WO2023202206A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2023202206A1
WO2023202206A1 PCT/CN2023/077262 CN2023077262W WO2023202206A1 WO 2023202206 A1 WO2023202206 A1 WO 2023202206A1 CN 2023077262 W CN2023077262 W CN 2023077262W WO 2023202206 A1 WO2023202206 A1 WO 2023202206A1
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WO
WIPO (PCT)
Prior art keywords
threshold
message
network element
terminal device
communication method
Prior art date
Application number
PCT/CN2023/077262
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English (en)
French (fr)
Inventor
强鹂
王刚
何艺
李娇娇
刘南南
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of WO2023202206A1 publication Critical patent/WO2023202206A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and device.
  • the terminal device Before a terminal device accesses a cell, the terminal device needs to select a public land mobile network and a cell in the public land mobile network.
  • the public land mobile network that the terminal device accesses is determined based on the public land mobile network priority, and then a cell with a better channel state is selected from the cells of the public land mobile network based on the second threshold and accesses the cell.
  • Embodiments of the present application provide a communication method and device, which can solve the problems of low reliability of terminal equipment selecting public land mobile networks and/or cells and poor communication quality of terminal equipment, thereby improving the efficiency of terminal equipment selecting public land mobile networks and/or cells.
  • the reliability of the cell and the communication quality of the terminal equipment can solve the problems of low reliability of terminal equipment selecting public land mobile networks and/or cells and poor communication quality of terminal equipment, thereby improving the efficiency of terminal equipment selecting public land mobile networks and/or cells.
  • a communication method which is applied to a terminal device.
  • the communication method includes:
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold, and the second threshold is used for cell selection of the terminal equipment and is not used for public land mobile network selection.
  • the terminal device usually first selects a public land mobile network based on priority, and then selects a cell in the public land mobile network based on a second threshold.
  • the terminal device When the channel status of each cell in the selected public land mobile network is equal to
  • the terminal device When it is relatively poor, the terminal device is likely to be in a "hanging" state of "signaling transmission is successful, but data transmission fails or the data transmission rate is very low". That is, the terminal device restarts based on the above priority rules and the second threshold. If you choose a public land mobile network or community, it is very likely that you will enter this "hanging" state again and be unable to carry out normal data communications.
  • the terminal device can select the public land mobile network and/or cell according to the first threshold, and the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold. , that is, based on the actual requirement that data transmission has higher channel status requirements than signaling transmission, the terminal equipment can select the channel status of the included cell when selecting a public land mobile network.
  • public land mobile network with data transmission requirements and then select a cell in the public land mobile network to avoid the above-mentioned "hanging" state, or reduce the probability of the above-mentioned "hanging” state, thereby improving the terminal equipment's choice of public land mobile network network and cell reliability.
  • the terminal equipment can select the public land mobile network and the cell according to the first threshold.
  • the channel status corresponding to the first threshold is better than the channel status corresponding to the second threshold.
  • the terminal equipment can access the cell with better channel status.
  • the terminal equipment and Cells can transmit data and signaling based on channels with better communication quality, thereby improving the communication quality of terminal equipment.
  • obtaining the first threshold may include: determining the first threshold based on the first parameter, determining the channel state corresponding to the actual channel state reaching the first threshold, and selecting the public land mobile network and/or corresponding to the actual channel state. or cell transmission data.
  • the first parameter may include a baseline value, a step size, a maximum number of steps and/or a boundary threshold.
  • the baseline value is the initial value of the first threshold
  • the step length and the number of steps are used to determine the change amount of the first threshold
  • the maximum number of steps is is the maximum value of the number of steps
  • the boundary threshold is the maximum or minimum value of the first threshold
  • the step length is the minimum value of the change of the first threshold.
  • the first step number is determined based on the baseline value and gradually increases the number of steps. threshold until the communication quality in the channel state corresponding to the first threshold can reach the expected value.
  • the communication quality corresponding to the actual channel state can reach the above expected value to meet the data transmission requirements of the terminal device.
  • obtaining the first threshold may include: receiving the first threshold or the configuration information of the first threshold from the first network element.
  • the first network element may include an access network device or a core network element.
  • the first network element may be an access network device, the first threshold or the configuration information of the first threshold may be carried in the first message, and the first message may be a system message.
  • the access network device can send the first threshold or the configuration information of the first threshold to each terminal device in the form of a broadcast system message, which can reduce the number of signaling interactions between the terminal device and the first network element, and reduce the number of signaling interactions in the cell.
  • the signaling overhead between the first network element and the terminal device improves the efficiency of the terminal device in obtaining the first threshold.
  • the first network element may be an access network device
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first threshold or the configuration information of the first threshold can be customized for different terminal devices.
  • the first threshold or the configuration information of the first threshold can be customized according to the type, location or service type of the terminal device, and the configuration information can be customized through the RRC message. Sent to different terminal devices, the customized first threshold or first threshold configuration information can accurately reflect the data transmission requirements of each terminal device to further improve the accuracy of obtaining the first threshold.
  • the first network element may be a core network element
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the NAS message can customize different first thresholds or configuration information of the first threshold for different terminal devices.
  • the first threshold or the first threshold that matches the terminal device can be customized according to the type, location or service type of the terminal device.
  • a threshold configuration information is sent to different terminal devices through NAS messages.
  • the customized first threshold or first threshold configuration information can accurately reflect the data transmission requirements of each terminal device to further improve the efficiency of obtaining the first threshold. accuracy.
  • the communication method provided in the first aspect may further include: sending feedback information to the first network element.
  • the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the terminal device can inform the first network element that it has successfully received the first message, thereby preventing the first network element from repeatedly sending the first message to the terminal device. information, reducing the signaling overhead of the first network element and improving the communication efficiency between the first network element and the terminal device.
  • the communication method provided in the first aspect may also include: sending capability information.
  • the capability information is used to indicate that the terminal equipment has the ability to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the network side device can customize the first threshold for the terminal device based on the capability information.
  • the first threshold can accurately reflect the data transmission requirements of each terminal device, thereby improving the accuracy of obtaining the first threshold.
  • a communication method which is applied to the first network element.
  • the communication method includes: obtaining a first threshold or configuration information of the first threshold, and the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold.
  • the first threshold is used for the public land mobile network selection and/or cell selection of the terminal equipment
  • the second threshold is used for the cell selection of the terminal equipment and is not used for the public land mobile network selection
  • the configuration information of the first threshold can also be referred to as Parameters related to the first threshold are used to calculate the first threshold, and send the first threshold or the configuration information of the first threshold to the terminal device.
  • the first network element may be an access network device, the first threshold or the configuration information of the first threshold may be carried in the first message, and the first message may be a system message.
  • the first network element may be an access network device
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first network element may be a core network element
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the communication method provided in the second aspect may also include: receiving feedback information.
  • the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the communication method provided in the second aspect may also include: receiving capability information.
  • the capability information is used to indicate that the terminal equipment is capable of performing public land mobile network selection and/or cell selection based on the first threshold.
  • the capability information may come from one or more of the following devices: terminal equipment, access network equipment, or data storage network elements.
  • a communication device which is applied to terminal equipment.
  • the communication device includes: a processing module and a transceiver module.
  • the processing module is used to obtain a first threshold.
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold.
  • the second threshold is used for cell selection of the terminal equipment and is not used for public land mobile network selection.
  • a transceiver module configured to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the processing module may be configured to: determine a first threshold based on a first parameter.
  • the first parameter may include a baseline value, a step size, a maximum number of steps, and/or a boundary threshold.
  • the baseline value is the first threshold.
  • the initial value, step length and number of steps are used to determine the amount of change of the first threshold.
  • the maximum number of steps is the maximum value of the number of steps.
  • the boundary threshold is the maximum or minimum value of the first threshold.
  • the step length is the amount of change of the first threshold. the minimum value.
  • the transceiver module may be used to: determine the channel state corresponding to the actual channel state reaching the first threshold, and select the public land mobile network and/or cell corresponding to the actual channel state to transmit data.
  • the processing module may be configured to: receive the first threshold or the configuration information of the first threshold from the first network element.
  • the first network element may include an access network device or a core network element. Configuration information of a threshold is used to calculate the first threshold.
  • the first network element may be an access network device
  • the first threshold may be carried in the first message
  • the first message may be a system message
  • the first network element may be an access network device
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first network element may be a core network element
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the transceiver module may be configured to: send feedback information to the first network element, where the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the transceiver module may be configured to: send capability information, where the capability information is used to indicate that the terminal device is capable of performing public land mobile network selection and/or cell selection based on the first threshold.
  • a communication device which is applied to the first network element.
  • the communication device includes: a processing module and a transceiver module.
  • the processing module is used to obtain a first threshold
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold
  • the first threshold is used for public land mobile network selection and/or cell selection of the terminal equipment
  • the second The threshold is used for cell selection by the terminal device and not for public land mobile network selection.
  • the transceiver module is used to send the first threshold value to the terminal device.
  • the first network element may be an access network device, the first threshold or the configuration information of the first threshold may be carried in the first message, and the first message may be a system message.
  • the first network element may be an access network device
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first network element may be a core network element
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the transceiver module can also be used to: receive feedback information.
  • the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the transceiver module can also be used to: receive capability information.
  • the capability information is used to indicate that the terminal equipment is capable of performing public land mobile network selection and/or cell selection based on the first threshold.
  • the capability information may come from one or more of the following devices: terminal equipment, access network equipment, or data storage network elements.
  • a communication device in a fifth aspect, includes: a processor, the processor is coupled with a memory. Wherein, the processor is used to execute the computer program stored in the memory, so that the communication device executes any method as provided in the first aspect and any possible design method thereof or as provided in the second aspect and any possible design method thereof. method.
  • a sixth aspect provides a communication device.
  • the communication device includes: a processor and a memory.
  • the memory is used to store computer instructions.
  • the processor executes the computer instructions, the communication device performs the first aspect and any possible design manner thereof or the second aspect and any possible design manner thereof. any of the methods provided.
  • a communication device in a seventh aspect, includes: a processor and an interface circuit. Among them, the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is configured to run code instructions to perform any method provided by the first aspect and any possible design manner thereof, or any method provided by the second aspect and any possible design manner thereof.
  • An eighth aspect provides a communication device including a processor and a transceiver.
  • the transceiver is used for information exchange between the communication device and other communication devices.
  • the processor executes program instructions to perform any method provided by the first aspect and any possible design method thereof or the method provided by the second aspect and any possible design method thereof.
  • the technical effects of the communication device provided in the fifth aspect to the eighth aspect may be referred to the technical effects of the communication method provided in the first aspect and the second aspect, and will not be described again here.
  • a computer-readable storage medium includes a computer program or instructions.
  • the computer program or instructions When the computer program or instructions are run on a computer, the computer is caused to execute the first aspect and any possible design thereof. method or any method provided by the second aspect and any possible design method thereof.
  • a tenth aspect provides a computer program product.
  • the computer program product includes: a computer program or an instruction.
  • the computer program or instruction When the computer program or instruction is run on a computer, it causes the computer to execute the first aspect and any of its possible design methods or the following: Any method provided by the second aspect and any of its possible design methods.
  • Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 3 is a schematic flowchart of determining the first threshold provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram 2 of a communication device provided by an embodiment of the present application.
  • Figure 6 is a schematic third structural diagram of a communication device provided by an embodiment of the present application.
  • WiFi wireless fidelity
  • V2X vehicle to everything
  • D2D device-to-device
  • Internet of Vehicles communication system 4th generation (4G) mobile communication system, such as long term evolution (LTE) system, global interoperability for microwave access (WiMAX) communication systems
  • 5th generation, 5G mobile communication systems, such as new radio (NR) systems
  • 6th generation, 6G mobile communication systems.
  • a terminal device Before a terminal device accesses a cell, it needs to select a public land mobile network (PLMN) and a cell in the public land mobile network to access the cell to transmit data.
  • PLMN public land mobile network
  • the public land mobile network to which the terminal device accesses is determined based on the public land mobile network priority, and then a cell is selected based on the second threshold from among many cells in the public land mobile network and accesses the cell.
  • cell selection can only be performed in the same public land mobile network.
  • the terminal equipment is likely to be in a "hanging" state because "signaling transmission is successful, but data transmission fails or the data transmission rate is very low", even if There are other public land mobile networks with better channel conditions, and cells in other public land mobile networks with better channel conditions cannot be accessed.
  • the terminal device reselects the public land mobile network and cell based on the above priority rules, it is likely to enter this "hanging" state again, unable to perform normal data communication or the communication quality is very poor, resulting in the terminal device selecting The reliability of public land mobile networks and cells is low, and the communication quality of terminal equipment is also very poor.
  • embodiments of the present application provide a communication method and device.
  • a communication system applicable to the embodiments of the present application is first described in detail, taking the communication system shown in FIG. 1 as an example.
  • FIG. 1 is an architectural schematic diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include a first network element and a terminal device.
  • the first network element may include an access network device or a core network element.
  • the access network device can be a device located on the network side of the above-mentioned communication system and has a wireless transceiver function or a network element or a chip or chip system that can be disposed on the device.
  • the access network equipment may include but is not limited to: access points (APs) in wireless fidelity (WiFi) systems, such as home gateways, routers, servers, switches, bridges, etc., evolved nodes B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (BTS) ), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point , TP), etc., can also be 5G, such as gNB in the new radio (NR) system, or
  • the core network element may be a core network element in the mobile communication network.
  • the core network elements may include access and mobility management function (AMF) network elements or operation management and maintenance (operation administration and maintenance) maintenance, OAM) network element.
  • AMF access and mobility management function
  • OAM operation administration and maintenance
  • the above-mentioned terminal device may be a terminal that accesses the above-mentioned communication system and has a wireless transceiver function, or a chip or chip system that may be installed in the terminal.
  • the terminal equipment may also be referred to as a user device, access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communications device, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, or an augmented reality (AR) terminal.
  • VR virtual reality
  • AR augmented reality
  • the terminal device of this application can also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit built into the vehicle as one or more components or units.
  • the vehicle uses the built-in vehicle-mounted module, vehicle-mounted module, Vehicle-mounted components, vehicle-mounted chips or vehicle-mounted units can implement the communication method provided by this application.
  • Figure 1 is only a simplified schematic diagram for ease of understanding, and the communication system may also include other network devices or network elements.
  • other network devices or network elements may include: authentication server function (AUSF) network element, policy control function (PCF) network element or session management function (session management) function, SMF) network elements and other network elements. Not shown in Figure 1.
  • AUSF authentication server function
  • PCF policy control function
  • SMF session management function
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application. This communication method can be applied to communication between the terminal device and the first network element shown in Figure 1.
  • the communication method suitable for the communication system shown in Figure 1 includes the following steps:
  • the terminal device obtains the first threshold.
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold, and the second threshold is used for cell selection of the terminal equipment and is not used for public land mobile network selection.
  • the first threshold may be a value of any parameter describing the channel state.
  • the first threshold may include one or more of the following: reference signal receiving power (RSRP), reference signal receiving quality (RSRP) Reference signal receiving quality (RSRQ), signal to interference plus noise ratio (SINR), available bandwidth, delay and bit error rate and other parameters.
  • RSRP reference signal receiving power
  • RSRP reference signal receiving quality
  • RSS Reference signal receiving quality
  • SINR signal to interference plus noise ratio
  • the channel status represents the communication status, which can be understood as cell quality or communication link status.
  • the value of the parameter describing the channel state can be set to ensure that the channel state corresponding to the first threshold is better than the channel corresponding to the second threshold. state.
  • a weight value can be assigned to each parameter describing the channel state, and a weighting calculation is performed based on the above weight value to obtain a weighting value corresponding to the first threshold and a weighting value corresponding to the second threshold, and the weighting value corresponding to the first threshold and the second threshold are compared. The weight value corresponding to the threshold.
  • weight value corresponding to each parameter describing the channel state can be set according to the actual application scenario, and is not limited here. It can be understood that the higher the value of the parameter that is positively related to the channel state, the better the channel state corresponding to the parameter.
  • parameters that are positively related to channel status may include parameters such as RSRP, RSRQ, SINR, and available bandwidth.
  • the value of the parameter positively related to the channel state corresponding to the first threshold is higher than the value of the parameter positively related to the channel state.
  • the second threshold corresponds to the value of the parameter that is positively related to the channel state.
  • the first threshold is RSRP1
  • the second threshold is RSRP2
  • RSRP1>RSRP2 the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold.
  • the value of a parameter negatively correlated with the channel state means that the lower the value of the parameter, the better the channel state corresponding to the parameter.
  • parameters negatively related to channel status may include parameters such as bit error rate, delay, or packet loss rate.
  • the value of the parameter negatively related to the channel state corresponding to the first threshold is lower than the first threshold.
  • the second threshold corresponds to the value of the parameter negatively related to the channel state. Taking the bit error rate as an example, the first threshold is the first bit error rate, the second threshold is the second bit error rate, and the first bit error rate is less than the second bit error rate, then the channel state corresponding to the first threshold is better than The channel state corresponding to the second threshold.
  • the first threshold or the configuration information of the first threshold can be configured according to the needs of the actual scenario, and the configuration information of the first threshold can be understood as parameters related to the first threshold. For example, if the first threshold or the first threshold configuration information of the same type of terminal equipment is consistent, that is, the first threshold or the first threshold configuration information of all mobile phones can be set to be consistent, or the first threshold or the first threshold of all smart water meters can be set to be consistent.
  • the configuration information of the thresholds should be consistent, or the first thresholds or the configuration information of the first thresholds of all vehicle-mounted devices should be consistent.
  • the first threshold of the terminal equipment in the same PLMN may be set or the configuration information of the first threshold may be consistent. The above only enumerates the setting methods of the first threshold or the configuration information of the first threshold in two different application scenarios, and does not limit the configuration methods of the first threshold or the configuration information of the first threshold.
  • the terminal device can select a cell with a better channel status among various cells in different PLMNs and access it, that is, select a cell with a channel status whose actual channel status reaches the first threshold and access it, Cells whose actual channel status reaches the channel status of the first threshold include cells whose actual channel status is better than or equal to the channel status of the first threshold.
  • the second threshold is used when the terminal equipment selects a PLMN according to the priority of the PLMN, and selects and accesses a cell in the PLMN whose actual channel state reaches the second threshold, that is, the second threshold is only Cell selection for terminal equipment.
  • the terminal device can obtain the first threshold locally or obtain the first threshold from the first network element.
  • the terminal device may obtain the first threshold locally, or calculate the first threshold based on the configuration information of the first network element or the local first threshold.
  • a threshold value may also be received from the first network element.
  • S201 may include the following steps:
  • Step 1 The terminal device determines the first threshold based on the first parameter.
  • the first parameter may include a baseline value, a step size, a maximum number of steps and/or a boundary threshold.
  • the baseline value is the initial value of the first threshold
  • the step length and the number of steps are used to determine the change amount of the first threshold
  • the maximum number of steps is is the maximum value of the number of steps
  • the boundary threshold is the maximum or minimum value of the first threshold
  • the step length is the minimum value of the change of the first threshold.
  • the first parameter is a parameter used by the terminal device to determine the first threshold
  • the configuration information of the first threshold in step 2 below is a parameter used by the terminal device to determine the first threshold received from the first network element.
  • the configuration information of a parameter and the first threshold may be consistent or inconsistent, and are not limited here.
  • the method of configuring the baseline value is not limited here.
  • the baseline value can be configured on the terminal device according to the actual application scenario and stored in the terminal device.
  • the terminal device can obtain the baseline value locally, or the terminal device can also obtain the baseline value from the first network element.
  • the terminal device obtains the configured offset and/or scaling factor and the second threshold from the local or first network element, and the terminal device calculates the baseline value based on the second threshold, offset and/or scaling factor,
  • the offset and scaling factor can be configured according to the actual application scenario. It can be understood that the terminal device may obtain the second threshold or the configuration information of the second threshold locally, or may obtain the second threshold or the configuration information of the second threshold from the first network element.
  • the second threshold or the configuration information of the second threshold may be carried in an access stratum (AS) message or a non-access stratum (AS) message. non access stratum, NAS) message.
  • the above are just examples of several ways to calculate the baseline value based on the offset and/or scaling factor, and do not impose any restrictions on the baseline value.
  • the offset when the first threshold is positively related to the channel state, the offset is greater than 0 and/or the scaling factor is greater than 1. When the first threshold is negatively related to the channel state, the offset is less than 0 and/or the scaling factor is less than 1.
  • step size, maximum number of steps, and boundary threshold in the first parameter can be set according to the actual application scenario, and are not limited here.
  • FIG. 3 is a schematic flowchart of determining the first threshold provided by the embodiment of the present application.
  • step 1 may include the following steps:
  • the terminal device determines whether it has the first parameter.
  • the terminal device obtains the first threshold. For example, when the terminal device has just been powered on, the terminal device receives signaling from the first network element in the communication system regarding obtaining the first threshold, the number of times the terminal device fails to send data reaches a specified number, the data transmission rate of the terminal device is lower than the specified rate, the terminal device When the device is in a designated area and terminal device communication cannot be supported in the area and/or the terminal device needs to initiate a designated service, the terminal device determines to obtain the first threshold.
  • S302 when S301 determines that the first parameter is present, S302 is executed.
  • S303 is executed. The details of S302 and S303 are as follows:
  • the terminal device starts calculating the current first threshold based on the first parameter.
  • the first parameter can be represented by a symbol.
  • p can be used to represent the first threshold
  • m to represent the baseline value
  • l to represent the step size
  • n to represent the number of steps. It should be understood that the first parameter can be described in other ways, which is not limited here.
  • the terminal device exits the process of determining the first threshold.
  • the terminal device executes:
  • the terminal device determines whether the channel state corresponding to the current first threshold meets the communication requirements of the terminal device.
  • S303 is executed.
  • S305 is executed. S305 details are as follows:
  • S305 Determine whether the current number of steps is less than or equal to the maximum number of steps, and/or determine whether the current first threshold is less than or equal to the boundary threshold.
  • S305 is applicable to the situation when the first threshold is positively correlated with the channel state.
