KR20230168747A - Method and device for optimizing aceess attempt of user terminal - Google Patents

Abstract

The present invention relates to a method and device for optimizing a user terminal's connection attempt. A method for optimizing a user terminal's connection attempt in a shadow area within mobile communication coverage formed by a plurality of base stations, wherein a first base station among the plurality of base stations Attempting to connect to; and attempting to reconnect during the reconnection attempt time in response to a connection failure to the first base station, wherein the reconnection attempt time is a value obtained by increasing the previous connection attempt time by a certain ratio starting from the first connection attempt time. It is calculated.

Description

Method and device for optimizing access attempts of user terminal {METHOD AND DEVICE FOR OPTIMIZING ACEESS ATTEMPT OF USER TERMINAL}

The present invention relates to a method and device for optimizing a connection attempt when a user terminal passing through a shadow area within mobile communication coverage formed by a plurality of base stations connects to a base station.

A base station (BS) is a communication facility that connects a network and user terminals to provide wireless communication services. Base stations that connect mobile phones to mobile communication access networks such as CDMA, GSM, WCDMA, 3G, LTE, and 5G are widely used. In addition, base stations are also used in wireless communications such as Wi-Fi, WiMAX, and WAN.

One base station provides coverage for transmitting and receiving data to and from as few as one to as many as multiple user terminals, and a system is generally built to use mobile communications over a wider range by installing a plurality of such base stations at regular intervals. Accordingly, it is possible to provide communication services that do not deteriorate in quality even when the user terminal stays or moves in a specific area. Currently, base stations providing 5G coverage are installed nationwide, making it possible to provide higher quality services. .

Meanwhile, the installation location is designed to avoid shadow areas during the installation of multiple base stations, but some shadow areas may occur within mobile communication coverage due to various environmental factors. For example, a new building that acts as an obstacle may be built between some base stations, or a shadow area may occur due to an error in base station equipment. If the location where the user terminal stays is in a shaded area or passes through a shaded area while moving, the user terminal continuously attempts to connect to the base station, resulting in increased battery consumption.

Korean Patent Publication No. 10-2013-0036598

The present invention is intended to solve the above-mentioned problems, and provides a method and device for optimizing the connection attempt to reduce battery consumption when a user terminal passing through a shadow area within the mobile communication coverage formed by a plurality of base stations connects to the base station. There is a purpose.

According to one aspect of the present invention, a method for optimizing connection attempts of a user terminal is provided. A method for optimizing a user terminal's connection attempt is a method of optimizing a user terminal's connection attempt in a shadow area within mobile communication coverage formed by a plurality of base stations, comprising: attempting to connect to a first base station among the plurality of base stations; Attempting to reconnect during the reconnection attempt time in response to a connection failure to the first base station, wherein the reconnection attempt time is calculated by increasing the previous connection attempt time by a certain ratio starting from the first connection attempt time.

In one aspect, control is performed to perform a preset number of connection attempts during at least one of the initial connection attempt time and the reconnection attempt time.

In another aspect, the reconnection attempt time corresponding to a connection failure is a time increased by a factor of between 0.5 and 2.5 times the previous connection attempt time.

In another aspect, the step of attempting reconnection includes attempting reconnection by maintaining the reconnection attempt time at the first threshold in response to the reconnection attempt time increasing and reaching a first threshold. .

In another aspect, the step of attempting reconnection further includes determining whether to continue attempting to reconnect to the first base station in response to the reconnection attempt time increasing and reaching a second threshold.

In another aspect, the plurality of base stations include base stations associated with at least one of 3G communication, LTE communication, and 5G communication. Basically, the connection attempt of the user terminal is performed for 5G communication, and confirmation of whether to continue the reconnection attempt is made. The step includes confirming whether the 5G communication is used.

In another aspect, switching to a reconnection attempt for at least one of the 3G communication and the LTE communication in response to a user input indicating not to use the 5G communication.

In another aspect, the second threshold is greater than the first threshold.

