CN116709443A - Network selection method, device and storage medium - Google Patents

Network selection method, device and storage medium Download PDF

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Publication number
CN116709443A
CN116709443A CN202211466767.4A CN202211466767A CN116709443A CN 116709443 A CN116709443 A CN 116709443A CN 202211466767 A CN202211466767 A CN 202211466767A CN 116709443 A CN116709443 A CN 116709443A
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China
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cell
terminal equipment
combinations
base station
combination
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CN202211466767.4A
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Chinese (zh)
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CN116709443B (en
Inventor
魏旭凯
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Honor Device Co Ltd
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Honor Device Co Ltd
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Priority to CN202211466767.4A priority Critical patent/CN116709443B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a network selection method, a network selection device and a storage medium. The method comprises the following steps: the terminal equipment resides in a first cell; the terminal equipment acquires the information of N cells; the terminal equipment obtains M cell groups in N cells based on the frequency band combination capability information of the terminal equipment; the terminal equipment obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations; when the target cell group comprises a second cell and a third cell, the terminal equipment is switched from the first cell to the second cell; and adding a third cell for the terminal equipment when the bandwidth of the terminal equipment in the second cell does not meet the service requirement. In this way, after the terminal equipment is accessed to the second cell and the third cell, the target cell combination can provide a higher combined network rate value for the terminal equipment so as to improve the data transmission rate of the terminal equipment.

Description

Network selection method, device and storage medium
Technical Field
The present application relates to the field of terminal technologies, and in particular, to a network selection method, a device, and a storage medium.
Background
With the development of mobile communication technology, mobile communication networks are widely used in the communication field. The terminal device may support different network modes of the communication network, including but not limited to GSM (global system for mobile communication, global system for mobile communications, 2G), TD-SCDMA (time division-synchronous code division multiple access, time division-synchronous code division multiple access, 3G), LTE (long term evolution, long term evolution, 4G), NR (new radio, 5G), etc.
The number of users of mobile terminals is increasing, as are the business requirements of the end users. Carrier aggregation (carrier aggregation, CA) and dual connectivity (evolved nodeB dual connectivity, ENDC) techniques can improve the transmission bandwidth of a mobile network to some extent, improving network transmission rate and network capacity. Wherein, CA technology can be aggregated by a plurality of continuous or discontinuous carrier units (Component Carrier, CC) to obtain a larger transmission bandwidth; the ENDC technology can support the terminal equipment to access the 4G network and the 5G network simultaneously so as to improve the network rate.
In a possible implementation, the terminal equipment can preferentially stay in the main cell with the best signal strength in the process of network-resident activation, and a CA combination or an ENDC combination is added to the auxiliary cell to improve the data transmission rate of the mobile phone. In some cases, after the terminal device resides in the primary cell with the best signal strength, the situation that the data transmission rate of the terminal device is not high may occur, which affects the operation of the service in the terminal device.
Disclosure of Invention
The embodiment of the application provides a network selection method, a network selection device and a storage medium, which are applied to the technical field of terminals, and a target cell combination with the maximum combined network speed value is obtained by calculating the combined network speed values of a plurality of cell combinations, and terminal equipment resides in a cell of the target cell combination, so that a higher network speed is obtained.
In a first aspect, an embodiment of the present application provides a network selection method. The method comprises the following steps: the terminal equipment resides in a first cell; the terminal equipment acquires the information of N cells; the terminal equipment obtains M cell groups in N cells based on the frequency band combination capability information of the terminal equipment; the terminal equipment obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations; when the target cell group comprises a second cell and a third cell, the terminal equipment is switched from the first cell to the second cell; and adding a third cell for the terminal equipment when the bandwidth of the terminal equipment in the second cell does not meet the service requirement. In this way, after the terminal equipment is accessed to the second cell and the third cell, the target cell combination can provide a higher combined network rate value for the terminal equipment so as to improve the data transmission rate of the terminal equipment.
In one possible implementation manner, the cell network speed value of any cell is obtained by inquiring, by the terminal device, in a preset correspondence table based on one or more of the following related information of any cell: cell frequency band, modulation order, number of carriers, multiple input multiple output MIMO parameters, link direction, subcarrier spacing, bandwidth of single carrier element CC or number of carrier elements CC. In this way, the terminal device can accurately obtain the cell network speed value of any cell based on the table lookup.
In one possible implementation manner, the terminal device obtains, based on information of each cell in the M cell combinations, a target cell combination in which a combined network rate value in the M cell combinations meets a preset condition, including: the terminal equipment screens out the cell combinations of which the cell signal intensity is lower than a first threshold value in the M cell combinations to obtain L cell combinations; the terminal equipment calculates and obtains a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell; traversing the L cell combinations by the terminal equipment, and calculating to obtain a combined network speed value of the L cell combinations; and the terminal equipment screens the target cell combinations meeting preset conditions from the combined network rate values of the L cell combinations. In this way, the terminal equipment can obtain a combined network speed value based on the cell network speed values of the cells, and obtain the target cell combination meeting the preset condition, thereby improving the accuracy of the calculation result.
In one possible implementation, the combined network speed value for any cell combination satisfies the following condition: wherein R is a combined network speed value of a cell combination; n is the number of cells in the cell group, P i Is the signal strength percentage of the i-th cell; r is R i Is the cell network rate value of the i-th cell. In this way, the terminal device is enabled to obtain a combined network rate value that can be provided by the cell combination under the current channel quality.
In one possible implementation, the target cell group that satisfies the preset condition includes a cell group corresponding to a maximum combined network speed value of the L cell groups. In this way, the combined network rate value provided by the target cell combination to the terminal device may be increased.
In one possible implementation, before the terminal device resides in the first cell, the method further comprises: the terminal equipment detects a network state change event; the network state change event includes at least one of: a terminal device power-on event, a shut-down flight mode event or a card insertion event. In this way, the terminal equipment identifies different scenes, and when the network state changes, the terminal equipment takes the cell in the target cell combination as a main cell and an auxiliary cell, and enters the network rate after the network is promoted.
In a second aspect, an embodiment of the present application provides a network selection method. The method comprises the following steps: the base station indicates the terminal equipment to reside in a first cell; the base station acquires information of N cells; the base station sends a first signaling for inquiring the frequency band combination capability information to the terminal equipment; the base station obtains M cell groups in N cells based on the frequency band combination capability information from the terminal equipment; the base station obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations; when the target cell group comprises a second cell and a third cell, the base station instructs the terminal device to switch from the first cell to the second cell; and when the bandwidth in the second cell does not meet the service requirement, the base station adds a third cell for the terminal equipment. In this way, after the terminal equipment is accessed to the second cell and the third cell, the target cell combination can provide a higher combined network rate value for the terminal equipment so as to improve the data transmission rate of the terminal equipment. Meanwhile, the base station can provide larger operation capability, so that the network residence efficiency is improved.
In one possible implementation manner, the cell network speed value of any cell is obtained by inquiring, by the base station, in a preset correspondence table based on one or more of the following related information of any cell: cell frequency band, modulation order, number of carriers, multiple input multiple output MIMO parameters, link direction, subcarrier spacing, bandwidth of single carrier element CC or number of carrier elements CC. In this way, the cell network rate value of any one cell can be accurately obtained based on the table look-up.