  • the boundary threshold is the maximum value of the first threshold.
  • step one is performed. Step one is as follows:
  • Step 1 Determine whether the current number of steps is less than or equal to the maximum number of steps and/or determine whether the current first threshold is greater than or equal to the boundary threshold.
  • step one is applicable to the situation when the first threshold is negatively correlated with the channel state.
  • the boundary threshold is the minimum value of the first threshold.
  • the first threshold when the first threshold is positively correlated with the channel state, when the current number of steps does not satisfy less than or equal to the maximum number of steps and/or it is determined that the current first threshold does not satisfy less than or equal to the boundary threshold, perform S307.
  • the terminal device waits for the scheduled time.
  • the scheduled time can be set according to actual needs, and is not limited here.
  • the terminal device restarts determining the first threshold starting from S301.
  • the determination is based on the baseline value and gradually increases the number of steps.
  • first threshold value until the communication quality (such as data transmission rate, data error rate and data transmission success rate) in the channel state corresponding to the first threshold can reach the expected value.
  • the communication quality corresponding to the actual channel state can reach the above expected value, so as to ensure that the data transmission requirements of the terminal equipment can be met when the terminal equipment communicates with the cell.
  • the determination is based on the baseline value and gradually increases the number of steps. the first threshold until the communication quality (such as data transmission rate, data error rate and data transmission success rate) in the channel state corresponding to the first threshold can reach the expected value.
  • the communication quality corresponding to the actual channel state can reach the above expected value, so as to ensure that the data transmission requirements of the terminal equipment can be met when the terminal equipment communicates with the cell.
  • S201 may include the following steps:
  • Step 2 The first network element obtains the first threshold or the configuration information of the first threshold, and the terminal device receives the first threshold or the configuration information of the first threshold from the first network element.
  • the first network element may include an access network device or a core network element, and the configuration information of the first threshold is used to calculate the first threshold.
  • the first network element may be an access network device, the first threshold or the configuration information of the first threshold may be carried in the first message, and the first message may be a system message.
  • the first network element may receive the first threshold or the configuration information of the first threshold from the core network element.
  • the first network element can receive the first threshold or the first threshold configuration information from the AMF network element or OAM, and the first threshold or the first threshold configuration information can be carried in the N2 message. .
  • first threshold or the configuration information of the first threshold can be configured according to actual application scenarios, and is not limited here.
  • the access network device can send the first threshold or the configuration information of the first threshold to each terminal device in the form of a broadcast system message, which can reduce the number of signaling interactions between the terminal device and the first network element.
  • the signaling overhead of the first network element and terminal equipment in the cell is reduced, and the efficiency of the terminal equipment in obtaining the first threshold is improved.
  • the first network element may be an access network device, the first threshold or the configuration information of the first threshold may be carried in the first message, and the first message may be a radio resource control (RRC) message.
  • RRC radio resource control
  • the first network element may receive the first threshold or the configuration information of the first threshold from the core network element.
  • the core network element may obtain the first threshold or the configuration information of the first threshold locally, or may receive The data stores the first threshold or the configuration information of the first threshold in the network element.
  • the first network element may receive the first threshold or the first threshold configuration information from the AMF network element or OAM, and the first threshold or the first threshold configuration information may be carried in the N2 message.
  • Data storage network elements may include: unified data management (UDM) network elements or unified data repository (UDR) network elements.
  • the RRC message can be customized with different first thresholds or configuration information of the first threshold for different terminal devices.
  • the first threshold that matches the terminal device can be customized according to the type, location or service type of the terminal device.
  • the threshold or first threshold configuration information is sent to different terminal devices through RRC messages.
  • the customized first threshold or first threshold configuration information can accurately reflect the data transmission of each terminal device. input requirements to further improve the accuracy of obtaining the first threshold.
  • the first network element may be a core network element
  • the first threshold or the configuration information of the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the first network element may obtain the first threshold or the configuration information of the first threshold locally from the core network element, or may receive the first threshold or the configuration information of the first threshold in the storage device, and communicate with the first threshold.
  • the first message is an RRC message
  • the first network element obtains the first threshold or the configuration information of the first threshold in a similar manner, which will not be described again here.
  • the NAS message can be customized with different first thresholds or first threshold configuration information for different terminal devices.
  • the first threshold or first threshold value matching the terminal device can be customized according to the type, location or service type of the terminal device.
  • the configuration information of the first threshold is sent to different terminal devices through NAS messages.
  • the customized first threshold or the configuration information of the first threshold can accurately reflect the data transmission requirements of each terminal device to further improve the acquisition of the first threshold. accuracy.
  • the communication method provided by the embodiment of the present application may also include:
  • Step A The terminal device sends feedback information to the first network element, and the first network element receives the feedback information.
  • the feedback information is used to indicate that the terminal device has successfully received the first message.
  • this prevents the first network element from repeatedly sending the first message to the terminal device, reduces the signaling overhead of the first network element, and improves the communication efficiency between the first network element and the terminal device.
  • the communication method provided by the embodiment of the present application may also include:
  • Step B The terminal device sends capability information.
  • the capability information is used to indicate that the terminal equipment has the ability to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the terminal device when the first network element is an access network device, the terminal device can send capability information to the access network device, and then the access network device sends the capability information to the core network element.
  • Terminal equipment can also send capability information to core network elements.
  • the capability information can be carried in the RRC message.
  • the terminal device sends the capability information to the access network device, and then the access network device will carry The capability information in the N2 message is sent to the AMF network element, and the AMF network element determines that the terminal equipment has the ability to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the capability information can be carried in the NAS message.
  • the terminal device sends the capability information to the AMF network element, and then the AMF network element determines the terminal
  • the device has the ability to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the terminal device when the first network element is a core network element, can send capability information to the access network device, and then the access network device sends the capability information to the core network element.
  • Terminal equipment can also send capability information to core network elements.
  • the capability information can be carried in the NAS message.
  • the terminal device sends the capability information to the AMF network element, and then the AMF network element determines that the terminal device has The ability to perform public land mobile network selection and/or cell selection based on a first threshold.
  • the capability information can be carried
  • the terminal device sends the capability information carried in the RRC message to the access network device, and then the access network device sends the capability information carried in the N2 message to the AMF network element.
  • the AMF network element determines that the terminal device has capabilities based on the first threshold. The ability to perform public land mobile network selection and/or cell selection.
  • the capability information comes from one or more of the following devices: terminal equipment, access network equipment, or data storage network elements.
  • the data storage network element is similar to the data storage network element involved in step 2, and may also include UDM network elements or UDR network elements.
  • the network side device can customize the first threshold for the terminal device based on the capability information.
  • the first threshold can accurately reflect the data transmission requirements of each terminal device, thereby improving the accuracy of obtaining the first threshold. .
  • S202 Perform public land mobile network selection and/or cell selection based on the first threshold.
  • S202 may include the following steps:
  • Step 3 The terminal device determines that the actual channel state reaches the channel state corresponding to the first threshold.
  • Step 4 The terminal equipment selects the public land mobile network and/or cell corresponding to the actual channel status to transmit data.
  • the terminal device when the terminal device obtains the first threshold, it performs public land mobile network selection and/or cell selection based on the first threshold.
  • the terminal device obtains the first threshold and the second threshold, and may compare the channel state corresponding to the first threshold and the channel state corresponding to the second threshold. When the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold, of the channel status, and performs public land mobile network selection and/or cell selection based on the first threshold. When the channel state corresponding to the first threshold is worse than the channel state corresponding to the second threshold, cell selection is performed based on the second threshold.
  • the terminal device usually first selects the public land mobile network only based on the priority, and then selects the cell in the public land mobile network based on the second threshold.
  • the terminal equipment When each cell in the selected public land mobile network
  • the terminal equipment is likely to always be in the state of "signaling transmission is successful, but data transmission fails or the data transmission rate is very low.”
  • the terminal device In such a "hanging" state, that is, the terminal device reselects the public land mobile network and cell based on the above priority rules and the second threshold, it is also very likely to enter this "hanging" state again and cannot carry out normal data communication. .
  • the terminal device can select the public land mobile network and the cell according to the first threshold.
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold, that is, based on the data transmission channel
  • the actual demand for status is higher than that of signaling transmission.
  • the terminal device can select a public land mobile network whose channel status of the cell can meet the data transmission requirements, and then select the public land mobile network. in order to avoid the above-mentioned "hanging" state or reduce the probability of the above-mentioned "hanging” state, thereby improving the reliability of the terminal equipment in selecting the public land mobile network and the cell.
  • the terminal device can select the public land mobile network and the cell according to the first threshold.
  • the channel status corresponding to the first threshold is better than the channel status corresponding to the second threshold.
  • the terminal device can access the cell with better channel status.
  • the terminal device Data and signaling can be transmitted with the cell based on a channel with better communication quality, thereby improving the communication quality of the terminal equipment.
  • the communication method provided by the embodiment of the present application is described in detail above with reference to Figures 2-3.
  • the communication device for executing the communication method provided by the embodiment of the present application will be described in detail below with reference to FIGS. 4-6 .
  • FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 400 includes: a processing module 401 and a transceiver module 402 .
  • FIG. 4 shows only the main components of the communication device.
  • the communication device 400 may be applicable to the communication system shown in Figure 1.
  • the terminal device In executing the communication method shown in Figure 2 or Figure 3, the terminal device obtains the first threshold and performs public land communication based on the first threshold. Mobile network selection and/or cell selection functions.
  • the processing module 401 is used to obtain a first threshold.
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold.
  • the second threshold is used for cell selection of the terminal equipment and is not used for public land mobile network selection.
  • the transceiver module 402 is configured to perform public land mobile network selection and/or cell selection based on the first threshold.
  • the processing module 401 can be used to determine the first threshold based on the first parameter.
  • the first parameter can include a baseline value, a step size, a maximum number of steps, and/or a boundary threshold.
  • the baseline value is the initial value of the first threshold,
  • the step length and the number of steps are used to determine the amount of change of the first threshold.
  • the maximum number of steps is the maximum value of the number of steps.
  • the boundary threshold is the maximum or minimum value of the first threshold.
  • the step length is the minimum value of the change of the first threshold. .
  • the transceiver module 402 may be used to determine the channel state corresponding to the first threshold when the actual channel state reaches it, and select the public land mobile network and cell corresponding to the actual channel state to transmit data.
  • the processing module 401 may be configured to receive the first threshold or the configuration information of the first threshold from the first network element.
  • the first network element may include an access network device or a core network element.
  • the configuration of the first threshold The information is used to calculate the first threshold.
  • the first network element may be an access network device
  • the first threshold may be carried in the first message
  • the first message may be a system message.
  • the first network element may be an access network device
  • the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first network element may be a core network element
  • the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the transceiving module 402 may be configured to: send feedback information to the first network element, where the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the transceiver module 402 may be configured to: send capability information, where the capability information is used to indicate that the terminal device is capable of performing public land mobile network selection and/or cell selection based on the first threshold.
  • the processing module 401 involved in the communication device 400 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver or a transceiver unit.
  • the transceiver module 402 may be implemented by a processor or a processor-related circuit component, and may be a processor or a processing unit.
