Method and apparatus for cell reselection

Abstract

A method and device for cell reselection are provided, which include receiving, from a network device, a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information for the frequency priority, or index information for the frequency priority.

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This application claims priority from Chinese Patent Application No. 202010057898.1, filed in China on January 19, 2020, the entire contents of which are incorporated herein by reference. [Technical field] TECHNICAL FIELD The embodiments of the present disclosure relate to the field of communications technology, and more particularly to a method and apparatus for cell reselection. [Background technology]

[0002] A terminal in an idle state reselects a cell based on the frequency priority set by the network, and selects a frequency to stay on preferentially. There are two methods for setting frequency priority. (1) Broadcasting frequency priority in a system message. Since the frequency priority that is broadcast is the same for all terminals in a cell, it is not possible to distinguish between users. (2) Setting frequency priority through dedicated signaling (e.g., Radio Resource Control release (RRC) message).

[0003] In the fourth generation wireless communication technology (4G (fourth generation)) era, dedicated frequency priority is mainly used for network load balancing, offloading users to less busy carriers. In the fifth generation wireless communication technology (5G (5th generation)) era, with the diversification of terminal types and the diversification of services supported by terminals, the use of dedicated frequency priority is also becoming more diverse and flexible.

[0004] For example, for slices introduced in 5G, the same terminal can support services of multiple slices, and a cell can also support services of multiple slices, but the terminal can only access cells of the slices supported by the terminal. According to the related technology, the network sets a dedicated frequency priority for the terminal based on the slices supported by the terminal (e.g., increases the frequency priority supporting this slice). However, when the terminal moves to another cell, according to the conventional protocol, the terminal continues to use the dedicated frequency priority, but the slice may no longer be supported in the new cell. Therefore, even if the dedicated frequency priority is still used in this case, the original purpose cannot be achieved, and there is a possibility of network load imbalance.

[0005] As another example, in a multi-radio access technology dual connectivity (MR-DC) scenario, taking dual connectivity of a 4G radio access network and a 5G NR (EN-DC (E-UTRA-NR Dual Connectivity)) as an example, a 5G terminal and a normal 4G terminal both stay in a 4G LTE network in an idle state, but the network can set a dedicated frequency priority for an EN-DC terminal that is different from that of an LTE terminal (for example, by increasing the frequency priority of an LTE carrier that supports EN-DC). However, if an EN-DC terminal moves to another cell, according to the conventional protocol, the terminal will continue to use a dedicated frequency priority, but the new cell may not have 5G coverage. Therefore, even if a dedicated frequency priority is still used in this case, the terminal may not be able to operate in 5G mode and the network may become unbalanced in load.

[0006] From the above, it can be seen that the set frequency priority cannot satisfy the flexibility of various terminal types and various services. Summary of the Invention [Problem to be solved by the invention]

[0007] The embodiments of the present disclosure provide a cell reselection method and device for solving the problem that the set frequency priority cannot satisfy the flexibility of various terminal types and various services. [Means for solving the problem]

[0008] As a first aspect, some embodiments of the present disclosure provide a cell reselection method. A cell reselection method applied to a terminal, comprising: Receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority from a network device; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0009] Optionally, the method further comprises: The method further includes determining a frequency priority to be used for cell reselection based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

[0010] Optionally, the instruction information includes: Whether MR-DC is supported in the own cell and / or neighboring cells; The types of slices supported in the own cell and / or neighboring cells; Whether a given dedicated network is supported in the own cell and / or in the neighboring cells; The type of dedicated networks supported in the own cell and / or in neighboring cells; Specify one or more of the following.

[0011] Optionally, determining a frequency priority to be used for cell reselection based on the capability information of the terminal and / or the instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority, When the frequency priority reason, or the information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, determining a frequency priority corresponding to the frequency priority information as a frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates MR-DC, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and MR-DC is supported in the terminal, determining the frequency priority corresponding to the MR-DC as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a slice, the terminal receives the type of slice supported in the own cell and / or the neighboring cell, and the terminal supports the slice or intends to start a slice-related service, determining the frequency priority corresponding to the slice as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or the neighboring cell, or the terminal receives the type of the dedicated network supported in the own cell and / or the neighboring cell, and the terminal is located within the predetermined dedicated network, determining the frequency priority corresponding to the predetermined dedicated network as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives a type of slice supported in the own cell and / or a neighboring cell, and the terminal does not support a slice, determining a frequency priority corresponding to the load balancing or default as a frequency priority to be used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and the terminal does not support the MR-DC, determining the frequency priority corresponding to the load balancing or default as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, and the terminal does not receive the instruction information, determining the frequency priority corresponding to the load balancing or default as a frequency priority to be used for the cell reselection; Contains one or more of the following:

[0012] Optionally, the method further comprises: When receiving frequency priority activation information transmitted from a network device, determine a frequency priority to be used for cell reselection based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority; The method further includes adopting a default frequency priority as a frequency priority for cell reselection when frequency priority activation information transmitted from the network equipment is not received.

[0013] Selectively receiving the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device, This includes receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information for the frequency priority, or index information for the frequency priority from a network device by a broadcast message or dedicated signaling.

[0014] Optionally, the method further comprises: receiving a valid time of the frequency priority from the network device; If the conditions for determining the frequency priority as the frequency priority to be used for the cell reselection are not satisfied, the frequency priority is suspended until the validity time of the frequency priority expires or until a new frequency priority is received.

[0015] Optionally, the method further comprises: The method further includes transmitting capability information of the terminal to the network device; The capability information of the terminal is Information on slices supported by the terminal; A combination of MR-DC frequency bands supported by the terminal; Contains one or more of the following:

[0016] As a second aspect, some embodiments of the present disclosure further provide a cell reselection method. A cell reselection method applied to a network device, comprising: Transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0017] Selectively transmitting the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to a terminal, This includes transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to the terminal by a broadcast message or dedicated signaling.