In another aspect, in response to a change in the connection target base station from the first base station to the second base station during a reconnection attempt, reconnection is achieved by reducing the reconnection attempt time by a certain ratio from the reconnection attempt time to the first base station. It further includes a trial step.

In another aspect, the reconnection attempt time reduced by changing to the second base station is a time reduced by a factor of between 0.3 and 0.7 times the previous connection attempt time.

In another aspect, the step of attempting reconnection while reducing the predetermined multiplier includes, in response to the reconnection attempt time being reduced by changing to the second base station reaching a third threshold, the reconnection attempt time being reduced by the third base station. It includes the step of maintaining the threshold value and attempting reconnection.

In another aspect, a reference value is set for the remaining battery amount of the user terminal, and if the remaining battery amount is less than the reference value, the connection attempt time is not increased when a reconnection is attempted.

In another aspect, the first connection attempt time is the time taken when the first connection is successfully made to any one of the plurality of base stations.

According to another aspect of the present invention, a user terminal device that optimizes connection attempts is provided. A user terminal device that optimizes a connection attempt is a device that optimizes a user terminal's connection attempt in a shadow area within mobile communication coverage formed by a plurality of base stations, comprising: a communication module that attempts to connect to a first base station among the plurality of base stations; and a processor that controls connection of the communication module, wherein the processor controls the communication module to attempt reconnection during a reconnection attempt time in response to a connection failure to the first base station, and the reconnection attempt time is the first time. It is calculated as a value that increases the previous connection attempt time by a certain ratio, starting from the connection attempt time.

Embodiments of the present invention can have effects including the following advantages. However, since this does not mean that the embodiments of the present invention must include all of them, the scope of the rights of the present invention should not be understood as limited thereby.

The connection attempt optimization method and device according to an embodiment of the present invention is effective in preventing excessive increase in battery consumption of a user terminal in a shaded area.

Additionally, there is an effect of optimizing connection attempts depending on the movement state of the user terminal.

Figure 1 is a diagram schematically showing the operation of a connection attempt optimization system according to an embodiment of the present invention.
Figure 2 is a flowchart of a connection attempt optimization method according to an embodiment of the present invention.
Figure 3 is a flowchart of a connection attempt optimization method according to another embodiment of the present invention.
Figure 4 is a block diagram of a connection attempt optimization device according to an embodiment of the present invention.
Figure 5 is a diagram showing the process of attempting a connection while increasing the connection attempt time.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms such as first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component, and similarly, the second component may be referred to as a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be 'connected' or 'connected' to another component, it is understood that it may be directly connected or connected to the other component, but that other components may exist in between. It should be. On the other hand, when a component is mentioned as being 'directly connected' or 'directly connected' to another component, it should be understood that there are no other components in between.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as 'include' or 'have' are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

Before providing a detailed description of the drawings, it would be clarified that the division of components in this specification is merely a division according to the main function each component is responsible for. That is, two or more components, which will be described below, may be combined into one component, or one component may be divided into two or more components for more detailed functions.

In addition to the main functions it is responsible for, each of the components described below may additionally perform some or all of the functions handled by other components, and some of the main functions handled by each component may be performed by other components. It may also be carried out in full charge by . Therefore, the presence or absence of each component described throughout this specification should be interpreted functionally.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. In order to facilitate overall understanding when describing the present invention, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

Figure 1 is a diagram schematically showing the operation of a system for optimizing access attempts for a user terminal according to an embodiment of the present invention. Referring to FIG. 1, a system for optimizing access attempts of a user terminal includes a user terminal 110 and a plurality of base stations 120a to 120e. The user terminal access attempt optimization system may have the user terminal 110 as the executing entity and may be implemented as a business model (BM) centered on the user terminal 110.

