CELL SELECTION OR RESELECTION METHOD, TERMINAL DEVICE, AND NETWORK DEVICE - Patent application

Abstract

The present application discloses a cell selection or reselection method, a terminal device, and a network device. The method includes a step in which a terminal device obtains first information corresponding to a first cell and not specific to a frequency band or frequency. When a first condition corresponding to the first information and 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 of the same frequency as the first cell. This avoids / reduces (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) of the same frequency (e.g., 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.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE Embodiments of the present invention relate to the field of communication technologies, and in particular to a cell selection or reselection method, a terminal device, and a network device. [Background technology]

[0002] In NR, after acquiring the MIB (master information block) and SIB1 (SIB (system information block)) for the cell on which the terminal device intends to camp, the terminal device may 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 intra-frequency cell. Thus, the cell access performance of the terminal device is affected. Summary of the Invention [Means for solving the problem]

[0003] The 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 of the same frequency as a first cell, thereby improving the cell access performance of the terminal device.

[0004] In order to achieve the aforementioned objectives, the following technical solutions are used in the embodiments of this application.

[0005] According to a first aspect, an embodiment of the present application provides a cell selection or reselection method. The method may be executed by a terminal device or may be executed by a component (e.g., a chip, a chip system, or a processor) in the terminal device. An example in which the method is executed by the 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, the first information being not specific to a frequency band or frequency. The terminal device selects or reselects a cell of the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, 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 allowed to select or reselect a cell of the same frequency as the first cell. This avoids / reduces (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) of the same frequency (e.g., 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.

[0007] In one possible implementation, 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. When a 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, specifically, when a 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: a 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 a 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.

[0009] 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 first indication information and / or second indication information. 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 deemed 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 met, 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. The terminal device selecting or reselecting the cell with the same frequency as the first cell specifically refers to the terminal device determining to select or reselect a cell with 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 at the same frequency as the first cell is permitted based on the indication content of the first indication information and / or the indication content of the second indication information. In this way, the terminal device may still select or reselect a cell at 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 the terminal device is not allowed to select or reselect a cell with the same frequency as the first cell when the first cell is prohibited or deemed prohibited by the terminal device. The second indication information indicates that the terminal device is not allowed 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 met, or indicates that the first information corresponding to the cell with 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 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 and / or the second indication information when the first condition is not met.

[0012] In this embodiment of the present application, when the first condition corresponding to the first information is not met, the terminal device determines that the selection or reselection of a cell with the same frequency as the first cell is not allowed 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 meets the first condition. In this way, the terminal device cannot select or reselect a cell with 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 of the terminal device obtaining second information corresponding to the first cell, the second information being specific to a frequency band or frequency. The first condition corresponding to the first information not being met specifically means that the first condition is not met and a second condition corresponding to the second information is met, and the second condition is used to determine whether the terminal device can access the first cell.

[0014] In one possible implementation, the terminal device obtains second information corresponding to the first cell, and the second information is specific to a frequency band or frequency. The terminal device is permitted to select or reselect a cell of the same frequency as the first cell when a first condition corresponding to the first information is not satisfied, specifically, the terminal device is permitted to select or reselect a cell of the same frequency as the first cell when the first condition is not satisfied and a 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.

[0015] In this embodiment of the present application, since the second information is limited to a frequency band or frequency, the second condition corresponding to the second information is also limited to a frequency band or frequency. When the first condition is not satisfied and the second condition corresponding to the second information is satisfied, it may be determined that the terminal device satisfies the second condition, in other words, the terminal device cannot camp on the cell because the frequency band or frequency-related condition is not satisfied. Thus, the terminal device is allowed to select or reselect a cell of the same frequency as the first cell. This can prevent the terminal device from missing a cell of 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 met and the second information corresponding to the second information is met, the terminal device determines that the selection or reselection of a cell with the same frequency as the first cell is permitted based on the indication content of the first indication information and / or the indication content of the second indication information. In this way, the terminal device is permitted to select or reselect a cell with the same frequency as the first cell.

[0017] In one possible implementation, the second condition includes one or more of: the terminal device supports a frequency band corresponding to the first cell; the terminal device supports a transmission request for the frequency band corresponding to the first cell; and the network device indicates that it disables NR uplink transmission with 7.5k frequency shift to the LTE raster, or the network device indicates that it enables NR uplink transmission with 7.5k frequency shift to the LTE raster and the terminal device supports the 7.5kHz frequency shift.

[0018] In one possible implementation, the cell selection or reselection method provided in this embodiment of the present application further includes the step of: when the first condition is not met, 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 equal to or greater than 1. The terminal device determines that the frequency of the first cell has the lowest priority, and / or the terminal device skips the selection or skips the reselection of a cell on the same frequency as the first cell.

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

[0020] In one possible implementation, 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 skips the selection or skips the reselection of a cell of the same frequency as the first cell, specifically, the terminal device is not allowed to select or reselect a cell of the same frequency as the first cell.

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

[0023] According to a second aspect, an embodiment of the present application provides a cell selection or reselection method. The method may be executed by a network device, or may be executed by a component (e.g., a chip, a chip system, or a processor) in the network device. An example in which the method is executed by the network device is used in the following description. The method includes a step in which the network device transmits first indication information and / or second indication information to a terminal device to indicate to the terminal device, based on the first indication information and / or the second indication information, to determine to select or reselect a cell of the same frequency as the first cell when a first condition corresponding to the first information is not satisfied. 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 allowed to select or reselect a cell of the same frequency as the first cell when the first cell is prohibited or deemed prohibited by the terminal device. The second indication information indicates that 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 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.

[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 indication content of the first indication information and / or the indication content of the second indication information. In this way, the terminal device may still select or reselect a cell at 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 indication information indicates that the terminal device is not allowed to select or reselect a cell with 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 allowed to select or reselect a cell with the same frequency as the first cell when the first cell is forbidden because the first condition is not met, or indicates that the first information corresponding to the cell with 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 decide not to select or reselect a cell with 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 met.

[0026] In this embodiment of the present application, when the first condition corresponding to the first information is not met, the terminal device determines that the selection or reselection of a cell with the same frequency as the first cell is not allowed 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 meets the first condition. In this way, the terminal device cannot select or reselect a cell with 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 including: a first acquisition unit configured to acquire first information corresponding to a first cell, the first information being not specific to a frequency band or frequency, and a processing unit configured to select or reselect a cell of 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.

[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 allowed to select or reselect a cell of the same frequency as the first cell. This avoids / reduces (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) of the same frequency (e.g., 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.

[0029] In one possible implementation, 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.

[0030] In one possible embodiment, the first condition includes any one or more of: a 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 a 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.

[0031] In one possible implementation, the terminal device further includes a second obtaining unit configured to obtain the first indication information and / or the second indication information. 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 deemed 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 met, 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. The processing unit is further configured to determine to select or reselect a cell with 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 the terminal device is not allowed to select or reselect a cell with 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 allowed to select or reselect a cell with the same frequency as the first cell when the first cell is forbidden because the first condition is not met, or indicates that the first information corresponding to the cell with 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 with 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 met.