In one possible implementation manner, the base station obtains a target cell combination with a combined network rate value satisfying a preset condition in the M cell combinations based on information of each cell in the M cell combinations, including: the base station screens out cell combinations with the cell signal intensity lower than a first threshold value in the M cell combinations to obtain L cell combinations; the base station calculates a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell; traversing the L cell combinations by the base station, and calculating to obtain a combined network speed value of the L cell combinations; and the base station screens the target cell combinations meeting preset conditions from the combined network rate values of the L cell combinations. Thus, the base station can obtain a combined network speed value based on the cell network speed values of the cells, and obtain a target cell combination meeting preset conditions, thereby improving the accuracy of the calculation result.
In one possible implementation, the combined network rate value in any cell combination satisfies the following condition:wherein R is a combined network speed value of a cell combination; n is the number of cells in the cell group, P i Is the signal strength percentage of the i-th cell; r is R i Is the cell network rate value of the i-th cell. In this way, the base station calculates a combined network rate value that can be provided by the cell combination under the current channel quality.
In one possible implementation, the target cell group that satisfies the preset condition includes a cell group corresponding to a maximum combined network speed value of the L cell groups. In this way, the combined network rate value provided by the target cell combination to the terminal device may be increased.
In one possible implementation, before the base station indicates that the terminal device resides in the first cell, the method further includes: the base station receives a network state change event reported by the terminal equipment; the network state change event includes at least one of: a terminal device power-on event, a shut-down flight mode event or a card insertion event. In this way, the base station can identify different scenes, and when the network state changes, the base station instructs the terminal equipment to access the second cell and the third cell in the target cell combination, and the network rate after the network is promoted.
In a third aspect, an embodiment of the present application provides a terminal device, which may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. The terminal device may be a mobile phone, a smart television, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like.
The terminal device includes: comprising the following steps: a processor and a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory to cause the terminal device to perform a method as in the first or second aspect.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program. The computer program, when executed by a processor, implements a method as in the first or second aspect.
In a fifth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when run, causes a computer to perform the method as in the first or second aspect.
In a sixth aspect, an embodiment of the application provides a chip comprising a processor for invoking a computer program in a memory to perform a method as in the first or second aspect.
It should be understood that, the third aspect to the sixth aspect of the present application correspond to the technical solutions of the first aspect or the second aspect of the present application, and the advantages obtained by each aspect and the corresponding possible embodiments are similar, and are not repeated.
Drawings
FIG. 1 is a flow diagram of a network selection method in a possible implementation;
fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a network selection method according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a network selection method according to an embodiment of the present application;
fig. 6 is a schematic flow chart of a network selection method according to an embodiment of the present application;
Fig. 7 is a schematic flow chart of a network selection method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a network selecting device according to an embodiment of the present application.
Detailed Description
For purposes of clarity in describing the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.
The "at … …" in the embodiment of the present application may be an instant when a certain situation occurs, or may be a period of time after a certain situation occurs, which is not particularly limited. In addition, the display interface provided by the embodiment of the application is only used as an example, and the display interface can also comprise more or less contents.
With the development of mobile communication technology, mobile communication networks are widely used in the communication field. The terminal device may support different network modes of the communication network, including but not limited to GSM, TD-SCDMA, LTE, NR, etc.
The number of users of mobile terminals is increasing, as are the business requirements of the end users. The CA technology and the ENDC technology can improve the transmission bandwidth of the mobile network to a certain extent, and improve the network transmission rate and the network capacity. CA technology may be aggregated by multiple contiguous or non-contiguous carrier units (Component Carrier, CC) to obtain a larger transmission bandwidth; the ENDC technology can support the terminal equipment to access the 4G network and the 5G network simultaneously so as to improve the network rate.
In a possible implementation, the process of the terminal device in network residence activation may be as shown in fig. 1, where the terminal device may reside in a primary cell with high signal strength, and add a secondary cell to form a CA and ENDC combination, and the possible implementation may include the following steps:
S101, detecting a network state change event by the terminal equipment.
The network state change event is used for indicating the terminal equipment to conduct cell search. For example, network state change events may include power on events, off flight mode events, plug-in events, and the like. The terminal device may perform a cell search after detecting a network state change event. The foregoing is merely illustrative of a network state change event, and does not constitute a limitation on an event for triggering cell search, and in the embodiment of the present application, cell search may be performed by other event-triggered terminals.
S102, the terminal equipment performs cell search according to the channel quality and resides in the main cell.
After detecting the network state change event, the terminal device may perform a cell search procedure and a cell selection procedure. In the cell searching process, cell searching can be performed according to information of a historical cell of the terminal equipment before a network state change event, when no resident cell exists in the historical cell, the terminal equipment can perform full-frequency-band frequency sweeping on a frequency point of the cell according to a frequency band supported by the terminal equipment to obtain relevant information of the cell, for example: PIC (physical cell ID, physical cell identities), SIB (system message, master information block), MIB (system message, system information blocks), and the like.
In the cell selection process, the terminal device may measure signal parameters of the cell, for example: RSRP (received power of reference signal, reference signal receiving power) and/or RSRQ (received quality of reference signal, reference signal receiving quality), etc. When the signal parameters of the cell meet the residence conditions, the terminal equipment resides in the cell, wherein when the terminal equipment selects the main cell, the priority of the cell with high channel quality is higher than that of the cell with low channel quality, and the main cell can be the cell with highest signal intensity in the cells searched by the terminal equipment.
S103, the terminal equipment reports the UE capability based on the UE capability query message of the base station.
When the traffic load of the terminal device is large, the bandwidth of a single camping cell may not be sufficient to support the terminal device to perform network traffic. The base station may add a secondary cell composition CA combination or an ENDC combination to the terminal device to increase the network bandwidth. The base station may issue a terminal device capability query (UE capability enqiry, also referred to as UE capability query) message to the terminal device. The capability preset of the terminal device is configured on the terminal device, and in response to the capability query message of the terminal device, the terminal device can query the capability configured by itself and report the capability message of the terminal device (UE capability information, also called UE capability message) to the base station. The terminal device capability message may include: networking band information supported by the terminal device, for example, a band combination supporting CA combination, and a band combination supporting ENDC combination.
S104, the terminal equipment receives the auxiliary cell adding instruction of the base station.
The base station may issue a secondary cell measurement message before instructing the terminal device to access the secondary cell. The terminal equipment measures signal parameters of the auxiliary cell according to the auxiliary cell measurement message and sends the auxiliary cell measurement report to the base station. And the base station sends an auxiliary cell adding instruction to the terminal equipment according to the auxiliary cell measurement report instruction, wherein the auxiliary cell adding instruction comprises a cell ID, frequency point information and the like of the auxiliary cell.
The terminal equipment executes the adding operation of the auxiliary cell according to the auxiliary cell adding instruction, so that the terminal equipment can add the auxiliary cell under the condition of residing in the main cell, and the purpose of providing network service for the terminal equipment by the base station of the main cell and the base station of the auxiliary cell is realized.
In a possible implementation, after the terminal equipment resides in the main cell with the best signal strength, and the cell with the best signal strength and the auxiliary cell form the combination of CA and ENDC, the situation that the data transmission rate of the terminal equipment is not high may still exist. This is because, in a possible implementation, the terminal device performs step S102 to camp on the network based on the signal strength, and obtains the cell with the highest signal strength as the primary cell. The terminal device executes step S104 to add the secondary cell based on the addition instruction issued by the base station. When the combined network rate of the cell combination is lower, the situation that the data transmission rate of the terminal equipment is not high may occur, which affects the operation of the service in the terminal equipment.