The user terminal 110 includes a PC, tablet PC, laptop, mobile terminal, portable terminal, smartphone, PDA (Personal Digital Assistant), User Equipment (UE), terminal, wireless communication device, and mobile node carried by the user. , may include a mobile base station. The user terminal 110 may include a wireless device for using mobile communication services such as 3G, LTE, and 5G. The user terminal 110 may attempt to connect to a 3G, LTE, or 5G base station using a wireless device to use a mobile communication service. A user can move around an area where mobile communication coverage is established or stay in a specific area while carrying his or her terminal 110. At this time, the user terminal 110 may connect to the base station that is most accessible or closest among a plurality of base stations in order to use the mobile communication service. The user can use the mobile communication service of his choice using the terminal 110 connected to the base station.

The plurality of base stations 120a to 120e include an access point (AP), a base station (BS), and an advanced base station (ABS) to which a user terminal connects. A plurality of base stations 120a to 120e may be equipped with communication facilities or repeaters that connect the user terminal 110 to a network to provide mobile communication services. For example, it can be equipped with communication equipment that connects mobile communication access networks such as CDMA, GSM, WCDMA, 3G, LTE, and 5G. Each of the plurality of base stations 120a to 120e is equipped with at least one communication facility and can form mobile communication coverage to provide mobile communication services to user terminals around the base station installation location.

A plurality of base stations 120a to 120e may be installed at a location separated from each other by a communicable range, and some base stations may be installed so that a portion of the communicable range overlaps. For example, base station a (120a) and base station b (120b) in FIG. 1 may be installed so that their communication ranges partially overlap. Each base station can provide mobile communication coverage at a fixed point, and each base station may provide coverage of the same range or may provide different coverage. Of course, it can include not only fixed base stations but also mobile base stations used to cover shadow areas, such as drones.

Meanwhile, as shown in FIG. 1, some shaded areas may be formed in the mobile communication coverage formed by a plurality of base stations 120a to 120e. Shadow areas may not exist when the first base stations are installed, but may be formed when buildings or structures that interfere with the base station's communications are added later. A user can move or stay within an area where mobile communication coverage is formed while carrying his/her terminal 110. The stationary location may be a shadow area within the coverage, or the moving location may be a shadow area within the coverage. In this case, the user terminal 110 continuously attempts to connect to the base station, resulting in excessive battery consumption. Therefore, in order to solve this problem, a method for optimizing the connection attempt when the user terminal 110 attempts to connect to the base station within the shaded area will be described. For convenience of explanation, the process of optimizing the connection attempt while the user terminal is stationary and the process of optimizing the connection attempt while the user terminal is moving are separately described.

First, the process of optimizing connection attempts in a stopped state will be described. With the location of the user terminal 110 fixed, the user terminal 110 may attempt to connect to one of the plurality of base stations 120a to 120e. The base station attempting to connect may be the base station closest to the location of the user terminal, or may be a base station with a previous connection history. Hereinafter, the base station attempting to connect is referred to as the first base station 120a. The user terminal 110 may attempt to connect to the first base station 120a during a set connection attempt time and may store information about the reference time for attempting to connect to the base station. In one embodiment, when attempting to connect to the first base station 120a among the plurality of base stations 120a to 120e, the connection may be attempted during the first connection attempt time. Here, the first connection attempt time may be a time arbitrarily set by the user terminal, or may be a record of the time taken when first successfully connecting to any one of the plurality of base stations 120a to 120e. In other words, if a previous connection was successful, information about the time spent in the connection process may be recorded and set as the first connection attempt time for subsequent connections. The user terminal 110 may set the first connection attempt time as a reference time for connecting to the base station.