[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 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.

[0034] In this embodiment of the present application, 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) of 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. For example, before selecting or reselecting a cell of the same frequency as the first cell, the terminal device determines that the second condition can be met (e.g., this indicates that the terminal device cannot camp on the cell because the frequency band or frequency related condition is not met). In addition, meaningless attempts to access intra-frequency cells when the second condition is not met are avoided.

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

[0036] In one possible implementation, the terminal device further includes a determining unit configured to determine 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 when the first condition is not met, where N is a positive integer equal to or greater than 1. 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 a cell of the same frequency as the first cell.

[0037] In one possible implementation, the processing unit is configured to allow selection or reselection of a cell on the same frequency as the first cell.

[0038] In one possible implementation, the processing unit is configured to not allow selection or reselection of a cell on the same frequency as the first cell.

[0039] In one possible implementation, 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 is configured to transmit first indication information and / or second indication information to a terminal device; when a first condition corresponding to the first information is not met, indicate to the terminal device to decide 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 a cell having the same frequency as the first cell when the first cell is prohibited or deemed prohibited by the terminal device. The second indication information indicates that 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 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.

[0041] In one possible embodiment, the first indication information indicates that the terminal device is not allowed to select or reselect a cell with 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 allowed to select or reselect a cell with the same frequency as the first cell when the first cell is forbidden because the first condition is not met, or indicates that the first information corresponding to the cell with 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 decide not to select or reselect a cell with 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 met.

[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 according to any one of the first and second aspects and possible implementations of the first and second aspects by using logic circuits 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 configured to perform the method described in a possible implementation of the first aspect and the network device configured to perform the method described in a possible implementation 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 including computer instructions, which, when executed on an electronic device, enable the electronic device to perform the cell selection or reselection method described in any one of the first and second aspects and possible implementations of the first and second aspects.

[0045] According to an eighth aspect, an embodiment of the present application provides a computer program, which when invoked by a processor, performs the cell selection or reselection method as described in any one of the first and second aspects and possible implementations of the first and second aspects.

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

[0047] It should be understood that the description of technical features, technical solutions, beneficial effects, or similar words in this application does not imply that all features and advantages can be implemented in any individual embodiment. Conversely, the description of a feature or beneficial effect will be understood to mean that at least one embodiment includes the particular technical feature, technical solution, or beneficial effect. Thus, the description of a technical feature, technical solution, or beneficial effect in this specification may not necessarily be specific to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in an embodiment 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 particular 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] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the accompanying drawings used to describe the embodiments. 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] 1 is a schematic diagram of the architecture of a mobile communication system to which an embodiment of the present application is applied; [Diagram 2]FIG. 1 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. [Figure 3A] 1 is a schematic flowchart of a cell selection or reselection method according to an embodiment of the present application; [Figure 3B] 1 is a schematic flowchart of a cell selection or reselection method according to an embodiment of the present application; [Figure 4] 4 is a schematic flowchart of yet another cell selection or reselection method according to an embodiment of the present application. [Diagram 5] FIG. 13 is a schematic diagram of the structure of yet another terminal device according to an embodiment of the present application; [Figure 6] 1 is a schematic diagram of the structure of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0050] In the description of this application, unless otherwise specified, " / " means "or". For example, A / B may indicate A or B. The term "and / or" in this specification only describes the association relationship between associated objects and indicates that there may 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 "multiple" 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 clear differences.

[0051] Terms such as "example" or "for example" are used to represent the following example, illustration, or explanation. An embodiment or design manner described in the embodiments of this application as "example" or "for example" should not be described as having more advantages than another embodiment or design manner. Rather, the use of words such as "example" or "for example" is intended to present a relative concept in a particular way.

[0052] An embodiment of the present application provides a cell selection or reselection method. The method is applied to a mobile communication system. Figure 1 is a schematic diagram of the architecture of a mobile communication system to which an embodiment of the present application is applied. As shown in Figure 1, the mobile communication system 100 includes at least one network device (e.g., network device 110 and network device 120 in Figure 1) and at least one terminal device (e.g., terminal device 130, terminal device 140, and terminal device 150 in Figure 1). The terminal device is connected to the network device in a wireless manner. The terminal device may be located at a fixed location or may be mobile. Figure 1 is merely a schematic diagram. The mobile communication system may further include another network device not shown in Figure 1, for example, 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 may be applied to various communication systems, such as long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 5th generation (5G) systems or new radio (NR) systems, and future mobile communication systems.

[0054] The methods provided in the embodiments of the present application are 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, and radio services.

[0055] A terminal device in this application is an entity at a user side configured to receive signals, transmit signals, or receive signals and transmit signals. The terminal device is configured to provide one or more of voice services and data connection services to the user. The terminal device may also be called 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 equipment. The terminal device may be a vehicle to everything (V2X) device, such as a smart car (or intelligent car), a digital car, an unmanned car (or driverless car, or pilotless car, or automobile), a self-driving car (or autonomous car), a pure electric vehicle (or battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a 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, an unmanned aerial vehicle, an internet of things (IoT) device, a station (ST) in 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 with wireless communication capabilities, 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 be referred to as a radio access network (RAN) device, etc. 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 radio 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, for example, LTE, NR, or WCDMA.

[0057] In some arrangements, the gNB may include a central unit CU and a 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 radio resource control (RRC) layer and packet data convergence protocol (PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services, and performs radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer functions. The AAU implements some physical layer processing functions, radio frequency processing, and active antenna related functions. Information at the RRC layer eventually becomes or is converted from information at the PHY layer. Thus, in this architecture, higher layer signaling, such as RRC layer signaling, may also be considered as being transmitted by the DU or by the DU and AAU. It should be understood that the network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in a radio access network (RAN), or the CU may be classified as a network device in a core network (CN). This is not limited in the present application.

[0058] In an embodiment of the present application, a terminal or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running 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 may be one or more types of computer operating systems that implement service processing by processes, such as a Linux 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, word processing software, and instant messaging software. Furthermore, the specific structure of the execution entity 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 a program that records 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 entity 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 that is in a terminal or a network device and can call a program and execute the program.

[0059] Furthermore, aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques. For example, computer-readable media may include, but are not limited to, magnetic storage components (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact discs (CDs) or digital versatile discs (DVDs)), as well as smart cards and flash memory components (e.g., erasable programmable read-only memory (EPROM), cards, sticks, or key drives). In addition, 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, as well as 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 a terminal device wirelessly accesses the mobile communication system 100, and may be a Node B (NodeB), 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 the 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 equipment, outdoor equipment, handheld equipment, or vehicle-mounted equipment, may be deployed on the water surface, or may be deployed on aircraft, balloons, and airborne satellites. In the embodiment of the present application, the application scenario of the network device and the terminal device is not limited.