In view of the above, the embodiment of the application provides a network selection method, which obtains a cell combination with high combined network speed value by calculating the combined network speed value of a main cell and an auxiliary cell under CA combination and/or ENDC combination; the terminal equipment resides on a main cell in a cell combination with high combined network speed value, and other cells in the cell combination are added as auxiliary cells. Thus, because the combined network rate value of the cell group is high, when the terminal equipment is accessed into the main cell and the auxiliary cell of the combined cell, the network rate which can be provided by the combined cell is improved, and the data transmission rate of the terminal equipment is further improved.
Before describing the technical solution of the embodiment of the present application, a communication system in the embodiment of the present application will be described first with reference to fig. 2. Fig. 2 shows a schematic diagram of a communication system to which an embodiment of the present application is applicable. As shown in fig. 2:
a plurality of network devices and terminal devices may be included in the communication system. A network device, which may also be referred to as an access network device, is an entity on the network side for transmitting or receiving signals. The network device may be, for example, an LTE base station, such as an evolved NodeB (eNB or e-NodeB), or an NR base station, such as a new radio controller (new radio controller, NRcontroller), gNB. Alternatively, the network device may also be a centralized network element (centralized unit), a remote radio module, a micro base station, a relay (relay), a distributed network element (distributed unit), a receiving point (transmission reception point, TRP) or a transmitting point (transmission point, TP), or any other wireless access device, which is not limited by the embodiments of the present application.
The terminal device may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. The terminal device may be a mobile phone, a smart television, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like.
It will be appreciated that the base station may manage a plurality of cells, and the embodiments of the present application are illustrated with circles representing the scope of cells, and this example does not constitute a limitation on the specific type of cell area.
It should be noted that, in the embodiment of the present application, a network device may be taken as an example of a base station, where the number of base stations and terminal devices may be one or more, and the number of base stations and terminals in the communication system shown in fig. 2 is merely an adaptive example, which is not limited in the present application.
The above described communication system may be used to support fourth generation (fourth generation, 4G) access technologies, such as long term evolution (long term evolution, LTE) access technologies; alternatively, the communication system may support fifth generation (5G) access technologies, such as New Radio (NR) access technologies; alternatively, the communication system may be used to support third generation (3G) access technologies, such as universal mobile telecommunications system (universalmobile telecommunications system, UMTS) access technologies; or the communication system may also be used to support second generation (second generation, 2G) access technologies, such as the global system for mobile communications (global system formobile communications, GSM) access technology; alternatively, the communication system may be used in a communication system supporting a plurality of radio technologies, such as LTE technology and NR technology. In addition, the communication system may also be applicable to narrowband internet of things (Narrow Band-Internet of Things, NB-IoT), enhanced data rates for GSM evolution (EnhancedData rate for GSM Evolution, EDGE), wideband code Division multiple access (Wideband Code DivisionMultiple Access, WCDMA), code Division multiple access 2000 (Code Division Multiple Access, CDMA 2000), time Division synchronous code Division multiple access (Time Division-Synchronization Code DivisionMultiple Access, TD-SCDMA), long term evolution (Long Term Evolution, LTE), and future-oriented communication technologies.
The base station in fig. 2 may be used to support terminal access, and may be, for example, a base transceiver station (base transceiver station, BTS) and a base station controller (base stationcontroller, BSC) in a 2G access technology communication system, a node B and a radio network controller (radionetwork controller, RNC) in a 3G access technology communication system, an evolved node B (eNB) in a 4G access technology communication system, a next generation base station (next generation nodeB, gNB) in a 5G access technology communication system, a transmission reception point (transmission reception point, TRP), a relay node (relay node), an Access Point (AP), and so on. For convenience of description, in all embodiments of the present application, a device for providing a terminal with a wireless communication function is collectively referred to as a network device or a base station.
In order to better understand the embodiments of the present application, the following describes the structure of the terminal device according to the embodiments of the present application:
fig. 3 shows a schematic structural diagram of the terminal device 100. The terminal device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriberidentification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.
It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal device 100. In other embodiments of the application, terminal device 100 may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processingunit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.
The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.
A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it may be called from memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.
In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (subscriber identity module, SIM) interface, and/or a universal serial bus (universal serial bus, USB) interface, among others.
It should be understood that the interfacing relationship between the modules illustrated in the embodiment of the present application is illustrated schematically, and does not constitute a structural limitation of the terminal device 100. In other embodiments of the present application, the terminal device 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.
The charge management module 140 is configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 140 may receive a charging input of a wired charger through the USB interface 130. In some wireless charging embodiments, the charge management module 140 may receive wireless charging input through a wireless charging coil of the terminal device 100. The charging management module 140 may also supply power to the terminal device through the power management module 141 while charging the battery 142.
The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be configured to monitor battery capacity, battery cycle number, battery health (leakage, impedance) and other parameters. In other embodiments, the power management module 141 may also be provided in the processor 110. In other embodiments, the power management module 141 and the charge management module 140 may be disposed in the same device.
The wireless communication function of the terminal device 100 can be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.
The terminal device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.
The display screen 194 is used to display images, videos, and the like. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrixorganic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot lightemitting diodes, QLED), or the like. In some embodiments, the terminal device 100 may include 1 or N display screens 194, N being a positive integer greater than 1.
The terminal device 100 may implement a photographing function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.
The terminal device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playing, recording, etc.
The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or a portion of the functional modules of the audio module 170 may be disposed in the processor 110.
The SIM card interface 195 is used to connect a SIM card. The SIM card may be contacted and separated from the terminal apparatus 100 by being inserted into the SIM card interface 195 or by being withdrawn from the SIM card interface 195. The terminal device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support Nano SIM cards, micro SIM cards, and the like. The same SIM card interface 195 may be used to insert multiple cards simultaneously. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The terminal device 100 interacts with the network through the SIM card to realize functions such as call and data communication. In some embodiments, the terminal device 100 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the terminal device 100 and cannot be separated from the terminal device 100.
The following describes the network selecting method provided by the embodiment of the application in detail with reference to the accompanying drawings. The "at … …" in the embodiment of the present application may be an instant when a certain situation occurs, or may be a period of time after a certain situation occurs, which is not particularly limited.
Exemplary, the network selection method according to the embodiment of the present application is described below with reference to fig. 4, and fig. 4 shows a schematic flow diagram of the network selection method according to the embodiment of the present application, as shown in fig. 4:
s401, the terminal equipment resides in a first cell.
The first cell may be the cell where the signal strength where the terminal device can camp is the highest. After detecting the network state change event, the terminal equipment can perform the network residence process of cell search and cell selection. The cell search process and the cell selection process may refer to the description of step S102, and the description of this embodiment of the present application is omitted. After the terminal equipment performs cell search and cell selection, the first cell with the highest signal strength can be obtained according to the channel quality of the cell, and the terminal equipment resides in the first cell.
The network state change event is used for indicating the terminal equipment to conduct cell search. The network state change event includes at least one of: a terminal device power-on event, a shut-down flight mode event or a card insertion event, etc. It will be appreciated that. When operations such as starting up, closing the flight mode or inserting a card are executed, the network state of the terminal equipment is changed, and the terminal equipment needs to reside again.
S402, the terminal equipment acquires information of N cells, wherein the information of any cell comprises the following information: cell signal strength, cell frequency band and cell network speed value, N is a natural number.