Meanwhile, in the process of attempting to connect to the first base station 120a, the location of the user terminal 110 corresponds to a shaded area, so the connection may fail. The user terminal 110 may attempt to connect to the first base station at the first connection attempt time and, if the connection fails, reconnect to the first base station. At this time, the time to attempt reconnection can be set by increasing the previous connection time by a certain ratio. For example, if a connection was attempted during the first connection attempt time when attempting a previous connection, the first connection attempt time may be increased by a factor of 0.5 to 2.5 times when attempting a reconnection. The multiplier for increasing the connection attempt time may be determined according to the settings of the user terminal 110. The user terminal 110 may attempt to reconnect by increasing the connection attempt time by a certain factor each time it attempts to reconnect. At this time, the connection attempt time may be increased by the same amount according to the once determined multiplier, or the connection attempt time may be increased by a different multiplier each time. For example, if the first connection attempt time is 1 minute and the multiplier for the connection attempt time is set to 2, the connection attempt can be attempted for 2 minutes on the second connection attempt and for 3 minutes on the third connection attempt. Alternatively, the multiplier for the connection attempt time each time can be increased consistently, so that when making the second connection attempt, the connection is attempted for 2 minutes and 10 seconds, and when making the third connection attempt, the connection is attempted for 3 minutes and 30 seconds. The user terminal 110 may determine the multiplier when attempting a reconnection according to a pre-stored setting value.

In this way, if the connection attempt time is increased by a certain ratio, the connection attempt time continues to increase each time a reconnection is attempted, resulting in a problem of increased battery consumption. Therefore, the number of connection attempts during the connection attempt time is kept constant, but the connection attempt time is gradually increased to prevent excessive connection attempts from occurring each time a reconnection is attempted. The number of connection attempts within the connection attempt time may be determined according to a setting value set in the user terminal 110.

Meanwhile, if the connection attempt time continues to increase, the waiting time among the connection attempt times becomes excessively longer than the connection attempt time, so an upper limit for the connection attempt time can be set. Here, the upper limit can be used as a threshold for increasing the connection attempt time by a certain ratio. In one embodiment, the user terminal 110 sets a first threshold for reconnection attempts, and when the reconnection attempt time exceeds the first threshold, sets the reconnection attempt time to the first base station to the first threshold. It can be maintained. That is, reconnection can be attempted with a time corresponding to the first threshold without further increasing the connection attempt time. Naturally, if the connection attempt time upon reconnection is less than the first threshold, reconnection can be attempted by increasing the previous connection attempt time by a certain factor. As a result, the user terminal 110 repeatedly attempts a set number of connection attempts for an increased connection time each time, thereby preventing excessive battery consumption.

Meanwhile, the user terminal 110 can also set a second threshold that is different from the first threshold. Here, the second threshold refers to a value set larger than the first threshold as a standard for determining whether the user terminal 110 will continue to attempt to connect to the first base station. For example, if the reconnection attempt time exceeds the second threshold, the user may be asked whether to continue the reconnection attempt to the first base station. The user terminal 110 is basically in a state of attempting to reconnect to use 5G communication. If it determines that 5G communication is not available due to its current location, it confirms the user's intention to continue attempting to reconnect to the 5G base station and requests 5G communication from the user. Upon receiving an input indicating that the connection is being abandoned, the base station can be searched to attempt to connect to a base station that supports 3G communication or LTE communication. Preferably, a connection attempt to the 5G communication base station may be performed, and then a connection attempt to the LTE communication base station may be performed. In addition, if the LTE communication connection attempt is abandoned, it is better to sequentially control the connection to the 3G communication base station.

The user terminal 110 may confirm the user's intention to attempt to reconnect to the first base station by outputting a notification to confirm the reconnection attempt on the display or through a speaker. Here, it has been explained that the first threshold is set as the upper limit for the connection attempt time and the second threshold is set as the standard for checking the connection attempt, but the first threshold is set as the standard for checking the connection attempt and the second threshold is set as the standard for checking the connection attempt. The threshold may be set as an upper limit on the connection attempt time. That is, they can be set regardless of the order of first, second, etc., and the size of each threshold can also be changed.

As described above, the user terminal 110 can set the first threshold and the second threshold, and set the second threshold to a value greater than the first threshold. In other words, if the value that increases the connection attempt time upon reconnection reaches the first threshold first, the reconnection is repeated while maintaining the reconnection attempt time at the first threshold, and then, when the second threshold is reached, the user's intention is confirmed. You can continue trying to reconnect or switch the connection to a base station that supports a different type of communication. Of course, it is also possible to set the first threshold to a value greater than the second threshold. That is, if the value that increases the connection attempt time upon reconnection reaches the second threshold first, the reconnection attempt can be stopped or retried after confirming the user's intention. If, as the reconnection attempt is attempted again, the value by which the connection attempt time is increased reaches the first threshold, the connection attempt time may not be increased and the reconnection attempt may be made at a time corresponding to the first threshold.

