CN109005574B - Cell selection method, mobile terminal and computer readable storage medium - Google Patents
Cell selection method, mobile terminal and computer readable storage medium Download PDFInfo
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- CN109005574B CN109005574B CN201810852737.4A CN201810852737A CN109005574B CN 109005574 B CN109005574 B CN 109005574B CN 201810852737 A CN201810852737 A CN 201810852737A CN 109005574 B CN109005574 B CN 109005574B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The invention discloses a cell selection method, which comprises the following steps: acquiring a cell list to be selected, wherein the cell list comprises at least two cells; acquiring a current signal intensity value of each cell in the cell list, and reading historical load representation information of each cell from a preset cell residence information base, wherein the historical load representation information is used for representing the historical load condition of the cell; correspondingly calculating the priority value of each cell according to the current signal intensity value and the historical load representation information; and comparing the priority values of the cells obtained by calculation, and selecting the cell with the largest priority value as a target service cell for residence. The invention also discloses a mobile terminal and a computer readable storage medium. The invention can realize reasonable selection of the cell and avoid the cell with stronger resident signal of the mobile terminal and poor actual service quality.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a cell selection method, a mobile terminal, and a computer-readable storage medium.
Background
A cell, i.e. an area covered by one or a part of a base station (sector antenna) in a cellular mobile communication system. Currently, when a mobile terminal selects a camping cell, if a plurality of cells meeting a preset cell selection criterion are detected, the mobile terminal preferentially selects a cell with the highest signal strength for camping, which may result in a situation that the service quality of the cell with a strong signal is poor. For example, the mobile terminal detects that there are currently two cells that meet the cell selection criteria: the mobile terminal preferentially selects the cell a with higher signal strength to camp on, however, when the number of the mobile terminals camped on the cell a is too large, the service quality of the cell a will be reduced, for example, the network speed is reduced, and at this time, although the mobile terminal camps on the cell with stronger signal, the actual service quality of the cell is poor, thereby affecting the user experience based on the mobile terminal.
Disclosure of Invention
The invention mainly aims to provide a cell selection method, a mobile terminal and a computer readable storage medium, aiming at realizing reasonable selection of cells and avoiding cells with stronger resident signals of the mobile terminal and poor actual service quality.
In order to achieve the above object, the present invention provides a cell selection method, including the following steps:
acquiring a cell list to be selected, wherein the cell list comprises at least two cells;
acquiring a current signal intensity value of each cell in the cell list, and reading historical load representation information of each cell from a preset cell residence information base, wherein the historical load representation information is used for representing the historical load condition of the cell;
correspondingly calculating the priority value of each cell according to the current signal intensity value and the historical load representation information;
and comparing the priority values of the cells obtained by calculation, and selecting the cell with the largest priority value as a target service cell for residence.
Optionally, before the step of obtaining the list of cells to be selected, the method further includes:
establishing a cell residence information base;
when detecting that a mobile terminal resides in a certain cell, recording the transmission rate of a mobile network of the mobile terminal in the process of residing in the cell, wherein the transmission rate of the mobile network is used for representing the historical load condition of the cell;
and storing the cell where the mobile terminal resides and the corresponding network transmission rate into the cell residence information base.
Optionally, the step of reading the historical load characterizing information of each cell from a preset cell residence information base includes:
acquiring the current system time of the mobile terminal, and determining a first preset time period in which the system time is located;
reading the mobile network transmission rate of each cell in the first preset time period from a preset cell residence information base;
the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information comprises the following steps:
for each cell, obtaining a first average value of the transmission rate of the mobile network in the first preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the first average value.
Optionally, the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the first average value includes:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the first average value and a preset first priority value calculation function, wherein the first priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the first average value.
Optionally, the step of reading the historical load characterizing information of each cell from a preset cell residence information base includes:
reading the mobile network transmission rate of each cell in a second preset time period from a preset cell residence information base;
the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information comprises the following steps:
for each cell, obtaining a second average value of the transmission rate of the mobile network in the second preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the second average value.
