial uplink BWP may include any one or more of the bandwidth of the initial uplink BWP, the position of the initial uplink BWP, and the second subcarrier spacing (SCS) corresponding to the initial uplink BWP. The information related to the initial uplink BWP may further include other content. This is not limited in this application.

[0110] For example, the position of the initial uplink BWP may include the frequency domain position of the initial uplink BWP.

[0111] For example, the frequency domain position of the initial uplink BWP may include any one or more of the center frequency point of the initial uplink BWP, the start frequency point of the initial uplink BWP (for example, the lower / left boundary of the initial uplink BWP), and the end / termination frequency point of the initial uplink BWP (for example, the upper / right boundary of the initial uplink BWP).

[0112] For example, the carrier bandwidth is the carrier bandwidth of the first SCS corresponding to the initial downlink BWP, or the carrier bandwidth of the second SCS corresponding to the initial uplink BWP. In this application, optionally, the carrier bandwidth may be understood as the cell bandwidth.

[0113] It should be noted that the information indicated in the first information is not limited to being indicated in the first information and may alternatively be included in other information. In this application, only the first information is used as an example for explanation. This application is not limited to being included in the same information.

[0114] The first information may be the SI transmitted by the base station to the UE, but is not limited thereto. For example, the first information may be SIB1 within the SI, or may be carried in / included in SIB1.

[0115] In one possible embodiment, S302: When the first condition corresponding to the first information is not satisfied, the UE selects or reselects a cell having the same frequency as the first cell.

[0116] For example, it will be understood that the first condition is not specific to a frequency band or frequency.

[0117] The fact that the first condition is not specific to a frequency band or frequency can be understood as the first condition not being a frequency band or frequency-related condition, or the first condition not being a condition for determining a frequency band or frequency granularity.

[0118] For example, if the first condition is not a condition for determining a frequency band or a frequency granularity, it can be understood that for cells in the same frequency band or different frequencies, the determination results of the first condition are not necessarily the same, and do not necessarily have to be exactly the same, or may be different.

[0119] The first condition is used to determine whether the UE can access the first cell.

[0120] Whether the first cell can be accessed can be understood as / may include whether the first cell can be camped on.

[0121] When the first condition corresponding to the first information is not satisfied, it will be understood that the UE cannot access the first cell.

[0122] When the first condition corresponding to the first information is satisfied, it will be understood that the UE can access the first cell / has an opportunity to access the first cell.

[0123] For example, the fact that the UE cannot access the first cell may include / can be understood as the fact that the UE cannot camp on the first cell, and / or the UE deems the first cell to be prohibited.

[0124] The UE deeming the first cell to be prohibited may include any one or more of the following: the UE cannot access / camp on the first cell; the UE can exclude the first cell (or the prohibited cell) as a candidate cell for cell selection / reselection; the UE can exclude the first cell (or the prohibited cell) as a candidate cell for cell selection / reselection within the first duration; or the UE can exclude the first cell (or the prohibited cell) as a candidate cell for cell selection / reselection within the maximum value of the first duration.

[0125] The first duration may be configured by a network device, pre-configured, defined by a protocol, or set by a UE before distribution. This is not limited in this application. For example, the first duration may be 300 seconds.

[0126] For example, within 300 seconds, the UE may exclude the first cell (or a prohibited cell) as a candidate cell for cell selection / reselection.

[0127] For example, within at most 300 seconds, the UE may exclude the first cell (or a prohibited cell) as a candidate cell for cell selection / reselection.

[0128] The non-satisfaction of the first condition corresponding to the first information may include / be understood to include that the UE / UE information / UE capability / information obtained by the UE (e.g., information / configured information obtained by the UE from a network device) / configured information of the network device does not satisfy the first condition corresponding to the first information, or that the information configured by a base station for the UE does not satisfy the first condition corresponding to the first information.

[0129] For example, the channel bandwidth supported by the UE does not satisfy the first condition.

[0130] Cells having the same frequency as the first cell may include / be understood to include any one or more of the first cell, other cells having the same frequency as the first cell, another cell having the same frequency as the first cell, all cells having the same frequency as the first cell, and some cells having the same frequency as the first cell.

[0131] The UE's selection or reselection of a cell with the same frequency as the first cell may include or be understood to include any one or more of the following: the UE is permitted to select or reselect a cell with the same frequency as the first cell; the UE may select or reselect a cell with the same frequency as the first cell when the selection criteria or reselection criteria are met; intra-frequency reselection is permitted; or the (UE) is permitted to perform intra-frequency reselection.

[0132] For details regarding the selection criteria and reselection criteria, please refer to 3GPP TS38.304: "NR; User Equipment (UE) procedures in Idle mode and RRC Inactive state".

[0133] For example, the first condition may include any one or more of the following: the UE supports the initial downlink BWP (bandwidth); the UE supports the initial uplink BWP (bandwidth); the UE can operate on the initial downlink BWP; the UE can operate on the initial uplink BWP.

[0134] "The UE supports the initial downlink BWP (bandwidth) or the UE can operate on the initial downlink BWP" includes any one or more of the following: the channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial downlink BWP; and / or the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0135] Optionally, the channel bandwidth supported by the UE being greater than or equal to the bandwidth of the initial downlink BWP includes the channel bandwidth supported by the UE including the bandwidth of the initial downlink BWP.

[0136] Optionally, the channel bandwidth supported by the UE being less than or equal to the carrier bandwidth includes the carrier bandwidth including the channel bandwidth supported by the UE.

[0137] For example, that the channel bandwidth supported by the UE includes the bandwidth of the initial downlink BWP can be understood as any one or more of: the channel bandwidth supported by the UE includes the bandwidth of the initial downlink BWP; the channel bandwidth supported by the UE can cover the bandwidth of the initial downlink BWP; the bandwidth of the initial downlink BWP is completely within the frequency domain range of the channel bandwidth supported by the UE.

[0138] For example, that the carrier bandwidth includes the channel bandwidth supported by the UE can be understood as any one or more of: the carrier bandwidth includes the channel bandwidth supported by the UE; the carrier bandwidth can cover the channel bandwidth supported by the UE; the channel bandwidth supported by the UE is completely within the frequency domain range of the carrier bandwidth.

[0139] For example, the non - satisfaction of the first condition, i.e., "the UE does not support the initial downlink BWP (bandwidth) or the UE cannot operate in the initial downlink BWP", includes any one or more of: the channel bandwidth supported by the UE is smaller than the bandwidth of the initial downlink BWP; the channel bandwidth supported by the UE is wider than the carrier bandwidth; the channel bandwidth supported by the UE does not include the bandwidth of the initial downlink BWP; and the carrier bandwidth does not include the channel bandwidth supported by the UE.

[0140] "The UE supports the initial uplink BWP (bandwidth) or the UE can operate in the initial uplink BWP" includes any one or more of: the channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP; and / or the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0141] Optionally, the channel bandwidth supported by the UE being greater than or equal to the bandwidth of the initial uplink BWP includes the channel bandwidth supported by the UE including the bandwidth of the initial uplink BWP.

[0142] Optionally, the channel bandwidth supported by the UE being less than or equal to the carrier bandwidth includes the carrier bandwidth including the channel bandwidth supported by the UE.

[0143] For example, the channel bandwidth supported by the UE including the bandwidth of the initial uplink BWP can be understood as any one or more of the following: the channel bandwidth supported by the UE including the bandwidth of the initial uplink BWP, the channel bandwidth supported by the UE being able to cover the bandwidth of the initial uplink BWP, and the bandwidth of the initial uplink BWP being completely within the frequency domain range of the channel bandwidth supported by the UE.

[0144] For example, the first condition not being met, i.e., "the UE does not support the initial uplink BWP (bandwidth) or the UE cannot operate on the initial uplink BWP", includes any one or more of the following: the channel bandwidth supported by the UE being smaller than the bandwidth of the initial uplink BWP, the channel bandwidth supported by the UE being wider than the carrier bandwidth, the channel bandwidth supported by the UE not including the bandwidth of the initial uplink BWP, and the carrier bandwidth not including the channel bandwidth supported by the UE.

[0145] For example, in the following, the channel bandwidth supported by the UE and the initial downlink BWP are used as examples to explain the meaning of inclusion and exclusion.

[0146] The boundaries of the channel bandwidth supported by the UE include a first boundary and a second boundary, and the first boundary is smaller than the second boundary. The boundaries of the initial downlink BWP include a third boundary and a fourth boundary, and the third boundary is smaller than the fourth boundary. Optionally, the first boundary / third boundary may be referred to as the left boundary or the lower boundary. Optionally, the second boundary / fourth boundary may be referred to as the right boundary or the upper boundary.

[0147] The boundary can be understood as the boundary of the frequency range, the frequency boundary, or the starting point of the frequency.