[0062] The embodiments of the present application may be applicable to downlink signal transmission, and may also be applicable to uplink signal transmission. For downlink signal transmission, the transmitting device is a network device, and the corresponding receiving device is a terminal device. For 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 the licensed spectrum and the 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 the spectrum below 6 GHz and the 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] 2 is a schematic diagram of a 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, a terminal device 300 (such as the terminal device 130, the terminal device 140, and the terminal device 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, memory 302, and 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 solutions of the present application. The processor 301 may alternatively include multiple CPUs, and the processor 301 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may be one or more devices, circuits, or processing cores configured to process data (e.g., computer program instructions).

[0066] The memory 302 may be a Read-Only Memory (ROM) or another type of static storage device capable of storing static information and instructions, or a Random Access Memory (RAM) or another type of dynamic storage device capable of storing information and instructions, or may be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or another type of compact disc storage, an optical disc storage (including a compact disc, a laser disc, an optical disc, a digital versatile disc, or a Blu-ray disc, etc.), a disc storage medium or another disc storage device, or any other medium that can be used to hold or store appropriate program code in the form of instructions or data structures and that can be accessed by a computer. However, the memory 302 is not limited thereto. The memory 302 may exist independently and be connected to the processor 301 via a bus. Alternatively, the memory 302 and the processor 301 may be integrated. The memory 302 is configured to store application program code for executing the solution of the present application, and the processor 301 controls the execution. Cell selection or reselection To carry out the methods, the device is configured to execute computer program code stored in memory 302 .

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

[0068] The output device 304 communicates with the processor 301 and may display information in a number 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 may receive user input in a number 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., the network device 110 and the network device 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, the memory 202, the transceiver 203, and the 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., an S1 interface) or to a network interface (not shown) of another network device via a wired or wireless link (e.g., an X2 interface). This is not specifically limited in this embodiment of the present application. In addition, for related descriptions of the processor 201, the memory 202, and the transceiver 203, please refer to the description of the processor 301, the memory 302, and the transceiver 303 in the terminal device 300. Details will not be described again here.

[0070] It should be noted that although the solutions in the embodiments of the present application are described using terminal devices (e.g., user equipment UE) and network devices as examples, they are not limited to being applicable only to terminal devices and network devices, but may be further applicable to communication apparatuses capable of supporting the functions required to implement the method.

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

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

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

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

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

[0076] SIB1 may contain scheduling information for other system information blocks and information required for initial access. For example, SIB1 may be periodically broadcast on the downlink shared channel (DL-SCH) or transmitted to connected UEs on the DL-SCH in a dedicated signaling manner.

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

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

[0079] 3.BWP The BWP is sometimes called the bandwidth portion.

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

[0081] The above has briefly described some concepts related to embodiments of the present application.

[0082] In the present application, a first condition corresponding to a first piece of information may be understood as a first condition relating to the first piece of information.

[0083] In the present application, a second condition corresponding to the second information may be understood as a second condition relating to the second information.

[0084] In the present application, frequency may be understood / replaced with frequency point.

[0085] In this application, obtaining may be understood / replaced with determining or receiving.

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

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

[0088] In this application, not allowed may be understood / replaced with prohibited, for example, not allowing intra-frequency reselection may be understood as prohibiting intra-frequency reselection.

[0089] In this application, a cell being considered to be barred may be understood / replaced with a cell being determined to be barred or a UE determining that a cell is barred.

[0090] In this application, frequency band may be understood / replaced with band.

[0091] In this application, regarding may be understood / replaced with determining or determining as.

[0092] In the prior art, for a cell, when the camping condition is not met, the UE cannot camp on the cell, and the UE considers the cell to be forbidden, and considers intra-frequency reselection to be forbidden. In conclusion, it can be seen that both camping condition (1) and camping condition (2) are frequency band or frequency specific conditions. If the UE determines that the UE 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 of the same frequency as the cell. Therefore, it is reasonable to forbid intra-frequency reselection, and also avoids the UE's meaningless attempt to an intra-frequency cell. However, camping condition (3) is not a frequency band or frequency specific condition. If the UE determines that the UE cannot camp on the cell because camping condition (3) is not met, it does not mean that the UE cannot camp on other cells on the frequency point. Therefore, it is not reasonable to directly forbid intra-frequency reselection. Therefore, the UE may miss the cell with the same frequency as the cell, which affects the cell access performance of the UE. For example, the channel bandwidth supported by the UE is assumed to be 100MHz, 80MHz, 40MHz, or 20MHz. The information on the carrier bandwidth and initial BWP (initial downlink BWP is used as an example for illustration) of cell 1 and cell 2 on the same frequency point are different. The details are as follows.

[0093] Cell 1: The carrier bandwidth is 90MHz, and the bandwidth of the initial downlink BWP is 90MHz. The channel bandwidth of 100M supported by the UE is wider than the carrier bandwidth of the cell, and the channel bandwidths of 80M, 40M, and 20M 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 90MHz, and the bandwidth of the initial downlink BWP is 40MHz. The 80M and 40M channel bandwidths supported by the UE are smaller than the carrier bandwidth of the cell and larger than or equal to the bandwidth of the initial downlink BWP of the cell. Therefore, the UE can camp on this cell.

[0095] Therefore, if camping condition (3) is not met, the UE cannot camp on cell 1. If intra-frequency reselection is directly prohibited, the UE will miss cell 2 of the same frequency (cell 2 can be camped on).

[0096] In order to solve the above-mentioned problem, an embodiment of the present application provides a cell selection or reselection method. The method includes a step in which a user equipment UE obtains first information corresponding to a first cell and not specific to a frequency band or frequency. When the UE corresponds to the first information and does not satisfy a first condition used to determine whether the UE can access the first cell, the UE selects or reselects a cell with the same frequency as the first cell. In this way, the UE may access a cell with 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 methods in the following embodiments may be implemented on devices having the aforementioned hardware structures (eg, terminal device 130, terminal device 140, and terminal device 150 in FIG. 1).

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

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

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

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

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

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

[0104] For example, the first information is not information regarding a frequency band or frequency granularity, which may be understood as meaning that the first information corresponding to different cells on the same frequency band or frequency is not necessarily 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 regarding an initial downlink BWP corresponding to the first cell, information regarding an initial uplink BWP corresponding to the first cell, and a carrier bandwidth corresponding to the first cell.

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

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

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

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

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

[0111] For example, the frequency domain location of the initial uplink BWP may include any one or more of a center frequency point of the initial uplink BWP, a start frequency point of the initial uplink BWP (e.g., a lower / left boundary of the initial uplink BWP), and an end / termination frequency point of the initial uplink BWP (e.g., an 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 a cell bandwidth.

[0113] It should be noted that the information shown in the first information is not limited to being shown 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. The application is not limited to being included in the same information.

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

[0115] In one possible implementation, S302: When a 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.

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

[0117] The first condition being not frequency band or frequency specific may be understood as the first condition being not a frequency band or frequency related condition, or the first condition being not a condition for determining a frequency band or frequency granularity.

[0118] For example, the fact that the first condition is not a condition for determining a frequency band or frequency granularity may be understood to mean that for different cells of the same frequency band or frequency, the determination result of the first condition is not necessarily the same, may not 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 may be understood as / including whether the first cell can be camped on.