Optionally, before the step of comparing the calculated priority values of each cell and selecting the cell with the largest priority value as the target serving cell for camping, the method further includes:
when the historical load representation information of each cell is not read, obtaining the current load representation value of each cell from a network side;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the current load characterization value.
Optionally, the step of correspondingly calculating a priority value of each cell according to the current signal strength value and the current load characterizing value includes:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the current load characteristic value and a preset second priority value calculation function, wherein the second priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the current load characteristic value.
Optionally, the cell selection method further includes:
acquiring a load representation value of the target service cell from a network side every preset time;
and when the obtained load representation value of the target service cell is higher than a preset threshold value, starting network reselection registration to reselect the target service cell for residing.
In addition, to achieve the above object, the present invention also provides a mobile terminal, including: a memory, a processor and a cell selection program stored on the memory and executable on the processor, the cell selection program when executed by the processor implementing the steps of the cell selection method as described above.
Furthermore, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon a cell selection program which, when executed by a processor, implements the steps of the cell selection method as described above.
When the mobile terminal selects the cell, the present signal value and the historical load representation information of each cell are obtained, the priority value of each cell is correspondingly calculated according to the present signal value and the historical load representation information, and finally the cell with the largest priority value is selected as the target service cell to reside. Compared with the prior art that the cell is selected only through the current signal value of the cell, the cell is selected by combining the current signal value of the cell and the historical load representation information, so that the reasonable selection of the cell is realized, and the cell with stronger resident signal of the mobile terminal and poor actual service quality is avoided.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention;
fig. 2 is a diagram of a communication network system architecture according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a cell selection method according to a first embodiment of the present invention;
fig. 4 is a flowchart illustrating a cell selection method according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating a cell selection method according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
Based on the above mobile terminal hardware structure, various embodiments of the mobile terminal of the present invention are provided.
Referring to fig. 1, in an embodiment of the mobile terminal of the present invention, the mobile terminal includes: a memory 109, a processor 110, and a cell selection program stored on the memory 109 and operable on the processor 110, the cell selection program when executed by the processor 110 performing the steps of:
acquiring a cell list to be selected, wherein the cell list comprises at least two cells;
acquiring a current signal intensity value of each cell in the cell list, and reading historical load representation information of each cell from a preset cell residence information base, wherein the historical load representation information is used for representing the historical load condition of the cell;
correspondingly calculating the priority value of each cell according to the current signal intensity value and the historical load representation information;
and comparing the priority values of the cells obtained by calculation, and selecting the cell with the largest priority value as a target service cell for residence.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
establishing a cell residence information base;
when detecting that a mobile terminal resides in a certain cell, recording the transmission rate of a mobile network of the mobile terminal in the process of residing in the cell, wherein the transmission rate of the mobile network is used for representing the historical load condition of the cell;
and storing the cell where the mobile terminal resides and the corresponding network transmission rate into the cell residence information base.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
acquiring the current system time of the mobile terminal, and determining a first preset time period in which the system time is located;
reading the mobile network transmission rate of each cell in the first preset time period from a preset cell residence information base;
for each cell, obtaining a first average value of the transmission rate of the mobile network in the first preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the first average value.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the first average value and a preset first priority value calculation function, wherein the first priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the first average value.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
reading the mobile network transmission rate of each cell in a second preset time period from a preset cell residence information base;
for each cell, obtaining a second average value of the transmission rate of the mobile network in the second preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the second average value.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
when the historical load representation information of each cell is not read, obtaining the current load representation value of each cell from a network side;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the current load characterization value.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the current load characteristic value and a preset second priority value calculation function, wherein the second priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the current load characteristic value.
Further, the cell selection procedure when executed by the processor 110 further implements the steps of:
acquiring a load representation value of the target service cell from a network side every preset time;
and when the obtained load representation value of the target service cell is higher than a preset threshold value, starting network reselection registration to reselect the target service cell for residing.
