Cell reselection method, user terminal, network device, program product, and readable storage medium

Abstract

The present application provides a cell reselection method applied to a user terminal (UE). The method comprises: receiving a neighbor cell message sent by a network device, the neighbor cell message being used for indicating a directional relationship between a plurality of neighbor cells and a cell where the UE camps on, and the priority of the plurality of neighbor cells, and the network device being used for covering the cell where the UE camps on; and on the basis of the neighbor cell message, selecting a neighbor cell from among the plurality of neighbor cells to camp on.

Description

Cell reselection method, user terminal, network equipment, program product and readable storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 24, 2024, with application number 202410104458.5 and invention name “Cell Reselection Method, User Terminal, Network Device, Program Product and Readable Storage Medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technologies, and in particular to a cell reselection method, a user terminal, a network device, a computer program product, and a computer-readable storage medium. Background Art

[0003] In high-speed scenarios, such as high-speed rail, user activity tends to be linear. Therefore, the 3GPP RRC protocol defines a high-speed dedicated network (HSDN), which includes neighboring cells defined using a one-dimensional, linear road-based neighborhood relationship. This allows UEs operating at high speeds to reselect cells within the HSDN.

[0004] However, when studying cell reselection schemes for UEs in high-speed private networks, it was discovered that when a UE is moving at high speed in one direction, it may reselect a neighboring cell that is not located along the current direction of movement. Since the cell to which the UE reselects is not located along the current direction of movement, the UE will quickly lose connection with the cell and reselect a neighboring cell along the current direction of movement. This is not conducive to efficient cell reselection for the UE. Summary of the Invention

[0005] The present application provides a cell reselection method, a user terminal, a network device, a computer program product, and a computer-readable storage medium, the purpose of which is to enable the user terminal to efficiently complete cell reselection.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a cell reselection method applied to a user terminal UE, the method comprising: receiving a neighbor cell message sent by a network device, the neighbor cell message being used to indicate the directional relationship between multiple neighbor cells and the UE's resident cell, as well as the order of the multiple neighbor cells, and the network device being used to cover the UE's resident cell; based on the neighbor cell message, selecting a neighbor cell to reside in among multiple neighbor cells.

[0008] As can be seen from the above content: the UE receives a neighbor cell message, which can indicate the directional relationship between multiple neighbor cells and the UE's home cell, as well as the order of the multiple neighbor cells. The UE selects a neighbor cell with the same direction as the UE to reside based on the directional relationship between the multiple neighbor cells and the UE's home cell, which can ensure that the UE completes cell reselection efficiently. Furthermore, when selecting a neighbor cell to reside in, the UE can also select a neighbor cell with a higher order and the same direction as itself based on the order of the multiple neighbor cells, thereby reducing the number of times the UE selects a neighbor cell to reside in and further improving efficiency.

[0009] In a possible implementation, receiving a neighbor cell message sent by a network device includes: receiving a system information block SIB sent by the network device, where an information element in the SIB carries the neighbor cell message.

[0010] In a possible implementation, receiving a system information block SIB sent by a network device includes: receiving SIB3 sent by the network device, where an information element in SIB3 carries a neighbor cell message.

[0011] In a possible implementation, receiving a system information block SIB sent by a network device includes: receiving SIB4 sent by the network device, where an information element in SIB4 carries a neighbor cell message.

[0012] In a possible implementation, receiving a system information block SIB sent by a network device includes: receiving SIB5 sent by the network device, where an information element in SIB5 carries a neighbor cell message.

[0013] In a possible implementation, one bit of the neighbor cell sequence in the information element in the SIB is used to indicate the directional relationship between the neighbor cell and the UE's camped cell, and multiple bits are used to indicate the order of the neighbor cells.

[0014] In one possible implementation, based on the neighbor cell message, a neighbor cell is selected from multiple neighbor cells to reside in, including: obtaining a priority relationship between multiple neighbor cells based on the neighbor cell message and the moving direction of the UE; and selecting a neighbor cell to reside in from multiple neighbor cells based on the priority relationship between the multiple neighbor cells.

[0015] In one possible implementation, based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells is obtained, including: based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells that satisfies a first rule is obtained, and the first rule includes: the priority of the neighboring cell in the same direction as the UE moving direction is higher than the priority of the neighboring cell in the opposite direction of the UE moving direction.