  • the processing module 401 and the transceiver module 402 can be integrated into the same processing module.
  • the communication device 400 may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device, which is not limited in this application.
  • the technical effects of the communication device 400 can be referred to the technical effects of the communication method shown in FIG. 2, which will not be described again here.
  • FIG. 5 is a second structural schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 5 shows only the main components of the communication device.
  • the communication device 500 may be adapted to the communication system shown in Figure 1, and execute the steps of Figure 2 or In the communication method shown in Figure 3, the first network element obtains the first threshold or the configuration information of the first threshold and sends the first threshold or the configuration information of the first threshold to the terminal device.
  • the communication device 500 includes: a processing module 501 and a transceiver module 502 .
  • the processing module 501 is used to obtain the first threshold or the configuration information of the first threshold.
  • the channel state corresponding to the first threshold is better than the channel state corresponding to the second threshold.
  • the first threshold is used for public land mobile network selection of the terminal device. and/or cell selection
  • the second threshold is used for cell selection of the terminal equipment and is not used for public land mobile network selection
  • the configuration information of the first threshold is used to calculate the first threshold.
  • the transceiving module 502 is configured to send the first threshold or the configuration information of the first threshold to the terminal device.
  • the first network element may be an access network device
  • the first threshold may be carried in the first message
  • the first message may be a system message.
  • the first network element may be an access network device
  • the first threshold may be carried in the first message
  • the first message may be an RRC message.
  • the first network element may be a core network element
  • the first threshold may be carried in the first message
  • the first message may be a NAS message.
  • the transceiver module 502 can also be used to receive feedback information.
  • the feedback information is used to indicate that the terminal device has successfully received the first message.
  • the transceiver module 502 can also be used to receive capability information.
  • the capability information is used to indicate that the terminal equipment is capable of performing public land mobile network selection and/or cell selection based on the first threshold.
  • the capability information may come from one or more of the following devices: terminal equipment, access network equipment, or data storage network elements.
  • the processing module 501 involved in the communication device 500 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver or a transceiver unit.
  • the transceiver module 502 may be implemented by a processor or a processor-related circuit component, and may be a processor or a processing unit.
  • the processing module 501 and the transceiver module 502 can be integrated into the same processing module.
  • the communication device 500 may be a first network element, a chip (system) or other components or components that can be disposed in the first network element, or a device including the first network element. This application There is no restriction on this.
  • the technical effects of the communication device 500 can be referred to the technical effects of the communication method provided in FIG. 2, which will not be described again here.
  • FIG. 6 is a schematic third structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram three of a communication device provided by an embodiment of the present application.
  • the communication device 600 includes: a processor 601 .
  • the processor 601 may be coupled to a memory (not shown in Figure 6), where the processor is used to execute the communication method shown in Figure 6.
  • FIG. 6 shows only the main components of the communication device.
  • the communication device 600 may be applicable to the communication system shown in Figure 1, execute the communication method shown in Figure 2 or Figure 3, execute the terminal device to obtain the first threshold and perform public communication based on the first threshold.
  • the communication device 600 may also include: a memory 603.
  • the memory 603 is used to store computer instructions.
  • the communication device 600 performs any communication method provided in FIG. 2 or FIG. 3 .
  • the processor is the control center of the communication device 600 and may be one processor 601 or a collective name for multiple processing elements.
  • the processor is one or more central processing units (CPUs), or it can be an application specific integrated circuit (ASIC), or one or more processors configured to implement the embodiments of the present application.
  • Integrated circuits such as one or more microprocessors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA).
  • the processor 601 can perform various functions of the communication device 600 by running or executing software programs stored in the memory 603 and calling data stored in the memory 603.
  • the processor may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 6 .
  • the communication device 600 may also include multiple processors, such as the processor 601 and the processor 602 shown in Figure 6 (drawn with a dotted line in Figure 6).
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • a processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the memory 603 is used to store the software program for executing the solution of the present application, and the execution is controlled by the processor 601 and the processor 602.
  • the processor 601 and the processor 602. For specific implementation methods, please refer to the above method embodiments, which will not be described again here.
  • the memory 603 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or a random access memory (RAM) that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • RAM random access memory
  • Other types of dynamic storage devices for instructions can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical discs Storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and any other media capable of being accessed by a computer, without limitation.
  • the memory 603 may be integrated with the processor 601 or may exist independently and be coupled to the processor 601 through the interface circuit (not shown in FIG.