[0121] It may be understood that when the first condition corresponding to the first information is not satisfied, the UE cannot access the first cell.

[0122] It will be understood that when a first condition corresponding to the first information is satisfied, the UE may access / has an opportunity to access the first cell.

[0123] For example, the inability of the UE to access the first cell may include / be understood as the UE being unable to camp on the first cell and / or the UE considering the first cell to be forbidden.

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

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

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

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

[0128] A first condition corresponding to the first information not being satisfied may include / be understood to include that the UE / UE information / UE capability / information acquired by the UE (e.g., information / configuration information acquired by the UE from a network device) / configuration information of the network device does not satisfy the first condition corresponding to the first information, or that information configured by the 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] A cell on the same frequency as a first cell may include / be understood to include any one or more of the first cell, another cell on the same frequency as the first cell, another cell on the same frequency as the first cell, all cells on the same frequency as the first cell, and some cells on the same frequency as the first cell.

[0131] The UE selecting or reselecting a cell on the same frequency as the first cell may include / be understood to include any one or more of: the UE being permitted to select or reselect a cell on the same frequency as the first cell; the UE may select or reselect a cell on the same frequency as the first cell if selection or reselection criteria are met; intra-frequency reselection being permitted; or the (UE) being permitted to perform intra-frequency reselection.

[0132] For details on selection and reselection criteria, see 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 UE supports the initial downlink BWP (bandwidth), the UE supports the initial uplink BWP (bandwidth), the UE is capable of operating on the initial downlink BWP, and the UE is capable of operating on the initial uplink BWP.

[0134] "The UE supports (the bandwidth of) the initial downlink BWP or the UE is capable of operating with the initial downlink BWP" includes any one or more of: the channel bandwidth supported by the UE is equal to or greater than the bandwidth of the initial downlink BWP, and / or the channel bandwidth supported by the UE is equal to or less than the carrier bandwidth.

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

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

[0139] For example, the first condition not being met, i.e., "the UE does not support (the bandwidth of) the initial downlink BWP or the UE cannot operate with the initial downlink BWP", may include any one or more of the following: 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 bandwidth of) the initial uplink BWP or the UE is capable of operating with the initial uplink BWP" includes any one or more of: the channel bandwidth supported by the UE is equal to or greater than the bandwidth of the initial uplink BWP, and / or the channel bandwidth supported by the UE is equal to or less than the carrier bandwidth.

[0141] Optionally, the channel bandwidth supported by the UE being greater than or equal to a bandwidth of the initial uplink BWP includes the channel bandwidth supported by the UE including a 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 comprising 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 may be understood as any one or more of: the channel bandwidth supported by the UE includes the bandwidth of the initial uplink BWP; the channel bandwidth supported by the UE can cover the bandwidth of the initial uplink BWP; and the bandwidth of the initial uplink BWP is 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 bandwidth of) the initial uplink BWP or the UE cannot operate with the initial uplink BWP", may include any one or more of the following: the channel bandwidth supported by the UE is smaller than the bandwidth of the initial uplink 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 uplink BWP, and the carrier bandwidth does not include the channel bandwidth supported by the UE.

[0145] For example, in the following, the channel bandwidth and initial downlink BWP supported by the UE 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, where the first boundary is smaller than the second boundary. The boundaries of the initial downlink BWP include a third boundary and a fourth boundary, where the third boundary is smaller than the fourth boundary. Optionally, the first boundary / third boundary may be referred to as a left boundary or a lower boundary. Optionally, the second boundary / fourth boundary may be referred to as a right boundary or an upper boundary.

[0147] A boundary may be understood as a boundary of a frequency range, a frequency boundary, or a starting point of a 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 channel bandwidth supported by the UE including the initial downlink BWP may 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 channel bandwidth supported by the UE being equal to the initial downlink BWP may 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 a crossed relationship or a non-crossed relationship.

[0154] (1) Cross-relationship: There is cross-relationship 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 may be understood as any one of the following:

[0156] (a) the third boundary is greater than the first boundary and less than the second boundary, and the fourth boundary is greater than the second boundary;

[0157] (b) the first boundary is greater than the third boundary and less than the fourth boundary, and the second boundary is greater 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 may 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 a channel bandwidth supported by the UE (eg, a first channel bandwidth supported by the UE).

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

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

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

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

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

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

[0172] For example, the first condition includes: (1) the channel bandwidth supported by the UE is equal to or greater than the bandwidth of the initial uplink BWP, and the channel bandwidth supported by the UE is equal to or less than 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 of the same frequency as the first cell. This avoids / reduces (probability / degree) that the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) of the same frequency (e.g., 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.

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

[0175] S303: The UE obtains first instruction information, and the first instruction information indicates that the UE is permitted or not permitted to select or reselect a cell of the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the UE (or whether intra-frequency reselection is permitted). In response to this, for example, the network device transmits the first instruction information to the UE.

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

[0177] The highest ranked cell may also be understood as the first ranked cell (eg, the highest ranked cell), eg, the cell having the best signal strength.

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

[0179] "When the first cell is barred or deemed to be barred by the UE" may be understood to include / replaced with when the cell or the highest ranked cell or the first cell is barred or barred by the UE.

[0180] For example, the network device may take into account burden and / or interference (eg, co-channel interference) factors when setting the first indication information.

[0181] For example, when the cells of the same frequency as the first cell are heavily loaded and the UE is not expected to access the cells, the network device may set the first indication information corresponding to the first cell to "not allowed". For example, when the cells of the same frequency as the first cell are lightly loaded and the UE may access the cells, the network device may set the first indication information corresponding to the first cell to "allowed".

[0182] For example, the signal of the first cell is strong. If the UE cannot access the first cell, or if 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 indication information corresponding to the first cell to "not allowed".

[0183] "Not allowed" indicates that the UE is not allowed to select or reselect a cell on the same frequency as the first cell when the first cell is barred or is deemed barred by the UE.

[0184] "Allowed" indicates that the UE is permitted to select or reselect a cell on the same frequency as the first cell when the first cell is barred or is deemed barred by the UE.

[0185] For ease of explanation, the first indication information indicates that the UE is not permitted to select or reselect a cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the UE, which may be simplified as the first indication information indicating "not permitted."

[0186] For ease of explanation, the first indication information indicates that the UE is permitted to select or reselect a cell having the same frequency as the first cell when the first cell is forbidden or deemed forbidden by the UE, which may be simplified as the first indication information indicating "permission."

[0187] "Allowed" indicates that the UE is permitted to select or reselect a cell on the same frequency as the first cell when the first cell is barred or is deemed barred by the UE.

[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 a MIB, but is not limited to a MIB, and may be included in SIB1 or another message (e.g., a physical layer message (e.g., DCI), a MAC layer message (e.g., MAC CE), a broadcast message (e.g., system information), or an RRC message (e.g., proprietary information)).

[0190] In practical applications, for example, in another possible embodiment (e.g., a scenario in which the load of a cell of the same frequency as the first cell is taken into consideration), S302 may be specifically implemented by using / selecting to use the first indication information.