[0148] For example, when the channel bandwidth supported by the UE includes the initial downlink BWP, the relationship between the channel bandwidth supported by the UE and the initial downlink BWP may include an inclusion relationship and / or an equivalence relationship.

[0149] (1) Inclusion relationship: The channel bandwidth supported by the UE includes the initial downlink BWP.

[0150] The fact that the channel bandwidth supported by the UE includes the initial downlink BWP can be understood as the third boundary being greater than or equal to the first boundary and the fourth boundary being less than or equal to the second boundary.

[0151] (2) Equivalence relationship: The channel bandwidth supported by the UE is equal to the initial downlink BWP.

[0152] The fact that the channel bandwidth supported by the UE is equal to the initial downlink BWP can be understood as the first boundary being equal to the third boundary and the second boundary being equal to the fourth boundary.

[0153] For example, when the channel bandwidth supported by the UE does not include the initial downlink BWP, the relationship between the channel bandwidth supported by the UE and the initial downlink BWP may include an intersection relationship or a non - intersection relationship.

[0154] (1) Intersection relationship: There is an intersection between the channel bandwidth supported by the UE and the initial downlink BWP.

[0155] The intersection between the channel bandwidth supported by the UE and the initial downlink BWP can be understood as any one of the following.

[0156] (a) The third boundary is larger than the first boundary and smaller than the second boundary, and the fourth boundary is larger than the second boundary.

[0157] (b) The first boundary is larger than the third boundary and smaller than the fourth boundary, and the second boundary is larger than the fourth boundary.

[0158] (2) Non-intersection relationship: There is no intersection between the channel bandwidth supported by the UE and the initial downlink BWP.

[0159] The non-intersection between the channel bandwidth supported by the UE and the initial downlink BWP can be understood as any one of the following.

[0160] (a) The third boundary is greater than or equal to the second boundary.

[0161] (b) The first boundary is greater than or equal to the fourth boundary.

[0162] Optionally, the channel bandwidth supported by the UE may be understood as the channel bandwidth supported by the UE (for example, the first channel bandwidth supported by the UE).

[0163] Optionally, the channel bandwidth supported by the UE may include any one or more of the downlink channel bandwidth supported by the UE (for example, the first downlink channel bandwidth supported by the UE) or the uplink channel bandwidth supported by the UE (for example, the first uplink channel bandwidth supported by the UE).

[0164] Optionally, the channel bandwidth supported by the UE may include any one or more of the maximum transmission bandwidth configuration of the channel bandwidth supported by the UE, the transmission bandwidth configuration of the channel bandwidth supported by the UE, the maximum transmission bandwidth of the channel bandwidth supported by the UE, or the transmission bandwidth of the channel bandwidth supported by the UE.

[0165] Optionally, the downlink channel bandwidth supported by the UE may include any one or more of the maximum transmission bandwidth configuration of the downlink channel bandwidth supported by the UE, the transmission bandwidth configuration of the downlink channel bandwidth supported by the UE, the maximum transmission bandwidth of the downlink channel bandwidth supported by the UE, or the transmission bandwidth of the downlink channel bandwidth supported by the UE.

[0166] Optionally, the uplink channel bandwidth supported by the UE may include any one or more of the maximum transmission bandwidth configuration of the uplink channel bandwidth supported by the UE, the transmission bandwidth configuration of the uplink channel bandwidth supported by the UE, the maximum transmission bandwidth of the uplink channel bandwidth supported by the UE, or the transmission bandwidth of the uplink channel bandwidth supported by the UE.

[0167] In this application, optionally, the carrier bandwidth may include the carrier bandwidth of the SCS. For example, the carrier bandwidth is the carrier bandwidth of the first SCS corresponding to the initial downlink BWP, or the carrier bandwidth is the carrier bandwidth of the second SCS corresponding to the initial uplink BWP.

[0168] In this application, optionally, the carrier bandwidth may be understood as the cell bandwidth.

[0169] For example, the first condition includes any one or more of the following: (1) The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP, and / or the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth; and (2) The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP, and / or the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0170] For example, the first condition includes that the channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial downlink BWP and the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0171] For example, the first condition includes that the channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP and the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0172] For example, the first condition includes the following: (1) The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP, and the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth; and (2) The channel bandwidth supported by the UE is greater than or equal to the bandwidth of the initial uplink BWP, and the channel bandwidth supported by the UE is less than or equal to the carrier bandwidth.

[0173] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the UE selects or reselects a cell with the same frequency as the first cell. Thereby, the (probability / degree) that the UE misses a cell (for example, a cell with the same frequency as the first cell, such as another cell, a suitable cell, or a cell that can be accessed / camped on) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced.

[0174] In some embodiments, the cell selection or reselection method provided in this embodiment of the present application further includes the following.

[0175] S303: The UE obtains first indication information, and the first indication information indicates whether the UE is permitted or not (or whether intra-frequency reselection is permitted) to select or reselect a cell having the same frequency as the first cell when the first cell is prohibited or considered prohibited by the UE. Correspondingly, for example, the network device transmits the first indication information to the UE.

[0176] For example, the function of the first indication information may also be understood as that when the cell, the highest-ranked cell, or the first cell is prohibited or considered prohibited by the UE, the first indication information is used to control the selection / reselection of intra-frequency cells (or is used to control intra-frequency reselection).

[0177] The highest-ranked cell may also be understood as the cell ranked first initially (e.g., highest ranked cell), for example, the cell having the best signal strength.

[0178] The highest-ranked cell or the cell ranked first initially may be replaced by the best cell (e.g., best cell). For example, the first cell may be understood as a cell or the highest-ranked cell.

[0179] "When the first cell is prohibited or considered prohibited by the UE" may include / be understood as / be replaced by when the cell or the highest-ranked cell (highest ranked cell) or the first cell is prohibited or considered prohibited by the UE.

[0180] For example, when setting the first instruction information, the network device may consider factors such as load and / or interference (e.g., co-channel interference).

[0181] For example, when the load of a cell with the same frequency as the first cell is heavy and UE access is not expected, the network device may set the first instruction information corresponding to the first cell to "not permitted". For example, when the load of a cell with the same frequency as the first cell is light and the UE can access these cells, the network device may set the first instruction information corresponding to the first cell to "permitted".

[0182] For example, the signal of the first cell is strong. When the UE cannot access the first cell or when the UE accesses another cell with the same frequency as the first cell, strong interference may be caused. The network device may set the first instruction information corresponding to the first cell to "not permitted".

[0183] "Not permitted" indicates that when the first cell is considered prohibited or prohibited by the UE, the UE is not permitted to select or reselect a cell with the same frequency as the first cell.

[0184] "Permitted" indicates that when the first cell is considered prohibited or prohibited by the UE, the UE is permitted to select or reselect a cell with the same frequency as the first cell.

[0185] To simplify the description, the first instruction information indicates that when the first cell is considered prohibited or prohibited by the UE, the UE is not permitted to select or reselect a cell with the same frequency as the first cell. This can be simplified because the first instruction information indicates "not permitted".

[0186] For simplicity, the first indication information indicates that when the first cell is prohibited or considered to be prohibited by the UE, the UE is permitted to select or reselect a cell having the same frequency as the first cell. This can be simplified since the first indication information indicates "permitted".

[0187] "Permitted" indicates that when the first cell is prohibited or considered to be prohibited by the UE, the UE is permitted to select or reselect a cell having the same frequency as the first cell.

[0188] For example, the first indication information may be an intra-frequency reselection field in the MIB.

[0189] For example, the first indication information may be included in the MIB, but is not limited to the MIB, and may be included in SIB1 or another message (for example, a physical layer message (for example, DCI), a MAC layer message (for example, MAC CE), a broadcast message (for example, system information), or an RRC message (for example, dedicated information)).

[0190] In actual applications, for example, in another possible implementation (for example, a scenario where the load of a cell having the same frequency as the first cell is considered), S302 may be specifically implemented by using / selecting to use the first indication information.

[0191] Correspondingly, in another possible implementation, S302 may be specifically replaced with determining whether the UE selects or reselects a cell having the same frequency as the first cell based on the first indication information, or determining not to select or reselect a cell having the same frequency as the first cell based on the first indication information, when the UE does not meet the first condition.

[0192] When the terminal device determines to select or reselect a cell with the same frequency as the first cell based on the first indication information, when the first indication information indicates "permission", the terminal device includes determining to select or reselect a cell with the same frequency as the first cell.

[0193] When the terminal device determines not to select or reselect a cell with the same frequency as the first cell based on the first indication information, when the first indication information indicates "non - permission", the terminal device includes determining not to select or reselect a cell with the same frequency as the first cell.

[0194] In this application, "indicate" can be replaced with / understood as "set to".