  • the communication device 600 further includes: a transceiver 604.
  • Transceiver 604 is used for communication with other communication devices.
  • the communication device 600 is a terminal device, and the transceiver 604 can be used to communicate with a non-terrestrial transmission node belonging to the same cell set in the non-terrestrial communication network, or to communicate with another terminal device.
  • the communication device 600 is a non-terrestrial transmission node belonging to the same cell set in the non-terrestrial communication network, and the transceiver 604 can be used to communicate with the terminal device and other non-terrestrial transmission nodes belonging to the same cell set in the non-terrestrial communication network. Node communication or communication with non-terrestrial transmission nodes in other non-terrestrial communication networks.
  • transceiver 604 may include a receiver and a transmitter (not shown separately in Figure 6). Among them, the receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.
  • the transceiver 604 may be integrated with the processor 601, or may exist independently and be
  • the interface circuit (not shown in Figure 6) of the communication device 600 is coupled to the processor 601, which is not specifically limited in the embodiment of the present application.
  • the structure of the communication device 600 shown in FIG. 6 does not constitute a limitation on the communication device.
  • the actual communication device may include more or less components than shown in the figure, or some components may be combined, or Different component arrangements.
  • the communication device 600 may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device, which is not limited in this application.
  • the communication device 600 may also be an access network device or core network element in the mobile communication network, or it may be a chip (system) or other component or component that can be installed in the access network device or core network element, or it may be It includes access network equipment or devices in core network elements, and this application does not limit this.
  • the technical effects of the communication device 600 can be referred to the technical effects of the communication method in FIG. 2, which will not be described again here.
  • the technical effects of the communication device 600 can be referred to the technical effects of the communication method described in the above method embodiments, which will not be described again here.
  • the processor in the embodiment of the present application can be a central processing unit (CPU).
  • the processor can also be other general-purpose processors, digital signal processors (DSP), special-purpose integrated processors, etc.
  • Circuit application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • RAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory access memory
  • direct rambus RAM direct rambus RAM, DR RAM
  • the above embodiments may be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transferred from a computer-readable storage medium to another computer-readable storage medium.
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media.
  • the usable media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “plurality” refers to two or more.
  • At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes a number of instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

Abstract

本申请提供一种通信方法及装置，能够解决终端设备选择公共陆地移动网和/或小区的可靠性低以及终端设备通信质量差的问题，从而终端设备选择公共陆地移动网和小区的可靠性以及终端设备通信质量，可应用于移动通信系统中。该方法包括：获取第一阈值，基于第一阈值进行公共陆地移动网选择和/或小区选择。其中，第一阈值对应的信道状态优于第二阈值对应的信道状态，第二阈值用于终设备的小区选择且不用于公共陆地移动网选择。

Description

通信方法及装置
本申请要求于2022年04月21日提交国家知识产权局、申请号为202210423635.7、申请名称为“通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种通信方法及装置。
背景技术
在通信技术领域，终端设备在接入小区前，终端设备需要选择公共陆地移动网以及该公共陆地移动网中的小区。
现阶段，通过公共陆地移动网优先级确定终端设备接入的公共陆地移动网，再从该公共陆地移动网的小区中，基于第二阈值选择信道状态较好的小区，并接入该小区。
然而，在通过公共陆地移动网的优先级选定某一公共陆地移动网后，只能够在该选定的公共陆地移动网中进行小区选择。当该公共陆地移动网的各个小区的信道状态都很差时，终端设备很有可能因处于“信令传输成功，但数据传输失败或者数据传输速率很低”这样一种“挂死”状态，即便终端设备基于上述优先级规则重新选择公共陆地移动网和小区，也很有可能再次进入这种“挂死”状态，无法进行正常的数据通信或者通信质量很差，从而导致终端设备选择公共陆地移动网和小区的可靠性低，且终端设备的通信质量也很差。
发明内容
本申请实施例提供一种通信方法及装置，能够解决终端设备选择公共陆地移动网和/或小区的可靠性低以及终端设备通信质量差的问题，从而提高终端设备选择公共陆地移动网和/或小区的可靠性以及终端设备通信质量。
第一方面，提供一种通信方法，应用于终端设备，该通信方法包括：
获取第一阈值，基于第一阈值进行公共陆地移动网选择和/或小区选择。其中，第一阈值对应的信道状态优于第二阈值对应的信道状态，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择。
现有方案中，终端设备通常先是只根据优先级选择公共陆地移动网，再根据第二阈值选择该公共陆地移动网中的小区，当选择出来的公共陆地移动网中的各个小区的信道状态均比较差时，终端设备很有可能一直处于“信令传输成功，但数据传输失败或者数据传输速率很低”这样一种“挂死”状态，即终端设备基于上述优先级规则和第二阈值重新选择公共陆地移动网和小区，也很有可能再次进入这种“挂死”状态，无法进行正常的数据通信。而基于第一方面以及下述第二方面提供的通信方法，终端设备可以根据第一阈值选择公共陆地移动网和/或小区，该第一阈值对应的信道状态优于第二阈值对应的信道状态，即基于数据传输对信道状态的要求比信令传输更高这一实际需求，终端设备能够在选择公共陆地移动网时，选择包含的小区的信道状态能够满足 数据传输需求的公共陆地移动网，进而选择该公共陆地移动网中的小区，以避免出现上述“挂死”状态，或降低出现上述“挂死”状态的概率，从而提高终端设备选择公共陆地移动网和小区的可靠性。
此外，终端设备可以根据第一阈值选择公共陆地移动网和小区，该第一阈值对应的信道状态优于第二阈值对应的信道状态，终端设备能够接入信道状态更好的小区，终端设备与小区之间能够基于通信质量更好的信道传输数据和信令，从而提高终端设备的通信质量。
一种可能的设计方案中，获取第一阈值，可以包括：基于第一参数确定第一阈值，确定实际信道状态达到第一阈值对应的信道状态，选择实际信道状态对应的公共陆地移动网和/或小区传输数据。其中，第一参数可以包括基线值、步长、最大步数和/或边界阈值，基线值为第一阈值的初始值，步长与步数用于确定第一阈值的变化量，最大步数为步数的最大值，边界阈值为第一阈值的最大值或最小值，步长为第一阈值的变化量的最小值。如此，在步数小于或等于最大步数，和/或，在第一阈值小于或等于最大值或在第一阈值大于或等于最小值的情况中，基于基线值并逐步增加步数确定第一阈值，直到该第一阈值对应的信道状态下的通信质量能够达到期望值。当实际信道状态达到该第一阈值对应的信道状态时，实际信道状态对应的通信质量能够达到上述期望值，以满足终端设备数据的传输需求。
另一种可能的设计方案中，获取第一阈值，可以包括：接收来自第一网元的第一阈值或第一阈值的配置信息。其中，第一网元可以包括接入网设备或核心网网元。
一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为系统消息。如此，接入网设备可以通过广播系统消息的形式将第一阈值或第一阈值的配置信息向各个终端设备发送，能够减少终端设备与第一网元之间的信令交互次数，降低小区中第一网元和终端设备的信令开销，提高终端设备获取第一阈值的效率。
另一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为RRC消息。如此，可以为不同的终端设备分别定制第一阈值或第一阈值的配置信息，如可以根据终端设备的类型、位置或者业务类型等定制第一阈值或第一阈值的配置信息，并通过RRC消息发送给不同的终端设备，该定制的第一阈值或第一阈值的配置信息能够准确地反映各个终端设备的数据传输需求，以进一步提高获取第一阈值的准确性。
又一些实施例中，第一网元可以为核心网网元，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为NAS消息。如此，NAS消息可以为不同的终端设备分别对应定制不同的第一阈值或第一阈值的配置信息，如可以根据终端设备的类型、位置或者业务类型等定制与终端设备匹配的第一阈值或第一阈值的配置信息，并通过NAS消息发送给不同的终端设备，该定制的第一阈值或第一阈值的配置信息能够准确地反映各个终端设备的数据传输需求，以进一步提高获取第一阈值的准确性。
一种可能的设计方案中，第一方面提供的通信方法还可以包括：向第一网元发送反馈信息。其中，反馈信息用于指示终端设备已成功接收第一消息。如此，终端设备能够告知第一网元已成功接收第一消息，避免第一网元重复向该终端设备发送第一消 息，减小第一网元的信令开销，提高第一网元和终端设备的通信效率。
一种可能的设计方案中，第一方面提供的通信方法还可以包括：发送能力信息。其中，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。如此，网络侧设备能够基于能力信息，为终端设备定制第一阈值，该第一阈值能够准确地反映各个终端设备的数据传输需求，从而提高获取第一阈值的准确性。
第二方面，提供一种通信方法，应用于第一网元，该通信方法包括：获取第一阈值或第一阈值的配置信息，第一阈值对应的信道状态优于第二阈值对应的信道状态，第一阈值用于终端设备的公共陆地移动网选择和/或小区选择，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择，第一阈值的配置信息也可以称为与第一阈值相关的参数用于计算第一阈值，向终端设备发送第一阈值或第一阈值的配置信息。
一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为系统消息。
另一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为RRC消息。
又一些实施例中，第一网元可以为核心网网元，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为NAS消息。
一种可能的设计方案中，第二方面提供的通信方法还可以包括：接收反馈信息。其中，反馈信息用于指示终端设备已成功接收第一消息。