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

[0192] Deciding, by the terminal device, to select or reselect a cell having the same frequency as the first cell based on the first indication information includes, when the first indication information indicates "allowed", deciding by the terminal device to select or reselect a cell having the same frequency as the first cell.

[0193] Deciding by the terminal device not to select or reselect a cell having the same frequency as the first cell based on the first indication information includes, when the first indication information indicates "not allowed", deciding by the terminal device not to select or reselect a cell having the same frequency as the first cell.

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

[0195] The terminal device deciding to select or reselect a cell of the same frequency as the first cell may include / be replaced with / be understood to include any one or more of: the terminal device deciding that selection or reselection of a cell at the same frequency as the first cell is permitted; the terminal device being permitted to select or reselect a cell of the same frequency as the first cell; the terminal device selecting or reselecting a cell of the same frequency as the first cell; the terminal device deciding that intra-frequency reselection is permitted or the terminal device deciding that intra-frequency reselection is permitted to occur; intra-frequency reselection is permitted or (the terminal device) is permitted to perform intra-frequency reselection.

[0196] For example, it will be understood that if the terminal device decides to select or reselect a cell with the same frequency as the first cell, the terminal device may select or reselect a cell with the same frequency as the first cell, or the terminal device 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 deciding not to select or reselect a cell of the same frequency as the first cell may include / be replaced with / be understood as any one or more of: the terminal device deciding that selection or reselection of a cell of the same frequency as the first cell is not permitted; the terminal device is not permitted to select or reselect a cell of the same frequency as the first cell; the terminal device not selecting or reselecting a cell of the same frequency as the first cell; the terminal device deciding that intra-frequency reselection is not permitted; the terminal device deciding that intra-frequency reselection is not permitted to be performed; intra-frequency reselection is not permitted or (the terminal device) is not permitted to perform intra-frequency reselection.

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

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

[0200] Optionally, the terminal device not selecting or reselecting a cell with the same frequency as the first cell may include / be replaced with / be understood as: the terminal device may exclude a cell with the same frequency as the first cell (or a prohibited cell) as a candidate cell for cell selection / reselection; the terminal device may exclude a cell with the same frequency as the first cell (or a prohibited cell) as a candidate cell for cell selection / reselection within the second duration; or the terminal device may exclude a cell with the same frequency as the first cell (or a prohibited cell) as a candidate cell for cell selection / reselection within at most the second duration.

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

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

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

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

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

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

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

[0208] For example, when the first condition is not met, the terminal device determines based on the first 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 terminal device may select or reselect a cell with the same frequency as the first cell. In the second case, the terminal device may not select or reselect a cell with the same frequency as the first cell. This is not limited in the present application.

[0209] For example, when the first condition is not met, the terminal device determines, based on the first indication information, that selection or reselection of a cell at the same frequency as the first cell is not allowed, which includes only one case in which 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 content, please refer to the related description of the above embodiment. Details will not be 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 decides to select or reselect a cell with the same frequency as the first cell based on the indication content of the first indication information, or decides not to select or reselect a cell with the same frequency as the first cell based on the indication content of the first indication information. In this way, 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) with 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.

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

[0213] S304: The terminal device obtains second instruction information, and the second instruction information indicates that the terminal device is permitted or not permitted to select or reselect a cell of the same frequency as the first cell when the first cell is prohibited or deemed prohibited because the first condition is not met (or whether intra-frequency reselection is permitted), or indicates that the first information corresponding to the cell of the same frequency as the first cell is different or the same as the first information corresponding to the first cell. In response to this, for example, the network device transmits the second instruction information to the terminal device.

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

[0215] For example, the network device may set the second indication information to "Allowed" or "Not Allowed".

[0216] When the second indication information is set to “Allowed”, it indicates that when the first cell is prohibited or deemed to be prohibited because the first condition is not met, the terminal device is permitted to select or reselect a cell with the same frequency as the first cell.

[0217] When the second indication information is set to “not allowed”, it indicates that when the first cell is prohibited or deemed to be prohibited because the first condition is not met, the terminal device is not allowed to select or reselect a cell with the same frequency as the first cell.

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

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

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

[0221] When the second indication information is set to “different”, it indicates that the first information corresponding to a cell of the same frequency as the first cell is different from the first information corresponding to the first cell.

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

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

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

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

[0226] For ease of explanation, the second indication information indicates that the UE is permitted to select or reselect a cell having the same frequency as the first cell when the first cell is prohibited or deemed prohibited because the first condition is not met, which may be simplified as the second indication information indicating "permission."

[0227] For the sake of simplicity, the second indication information 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, which may be simplified as the second indication information indicating "same".

[0228] For the sake of simplicity, the second indication information 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, which may be simplified as the second indication information indicating "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 (e.g., a physical layer message (e.g., DCI), a MAC layer message (e.g., MAC CE), a broadcast message (e.g., system information), or an RRC message (e.g., proprietary information)).

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

[0231] The first information not being limited to a frequency band or frequency may be understood / replaced with the first information not being information that defines a frequency band or frequency.

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

[0233] Deciding, by the UE, to select or reselect a cell having the same frequency as the first cell based on the second instruction information includes, when the second instruction information indicates “allowed” or “different”, deciding by the UE to select or reselect a cell having the same frequency as the first cell.

[0234] The UE determining, based on the second instruction information, not to select or reselect a cell having the same frequency as the first cell includes, when the second instruction information indicates “not allowed” or “same”, the UE determining not to select or reselect a cell having the same frequency as the first cell.

[0235] For the relevant content of the UE deciding to select or reselect a cell with the same frequency as the first cell, please refer to the relevant description of the above embodiment, and the details will not be described again here.

[0236] For the relevant content of the UE determining not to select or reselect a cell with the same frequency as the first cell, please refer to the relevant description of the above embodiment, and the details will not be described again here.

[0237] The relevant descriptions of the foregoing embodiments are also applicable to this specification, and the details are not described again here.

[0238] For example, when the first condition is not met, 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 the present application.

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

[0240] In this embodiment, the first condition is a condition corresponding to the first information. For specific content, please refer to the related description of the above embodiment. 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 decides to select or reselect a cell with the same frequency as the first cell based on the indication content of the second indication information, or decides not to select or reselect a cell with the same frequency as the first cell based on the indication content of the second indication information. 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) with 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.

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

[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 relevant contents of the first instruction information and the second instruction information, please refer to the above description, and the details will not be described again here.

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

[0246] The UE determining 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 determining 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 includes: when both the first instruction information and the second instruction information indicate "Allowed" and / or "Different", the UE determining to select or reselect a cell having the same frequency as the first cell. When at least one of the first instruction information and the second instruction information indicates "Not Allowed" or "Same", the UE determines not to select or reselect a cell having the same frequency as the first cell.

[0247] Specifically, the following cases are possible:

[0248] In the first case, when the first indication information indicates "Allowed" and the second indication information indicates "Allowed" or "Different", the UE decides to select or reselect a cell with the same frequency as the first cell.