[0016] In one possible implementation, based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells is obtained, including: based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells that meets the second rule is obtained, and the second rule includes: among multiple neighboring cells in the same direction as the UE moving direction, the neighboring cell with a larger order has a higher priority.

[0017] In one possible implementation, based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells is obtained, including: based on the neighboring cell message and the moving direction of the UE, a priority relationship of multiple neighboring cells that satisfies a third rule is obtained, and the third rule includes: among multiple neighboring cells in the opposite direction of the UE's moving direction, a neighboring cell with a larger order has a lower priority.

[0018] In the second aspect, the present application provides a cell reselection method applied to a network device, which is used to cover the resident cell of the UE; the method includes: sending a neighbor cell message to the user terminal UE, the neighbor cell message is used to indicate the directional relationship between multiple neighbor cells and the resident cell of the UE, and the order of the multiple neighbor cells, and the UE is used to select a neighbor cell to reside in among the multiple neighbor cells based on the neighbor cell message.

[0019] In a possible implementation, sending the neighbor cell message to the user terminal UE includes: sending a system information block SIB to the UE, where an information element in the SIB carries the neighbor cell message.

[0020] In a possible implementation, sending a system information block SIB to the UE includes: sending SIB3 to the UE, where an information element in the SIB3 carries neighboring cell information.

[0021] In a possible implementation, sending a system information block SIB to the UE includes: sending SIB4 to the UE, where an information element in the SIB4 carries neighboring cell information.

[0022] In a possible implementation, sending a system information block SIB to the UE includes: sending SIB5 to the UE, where an information element in SIB5 carries neighboring cell information.

[0023] In a possible implementation, one bit of the neighbor cell sequence in the information element in the SIB is used to indicate the directional relationship between the neighbor cell and the UE's camped cell, and multiple bits are used to indicate the order of the neighbor cells.

[0024] In a third aspect, the present application provides a user terminal comprising: one or more processors, and a memory; the memory is coupled to the one or more processors, the memory being used to store a computer program, the computer program comprising computer instructions, and when the one or more processors execute the computer instructions, the electronic device executes the cell reselection method as described in any one of the first aspect and its possible implementations.

[0025] In a fourth aspect, the present application provides a network device comprising: one or more processors, and a memory; the memory is coupled to the one or more processors, the memory being used to store a computer program, the computer program comprising computer instructions, and when the one or more processors execute the computer instructions, the electronic device executes the cell reselection method as described in any one of the second aspect and its possible implementations.

[0026] In a fifth aspect, the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed, it is specifically used to implement the cell reselection method as described in the first aspect and any one of its possible implementation methods, or to implement the cell reselection method as described in the second aspect and any one of its possible implementation methods.

[0027] In a sixth aspect, the present application provides a computer program product. When the computer program in the computer program product is executed by the processor, the processor executes the cell reselection method as described in the first aspect and any one of its possible implementations, or implements the cell reselection method as described in the second aspect and any one of its possible implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0029] FIG2 is an interaction diagram of a cell reselection method provided in an embodiment of the present application;

[0030] FIG3 is a diagram showing a UE measuring a neighboring cell based on the priority of the neighboring cell according to an embodiment of the present application;

[0031] FIG4 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0032] FIG5 is a schematic diagram of the structure of a user terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of this application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0034] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in some embodiments" or "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The "multiple" involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first" and "second" are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance or order.

[0036] The 3GPP radio resource control (RRC) protocol defines neighboring cells based on a two-dimensional, geographically approximate relationship. A neighboring cell is a cell adjacent to the cell where the user equipment (UE) is currently stationed. In most scenarios, a user's movement trajectory can be understood as a two-dimensional trajectory. Therefore, based on the 3GPP RRC protocol definition, the UE can reselect a suitable neighboring cell.

[0037] However, in high-speed scenarios such as high-speed rail, user activity trajectories tend to be linear, not two-dimensional. When a UE performs cell reselection based on neighboring cells designed in a two-dimensional plane, it will measure many redundant neighboring cells (such as those not located along the high-speed rail line), which is not conducive to the UE's efficient reselection of a suitable neighboring cell.