一种可能的设计方案中，第二方面提供的通信方法还可以包括：接收能力信息。其中，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择。
一些实施例中，能力信息可以来自如下一项或多项设备：终端设备、接入网设备或数据存储网元。
此外，第二方面提供的通信方法的技术效果可以参考第一方面提供的通信方法的技术效果，此处不再赘述。
第三方面，提供一种通信装置，应用于终端设备，该通信装置包括：处理模块和收发模块。其中，处理模块，用于获取第一阈值，第一阈值对应的信道状态优于第二阈值对应的信道状态，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择。收发模块，用于基于第一阈值进行公共陆地移动网选择和/或小区选择。
一种可能的设计方案中，处理模块可以用于：基于第一参数确定第一阈值，第一参数可以包括基线值、步长、最大步数和/或边界阈值，基线值为第一阈值的初始值，步长与步数用于确定第一阈值的变化量，最大步数为步数的最大值，边界阈值为第一阈值的最大值或最小值，步长为第一阈值的变化量的最小值。
一些实施例中，收发模块可以用于：确定实际信道状态达到第一阈值对应的信道状态，选择实际信道状态对应的公共陆地移动网和/或小区传输数据。
另一种可能的设计方案中，处理模块可以用于：接收来自第一网元的第一阈值或第一阈值的配置信息，第一网元可以包括接入网设备或核心网网元，第一阈值的配置信息用于计算第一阈值。
一些实施例中，第一网元可以为接入网设备，第一阈值可以承载于第一消息中，第一消息可以为系统消息。
另一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为RRC消息。
又一些实施例中，第一网元可以为核心网网元，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为NAS消息。
一种可能的设计方案中，收发模块可以用于：向第一网元发送反馈信息，反馈信息用于指示终端设备已成功接收第一消息。
一种可能的设计方案中，收发模块可以用于：发送能力信息，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择。
此外，第三方面提供的通信装置的技术效果可以参考第一方面提供的通信方法的技术效果，此处不再赘述。
第四方面，提供一种通信装置，应用于第一网元，该通信装置包括：处理模块和收发模块。其中，处理模块，用于获取第一阈值，第一阈值对应的信道状态优于第二阈值对应的信道状态，第一阈值用于终端设备的公共陆地移动网选择和/或小区选择，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择。收发模块，用于向终端设备发送第一阈值。
一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为系统消息。
另一些实施例中，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为RRC消息。
又一些实施例中，第一网元可以为核心网网元，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为NAS消息。
一种可能的设计方案中，收发模块还可以用于：接收反馈信息。其中，反馈信息用于指示终端设备已成功接收第一消息。
一种可能的设计方案中，收发模块还可以用于：接收能力信息。其中，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择。
一些实施例中，能力信息可以来自如下一项或多项设备：终端设备、接入网设备或数据存储网元。
此外，第四方面提供的通信装置的技术效果可以参考第二方面提供的通信方法的技术效果，此处不再赘述。
第五方面，提供一种通信装置，该通信装置包括：处理器，该处理器与存储器耦合。其中，处理器用于执行存储器中存储的计算机程序，以使得通信装置执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
第六方面，提供一种通信装置。该通信装置包括：处理器和存储器。该存储器用于存储计算机指令，当处理器执行该计算机指令时，以使该通信装置执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
第七方面，提供一种通信装置，该通信装置包括：处理器和接口电路。其中，接口电路，用于接收代码指令并传输至处理器。处理器用于运行代码指令以执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
第八方面，提供一种通信装置，该通信装置包括处理器和收发器。其中，收发器用于该通信装置和其他通信装置之间进行信息交互。处理器执行程序指令，用以执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
此外，第五方面到第八方面提供的通信装置的技术效果可以参考第一方面以及第二方面提供的通信方法的技术效果，此处不再赘述。
第九方面，提供一种计算机可读存储介质，计算机可读存储介质包括计算机程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
第十方面，提供一种计算机程序产品，计算机程序产品包括：计算机程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行如第一方面及其任一种可能的设计方式或如第二方面及其任一种可能的设计方式提供的任一种方法。
附图说明
图1为本申请实施例提供的一种通信系统的架构示意图；
图2为本申请实施例提供的通信方法的流程示意图；
图3为本申请实施例提供的确定第一阈值的流程示意图；
图4为本申请实施例提供的通信装置的结构示意图一；
图5为本申请实施例提供的通信装置的结构示意图二；
图6为本申请实施例提供的通信装置的结构示意图三。
具体实施方式
本申请实施例的技术方案可以应用于各种通信系统，例如无线保真(wireless fidelity，WiFi)系统，车到任意物体(vehicle to everything，V2X)通信系统、设备间(device-to-device，D2D)通信系统、车联网通信系统、第4代(4th generation，4G)移动通信系统，如长期演进(long term evolution，LTE)系统、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)移动通信系统，如新空口(new radio，NR)系统，以及未来的通信系统，如第六代(6th generation，6G)移动通信系统等。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
另外，在本申请实施例中，“示例地”、“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本申请实施例中，“信息(information)”，“信号(signal)”，“消息(message)”， “信道(channel)”、“信令(signaling)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例中，有时候下标如W1可能会笔误为非下标的形式如W1，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
在通信技术领域，终端设备在接入小区前，需要选择公共陆地移动网(public land mobile network，PLMN)以及该公共陆地移动网中的小区，以接入该小区传输数据。
现阶段，通过公共陆地移动网优先级确定终端设备接入的公共陆地移动网，再从该公共陆地移动网的众多小区中，基于第二阈值选择小区并接入该小区。
但是，通过公共陆地移动网的优先级顺序选择要接入的公共陆地移动网后，只能够在同一个公共陆地移动网中进行小区选择。当该公共陆地移动网中各个小区的信道状态比较差时，终端设备很有可能因处于“信令传输成功，但数据传输失败或者数据传输速率很低”这样一种“挂死”状态，即便存在信道状态更好的其他公共陆地移动网，也无法接入信道状态更好的其他公共陆地移动网中的小区。并且，即便终端设备基于上述优先级规则重新选择公共陆地移动网和小区，也很有可能再次进入这种“挂死”状态，无法进行正常的数据通信或者通信质量很差，从而导致终端设备选择公共陆地移动网和小区可靠性低，且终端设备通信质量也很差。
为解决上述问题，本申请实施例提供一种通信方法及装置。为便于理解本申请实施例，首先以图1中示出的通信系统为例详细说明适用于本申请实施例的通信系统。
示例性地，图1为本申请实施例提供的一种通信系统的架构示意图。
如图1所示，该通信系统可以包括第一网元和终端设备。
其中，第一网元可以包括接入网设备或者核心网网元。
应理解，接入网设备可以为位于上述通信系统的网络侧的设备，且具有无线收发功能的设备或者网元或可设置于该设备的芯片或芯片系统。该接入网设备可以包括但不限于：无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)，如家庭网关、路由器、服务器、交换机、网桥等，演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G，如，新空口(new radio，NR)系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)、具有基站功能的路边单元(road  side unit，RSU)等。
可以理解的是，核心网网元可以为移动通信网络中的核心网网元。举例来说，当移动通信网络为第五代移动通信网络时，该核心网网元可以包括接入和移动性管理功能(access and mobility management function，AMF)网元或者操作管理维护(operation administration and maintenance，OAM)网元。
上述终端设备可以为接入上述通信系统，且具有无线收发功能的终端或可设置于该终端的芯片或芯片系统。该终端设备也可以称为用户装置、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有终端功能的RSU等。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请提供的通信方法。
需要说明的是，本申请实施例提供的通信方法，可以适用于图1所示的终端设备与第一网元之间的通信，具体实现可以参考下述方法实施例，此处不再赘述。
应当指出的是，本申请实施例中的方案还可以应用于其他通信系统中，相应的名称也可以用其他通信系统中的对应功能的名称进行替代。
应理解，图1仅为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备或者网元。以5G移动通信系统为例，其他网络设备或者网元可以包括：鉴权服务器功能(authentication server function，AUSF)网元、策略控制功能(policy control function，PCF)网元或者会话管理功能(session management function，SMF)网元等网元。图1中未予以画出。
下面将结合图2-图3对本申请实施例提供的通信方法进行具体阐述。
示例性地，图2为本申请实施例提供的通信方法的流程示意图。该通信方法可以适用于图1所示的终端设备与第一网元之间的通信。
如图2所示，适用于图1中示出的通信系统的通信方法包括如下步骤：
S201、终端设备获取第一阈值。
其中，第一阈值对应的信道状态优于第二阈值对应的信道状态，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择。
可选地，第一阈值可以是任意描述信道状态的参数的数值，例如，第一阈值可以包括以下一项或者多项：参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、信号与干扰加噪声比(signal to interference plus noise ratio，SINR)、可用带宽、时延以及误码率等参数的数值。
可以理解的是，信道状态表示通信状态，可以理解为小区质量或者通信链路状态。
一些实施方式中，在终端设备、第一网元或者存储设备设置第一阈值时，可以通过设置描述信道状态的参数的数值，以确保第一阈值对应的信道状态优于第二阈值对应的信道状态。例如，可以对描述信道状态的各个参数赋予权重值，并基于上述权重值进行加权计算得到第一阈值对应的加权值以及第二阈值对应的加权值，对比第一阈值对应的加权值以及第二阈值对应的加权值。
应理解，描述信道状态的各个参数对应的权重值可以根据实际应用场景设置，在此不做限定。可以理解的是，与信道状态正相关的参数的数值越高，该参数对应的信道状态越优。例如，与信道状态正相关的参数可以包括RSRP、RSRQ、SINR以及可用带宽等参数。
进一步地，当从与信道状态正相关的参数的数值来对比第一阈值对应的信道状态和第二阈值对应的信道状态时，第一阈值对应的与信道状态正相关的参数的数值高于第二阈值对应的与信道状态正相关的参数的数值。以RSRP为例，第一阈值为RSRP1，第二阈值为RSRP2，且RSRP1>RSRP2，则第一阈值对应的信道状态优于第二阈值对应的信道状态。可以理解的是，与信道状态负相关的参数的数值指的是，该参数的数值越低，该参数对应的信道状态越优。例如，与信道状态负相关的参数可以包括：误码率、时延或者丢包率等参数。
进一步地，当从与信道状态负相关的参数的数值来对比第一阈值对应的信道状态和第二阈值对应的信道状态时，第一阈值对应的与信道状态负相关的参数的数值低于第二阈值对应的与信道状态负相关的参数的数值。以误码率为例，第一阈值为第一误码率，第二阈值为第二误码率，且第一误码率小于第二误码率，则第一阈值对应的信道状态优于第二阈值对应的信道状态。
应理解，可以根据实际场景的需求配置第一阈值或者第一阈值的配置信息，第一阈值的配置信息可以理解为与第一阈值相关的参数。例如，同一类型的终端设备的第一阈值或者第一阈值的配置信息一致，即可以设置所有手机的第一阈值或者第一阈值的配置信息对应一致，或者所有智能水表的第一阈值或者第一阈值的配置信息对应一致，或者所有车载设备的第一阈值或者第一阈值的配置信息对应一致。再例如，可以设置同一PLMN中的终端设备的第一阈值或者第一阈值的配置信息对应一致。上述只是列举两种不同应用场景中的第一阈值或者第一阈值的配置信息的设置方式，并不对第一阈值或者第一阈值的配置信息的配置方式形成限定。
可以理解的是，基于第一阈值，终端设备能够在不同PLMN中的各个小区中选择信道状态较优的小区并接入，即选择实际信道状态达到第一阈值的信道状态的小区并接入，实际信道状态达到第一阈值的信道状态的小区，包括实际信道状态优于或等于第一阈值的信道状态的小区。可以理解的是，现有技术中，第二阈值用于在终端设备根据PLMN的优先级选择PLMN，并在该PLMN中选择实际信道状态达到第二阈值的小区并接入，即第二阈值仅仅用于终端设备的小区选择。
可以理解的是，在S201中，终端设备可以从本地获取第一阈值或者从第一网元获取第一阈值，图2中仅画出从本地获取第一阈值的方式。具体来说，终端设备可以从本地获取第一阈值，或者基于从第一网元或者本地的第一阈值的配置信息计算得到第 一阈值，也可以接收来自第一网元的第一阈值。
可选地，S201可以包括以下步骤：
步骤1、终端设备基于第一参数确定第一阈值。
其中，第一参数可以包括基线值、步长、最大步数和/或边界阈值，基线值为第一阈值的初始值，步长与步数用于确定第一阈值的变化量，最大步数为步数的最大值，边界阈值为第一阈值的最大值或最小值，步长为第一阈值的变化量的最小值。