[0018] In a third aspect, some embodiments of the present disclosure further provide a terminal. This device is A first receiving module is provided for receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority from a network device; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0019] As a fourth aspect, some embodiments of the present disclosure further provide a terminal. This device is a first transceiver and a first processor; The first transceiver is used to receive a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0020] In a fifth aspect, some embodiments of the present disclosure further provide a network device. This network device is A second transmission module is provided for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0021] As a sixth aspect, some embodiments of the present disclosure further provide a network device. This network device is a second processor and a second transceiver; The second transceiver is used for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0022] In a seventh aspect, some embodiments of the present disclosure further provide a communication device. This communication device is A processor, a memory, and a program stored in the memory and executable by the processor, When the program is executed by the processor, the cell reselection method according to the first or second aspect is realized.

[0023] In an eighth aspect, some embodiments of the present disclosure further provide a computer-readable storage medium. The computer-readable storage medium includes: storing a computer program; When the computer program is executed by a processor, the cell reselection method according to the first or second aspect is realized. Effect of the Invention

[0024] In some embodiments of the present disclosure, an appropriate frequency priority can be selected based on frequency priority reasons, or information on whether it is valid, or valid conditions, or index information, to perform cell reselection, thereby satisfying the flexibility of various terminal types (e.g., 5G terminals) and various services. [Brief description of the drawings]

[0025] Such other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are for purposes of illustrating the preferred embodiments only and are not intended to limit the disclosure. The same elements are designated by the same reference numerals throughout the drawings.

[0026] [Figure 1] FIG. 1 is a diagram showing the architecture of a wireless communication system. [Diagram 2] FIG. 2 is a flowchart illustrating a cell reselection method according to some embodiments of the present disclosure. [Diagram 3] FIG. 3 is a flowchart illustrating a cell reselection method according to some embodiments of the present disclosure. [Figure 4] FIG. 4 is a diagram illustrating a terminal according to some embodiments of the present disclosure. [Diagram 5] FIG. 5 is a second diagram illustrating a terminal according to some embodiments of the present disclosure. [Figure 6] FIG. 6 is a diagram illustrating a network device according to some embodiments of the present disclosure. [Figure 7] FIG. 7 is a second diagram illustrating a network device according to some embodiments of the present disclosure. [Figure 8] FIG. 8 illustrates a communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, the technical means of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and are not all of them. Based on the embodiments of the present disclosure, all other embodiments that can be made by those skilled in the art without any creative work shall belong to the protection scope of the present disclosure.

[0028] In the specification and claims of this application, "comprises" and any variations thereof mean non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units explicitly recited, but may include other steps or units not explicitly recited or inherent to the process, method, product, or device. In addition, "and / or" used in the specification and claims indicates at least one of the connected objects. For example, A and / or B indicates three cases: A only, B only, and both A and B.

[0029] In the embodiments of the present disclosure, terms such as "exemplary" or "for example" are used to provide an example, illustration, or explanation. Any embodiment or design described with "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as preferred or advantageous over other embodiments or design options. Where appropriate, terms such as "exemplary" or "for example" are used with the purpose of presenting related concepts in a concrete manner.

[0030] The techniques described in this specification are not limited to fifth-generation mobile communication (5G (5th-generation)) systems and subsequent evolved communication systems, and are not limited to LTE / LTE evolution (LTE-Advanced (LTE-A)) systems, but may be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems.

[0031] The terms "system" and "network" are often used interchangeably. A CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. A TDMA system may implement a radio technology such as Global System for Mobile Communication (GSM). An OFDMA system may implement a radio technology such as UltraMobile Broadband (UMB), Evolution-UTRA (E-UTRA), IEEE 802.11 ((Wi-Fi)), IEEE 802.16 ((WiMAX)), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). Higher levels of LTE such as LTE and LTE-A are newer UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP®). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above, as well as other systems and radio technologies.

[0032] Hereinafter, the embodiments of the present disclosure will be introduced with reference to the drawings. The cell reselection method and device according to some embodiments of the present disclosure are applicable to a wireless communication system. Referring to FIG. 1, a diagram showing an architecture of a wireless communication system according to some embodiments of the present disclosure is shown. As shown in FIG. 1, the wireless communication system includes a first network device 10, a second network device 11, and a terminal 12. The terminal 12 (also described as UE 12) can communicate with the first network device 10 and the second network device 11 (transmit signaling and data). In practical application, the connection between each of the above devices may be a wireless connection. In order to easily show the connection relationship between each of the devices intuitively, the connection relationship is shown by a solid line in FIG. 1.

[0033] The first network device 10 and the second network device 11 according to some embodiments of the present disclosure are base stations. The base station may be a commonly used base station, an evolved node base station (eNB), or a network device of a 5G system (e.g., a next generation node base station (gNB)) or a transmission and reception point (TRP).

[0034] In some embodiments of the present disclosure, the terminal 12 may be a mobile phone, a tablet PC, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a wearable device, or an in-vehicle device.

[0035] Referring to Fig. 2, some embodiments of the present disclosure provide a cell reselection method, which is performed by a terminal, and specifically includes step 201.

[0036] Step 201: Receive a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0037] In some embodiments of the present disclosure, the frequency priority indicates the degree to which a particular frequency is preferentially used for cell reselection. For example, the frequency priority includes one or more frequencies and the priority of the frequencies. Here, the priority is indicated by a numerical value. For example, the larger the numerical value, the higher the priority, but the smaller the numerical value, the lower the priority.