[0038] To address this, the 3GPP RRC protocol defines a high-speed dedicated network (HSDN), which includes neighboring cells defined using a one-dimensional linear road-based neighbor relationship. This allows UEs operating at high speeds to reselect cells in the HSDN.

[0039] However, when studying the solution for UE to reselect cells in a high-speed private network, it was found that: when the UE is in a scenario where it is moving at high speed in one direction, the UE will reselect a neighboring cell that is not along the current moving direction. Since the cell where the UE reselects to reside is not along the current moving direction of the UE, the UE will soon be disconnected from the cell where it resides and reselect a neighboring cell along the current moving direction to reside. This is not conducive to the UE to efficiently reselect cells. For example, the UE moves at high speed from south to north. The cells defined by the high-speed private network include cell 1, cell 2, cell 3..., and multiple cells are arranged from south to north. The UE is currently residing in cell 2. When the UE performs cell reselection, it reselects to reside in cell 1. The UE then disconnects from cell 1 and resides in cell 3.

[0040] Based on this, an embodiment of the present application provides a cell reselection method, which can be applicable to the fifth generation (5G) communication system, and can also be applicable to 2G, 3G, and 4G communication systems. It can also be an LTE and 5G hybrid architecture, or a 5G new wireless (5G New Radio, 5G NR) system, as well as new communication systems that will emerge in future communication developments.

[0041] For ease of understanding, a communication system is first introduced as an example with reference to Figure 1. Figure 1 includes a network device 1, UE1, and UE2.

[0042] In some embodiments, network device 1 is a device deployed in a wireless access network to provide wireless communication functions for user terminals. In one application scenario, network device 1 can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, or a base station in a future mobile communication system. Network device 1 can be a macro base station, a micro base station, an indoor station, a relay node, or a donor node. In another application scenario, network device 1 can implement some of the functions of a base station. For example, network device 1 can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU).

[0043] In some embodiments, the network device 1 can communicate with a user terminal, and can also communicate with a terminal device through a relay station.

[0044] UE1 and UE2 are devices with wireless transceiver capabilities and can send and receive signals to and from base stations. For example, UE1 and UE2 can communicate with network devices supporting LTE networks, network devices supporting 5G networks, and can also establish dual connections with network devices supporting LTE networks and network devices supporting 5G networks.

[0045] In some embodiments, UE1 and UE2 may be in various forms, such as a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, an in-vehicle terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wearable terminal device, etc. UE may also be referred to as a terminal device, an access terminal device, an in-vehicle terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus, etc.

[0046] The cell reselection method provided by the embodiment of the present application is introduced below using network device 1 and UE 1 as an example. For example, in the embodiment of the present application, the serving cell (referred to as the current cell) where UE 1 currently resides is covered by network device 1, that is, in the current cell, UE 1 and network device 1 perform wireless communication.

[0047] As shown in FIG2 , the cell reselection method includes the following steps:

[0048] S201. Network device 1 sends a neighboring cell message.

[0049] In some embodiments, network device 1 broadcasts a neighbor cell message, which may include indication information of multiple neighbor cells. The indication information of the neighbor cells is used to indicate the directional relationship between the neighbor cells and the current cell, and is also used to indicate the order of the neighbor cells from the current cell in the direction indicated by the directional relationship.

[0050] In other words, the neighbor cell message sent by network device 1 is used to indicate the directional relationship between multiple neighbor cells and the current cell, as well as the order of the multiple neighbor cells. Because the directional relationship between the neighbor cells and the current cell is a one-dimensional directional relationship, the neighbor cell message can also be understood as indicating the one-dimensional order relationship between the current cell and multiple neighbor cells.

[0051] In other embodiments, the neighbor cell message uses a data format such as an information cell, which can also be understood as the network device 1 adding a new information cell to carry the neighbor cell message. As shown in Table 1 below, one bit in the information cell Neighbor Sequence is used to indicate the directional relationship between the neighbor cell and the current cell, and the other n bits are used to indicate the order in which the neighbor cells send the directions indicated by the directional relationship.

[0052] Table 1

[0053] For example, in Table 1, a value of 0 in bit 0 may represent one direction, and a value of 1 may represent another direction.