应理解，第一参数为终端设备用于确定第一阈值的参数，下述步骤2中的第一阈值的配置信息为终端设备从第一网元接收的用于确定第一阈值的参数，第一参数与第一阈值的配置信息可以一致也可以不一致，此处不作限定。
应理解，此处对配置基线值的方式不做限定。一些实施方式中，可以根据实际应用场景在终端设备上配置基线值并存储在终端设备，终端设备可以从本地获取基线值，终端设备也可以从第一网元获取基线值。
举例来说，终端设备从本地或者第一网元获取配置好的偏移量和/或缩放因子以及第二阈值，终端设备基于第二阈值、偏移量和/或缩放因子计算得到基线值，偏移量以及缩放因子可以根据实际应用场景配置。可以理解的是，终端设备可以从本地获取第二阈值或者第二阈值的配置信息，也可以从第一网元获取第二阈值或者第二阈值的配置信息。当终端设备从第一网元获取第二阈值或者第二阈值的配置信息时，第二阈值或者第二阈值的配置信息可以承载在接入层(access stratum，AS)消息或者非接入层(non access stratum，NAS)消息中。
具体举例如下，可配置偏移量为10，基于第二阈值b，基线值a＝b+10。或者，可配置缩放因子为1.2，基线值a＝1.2*b。或者，可同时配置偏移量为10，配置缩放因子为1.2，基线值a＝1.2*(b+10)。以上只是示例几种基于偏移量和/或缩放因子计算基线值的方式，并不对基线值形成限制。
可以理解，当第一阈值与信道状态正相关时，偏移量大于0和/或缩放因子大于1。当第一阈值与信道状态负相关时，偏移量小于0和/或缩放因子小于1。
应理解，可以根据实际应用场景设置第一参数中的步长、最大步数以及边界阈值，此处不作限定。
示例性地，图3为本申请实施例提供的确定第一阈值的流程示意图。
可选地，步骤1可以包括以下步骤：
S301、终端设备确定是否具备第一参数。
可以理解的是，在S301之前，可以确定终端设备获取第一阈值。例如在终端设备刚开机、终端设备接收来自通信系统中第一网元关于获取第一阈值的信令、终端设备发送数据失败的次数达到指定次数、终端设备传输数据的速率低于指定速率、终端设备处于指定区域且该区域中无法支持终端设备通信和/或者终端设备需要发起指定业务时，终端设备确定获取第一阈值。
可选地，当S301确定具备第一参数时，执行S302。当S301确定不具备第一参数时，执行S303。S302以及S303具体如下：
S302、终端设备基于第一参数开始计算当前第一阈值。
为了方便描述，可以用符号表示第一参数。例如，可以用p表示第一阈值，可以 用m表示基线值、可以用l表示步长、可以用n表示步数。应理解，可以采用其他方式描述第一参数，此处不做限定。
一些实施例中，第一阈值的计算方式如下：p＝m+l*n，步数n的初始值可以设置为0。
另一些实施例中，第一阈值的计算方式如下：p＝m*l(n)，步数n的初始值可以设置为0。
S303、终端设备退出确定第一阈值的流程。
可选地，在终端设备执行S302之后，终端设备执行：
S304、终端设备确定当前第一阈值对应的信道状态是否满足终端设备的通信需求。
可选地，当S304中终端设备确定第一阈值对应的信道状态满足终端设备的通信需求后，执行S303。当S304中终端设备确定第一阈值对应的信道状态不满足终端设备的通信需求后，执行S305。S305具体如下：
S305、判断当前步数是否满足小于或者等于最大步数，和/或，判断当前第一阈值是否满足小于或者等于边界阈值。
可以理解的是，S305适用于第一阈值与信道状态正相关时的情形，该情形中边界阈值为第一阈值的最大值。
可选地，当第一阈值与信道状态负相关，且S304中终端设备确定第一阈值对应的信道状态不满足终端设备的通信需求后，执行步骤一。步骤一具体如下：
步骤一、判断当前步数是否满足小于或者等于最大步数和/或判断当前第一阈值是否满足大于或者等于边界阈值。
可以理解的是，步骤一适用于第一阈值与信道状态负相关时的情形，该情形中边界阈值为第一阈值的最小值。
可以理解的是，选择执行S305或步骤一后，终端设备执行S306，S306具体如下：
S306、增加步数。
例如，以p＝m+l*n计算第一阈值为例，初始步数设置为0时，第一阈值p＝m+l*0。增加步数后，步数可以变为1，第一阈值p＝m+l*1。
例如，以p＝m*l(n)计算第一阈值为例，初始步数设置为0时，第一阈值p＝m*l(0)。增加步数后，步数可以变为1，第一阈值p＝m*l(1)。
在执行S306后，跳转执行S302。
可选地，当第一阈值与信道状态正相关时，在当前步数不满足小于或者等于最大步数和/或判断当前第一阈值不满足小于或者等于边界阈值时，执行S307。
可选地，当第一阈值与信道状态负相关时，在当前步数不满足小于或者等于最大步数和/或判断当前第一阈值不满足大于或者等于边界阈值时，执行S307。S307具体如下：
S307、终端设备等待预定时间。
可以理解的是，预定时间可以根据实际需求设定，此处不做限定。
可选地，在执行S307后，终端设备从S301开始重新开始确定第一阈值。
可以理解的是，当第一阈值与信道状态正相关时，在步数小于或等于最大步数和/或在第一阈值小于或等于边界阈值的情况中，基于基线值并逐步增加步数确定第一阈 值，直到该第一阈值对应的信道状态下通信质量(例如数据传输速率、数据误码率以及数据传输成功率)能够达到期望值。当实际信道状态达到该第一阈值对应的信道状态时，实际信道状态对应的通信质量能够达到上述期望值，以保证终端设备与小区通信时，能够满足终端设备数据的传输需求。
可以理解的是，当第一阈值与信道状态负相关时，在步数小于或等于最大步数和/或在第一阈值大于或等于边界阈值的情况中，基于基线值并逐步增加步数确定第一阈值，直到该第一阈值对应的信道状态下通信质量(例如数据传输速率、数据误码率以及数据传输成功率)能够达到期望值。当实际信道状态达到该第一阈值对应的信道状态时，实际信道状态对应的通信质量能够达到上述期望值，以保证终端设备与小区通信时，能够满足终端设备数据的传输需求。
可选地，S201可以包括以下步骤：
步骤2、第一网元获取第一阈值或第一阈值的配置信息，终端设备接收来自第一网元的第一阈值或第一阈值的配置信息。
其中，第一网元可以包括接入网设备或核心网网元，第一阈值的配置信息用于计算第一阈值。
可选地，第一网元可以为接入网设备，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为系统消息。
一些实施方式中，第一网元可以接收来自核心网网元的第一阈值或第一阈值的配置信息。例如，以5G移动通信系统为例，第一网元可以接收来自AMF网元或者OAM的第一阈值或第一阈值的配置信息，第一阈值或第一阈值的配置信息可以承载于N2消息中。
应理解，第一阈值或第一阈值的配置信息可以根据实际应用场景配置，此处不作限定。
可以理解的是，接入网设备可以通过广播系统消息的形式将第一阈值或第一阈值的配置信息向各个终端设备发送，能够减少终端设备与第一网元之间的信令交互次数，降低小区中第一网元和终端设备的信令开销，提高终端设备获取第一阈值的效率。
可选地，第一网元可以为接入网设备，第一阈值或者第一阈值的配置信息可以承载于第一消息中，第一消息可以为无线资源控制(radio resource control，RRC)消息。
一些实施方式中，第一网元可以接收来自核心网网元的第一阈值或者第一阈值的配置信息，核心网网元可以从本地获取第一阈值或者第一阈值的配置信息，也可以接收数据存储网元中的第一阈值或者第一阈值的配置信息。以5G移动通信系统为例，第一网元可以接收来自AMF网元或者OAM的第一阈值或第一阈值的配置信息，第一阈值或者第一阈值的配置信息可以承载在N2消息中。数据存储网元可以包括：统一数据管理(unified data management，UDM)网元或者统一数据存储(unified data repository，UDR)网元。
可以理解的是，RRC消息可以为不同的终端设备分别对应定制不同的第一阈值或第一阈值的配置信息，如可以根据终端设备的类型、位置或者业务类型等定制与终端设备匹配的第一阈值或第一阈值的配置信息，并通过RRC消息发送给不同的终端设备，该定制的第一阈值或第一阈值的配置信息能够准确地反映各个终端设备的数据传 输需求，以进一步提高获取第一阈值的准确性。
可选地，第一网元可以为核心网网元，第一阈值或第一阈值的配置信息可以承载于第一消息中，第一消息可以为NAS消息。
可以理解的是，第一网元可以从核心网网元可以从本地获取第一阈值或者第一阈值的配置信息，也可以接收存储设备中的第一阈值或者第一阈值的配置信息，与第一消息为RRC消息时，第一网元获取第一阈值或者第一阈值的配置信息的方式类似，在此不再赘述。
应理解，NAS消息可以为不同的终端设备分别对应定制不同的第一阈值或第一阈值的配置信息，如可以根据终端设备的类型、位置或者业务类型等定制与终端设备匹配的第一阈值或第一阈值的配置信息，并通过NAS消息发送给不同的终端设备，该定制的第一阈值或第一阈值的配置信息能够准确地反映各个终端设备的数据传输需求，以进一步提高获取第一阈值的准确性。可选地，当第一消息为RRC消息或者NAS消息时，本申请实施例提供的通信方法还可以包括：
步骤A、终端设备向第一网元发送反馈信息，第一网元接收反馈信息。
其中，反馈信息用于指示终端设备已成功接收第一消息。
可以理解的是，避免第一网元重复向该终端设备发送第一消息，减小第一网元的信令开销，提高第一网元和终端设备的通信效率。
可选地，当第一消息为RRC消息或者NAS消息时，本申请实施例提供的通信方法还可以包括：
步骤B、终端设备发送能力信息。
其中，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。
一些实施例中，当第一网元为接入网设备时，终端设备可以向接入网设备发送能力信息，然后接入网设备将该能力信息再发送到核心网网元。终端设备也可以向核心网网元发送能力信息。
例如，以5G移动通信系统为例，当第一网元为接入网设备时，能力信息可以承载于RRC消息中，终端设备将能力信息发送到接入网设备，然后接入网设备将承载于N2消息中的能力信息发送到AMF网元，AMF网元确定该终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。
再例如，以5G移动通信系统为例，当第一网元为接入网设备时，能力信息可以承载在NAS消息中，终端设备将能力信息发送到AMF网元，然后AMF网元确定该终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。
另一些实施例中，当第一网元为核心网网元时，终端设备可以向接入网设备发送能力信息，然后接入网设备将该能力信息再发送到核心网网元。终端设备也可以向核心网网元发送能力信息。
例如，以5G移动通信系统为例，当第一网元为AMF网元时，能力信息可以承载于NAS消息中，终端设备将能力信息发送到AMF网元，然后AMF网元确定该终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。
再例如，以5G移动通信系统为例，当第一网元为AMF网元时，能力信息可以承 载于RRC消息中，终端设备将能力信息发送到接入网设备，然后接入网设备将承载于N2消息中的能力信息发送到AMF网元，AMF网元确定该终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择的能力。
可选地，能力信息来自如下一项或多项设备：终端设备、接入网设备或数据存储网元。
可以理解的是，数据存储网元与步骤2中涉及的数据存储网元类似，也可以包括UDM网元或者UDR网元。
可以理解的是，通过能力信息，网络侧设备能够基于能力信息，为终端设备定制第一阈值，该第一阈值能够准确地反映各个终端设备的数据传输需求，从而提高获取第一阈值的准确性。
S202、基于第一阈值进行公共陆地移动网选择和/或小区选择。
可选地，S202可以包括以下步骤：
步骤3、终端设备确定实际信道状态达到第一阈值对应的信道状态。
步骤4、终端设备选择实际信道状态对应的公共陆地移动网和/或小区传输数据。
作为一种实施方式，当终端设备获取第一阈值，基于第一阈值进行公共陆地移动网选择和/或小区选择。
作为另一种实施方式，终端设备获取第一阈值以及第二阈值，可以对比第一阈值对应的信道状态和第二阈值对应的信道状态，当第一阈值对应的信道状态优于第二阈值对应的信道状态，基于第一阈值进行公共陆地移动网选择和/或小区选择。当第一阈值对应的信道状态劣于第二阈值对应的信道状态，基于第二阈值进行小区选择。
综上所述，现有方案中，终端设备通常先是只根据优先级选择公共陆地移动网，再根据第二阈值选择该公共陆地移动网中的小区，当选择出来的公共陆地移动网中的各个小区的信道状态均比较差时，即使再根据第二阈值在该公共陆地移动网中选择小区，终端设备也很有可能一直处于“信令传输成功，但数据传输失败或者数据传输速率很低”这样一种“挂死”状态，即终端设备基于上述优先级规则和第二阈值重新选择公共陆地移动网和小区，也很有可能再次进入这种“挂死”状态，无法进行正常的数据通信。而基于图2中示出的通信方法，终端设备可以根据第一阈值选择公共陆地移动网和小区，该第一阈值对应的信道状态优于第二阈值对应的信道状态，即基于数据传输对信道状态的要求比信令传输更高这一实际需求，终端设备能够在选择公共陆地移动网时，选择包含的小区的信道状态能够满足数据传输需求的公共陆地移动网，进而选择该公共陆地移动网中的小区，以避免出现上述“挂死”状态，或降低出现上述“挂死”状态的概率，从而提高终端设备选择公共陆地移动网和小区的可靠性。
进一步地，终端设备可以根据第一阈值选择公共陆地移动网和小区，该第一阈值对应的信道状态优于第二阈值对应的信道状态，终端设备能够接入信道状态更好的小区，终端设备与小区之间能够基于通信质量更好的信道传输数据和信令，从而提高终端设备的通信质量。
以上结合图2-图3详细说明了本申请实施例提供的通信方法。以下结合图4-图6详细说明用于执行本申请实施例提供的通信方法的通信装置。
示例性地，图4是本申请实施例提供的通信装置的结构示意图一。
如图4所示，通信装置400包括：处理模块401和收发模块402。为了便于说明，图4仅示出了该通信装置的主要部件。
一些实施例中，通信装置400可适用于图1中所示出的通信系统中，执行图2或者图3中所示出的通信方法中终端设备获取第一阈值并基于第一阈值进行公共陆地移动网选择和/或小区选择的功能。
其中，处理模块401，用于获取第一阈值，第一阈值对应的信道状态优于第二阈值对应的信道状态，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择。
收发模块402，用于基于第一阈值进行公共陆地移动网选择和/或小区选择。
可选地，处理模块401，可以用于基于第一参数确定第一阈值，第一参数可以包括基线值、步长、最大步数和/或边界阈值，基线值为第一阈值的初始值，步长与步数用于确定第一阈值的变化量，最大步数为步数的最大值，边界阈值为第一阈值的最大值或最小值，步长为第一阈值的变化量的最小值。
进一步地，收发模块402，可以用于确定实际信道状态达到第一阈值对应的信道状态，选择实际信道状态对应的公共陆地移动网以及小区传输数据。
可选地，处理模块401，可以用于接收来自第一网元的第一阈值或第一阈值的配置信息，第一网元可以包括接入网设备或核心网网元，第一阈值的配置信息用于计算第一阈值。
进一步地，第一网元可以为接入网设备，第一阈值可以承载于第一消息中，第一消息可以为系统消息。
进一步地，第一网元可以为接入网设备，第一阈值可以承载于第一消息中，第一消息可以为RRC消息。
进一步地，第一网元可以为核心网网元，第一阈值可以承载于第一消息中，第一消息可以为NAS消息。
更进一步地，收发模块402可以用于：向第一网元发送反馈信息，反馈信息用于指示终端设备已成功接收第一消息。
再进一步地，收发模块402可以用于：发送能力信息，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择。