[0038] For example, the frequency priority includes priority 2 (high) for the 1.8 GHz frequency and priority 1 (low) for the 1.9 GHz frequency, i.e., cell reselection is performed preferentially using the 1.8 GHz frequency.Further, for example, the frequency priority includes priority 2 (high) for the 4.9 GHz frequency and priority 1 (low) for the 2.6 GHz frequency, i.e., cell reselection is performed preferentially using the 4.9 GHz frequency.

[0039] Note that the above frequency priority levels are merely examples, and in some embodiments of the present disclosure, the frequency priority levels are not specifically limited.

[0040] In some embodiments of the present disclosure, the frequency priority reason is to indicate the reason for setting the frequency priority, such as load balancing, slicing, or MR-DC.

[0041] In some embodiments of the present disclosure, the information on whether frequency priority is valid is intended to indicate information related to whether frequency priority is valid, such as load balancing, slicing, or MR-DC.

[0042] In some embodiments of the present disclosure, the validity condition of the frequency priority is to indicate a condition for whether the frequency priority is valid, such as load balancing, slicing, or MR-DC.

[0043] In some embodiments of the present disclosure, the index information of frequency priority is for indicating an identifier of frequency priority, for example, the frequency priority of f1 is 1, the frequency priority of f2 is 2, the corresponding frequency priority index information is index 0, the frequency priority of f1 is 2, the frequency priority of f2 is 1, the corresponding frequency priority index information is index 1.

[0044] In some embodiments of the present disclosure, a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority are selectively received from a network device via a system message or dedicated signaling.

[0045] In some embodiments of the present disclosure, when the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority are received by a broadcasted system message, the method further includes maintaining the serving cell of the terminal as it is as a condition to be satisfied for performing cell reselection based on the frequency priority.

[0046] Furthermore, when the terminal moves to another cell, i.e., when the visiting cell changes, the broadcasted frequency priority becomes invalid, and the terminal reads the frequency priority in the system message of the new visiting cell and performs cell reselection based on the frequency priority.

[0047] In some embodiments of the present disclosure, one frequency priority reason, validity information, validity condition information, or index information may correspond to one or more frequency priorities, and if the priority reason is satisfied, the terminal may use the frequency priority set based on the priority reason.

[0048] For example, the frequency priority reason, validity information or validity condition information includes one or more of the following: (1) Load balancing The frequency priority is set with consideration of network load balancing, for example, the network sets a higher priority to a time-division duplex (TDD) frequency with a relatively large bandwidth in order to bear more users and balance the load. (2) Types of slices (or slices for short) supported by the device Frequency priority is set taking into account the type of slices supported by the terminal. For example, if a terminal supports Ultra Reliable & Low Latency Communication (URLLC) sliced ​​service, the network sets a higher priority for frequencies that support URLLC sliced ​​service, and allows the terminal to preferentially stay on frequencies that support URLLC sliced ​​service. (3) MR-DC frequency band combinations configured in the network and / or MR-DC frequency band combinations supported by the terminal (or abbreviated as MR-DC) The frequency priority is set taking into consideration the combination of MR-DC frequency bands set by the network and the combination of MR-DC frequency bands supported by the terminal. For example, if the network sets the combination of NSA frequency bands of LTE 1.8GHz + NR 2.6GHz and this terminal also supports this combination of MR-DC frequency bands, the network sets the priority of the 1.8GHz LTE frequency higher and allows the MR-DC terminal to preferentially stay on the 1.8GHz frequency. If other frequencies are preferentially stayed on, the MR-DC terminal will be able to set up after switching to the 1.8GHz frequency after entering a connected state, which will result in extra switching costs and delays.

[0049] For example, the priority of the 2.6 GHz frequency is 2 (high), the priority of the 4.9 GHz frequency is 1 (low), and the frequency priority reason is load balancing.

[0050] For example, the priority of the frequency 4.9 GHz is 2 (high), the priority of the frequency 2.6 GHz is 1 (low), and the frequency priority reason is slicing.

[0051] For example, the priority of the frequency 1.8 GHz is 2 (high), the priority of the frequency 1.9 GHz is 1 (low), and the frequency priority reason is MR-DC.

[0052] In some embodiments of the present disclosure, the method illustrated in FIG. 2 further includes determining a frequency priority to be used for cell reselection based on capability information of the terminal and / or instruction information sent from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

[0053] Optionally, the indication information indicates one or more of the following: (1) Whether MR-DC is supported in the own cell and / or neighboring cells; (2) The types of slices supported in the own cell and / or neighboring cells; (3) whether a given dedicated network is supported in the own cell and / or neighboring cells; (4) the type of dedicated network supported in the own cell and / or neighboring cells; (5) Frequency priority information used in the terminal.

[0054] Below, we will introduce a method for determining frequency priority used during cell reselection. Method 1: If the frequency priority reason, or the information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, the frequency priority corresponding to the frequency priority information is determined as the frequency priority to be used for the cell reselection. Here, the frequency priority information used in the terminal may, specifically, when the network sets multiple frequency priority information in the manner of broadcast or dedicated signaling, instruct the terminal as to which specific frequency priority to use for cell reselection by using this frequency priority information. Method 2: When the frequency priority reason or the valid condition information of the frequency priority indicates a slice, the terminal receives the types of slices supported in the own cell and / or a neighboring cell, and the terminal supports a slice or attempts to start a slice-related service, the frequency priority corresponding to the slice is determined to be the frequency priority to be used for the cell reselection. Method 3: When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or a neighboring cell, or when the terminal receives the type of dedicated network supported in the own cell and / or a neighboring cell, and the terminal is located within the predetermined dedicated network, the frequency priority corresponding to the predetermined dedicated network is determined as the frequency priority to be used for the cell reselection. Method 4: When the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, the terminal receives the types of slices supported in the own cell and / or neighboring cell, and the terminal does not support the slice, the frequency priority corresponding to the load balancing or default is determined as the frequency priority to be used for the cell reselection. Method 5: When the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or a neighboring cell, and the terminal does not support the MR-DC, the frequency priority corresponding to the load balancing or default is determined as the frequency priority to be used for the cell reselection. Method 6: When the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, and the terminal does not receive the instruction information, the frequency priority corresponding to the load balancing or default is determined as the frequency priority to be used for the cell reselection.