[0054] In some embodiments, at least one of SIB3, SIB4 and SIB5 may have a new information element added to carry neighbor cell messages. SIB3, SIB4 and SIB5 are different system information blocks (SIBs). SIB3 belongs to the same-frequency neighbor cell reselection information, SIB4 belongs to the different-frequency neighbor cell reselection information, and SIB5 belongs to the different-standard neighbor cell reselection information.

[0055] In some embodiments, the neighbor cell information carried in the newly added SIB3 information element is used to indicate whether the current cell is a co-frequency cell, that is, the direction relationship and order of the neighboring cells using the same carrier frequency as the current cell. Of course, there can be one or more co-frequency cells. The neighbor cell information of a neighbor cell can be carried in a Neighbor Sequence in the newly added SIB3 information element.

[0056] The neighboring cell information carried by the newly added SIB4 information element is used to indicate that the current cell is an inter-frequency cell, that is, the neighboring cell that uses a different carrier frequency than the current cell and the direction relationship and order of the current cell. Of course, there can be one or more inter-frequency cells.

[0057] The neighbor cell information carried by the newly added SIB5 information element is used to indicate the directional relationship and order of neighboring cells of different RATs with the current cell. For example, if the current cell is an NR cell, the neighbor cell information carried by the newly added SIB5 information element indicates the directional relationship and order of one or more LTE cells with the current cell.

[0058] In this way, the network device 1 sending a neighbor cell message can be understood as the network device sending SIB3, SIB4 and SIB5, at least one of SIB3, SIB4 and SIB5 carries the neighbor cell message, which can enable UE1 to reselect the neighbor cell to reside in from the same-frequency cell, different-frequency cell and different-standard cell (or different-system cell) based on the neighbor cell message carried by the newly added information elements of SIB3, SIB4 and SIB5.

[0059] S202. UE1 receives a neighbor cell message.

[0060] In some embodiments, UE1 receives a neighboring cell message broadcast by network device 1 .

[0061] In some other embodiments, UE1 is in an idle state (RRC_IDLE) and has no ongoing services. UE1 monitors system broadcasts. When network device 1 broadcasts a neighbor cell message, UE1 can monitor and receive the neighbor cell message.

[0062] In other embodiments, network device 1 sends SIB3, SIB4 and SIB5, and in a scenario where at least one of SIB3, SIB4 and SIB5 carries a neighbor cell message, UE1 receives SIB3, SIB4 and SIB5, and parses the neighbor cell message from SIB3, SIB4 or SIB5.

[0063] S203: UE1 determines its own moving direction.

[0064] In some embodiments, UE1 may determine its own moving direction based on its own information. UE1 may determine its own moving direction based on a positioning system such as a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and / or a satellite-based augmentation system (SBAS).

[0065] In some other embodiments, UE1 may determine its own moving direction based on information of historical camped cells.

[0066] The execution order of step S202 and step S203 is not limited to that in FIG. 2 . In some embodiments, UE1 may execute step S202 and step S203 in parallel.

[0067] S204. UE1 obtains priority relationships among multiple neighboring cells based on the neighboring cell message and its own moving direction, and selects a neighboring cell to reside in based on the priority relationships.

[0068] UE1 receives the neighboring cell relationship and parses the direction relationship between the multiple neighboring cells and the current cell indicated by the neighboring cell relationship, as well as the order of the multiple neighboring cells. UE1 obtains the priority relationship between the multiple neighboring cells based on its own moving direction, the direction relationship between the neighboring cells and the current cell, and the order of the neighboring cells. In some embodiments, when UE1 obtains the priority relationship between the multiple neighboring cells, the priority of the neighboring cells in the same direction as the UE1's moving direction is higher than the neighboring cells in the opposite direction of the UE1's moving direction. In other embodiments, among the multiple neighboring cells in the same direction as the UE1's moving direction, the neighboring cells with a higher order have a higher priority. It can be seen that the probability of UE1 reselecting and residing in the neighboring cells with a higher priority is greater. Therefore, UE1 prioritizes residing in the neighboring cells in the same direction as its own moving direction and farther away from the current cell, which can reduce the frequency of reselection. In other embodiments, among the multiple neighboring cells in the opposite direction of the UE1's moving direction, the neighboring cells with a higher order have a lower priority.