When the terminal device performs cell search and cell selection, the terminal device may obtain information of N cells. The N cells may be understood as all or part of the cells that can be searched by the terminal device under the coverage of the base station, where the N cells may include a first cell in which the terminal device resides and a neighboring cell of the first cell. The information of the cell may include: cell signal strength, cell frequency band, and cell network rate values.
The signal intensity of the cell can be used for representing the channel quality of the cell, and the terminal equipment can measure and obtain the signal intensity of N cells; the cell frequency band can be a frequency band supported by terminal equipment corresponding to the frequency point of the cell, and the terminal equipment can acquire the cell frequency bands of N cells from the base station; the cell network speed value is the maximum theoretical speed value which can be achieved by the cell in the frequency band, and the cell network speed value of any cell is obtained by inquiring the terminal equipment in a preset corresponding relation table based on one or more of the following related information of any cell: cell frequency band, modulation order, carrier number, multiple Input Multiple Output (MIMO) parameter, link direction, subcarrier spacing, bandwidth of single carrier unit (CC) or carrier unit (CC) number, etc. The corresponding relation table can be stored in the terminal equipment, and the terminal equipment obtains a cell network speed value based on the table lookup of the related information; the corresponding relation table may also be stored in the base station, and the terminal device obtains the cell network speed value issued by the base station, which is not limited in the embodiment of the present application.
For example, the terminal device may support different networking modes, such as CA combination and ENDC combination. In the networking process, two base stations can serve the same terminal equipment at the same time. For terminal equipment, one of the base stations is a main base station, and a serving cell provided by the main base station is a main cell (PCell); the other base station is a secondary base station, and the serving cell provided by the secondary base station is a secondary cell (SCell). In the networking mode of CA, the primary cell and the secondary cell accessed by the terminal equipment are LTE cells, and the LTE cells are wireless areas controlled by LTE base stations. In the networking mode of the ENDC, a main cell accessed by the terminal equipment is an LTE cell, a secondary cell is an NR cell, and the NR cell is a wireless area controlled by an NR base station. Because the network system applicable to the LTE cell and the NR cell are different, the LTE cell and the NR cell are distinguished in a preset corresponding relation table.
For example, the correspondence table of the cell network rate values of the LTE cell may be as shown in table 1:
table 1 correspondence table of cell network rate values for LTE cells
It can be understood that the terminal device can execute the flow of the sweep frequency when the terminal device resides in the network, after the sweep frequency is finished, the terminal device can send and acquire the cell corresponding to each frequency point and the parameter information related to the cell to the base station, and the base station sends the information to the terminal device, so that the terminal device can acquire the information of the cell.
For example, taking an LTE cell as an example, the relevant information of the LTE cell that may be acquired by the terminal device includes at least one of the following: modulation order, number of carriers, MIMO (multiple input multiple output count), multiple input multiple output, and slot duty cycle. Wherein, the modulation order can be used to characterize the information quantity represented by the symbol (symbol), the higher the modulation order, the more information represented by a single symbol, the faster the network rate can be provided; the carrier number is used for representing the number of carriers where the terminal equipment resides; the number of the transmission paths on the single carrier is characterized by MIMO, and can be determined by the number of the antennas of the terminal equipment and the base station, and the larger the MIMO is, the stronger the transmission capacity of the single carrier is; the time slot duty ratio is used to represent the ratio of the frequency bandwidths occupied by the uplink and the downlink, for the Frequency Division Duplex (FDD) frequency band, the uplink and the downlink each have exclusive frequency bandwidths, the mutual influence is not 1, and for the Time Division Duplex (TDD) frequency band, the uplink and the downlink share a frequency bandwidth, so that the uplink and the downlink are allocated with time. And the terminal equipment obtains a cell network speed value corresponding to the LTE cell by looking up a table according to the related information. For example: when the modulation order in the related information of the LTE cell is 256QAM, the carrier number is 1, the MIMO value is 2, and the time slot duty ratio is 1, the terminal equipment can acquire the cell network speed value of the LTE cell as 201.6Mbps.
It should be noted that, the relevant information such as RB (resource block) number, subcarrier number, slot (slot), symbol (symbol) number, and non-data RE (resource element) discount may be a fixed value or have a corresponding relation with other relevant information. The number of subcarriers can be understood as the number of subcarriers obtained by dividing the frequency band of one frequency band; the interval of the subcarriers is related to the symbol length, the symbol length is a basic unit for transmitting data, and the number of the symbols can be obtained according to the number of the subcarriers; the time slot is used for transmitting a plurality of symbols; the RB number is used for representing the data quantity of all subcarrier transmissions in one time slot; the non-data RE discount is used to characterize the discount value of the amount of data that a single subcarrier transmits one symbol over a single slot. For example, for a frequency bandwidth of 20MHz, the number of RBs is 100, the number of subcarriers is 12, the number of slots is 2, the number of symbols is 7, and the non-data RE discount is 0.75. Therefore, the terminal device can determine the cell network rate value of the LTE cell according to parameters such as the modulation order, the carrier number, the MIMO and the time slot duty ratio.
For another example, the correspondence table of the cell network rate values of the NR cells may be as shown in table 2:
table 2 correspondence table of cell network rate values for NR cells
It can be appreciated that the terminal device may obtain relevant information of the NR cell: frequency bands (including FR1 and FR2, FR1 may characterize a low frequency band and FR2 may characterize a millimeter wave high frequency band), uplink/downlink (UL/DL), modulation order, subcarrier spacing μ, single CC (carrier unit, component carrier) bandwidth BW (j), CC number j, subframe ratio, and MIMO value. And the terminal equipment looks up a table according to the related information to obtain a cell network speed value corresponding to the NR cell. For example: the related information of the NR cell has the frequency band of FR1, the direction of DL, the modulation order of 256QAM, the subcarrier interval of 30KHz, the single CC bandwidth of 100, the CC number of 1, the subframe ratio of 0.7429 and the MIMO value of 4, and the cell network speed value obtained by looking up the NR cell is 1739.057132Mbps.
The reduction factor f (j) (the scale factor provides a reduction factor, the range of values may include 1, 0.8, 0.75 and 0.4), the target code rate R max (maximum target code rate of PDSCH MCS is 948/1024 approximately 0.9257813), spectral overhead OH (j) 、(maximum RB allocation number in bandwidth BW (j) corresponding to subcarrier spacing μ), OFDM (orthogonal frequency division multiplexing orthogonal frequency division multiplexing) symbol number and duration The relevant information (duration of average OFDM symbol in sub-frame of sub-carrier interval μ) can be constant or have a correspondence with other relevant information, such as reduction factor f for NR cells with frequency band FR1 and direction DL (j) Is 1, R max Is 12, OH (j) 0.14>273 OFDM symbol number 28, < >>Is 4 multiplied by 10 -5 . Therefore, the terminal equipment can determine the cell network speed value of the NR cell according to parameters such as frequency band, direction, modulation order, subcarrier interval, single CC bandwidth, CC number, subframe ratio and the like.
Tables 1 and 2 only show exemplary correspondence relationships between partial cell network speed values in the embodiments of the present application, and the correspondence relationship tables may be modified according to actual situations. The embodiments of the present application are not limited in this regard. In a possible implementation manner, the N cells may be information of the history cells searched when the terminal device performs step S401, and the terminal device obtains the cell signal strength, the cell frequency band and the cell network rate from the information of the history cells. Therefore, the network searching process of the terminal equipment can be reduced, and the network residence efficiency of the network selecting method is improved. In another possible implementation manner, the N cells may also be information of cells acquired by the terminal device in real time. The embodiments of the present application are not limited in this regard.