Meanwhile, the process of optimizing the connection attempt at the user terminal 110 is ultimately to prevent excessive battery consumption of the user terminal 110, so the user terminal 110 sets a reference value for the remaining battery amount and reconnects. It is also possible to optimize attempts. For example, you can set a standard value for the remaining battery capacity and prevent the connection attempt time from increasing if the remaining battery capacity falls below the standard value when attempting a reconnection. According to this process, the user terminal 110 can prevent excessive increase in battery consumption by optimizing access attempts to the base station when stationary in the shaded area.

Next, a connection attempt optimization process for a state in which the user terminal 110 is moving in a shaded area will be described. While the location of the user terminal 110 is moving, it may attempt to connect to the first base station 120a among the plurality of base stations 120a to 120e. As described above, the first base station may be the base station closest to the location of the user terminal, or may be a base station with a previous connection history. The user terminal may attempt to connect to the first base station 120a during the first connection attempt time. Since the user terminal is in a moving state, it can be connected to the second base station 120b rather than the first base station 120a. For example, as the user terminal moves, the distance from the first base station increases and the distance from the second base station becomes closer, so the user terminal may be connected to the second base station instead of the first base station. Alternatively, it may be in a shaded area when attempting to connect to the first base station, but may be out of the shaded area when connecting to the second base station after a connection failure. According to this process, when the access target base station changes from the first base station to the second base station, the user terminal can reduce the set access attempt time by a certain ratio. For example, the connection attempt time can be reduced by a factor between 0.3 and 0.7 times.

As described above, before the connection attempt time is reduced by a certain factor, reconnection attempts to the first base station may be performed a certain number of times or more. For example, as previously described with reference to FIG. 1, if a connection attempt is made to the first base station during the first connection attempt time and the connection fails, reconnection may be attempted by increasing the first connection attempt time by a certain factor. After repeating this process a certain number of times, the user terminal finally determines that the connection to the first base station has failed, connects to the second base station, which is a nearby base station that can be accessed, and multiplies the time of the last connection attempt to the first base station by a certain ratio. can be reduced. Here, the multiplier for increasing or decreasing the connection attempt time may be the same value or different values. For example, the multiplier for increasing the connection attempt time can be set to 2 times, and the multiplier for decreasing the connection attempt time can be set to 2.3 times. In addition, it is possible to further increase the magnification within the range of 1.5 to 2.5 times or further decrease it to within the range of 0.3 to 0.7 times for each round.

If the connection attempt time is reduced by connecting to the second base station, the user terminal can determine whether the result of reducing the connection attempt time is reduced to less than the third threshold. Here, the third threshold may be set as a standard for the lower limit for reducing the connection attempt time, similar to setting the first and second thresholds previously. If the result of reducing the connection attempt time is less than the third threshold, the user terminal may repeatedly attempt reconnection by maintaining the connection attempt time at the third threshold upon subsequent reconnection.

Meanwhile, the user terminal may be continuously moving. That is, as the location changes and the distance from the second base station increases, the connection may be released. In this case, the user terminal may attempt to connect to a third accessible base station among the plurality of base stations. Also, when attempting to connect to a third base station, the connection can be attempted by increasing the time taken to connect to the second base station by a certain factor. The magnification here may also be determined to be between 0.5 and 2.5 times. According to this process, the user terminal can prevent excessive battery consumption by performing different connection optimization processes when in a stationary or moving state.

Figure 2 is a flowchart of a connection attempt optimization method according to an embodiment of the present invention. Referring to Figure 2, the connection attempt optimization method can be performed sequentially through the user terminal. The user terminal may perform steps S210 to S260 in a stopped state.