[0055] In some embodiments of the present disclosure, the frequency priority used for cell reselection is determined in different manners depending on whether the terminal has received frequency priority activation information transmitted from a network device.

[0056] Method 1: When frequency priority activation information transmitted from a network device is received, the frequency priority to be used for cell reselection is determined based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

[0057] For example, in step A, the terminal receives frequency priority and frequency priority index information transmitted from the network. For example, the frequency priority of f1 is 1, the frequency priority of f2 is 2, and the corresponding frequency priority index information is index 0, the frequency priority of f1 is 2, the frequency priority of f2 is 1, and the corresponding frequency priority index information is index 1. In step B, the terminal receives frequency priority activation information transmitted from the network. For example, if the received frequency priority activation information is index 1, it indicates that the terminal uses the frequency priority of index 1 as the frequency priority for cell reselection, that is, (frequency priority 2 for f1, frequency priority 1 for f2).

[0058] Method 2: When frequency priority activation information transmitted from a network device is not received, a default frequency priority is adopted as the frequency priority for cell reselection.

[0059] For example, in step A, the terminal receives frequency priority and frequency priority index information transmitted from the network. For example, the frequency priority of f1 is 1, the frequency priority of f2 is 2, and the corresponding frequency priority index information is index 0. In step B, if the terminal does not receive frequency priority activation information transmitted from the network, the terminal adopts the default frequency priority as the frequency priority for cell reselection.

[0060] In some embodiments of the present disclosure, the method illustrated in FIG. 2 further includes receiving slice information from the network device, the slice information including information of slices supported in one or more frequencies or cells.

[0061] For example, the slice information may include that URLLC slices are supported at 4.9 GHz and that eMBB slices are supported at 2.6 GHz. Or, the slice information may include that URLLC slices are supported at 4.9 GHz.

[0062] The above cells include a serving cell and / or a neighboring cell.

[0063] In some embodiments of the present disclosure, the method shown in FIG. 2 further includes receiving MR-DC information of one or more cells from the network device, where the MR-DC information includes one or more of the following: (1) whether a given wireless communication technology (e.g., 5G) or MR-DC is supported in the cell; (2) the frequencies of other RATs of MR-DC supported in the cell; (3) The combination of MR-DC frequency bands supported by the cell.

[0064] The above cells include a serving cell and / or a neighboring cell.

[0065] In some embodiments of the present disclosure, the method shown in FIG. 2 further includes receiving a validity time of the frequency priority from the network device, and suspending the frequency priority if a condition for determining the frequency priority as the frequency priority to be used for the cell reselection is not satisfied until the validity time of the frequency priority expires or until a new frequency priority is received.

[0066] Here, the effective time is a certain point or period. For example, the fact that the effective time of the frequency priority has not expired indicates that the frequency priority can be used, and the fact that the effective time of the frequency priority has expired indicates that the frequency priority cannot be used. For example, the frequency priority set by the dedicated signaling has an effective time, and within the effective time, the terminal performs cell reselection using the frequency priority in the dedicated signaling, but after the effective time expires, the dedicated frequency priority is no longer effective, so the terminal performs cell reselection using the frequency priority in the broadcast of the system message.

[0067] In some embodiments of the present disclosure, the method illustrated in FIG. 2 further includes transmitting information of the terminal to the network device before receiving a frequency priority and a frequency priority reason from the network device; The terminal information includes one or more of the following: (1) Information about slices supported by the terminal, such as a list of slices supported by the terminal; (2) A combination of MR-DC frequency bands supported by the terminal.

[0068] In some embodiments of the present disclosure, an appropriate frequency priority can be selected based on frequency priority reasons, validity information, validity conditions, or index information to perform cell reselection, thereby satisfying the flexibility of various terminal types (e.g., 5G terminals) and various services.

[0069] In some embodiments of the present disclosure, an appropriate frequency priority can be selected based on frequency priority reasons, validity information, validity conditions, or index information to perform cell reselection, thereby satisfying the flexibility of various terminal types (e.g., 5G terminals) and various services.

[0070] Referring to Figure 3, some embodiments of the present disclosure further provide a cell reselection method, which is performed by a network device and includes step 301.

[0071] Step 301: Transmit a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0072] For example, by a broadcast message or dedicated signaling, a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority is transmitted to the terminal.

[0073] In some embodiments of the present disclosure, the method illustrated in FIG. 3 further includes sending the indication information to the terminal. The instruction information indicates one or more of the following: Whether MR-DC is supported in the own cell and / or neighboring cells; Slice types supported in own cell and / or neighboring cells; Whether a given dedicated network is supported in the own cell and / or in neighboring cells; type of dedicated networks supported in the own cell and / or neighboring cells; Frequency priority information used in the terminal.

[0074] In some embodiments of the present disclosure, the method illustrated in FIG. 3 further includes transmitting slice information to a terminal, the slice information including information of slices supported in one or more frequencies or cells.

[0075] In some embodiments of the present disclosure, the method illustrated in FIG. 3 further includes sending MR-DC information of one or more cells to the terminal, where the MR-DC information includes one or more of the following: (1) Whether the cell supports 5G or MR-DC; (2) Frequencies of other RATs of MR-DC supported in the cell; (3) The combination of MR-DC frequency bands supported by the cell.