The embodiment of the mobile terminal of the present invention is substantially the same as the embodiments of the cell selection method described below, and will not be described herein again.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above hardware structure of the mobile terminal and the communication network system, embodiments of the cell selection method of the present invention are provided.
The invention provides a cell selection method.
Referring to fig. 3, fig. 3 is a flowchart illustrating a cell selection method according to a first embodiment of the present invention, where the method includes:
step S10, obtaining a cell list to be selected, wherein the cell list comprises at least two cells;
the cell selection method of the embodiment can be applied to the process that mobile terminal equipment such as a mobile phone, a tablet computer and the like accesses the cell base station service.
When the mobile terminal performs network selection or reselection, first, a cell meeting a preset cell selection criterion is searched, where the cell selection criterion may be a cell selection criterion in the prior art, such as an S criterion in an LTE (Long Term Evolution) network, and of course, other cell selection criteria may also be used, and may be flexibly set in specific implementation. The specific process of the mobile terminal searching for the cell meeting the preset cell selection criterion can refer to the prior art, and is not described herein.
The mobile terminal obtains a list of cells to be selected according to the search result, if there is only one cell in the list of cells, the mobile terminal may directly camp on the cell as the target serving cell, and if the list of cells includes at least two cells, the following step S20 is executed.
Step S20, obtaining the current signal intensity value of each cell in the cell list, and reading the historical load representation information of each cell from a preset cell residence information base, wherein the historical load representation information is used for representing the historical load condition of the cell;
if the cell list includes at least two cells, the mobile terminal needs to select a target serving cell from the at least two cells to camp on, and the specific selection method is as follows:
firstly, obtaining a current signal intensity value of each cell in a cell list, wherein the detection of the current signal intensity value can refer to a detection mode of a mobile terminal on the cell signal intensity value in the prior art, and details are not repeated herein; meanwhile, the mobile terminal reads historical load representation information of each cell from a preset resident information base, the historical load representation information is used for representing the historical load condition of the cell, and the historical load representation information is obtained by collecting the load information of the cell within a past period of time.
For example, when the cell list includes two cells: when the cell a and the cell B are in use, the unique identification information of the cell a and the cell B can be obtained, and then the historical load representation information of the cell a and the historical load representation information of the cell B are respectively read from a preset resident information base according to the unique identification information.
Specifically, the historical load characterizing information may be a mobile network transmission rate (including an upload rate and a download rate) of the mobile terminal, and since, in general, a higher mobile network transmission rate indicates that a cell accessed by the mobile terminal is lighter in load, and a lower mobile network transmission rate indicates that a cell accessed by the mobile terminal is heavier in load, the mobile network transmission rate of the mobile terminal may be used as the historical load characterizing information of the cell. Of course, besides the transmission rate of the mobile network, other parameters may also be used as the historical load characterizing information of the cell, for example, the mobile terminal may obtain the current load parameter of the cell from the network side, and then use the obtained load parameter as the historical load characterizing information corresponding to the cell, which may be flexibly set during specific implementation.
It should be noted that, for a certain cell, when reading the historical load characterizing information of the mobile terminal, the mobile terminal may read all the historical load characterizing information of the cell stored in the resident information base, may only read the historical load characterizing information of the cell collected by the mobile terminal in a past period of time, may only read the historical load characterizing information of the cell collected by the mobile terminal in a past time point, and may be flexibly set in specific implementation.
Step S30, correspondingly calculating the priority value of each cell according to the current signal intensity value and the historical load representation information;
after the current signal strength value of each cell in the cell list is obtained and the historical load representation information of each cell is read, the mobile terminal correspondingly calculates the priority value of each cell according to the current signal strength value and the historical load representation information.
Taking the historical load characterization information as the transmission rate of the mobile network as an example, the manner of calculating the priority value may be: and substituting the current signal intensity value and the mobile network transmission rate into a preset priority value calculation function for calculation so as to obtain a corresponding priority value. It should be noted that, in order to ensure that the mobile terminal can obtain a better service, the resident cell should have a stronger signal strength, and the mobile network transmission rate should be higher.