[0195] When the terminal device determines to select or reselect a cell with the same frequency as the first cell: it can include any one or more of the following: the terminal device determines that the selection or reselection of a cell with the same frequency as the first cell is permitted; the terminal device is permitted to select or reselect a cell with the same frequency as the first cell; the terminal device selects or reselects a cell with the same frequency as the first cell; the terminal device determines that intra - frequency reselection is permitted or the terminal device determines that it is permitted to perform intra - frequency reselection; whether intra - frequency reselection is permitted or (the terminal device) is permitted to perform intra - frequency reselection, and can be replaced with / understood as such.

[0196] For example, when the terminal device determines to select or reselect a cell with the same frequency as the first cell, it should be understood that the terminal device may or may not select or reselect a cell with the same frequency as the first cell. The terminal device has the right to select / reselect a cell with the same frequency as the first cell, but is not limited to selecting or reselecting a cell with the same frequency as the first cell.

[0197] The terminal device determining not to select or reselect a cell having the same frequency as the first cell may include / or may be replaced with / or may be understood as any one or more of: the terminal device determining that selection or reselection of a cell having the same frequency as the first cell is not permitted; the terminal device not being permitted to select or reselect a cell having the same frequency as the first cell; the terminal device determining not to select or reselect a cell having the same frequency as the first cell; the terminal device determining that intra-frequency reselection is not permitted; the terminal device determining that execution of intra-frequency reselection is not permitted; intra-frequency reselection not being permitted or the (terminal device) not being permitted to perform intra-frequency reselection.

[0198] The terminal device determining not to select or reselect a cell having the same frequency as the first cell may include / or may be replaced with / or may be understood as any one or more of: the terminal device not being permitted to select or reselect a cell having the same frequency as the first cell; and intra-frequency reselection not being permitted or the (terminal device) not being permitted to perform intra-frequency reselection.

[0199] In this application, not permitted may be understood as cannot or barred.

[0200] Optionally, the terminal device determining not to select or reselect a cell having the same frequency as the first cell may include / or may be replaced with / or may be understood as: the terminal device being able to exclude a cell having the same frequency as the first cell (or a barred cell) as a candidate cell for cell selection / reselection; the terminal device being able to exclude a cell having the same frequency as the first cell (or a barred cell) as a candidate cell for cell selection / reselection within a second duration; or the terminal device being able to exclude a cell having the same frequency as the first cell (or a barred cell) as a candidate cell for at most cell selection / reselection within a second duration.

[0201] The second duration may be configured by the network device, may be pre-configured, may be defined by a protocol, or may be set by the terminal device before distribution. This is not limited in the present application. For example, the second duration may be 300 seconds.

[0202] For example, the terminal device may exclude a cell (or prohibited cell) having the same frequency as the first cell as a candidate cell within cell selection / reselection within 300 seconds.

[0203] For example, the terminal device may exclude a cell (or prohibited cell) having the same frequency as the first cell as a candidate cell for cell selection / reselection within a maximum of 300 seconds.

[0204] Optionally, the terminal device not selecting or reselecting a cell having the same frequency as the first cell may include / replace / be understood as: the terminal device determining the first frequency as a frequency with a low / lowest priority; the terminal device determining the first frequency as a frequency with a low / lowest priority within a third duration; or the terminal device determining the first frequency as a frequency with a low / lowest priority within a maximum of the third duration.

[0205] For example, the first frequency is the frequency corresponding to the first cell or the frequency of the first cell.

[0206] The terminal device determining the first frequency as a frequency with a low / lowest priority may include / replace / be understood as the terminal device considering the first frequency as a frequency with a low / lowest priority.

[0207] The third duration may be configured by the network device, may be pre-configured, may be defined by a protocol, or may be set by the terminal device before distribution. This is not limited in this application. For example, the third duration may be 300 seconds.

[0208] For example, when the first condition is not satisfied, the terminal device determines, based on the first instruction information, that the selection or reselection of a cell at the same frequency as the first cell is permitted, which includes two cases. In the first case, the terminal device may select or reselect a cell at the same frequency as the first cell. In the second case, the terminal device may not select or reselect a cell at the same frequency as the first cell. This is not limited in this application.

[0209] For example, when the first condition is not satisfied, the terminal device determines, based on the first instruction information, that the selection or reselection of a cell at the same frequency as the first cell is not permitted, which includes only one case where the terminal device cannot select or reselect a cell at the same frequency as the first cell.

[0210] In this embodiment, the first condition is a condition corresponding to the first information. For specific details, refer to the relevant descriptions of the foregoing embodiments. Details are not described again here.

[0211] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the terminal device determines whether to select or reselect a cell having the same frequency as the first cell based on the instruction content of the first instruction information, or determines not to select or reselect a cell having the same frequency as the first cell based on the instruction content of the first instruction information. In this way, the probability / degree that the terminal device misses a cell (for example, a cell having the same frequency as the first cell, such as another cell, an appropriate cell, or a cell that can be accessed / camped on) is avoided / reduced, thereby improving the cell access performance of the terminal device. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the terminal device can be reduced.

[0212] In some embodiments, the cell selection or reselection method provided in this embodiment of the present application further includes the following.

[0213] S304: The terminal device obtains second instruction information, and the second instruction information indicates whether the terminal device is permitted to select or reselect a cell having the same frequency as the first cell when the first cell is prohibited or considered prohibited because the first condition is not satisfied, or indicates whether in-band reselection is permitted, or indicates whether the first information corresponding to the cell having the same frequency as the first cell is different from or the same as the first information corresponding to the first cell. Correspondingly, for example, the network device transmits the second instruction information to the terminal device.

[0214] For example, the function of the second instruction information can also be understood as follows: Since the terminal device does not satisfy the first condition, the terminal device cannot access the first cell (or the first cell is prohibited or prohibited by the terminal device). In this case, the second instruction information is used to control in-band cell selection / reselection (or used to control in-band reselection).

[0215] For example, the network device may set the second instruction information to "permitted" or "not permitted".

[0216] When the second instruction information is set to "permitted", it indicates that when the first cell is prohibited or considered prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell.

[0217] When the second instruction information is set to "not permitted", it indicates that when the first cell is prohibited or considered prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell.

[0218] For example, the network device may set the second instruction information to "same" or "different".

[0219] When the second instruction information is set to "same", it indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell.

[0220] That the first information corresponding to a cell having the same frequency as the first cell is the same as the first information corresponding to the first cell means that: the first information corresponding to all cells of the first frequency / X percent or more (or X percent or less) of the cells of the first frequency / N or more (or N or less) cells of the first frequency is the same as the first information corresponding to the first cell; and that the first information corresponding to a cell having the same frequency as the first cell (e.g., all cells, all cells other than the first cell, some cells (e.g., X percent or more (or X percent or less) of the cells), N or more (or N or less) cells, or one cell) is the same as the first information corresponding to the first cell may include / may be replaced with / may be understood as any one or more of the above.

[0221] When the second instruction information is set to "different", it indicates that the first information corresponding to a cell having the same frequency as the first cell is different from the first information corresponding to the first cell.

[0222] That the first information corresponding to a cell having the same frequency as the first cell is different from the first information corresponding to the first cell means that: the first information corresponding to all cells on the first frequency / frequency band / X percent or more (or X percent or less) of the cells of the first frequency / N or more (or N or less) cells on the first frequency / frequency band is different from the first information corresponding to the first cell; and that the first information corresponding to a cell having the same frequency as the first cell (e.g., all cells, all cells other than the first cell, some cells (e.g., X percent or more (or X percent or less) of the cells), N or more (or N or less) cells, or a cell) is different from the first information corresponding to the first cell may include / may be replaced with / may be understood as any one or more of the above.

[0223] The values of X and N may be configured by a network device, pre-configured, defined by a protocol, or set by a UE before delivery. This is not limited in the present application. For example, X may be 70, 80, or 90. For example, N may be 20, 50, or 100.

[0224] For example, the first frequency band is a frequency band corresponding to the first cell or the frequency band of the first cell.

[0225] For simplicity of explanation, the second indication information indicates that when the first cell is prohibited or considered prohibited because the first condition is not satisfied, the UE is not permitted to select or reselect a cell having the same frequency as the first cell. This can be simplified because the second indication information indicates "not permitted".

[0226] For simplicity of explanation, the second indication information indicates that when the first cell is prohibited or considered prohibited because the first condition is not satisfied, the UE is permitted to select or reselect a cell having the same frequency as the first cell. This can be simplified because the second indication information indicates "permitted".

[0227] For simplicity of explanation, the second indication information indicates that the first information corresponding to a cell having the same frequency as the first cell is the same as the first information corresponding to the first cell. This can be simplified because the second indication information indicates "same".

[0228] For simplicity of explanation, the second indication information indicates that the first information corresponding to a cell having the same frequency as the first cell is different from the first information corresponding to the first cell. This can be simplified because the second indication information indicates "different".

[0229] For example, the second indication information may be included in SIB1, but is not limited to SIB1, and may be included in another message (for example, a physical layer message (for example, DCI), a MAC layer message (for example, MAC CE), a broadcast message (for example, system information), or an RRC message (for example, dedicated information)).