S403, the terminal equipment obtains M cell combinations in N cells based on the frequency band combination capability information of the terminal equipment, wherein the frequency band combination capability information comprises a plurality of groups of frequency band combinations, and the cell frequency band in any cell combination is consistent with one frequency band combination in the plurality of groups of frequency band combinations; m is a natural number.
The band combining capability is used for indicating the frequency bands which can be supported by the terminal equipment to be combined, the terminal equipment can obtain a UE capability message (UE capability information), the UE capability message can comprise band combining capability, and the terminal equipment can define the frequency band combination as a plurality of types such as CA frequency band combination, ENDC frequency band combination and the like according to the network system of carriers in the frequency band combination.
The band combining capability includes one or more band combinations, each of which may include one or more carriers, each of which may correspond to one or more bandwidths. After the terminal equipment acquires the information of the N cells, the information of the cells is matched with the frequency band combining capability, so that the N cells form M cell combinations, and the bandwidth is increased.
For example, taking an ENDC frequency band combination as an example, the frequency band combination supported by the frequency band combination capability of the terminal device may include: bc_3a+n41a can be understood as a combination of frequency bands consisting of LTE Band 3 and NR Band 41. The information of the cell may include: the frequency Band corresponding to the frequency point of Cell A is LTE Band 1; the frequency Band corresponding to the frequency point of the Cell B is LTE Band 3; the frequency Band corresponding to the frequency Band of Cell C is LTE Band 3; the frequency Band corresponding to the frequency Band of Cell D is NR Band 41; the frequency Band corresponding to the frequency Band of Cell E is NR Band 78. Then, the combination of cells in the N cells that may make up bc—3a+n41a may include: cell b+cell D and Cell c+cell D.
S404, the terminal equipment obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations.
After the combined network speed value is used for networking the cells, the cell combination can provide the network speed value for the terminal equipment in the current environment.
The terminal device may obtain a combined network speed value of any cell combination according to the cell network speed value and the signal strength of each cell in the cell combination. After traversing the combination of M cells, the terminal equipment obtains M combination network speed values. And the terminal equipment performs ascending or descending sorting treatment on the combined network speed values to obtain target cell combinations meeting preset conditions. The target cell combination of the preset condition may be a cell combination corresponding to a maximum combined network speed value in the M cell combinations.
The method for obtaining the combined network speed value of the cell combination according to the cell network speed value and the signal strength of each cell in any cell combination will be described in detail later in the embodiments of the present application, and will not be described in detail here.
S405, when the target cell combination includes the second cell and the third cell, the terminal device switches from the first cell to the second cell.
The target cell combination comprises a second cell and a third cell, wherein the first cell and the second cell are not the same cell. The terminal device may cease to camp on the first cell and switch from the first cell to the second cell.
It may be appreciated that the target cell combination may include one or more cells, and in the embodiment of the present application, taking the cell combination of the second cell and the third cell as the target cell combination, the number of cells in the target cell group is not limited in the embodiment of the present application.
The process of switching the terminal equipment from the first cell to the second cell may be: the terminal equipment sends a cell reselection request to a base station of a first cell; the base station of the first cell instructs the terminal equipment to reselect to the second cell; the terminal equipment establishes connection with the base station of the second cell, and the terminal equipment resides in the second cell.
S406, adding a third cell for the terminal equipment when the bandwidth of the terminal equipment in the second cell does not meet the service requirement.
It will be appreciated that the base station may add secondary cells to the terminal device when the traffic volume or load of the terminal device is above a preset threshold. The preset threshold may be related to a configuration parameter of the terminal device itself. And when the traffic or load of the terminal equipment is not higher than the preset threshold value, the base station can instruct the terminal equipment to release the auxiliary cell under the condition that the auxiliary cell is added to the terminal equipment.
In some embodiments, the terminal device resides in a second cell, and when the bandwidth of the second cell does not meet the service requirement, the base station of the second cell may add a secondary cell to the terminal device, so that the combination of the base station of the primary cell and the base station of the secondary cell provides a larger transmission network rate for the terminal device. The secondary cell may be a third cell.
Optionally, the process of adding the third cell to the terminal device by the base station of the second cell may be as shown in steps S501-S505 in fig. 5:
s501, the terminal equipment resides in a second cell.
The terminal device may obtain the target cell group according to steps S401-S405 and camp on the primary cell (second cell) of the target cell group.
S502, the terminal equipment receives a third cell adding instruction issued by the base station of the second cell.
The third cell addition indication may be a radio resource control (radio resource control, RRC) reconfiguration message, where the RRC reconfiguration message may include information of a secondary cell to be added, and the secondary cell to be added may be the third cell.
When the terminal equipment resides in the second cell and the bandwidth provided by the base station of the second cell does not meet the service requirement, the base station of the second cell issues a third cell adding instruction to the terminal equipment; the third cell addition indication is used for instructing the terminal device to add the third cell.
S503, the terminal equipment executes the adding operation of the third cell according to the third cell adding instruction.
The terminal device adds the third cell according to the RRC reconfiguration message. After the terminal device resides in the second cell of the target cell combination and adds the third cell, the base station may provide a higher combined network rate value for the terminal device.
For example, after the terminal device adds the second cell as the primary cell and adds the third cell as the secondary cell, the base station of the second cell and the base station of the third cell may provide services for the terminal device at the same time. For example: the second cell is an LTE cell, and the third cell is an NR cell. In a possible implementation manner, the data information is uplink data, the terminal device may send the data information to the base station, and the data information may be grouped into two paths of data information of LTE and NR after passing through a packet data convergence protocol (packet data convergence protocol, PDCP) layer. Subsequently, the LTE data information is sent to a base station of the LTE cell through an evolved UMTS terrestrial radio access media access control layer (universal terrestrial radio access media access control, E-UTRA MAC); the NR data information is sent to the base station of the NR cell via the NR MAC layer. In another possible implementation manner, the data information is downlink data, the base station may send the data information to the terminal device, and the terminal device may receive the two paths of data information of LTE and NR at the same time, where the sending method is similar to that of uplink data, and details are omitted here. In this way, the terminal device can receive the data information sent by the base station of the second cell and the base station of the third cell at the same time, and the terminal device can also send the data information to the base station of the second cell and the base station of the third cell respectively, thereby improving the network rate of the terminal device.
It will be appreciated that the terminal device may perform steps S401-S406 when the first cell and the second cell are not the same cell. The terminal equipment switches the resident cell from the first cell to the second cell, and adds a third cell for the terminal equipment. When the first cell and the second cell are the same cell, the terminal device may execute S401-S404, and the target cell group includes the first cell and the third cell, and at this time, the terminal device does not execute a cell reselection process, and the base station of the first cell may add the third cell to the terminal device. In this way, the cells with the highest combined network rate value can simultaneously provide network services for the terminal equipment so as to improve the data transmission rate of the terminal equipment.
The network selection mode provided by the embodiment of the application resides in the first cell through the terminal equipment; the terminal equipment acquires the information of N cells; the terminal equipment obtains M cell groups in N cells based on the frequency band combination capability information of the terminal equipment; the terminal equipment obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations; when the target cell group comprises a second cell and a third cell, the terminal equipment is switched from the first cell to the second cell; and adding a third cell for the terminal equipment when the bandwidth of the terminal equipment in the second cell does not meet the service requirement. In this way, the second cell and the third cell can form a target cell group with the highest combined network speed value, and after the terminal equipment is accessed into the second cell and the third cell, the target cell group can provide a higher combined network speed value for the terminal equipment so as to improve the data transmission speed of the terminal equipment.