In step S210, the user terminal attempts to connect to a first base station among a plurality of base stations at a fixed location during the first connection attempt time. The user terminal may store information about the first connection attempt time. If the user terminal has connected to the first base station in the past or has a history of connecting to any one of a plurality of base stations, the user terminal can set the first connection attempt time based on the history.

If connection to the first base station fails in step S220, the first connection attempt time is increased by a certain factor and reconnection to the first base station is attempted. The user terminal may store information about the multiplier for increasing the first connection attempt time. In step S220, if the user terminal fails to connect to the first base station until the first connection attempt time elapses, it may be determined that the connection has failed. Additionally, reconnection can be attempted by increasing the first connection attempt time by a certain factor.

In step S230, the user terminal determines whether the result of increasing the connection attempt time for a reconnection attempt exceeds the second threshold. If the result of increasing the connection attempt time does not exceed the second threshold, reconnection may be attempted while increasing the connection attempt time each time by a certain factor. Conversely, if the result of increasing the connection attempt time exceeds the second threshold, it can be confirmed whether the reconnection attempt will continue in step S240. The user terminal may output a notification through the display or speaker to confirm the user's intention to attempt reconnection in step S240.

If the user confirms the intention to continue attempting reconnection in step S240, the user terminal may continue attempting reconnection. As in step S220, reconnection can be attempted while increasing the connection attempt time by a certain factor.

In step S250, the user terminal determines whether the result of increasing the connection attempt time for a reconnection attempt exceeds the first threshold. If the first threshold is not exceeded, reconnection may be attempted continuously while increasing the connection attempt time each time. Conversely, if the first threshold is exceeded, the connection attempt time can be maintained at the first threshold during subsequent reconnection attempts in step S260.

Figure 3 is a flowchart of a connection attempt optimization method according to another embodiment of the present invention. Referring to FIG. 3, the connection attempt optimization method can be performed sequentially through the user terminal. The user terminal may perform steps S310 to S340 while moving.

In step S310, the user terminal, while moving, attempts to connect to a first base station among a plurality of base stations during the first connection attempt time. The user terminal may store a history of having connected to the first base station in the past or to any one of a plurality of base stations, and may then set the first connection attempt time based on the saved history when attempting to connect to the first base station.

In step S320, if the user terminal fails to connect to the first base station and connects to the second base station, the first connection attempt time may be reduced by a certain factor. If the user terminal attempts to connect to the first base station until the first connection attempt time elapses and is connected to the second base station instead of the first base station, the user terminal may reduce the first connection attempt time by a certain factor. Of course, it is also possible to attempt reconnection by setting the connection attempt to the first base station to a longer time rather than the first connection attempt time. In this case, a threshold for reconnection attempts may be set, and connection to the first base station may be attempted while increasing the connection attempt time until the threshold is exceeded. And, if the connection to the first base station finally fails and the second base station is connected, the last connection attempt time can be reduced by a certain factor.

In step S330, the user terminal determines whether the result of reducing the connection attempt time exceeds the third threshold. If it is determined that the third threshold is not exceeded, the previous connection attempt time can be reduced by a certain factor every time the base station is connected. On the other hand, if the third threshold is exceeded, the connection attempt time can be maintained at the third threshold upon subsequent reconnection in step S340.

Figure 4 is a block diagram of a connection attempt optimization device according to an embodiment of the present invention. Referring to FIG. 4, the connection attempt optimization device 400 may be implemented as a user terminal. The access attempt optimization device 400 includes a communication module 410 and a processor 420.

The communication module 410 attempts to connect to the first base station among the plurality of base stations. The communication module 410 may be implemented as a communication module or modem that can use various types of mobile communication services such as LTE and 5G supported by a base station.