Step S40, comparing the calculated priority values of the cells, and selecting the cell with the largest priority value as the target serving cell for camping.
After the priority value of each cell is obtained through calculation, the mobile terminal compares the calculated priority value of each cell, and selects the cell with the largest priority value as the target serving cell for residence, wherein the specific process of accessing the mobile terminal to the target serving cell may refer to the prior art, and is not described herein again.
In this embodiment, when the mobile terminal performs cell selection, the current signal value and the historical load representation information of each cell are obtained, and then the priority value of each cell is correspondingly calculated according to the current signal value and the historical load representation information, and finally the cell with the largest priority value is selected as the target serving cell for residence. Compared with the prior art that the cell is selected only through the current signal value of the cell, the cell is selected by combining the current signal value of the cell and the historical load representation information, so that the reasonable selection of the cell is realized, and the cell with stronger resident signal of the mobile terminal and poor actual service quality is avoided.
Further, referring to fig. 4, fig. 4 is a flowchart illustrating a cell selection method according to a second embodiment of the present invention. Based on the above-mentioned embodiment shown in fig. 3, before step S10, the method may further include:
step S50, establishing a cell resident information base;
step S60, when detecting that the mobile terminal resides in a certain cell, recording the mobile network transmission rate of the mobile terminal in the process of residing in the cell, wherein the mobile network transmission rate is used for representing the historical load condition of the cell;
step S70, storing the cell where the mobile terminal resides and the corresponding network transmission rate into the cell residence information base.
In this embodiment, the mobile terminal may record and save historical camping information for a past period of time as a reference for the current cell load. For example, for a cell, if a certain time period (such as early busy and late busy time periods) of three past days is recorded to have a high load, it can be inferred that the load of the a cell in the same time period is also high today.
When obtaining historical residence information of a past period of time, the mobile terminal may pre-establish a cell residence information base, where the cell residence information base is used to record and store the past cell residence condition of the mobile terminal and the transmission rate of the mobile network in the process of residence of the mobile terminal in a cell, and the detection mode of the transmission rate of the mobile network may refer to the prior art; when detecting that the mobile terminal resides in a certain cell, recording the transmission rate of a mobile network of the mobile terminal in the process of residing in the cell, wherein the transmission rate of the mobile network is used for representing the historical load condition of the cell; and then storing the cell where the mobile terminal resides and the corresponding network transmission rate into a cell residence information base. Thereby, the recording of the historical residence information of the mobile terminal for a period of time in the past is realized.
In the embodiment, the historical residence information of the mobile terminal is used as a reference for selecting the current cell, and as the load of a certain cell generally has certain regularity, for example, the load is higher in early busy and late busy periods every day, and the load of the cell in a public place (such as an airport, a station and the like) is generally higher than that of other cells, the historical residence information can reflect the current load condition of the cell to a certain extent, so that it is reasonable to select the cell to be currently resided according to the historical residence information.
When the historical load representation information of each cell is subsequently read from the preset cell residence information base, as an embodiment, the step may include: acquiring the current system time of the mobile terminal, and determining a first preset time period in which the system time is located; reading the mobile network transmission rate of each cell in the first preset time period from a preset cell residence information base; at this time, the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information includes: for each cell, obtaining a first average value of the transmission rate of the mobile network in the first preset time period; and correspondingly calculating the priority value of each cell according to the current signal intensity value and the first average value.
For example, when the current system time is in the preset time period 8: 00-10: 00, the mobile terminal reads 8: 00-10: 00 mobile network transmission rate per cell, then for each cell, it is calculated 8: 00-10: and averaging the transmission rate of the mobile network in the period of 00, and then correspondingly calculating the priority value of each cell according to the current signal intensity value of each cell and the average transmission rate of the mobile network.
Further, the manner of correspondingly calculating the priority value of each cell according to the current signal strength value and the first average value may be as follows: and correspondingly calculating the priority value of each cell according to the current signal strength value, the first average value and a preset first priority value calculation function, wherein the first priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the first average value.