Step S404 is further described below with reference to fig. 6, where the obtaining, by the terminal device, a target cell combination in which a combined network rate value in the M cell combinations meets a preset condition based on information of each cell in the M cell combinations includes:
s601, the terminal equipment screens out the cell combinations of which the cell signal intensity is lower than a first threshold value in the M cell combinations to obtain L cell combinations.
The information of the cell also comprises a first threshold value, wherein the first threshold value is a signal strength threshold value and is used for indicating the terminal equipment to execute cell reselection when the signal strength meets a threshold condition. The terminal device may measure the cell signal strengths of the cells in the M cell combinations, and screen the measured cell signal strengths. When the signal intensity of each cell in the cell combination is greater than or equal to a first threshold value, the terminal equipment reserves the cell combination; and when the signal strength of any cell in the cell combination is lower than a first threshold value, the terminal equipment screens out the cell combination. The terminal equipment obtains L cell combinations of which the signal strengths of the cells all meet a first threshold value.
It may be understood that, to improve the operation efficiency of the terminal device, the terminal device may screen out the acquired N cells when executing step S402 to obtain cells with signal strength not lower than the first threshold, and then the terminal device may execute step S403 to perform cell combination on cells that satisfy the first threshold. Therefore, the calculation of invalid cells can be reduced, and the networking efficiency of the network selection method is improved. The embodiments of the present application will not be described in detail.
S602, the terminal equipment calculates a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell.
The combined network rate value may be the sum of the network rate values of the cells in the cell group at the current channel quality. It will be appreciated that the combined network rate value may characterize the network rate that can be provided to the terminal device in the current environment after a plurality of cells are networked.
Illustratively, the combined network rate value for any cell combination satisfies the following equation:
wherein R is a combined network speed value of a cell combination; n is the number of cells in the cell group, P i Is the signal strength percentage of the i-th cell; r is R i Is the cell network rate value of the i-th cell.
P i The method comprises the steps of obtaining a percentage according to the signal intensity of a cell, and assigning the percentage of a cell network speed value to frequency band information of the cell according to the frequency band information of the cell. It will be appreciated that R i It can be understood that the i-th cell can reach the maximum cell network speed value; p (P) i ×R i It is understood that the cell network speed value of the i-th cell at the current channel quality, where Pi can be set up custom.
In a possible implementation manner, the embodiment of the application provides a setting P i In the form of (a).
The terminal device may, for example, set the first threshold value Thresh as a standard value, set the first threshold value to K% (K as a fixed value,and K is more than or equal to 0<100 A) is provided; setting a signal intensity variation delta S corresponding to every 1% increase; calculating the signal intensity percentage P of the cell according to the difference value between the signal intensity S of the cell and the first threshold value i . Wherein P is i ＝((S-Thresh)/ΔS+K)％。
Wherein K and ΔS can be set in a customized manner, and the embodiment of the application is not limited thereto.
In some embodiments, the terminal device obtains P i Possibly exceeding 1, indicating that: the current channel quality is higher, the terminal equipment determines that the influence of the current channel quality on the cell network speed value is lower, and at the moment, the terminal equipment transmits the P i Set to 100%.
The embodiment of the application exemplarily provides a setting P i The method does not limit the network selection method provided by the embodiment of the present application, in the embodiment of the present application, the correspondence between the channel quality and the cell network speed value may be set in other manners, for example, the terminal device may set the signal strength of the lowest cell in the N cells as a standard value, may set the signal strength of the highest cell in the N cells as a standard value, may set the average value of the signal strengths of the cells in the N cells as a standard value, and the embodiment of the present application does not limit the foregoing.
The terminal equipment obtains P i After that, P can be calculated i And R is R i And obtaining the cell network speed value of the cell under the current channel quality.
The terminal equipment traverses each cell in the cell combination to obtain a cell network speed value of a plurality of cells under the current channel quality; and the terminal equipment sums the network speed values of the cells under the current channel quality to obtain a combined network speed value of the cell combination.
The above formula will be described below by taking the example that the cell group includes the second cell and the third cell.
The number of cells in the cell group is 2, and the percentage of the signal strength of the second cell is P 2 The frequency band of the second cell can reach a cell network speed value S 2 The method comprises the steps of carrying out a first treatment on the surface of the Percentage of signal strength of third cellThe ratio is P 3 The frequency band of the second cell can reach a cell network speed value S 3 The combined network rate value achievable by the cell combination at the current channel quality is r=p 2 ×S 2 +P 3 ×S 3 。
S603, traversing the L cell combinations by the terminal equipment, and calculating to obtain a combined network speed value of the L cell combinations.
The terminal device performs steps S601-S602 to calculate any one of the L cell combinations by traversal, and obtains a set of combined network speed values of the L cell combinations.
S604, the terminal equipment screens the target cell combination meeting the preset condition in the combined network rate values of the L cell combinations.
The terminal equipment can sort the combined network speed values of the L cell combinations to obtain target cell combinations meeting preset conditions. The target cell combinations meeting the preset conditions comprise cell combinations corresponding to the maximum combined network speed value in the L cell combinations.
For example, the terminal device may arrange the combined network rate values of the L cell combinations in ascending/descending order, thereby obtaining a cell group having the largest combined network rate value, and set the cell group as the target cell group.
It may be appreciated that the embodiment of the present application may use the terminal device to perform steps S601-S604 to calculate the target cell group. In order to improve the operation efficiency, in the embodiment of the present application, the operation process of steps S601-604 may be performed by using a base station with larger calculation power, which is not limited in the embodiment of the present application.
According to the network selection method provided by the embodiment of the application, the cell combinations with the cell signal intensities lower than the first threshold value in the M cell combinations are screened out through the terminal equipment, so that L cell combinations are obtained; the terminal equipment calculates and obtains a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell; traversing the L cell combinations by the terminal equipment, and calculating to obtain a combined network speed value of the L cell combinations; and the terminal equipment screens the target cell combinations meeting preset conditions from the combined network rate values of the L cell combinations. In this way, the terminal equipment can calculate and obtain the target cell combination meeting the preset condition in the cell combination, so that the cells in the target cell combination provide high-network-rate service for the terminal equipment after networking, and the capability of the terminal equipment for running network services is improved.
The above embodiments are described with reference to fig. 4 to fig. 6, where the terminal device executes the network selection method provided by the embodiment of the present application. In practical application, the terminal equipment has limited calculation power, and on the basis, the embodiment of the application also provides a network selection method based on the base station execution. As shown in fig. 7:
s701, the base station indicates that the terminal device resides in the first cell.
After receiving the network state change event reported by the terminal equipment, the base station can instruct the terminal equipment to execute the network residence process of cell search and cell selection. The cell search process and the cell selection process may refer to the description of step S102, and the description of this embodiment of the present application is omitted. The base station may receive a first cell measurement report reported by the terminal device and instruct the terminal device to camp on the first cell.
Wherein the network state change event comprises at least one of: terminal equipment starting event, closing flying mode event and card inserting event
S702, a base station acquires information of N cells, wherein the information of any cell comprises: cell signal strength, cell frequency band, and cell network rate values.