The processor 420 controls the connection of the communication module 410 to the base station. The processor 420 sets the connection attempt time during which the communication module 410 attempts to connect to the first base station. The processor 420 may set the connection attempt time based on previous access history to the base station. If the communication module 410 fails to connect to the first base station for a set time, the processor 420 may set the reconnection attempt time of the communication module by increasing the connection attempt time by a certain factor. Additionally, if the reconnection attempt time exceeds the first threshold, the connection attempt time may be maintained at the first threshold during subsequent reconnection attempts. The processor 420 can set a second threshold that is different from the first threshold, and when the connection attempt time exceeds the second threshold, a notification to confirm the intention to attempt a reconnection is output through the display of the device 400. You can. Additionally, a third threshold may be set to set a standard for reducing the connection attempt time when the device 400 is in a moving state. In addition, a reference value for the remaining battery capacity of the device 400 can be set, and when the remaining battery capacity falls below the reference value, the reconnection attempt time can be controlled not to increase. The processor 420 may be implemented as a CPU or AP of the access attempt optimization device 400.

Meanwhile, the above-described access attempt optimization device 400 may be implemented as a program (or application) including an executable algorithm that can be executed on a computer. The program may be stored and provided in a temporary or non-transitory computer readable medium.

A non-transitory readable medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as registers, caches, and memories. Specifically, the various applications or programs described above include CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM (read-only memory), PROM (programmable read only memory), and EPROM (Erasable PROM, EPROM). Alternatively, it may be stored and provided in a non-transitory readable medium such as EEPROM (Electrically EPROM) or flash memory.

Temporarily readable media include Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), and Enhanced SDRAM (Enhanced RAM). It refers to various types of RAM, such as SDRAM (ESDRAM), Synchronous DRAM (Synclink DRAM, SLDRAM), and Direct Rambus RAM (DRRAM).

Figure 5 is a diagram showing the process of attempting a connection while increasing the connection attempt time. Referring to FIG. 5, the user terminal may attempt to connect to the base station a certain number of times during a set connection attempt time. As previously explained with reference to FIG. 1, the connection attempt time may increase at a certain rate each time. In one example, the number of connection attempts may be preset within the connection attempt time. For example, it may be set to perform one connection attempt within one (re)connection attempt time. In some cases, you may set values such as 2 times, 3 times, 4 times, 5 times, or 10 times. In the embodiment of Figure 5, a situation in which the number of connection attempts each time is set to 4 will be described as an example.

During the first connection attempt, the user terminal can make a total of 4 connection attempts. The first connection attempt time may be the same as the time taken when the user terminal previously successfully connected to one base station. When the user terminal transmits a signal requesting connection to the base station, the base station can respond and allow the user terminal to connect. However, since the location where the user terminal attempts to connect is in the shaded area, it may not receive a response authorizing the connection from the base station. If a connection grant response is not received from the base station even though the specified number of connection attempts are made during the first connection attempt time, the user terminal can double the connection attempt time and reconnect during the second connection attempt time. During the second connection attempt time, you can attempt to connect as many as 4 times, which is the set number of connection attempts. If you do not receive a response allowing the connection this time, you can double the connection attempt time again and perform 4 connection attempts during the third connection attempt time.

Meanwhile, as shown in FIG. 5, each connection attempt time can be divided into connection attempt time and waiting time. 501, 502, and 503 in FIG. 5 respectively correspond to waiting times. As shown in FIG. 5, the number of connection attempts is the same each time, but as the connection attempt time increases, the waiting time may gradually increase. In Figure 5, an example is given of a method of performing a connection attempt by fixing the number of connection attempts at equal intervals, but a method of setting the interval between each number of connection attempts to gradually increase as the connection attempt time increases can also be applied. For example, if the interval between each connection attempt in the first connection attempt time is 1 second, the interval between each connection attempt in the second connection attempt time is increased to 2 seconds, and the interval between each connection attempt number in the third connection attempt time is 1 second. You can increase the time to 3 seconds to attempt a connection.

Regardless of which of the two methods described above is applied, it is possible to reduce battery consumption compared to before. In the conventional case, there was a problem of excessive battery consumption because there was no waiting time or continuous attempts were made to connect after a short waiting time. However, in one embodiment of the present invention, excessive connection attempts occurred due to the increasingly longer waiting time. As a result, the battery consumption of the user terminal is reduced. Here, a threshold value is set for the connection attempt time to prevent excessive waiting time, and when the increased value of the connection attempt time exceeds the threshold, it is not increased any further and is maintained at the threshold value, providing a more efficient connection optimization method. It is possible to perform.