[0249] In the second case, when the first indication information indicates "Allowed" and the second indication information indicates "Not Allowed" or "Same", the UE decides not to select or reselect a cell with the same frequency as the first cell.

[0250] In a third case, when the first instruction information indicates "not allowed" and the second instruction information indicates "allowed" or "different", the UE decides not to select or reselect a cell with the same frequency as the first cell.

[0251] In a fourth case, when the first instruction information indicates "not allowed" and the second instruction information indicates "not allowed" or "same", the UE decides not to select or reselect a cell with the same frequency as the first cell.

[0252] For the contents related to the first indication information and the second indication information, and the related descriptions 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 above description. Details will not be described again here.

[0253] For the relevant content of the UE deciding to select or reselect a cell with the same frequency as the first cell, please refer to the relevant description of the above embodiment, and the details will not be described again here.

[0254] For the relevant content of the UE determining not to select or reselect a cell with the same frequency as the first cell, please refer to the relevant description of the above embodiment, and the details will not be described again here.

[0255] The relevant descriptions of the foregoing embodiments are also applicable to this specification, and the details are not 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 description of the above embodiment. Details will not be described again here.

[0257] For example, when the first condition is not met, the UE determines based on the first indication information and 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 the present application.

[0258] For example, when the first condition is not met, the UE determines, based on the first indication information and the second indication information, that selection or reselection of a cell with the same frequency as the first cell is not allowed, which includes only one case in which the UE cannot select or reselect a cell with 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 decides to select or reselect a cell with 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 decides not to select or reselect a cell with 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 (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) with 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.

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

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

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

[0263] "The second information is frequency band or frequency specific" may be understood as the second information being limited to / is information defining a frequency band or frequency, or the second information is information regarding a frequency band or frequency granularity.

[0264] For example, the second information being limited to / is information defining a frequency band or frequency may be understood as the second information being information related to a frequency band or frequency.

[0265] For example, the second information being information regarding a frequency band or frequency granularity may be understood to mean that the second information of different cells on the same frequency band or frequency is the same or completely the same.

[0266] For example, the second information may indicate any one or more of information regarding a frequency band corresponding to the first cell, information regarding a transmission requirement 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 shown in the second information is not limited to being shown in 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. The application is not limited to being included in the same information.

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

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

[0270] For example, it will be appreciated that the second condition may be frequency band or frequency specific.

[0271] The second condition being frequency band or frequency specific may be understood as the second condition being a frequency band or frequency related condition, or the second condition being a condition for determining a frequency band or frequency granularity.

[0272] For example, the second condition being a condition for determining a frequency band or frequency granularity may be understood to mean that for different cells of 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 may 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 appreciated that when a second condition corresponding to the second information is satisfied, the UE may access / has an opportunity to access the first cell.

[0276] For example, a UE's ability to access a first cell may include / be understood to include the UE being able to camp on the first cell and / or the UE considering the first cell to be a cell that is allowed access.

[0277] For the relevant explanation of "the UE cannot access the first cell", please refer to the relevant content above, and the details will not be described again here.

[0278] The second condition corresponding to the second information being satisfied may be understood as the UE / UE information / UE capability / information acquired by the UE (e.g., information acquired by the UE from a network device / configuration information) / configuration information of the network device satisfying the second condition corresponding to the second information, or the information configured by the base station for the UE satisfying the second condition corresponding to the second information.

[0279] The second condition includes any one or more of the following: (1) the UE supports a frequency band corresponding to the first cell; (2) the UE supports a transmission request in a frequency band corresponding to the first cell; and (3) The network device indicates that it disables NR uplink transmission with 7.5k frequency shift to the LTE raster, or the network device indicates that it enables NR uplink transmission with 7.5k frequency shift to the LTE raster and the UE supports the 7.5 kHz 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 (e.g., frequency bands n48, n38, or n40).

[0281] The UE supporting a frequency band corresponding to the first cell may include / be replaced / be understood as any one or more of the following: the UE supporting one or more frequency bands corresponding to the first cell, the UE supporting one or more downlink bands, and the UE supporting 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 the downlink. The UE supports one or more frequency bands corresponding to the first cell for the uplink.

[0282] For example, the UE supporting a frequency band corresponding to the 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, the 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 UL for FDD; the UE supporting one or more UL frequency bands corresponding to the first cell for FDD; the UE supporting one or more frequency bands corresponding to the first cell for UL for FDD, where these frequency bands are not downlink only bands; the UE supporting one or more UL frequency bands corresponding to the first cell for FDD, where these frequency bands are not downlink only bands; the UE supporting one or more frequency bands corresponding to the first cell for UL for FDD and the UE supporting one or more frequency bands corresponding to the first cell for DL; for FDD, the UE supporting one or more UL frequency bands corresponding to the first cell and the UE supporting one or more DL frequency bands corresponding to the first cell; the UE supporting one or more frequency bands corresponding to the first cell for UL for FDD and the UE supporting one or more frequency bands corresponding to the first cell for DL, where these frequency bands are 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] The UE supporting a transmission request for a frequency band corresponding to the first cell may include / be replaced with / be understood as the UE supporting a transmission request corresponding to the frequency band (e.g., one or more transmission requests or at least one transmission request) for a frequency band (e.g., one frequency band) supported by the UE.

[0285] For example, the UE supporting a transmission request for a frequency band corresponding to the first cell may include the UE supporting a transmission request (e.g., one or more transmission requests or at least one transmission request) corresponding to a frequency band (e.g., one frequency band) supported by the UE for DL ​​for TDD; or the UE supporting a transmission request (e.g., one or more transmission requests or at least one transmission request) 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 may be understood as the frequency band supported by the UE and corresponding to the first cell.

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

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

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

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

[0291] The first condition is a condition corresponding to the first information. For specific implementation, please refer to the description of the above embodiment.

[0292] In this embodiment of the present application, when the first condition is not met and the second condition corresponding to the second information is met, the UE selects or reselects a cell of 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) of 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 of the same frequency as the first cell, the UE determines that the second condition can be met (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related condition is not met), thereby avoiding a meaningless attempt to access an intra-frequency cell when the second condition is not met.

[0293] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and a second condition corresponding to the second information is satisfied, the UE determines to select or reselect a cell of the same frequency as the first cell based on the first indication information, or determines not to select or reselect a cell of the same frequency as the first cell based on the first indication information. In this way, the UE misses a cell (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) of the same frequency (e.g., the same frequency as the first cell) (e.g., another cell, a suitable cell, or a cell that can be accessed / camped on) and thereby improves 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

[0294] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and a second condition corresponding to the second information is satisfied, the UE determines to select or reselect a cell of the same frequency as the first cell based on the second indication information, or determines not to select or reselect a cell of the same frequency as the first cell based on the second indication information. 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) of 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

[0295] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and a second condition corresponding to the second information is satisfied, the UE determines to select or reselect a cell of 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 of the same frequency as the first cell based on the first indication information and the second indication information. 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) of 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

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

[0297] The third condition includes, in an unlicensed spectrum, one or more of: the first cell operates in an unlicensed spectrum, and the UE operates in an unlicensed spectrum. Alternatively, the third condition includes, in a licensed spectrum, one or more of: the first cell operates in a licensed spectrum, and the UE operates in a licensed spectrum.