The base station of the first cell may perform signaling interaction with other base stations to obtain information such as the physical cell ID, SIB, MIB, where the information may carry a cell frequency band. The base station of the first cell transmits the information to the terminal equipment, and the terminal equipment can measure the signal strengths of the N cells and report a measurement report comprising the signal strengths of the N cells to the base station of the first cell.
The base station of the first cell can query and obtain a cell network speed value in a preset corresponding relation table according to the cell frequency band and related information. The table lookup process may refer to the relevant expressions of table 1 and table 2, and will not be described herein.
S703, the base station sends a first signaling for querying the band combining capability information to the terminal device.
The first signaling is used to instruct the terminal device to query the frequency band combining capability information, and the first signaling may be a terminal device capability query (UE capability enqiry) message. The base station of the first cell sends a first signaling to the terminal equipment; after inquiring the self-configured capability, the terminal equipment reports the capability information of the terminal equipment to the base station of the first cell, wherein the capability information of the terminal equipment comprises the frequency band combination capability information.
S704, the base station obtains M cell combinations in N cells based on the frequency band combination capability information of the terminal equipment, wherein the frequency band combination capability information comprises a plurality of groups of frequency band combinations, and the cell frequency band in any cell combination is consistent with one frequency band combination in the plurality of groups of frequency band combinations; n and M are natural numbers.
The principle that the base station performs the frequency band combining capability information based on the terminal device to obtain the M cell combinations in the N cells is similar to the principle that the terminal device performs the frequency band combining capability information based on the M cell combinations in the N cells, and reference may be made to the related description in step S403, which is not repeated in the embodiment of the present application.
S705, the base station obtains a target cell combination with a combined network rate value meeting a preset condition in M cell combinations based on the information of each cell in the M cell combinations.
The base station of the first cell may obtain a combined network rate value for each cell in any combination of cells according to the cell network rate value and the signal strength of the cell. After traversing the combination of M cells, the base station of the first cell obtains M combination network speed values. The base station of the first cell performs ascending or descending sorting processing on the combined network speed values to obtain target cell combinations meeting preset conditions. The target cell combination of the preset condition may be a cell combination corresponding to a maximum combined network speed value in the M cell combinations.
The following describes in detail the method for obtaining the combined network rate value of any cell combination according to the cell network rate value and the signal strength of each cell in the cell combination in combination with steps S801 to S804.
The base station obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on information of each cell in the M cell combinations, and the method comprises the following steps:
S801, the base station screens out cell combinations with cell signal intensities lower than a first threshold value in M cell combinations to obtain L cell combinations.
The information of the cell also comprises a first threshold value, wherein the first threshold value is a signal strength threshold value and is used for indicating the terminal equipment to execute cell reselection when the signal strength meets a threshold condition. And the base station receives the cell signal intensity of each cell in the M cell combinations reported by the terminal equipment and screens the cell signal intensity. When the signal intensity of each cell in the cell combination is greater than or equal to a first threshold value, reserving the cell combination; and screening out any cell combination when the signal strength of the cell is lower than a first threshold value. The base station obtains L cell combinations of which the signal strengths of all cells transmitted by the terminal equipment meet the cell reselection threshold value.
S802, the base station calculates a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell.
The operation process of the base station for calculating the combined network rate value of the cell combination may refer to the related description in step S602, which is not repeated in the embodiment of the present application.
S803, traversing the L cell combinations by the base station, and calculating to obtain a combined network speed value of the L cell combinations.
The base station executes steps S801-S802 to traverse and calculate any cell combination in the L cell combinations to obtain a set of combined network speed values of the L cell combinations.
S804, the base station screens the target cell combinations meeting preset conditions from the combined network rate values of the L cell combinations.
The base station can sort the combined network speed values of the L cell combinations to obtain the target cell combinations meeting the preset conditions. The target cell combinations meeting the preset conditions comprise cell combinations corresponding to the maximum combined network speed value in the L cell combinations.
The base station of the first cell may perform steps S801-S804 to obtain a target cell group.
It will be appreciated that steps S801-S804 are similar in principle to steps S601-S604, and the embodiments of the present application will not be described in detail.
S706, when the target cell combination includes the second cell and the third cell, the base station instructs the terminal device to switch from the first cell to the second cell.
The target cell combination comprises a second cell and a third cell, wherein the first cell and the second cell are not the same cell. The base station of the first cell may instruct the terminal device to stop camping on the first cell and to switch from the first cell to the second cell. The terminal device may camp on a base station of the second cell.
It may be appreciated that the target cell combination may include one or more cells, and in the embodiment of the present application, taking the cell combination of the second cell and the third cell as the target cell combination, the number of cells in the target cell group is not limited in the embodiment of the present application.
And S707, when the bandwidth in the second cell does not meet the service requirement, the base station adds a third cell to the terminal equipment.
In some embodiments, the terminal device resides in the second cell, and when the bandwidth of the second cell does not meet the service requirement, the base station of the second cell may add a secondary cell to the terminal device, so as to provide a greater transmission network rate for the terminal device. The secondary cell may be a third cell.
The process of adding the third cell to the terminal device by the base station of the second cell may refer to the related descriptions of steps S501-S505, and will not be described herein.
In step S701 to S707, the base station may be understood as a base station corresponding to the cell in which the terminal device currently resides. For example: when the terminal device camps on the first cell, the base station may correspond to the base station of the first cell; when the terminal device camps on the second cell, the base station may correspond to the base station of the second cell. The base station is not specifically limited to the base station of the first cell, the base station of the second cell, or other base stations.
According to the network selection method provided by the embodiment of the application, the terminal equipment is indicated to reside in the first cell through the base station; the base station acquires information of N cells; the base station sends a first signaling for inquiring the frequency band combination capability information to the terminal equipment; the base station obtains M cell groups in N cells based on the frequency band combination capability information from the terminal equipment; the base station obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations; when the target cell group comprises a second cell and a third cell, the base station instructs the terminal device to switch from the first cell to the second cell; and when the bandwidth in the second cell does not meet the service requirement, the base station adds a third cell for the terminal equipment. In this way, the second cell and the third cell can form a target cell group with the highest combined network speed value, and the base station can provide a higher combined network speed for the terminal equipment after indicating the terminal equipment to access the second cell and the third cell, so as to improve the data transmission speed of the terminal equipment.
The network selecting method according to the embodiment of the present application has been described above, and the device for executing the network selecting method according to the embodiment of the present application is described below. It will be appreciated by those skilled in the art that the methods and apparatus may be combined and referred to, and that the related apparatus provided in the embodiments of the present application may perform the steps in the network selection method described above.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a network selecting device according to an embodiment of the present application, where the network selecting device may be a terminal device in the embodiment of the present application, or may be a chip or a chip system in the terminal device.
As shown in fig. 8, the network selecting apparatus 800 may be used in a communication device, a circuit, a hardware component, or a chip, and includes: a display unit 801, and a processing unit 802. Wherein the display unit 801 is used for supporting the step of displaying executed by the network selecting device 800; the processing unit 802 is configured to support the network selecting device 800 to perform steps of information processing.
In a possible implementation, the network selection device 800 may also include a communication unit 803. Specifically, the communication unit is configured to support the network selection device 800 to perform the steps of transmitting data and receiving data. The communication unit 803 may be an input or output interface, a pin or a circuit, etc.