For example, the first priority value calculation function may be set to: priority value-current signal strength value-average mobile network transmission rate x preset coefficient. Of course, it will be understood by those skilled in the art that the defined priority value calculation function may be sufficient if it satisfies the condition that the first priority value calculation function is an increasing function of the current signal strength value and a decreasing function of the first average value.
The average value of the transmission rate of the mobile network in the first preset time period is used as the representation of the historical load condition of the cell, so that the influence of fluctuation of the transmission rate of the mobile network in a short time is avoided, and the accuracy of calculating the priority value is improved.
Further, as another embodiment, the step of reading the historical load characterizing information of each cell from a preset cell residence information base may further include: reading the mobile network transmission rate of each cell in a second preset time period from a preset cell residence information base; at this time, the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information includes: for each cell, obtaining a second average value of the transmission rate of the mobile network in the second preset time period; and correspondingly calculating the priority value of each cell according to the current signal intensity value and the second average value.
For example, the mobile terminal may read the mobile network transmission rate of each cell in the past week from the cell residence information base, then calculate the average value of the mobile network transmission rates of each cell in the past week, and then correspondingly calculate the priority value of each cell according to the current signal strength value of each cell and the average value of the mobile network transmission rates. The calculation function of the second priority value is similar to the calculation function of the first priority value, and can be flexibly set in specific implementation.
Similarly, the average value of the transmission rate of the mobile network in the second preset time period is used as the representation of the historical load condition of the cell, so that the influence of fluctuation of the transmission rate of the mobile network in a short time is avoided, and the accuracy of calculating the priority value is improved.
Further, based on the above embodiment, before step S40, the method may further include the steps of: when the historical load representation information of each cell is not read, obtaining the current load representation value of each cell from a network side; and correspondingly calculating the priority value of each cell according to the current signal intensity value and the current load characterization value.
Considering the change of the geographical location of the user, for the cell list to be selected acquired by the mobile terminal, historical load characterization information corresponding to each cell in the list may not be found in the cell residence information base, at this time, the mobile terminal may acquire the current load characterization value of each cell from the received cell broadcast, and then correspondingly calculate the priority value of each cell according to the current signal strength value and the current load characterization value.
Further, the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the current load characterizing value may include: and correspondingly calculating the priority value of each cell according to the current signal strength value, the current load characteristic value and a preset second priority value calculation function, wherein the second priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the current load characteristic value.
In this embodiment, when the mobile terminal cannot obtain the historical load characterization information of each cell from the historical information stored in the mobile terminal, the current load characterization value of the network side may be directly read, and the priority value of each cell is correspondingly calculated according to the current signal strength value and the current load characterization value.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a cell selection method according to a third embodiment of the present invention. Based on the above embodiment, after step S40, the method may further include:
step S80, acquiring the load representation value of the target service cell from the network side every preset time length;
step S90, when the obtained load characteristic value of the target serving cell is higher than a preset threshold, enabling network reselection registration to reselect the target serving cell for camping.
In this embodiment, after the mobile terminal selects the target serving cell to camp on, the load characteristic value of the target serving cell may be obtained from the network side every preset time period, and it is determined whether the obtained load characteristic value is higher than a preset threshold value; when the obtained load representation value of the target service cell is higher than a preset threshold value, the target service cell is in a busy state at present, and at the moment, the mobile terminal starts network reselection registration to reselect the target service cell for residing. By the method, the flexibility of cell selection is enhanced, and the use experience of a user based on the mobile terminal is improved.
The invention also provides a computer readable storage medium.
The computer readable storage medium of the present invention has stored thereon a cell selection program which, when executed by a processor, implements the steps of the cell selection method as described above.