[0076] In some embodiments of the present disclosure, the method illustrated in FIG. 3 further includes transmitting a validity time of the frequency priority to the terminal.

[0077] In some embodiments of the present disclosure, the method illustrated in FIG. 3 further includes receiving information of the terminal, the information of the terminal including one or more of the following: (1) Information on slices supported by the terminal; (2) A combination of MR-DC frequency bands supported by the terminal.

[0078] In some embodiments of the present disclosure, an appropriate frequency priority can be selected based on frequency priority reasons, cell-related information, and terminal-related information to perform cell reselection, thereby satisfying the flexibility of various terminal types (e.g., 5G terminals) and various services.

[0079] Hereinafter, the flow of cell reselection in some embodiments of the present disclosure will be introduced through Example 1, Example 2, Example 3, and Example 4.

[0080] Example 1 The network transmits frequency priorities including priority 2 (high) for frequency 4.9 GHz and priority 1 (low) for frequency 2.6 GHz in dedicated signaling, and the frequency priority reasons include the types of slices supported by the terminal.

[0081] The slice information sent from the network includes that URLLC slices are supported at 4.9 GHz and eMBB slices are supported at 2.6 GHz.

[0082] A terminal that supports URLLC performs cell reselection using frequency priority transmitted by dedicated signaling.

[0083] When this URLLC terminal moves to another cell, the slice information of the own cell transmitted from this cell includes that eMBB services are supported in both 4.9 GHz and 2.6 GHz (the slice information of this cell does not include slices supported by the terminal).

[0084] In this case, if the URLLC terminal finds that the slices supported by the terminal are not included in the slice information of this cell, it does not perform cell reselection based on the dedicated frequency priority transmitted from the network, but performs cell reselection using the frequency priority in the broadcast message.

[0085] Example 2 The network transmits frequency priorities including priority 2 (high) for frequency 4.9 GHz and priority 1 (low) for frequency 2.6 GHz in dedicated signaling, and the frequency priority reasons include the types of slices supported by the terminal.

[0086] The slice information sent from the network includes that URLLC slices are supported at 4.9 GHz and eMBB slices are supported at 2.6 GHz.

[0087] A terminal that supports URLLC performs cell reselection using frequency priority transmitted by dedicated signaling.

[0088] When this URLLC terminal moves to another cell, the slice information of the own cell transmitted from this cell includes that eMBB services are supported at both 4.9 GHz and 2.6 GHz, and the slice information of the neighboring cell transmitted includes that URLLC slices are supported at 4.9 GHz and eMBB slices are supported at 2.6 GHz.

[0089] In this case, when the URLLC terminal finds that a URLLC slice is included in the slice information, it continues to perform cell reselection using the frequency priority transmitted by the network in dedicated signaling.

[0090] Example 3 The network transmits frequency priorities including priority 2 (high) for frequency 1.8 GHz and priority 1 (low) for frequency 1.9 GHz via dedicated signaling, and the frequency priority reasons include the MR-DC frequency band combinations configured by the network and / or the MR-DC frequency band combinations supported by the terminal.

[0091] The MR-DC information transmitted from the network includes that 5G or MR-DC is supported, and that the supported MR-DC frequency band combination is 1.8 GHz (LTE) + 2.6 GHz (NR).

[0092] A terminal supporting 1.8GHz (LTE) + 2.6GHz (NR) MR-DC performs cell reselection using frequency priority transmitted by dedicated signaling when both the 1.8GHz LTE and 2.6GHz NR measurement results are higher than a certain threshold.

[0093] When the terminal moves to another cell and the MR-DC information of the cell includes that 5G or MR-DC is not supported, the terminal performs cell reselection using the frequency priority in the broadcast message.

[0094] Example 4 The network transmits a first frequency priority in a broadcast message, the first frequency priority including priority 2 (high) for frequency 4.9 GHz and priority 1 (low) for frequency 2.6 GHz, where the frequency priority reason includes the type of slice supported by the terminal, and at the same time transmits a second frequency priority including priority 2 (high) for frequency 2.6 GHz and priority 1 (low) for frequency 4.9 GHz, where the frequency priority reason is load balancing.

[0095] The slice information sent from the network includes that URLLC slicing is supported at 4.9 GHz.

[0096] A terminal that supports URLLC performs cell reselection using frequency priority, which is the type of slice supported by the terminal, as a frequency priority reason, and selects, for example, 4.9 GHz to perform cell reselection.

[0097] A general terminal that does not support URLLC performs cell reselection using a frequency priority that is load balancing as the frequency priority reason, and selects, for example, 2.6 GHz to perform cell reselection.

[0098] When the terminal moves to another cell, i.e., when the visiting cell changes, the broadcasted frequency priority is no longer valid, so the terminal reads the frequency priority in the system message of the new visiting cell and performs cell reselection based on the frequency priority.

[0099] If a URLLC terminal finds that the slices supported by the terminal are not included in the slice information of this cell, it does not perform cell reselection based on the frequency priority transmitted in the dedicated signaling, but performs cell reselection using the frequency priority in the broadcast message.

[0100] Referring to FIG. 4, some embodiments of the present disclosure further provide a terminal. This terminal 400 includes a first receiving module 401 for receiving a frequency priority, a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0101] In some embodiments, the terminal 400 further includes a first determination module for determining a frequency priority to be used for cell reselection based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

[0102] Optionally, the instruction information includes: Whether MR-DC is supported in the own cell and / or neighboring cells; The types of slices supported in the own cell and / or neighboring cells; Whether a given dedicated network is supported in the own cell and / or in the neighboring cells; The type of dedicated networks supported in the own cell and / or in neighboring cells; Frequency priority information used in the terminal; Specify one or more of the following.