In a possible embodiment, the network selecting device may further include: a storage unit 804. The processing unit 802 and the storage unit 804 are connected by a line. The storage unit 804 may include one or more memories, which may be one or more devices, circuits, or means for storing programs or data. The storage unit 804 may exist independently and be connected to the processing unit 802 provided in the network selection device through a communication line. The memory unit 804 may also be integrated with the processing unit 802.
The storage unit 804 may store computer-executable instructions of the method in the terminal device to cause the processing unit 802 to perform the method in the above-described embodiment. The storage unit 804 may be a register, a cache, a RAM, or the like, and the storage unit 804 may be integrated with the processing unit 802. The storage unit 804 may be a read-only memory (ROM) or other type of static storage device that may store static information and instructions, and the storage unit 804 may be independent of the processing unit 802.
The network selection method provided by the embodiment of the application can be applied to the electronic equipment with the communication function. The electronic device includes a terminal device, and specific device forms and the like of the terminal device may refer to the above related descriptions, which are not repeated herein.
The embodiment of the application provides a terminal device, which comprises: comprising the following steps: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to cause the terminal device to perform the method described above.
The embodiment of the application provides a chip. The chip comprises a processor for invoking a computer program in a memory to perform the technical solutions in the above embodiments. The principle and technical effects of the present application are similar to those of the above-described related embodiments, and will not be described in detail herein.
The embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores a computer program. The computer program realizes the above method when being executed by a processor. The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer readable media can include computer storage media and communication media and can include any medium that can transfer a computer program from one place to another. The storage media may be any target media that is accessible by a computer.
In one possible implementation, the computer readable medium may include RAM, ROM, compact disk-read only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium targeted for carrying or storing the desired program code in the form of instructions or data structures and accessible by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (Digital Subscriber Line, DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes optical disc, laser disc, optical disc, digital versatile disc (Digital Versatile Disc, DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
Embodiments of the present application provide a computer program product comprising a computer program which, when executed, causes a computer to perform the above-described method.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing detailed description of the application has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the application.

Claims (15)

1. A method of selecting a network, the method comprising:
the terminal equipment resides in a first cell;
the terminal device obtains information of N cells, and the information of any cell comprises: cell signal strength, cell frequency band and cell network speed value;
the terminal equipment obtains M cell combinations in the N cells based on the frequency band combination capability information of the terminal equipment, wherein the frequency band combination capability information comprises a plurality of groups of frequency band combinations, and the cell frequency band in any one of the cell combinations is consistent with one of the frequency band combinations; n and M are natural numbers;
the terminal equipment obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations;
when the target cell group includes a second cell and a third cell, the terminal device is handed over from the first cell to the second cell;
and adding the third cell to the terminal equipment when the bandwidth of the terminal equipment in the second cell does not meet the service requirement.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The cell network speed value of any cell is obtained by inquiring the terminal equipment in a preset corresponding relation table based on one or more of the following related information of any cell: cell frequency band, modulation order, number of carriers, multiple input multiple output MIMO parameters, link direction, subcarrier spacing, bandwidth of single carrier element CC or number of carrier elements CC.
3. The method according to claim 1 or 2, wherein the terminal device obtains a target cell combination of the M cell combinations, for which a combined network rate value satisfies a preset condition, based on information of each cell of the M cell combinations, comprising:
the terminal equipment screens out the cell combinations of which the cell signal intensity is lower than a first threshold value in the M cell combinations to obtain L cell combinations;
the terminal equipment calculates and obtains a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell;
the terminal equipment traverses the L cell combinations and calculates to obtain combined network speed values of the L cell combinations;
and the terminal equipment screens the target cell combination meeting the preset condition from the combined network rate values of the L cell combinations.
4. A method according to claim 3, characterized in that the combined network speed value of any cell combination satisfies the following condition:
wherein R is a combined network rate value for the cell combination; n is the number of cells in the cell group, P i Is the signal strength percentage of the i-th cell; r is R i Is the cell network rate value of the i-th cell.
5. The method according to any one of claims 1-4, wherein the target cell group satisfying the preset condition includes a cell group corresponding to a maximum combined network rate value among L cell groups.
6. The method of claim 1, wherein before the terminal device resides in the first cell, the method further comprises:
the terminal equipment detects a network state change event; the network state change event includes at least one of: a terminal device power-on event, a shut-down flight mode event or a card insertion event.
7. A method of selecting a network, the method comprising:
the base station indicates the terminal equipment to reside in a first cell;
the base station acquires information of N cells, and the information of any one cell comprises: cell signal strength, cell frequency band and cell network speed value;
The base station sends a first signaling for inquiring the frequency band combination capability information to the terminal equipment;
the base station obtains M cell combinations in the N cells based on the frequency band combination capability information from the terminal equipment, wherein the frequency band combination capability information comprises a plurality of groups of frequency band combinations, and the cell frequency band in any one of the cell combinations is consistent with one of the frequency band combinations; n and M are natural numbers;
the base station obtains a target cell combination with a combined network rate value meeting a preset condition in the M cell combinations based on the information of each cell in the M cell combinations;
when the target cell group includes a second cell and a third cell, the base station instructs the terminal device to switch from the first cell to the second cell;
and when the bandwidth in the second cell does not meet the service requirement, the base station adds the third cell to the terminal equipment.
8. The method according to claim 7, wherein the cell network rate value of any one cell is obtained by the base station by querying a preset correspondence table based on one or more of the following related information of any one cell:
Cell frequency band, modulation order, number of carriers, multiple input multiple output MIMO parameters, link direction, subcarrier spacing, bandwidth of single carrier element CC or number of carrier elements CC.
9. The method according to claim 7 or 8, wherein the base station obtains a target cell combination of the M cell combinations, for which a combined network rate value satisfies a preset condition, based on information of each cell of the M cell combinations, including:
the base station screens out the cell combinations of which the cell signal intensity is lower than a first threshold value in the M cell combinations to obtain L cell combinations;
the base station calculates a combined network speed value of the cell combination based on the cell signal intensity of each cell in any cell combination and the cell network speed value of each cell;
traversing the L cell combinations by the base station, and calculating to obtain combined network speed values of the L cell combinations;
and the base station screens the target cell combinations meeting preset conditions from the combined network rate values of the L cell combinations.
10. The method of claim 9, wherein the combined network rate value in any cell combination satisfies the following condition:
Wherein R is a combined network rate value for the cell combination; n is the number of cells in the cell group, P i Is the signal strength percentage of the i-th cell; r is R i Is the cell network rate value of the i-th cell.
11. The method according to any of claims 7-10, wherein the target cell group satisfying the preset condition comprises a cell combination corresponding to a maximum combined network rate value of the L cell combinations.
12. The method of claim 7, wherein before the base station indicates that the terminal device resides in the first cell, the method further comprises:
the base station receives a network state change event reported by the terminal equipment; the network state change event includes at least one of: a terminal device power-on event, a shut-down flight mode event or a card insertion event.
13. A terminal device, comprising: a processor and a memory;
the memory stores computer-executable instructions;
the processor executing computer-executable instructions stored in the memory to cause the terminal device to perform the method of any one of claims 1-12.
14. A computer readable storage medium storing a computer program, which when executed by a processor performs the method according to any one of claims 1-12.
15. A computer program product comprising a computer program which, when run, causes a computer to perform the method of any of claims 1-12.
CN202211466767.4A 2022-11-22 2022-11-22 Network selection method, device and storage medium Active CN116709443B (en)

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