[0230] In actual applications, for example, in another possible implementation form (for example, a scenario where the first information is not limited to a frequency band or frequency), S302 may be specifically implemented by using the second indication information / by selecting to use the second indication information.

[0231] The fact that the first information is not limited to a frequency band or frequency can be understood / replaced as meaning that the first information is not information that defines a frequency band or frequency.

[0232] Correspondingly, in another possible embodiment, S302 may be specifically replaced with the UE determining whether to select or reselect a cell having the same frequency as the first cell based on the second indication information when the UE does not meet the first condition, or determining not to select or reselect a cell having the same frequency as the first cell based on the second indication information.

[0233] The UE determining to select or reselect a cell having the same frequency as the first cell based on the second indication information includes the UE determining to select or reselect a cell having the same frequency as the first cell when the second indication information indicates "permitted" or "different".

[0234] The UE determining not to select or reselect a cell having the same frequency as the first cell based on the second indication information includes the UE determining not to select or reselect a cell having the same frequency as the first cell when the second indication information indicates "not permitted" or "the same".

[0235] For the related content on the UE's determination to select or reselect a cell with the same frequency as the first cell, please refer to the related description in the foregoing embodiments. Details will not be described again here.

[0236] For the related content on the UE's determination not to select or reselect a cell with the same frequency as the first cell, please refer to the related description in the foregoing embodiments. Details will not be described again here.

[0237] The related description in the foregoing embodiments is also applicable herein, and details will not be described again here.

[0238] For example, when the first condition is not satisfied, the UE determines, based on the second indication information, that the selection or reselection of a cell with the same frequency as the first cell is permitted, which includes two cases. In the first case, the UE may select or reselect a cell with the same frequency as the first cell. In the second case, the UE may not select or reselect a cell with the same frequency as the first cell. This is not limited in this application.

[0239] For example, when the first condition is not satisfied, the UE determines, based on the second indication information, that the selection or reselection of a cell with the same frequency as the first cell is not permitted, which includes only one case where the UE cannot select or reselect a cell with the same frequency as the first cell.

[0240] In this embodiment, the first condition is a condition corresponding to the first information. For specific details, please refer to the related description in the foregoing embodiments. Details will not be described again here.

[0241] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the UE determines whether to select or reselect a cell having the same frequency as the first cell based on the instruction content of the second instruction information, or determines not to select or reselect a cell having the same frequency as the first cell based on the instruction content of the second instruction information. In this way, the probability / degree that the UE misses a cell having the same frequency (for example, the same frequency as the first cell) (for example, another cell, a suitable cell, or a cell that can be accessed / camped on) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced.

[0242] Of course, in some embodiments, the UE may obtain both the first instruction information and the second instruction information. The cell selection or reselection method provided in this embodiment of the present application further includes the following.

[0243] S305: The UE obtains the first instruction information and the second instruction information. Correspondingly, for example, the network device sends the first instruction information and the second instruction information to the UE.

[0244] For the related content of the first instruction information and the second instruction information, please refer to the foregoing description. Details are not described again here.

[0245] Correspondingly, in another possible embodiment, S302 may be specifically replaced with that when the UE does not satisfy the first condition, the UE determines whether to select or reselect a cell having the same frequency as the first cell based on the first instruction information and the second instruction information, or determines not to select or reselect a cell having the same frequency as the first cell based on the first instruction information and the second instruction information.

[0246] The UE determines to select or reselect a cell on the same frequency as the first cell based on the first indication information and the second indication information, or determines not to select or reselect a cell on the same frequency as the first cell based on the first indication information and the second indication information. When both the first indication information and the second indication information indicate "permitted" and / or "different", it includes the UE determining to select or reselect a cell on the same frequency as the first cell. When at least one of the first indication information and the second indication information indicates "not permitted" or "the same", the UE determines not to select or reselect a cell on the same frequency as the first cell.

[0247] Specifically, the following cases may occur.

[0248] In the first case, when the first indication information indicates "permitted" and the second indication information indicates "permitted" or "different", the UE determines to select or reselect a cell on the same frequency as the first cell.

[0249] In the second case, when the first indication information indicates "permitted" and the second indication information indicates "not permitted" or "the same", the UE determines not to select or reselect a cell on the same frequency as the first cell.

[0250] In the third case, when the first indication information indicates "not permitted" and the second indication information indicates "permitted" or "different", the UE determines not to select or reselect a cell on the same frequency as the first cell.

[0251] In the fourth case, when the first indication information indicates "not permitted" and the second indication information indicates "not permitted" or "the same", the UE determines not to select or reselect a cell on the same frequency as the first cell.

[0252] For the content related to the first instruction information and the second instruction information, and the related explanations regarding "the UE determines to select or reselect a cell having the same frequency as the first cell" and "the UE determines not to select or reselect a cell having the same frequency as the first cell", please refer to the foregoing explanations. Details will not be described again here.

[0253] For the related content regarding the UE determining to select or reselect a cell having the same frequency as the first cell, please refer to the related explanations in the foregoing embodiments. Details will not be described again here.

[0254] For the related content regarding the UE determining not to select or reselect a cell having the same frequency as the first cell, please refer to the related explanations in the foregoing embodiments. Details will not be described again here.

[0255] The related explanations in the foregoing embodiments are also applicable to this specification, and details will not be described again here.

[0256] In this embodiment, the first condition is a condition corresponding to the first information. For specific content, please refer to the related explanations in the foregoing embodiments. Details will not be described again here.

[0257] For example, when the first condition is not satisfied, the UE determines, based on the first instruction information and the second instruction information, that the selection or reselection of a cell having the same frequency as the first cell is permitted, which includes two cases. In the first case, the UE may select or reselect a cell having the same frequency as the first cell. In the second case, the UE may not select or reselect a cell having the same frequency as the first cell. This is not limited in this application.

[0258] For example, when the first condition is not satisfied, the UE determines that selection or reselection of a cell on the same frequency as the first cell is not permitted based on the first indication information and the second indication information, which includes only one case where the UE cannot select or reselect a cell on the same frequency as the first cell.

[0259] In this embodiment of the present application, when the first condition corresponding to the first information is not satisfied, the UE determines whether to select or reselect a cell on the same frequency as the first cell based on the indication content of the first indication information and the indication content of the second indication information, or determines not to select or reselect a cell on the same frequency as the first cell based on the indication content of the first indication information and the indication content of the second indication information. In this way, the probability / degree that the UE misses a cell (for example, a cell on the same frequency as the first cell, such as another cell, a suitable cell, or a cell that can be accessed / camped on) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced.

[0260] In some embodiments, the cell selection or reselection method provided in this embodiment of the present application further includes the following.

[0261] S306: The UE obtains second information corresponding to the first cell.

[0262] For example, the second information is specific to a frequency band or a frequency.

[0263] "The second information is specific to a frequency band or a frequency" can be understood as the second information being limited to information that defines a frequency band or a frequency, or the second information being information related to a frequency band or a frequency granularity.

[0264] For example, it can be understood that the second information being limited to / being information that defines a frequency band or a frequency means that the second information is information related to a frequency band or a frequency.

[0265] For example, it can be understood that the second information being information related to a frequency band or a frequency granularity means that the second information of different cells on the same frequency band or frequency is the same or exactly the same.

[0266] For example, the second information may indicate any one or more of information related to the frequency band corresponding to the first cell, information related to the transmission requirements of the frequency band corresponding to the first cell, and dynamic spectrum sharing information of the frequency band of the first cell.

[0267] It should be noted that the information indicated by the second information is not limited to being indicated by the second information and may alternatively be included in other information. In this application, only the second information is used as an example for explanation. This application is not limited to being included in the same information.

[0268] The second information may be SI transmitted by the base station to the UE, but is not limited thereto. For example, the second information may be SIB1 within the SI, or may be carried in / included in SIB1. For example, the second information may alternatively be included in another message (for example, a physical layer message (for example, DCI), a MAC layer message (for example, MAC CE), a broadcast message (for example, system information)), or an RRC message (for example, dedicated information).

[0269] Correspondingly, in one possible implementation, S302 may be replaced with the UE being permitted to select or reselect a cell having the same frequency as the first cell when the first condition is not satisfied and the second condition corresponding to the second information is satisfied.

[0270] For example, it will be understood that the second condition is specific to a frequency band or a frequency.

[0271] That the second condition is specific to a frequency band or a frequency can be understood as meaning that the second condition is a frequency band or frequency-related condition, or that the second condition is a condition for determining a frequency band or a frequency granularity.

[0272] For example, that the second condition is a condition for determining a frequency band or a frequency granularity can be understood as meaning that for different cells in the same frequency band or frequency, the determination result of the second condition is the same or exactly the same.

[0273] The second condition is used to determine whether the UE can access the first cell.