[0069] In some embodiments, UE1 receives SIB3, SIB4 and SIB5, and can parse the direction relationship between the neighboring cell and the current cell, as well as the order of multiple neighboring cells from the newly added information elements of SIB3, SIB4 and SIB5.

[0070] It is understandable that UE1 obtains the priority relationship of multiple neighboring cells and can queue the multiple neighboring cells according to the priority relationship.

[0071] After obtaining the priority relationships of multiple neighboring cells based on the neighboring cell message, UE1 selects a neighboring cell to reside in based on the priority relationships. It should be noted that, in the process of selecting a neighboring cell to reside in based on the priority relationships, UE1 may select a neighboring cell with a high priority based on the S criterion and the R criterion.

[0072] For example, as shown in FIG3 , UE1 parses the neighboring cell message and obtains that the neighboring cells to the north of the current cell include: neighboring cells 1N, 2N, to mN, and the neighboring cells to the south of the current cell include: neighboring cells 1S, 2S, to mS, where m is an integer greater than 2. Furthermore, UE1 obtains that its own moving direction is from south to north.

[0073] In this way, UE1 obtains the following priority relationship among multiple neighboring cells: neighboring cell 2N is the higher-priority neighboring cell, neighboring cell 1N is the higher-priority neighboring cell, neighboring cell 1S is the lower-priority neighboring cell, and neighboring cell 2S is the even lower-priority neighboring cell. Based on the priority relationship among multiple neighboring cells, UE1 prioritizes neighboring cell 2N for resident. If neighboring cell 2N does not meet the S and R criteria, UE1 can resident in neighboring cell 1N.

[0074] It should be noted that the priorities of neighbor cells 3N to mN shown in FIG3 are higher than those of neighbor cell 2N, and may be successively higher. Thus, UE1 selects a neighbor cell to reside in priority based on the priority relationship of multiple neighbor cells.

[0075] In an embodiment of the present application, UE1 can obtain the azimuth relationship and position of multiple neighboring cells with the current cell based on the neighboring cell message. UE1 can reselect to reside in a neighboring cell in the same direction as its own moving direction, avoiding the problem of low UE1 cell reselection efficiency caused by residing in a neighboring cell in the opposite direction of UE1's moving direction.

[0076] The following further introduces the hardware implementation of the network device and the UE in conjunction with FIG4 and FIG5.

[0077] As shown in Figure 4, the network device includes: at least one processor 410, at least one memory 420, at least one transceiver 430, at least one network interface 440, and one or more antennas 450. The processor 410, memory 420, transceiver 430, and network interface 440 are connected, for example, via a bus. In the embodiment of the present application, the connection may include various interfaces, transmission lines, or buses, etc., which are not limited in this embodiment. Antenna 450 is connected to transceiver 430. The network interface 440 is used to connect the network element to other communication devices through a communication link. For example, the network interface 440 may include a network interface between the network element and a network element in the core network, such as an S1 interface, or a network interface between the network element and other network elements, such as an X2 or Xn interface.

[0078] The processor 410 shown in Figure 4 can specifically complete the actions of network device processing in the above-mentioned cell reselection method, the memory 420 can complete the actions stored in the above-mentioned cell reselection method, the transceiver 430 and the antenna 450 can perform the transceiver actions in the above-mentioned cell reselection method, and the network interface 440 can complete the actions of interaction between the network device and the UE in the above-mentioned method.

[0079] Processor 410 may include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor, among other types of computing devices that run software. Each computing device may include one or more cores for executing software instructions to perform operations or processing. The processor may be a standalone semiconductor chip or integrated into a semiconductor chip with other circuits. For example, it may form a system-on-chip (SoC) with other circuits (such as codec circuits, hardware acceleration circuits, or various bus and interface circuits). Alternatively, it may be integrated into an ASIC as a built-in processor. The ASIC with the integrated processor may be packaged separately or together with other circuits. In addition to the core for executing software instructions to perform operations or processing, the processor may further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a PLD (programmable logic device), or logic circuits that implement specialized logic operations.

[0080] The memory 420 may include at least one of the following types but is not limited thereto: a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM).