[0103] In some embodiments, the first determination module is further used to: If the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, the frequency priority corresponding to the frequency priority information is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates MR-DC, the terminal receives information that MR-DC is supported in the own cell and / or a neighboring cell, and MR-DC is supported in the terminal, the frequency priority corresponding to the MR-DC is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates a slice, the terminal receives the types of slices supported in the own cell and / or a neighboring cell, and the terminal supports a slice or intends to start a slice-related service, the frequency priority corresponding to the slice is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or a neighboring cell, or when the terminal receives the type of dedicated network supported in the own cell and / or a neighboring cell and the terminal is located within the predetermined dedicated network, the frequency priority corresponding to the predetermined dedicated network is determined to be the frequency priority to be used for the cell reselection. If the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, and the terminal receives the types of slices supported in the own cell and / or neighboring cell, and the terminal does not support the slice, the frequency priority corresponding to the load balancing or default is determined as the frequency priority to be used for the cell reselection. If the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or a neighboring cell, and the terminal does not support the MR-DC, the frequency priority corresponding to the load balancing or default is determined to be the frequency priority to be used for the cell reselection. If the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, and the terminal has not received the indication information, the frequency priority corresponding to the load balancing or default is determined to be the frequency priority to be used for the cell reselection.

[0104] In some embodiments, when terminal 400 receives frequency priority activation information transmitted from a network device, it determines a frequency priority to be used for cell reselection based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority, and when it does not receive frequency priority activation information transmitted from a network device, it further includes a second determination module for adopting a default frequency priority as the frequency priority for cell reselection.

[0105] In some embodiments, the first receiving module 401 is further used to receive a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority from a network device by a broadcast message or dedicated signaling.

[0106] In some embodiments, the terminal 400 further includes a second receiving module for receiving a valid time of the frequency priority from the network equipment. If the conditions for determining the frequency priority as the frequency priority to be used for the cell reselection are not satisfied, the frequency priority is suspended until the validity time of the frequency priority expires or until a new frequency priority is received.

[0107] In some embodiments, the terminal 400 further includes a first sending module for sending the capability information of the terminal to the network device. The capability information of the terminal is Information on slices supported by the terminal; A combination of MR-DC frequency bands supported by the terminal; Contains one or more of the following:

[0108] A terminal according to some embodiments of the present disclosure can implement the above embodiment shown in Figure 2. Because the implementation principles and technical effects are similar, this embodiment will not be described repeatedly here.

[0109] 5, some embodiments of the present disclosure further provide a terminal. The terminal 500 includes a first transceiver 501 and a first processor 502. The first transceiver 501 is used to receive a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0110] In some embodiments, the first processor 502 is used to determine a frequency priority to be used for cell reselection based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

[0111] Optionally, the instruction information includes: Whether MR-DC is supported in the own cell and / or neighboring cells; The types of slices supported in the own cell and / or in neighboring cells; Whether a given dedicated network is supported in the own cell and / or in the neighboring cells; The type of dedicated networks supported in the own cell and / or in neighboring cells; Frequency priority information used in the terminal; Specify one or more of the following.

[0112] In some embodiments, the first determination module is further used to: If the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, the frequency priority corresponding to the frequency priority information is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates MR-DC, the terminal receives information that MR-DC is supported in the own cell and / or a neighboring cell, and MR-DC is supported in the terminal, the frequency priority corresponding to the MR-DC is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates a slice, the terminal receives the types of slices supported in the own cell and / or a neighboring cell, and the terminal supports a slice or intends to start a slice-related service, the frequency priority corresponding to the slice is determined to be the frequency priority to be used for the cell reselection. When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or a neighboring cell, or when the terminal receives the type of dedicated network supported in the own cell and / or a neighboring cell and the terminal is located within the predetermined dedicated network, the frequency priority corresponding to the predetermined dedicated network is determined to be the frequency priority to be used for the cell reselection. If the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, and the terminal receives the types of slices supported in the own cell and / or neighboring cell, and the terminal does not support the slice, the frequency priority corresponding to the load balancing or default is determined as the frequency priority to be used for the cell reselection. If the frequency priority reason or the valid condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or a neighboring cell, and the terminal does not support the MR-DC, the frequency priority corresponding to the load balancing or default is determined to be the frequency priority to be used for the cell reselection. If the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, and the terminal has not received the indication information, the frequency priority corresponding to the load balancing or default is determined to be the frequency priority to be used for the cell reselection.

[0113] In some embodiments, when the first processor 502 receives frequency priority activation information transmitted from a network device, it further determines a frequency priority to be used for cell reselection based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or valid condition information for the frequency priority, or index information for the frequency priority, and when it does not receive frequency priority activation information transmitted from a network device, it is used to adopt a default frequency priority as the frequency priority for cell reselection.

[0114] In some embodiments, the first transceiver 501 is further used to receive a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device by a broadcast message or dedicated signaling.

[0115] In some embodiments, the first transceiver 501 is further adapted to receive a validity time of the frequency priority from the network device. If the conditions for determining the frequency priority as the frequency priority to be used for the cell reselection are not satisfied, the frequency priority is suspended until the validity time of the frequency priority expires or until a new frequency priority is received.

[0116] In some embodiments, the first transceiver 501 is further used to transmit capability information of the terminal to the network device. The capability information of the terminal is Information on slices supported by the terminal; A combination of MR-DC frequency bands supported by the terminal; Contains one or more of the following:

[0117] A terminal according to some embodiments of the present disclosure can implement the above embodiment shown in Figure 2. Because the implementation principles and technical effects are similar, this embodiment will not be described repeatedly here.