[0298] Correspondingly, in one possible implementation, S302 may be replaced with: when the first condition is not met and the second condition and / or the third condition corresponding to the second information is met, the UE selects or reselects a cell of 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) of 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 of the same frequency as the first cell, the UE determines that the second condition can be met (e.g., this indicates that the UE cannot camp on the cell because the frequency band or frequency-related condition is not met), thereby avoiding a meaningless attempt to access an intra-frequency cell when the second condition is not met.

[0299] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information is satisfied, the UE decides to select or reselect a cell of the same frequency as the first cell based on the first indication information, or decides not to select or reselect a cell of the same frequency as the first cell based on the first indication information. 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) of 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

[0300] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information is satisfied, the UE decides to select or reselect a cell of the same frequency as the first cell based on the second indication information, or decides not to select or reselect a cell of the same frequency as the first cell based on the second indication information. 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) of 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

[0301] Correspondingly, in another possible embodiment, S302 may be replaced with: when the first condition is not satisfied and the second condition and / or the third condition corresponding to the second information is satisfied, the UE decides to select or reselect a cell of the same frequency as the first cell based on the first indication information and the second indication information, or decides not to select or reselect a cell of the same frequency as the first cell based on the first indication information and the second indication information. 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) of 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 on the same frequency as the first cell, the UE may determine that a second condition can be met (e.g., this indicates that the UE cannot camp on the cell because a frequency band or frequency-related condition is not met), thereby avoiding pointless attempts to access an intra-frequency cell when the second condition is not met.

[0302] Note that here, the sequence of S301, S303, S304, S305, and S306 does not exist, which is not a limitation of this application.

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

[0304] S401: When a first condition is not met or 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 of a first frequency cannot be accessed, where N is a positive integer greater than or equal to 1.

[0305] It should be understood that the inability to access a cell means that the cell is barred or considered barred, or the cell cannot be camped on.

[0306] For example, the N cells may be the N cells having the strongest signal strength on a first frequency.

[0307] For example, the Nth cell may be understood as the Nth ranked cell at the first frequency, or the Nth highest ranked cell 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, may be pre-configured, may be specified in a protocol, or may be determined by the UE, which is not specifically limited herein.

[0310] "The UE determines that the N cells, at least the N cells, or at most the 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 the N cells, at least the N cells, or at most the N cells on the first frequency cannot be accessed" may include / be understood as: each cell of the N cells, at least the N cells, or at most the N cells is prohibited or considered to be prohibited because the first condition is not met; or a portion of the N cells, at least the N cells, or at most the N cells (e.g., the highest ranked cells are prohibited) is prohibited or considered to be prohibited because the first condition is not met.

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

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

[0313] For related explanations regarding "the UE does not select or reselect a cell of the first frequency", please refer to "the UE does not select or reselect a cell of the same frequency as the first cell", and "the cell of the same frequency as the first cell" is replaced with "the cell of the first frequency". Details will not be described again here.

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

[0315] The fourth duration may be configured by the network device, may be pre-configured, may be defined in a protocol, or may be set by the UE before delivery, which 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 to be 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, if the highest ranked or best cell cannot camp on / intervene in / is not a candidate cell for reselection because the first condition is not met, the UE considers the second ranked cell on the same frequency for cell reselection. However, the second ranked cell on the frequency is also not suitable for access because the first condition is not met. In this case, the UE may consider this frequency as the lowest priority frequency within a maximum of 300 seconds, or the UE may exclude cells having the same frequency as the first cell (or a forbidden cell) as candidate cells 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 on 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 be independent of S301-S306, or may be combined with any one or more of S301-S306. It should be noted that the embodiments shown in Figures 3A and 3B may be used as separate embodiments or may be used as an entire embodiment.

[0320] All solutions in the embodiments of the present application may be combined, provided there are no contradictions.

[0321] 5 is a schematic diagram of the structure of yet 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 frequency; 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, the first condition being used to determine whether the terminal device can access the first cell; may include.

[0322] In some embodiments, 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.

[0323] In some embodiments, 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; Contains any one or more of the following:

[0324] In some embodiments, the terminal device 500 includes: a second obtaining unit 503 configured to obtain 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 a cell having the same frequency as the first cell when the first cell is prohibited or is deemed prohibited by the terminal device; The second instruction information indicates that 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 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.

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

[0326] In some embodiments, the first indication information indicates that the terminal device is not allowed to select or reselect a cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second instruction information indicates that the terminal device is not permitted to select or reselect a 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.

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

[0328] In some embodiments, the terminal device 500 includes: A third acquisition unit 504 configured to acquire second information corresponding to the first cell, the second information being not specific to a frequency band or frequency. Further comprising: The fact that the 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. Includes.

[0329] In some embodiments, the second condition is: The terminal device supports a frequency band corresponding to the first cell; The terminal device supports a transmission request in a frequency band corresponding to the first cell; and The network device indicates that NR uplink transmission with 7.5k frequency shift to the LTE raster is disabled, or the network device indicates that NR uplink transmission with 7.5k frequency shift to the LTE raster is enabled, and the terminal device supports the 7.5 kHz frequency shift; Contains any one or more of the following:

[0330] In some embodiments, the terminal device 500 includes: A determining unit 505 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 a first condition is not met, where N is a positive integer greater than or equal to 1. 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 to select or reselect a cell with the same frequency as the first cell.

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

[0333] In some embodiments, the processing unit 502 is configured to not allow selection or reselection of a cell on 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 a code or may be implemented using a circuit. In particular, 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 determining unit 505 may be a processor (e.g., the processor 301 shown in FIG. 2).

[0336] An embodiment of the present application provides a network device. The network device is configured to send first indication information and / or second indication information to a terminal device; when a first condition corresponding to the first information is not satisfied, indicate to the terminal device to determine 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. 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.

[0337] The first indication information indicates that 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 is deemed prohibited by the terminal device.

[0338] The second indication information indicates that 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 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.

[0339] In some embodiments, the first indication information indicates that the terminal device is not allowed to select or reselect a cell having the same frequency as the first cell when the first cell is barred or deemed barred by the terminal device; The second instruction information indicates that the terminal device is not permitted to select or reselect a 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.

[0340] The network device is further configured to indicate to the terminal device, based on the first indication information and / or the second indication information, when a first condition corresponding to the first information is not satisfied, to decide not to select or reselect a cell having the same frequency as the first cell.

[0341] Optionally, in this application, the terminal device or the network device may be divided into functional units based on the above method example. For example, each functional unit may be obtained by division based on the 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 in this application, the division into units is an example, and is merely a logical division of functions, and may be other divisions in actual implementation.

[0342] When an integrated unit is used, Figure 6 is a possible schematic diagram of the structure of a terminal device or a network device (referred to as a communication device 600) in the aforementioned 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 Figure 6 can be used to illustrate the structure of a network device or a terminal device in the aforementioned embodiment.