[0274] It will be understood that when the second condition corresponding to the second information is not satisfied, the UE cannot access the first cell.

[0275] It will be understood that when the second condition corresponding to the second information is satisfied, the UE has the opportunity to access / can access the first cell.

[0276] For example, that the UE can access the first cell can be understood as including / meaning that the UE can camp on the first cell and / or that the UE regards the first cell as a cell to which access is permitted.

[0277] Regarding the related description of "the UE cannot access the first cell", reference is made to the aforementioned related content, and the details will not be described again here.

[0278] It can be understood that the satisfaction of the second condition corresponding to the second information means that the UE / UE information / UE capability / information obtained by the UE (for example, information obtained by the UE from a network device / configuration information) / configuration information of the network device satisfies the second condition corresponding to the second information, or that the information configured by the base station for the UE satisfies the second condition corresponding to the second information.

[0279] The second condition includes any one or more of the following: (1) The UE supports the frequency band corresponding to the first cell; (2) The UE supports the transmission requirements of the frequency band corresponding to the first cell; and (3) The network device indicates to disable NR uplink transmission with a 7.5k frequency shift to the LTE raster, or the network device indicates to enable NR uplink transmission with a 7.5k frequency shift to the LTE raster, and the UE supports a 7.5kHz frequency shift.

[0280] NR uplink transmission with a 7.5k frequency shift to the LTE raster can be understood as dynamic spectrum sharing or dynamic spectrum sharing in an NR TDD frequency band (for example, frequency band n48, n38, or n40).

[0281] The UE's support for the frequency band corresponding to the first cell may include / may be replaced by / may be understood as any one or more of the following: the UE supports one or more frequency bands corresponding to the first cell, the UE supports one or more downlink bands, and the UE supports one or more uplink bands corresponding to the first cell. The bands supported by the UE are not downlink only bands. The UE supports one or more frequency bands corresponding to the first cell for downlink. The UE supports one or more frequency bands corresponding to the first cell for uplink.

[0282] For example, a UE supporting a frequency band corresponding to a first cell may include: the UE supporting one or more frequency bands corresponding to the first cell for DL for TDD; the UE supporting one or more DL frequency bands corresponding to the first cell for TDD; the UE supporting one or more frequency bands corresponding to the first cell for DL for TDD, where these frequency bands are not downlink only bands; or the UE supporting one or more DL frequency bands corresponding to the first cell for TDD, where these frequency bands are not downlink only bands.

[0283] For example, a UE supporting a frequency band corresponding to a first cell may include: for UL for FDD, the UE supports one or more frequency bands corresponding to the first cell; for FDD, the UE supports one or more UL frequency bands corresponding to the first cell; for UL for FDD, the UE supports one or more frequency bands corresponding to the first cell, and these frequency bands are not downlink only bands; for FDD, the UE supports one or more UL frequency bands corresponding to the first cell, and these frequency bands are not downlink only bands; for UL for FDD, the UE supports one or more frequency bands corresponding to the first cell, and for DL, the UE supports one or more frequency bands corresponding to the first cell; for FDD, the UE supports one or more UL frequency bands corresponding to the first cell, and the UE supports one or more DL frequency bands corresponding to the first cell; for UL for FDD, the UE supports one or more frequency bands corresponding to the first cell, and for DL, the UE supports one or more frequency bands corresponding to the first cell, and these frequency bands are not downlink only bands; or for FDD, the UE supports one or more UL frequency bands corresponding to the first cell, and the UE supports one or more DL frequency bands corresponding to the first cell, and these frequency bands are not downlink only bands.

[0284] A UE supporting a transmission requirement for a frequency band corresponding to a first cell may include, be replaced with, or be understood as: for a frequency band supported by the UE (e.g., one frequency band), the UE supports a transmission requirement corresponding to the frequency band (e.g., one or more transmission requirements or at least one transmission requirement).

[0285] For example, a UE supporting a transmission requirement for a frequency band corresponding to a first cell may include the UE supporting a transmission requirement (e.g., one or more transmission requirements or at least one transmission requirement) corresponding to a frequency band (e.g., one frequency band) supported by the UE for DL for TDD; or the UE supporting a transmission requirement (e.g., one or more transmission requirements or at least one transmission requirement) corresponding to a DL frequency band (e.g., one frequency band) supported by the UE for TDD.

[0286] The frequency band supported by the UE can be understood as a frequency band supported by the UE and corresponding to the first cell.

[0287] For example, a UE supporting a transmission requirement for a frequency band corresponding to a first cell may include the UE supporting a transmission requirement (e.g., one or more transmission requirements or at least one transmission requirement) corresponding to a frequency band (e.g., one frequency band) supported by the UE for UL for FDD; or the UE supporting a transmission requirement (e.g., one or more transmission requirements or at least one transmission requirement) corresponding to a UL frequency band (e.g., one frequency band) supported by the UE for FDD.

[0288] For example, indicating that a network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster may include: indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for a frequency band supported by the UE (e.g., one frequency band); indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for a frequency band corresponding to a transmission requirement supported by the UE (e.g., one frequency band); indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for a frequency band supported by the UE and corresponding to a transmission requirement supported by the UE (e.g., one frequency band); indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for TDD for a frequency band supported by the UE (e.g., frequency bands n48, n38, or n40); indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for TDD for a frequency band corresponding to a transmission requirement supported by the UE (e.g., frequency bands n48, n38, or n40); or indicating that the network device disables NR uplink transmission with a 7.5 kHz frequency shift to the LTE raster for TDD for a frequency band supported by the UE and corresponding to a transmission requirement supported by the UE (e.g., frequency bands n48, n38, or n40).

[0289] For example, indicating that a network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that a UE supports a 7.5kHz frequency shift means: for a frequency band supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift; for a frequency band corresponding to a transmission requirement supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift; for a frequency band supported by the UE and corresponding to a transmission requirement supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift; for a frequency band supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift for TDD (e.g., frequency bands n48, n38, or n40); for a frequency band corresponding to a transmission requirement supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift for TDD (e.g., frequency bands n48, n38, or n40); or, for a frequency band supported by the UE and corresponding to a transmission requirement supported by the UE (e.g., one frequency band), indicating that the network device enables NR uplink transmission with a 7.5k frequency shift to LTE raster, and that the UE supports a 7.5kHz frequency shift for TDD (e.g., frequency bands n48, n38, or n40), may be included.

[0290] For example, the UE supporting a 7.5 kHz frequency shift may include the UE supporting a 7.5 kHz frequency shift for a 30 kHz SCS.

[0291] The first condition is a condition corresponding to the first information. For specific embodiments, refer to the description of the foregoing embodiments.

[0292] In this embodiment of the present application, when the first condition is not satisfied and the second condition corresponding to the second information is satisfied, the UE selects or reselects a cell having the same frequency as the first cell. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE determines that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0293] Correspondingly, in another possible implementation, S302 may be replaced with the UE determining, based on the first indication information, to select or reselect a cell having the same frequency as the first cell when the first condition is not satisfied and the second condition corresponding to the second information is satisfied, or determining, based on the first indication information, not to select or reselect a cell having the same frequency as the first cell. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related condition is not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0294] Correspondingly, in another possible embodiment, S302 may be replaced with the UE determining, based on the second indication information, to select or reselect a cell having the same frequency as the first cell, or determining, based on the second indication information, not to select or reselect a cell having the same frequency as the first cell, when the first condition is not satisfied and the second condition corresponding to the second information is satisfied. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0295] Correspondingly, in another possible embodiment, S302 may be replaced with the UE determining, based on the first indication information and the second indication information, to select or reselect a cell having the same frequency as the first cell, or determining not to select or reselect a cell having the same frequency as the first cell, when the first condition is not satisfied and the second condition corresponding to the second information is satisfied. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-band cell when the second condition is not satisfied.

[0296] Optionally, the first cell operates in an unlicensed spectrum and / or a licensed spectrum.

[0297] The third condition includes any one or more of the first cell operating in the unlicensed spectrum and the UE operating in the unlicensed spectrum in the unlicensed spectrum. Alternatively, the third condition includes any one or more of the first cell operating in the licensed spectrum and the UE operating in the licensed spectrum in the licensed spectrum.