应理解，通信装置400中涉及的处理模块401可以由收发器或收发器相关电路组件实现，可以为收发器或收发单元。收发模块402可以由处理器或处理器相关电路组件实现，可以为处理器或处理单元。处理模块401与收发模块402可以集成为同一个处理模块。
需要说明的是，通信装置400可以是终端设备，也可以是可设置于终端设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备的装置，本申请对此不做限定。
此外，通信装置400的技术效果可以参考图2中示出的通信方法的技术效果，此处不再赘述。
示例性地，图5是本申请实施例提供的通信装置的结构示意图二。为了便于说明，图5仅示出了该通信装置的主要部件。
一些实施例中，通信装置500可适用于图1中所示出的通信系统中，执行图2或 者图3中所示出的通信方法中第一网元获取第一阈值或第一阈值的配置信息，并向终端设备发送第一阈值或第一阈值的配置信息的功能。
如图5所示，通信装置500包括：处理模块501和收发模块502。
其中，处理模块501，用于获取第一阈值或第一阈值的配置信息，第一阈值对应的信道状态优于第二阈值对应的信道状态，第一阈值用于终端设备的公共陆地移动网选择和/或小区选择，第二阈值用于终端设备的小区选择且不用于公共陆地移动网选择，第一阈值的配置信息用于计算第一阈值。收发模块502，用于向终端设备发送第一阈值或第一阈值的配置信息。
可选地，第一网元可以为接入网设备，第一阈值可以承载于第一消息中，第一消息可以为系统消息。
可选地，第一网元可以为接入网设备，第一阈值可以承载于第一消息中，第一消息可以为RRC消息。
可选地，第一网元可以为核心网网元，第一阈值可以承载于第一消息中，第一消息可以为NAS消息。
进一步地，收发模块502还可以用于：接收反馈信息。其中，反馈信息用于指示终端设备已成功接收第一消息。
再进一步地，收发模块502还可以用于：接收能力信息。其中，能力信息用于指示终端设备具备基于第一阈值进行公共陆地移动网选择和/或小区选择。
更进一步地，能力信息可以来自如下一项或多项设备：终端设备、接入网设备或数据存储网元。
应理解，通信装置500中涉及的处理模块501可以由收发器或收发器相关电路组件实现，可以为收发器或收发单元。收发模块502可以由处理器或处理器相关电路组件实现，可以为处理器或处理单元。处理模块501与收发模块502可以集成为同一个处理模块。
需要说明的是，通信装置500可以是第一网元，也可以是可设置于第一网元中的芯片(系统)或其他部件或组件，还可以是包含第一网元的装置，本申请对此不做限定。
此外，通信装置500的技术效果可以参考图2中提供的通信方法的技术效果，此处不再赘述。
示例性地，图6是本申请实施例提供的通信装置的结构示意图三。
示例性地，图6为本申请实施例提供的通信装置的结构示意图三。如图6所示，通信装置600包括：处理器601。处理器601可以和存储器(图6中并未画出)耦合，其中，处理器用于执行图6中示出的通信方法。
为了便于说明，图6仅示出了该通信装置的主要部件。
一些实施例中，通信装置600可适用于图1中所示出的通信系统中，执行图2或者图3中所示出的通信方法，执行终端设备获取第一阈值并基于第一阈值进行公共陆地移动网选择和/或小区选择的功能，或者执行第一网元获取第一阈值或者第一阈值的配置信息，并向终端设备发送第一阈值或第一阈值的配置信息的功能。
可选地，通信装置600还可以包括：存储器603。
其中，存储器603用于存储计算机指令，当处理器601执行该计算机指令时，以使该通信装置600执行图2或者图3提供的任一种通信方法。
下面结合图6对通信装置600的各个构成部件进行具体的介绍：
其中，处理器是通信装置600的控制中心，可以是一个处理器601，也可以是多个处理元件的统称。例如，处理器是一个或多个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。
可选地，处理器601可以通过运行或执行存储在存储器603内的软件程序，以及调用存储在存储器603内的数据，执行通信装置600的各种功能。
在具体的实现中，作为一种实施例，处理器可以包括一个或多个CPU，例如图6中所示出的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置600也可以包括多个处理器，例如图6中所示的处理器601和处理器602(在图6中用虚线画出)。这些处理器中的每一个可以是一个单核处理器(single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
其中，所述存储器603用于存储执行本申请方案的软件程序，并由处理器601和处理器602来控制执行，具体实现方式可以参考上述方法实施例，此处不再赘述。
可选地，存储器603可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器603可以和处理器601集成在一起，也可以独立存在，并通过通信装置600的接口电路(图6中未示出)与处理器601耦合，本申请实施例对此不作具体限定。
可选地，通信装置600还包括：收发器604。收发器604用于与其他通信装置之间的通信。例如，通信装置600为终端设备，收发器604可以用于与非陆地通信网络中属于同一个小区集合的非陆地传输节点通信，或者与另一个终端设备通信。又例如，通信装置600为非陆地通信网络中属于同一个小区集合的非陆地传输节点，收发器604可以用于与终端设备通信、与非陆地通信网络中属于同一个小区集合的其他非陆地传输节点通信或者于其他非陆地通信网络中的非陆地传输节点通信。
可选地，收发器604可以包括接收器和发送器(图6中未单独示出)。其中，接收器用于实现接收功能，发送器用于实现发送功能。
可选地，收发器604可以和处理器601集成在一起，也可以独立存在，并通过通 信装置600的接口电路(图6中未示出)与处理器601耦合，本申请实施例对此不作具体限定。
需要说明的是，图6中示出的通信装置600的结构并不构成对该通信装置的限定，实际的通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
需要说明的是，通信装置600可以是终端设备，也可以是可设置于终端设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备的装置，本申请对此不做限定。通信装置600也可以是移动通信网络中的接入网设备或者核心网网元，也可以是可设置于接入网设备或者核心网网元中的芯片(系统)或其他部件或组件，还可以是包含接入网设备或者核心网网元中的装置，本申请对此不做限定。
此外，通信装置600的技术效果可以参考图2中的通信方法的技术效果，此处不再赘述。
此外，通信装置600的技术效果可以参考上述方法实施例所述的通信方法的技术效果，此处不再赘述。
应理解，在本申请实施例中的处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
上述实施例，可以全部或部分地通过软件、硬件(如电路)、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一 个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系，但也可能表示的是一种“和/或”的关系，具体可参考前后文进行理解。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出 来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种通信方法，其特征在于，应用于终端设备，所述通信方法包括：
    获取第一阈值，所述第一阈值对应的信道状态优于第二阈值对应的信道状态，所述第二阈值用于所述终端设备的小区选择且不用于公共陆地移动网选择；
    基于所述第一阈值进行公共陆地移动网选择和/或小区选择。
  2. 根据权利要求1所述的通信方法，其特征在于，所述获取第一阈值，包括：
    基于第一参数确定所述第一阈值，所述第一参数包括基线值、步长、最大步数和/或边界阈值，所述基线值为所述第一阈值的初始值，所述步长与步数用于确定所述第一阈值的变化量，所述最大步数为所述步数的最大值，所述边界阈值为所述第一阈值的最大值和/或最小值，所述步长为所述第一阈值的变化量的最小值。
  3. 根据权利要求1或2所述的通信方法，其特征在于，所述基于所述第一阈值进行公共陆地移动网选择和/或小区选择，包括：
    确定实际信道状态达到所述第一阈值对应的信道状态；
    选择所述实际信道状态对应的公共陆地移动网和/或小区传输数据。
  4. 根据权利要求1所述的通信方法，其特征在于，所述获取第一阈值，包括：
    接收来自第一网元的所述第一阈值或所述第一阈值的配置信息，所述第一网元包括接入网设备或核心网网元，所述第一阈值的配置信息用于计算所述第一阈值。
  5. 根据权利要求4所述的通信方法，其特征在于，所述第一网元为接入网设备，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为系统消息。
  6. 根据权利要求4所述的通信方法，其特征在于，所述第一网元为接入网设备，所述第一阈值或者所述第一阈值的配置信息承载于第一消息中，所述第一消息为RRC消息。
  7. 根据权利要求4所述的通信方法，其特征在于，所述第一网元为核心网网元，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为NAS消息。
  8. 根据权利要求6或7所述的通信方法，其特征在于，所述通信方法还包括：
    向所述第一网元发送反馈信息，所述反馈信息用于指示所述终端设备已成功接收所述第一消息。
  9. 根据权利要求6-8中任一所述的通信方法，其特征在于，还包括：
    发送能力信息，所述能力信息用于指示所述终端设备具备基于所述第一阈值进行公共陆地移动网选择和/或小区选择的能力。
  10. 一种通信方法，其特征在于，应用于第一网元，所述通信方法包括：
    获取第一阈值或所述第一阈值的配置信息，所述第一阈值对应的信道状态优于第二阈值对应的信道状态，所述第一阈值用于终端设备的公共陆地移动网选择和/或小区选择，所述第二阈值用于所述终端设备的小区选择且不用于公共陆地移动网选择，所述第一阈值的配置信息用于计算所述第一阈值；
    向所述终端设备发送所述第一阈值或所述第一阈值的配置信息。
  11. 根据权利要求10所述的通信方法，其特征在于，所述第一网元为接入网设备， 所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为系统消息。
  12. 根据权利要求10所述的通信方法，其特征在于，所述第一网元为接入网设备，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为RRC消息。
  13. 根据权利要求10所述的通信方法，其特征在于，所述第一网元为核心网网元，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为NAS消息。
  14. 根据权利要求12或13所述的通信方法，其特征在于，所述通信方法还包括：
    接收反馈信息，所述反馈信息用于指示所述终端设备已成功接收所述第一消息。
  15. 根据权利要求12-14中任一所述的通信方法，其特征在于，所述通信方法还包括：
    接收能力信息，所述能力信息用于指示所述终端设备具备基于所述第一阈值进行公共陆地移动网选择和/或小区选择的能力。
  16. 根据权利要求15所述的通信方法，其特征在于，所述能力信息来自如下一项或多项设备：所述终端设备、接入网设备或数据存储网元。
  17. 一种通信装置，其特征在于，应用于终端设备，所述通信装置包括：处理模块和收发模块，其中，
    所述处理模块，用于获取第一阈值，所述第一阈值对应的信道状态优于第二阈值对应的信道状态，所述第二阈值用于所述终端设备的小区选择且不用于公共陆地移动网选择；
    所述收发模块，用于基于所述第一阈值进行公共陆地移动网选择和/或小区选择。
  18. 根据权利要求17所述的通信装置，其特征在于，所述处理模块用于：
    基于第一参数确定所述第一阈值，所述第一参数包括基线值、步长、最大步数和/或边界阈值，所述基线值为所述第一阈值的初始值，所述步长与步数用于确定所述第一阈值的变化量，所述最大步数为所述步数的最大值，所述边界阈值为所述第一阈值的最大值或最小值，所述步长为所述第一阈值的变化量的最小值。
  19. 根据权利要求17所述的通信装置，其特征在于，所述处理模块用于：
    接收来自第一网元的所述第一阈值或所述第一阈值的配置信息，所述第一网元包括接入网设备或核心网网元，所述第一阈值的配置信息用于计算所述第一阈值。
  20. 根据权利要求19所述的通信装置，其特征在于，所述第一网元为接入网设备，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为系统消息。
  21. 根据权利要求19所述的通信装置，其特征在于，所述第一网元为接入网设备，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为RRC消息。
  22. 根据权利要求19所述的通信装置，其特征在于，所述第一网元为核心网网元，所述第一阈值或所述第一阈值的配置信息承载于第一消息中，所述第一消息为NAS消息。
  23. 根据权利要求21或22所述的通信装置，其特征在于，所述收发模块用于：
    向所述第一网元发送反馈信息，所述反馈信息用于指示所述终端设备已成功接收所述第一消息。
  24. 根据权利要求21-23中任一所述的通信装置，其特征在于，所述收发模块用于：
    发送能力信息，所述能力信息用于指示所述终端设备具备基于所述第一阈值进行公共陆地移动网选择和/或小区选择的能力。
  25. 一种通信装置，其特征在于，应用于第一网元，所述通信装置包括：处理模块和收发模块；其中，
    所述处理模块，用于获取第一阈值或所述第一阈值的配置信息，所述第一阈值对应的信道状态优于第二阈值对应的信道状态，所述第一阈值用于终端设备的公共陆地移动网选择和/或小区选择，所述第二阈值用于所述终端设备的小区选择且不用于公共陆地移动网选择，所述第一阈值的配置信息用于计算所述第一阈值；
    所述收发模块，用于向所述终端设备发送所述第一阈值或所述第一阈值的配置信息。
  26. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合；
    所述处理器，用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如权利要求1-16中任一项所述的通信方法。
  27. 一种通信装置，其特征在于，包括：处理器和接口电路；其中，
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器用于运行所述代码指令以执行如权利要求1-16中任一项所述的通信方法。
  28. 一种通信装置，其特征在于，所述通信装置包括处理器和收发器，所述收发器用于所述通信装置和其他通信装置之间进行信息交互，所述处理器执行程序指令，用以执行如权利要求1-16中任一项所述的通信方法。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得所述计算机执行如权利要求1-16中任一项所述的通信方法。
  30. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得所述计算机执行如权利要求1-16中任一项所述的通信方法。
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