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

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

[0345] When the schematic diagram of the structure shown in Fig. 6 is used to illustrate the structure of the network device in the aforementioned embodiment, the processing unit 601 is configured to control and manage the operation of the network device, for example, to control the network device to execute S303, S304, and S305 of Fig. 3A and Fig. 3B, and / or to control the operation performed by the network device in another process described in the embodiment of the present application. The processing unit 601 may communicate with another network entity via the communication unit 602, for example, with the terminal device shown in Fig. 1. The storage unit 603 is configured to store program codes and data of the network device.

[0346] When the structural schematic diagram shown in FIG. 6 is used to illustrate the structure of the network device in the above embodiment, the communication device 600 may be a network device or a chip in 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 the terminal device or the network device located outside the chip (e.g., a read-only memory (ROM for short) or a random access memory (RAM for short).

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

[0349] In the implementation process, the steps of the methods provided in the embodiments may be performed using hardware integrated logic circuitry in a processor or using instructions in the form of software. The steps of the methods 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 a processor.

[0350] A processor in this application may include at least one of the following types of computing devices used to execute software, such as, but not limited to, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor. Each computing device may include one or more cores used to execute software instructions to perform an operation or process. A processor may be an independent semiconductor chip or may be integrated with another circuit to form a semiconductor chip. For example, a 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, a processor may be integrated into an ASIC as an embedded processor of the ASIC, and an ASIC integrated with a processor may be packaged separately or packaged with another circuit. In addition to cores configured to execute software instructions to perform operations or processes, a processor may further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a PLD (programmable logic device), or logic circuitry to perform dedicated logic operations.

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

[0352] The present application further provides a computer-readable storage medium, which stores instructions, which when executed on a computer, enable the computer to perform the method in any one of the preceding embodiments.

[0353] The present application further provides a computer program product, which when run on a computer enables the computer to perform the method in any one of the preceding embodiments.

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

[0355] The present application further provides a communication system including a network device and the aforementioned terminal device.

[0356] The present 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 perform the aforementioned method. The interface circuit is configured to communicate with another module other than the chip.

[0357] The above description of the embodiments allows those skilled in the art to understand that the above division into functional modules is used as an example for illustration for the sake of convenience. In practical application, the above functions can be allocated and implemented into different modules 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 above-described functions.

[0358] In some embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the described apparatus embodiments are merely examples. For example, the division into modules or units is merely a division of logical functions, and may be other divisions in actual implementation. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not implemented. In addition, the shown or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces. Indirect couplings or communication connections between apparatuses or units may be implemented in electronic, mechanical, 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, and may be located in one place or distributed in different places. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0360] In addition, the functional units of the embodiments of the present application may be integrated into one processing unit, and 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 sold or used as an independent product, the integrated unit may be stored in a readable storage medium. Based on such understanding, the technical solutions in the embodiments of the present application essentially, or the part contributing to the prior art, or all or part of the technical solutions may be implemented in the form of a software product. The software product is stored in a storage medium and includes some instructions for instructing a device (which may be a single-chip microcomputer or 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] Although the present application is described with reference to its specific features and embodiments, it is clear that various modifications and combinations can be made thereto without departing from the scope of the present application. Correspondingly, this specification and the accompanying drawings are merely exemplary descriptions of the present application as defined by the appended claims, and any or all modifications, variations, combinations, or equivalents encompassing the scope of the present application are considered. It is clear that a person skilled in the art can make various modifications and variations to the present application without departing from the scope of the present application. Thus, the present application intends to cover these modifications and variations of the present application, provided that these modifications and variations fall within the scope of protection defined by the following claims and their equivalent technologies.

[0363] The above description is merely a specific embodiment of the present application, and is not intended to limit the protection scope of the present application. Any variation or replacement within the technical scope disclosed in the present application shall fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. [Explanation of symbols]

[0364] 100 Mobile communication system 110 Network Devices 120 Network Devices 130 Terminal Devices 140 Terminal Devices 150 Terminal Devices 200 Network Devices 201 Processor 202 Memory 203 Transceiver 204 Network Interface 300 Terminal Devices 301 Processor 302 Memory 303 Transceiver 304 Output Device 305 Input Devices 500 Terminal Devices 501 First Acquisition Unit 502 Processing Unit 503 Second Acquisition Unit 504 Third Acquisition Unit 505 Decision Unit 600 Communication Equipment 601 Processing Unit 602 Communication Unit 603 Storage 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 indicating any one or more of information about an initial downlink BWP, information about an initial uplink BWP, and a carrier bandwidth; A step of 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, the first condition comprising: 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. and A cell selection or reselection method comprising:

2. 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, The method of claim 1.

3. 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 2.

4. 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:

4. The method according to any one of claims 1 to 3.

5. 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.

5. The method of claim 4, comprising any one or more of:

6. 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.

6. The method of claim 1, further comprising:

7. 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.

7. The method of any one of claims 1 to 6, comprising:

8. 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; 8. The method of claim 1 , comprising:

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

9. The method of claim 1, further comprising:

10. 1. A cell selection or reselection method, the method comprising: When a first condition corresponding to the first information is not satisfied, a network device transmits first indication information and / or second indication information to a terminal device, indicating that the terminal device 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 indicating any one or more of information on an initial downlink BWP, information on an initial uplink BWP, and a carrier bandwidth, the first condition is used to determine whether the terminal device can access the first cell, and 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. The step includes any one or more of the following: 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.

11. 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 10.

12. A terminal device, the terminal device comprising: A first acquisition unit configured to acquire first information corresponding to a first cell, the first information indicating any one or more of information about an initial downlink BWP, information about an initial uplink BWP, and a carrier bandwidth; 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, the first condition comprising: 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. A processing unit including any one or more of the following: A terminal device comprising:

13. 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 as claimed in claim 12.

14. 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 13.

15. 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 12 to 14.

16. 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.

16. The terminal device of claim 15, comprising any one or more of the following:

17. 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 12 to 16.

18. 18. A terminal device according to any one of claims 12 to 17, wherein the processing unit is configured to allow selection or reselection of the cell on the same frequency as the first cell.

19. 19. A terminal device according to any one of claims 12 to 18, wherein the processing unit is configured to not allow selection or reselection of the cell on the same frequency as the first cell.

20. the first cell operates in an unlicensed spectrum and / or a licensed spectrum; A terminal device according to any one of claims 12 to 19.

21. 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 indicates any one or more of information about an initial downlink BWP, information about an initial uplink BWP, and a carrier bandwidth, and the first condition is used to determine whether the terminal device can access the first cell, and 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. Any one or more of the following: 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.

22. 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.

22. The network device of claim 21.

23. 12. A computer-readable storage medium comprising computer instructions which, 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 9 or any one of claims 10 and 11.

24. 12. 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 9 to be performed, or causes a cell selection or reselection method as claimed in any one of claims 10 and 11 to be performed.

25. 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 9 or any one of claims 10 and 11.

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