[0298] Correspondingly, in one possible embodiment, S302 may be replaced with the UE selecting or reselecting a cell having the same frequency as the first cell when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information are satisfied. In this way, the probability / degree that the UE misses (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) a cell having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0299] Correspondingly, in another possible embodiment, S302 may be replaced with the UE determining, based on the first indication information, to select or reselect a cell having the same frequency as the first cell when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information are satisfied, or determining, based on the first indication information, not to select or reselect a cell having the same frequency as the first cell. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0300] Correspondingly, in another possible embodiment, S302 may be replaced with the UE determining, based on the second indication information, to select or reselect a cell having the same frequency as the first cell, or determining, based on the second indication information, not to select or reselect a cell having the same frequency as the first cell, when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information are satisfied. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0301] Correspondingly, in another possible embodiment, S302 may be replaced with the UE determining to select or reselect a cell having the same frequency as the first cell, or determining not to select or reselect a cell having the same frequency as the first cell, based on the first indication information and the second indication information, when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information are satisfied. In this way, the probability / degree that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) having the same frequency (e.g., the same frequency as the first cell) is avoided / reduced, thereby improving the cell access performance of the UE. For example, the cell selection / reselection process can be accelerated. For example, the initial access process can be accelerated. For example, the power consumption of the UE can be reduced. For example, before selecting or reselecting a cell having the same frequency as the first cell, the UE may determine that the second condition can be satisfied (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related conditions are not satisfied), thereby avoiding a meaningless attempt to access an in-frequency cell when the second condition is not satisfied.

[0302] Note that here, the sequences of S301, S303, S304, S305, and S306 do not exist. This is not limited in this application.

[0303] In some embodiments, FIG. 4 is a schematic flowchart of yet another cell selection or reselection method according to an embodiment of the present application. As shown in FIG. 4, the cell selection or reselection method provided in this embodiment of the present application may further include the following steps.

[0304] S401: When the first condition is not satisfied, or because the first condition is not satisfied, the UE determines that N cells, at least N cells, at most N cells, or the Nth cell on the first frequency cannot be accessed, where N is a positive integer greater than or equal to 1.

[0305] It should be understood that a cell not being accessible means that the cell is prohibited, considered prohibited, or cannot be camped on.

[0306] For example, the N cells can be the N cells with the strongest signal strength at the first frequency.

[0307] For example, the Nth cell can be understood as the cell ranked Nth at the first frequency, or the cell ranked highly Nth at the first frequency.

[0308] For example, the Nth cell may be the first cell.

[0309] The N cells may be configured by the base station, pre-configured, specified by the protocol, or determined by the UE. This is not specifically limited in this specification.

[0310] "The UE determines that N cells, at least N cells, or at most N cells on the first frequency cannot be accessed" or "When the first condition is not met, or because the first condition is not met, the UE determines that N cells, at least N cells, or at most N cells on the first frequency cannot be accessed" means that each of the N cells, at least N cells, or at most N cells is prohibited or considered prohibited because the first condition is not met; or, because the first condition is not met, some of the N cells, at least N cells, or at most N cells (for example, the highest-ranked cells are prohibited) are prohibited or considered prohibited, may be included / understood as

[0311] Optionally, when the first condition is not met, or because the first condition is not met, the UE determines that N cells, at least N cells, or at most N cells on the first frequency cannot be accessed, which may include that when the third condition is met, because the first condition is not met, the UE determines that N cells, at least N cells, at most N cells, or the Nth cell on the first frequency cannot be accessed.

[0312] S402: The UE determines / considers the first frequency as a frequency with low priority or the lowest priority, and the UE does not select or reselect cells with the same frequency as the first cell, or the UE does not select or reselect cells on the first frequency.

[0313] Regarding the related description of "The UE does not select or reselect cells on the first frequency", it is referred to "The UE does not select or reselect cells with the same frequency as the first cell", and "cells with the same frequency as the first cell" is replaced by "cells on the first frequency". Details are not described again here.

[0314] Optionally, S402 may specifically include any one or more of the following: the UE determines / considers the first frequency as the lowest-priority or lowest-priority (frequency) within the fourth duration; the UE determines / considers the first frequency as the lowest-priority or lowest-priority (frequency) within the maximum value of the fourth duration; the UE does not select or reselect a cell with the same frequency as the first cell within the fourth duration; or the UE does not select or reselect a cell with the same frequency as the first cell within at most the fourth duration.

[0315] The fourth duration may be configured by the network device, pre-configured, defined by a protocol, or set by the UE before distribution. This is not limited in this application. For example, the fourth duration may be 300 seconds.

[0316] For example, after the UE determines that N cells, at least N cells, or at most N cells of the first frequency cannot be accessed, the UE may consider the first frequency as the lowest-priority frequency within 300 seconds, or the UE does not select or reselect a cell of the first frequency within 300 seconds.

[0317] For example, since the highest-ranked cell or the best cell does not meet the first condition, it cannot camp on / intrude into the candidate cell for reselection, or instead of the candidate cell, the UE considers the second-ranked cell with the same frequency for cell reselection. However, since the first condition is not met, the second-ranked cell in terms of frequency is also not suitable for access. In this case, the UE may consider this frequency as the lowest-priority frequency within at most 300 seconds, or the UE may exclude a cell having the same frequency as the first cell (or the prohibited cell) as a candidate cell for cell selection / reselection within 300 seconds.

[0318] In this embodiment of the present application, since the number of cells that the UE attempts to access is limited, the UE can be prevented from constantly attempting access at the first frequency, thereby improving the cell access efficiency and performance of the UE.

[0319] It should be noted that S401 and S402 may be used as separate embodiments, may not depend on S301 to S306, or may be combined with any one or more of S301 to S306. It should be noted that the embodiments shown in FIGS. 3A and 3B may be used as separate embodiments or may be used as the entire embodiment.

[0320] All solutions in the embodiments of the present application may be combined on the premise that there is no contradiction.

[0321] FIG. 5 is a schematic diagram of the structure of still another terminal device 500 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes a first acquisition unit 501 configured to acquire first information corresponding to a first cell, where the first information is not specific to a frequency band or a frequency, the first acquisition unit 501, and a processing unit 502 configured to select or reselect a cell having the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, where the first condition is used to determine whether the terminal device can access the first cell, the processing unit 502 and may include.

[0322] In some embodiments, the first information indicates any one or more of information related to the initial downlink BWP, information related to the initial uplink BWP, and the carrier bandwidth.

[0323] In some embodiments, the first condition is The channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial downlink BWP and less than or equal to the carrier bandwidth, and the channel bandwidth supported by the terminal device is greater than or equal to the bandwidth of the initial uplink BWP and less than or equal to the carrier bandwidth, includes any one or more of the above.

[0324] In some embodiments, the terminal device 500 further includes a second acquisition unit 503 configured to acquire first indication information and / or second indication information wherein the first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell; the second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, or indicates that first information corresponding to a cell having the same frequency as the first cell is different from first information corresponding to the first cell.

[0325] The processing unit 502 is further configured to determine whether to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

[0326] In some embodiments, the first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell; The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell.

[0327] When the first condition is not satisfied, the processing unit 502 is configured to determine not to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

[0328] In some embodiments, the terminal device 500 is a third acquisition unit 504 configured to acquire second information corresponding to the first cell, where the second information is not specific to a frequency band or frequency, the third acquisition unit 504 further includes the fact that the first condition corresponding to the first information is not satisfied means the first condition is not satisfied, the second condition corresponding to the second information is satisfied, and the second condition is used to determine whether the terminal device can access the first cell including.

[0329] In some embodiments, the second condition is the terminal device supports the frequency band corresponding to the first cell, the terminal device supports the transmission requirements of the frequency band corresponding to the first cell, and the network device indicates disabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, or the network device indicates enabling NR uplink transmission with a 7.5k frequency shift to the LTE raster, and the terminal device supports a 7.5kHz frequency shift, including any one or more of.

[0330] In some embodiments, the terminal device 500 is a determination unit 505 configured to determine that when a first condition is not satisfied, N cells, at least N cells, at most N cells, or the Nth cell of the frequency of the first cell cannot be accessed, where N is a positive integer greater than or equal to 1 and further includes.

[0331] The processing unit 502 is configured to determine that the frequency of the first cell has the lowest priority and / or not select or reselect cells having the same frequency as the first cell.

[0332] In some embodiments, the processing unit 502 is configured to permit selection or reselection of cells at the same frequency as the first cell.

[0333] In some embodiments, the processing unit 502 is configured not to permit selection or reselection of cells at the same frequency as the first cell.

[0334] In some embodiments, the first cell operates in an unlicensed spectrum and / or a licensed spectrum.

[0335] Optionally, the terminal device 500 may be implemented using code or using circuitry. Specifically, the communication device may be a complete terminal device. For example, each of the first acquisition unit 501, the second acquisition unit 503, and the third acquisition unit 504 may be a receiving circuit or may be implemented using an antenna (e.g., the transceiver 303 shown in FIG. 2). The determination unit 505 may be a processor (e.g., the processor 301 shown in FIG. 2).

[0336] One embodiment of the present application provides a network device. The network device transmits first indication information and / or second indication information to a terminal device; when a first condition corresponding to the first information is not satisfied, it is configured to indicate to the terminal device to determine to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information. The first information is not specific to a frequency band or a frequency, and the first condition is used to determine whether the terminal device can access the first cell.

[0337] The first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell.

[0338] The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell.