[0118] Referring to FIG. 6, some embodiments of the present disclosure further provide a network device. This network device 600 includes a second transmitting module 601 for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to a terminal. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0119] In some embodiments, the second transmitting module 601 is further used for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to the terminal by a broadcast message or dedicated signaling.

[0120] A network device according to some embodiments of the present disclosure can implement the above embodiment shown in Figure 3. Because the implementation principles and technical effects are similar, this embodiment will not be described repeatedly here.

[0121] 7, some embodiments of the present disclosure further provide a network device 700. The network device 700 includes a second processor 701 and a second transceiver 702. The second transceiver 701 is used to transmit a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to a terminal. Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority, are used for cell reselection by the terminal.

[0122] In some embodiments, the second processor 701 is further used for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to the terminal by a broadcast message or dedicated signaling.

[0123] A network device according to some embodiments of the present disclosure can implement the above embodiment shown in Figure 3. Because the implementation principles and technical effects are similar, this embodiment will not be described repeatedly here.

[0124] Please refer to Fig. 8, which is a structural diagram of a communication device applicable to some embodiments of the present disclosure. As shown in Fig. 8, the communication device 800 includes a processor 801 responsible for managing a bus architecture and normal processing, a transceiver 802, a memory 803 capable of storing data used by the processor 801 to perform operations, and a bus interface.

[0125] In one embodiment of the present disclosure, the communication device 800 further includes a computer program stored in the memory 803 and executable by the processor 801. When the computer program is executed by the processor 801, it realizes the steps of the method shown in FIG. 2 or FIG. 3 above.

[0126] In Fig. 8, the bus architecture includes any number of interconnecting buses and bridges, specifically connecting various types of circuits, such as one or more processors, such as processor 801, and memory, such as memory 803. The bus architecture may also connect various types of other circuits, such as peripheral equipment, regulators, power management circuits, etc., all of which are known in the art and will not be described further herein. The bus interface provides an interface. The transceiver 802 may be multiple components, i.e., includes a transmitter and a receiver, and is provided as a unit that communicates with various types of other devices over a transmission medium.

[0127] A communication device according to some embodiments of the present disclosure can implement the above embodiment of the method shown in Figure 2 or Figure 3. Because the implementation principles and technical effects are similar, this embodiment will not be described repeatedly here.

[0128] The steps of the method or algorithm described in connection with the disclosure of the present disclosure may be implemented in the form of hardware or software instructions executed by a processor. The software instructions are configured with corresponding software modules. The software modules may be located in a RAM, a flash memory, a ROM, an EPROM, an EEPROM, a register, a hard disk, a mobile hard disk, a read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor. Thus, the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may be a component part of the processor. The processor and the storage medium may be located in an ASIC. The ASIC may also be located in the core network interface device. Of course, the processor and the storage medium may be located in the core network interface device as separate components.

[0129] In one or more of the above examples, those skilled in the art can recognize that the functions described in this disclosure can be realized by hardware, software, firmware, or a combination thereof. If realized in software, these functions are stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media. Communication media include any medium that transmits a computer program from one place to another. Storage media are any available media that can be accessed by a general-purpose or special-purpose computer.

[0130] The specific embodiments described above further describe the objectives, technical means and effects of the present disclosure. Note that the above description is merely a specific embodiment of the present disclosure and is not intended to limit the scope of protection of the present disclosure. Any modifications, equivalent replacements and improvements made based on the technical means of the present disclosure should be included in the scope of protection of the present disclosure.

[0131] It will be appreciated by those skilled in the art that the embodiments of the present disclosure may be provided as a method, an apparatus, or a computer program product. Thus, the embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the embodiments of the present disclosure may take the form of a computer program product embodied in one or more computer usable storage mediums (including, but not limited to, magnetic disk memories, CD-ROMs, optical memories, etc.) that contain computer usable program code.

[0132] It is understood that the embodiments described herein can be realized in hardware, software, firmware, middleware, microcode, or a combination thereof. In the case of a hardware realization, the modules, units, sub-modules, sub-units, etc. may be implemented with one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field-Programmable Gate Arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0133] The embodiments of the present disclosure are described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be realized by computer program commands. These computer program commands are provided to a processor of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device to form an apparatus for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams by the instructions executed by the processor of the computer or other programmable data processing device.

[0134] These computer program instructions may be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, and the instructions stored in the computer readable memory form a product that includes a command apparatus that realizes the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0135] These computer program instructions may be loaded into a computer or other programmable data processing device and cause the computer or other programmable data processing device to execute a series of operational steps to form a computer-implemented process, the commands executed on the computer or other programmable data processing device providing steps for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0136] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and equivalent techniques, the present disclosure is intended to include these modifications and variations.

Claims

1. A cell reselection method applied to a terminal, comprising: Receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority from a network device; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority are used for cell reselection by a terminal, The cell reselection method further includes determining which frequency priority among a plurality of set frequency priorities to use at the time of cell reselection, based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

2. The instruction information is Whether MR-DC is supported in the own cell and / or neighboring cells; The types of slices supported in the own cell and / or in neighboring cells; Whether a given dedicated network is supported in the own cell and / or in the neighboring cells; The type of dedicated networks supported in the own cell and / or in neighboring cells; The method of claim 1 , further comprising indicating one or more of:

3. Determining a frequency priority to be used for cell reselection based on the capability information of the terminal and / or the instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority, When the frequency priority reason, or the information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, determining a frequency priority corresponding to the frequency priority information as a frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates MR-DC, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and MR-DC is supported in the terminal, determining the frequency priority corresponding to the MR-DC as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a slice, the terminal receives the type of slice supported in the own cell and / or the neighboring cell, and the terminal supports the slice or intends to start a slice-related service, determining the frequency priority corresponding to the slice as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or the neighboring cell, or when the terminal receives the type of the dedicated network supported in the own cell and / or the neighboring cell and the terminal is located in the predetermined dedicated network, determining the frequency priority corresponding to the predetermined dedicated network as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives the type of slices supported in the own cell and / or the neighboring cell, and the terminal does not support the slice, determining the frequency priority corresponding to the load balancing or default as the frequency priority to be used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and the terminal does not support the MR-DC, determining the frequency priority corresponding to the load balancing or default as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, and the terminal does not receive the instruction information, determining the frequency priority corresponding to the load balancing or default as a frequency priority to be used for the cell reselection; The method of claim 2 , comprising one or more of:

4. The method according to claim 1, wherein the instruction information includes frequency priority activation information, the method further comprising: When receiving the frequency priority activation information transmitted from a network device, determine a frequency priority to be used for cell reselection based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority; 2. The method of claim 1, further comprising: adopting a default frequency priority as a frequency priority for cell reselection if the frequency priority reason or the frequency priority validity condition information indicates a default and the frequency priority activation information transmitted from a network device has not been received.

5. Receiving the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device, The method of claim 1, comprising receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device by a broadcast message or dedicated signaling.

6. receiving a valid time of the frequency priority from the network device; The method according to claim 1, further comprising suspending the frequency priority if a condition for determining the frequency priority as the frequency priority to be used for the cell reselection is not satisfied until the validity time of the frequency priority expires or until a new frequency priority is received.

7. The method further includes transmitting capability information of the terminal to the network device; The capability information of the terminal is Information on slices supported by the terminal; A combination of MR-DC frequency bands supported by the terminal; The method of claim 1 , comprising one or more of:

8. A cell reselection method applied to a network device, comprising: Transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal; Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority are used for cell reselection by a terminal, A cell reselection method in which which frequency priority to use among a plurality of set frequency priorities during cell reselection is determined based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information for the frequency priority, or index information for the frequency priority.

9. Transmitting the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal, 9. The method according to claim 8, comprising transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority to the terminal by a broadcast message or dedicated signaling.

10. A terminal including a first receiving module for receiving a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority from a network device, Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority are used for cell reselection by a terminal, The terminal determines which frequency priority among a plurality of set frequency priorities to use during cell reselection based on the terminal's capability information and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information for the frequency priority, or index information for the frequency priority. A terminal.

11. The instruction information is Whether MR-DC is supported in the own cell and / or neighboring cells; The types of slices supported in the own cell and / or in neighboring cells; Whether a given dedicated network is supported in the own cell and / or in the neighboring cells; The type of dedicated networks supported in the own cell and / or in neighboring cells; The terminal according to claim 10, which indicates one or more of the following:

12. Determining a frequency priority to be used for cell reselection based on the capability information of the terminal and / or the instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority, When the frequency priority reason, or the information on whether the frequency priority is valid, or the validity condition information of the frequency priority, or the index information of the frequency priority indicates frequency priority information used in the terminal, determining a frequency priority corresponding to the frequency priority information as a frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates MR-DC, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and MR-DC is supported in the terminal, determining the frequency priority corresponding to the MR-DC as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a slice, the terminal receives the type of slice supported in the own cell and / or the neighboring cell, and the terminal supports the slice or intends to start a slice-related service, determining the frequency priority corresponding to the slice as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates a predetermined dedicated network, and the terminal receives that the predetermined dedicated network is supported in the own cell and / or the neighboring cell, or when the terminal receives the type of the dedicated network supported in the own cell and / or the neighboring cell and the terminal is located in the predetermined dedicated network, determining the frequency priority corresponding to the predetermined dedicated network as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives the type of slices supported in the own cell and / or the neighboring cell, and the terminal does not support the slice, determining the frequency priority corresponding to the load balancing or default as the frequency priority to be used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, the terminal receives that MR-DC is supported in the own cell and / or the neighboring cell, and the terminal does not support the MR-DC, determining the frequency priority corresponding to the load balancing or default as the frequency priority used for the cell reselection; When the frequency priority reason or the validity condition information of the frequency priority indicates load balancing or default, and the terminal does not receive the instruction information, determining the frequency priority corresponding to the load balancing or default as a frequency priority to be used for the cell reselection; The terminal of claim 11, comprising one or more of the following:

13. The instruction information includes frequency priority activation information, and the terminal: When receiving the frequency priority activation information transmitted from a network device, determine a frequency priority to be used for cell reselection based on the frequency priority activation information and the frequency priority reason, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority; 11. The terminal according to claim 10, further comprising: adopting a default frequency priority as a frequency priority for cell reselection when the frequency priority reason or the frequency priority validity condition information indicates a default and the frequency priority activation information transmitted from a network device is not received.

14. Receiving the frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority from a network device, The terminal according to claim 10, further comprising receiving, from a network device, a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority, by a broadcast message or dedicated signaling.

15. A network device including a second transmission module for transmitting a frequency priority and a frequency priority reason corresponding to the frequency priority, or information on whether the frequency priority is valid, or valid condition information of the frequency priority, or index information of the frequency priority to a terminal, Here, the frequency priority, the frequency priority reason, or information on whether the frequency priority is valid, or the validity condition of the frequency priority, or the index information of the frequency priority are used for cell reselection by a terminal, A network device in which which frequency priority to use among a plurality of set frequency priorities during cell reselection is determined based on capability information of the terminal and / or instruction information transmitted from a network device, and the frequency priority reason, or information on whether the frequency priority is valid, or validity condition information of the frequency priority, or index information of the frequency priority.

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