[0081] The transceiver 430 can be used to support the reception or transmission of radio frequency signals between the network element and other devices. The transceiver 430 can be connected to the antenna 450. The transceiver 430 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 450 can receive radio frequency signals. The receiver Rx of the transceiver 430 is used to receive radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 410 so that the processor 410 can further process the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 430 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 410, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 450. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of down-mixing and analog-to-digital conversion is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal. The order of up-mixing and digital-to-analog conversion is adjustable. Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.

[0082] As shown in FIG5 , the UE may include a processor 510 , an internal memory 520 , an antenna 1 , and a mobile communication module 530 .

[0083] It should be understood that, to facilitate understanding of the embodiments of the present application, the UE shown in FIG5 only includes some components related to the cell reselection method provided in the embodiments of the present application. The UE provided in the embodiments of the present application may include more or fewer components than the UE shown in FIG5 . In other words, the UE shown in FIG5 does not constitute a specific limitation on the UE provided in the embodiments of the present application.

[0084] The processor 510 may include one or more processing units. For example, the processor 510 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU).

[0085] The internal memory 520 can be used to store computer executable program codes, and the executable program codes include instructions. The processor 510 executes various functional applications and data processing of the UE by running the instructions stored in the internal memory 520. The internal memory 520 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function, etc. The data storage area may store data created during the use of the UE (such as channel state information), etc. In addition, the internal memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 executes various functions and data processing of the UE by running the instructions stored in the internal memory 520, and / or the instructions stored in the memory provided in the processor.

[0086] The wireless communication function of the UE can be implemented through the antenna 1, the mobile communication module 530, the modem processor and the baseband processor.

[0087] Antenna 1 is used to transmit and receive electromagnetic wave signals. Each antenna in the UE can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antenna can be used in conjunction with a tuning switch.

[0088] The mobile communication module 530 can provide wireless communication solutions for UEs, including 2G / 3G / 4G / 5G. The mobile communication module 530 may include at least one filter, a switch, a power amplifier, a low-noise amplifier (LNA), and the like. The mobile communication module 530 can receive electromagnetic waves from antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modem processor for demodulation. The mobile communication module 530 can also amplify the signals modulated by the modem processor and convert them into electromagnetic waves for radiation via antenna 1.

[0089] An embodiment of the present application further provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is executed on one or more computing devices, the one or more computing devices execute the cell reselection method described in the above embodiment.

[0090] The computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0091] The present application also provides a computer program product. When executed by one or more computing devices, the one or more computing devices perform any of the aforementioned cell reselection methods. The computer program product may be a software installation package. When any of the aforementioned cell reselection methods is required, the computer program product may be downloaded and executed on a computer.

Claims

1. A cell reselection method, characterized in that, Applied to a user equipment (UE), the method includes: Receiving a neighbor cell message sent by a network device, where the neighbor cell message is used to indicate the direction relationship between a plurality of neighbor cells and the serving cell of the UE, and the order of the plurality of neighbor cells, and the network device is used to cover the serving cell of the UE; Selecting a neighbor cell to camp on based on the neighbor cell message among the plurality of neighbor cells.

2. The cell reselection method according to claim 1, wherein The receiving the neighbor cell message sent by the network device includes: Receiving a system information block (SIB) sent by the network device, where a cell in the SIB carries the neighbor cell message.

3. The cell reselection method according to claim 2, wherein The receiving the system information block (SIB) sent by the network device includes: Receiving SIB3 sent by the network device, where a cell in the SIB3 carries the neighbor cell message.

4. The cell reselection method according to claim 2, characterized in that, The receiving the system information block (SIB) sent by the network device includes: Receiving SIB4 sent by the network device, where a cell in the SIB4 carries the neighbor cell message.

5. The cell reselection method according to claim 2, wherein The receiving the system information block (SIB) sent by the network device includes: Receiving SIB5 sent by the network device, where a cell in the SIB5 carries the neighbor cell message.

6. The cell reselection method according to claim 2, wherein One bit of the neighbor cell sequence in the cell of the SIB is used to indicate the direction relationship between the neighbor cell and the serving cell of the UE, and multiple bits are used to indicate the order of the neighbor cell.