[0339] In some embodiments, the first indication information indicates that when the first cell is prohibited or considered prohibited by the terminal device, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell. The second indication information indicates that when the first cell is prohibited because the first condition is not satisfied, the terminal device is not permitted to select or reselect a cell having the same frequency as the first cell, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell.

[0340] When the first condition corresponding to the first information is not satisfied, the network device is further configured to indicate to the terminal device that it determines not to select or reselect a cell having the same frequency as the first cell based on the first instruction information and / or the second instruction information.

[0341] Optionally, in this application, the terminal device or the network device may be divided into functional units based on the foregoing method examples. For example, each functional unit may be obtained by division based on each corresponding function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division into units in this application is only an example and is only a logical function division, and other divisions may be used in actual embodiments.

[0342] When the integrated unit is used, FIG. 6 is a possible schematic diagram of the structure of the terminal device or the network device (referred to as communication device 600) in the foregoing embodiment. The communication device 600 includes a processing unit 601 and a communication unit 602, and may further include a storage unit 603. The schematic diagram of the structure shown in FIG. 6 may be used to show the structure of the network device or the terminal device in the foregoing embodiment.

[0343] When the schematic diagram of the structure shown in FIG. 6 is used to show the structure of the terminal device in the foregoing embodiment, the processing unit 601 is configured to control and manage the operation of the terminal device, for example, execute the operations S301, S302, and S306 in FIGS. 3A and 3B, S401 and S402 in FIG. 4, and / or the operations executed by the terminal device in another process described in this application to control the terminal device. The processing unit 601 may communicate with another network entity via the communication unit 602, for example, communicate with the network device shown in FIG. 1. The storage unit 603 is configured to store the program code and data of the terminal device.

[0344] When the schematic diagram of the structure shown in FIG. 6 is used to show the structure of the terminal device in the foregoing embodiment, the communication device 600 may be a terminal device or a chip within the terminal device.

[0345] When the schematic diagram of the structure shown in FIG. 6 is used to show the structure of the network device in the foregoing embodiment, the processing unit 601 is configured to control and manage the operation of the network device. For example, the processing unit 601 controls the network device to execute S303, S304, and S305 in FIGS. 3A and 3B, and / or controls the operations performed by the network device in another process described in the embodiments of the present application. The processing unit 601 can communicate with another network entity via the communication unit 602. For example, the processing unit 601 can communicate with the terminal device shown in FIG. 1. The storage unit 603 is configured to store the program code and data of the network device.

[0346] When the schematic diagram of the structure shown in FIG. 6 is used to show the structure of the network device in the foregoing embodiment, the communication device 600 may be a network device or a chip within the network device.

[0347] When the communication device 600 is a network device or a terminal device, the processing unit 601 may be a processor or a controller, and the communication unit 602 may be a communication interface, a transceiver, a transceiver circuit, a transceiver device, etc. The communication interface is a general term and may include one or more interfaces. The storage unit 603 may be a memory. When the communication device 600 is a chip in a terminal device or a network device, the processing unit 601 may be a processor or a controller, and the communication unit 602 may be an input interface and / or an output interface, a pin, or a circuit, etc. The storage unit 603 may be a storage unit in the chip (e.g., a register or a cache), or a storage unit in a terminal device or a network device arranged outside the chip (e.g., a read-only memory (ROM) or a random access memory (RAM)).

[0348] The communication unit may also be referred to as a transceiver unit. An antenna and a control circuit having a transmission and reception function in the communication device 600 may be regarded as the communication unit 602 in the communication device 600, and a processor having a processing function may be regarded as the processing unit 601 in the communication device 600. Optionally, a component configured to implement a reception function in the communication unit 602 may be regarded as a reception unit. The reception unit is configured to execute the reception step in the present application. The reception unit may be a reception machine, a receiver, a reception circuit, etc.

[0349] In the implementation process, the steps of the method provided in the embodiment may be performed using the hardware integrated logic circuit in the processor or using instructions in the form of software. The steps of the method disclosed with reference to this application may be directly implemented by a hardware processor or may be implemented by a combination of hardware and software modules in the processor.

[0350] The processor in this application may include at least one of the following types, namely, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or a computing device used to execute software such as an artificial intelligence processor, but is not limited thereto. Each computing device may include one or more cores used to execute software instructions to perform operations or processing. The processor may be an independent semiconductor chip or may be integrated with another circuit to form a semiconductor chip. For example, the processor may form a system-on-chip (SoC) with another circuit (such as a codec circuit, a hardware acceleration circuit, or various bus and interface circuits). Alternatively, the processor may be integrated into an ASIC as an embedded processor of the ASIC, and the ASIC integrated with the processor may be packaged separately or packaged with another circuit. In addition to the cores configured to execute software instructions to perform operations or processing, the processor may further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a programmable logic device (PLD), or a logic circuit that performs dedicated logic operations.

[0351] The memory in the present application may include at least one of the following types, namely, read-only memory (ROM) or another type of static memory device capable of storing static information and instructions, random access memory (RAM) or another type of dynamic memory device capable of storing information and instructions, or electrically erasable programmable-only memory (EEPROM). In some scenarios, the memory may alternatively be a compact disc read-only memory (CD-ROM) or another compact disc storage, optical disc storage (including compact optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or another magnetic storage device, or any other medium that can be used to hold or store program code expected in the form of instructions or data structures and can be accessed by a computer. However, the memory is not limited thereto.

[0352] The present application further provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are executed on a computer, the computer is enabled to execute the method in any one of the foregoing embodiments.

[0353] The present application further provides a computer program product. When the computer program product operates on a computer, the computer is enabled to execute the method in any one of the foregoing embodiments.

[0354] This application further provides a communication device. The device may exist in the form of a chip product. The structure of the device includes a processor and an interface circuit. Since the processor is configured to communicate with another device using the receiving circuit, the device executes the method in any one of the foregoing embodiments.

[0355] This application further provides a communication system including a network device and the foregoing terminal device.

[0356] This application further provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor. The processor is configured to execute a computer program or instructions to implement the foregoing method. The interface circuit is configured to communicate with another module other than the chip.

[0357] The foregoing description of the embodiments enables those skilled in the art to understand that the division of the foregoing functional modules into examples is used for the sake of a simple explanation. In actual applications, the foregoing functions may be assigned to different modules and implemented based on requirements. In other words, the internal structure of the device is divided into different functional modules to implement all or part of the functions described above.

[0358] It should be understood that in some embodiments provided by this application, the disclosed devices and methods may be implemented in other ways. For example, the described embodiments of the device are merely examples. For example, the division into modules or units is only a logical function division, and in actual implementation, other divisions may be used. For example, a plurality of units or components may be combined or integrated into another device, or some features may be ignored or not executed. In addition, the mutual coupling, direct coupling, or communication connection shown or described may be implemented through some interfaces. The indirect coupling or communication connection between devices or units may be implemented in electronic form, mechanical form, or other forms.

[0359] The units described as separate parts may or may not be physically separated, and the parts shown as units may be one or more physical units, may be arranged in one place, or may be dispersed in different places. To achieve the purpose of the solution of the embodiment, some or all of the units may be selected based on actual requirements.

[0360] In addition, the functional units of the embodiments of the present application may be integrated into one processing unit, each of the units may exist physically alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0361] When the integrated unit is implemented in the form of a software functional unit and is sold or used as an independent product, the integrated unit may be stored in a readable storage medium. Based on such understanding, essentially the technical solution in the embodiments of the present application, or the part contributing to the prior art, or all or part of the technical solution may also be implemented in the form of a software product. The software product is stored in a storage medium and includes several instructions for instructing a device (which may be a single-chip microcomputer or a chip, etc.) or a processor to execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0362] This application is described with reference to its specific features and embodiments, but it is obvious that various modifications and combinations can be made to them without departing from the scope of this application. Correspondingly, this specification and the accompanying drawings are only exemplary descriptions of this application defined by the appended claims, and are regarded as any or all modification examples, variation examples, combination examples, or equivalent examples that fall within the scope of this application. It is obvious that those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. In this way, this application intends to cover these modifications and variations provided that these modifications and variations of this application fall within the scope of protection defined by the following claims and their equivalent technologies.

[0363] The foregoing description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Modifications or substitutions within the technical scope disclosed in this application shall be deemed to fall within the scope of protection of this application. Therefore, the scope of protection of this application shall follow the scope of protection of the claims.