The method implemented when the cell selection program running on the processor is executed may refer to the embodiment of the cell selection method of the present invention, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method for cell selection, the method comprising:
acquiring a cell list to be selected, wherein the cell list comprises at least two cells;
acquiring a current signal intensity value of each cell in the cell list, and reading historical load representation information of each cell from a preset cell residence information base, wherein the historical load representation information is used for representing the historical load condition of the cell, and the historical load representation information is obtained by acquiring the load information of each cell in the cell list to be selected within a past period of time or the historical load representation information of each cell in the cell list to be selected at a past time point;
correspondingly calculating the priority value of each cell according to the current signal intensity value and the historical load representation information;
comparing the priority values of the cells obtained by calculation, and selecting the cell with the largest priority value as a target service cell for residence;
before the step of comparing the calculated priority values of each cell and selecting the cell with the largest priority value as the target serving cell for camping, the method further includes:
when the historical load representation information of each cell is not read, obtaining the current load representation value of each cell from a network side;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the current load characterization value.
2. The cell selection method of claim 1, wherein the step of obtaining the list of cells to be selected is preceded by:
establishing a cell residence information base;
when detecting that a mobile terminal resides in a certain cell, recording the transmission rate of a mobile network of the mobile terminal in the process of residing in the cell, wherein the transmission rate of the mobile network is used for representing the historical load condition of the cell;
and storing the cell where the mobile terminal resides and the corresponding network transmission rate into the cell residence information base.
3. The cell selection method of claim 2, wherein the step of reading the historical load characterizing information of each cell from a preset cell residence information base comprises:
acquiring the current system time of the mobile terminal, and determining a first preset time period in which the system time is located;
reading the mobile network transmission rate of each cell in the first preset time period from a preset cell residence information base;
the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information comprises the following steps:
for each cell, obtaining a first average value of the transmission rate of the mobile network in the first preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the first average value.
4. The cell selection method of claim 3, wherein the step of correspondingly calculating a priority value for each cell according to the current signal strength value and the first average value comprises:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the first average value and a preset first priority value calculation function, wherein the first priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the first average value.
5. The cell selection method of claim 2, wherein the step of reading the historical load characterizing information of each cell from a preset cell residence information base comprises:
reading the mobile network transmission rate of each cell in a second preset time period from a preset cell residence information base;
the step of correspondingly calculating the priority value of each cell according to the current signal strength value and the historical load representation information comprises the following steps:
for each cell, obtaining a second average value of the transmission rate of the mobile network in the second preset time period;
and correspondingly calculating the priority value of each cell according to the current signal intensity value and the second average value.
6. The method of claim 1, wherein said step of correspondingly calculating a priority value for each cell based on said current signal strength value and said current load characterizing value comprises:
and correspondingly calculating the priority value of each cell according to the current signal strength value, the current load characteristic value and a preset second priority value calculation function, wherein the second priority value calculation function is an increasing function of the current signal strength value and is a decreasing function of the current load characteristic value.
7. The cell selection method of any one of claims 1 to 6, wherein the cell selection method further comprises:
acquiring a load representation value of the target service cell from a network side every preset time;
and when the obtained load representation value of the target service cell is higher than a preset threshold value, starting network reselection registration to reselect the target service cell for residing.
8. A mobile terminal, characterized in that the mobile terminal comprises: a memory, a processor and a cell selection program stored on the memory and executable on the processor, the cell selection program when executed by the processor implementing the steps of the cell selection method according to any of claims 1 to 7.
9. A computer readable storage medium, having stored thereon a cell selection program which, when executed by a processor, performs the steps of the cell selection method according to any one of claims 1 to 7.
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| CN109600808B (en) * | 2019-01-10 | 2021-06-18 | 维沃移动通信有限公司 | Cell selection method, terminal and network side equipment |
| WO2021026694A1 (en) * | 2019-08-09 | 2021-02-18 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device and network device |
| CN111885674A (en) * | 2020-06-30 | 2020-11-03 | 广东小天才科技有限公司 | Cell selection method, lightweight terminal and network equipment |
| CN112469099B (en) * | 2020-11-25 | 2023-06-23 | 维沃移动通信有限公司 | Networking control method, networking control device, electronic equipment and storage medium |
| CN113329477A (en) * | 2021-05-18 | 2021-08-31 | Oppo广东移动通信有限公司 | Cell residence method and device, modem, terminal equipment and storage medium |
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