7. The cell reselection method according to claim 1, wherein The selecting a neighbor cell to camp on based on the neighbor cell message among the plurality of neighbor cells includes: Obtaining the priority relationship of the plurality of neighbor cells based on the neighbor cell message and the moving direction of the UE; Selecting a neighbor cell to camp on among the plurality of neighbor cells based on the priority relationship of the plurality of neighbor cells.

8. The cell reselection method according to claim 7, wherein The obtaining the priority relationship of the plurality of neighbor cells based on the neighbor cell message and the moving direction of the UE includes: Obtaining the priority relationship of the plurality of neighbor cells that satisfies a first rule based on the neighbor cell message and the moving direction of the UE, where the first rule includes: the priority of a neighbor cell in the same direction as the moving direction of the UE is higher than the priority of a neighbor cell in the opposite direction to the moving direction of the UE.

9. The cell reselection method according to claim 7 or 8, characterized in that The obtaining the priority relationship of the plurality of neighbor cells based on the neighbor cell message and the moving direction of the UE includes: Obtaining the priority relationship of the plurality of neighbor cells that satisfies a second rule based on the neighbor cell message and the moving direction of the UE, where the second rule includes: among the plurality of neighbor cells in the same direction as the moving direction of the UE, the neighbor cell with a larger order has a higher priority.

10. The cell reselection method according to any one of claims 7 to 9, characterized in that, The obtaining the priority relationship of the plurality of neighbor cells based on the neighbor cell message and the moving direction of the UE includes: Obtaining the priority relationship of the plurality of neighbor cells that satisfies a third rule based on the neighbor cell message and the moving direction of the UE, where the third rule includes: among the plurality of neighbor cells in the opposite direction to the moving direction of the UE, the neighbor cell with a larger order has a lower priority.

11. A cell reselection method, characterized in that, Applied to a network device, the network device is used to cover the serving cell of the UE; the method includes: Sending a neighbor cell message to a user equipment (UE), where the neighbor cell message is used to indicate the direction relationship between a plurality of neighbor cells and the serving cell of the UE, and the order of the plurality of neighbor cells, and the UE is used to select a neighbor cell to camp on based on the neighbor cell message among the plurality of neighbor cells.

12. The cell reselection method according to claim 11, wherein The sending the neighbor cell message to the user equipment (UE) includes: Send a System Information Block (SIB) to the UE, where the cell in the SIB carries the neighboring cell message.

13. The cell reselection method according to claim 12, characterized in that, The sending of the SIB to the UE includes: Send SIB3 to the UE, where the cell in the SIB3 carries the neighboring cell message.

14. The cell reselection method according to claim 12, wherein The sending of the SIB to the UE includes: Send SIB4 to the UE, where the cell in the SIB4 carries the neighboring cell message.

15. The cell reselection method according to claim 12, wherein The sending of the SIB to the UE includes: Send SIB5 to the UE, where the cell in the SIB5 carries the neighboring cell message.

16. The cell reselection method according to claim 12, wherein One bit of the neighboring cell sequence in the cell of the SIB is used to indicate the direction relationship between the neighboring cell and the serving cell of the UE, and multiple bits are used to indicate the order of the neighboring cell.

17. A user terminal, characterized in that, Includes: One or more processors, and a memory; The memory is coupled to the one or more processors, and the memory is used to store a computer program, the computer program includes computer instructions, when the one or more processors execute the computer instructions, the electronic device executes the cell reselection method according to any one of claims 1 to 10.

18. A network device, characterized in that, Includes: One or more processors, and a memory; The memory is coupled to the one or more processors, and the memory is used to store a computer program, the computer program includes computer instructions, when the one or more processors execute the computer instructions, the electronic device executes the cell reselection method according to any one of claims 11 to 16.

19. A computer-readable storage medium, characterized in that, For storing a computer program, when the computer program is executed, it is specifically used to implement the cell reselection method according to any one of claims 1 to 10, or implement the cell reselection method according to any one of claims 11 to 16.

20. A computer program product, characterized in that, When the computer program in the computer program product is executed by the processor, the processor executes the cell reselection method according to any one of claims 1 to 10, or implements the cell reselection method according to any one of claims 11 to 16.

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