Description of Reference Signs

[0364] 100 Mobile communication system 110 Network device 120 Network device 130 Terminal device 140 Terminal device 150 Terminal device 200 Network device 201 Processor 202 Memory 203 Transceiver 204 Network interface 300 Terminal device 301 Processor 302 Memory 303 Transceiver 304 Output device 305 Input device 500 Terminal device 501 First acquisition unit 502 Processing unit 503 Second acquisition unit 504 Third acquisition unit 505 Decision unit 600 Communication device 601 Processing unit 602 Communication unit 603 Memory unit

Claims

1. 1. A cell selection or reselection method, the method comprising: obtaining, by a terminal device, first information corresponding to a first cell, the first information being non-frequency band or frequency specific; selecting or reselecting, by the terminal device, a cell having the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, the first condition being used to determine whether the terminal device can access the first cell; A cell selection or reselection method comprising:

2. The first information indicates any one or more of information about an initial downlink BWP, information about an initial uplink BWP, and a carrier bandwidth; The method of claim 1.

3. The first condition is The channel bandwidth supported by the terminal device is equal to or greater than the bandwidth of the initial downlink BWP and equal to or less than the carrier bandwidth; and The channel bandwidth supported by the terminal device is equal to or greater than the bandwidth of the initial uplink BWP and equal to or less than the carrier bandwidth.

3. The method of claim 1 or 2, comprising any one or more of:

4. The method further comprising: obtaining, by the terminal device, the first indication information and / or the second indication information; Further comprising: The first indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell; The step of selecting or reselecting, by the terminal device, a cell having the same frequency as the first cell, further comprises: determining, by the terminal device, to select or reselect the cell having the same frequency as the first cell based on the first indication information and / or the second indication information; Including, 4. The method according to any one of claims 1 to 3.

5. The first indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the terminal device; The second indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell; The method comprises: When the first condition is not satisfied, determining by the terminal device not to select or not to reselect the cell having the same frequency as the first cell based on the first indication information and / or the second indication information. Further comprising: The method of claim 4.

6. The terminal device obtains second information corresponding to the first cell, the second information being specific to a frequency band or frequency; The fact that a first condition corresponding to the first information is not satisfied the first condition is not satisfied and a second condition corresponding to the second information is satisfied, and the second condition is used to determine whether the terminal device can access the first cell. Further comprising:

6. The method according to any one of claims 1 to 5.

7. The second condition is The terminal device supports a frequency band corresponding to the first cell; the terminal device supporting a transmission request for the frequency band corresponding to the first cell; and The network device indicates that NR uplink transmission with 7.5 kHz frequency shift to the LTE raster is disabled, or the network device indicates that NR uplink transmission with 7.5 kHz frequency shift to the LTE raster is enabled, and the terminal device supports the 7.5 kHz frequency shift.

7. The method of claim 6, comprising any one or more of:

8. determining that N cells, at least N cells, at most N cells, or an Nth cell of the frequency of the first cell cannot be accessed by the terminal device when the first condition is not met, where N is a positive integer equal to or greater than 1; determining, by the terminal device, that the frequency of the first cell has the lowest priority; and / or skipping, by the terminal device, the step of selecting or reselecting the cell having the same frequency as the first cell.

8. The method of claim 1, further comprising:

9. The step of selecting or reselecting, by the terminal device, a cell having the same frequency as the first cell, allowing the terminal device to select or reselect the cell on the same frequency as the first cell.

9. The method of any one of claims 1 to 8, comprising:

10. The step of skipping a step of selecting or reselecting, by the terminal device, the cell having the same frequency as the first cell, not allowing the terminal device to select or reselect the cell on the same frequency as the first cell; 10. The method of any one of claims 1 to 9, comprising:

11. The method further comprising: Operating by the first cell in an unlicensed spectrum and / or a licensed spectrum.

11. The method of any one of claims 1 to 10, further comprising:

12. 1. A cell selection or reselection method, the method comprising: sending, by the network device, first indication information and / or second indication information to the terminal device when a first condition corresponding to the first information is not satisfied, to indicate that the terminal device decides to select or reselect a cell of the same frequency as the first cell based on the first indication information and / or the second indication information, wherein the first information is not specific to a frequency band or frequency, and the first condition is used to determine whether the terminal device can access the first cell; Including, The first indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not met, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell. Cell selection or reselection method.

13. The first indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the terminal device; The second indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell; The network device is further configured to indicate to the terminal device, when the first condition corresponding to the first information is not satisfied, to determine not to select or reselect the cell having the same frequency as the first cell based on the first indication information and / or the second indication information. The method of claim 12.

14. A terminal device, the terminal device comprising: a first acquisition unit configured to acquire first information corresponding to a first cell, the first information being non-frequency band or frequency specific; a processing unit configured to select or reselect a cell having the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, the first condition being used to determine whether the terminal device can access the first cell; A terminal device comprising:

15. The first information indicates any one or more of information about an initial downlink BWP, information about an initial uplink BWP, and a carrier bandwidth; A terminal device as claimed in claim 14.

16. The first condition is The channel bandwidth supported by the terminal device is equal to or greater than the bandwidth of the initial downlink BWP and equal to or less than the carrier bandwidth; and The channel bandwidth supported by the terminal device is equal to or greater than the bandwidth of the initial uplink BWP and equal to or less than the carrier bandwidth.

16. A terminal device according to claim 14 or 15, comprising any one or more of the following:

17. The terminal device, a second obtaining unit configured to obtain the first indication information and / or the second indication information; Further equipped with The first indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell; The processing unit is further configured to determine, based on the first indication information and / or the second indication information, to select or reselect the cell having the same frequency as the first cell. A terminal device according to any one of claims 14 to 16.

18. The first indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the terminal device; The second indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell; The processing unit is configured to determine, when the first condition is not satisfied, not to select or not to reselect the cell having the same frequency as the first cell based on the first indication information and / or the second indication information. A terminal device as claimed in claim 17.

19. The terminal device, a third acquiring unit configured to acquire second information corresponding to the first cell, the second information being frequency band or frequency specific; Further equipped with The fact that a first condition corresponding to the first information is not satisfied the first condition is not satisfied and a second condition corresponding to the second information is satisfied, and the second condition is used to determine whether the terminal device can access the first cell. Further comprising: A terminal device according to any one of claims 14 to 18.

20. The second condition is The terminal device supports a frequency band corresponding to the first cell; the terminal device supporting a transmission request for the frequency band corresponding to the first cell; and A network device indicates that NR uplink transmission with a 7.5 kHz frequency shift to an LTE raster is disabled, or a network device indicates that NR uplink transmission with a 7.5 kHz frequency shift to an LTE raster is enabled, and the terminal device supports the 7.5 kHz frequency shift.

20. The terminal device of claim 19, comprising any one or more of:

21. The terminal device, a determining unit configured to determine that N cells, at least N cells, at most N cells, or an Nth cell of the frequency of the first cell cannot be accessed when the first condition is not met, where N is a positive integer greater than or equal to 1; Further equipped with the processing unit is configured to determine that the frequency of the first cell has the lowest priority and / or not to select or reselect the cell with the same frequency as the first cell. A terminal device according to any one of claims 14 to 20.

22. 22. A terminal device according to any one of claims 14 to 21, wherein the processing unit is configured to allow selection or reselection of the cell on the same frequency as the first cell.

23. 23. A terminal device according to any one of claims 14 to 22, wherein the processing unit is configured to not allow selection or reselection of the cell on the same frequency as the first cell.

24. the first cell operates in an unlicensed spectrum and / or a licensed spectrum; A terminal device according to any one of claims 14 to 23.

25. 1. A network device, comprising: When a first condition corresponding to the first information is not satisfied, the network device transmits first indication information and / or second indication information to the terminal device, and the terminal device indicates that it decides to select or reselect a cell having the same frequency as the first cell based on the first indication information and / or the second indication information, the first information is not specific to a frequency band or frequency, and the first condition is used to determine whether the terminal device can access the first cell; The first indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second indication information indicates that the terminal device is permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not met, or indicates that the first information corresponding to the cell having the same frequency as the first cell is different from the first information corresponding to the first cell. Network devices.

26. The first indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the terminal device; The second indication information indicates that the terminal device is not permitted to select or reselect the cell having the same frequency as the first cell when the first cell is prohibited because the first condition is not satisfied, or indicates that the first information corresponding to the cell having the same frequency as the first cell is the same as the first information corresponding to the first cell; The network device is further configured to indicate to the terminal device, when the first condition corresponding to the first information is not satisfied, to determine not to select or reselect the cell having the same frequency as the first cell based on the first indication information and / or the second indication information.

26. The network device of claim 25.

27. 14. A computer-readable storage medium comprising computer instructions that, when executed on an electronic device, cause the electronic device to perform a cell selection or reselection method according to any one of claims 1 to 11 or any one of claims 12 and 13.

28. 14. A computer program which, when called by a processor, causes a cell selection or reselection method as claimed in any one of claims 1 to 11 to be performed, or causes a cell selection or reselection method as claimed in any one of claims 12 and 13 to be performed.

29. A chip system comprising one or more processors, the one or more processors executing instructions causing the one or more processors to perform a cell selection or reselection method according to any one of claims 1 to 11 or any one of claims 12 and 13.

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