The method and device for optimizing the connection attempt of a user terminal according to an embodiment of the present invention have been described with reference to the embodiment shown in the drawings to aid understanding, but this is merely illustrative and will be used by those skilled in the art. It will be understood that various modifications and other equivalent embodiments are possible from this. Therefore, the true technical protection scope of the present invention should be determined by the attached patent claims.

Claims (14)

In a method of optimizing the connection attempt of a user terminal in a shadow area within mobile communication coverage formed by a plurality of base stations,
Attempting to connect to a first base station among the plurality of base stations; and
Including; attempting to reconnect during the reconnection attempt time in response to a connection failure to the first base station,
The reconnection attempt time is calculated as a value obtained by increasing the previous connection attempt time by a certain ratio starting from the first connection attempt time. According to claim 1,
A connection attempt optimization method of a user terminal controlling a preset number of connection attempts to be made during at least one of the initial connection attempt time and the reconnection attempt time. According to claim 1,
A method for optimizing a connection attempt of a user terminal, wherein the reconnection attempt time corresponding to a connection failure is increased by a factor of between 0.5 and 2.5 times the previous connection attempt time. The method of claim 1, wherein the step of attempting reconnection includes:
In response to the reconnection attempt time increasing and reaching a first threshold, attempting reconnection by maintaining the reconnection attempt time at the first threshold. The method of claim 4, wherein the step of attempting reconnection includes:
A method for optimizing a connection attempt of a user terminal, further comprising determining whether to continue attempting to reconnect to the first base station in response to the reconnection attempt time increasing and reaching a second threshold. According to claim 1,
The plurality of base stations include base stations associated with at least one of 3G communication, LTE communication, and 5G communication,
Basically, the user terminal's connection attempt is performed for 5G communication,
The step of checking whether to continue the reconnection attempt includes checking whether the 5G communication is used. According to claim 6,
A connection attempt optimization method of a user terminal comprising switching to a reconnection attempt for at least one of the 3G communication and the LTE communication in response to a user input indicating not to use the 5G communication. According to claim 5,
A method for optimizing a connection attempt of a user terminal, wherein the second threshold is a value greater than the first threshold. According to claim 1,
In response to the connection target base station changing from the first base station to the second base station during the reconnection attempt, the step of attempting reconnection while reducing the reconnection attempt time by a certain factor from the reconnection attempt time for the first base station. A method for optimizing connection attempts of a user terminal, including: According to clause 9,
The reconnection attempt time reduced by changing to the second base station is a time reduced by a factor of between 0.3 and 0.7 times the previous connection attempt time. The method of claim 9, wherein the step of attempting reconnection while decreasing the magnification by a certain amount includes:
Optimizing connection attempts of a user terminal, including the step of attempting reconnection by maintaining the reconnection attempt time at the third threshold in response to the reconnection attempt time being reduced by changing to the second base station reaching a third threshold. method. According to claim 1,
Set a reference value for the remaining battery capacity of the user terminal,
A connection attempt optimization method for a user terminal that does not increase the connection attempt time when reconnecting when the remaining battery capacity is less than the reference value. According to claim 1,
The first connection attempt time is the time taken when the first connection is successfully made to any one of the plurality of base stations. In the user terminal device that optimizes the connection attempt of the user terminal in a shadow area within the mobile communication coverage formed by a plurality of base stations,
a communication module that attempts to connect to a first base station among the plurality of base stations; and
Includes a processor that controls access to the communication module,
The processor controls the communication module to attempt reconnection during the reconnection attempt time in response to a connection failure to the first base station,
The reconnection attempt time is calculated by increasing the previous connection attempt time by a certain ratio starting from the first connection attempt time. A user terminal device for optimizing a connection attempt.